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Добірка наукової літератури з теми "Detention ponds"

Автор: Grafiati
Опубліковано: 10 січня 2023
Оновлено: 28 січня 2023

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Статті в журналах з теми "Detention ponds"

1

Macdonald, R. J., and A. Ernst. "Disinfection Efficiency and Problems Associated with Maturation Ponds." Water Science and Technology 18, no. 10 (October 1, 1986): 19–29. http://dx.doi.org/10.2166/wst.1986.0107.

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Анотація:
Reductions in densities of indicator organisms and pathogens were measured in maturation ponds receiving secondary effluents from trickling filter and activated sludge treatment works. Effluent detention times in the ponds were determined using dye tracing techniques and compared with nominal detention times calculated from pond volumes and effluent flow rates. Median detention times were substantially less than nominal times because of short circuiting due to pond design aspects and thermal stratification. Maturation ponds of 10 days median detention time were found to successfully disinfect a poor quality trickling filter effluent and were effective at removing parasite ova and reducing virus densities. Continued use of maturation ponds should be encouraged in developed and developing countries as they have low cost, operational, maintenance and skilled operator requirements and are an effective disinfection process. Pond designs should minimize short circuiting and thus the areal requirements of the ponds.
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2

Macdonald, R. J., and A. Ernst. "Disinfection Efficiency and Problems Associated with Maturation Ponds." Water Science and Technology 19, no. 3-4 (March 1, 1987): 557–67. http://dx.doi.org/10.2166/wst.1987.0235.

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Анотація:
Reductions in densities of indicator organisms and pathogens were measured in maturation ponds receiving secondary effluents from trickling filter and activated sludge treatment works. Effluent detention times in the ponds were determined using dye tracing techniques and compared with nominal detention times calculated from pond volumes and effluent flow rates. Median detention times were substantially less than nominal times because of short circuiting due to pond design aspects and thermal stratification. Maturation ponds of 10 days median detention time were found to successfully disinfect a poor quality trickling filter effluent and were effective at removing parasite ova and reducing virus densities. Continued use of maturation ponds should be encouraged in developed and developing countries as they have low cost, operational, maintenance and skilled operator requirements and are an effective disinfection process. Pond designs should minimize short circuiting and thus the areal requirements of the ponds.
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3

Shammaa, Y., D. Z. Zhu, L. L. Gyürék, and C. W. Labatiuk. "Effectiveness of dry ponds for stormwater total suspended solids removal." Canadian Journal of Civil Engineering 29, no. 2 (April 1, 2002): 316–24. http://dx.doi.org/10.1139/l02-008.

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This paper reviews the factors and criteria for the design of new and the retrofitting of existing dry detention ponds to enhance removal of total suspended solids (TSS) from stormwater. Detention time is discussed as the most important factor affecting TSS removal. Two-stage facilities and multi-level outlet design are important means of enhancing TSS removal in dry ponds. Two dry ponds within the city of Edmonton were selected to evaluate their TSS removal. The level of expected TSS removal is low owing to the relatively short detention times for both ponds. Methods for retrofitting the dry ponds to enhance TSS removal are discussed.Key words: dry pond, stormwater, TSS removal, detention time, retrofitting.
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4

Papa, Fabian, Barry J. Adams, and Yiping Guo. "Detention time selection for stormwater quality control ponds." Canadian Journal of Civil Engineering 26, no. 1 (February 1, 1999): 72–82. http://dx.doi.org/10.1139/l98-046.

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Current stormwater quality control pond design in Ontario typically includes the specification of a uniform detention time for extended detention ponds to ensure water quality control. In reality, the pollution-control performance of such facilities is governed by two opposing forces: improved pollutant removal efficiency over longer detention times and the decreased volume of runoff captured and treated by the facility for longer detention times. The combination of these effects produces a maximum attainable level of long-term pollution-control performance at an optimal detention time. Derived probability distribution models for runoff control are used to investigate the quality-control behaviour of extended detention dry ponds for the case where a design storm is specified to establish pond storage requirements and for the more general case where storage requirements may be selected on the basis of the level of control desired. Graphical relationships are developed to facilitate the planning and design process. The methodology presented encourages efficient engineering design while promoting environmental protection by ensuring a maximum level of long-term pollution control.Key words: stormwater management, water quality, probabilistic models, optimization, stormwater ponds, detention time, pond design.
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5

von Sperling, M., and L. C. A. M. Mascarenhas. "Performance of very shallow ponds treating effluents from UASB reactors." Water Science and Technology 51, no. 12 (June 1, 2005): 83–90. http://dx.doi.org/10.2166/wst.2005.0432.

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Polishing ponds are units conceived for the post-treatment of the effluents from anaerobic reactors, are designed as maturation ponds, and aim at a further removal of organic matter and a high removal of pathogenic organisms. The paper investigates the performance of four very shallow (H = 0.40 m) polishing ponds in series, with very low detention times (1.4–2.5 days in each pond), treating anaerobic effluent from the city of Belo Horizonte, Brazil. The system was able to achieve excellent results in terms of BOD and E. coli removal, and good results in terms of ammonia removal, allowing compliance with European standards for urban wastewater and WHO guidelines for unrestricted irrigation. The paper presents the values of BOD and E. coli removal coefficients, which were much higher than those found in conventional pond systems. No statistically significant difference was found in the effluent E. coli concentrations from a pond with low depth and low detention time, and another pond in parallel, with double the depth and approximately double the detention time. The results endorse the applicability of the system composed by UASB reactors followed by very shallow ponds in series, with low detention times.
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6

Pettersson, Thomas J. R. "FEM-Modelling of Open Stormwater Detention Ponds." Hydrology Research 28, no. 4-5 (August 1, 1997): 339–50. http://dx.doi.org/10.2166/nh.1998.29.

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Stormwater in urban areas is polluted with suspended materials which transport heavy metals and degrade the quality of the receiving waters. Since open detention ponds improve water quality, an investigation of a constructed pilot-scale detention pond was carried out. Measurements of inflow and outflow were performed and two flow-weighted samplers were used to collect representative samples of suspended solids and heavy metals. The particle size distribution was analysed to allow an estimation of the settling of suspended solids. Particle removal from a rain event was defined as two different phases where the first phase occurs during the rain event and the second phase after the event. In this paper only the first phase is considered. A FEM-software package (FIDAP) was used to calculate the three dimensional velocity flow field for one rain event. A sedimentation approach was applied to the flow field where paths were calculated through the detention pond for different particle sizes. The results from four different particle sizes show satisfactory agreement between FEM-calculated and observed particle removal. The results show that FIDAP is a useful tool to predict pollutant removal for open detention ponds with arbitrary geometry.
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7

Li, Houng. "Investigation of Highway Stormwater Management Pond Capacity for Flood Detention and Water Quality Treatment Retention via Remote Sensing Data and Conventional Topographic Survey." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 7 (June 18, 2020): 514–27. http://dx.doi.org/10.1177/0361198120923658.

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Stormwater management ponds are common best management practice (BMP) and green infrastructure (GI) for flood attenuation and water quality treatment in highway projects. Originally designed to provide storage volume for flood detention, stormwater ponds today often employ additional retention volume at pond bottom in a hope to improve water quality via sedimentation and other pollutant-removal mechanisms. It is commonly assumed that sediment accumulation and topographic variations (such as erosion, channelization, and in-pond plant growth and decay) over time often decrease the capacity of stormwater ponds. However, differences between design capacities and field capacities over time have never been verified and quantitatively analyzed before. This study presents such analysis using conventional topographic survey techniques and remote sensing data (topographic light detection and ranging digital elevation model [LIDAR DEM]) for 10 highway stormwater ponds along Interstate Highway-95 (I-95) systems in Baltimore City, Cecil County, and Harford County, Maryland, United States, with facility service life ranging from 14 to 26 years (1990–2015). Data derived from LIDAR DEM were compared with those from topographic survey; the LIDAR DEM data appear to be effective in measuring flood detention capacities and identifying silted ponds, but not in estimating the remaining retention volume for water quality treatment. Data from topographic survey indicate that the total volume in the ponds was relatively unchanged compared with the design, with increases in some instances. The increase typically occurred at the pond’s upper stages. Nonetheless, the water quality treatment capacity at pond bottom (wet pool volume) was drastically less (up to 100% of the design). As current maintenance practice of stormwater ponds relies heavily on visual inspection, the storage volume variations are often overlooked. As such, the findings prompt uncertainty on the long-term effectiveness of watershed implementation plan and models in the Chesapeake Bay watersheds, as many of them depend on wet pool volume design in BMP and GI.
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8

Darnell, Charles M., Hussain Lootah, Essa Alhaj Al Maidoor, and Sami A. H. Ghonim. "STORMWATER MANAGEMENT USING DETENTION PONDS." Proceedings of the Water Environment Federation 2001, no. 13 (January 1, 2001): 582–97. http://dx.doi.org/10.2175/193864701790864494.

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9

Krajewski, Adam, Kazimierz Banasik, and Anna E. Sikorska. "Stormflow and suspended sediment routing through a small detention pond with uncertain discharge rating curves." Hydrology Research 50, no. 4 (April 23, 2018): 1177–88. http://dx.doi.org/10.2166/nh.2018.131.

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Abstract Ratings curves are commonly used for computing discharge time series from recorded water stages or for hydrograph and sediment graph routing through detention ponds. Numerous studies have demonstrated that these rating curves are often linked with significant uncertainty. Nevertheless, the uncertainty related to the use of these rating curves in sediment estimates has not been investigated so far. Hence, in this work, we assess the impact of using such uncertain discharge rating curves on the estimation of the pond outflow (discharge, sediment concentration and load) from a small detention pond located in a small urban catchment in Poland. Our results indicate that the uncertainty in rating curves has a huge impact on estimates of discharge and sediment fluxes in the outlet from the reservoir, wherein the uncertainty in the inlet rating curve plays a more important role than the uncertainty in the outlet rating curve. Poorly estimated rating curve(s) may thus lead to serious errors and biased conclusions in the estimates and designs of detention ponds. To reduce this uncertainty, more efforts should be made to construct the rating curves at the pond inlet and to gather more data in extreme conditions.
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10

Istenič, Darja, Carlos A. Arias, Víctor Matamoros, Jess Vollertsen, and Hans Brix. "Elimination and accumulation of polycyclic aromatic hydrocarbons in urban stormwater wet detention ponds." Water Science and Technology 64, no. 4 (August 1, 2011): 818–25. http://dx.doi.org/10.2166/wst.2011.525.

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The concentrations of polycyclic aromatic hydrocarbons (PAHs) in water and sediments of seven wet detention ponds receiving urban stormwater were investigated. The ponds comprised traditional wet detention ponds with a permanent wet volume and a storage volume as well as ponds that were expanded with sand filters and other means to improve the removal of micropollutants. The concentrations of ∑PAH in the sediments varied between 6 ± 5 and 2,222 ± 603 ng g−1 dry weight (mean ± standard deviation), and were highest in the ponds with lower pond volume per catchment area and did not clearly reflect different activities in the catchments. In general, the concentrations of PAHs in the sediments decreased from inlet to outlet, especially in the systems with good conditions for sedimentation such as systems with flow perpendicular sand dikes and extensive submerged vegetation. High molecular weight PAHs were predominant in the sediments indicating the pyrogenic origin of the PAHs. There was no correlation between PAH species concentrations in water or sediments and their hydrophobicity (log Kow). PAH concentrations in water fluctuated in response to intensity and frequency of rain events, whereas concentrations in the sediments integrated the pollutant load over time. Pond systems expanded with sand filters and other technologies to enhance removal of micropollutants consistently had concentrations of PAHs in the effluents below the detection level.
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Більше джерел

Дисертації з теми "Detention ponds"

1

Bauer, Richard D. "Optimization of detention ponds for urbanizing watersheds /." Available to subscribers only, 2008. http://proquest.umi.com/pqdweb?did=1559856651&sid=14&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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2

Kaye, Kriss Young. "Phosphorus accumulation in bottom sediments of retention/detention ponds." Master's thesis, University of Central Florida, 1993. http://digital.library.ucf.edu/cdm/ref/collection/RTD/id/71670.

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University of Central Florida College of Engineering Thesis
Laboratory and field studies were conducted to characterize phosphorus in bottom sediments for retention/detention ponds. The laboratory studies, including batch and column experiments, were conducted to assess possible removal processes. Sediment core samples were collected from detention ponds receiving urban runoff. These cores were analyzed for phosphorus at different layers including accumulated top sediments and the lower parent soil beneath it at a depth of 1, 3, 5, 10 and greater than 10 cm. The phosphorus accumulation rate was found to decline with calculated overflow rates from an average storm. Also attenuation of phosphorus with sediment depth followed an exponential decline. Batch experiments showed a higher adsorption capacity to remove phosphorus for top accumulated sediments than the lower parent soil, which is consistent with data from field studies showing greater phosphorus in the sediments. Phosphorus adsorptioncan be described by the Freundlich and Linear isotherms. Mass transfer rates varied with phosphorus concentration and contact time. A generalized model was developed to predict phosphorus removal in column studies.
M.S.
Masters
Civil and Environmental Engineering
Engineering
Environmental Engineering
136 p.
x, 136 leaves, bound : ill. ; 28 cm.
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3

Färm, Carina. "Constructed Filters and Detention Ponds for Metal Reduction in Storm Water." Doctoral thesis, Mälardalens högskola, Institutionen för samhällsteknik, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-55.

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4

Scott, Kenneth A. "Nutrient characteristics of urban stormwater detention ponds on the Canadian Prairies." Thesis, Edinburgh Napier University, 1997. http://researchrepository.napier.ac.uk/Output/4268.

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Анотація:
The use of artificial ponds for the temporary storage of urban stormwater runoff is a commonly used environmental engineering practice in North America. By releasing runoff at a rate slower than the initial generation rate, on-line flood control is achieved. Urban runoff typically has a high eutrophication potential, so that single unit detention ponds may sustain excess algal/macrophyte growth within only a few years of construction. A research project was undertaken between 1992 and 1995 on stormwater detention ponds in the Province of Saskatchewan, Canada. Three ponds aged 15 to 17 years old are described in this thesis. The focus of the study was to describe the nutrient characteristics and associated phytoplankton cycles within these systems, and to further identify potential management options for water quality improvement. Four to five months of permanent winter ice cover occurs in the central zone of the Province. Of the three systems reported here, complete winter anoxia is typical in two (1.7 to 1.8 m deep - mixed), while partial or complete anoxia occurs in the third pond according to the timing of snowmelt (2.7 m deepthermally stratified in summer). Therefore, biological community structure is limited by the overwintering potential. Accumulated nitrogen, phosphorus, and silica sustained green algae and diatom blooms following ice-melt, and pH values of >9.5 often occurred by late April. During the open water season, hypereutrophic conditions were sustained and the systems typically oscillated between blue-green and green algal dominance according to flushing, external N- loading and mixing. Dissolved inorganic nitrogen:phosphorus (DIN:DIP) ratios of stormwater were typically below Redfield stoichiometry. Therefore, inpond DIN:DIP ratios of <3 were typical, with one system frequently <1. These low ratios were the result of both internal P-Ioading and N loss mechanisms during dry weather storage periods, and DIP >0.25 mg/L sometimes occurred within the euphotic zone. Dense N-fixing Anabaena sp. blooms periodically developed under suitable climatic conditions. Nitrogen fixed into the system in turn supported non-fixing species as a subsiding bloom was mineralized. Nutrient and phytoplankton cycles fluctuated within short time scales, according to physical disturbances and algal self-shading at peak biomass (sometimes > 100 mm3/L). Average algal biomass levels in the stratifying pond were lower than the other ponds on account of sedimentary losses to an anaerobic bottom zone. xv Grazing by herbivorous zooplankton was generally not significant in promoting phytoplankton species successions. The zooplankton of all three systems were dominated by cyclopoid copepods and rotifers. Predation by fish (minnows), food quality (blue-green algae dominance), and losses during large flushing events are among factors which may suppress desirable large-bodied cladoceran zooplankton in these systems. The mean surficial (1 cm) sediment iron content was lowest (",,27 mg Fe/g dry wt VS. 38 mg Fe/g dry wt) and the organic content was highest ("" 18% LOI VS. 11 % LOI) in the stratifying pond compared to the two non-stratifying ponds. Also, the mean sediment depth in the stratifying pond (not including the littoral slope sediments) was highest (",,21 cm VS. 9 to 13 cm), when compared to the two non-stratifying ponds. Iron may be lost from the stratifying pond by flushing of anaerobic hypolimnetic waters during stormflows. Groundwater inflows to the stratified pond resulted in a higher alkalinity system and consequently the highest mean sediment calcium content of the three ponds (",,82 mg Calg dry wt, VS. 31 to 34 mg Calg dry wt). The surficial sediment total-P [TP] of the three ponds ranged from 0.97 to 1.26 mg/g dry wt, and in all cases 11 to 15% of this was associated with inorganic extractable P, with more in the calcium than the iron/aluminium bound fraction. At peak water temperatures (s:26°C) internal P loading rates >30 mg/m2/day were calculated from field data in the non-stratifying ponds. An average P release rate of 15 mg/m2/day was measured during anaerobic incubation of sediment cores from one of these ponds at 20°C. However, aerobic incubation of these sediments showed that Fe concentrations were sufficient to provide high P uptake potential when oxidized. Anaerobic incubations of intact cores from the stratifying pond gave average release rates of 5 to 16 mg/m2/day from 5 to 20°C. Field data also showed that net internal P loads were reflected by changes in the surficial sediment P pool. A nutrient input budget for the stratifying pond showed that groundwater baseflow supplied a massive amount of DIN (as N03) relative to stormflows. If the seasonal stormwater DIP load was expressed as an averaged areal mass/day, the average seasonal internal P loading (-8 to 10 mg/m2/day) was four times higher. Theoretical P removal efficiencies of 63 to 80% were calculated for the ponds, but resuspension and flushing of internally loaded P accumulated during dry weather may reduce these values. A TP mass export of 0.25 to 0.3 kg/ha impervious/0.58 year from 250 mm precipitation was calculated from runoff studies in Saskatoon. In experimental work, inorganic nitrogen additions to the most N-limited pond were carried out from May to July 1994. Complete dominance of the spring to mid-summer phytoplankton by green algae and diatoms was maintained. However, warming water increased P recycling, and during a period of lower than average wind speeds a non-fixing blue-green algae bloom developed in place of the usual N-fixing algae bloom. No significant alteration to the zooplankton species composition was evident despite structural changes to the vernal phytoplankton composition. Phosphorus inactivation with aluminium sulphate was successful in improving water quality for a six week period during which the control pond developed a dense N-fixing algae bloom. Sediment surface oxidation was promoted by the reduction of productivity, and P adsorption to sediment iron complexes was an important secondary benefit. Several very large storms were ultimately responsible for exchanging approximately 100% of the storage volume, after which bloom conditions were restored. The procedure may be an effective short-term measure, but benefits will not extend beyond major exchange events. Management options for aesthetic improvement are very limited in these hypereutrophic ponds. External DIP loads will continue to be at least 5 to 10 times greater than threshold values for nuisance algal growth, and seasonal internal loading of P is high. The inability of increased N availability to prevent blue-green algae bloom formation, together with high exchange volumes and a general lack of herbivorous zooplankton, suggest that top-down management interventions (limited by overwintering) to control zooplanktivores are unlikely to prevent algae bloom formation in ponds with lower volume:catchment area ratios. More work is required with regard to nutrient budgets if pond operational efficiencies are to be accurately assessed. In addition, measurement of primary productivity would provide invaluable information for any attempt to model algal growth in these ponds. Sediment removal is ultimately required as a long-term maintenance measure, but more information on the incorporation of P inactivation agents directly into the sediment structure is needed as a means to retard internal P loading.
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5

Omar, Mohie Eldeen Mohamed Ahmed [Verfasser]. "Improvement of Detention Ponds with Respect to Salinity / Mohie Eldeen Mohamed Ahmed Omar." Aachen : Shaker, 2011. http://d-nb.info/108076495X/34.

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6

Sanousi, Sanousi Salem. "A method for assessing the use of small water impoundments for sediment detention and local water supplies on the Wadi Zarat watershed, northwestern Libya." Diss., The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_240_sip1_w.pdf&type=application/pdf.

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7

Kabbani, Muhieddine Saadeddine. "Using PCSWMM to simulate first flush and assess performance of extended dry detention ponds as structural stormwater BMPs in a large polluted urban watershed." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1653.

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Анотація:
Urbanization and increase of impervious areas impact stormwater runoff and can pollute receiving waters. Total suspended solids (TSS) are of particular concern as they can act as a transport agent for other pollutants. Moreover, the existence of the first flush phenomenon (FF), whereby the first stage of storm runoff is the most concentrated, can also have profound ecological effects on receiving waters. Understanding the various types of pollutants in watershed stormwater, their correlation with rainfall parameters (precipitation depth and previous dry days) and with TSS, and the existence of FF is crucial to the design of the most suitable structural best management practice (BMP) that can mitigate their harm. Personal Computer Storm Water Management Model (PCSWMM) is a well-known computer model that can simulate urban runoff quantity and quality and model BMPs. The use of PCSWMM to simulate the first flush phenomenon and to evaluate the effectiveness of structural BMPs has not been previously investigated for a large urban watershed with seriously polluted stormwater runoff. This research is concerned with the study of a framework for designing structural best management practices (BMPs) for stormwater management in a large watershed that is based on comprehensive analysis of pollutants of concern, rainfall parameters of influence, and the existence of FF. The framework was examined using the PCSWMM computer model in the St Anthony Park watershed, an urban watershed in St Paul, Minnesota with a large drainage area of 3,418 acres that discharges directly into the Mississippi River via a storm tunnel. A comprehensive study was undertaken to characterize the overall St. Anthony Park watershed stormwater quality trends for the period of record 2005-2013 for heavy metals, nutrients (ammonia and total phosphorus), sediment (TSS), and bacteria (E. coli). Stormwater was found to be highly contaminated as measured by exceedance of the Minnesota Pollution Control Agency (MPCA) water quality standards and as compared to data obtained from the National Stormwater Quality Database (NSQD). None of the examined parameters significantly correlated with precipitation depth. Concentrations of most heavy metals, total phosphorus and TSS positively correlated with previous dry days, and most pollutants correlated positively with TSS, which provided a strong rationale for using TSS as a representative pollutant in PCSWMM and in examining BMP efficiency. Moreover, BMPs that targeted the particulate fraction in stormwater would be the most efficient in reducing stormwater pollution. A PCSWMM model was built based on the existing drainage system of the watershed, which consisted of inlet structures, manholes, pipes and deep manholes that connect the network pipes to a deep drainage tunnel discharging directly into Mississippi River. The model was calibrated and validated using recorded storm and runoff data. FF was numerically investigated by simulating pollutant generation and washoff. Using three different numerical definitions of FF, the existence of FF could be simulated, and was subsequently reduced by simulating extended dry detention ponds in the watershed. Extended dry detention ponds (EDDPs) are basins whose outlets are designed to detain stormwater runoff for a calculated time that allows particles and associated pollutants to settle. Extended dry detention ponds are a potential BMP option that could efficiently control both water quantity (by diverting initial volumes of stormwater, thus addressing FF) and quality (by reducing suspending pollutants, thus addressing TSS and co-contaminants). Moreover, they are the least-expensive stormwater treatment practice on a cost per treated unit area. Two location-based designs were examined. The first was an EDDP at the main outfall (OFmain), while the second was a set of seven smaller EDDPs within the vicinity of deeper manholes of the deep tunnel (distributed EDDPs). Distributed EDDPs were similar to the OFmain EDDP at reducing peak stormwater flow (52-61%) but superior in reducing TSS loads (20-25% for small particles and 43-45% for larger particles based on the particle sedimentation rate removal constant k) and in reducing peak TSS loads (67-75%). These efficiencies were obtained using the dynamic and kinematic wave routing methods, indicating that they could be used interchangeably for this watershed. The steady state routing method produced unrealistic results and was subsequently excluded from FF analysis. Finally, distributed EDDPs were superior to OFmain EDDP at eliminating FF per the stringent fifth definition (Δ > 0.2). This was true for small values of k. However, larger values of k and other FF tests (above the 45º no-flush line and FF coefficient b < 1) showed that BMP implementation overall failed to completely eliminate FF. This suggested that the extended time required by EDDPs to efficiently remove pollutants from stormwater via settling would compromise their ability to completely eliminate FF. In conclusion, a comprehensive framework was applied so as to better design the most efficient BMPs by characterizing the overall St. Anthony Park watershed stormwater pollutants, their correlation with rainfall parameters and with TSS, and the magnitude of FF. A cost-effective, rapid, and accurate method to simulate FF and study the optimal BMP design was thus implemented for a large urban watershed through the PCSWMM model.
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Hoeppner, Ana Flávia da Silva. "Comportamento de variáveis físicas, químicas e da eficiência de sistemas de lagoas de estabilização em ambiente tropical (Vale do Ribeira de Iguape, SP)." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-31102008-132720/.

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As lagoas de estabilização compõem sistemas de tratamento de águas residuárias sujeitos à variação de eficiência decorrente, dentre outros fatores, das variações climáticas. A variação de eficiência e da estratificação em lagoas de estabilização, localizadas em ambiente subtropical, em diferentes épocas do ano, foi o principal objetivo dessa pesquisa. Para essa finalidade, a eficiência de dois sistemas de lagoas de estabilização localizadas no Vale do Ribeira de Iguape (SP) - nas cidades de Jacupiranga e Pariquera-Açu - foi determinada, em período sazonal (quatro épocas do ano) e semanal (três dias consecutivos), assim como perfis de temperatura, condutividade elétrica, pH e oxigênio dissolvido e aspectos ambientais (temperatura do ar, radiação solar, direção e velocidade do vento e precipitação) foram mensurados. Além disso, aspectos operacionais, tais como, volume de lodo, de água, vazão e tempo de detenção teórico foram mensurados a fim de caracterizar apenas as lagoas facultativas. Alterações no comportamento sazonal destas variáveis e padrões de similaridade entre eficiência de cada lagoa e estratificação térmica foram analisadas através da ferramenta estatística análise do componente principal (PCA). Observou-se, principalmente, que a variação sazonal de eficiência foi relevante, sendo que, em julho/06 a qualidade do afluente e do efluente foi diferente das outras épocas do ano, ou seja, houve variação sazonal de variáveis físicas e químicas. Variação diária foi observada em janeiro/06, época de maiores precipitações e maior homogeneidade térmica. Na PCA, a estratificação térmica foi significativa, ou seja, esteve relacionada com outras variáveis. A vazão e tempo de detenção, nas lagoas facultativas, estiveram dentro de faixas observadas em outras lagoas de estabilização e o volume de lodo não ultrapassou 3% do volume das lagoas.
Stabilization ponds compose systems of wastewater treatment citizens to the variation of efficiency decurrent, amongst other factors, of the climatic variations. The variation of efficiency and stratification in stabilization ponds, located in subtropical environment, at different seasons, was the main objective. For this purpose, the efficiency of two stabilization ponds systems located in the Vale do Ribeira de Iguape (SP) - in cities as Jacupiranga and Pariquera-Açu - was determined, in sazonal period (four seasons) and weekly (three days consecutive), as well as temperature, electric condutivity, pH and dissolved oxygen profiles and environment aspects had been measured (air temperature, solar radiation, direction and speed of the wind and precipitation). Moreover, operational aspects, such as, volume of sludge, volume of water, outflow and theoretical detention times had been measured in order to characterize only the facultative ponds. Alterations in sazonal behavior of these variables and standards of similarity between efficiency and thermal stratification had been analyzed through the tool statistics análise do componente principal (PCA). It was observed, mainly, that the sazonal variation of efficiency was important, so, in July/06 the quality of the affluent and effluent was different to the other seasons, in other words, it was observed sazonal variation of physical and chemical variable. Daily variation happened in January/06, time of more precipitations and thermal homogeneity. In other analysis with PCA, the thermal stratification was significant and it was related with other variable. The outflow and detention times, in the facultative ponds, had been similar others facultatives ponds and the volume of sludge did not exceed 3% of the volume of water in the ponds.
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Brown, Anthony Turner Franklin. "Examination of influential variables biological leaching of trace metals from stormwater detention pond sediments." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20611.pdf.

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10

Vickers, Shannon Lynne. "Metal mobility in a stormwater detention pond, investigating metal mobility and sediment-water exchange." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0002/MQ46012.pdf.

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Книги з теми "Detention ponds"

1

Bahk, Benjamin. A survey of outflow water quality from detention ponds in agriculture. Brooksville, Fla. (2379 Broad St., Brooksville 34609): Environmental Section, Southwest Water Management District, 1996.

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2

Hampson, Paul S. Effects of detention on water quality of two stormwater detention ponds receiving highway surface runoff in Jacksonville, Florida. Tallahassee, Fla: U.S. Dept. of the Interior, Geological Survey, 1986.

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3

Canada, Canada Environment. Stormwater detention ponds of southern Ontario: Are they a risk to wildlife? Ottawa, Ont: Environment Canada, 1999.

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Fernandez, Mario. Hydrogeology and chemical quality of water and bottom sediment at three stormwater detention ponds, Pinellas County, Florida. Tallahassee, Fla: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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Fernandez, Mario. Hydrogeology and chemical quality of water and bottom sediment at three stormwater detention ponds, Pinellas County, Florida. Tallahassee, Fla: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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6

Cummings, Dave. Periodic dam safety inspection report for Reba Lake Stormwater Detention Pond, King County, Washington. [Olympia, Wash.]: Washington State Dept. of Ecology, 2005.

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7

Martin, Edward H. Constituent-load changes in urban stormwater runoff routed through a detention pond-wetlands system in central Florida. Tallahassee, Fla: U.S. Dept. of the Interior, Geological Survey, 1986.

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Martin, Edward H. Constituent-load changes in urban stormwater runoff routed through a detention pond-wetlands system in central Florida. Tallahassee, Fla: U.S. Dept. of the Interior, Geological Survey, 1986.

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9

Martin, Edward H. Constituent-load changes in urban stormwater runoff routed through a detention pond-wetlands system in central Florida. Tallahassee, Fla: U.S. Dept. of the Interior, Geological Survey, 1986.

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10

Martin, Edward H. Constituent-load changes in urban stormwater runoff routed through a detention pond-wetlands system in central Florida. Tallahassee, Fla: U.S. Dept. of the Interior, Geological Survey, 1986.

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Частини книг з теми "Detention ponds"

1

Wium-Andersen, Tove, Asbjørn H. Nielsen, Thorkild Hvitved-Jacobsen, and Jes Vollertsen. "Reduction of Stormwater Runoff Toxicity by Wet Detention Ponds." In Highway and Urban Environment, 169–76. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3043-6_19.

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2

Lam, Alan S., and R. Mark Palmer. "Modeling Retrofitted Extended-Detention Wet Ponds and Wetland Pockets." In Advances in Modeling the Management of Stormwater Impacts, 407–28. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003208945-24.

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3

Wium-Andersen, Tove, Asbjørn Haaning Nielsen, Thorkild Hvitved-Jacobsen, and Jes Vollertsen. "Modeling nutrient and pollutant removal in three wet detention ponds." In Urban Environment, 237–48. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2540-9_22.

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4

de Souza, Fernanda Pereira, Maria Elisa Leite Costa, and Sergio Koide. "Hydrological Modelling and Detention Ponds Evaluation at Paranoa Lake - Brazil." In New Trends in Urban Drainage Modelling, 649–53. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99867-1_112.

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5

Madsen, Heidi Ina, Jes Vollertsen, and Thorkild Hvitved-Jacobsen. "Modelling the oxygen mass balance of wet detention ponds receiving highway runoff." In Alliance For Global Sustainability Bookseries, 487–97. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6010-6_42.

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6

Stephansen, Diana Agnete, Asbjørn Haaning Nielsen, Thorkild Hvitved-Jacobsen, and Jes Vollertsen. "Bioaccumulation of heavy metals in fauna from wet detention ponds for stormwater runoff." In Urban Environment, 329–38. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2540-9_30.

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7

Urbonas, Ben, and William P. Ruzzo. "Standardization of Detention Pond Design for Phosphorus Removal." In Urban Runoff Pollution, 739–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-70889-3_25.

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8

Schifman, Laura A., Varun K. Kasaraneni, and Vinka Oyanedel-Craver. "Contaminant Accumulation in Stormwater Retention and Detention Pond Sediments: Implications for Maintenance and Ecological Health." In ACS Symposium Series, 123–53. Washington, DC: American Chemical Society, 2018. http://dx.doi.org/10.1021/bk-2018-1302.ch007.

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9

Mah, Darrien Yau Seng, Afdal Haziq bin Mohamad Salehe, and Frederik Josep Putuhena. "Water Sensitive Urban Design in Existing Urban Settings: Case Study of Dry Detention Pond in Kuching City." In InCIEC 2013, 315–22. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-4585-02-6_27.

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10

"detention pond." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 365. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_41519.

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Тези доповідей конференцій з теми "Detention ponds"

1

Schroer, William F., Claudia Benitez-Nelson, Erik Smith, and Lori A. Ziolkowski. "SOUTH CAROLINA STORMWATER DETENTION PONDS: SEDIMENT ACCUMULATION AND NUTRIENT SEQUESTRATION." In 65th Annual Southeastern GSA Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016se-273279.

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2

Po-Yuan Hsu and Yi-Lung Yeh. "Study on optimal starting time of detention ponds and water resource reuse." In 2011 International Conference on Electric Information and Control Engineering (ICEICE). IEEE, 2011. http://dx.doi.org/10.1109/iceice.2011.5777318.

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3

Su, Dehui, Xing Fang, and Zheng Fang. "Effectiveness and Downstream Impacts of Stormwater Detention Ponds Required for Land Development." In World Environmental and Water Resources Congress 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41114(371)314.

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4

Chang, Ni-Bin, Marty Wanielista, and Zachary Marimon. "Comparative Evaluation of Floating Treatment Wetlands for Nutrient Removal and Algal Toxin Control in Wet Detention Ponds." In International Low Impact Development 2015. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479025.017.

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5

Park, Daeryong, Sukhwan Jang, and Larry A. Roesner. "Multipurpose Detention Pond Design for Improved Watershed Management." In World Environmental and Water Resources Congress 2007. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40927(243)572.

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6

Krajewski, A., M. Wasilewicz, K. Banasik, and A. Sikorska. "Operation of detention pond in urban area—example of Wyścigi Pond in Warsaw." In The Fifth National Congress of Environmental Engineering. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315281971-29.

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7

Kaini, P., K. Artita, and J. W. Nicklow. "Evaluating Optimal Detention Pond Locations at a Watershed Scale." In World Environmental and Water Resources Congress 2007. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40927(243)170.

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8

Burger, Caroline. "Reuse of Unusable Land for a Stormwater Detention Pond." In Watershed Management Conference 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41143(394)68.

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9

Krishnappan, B. G., and J. Marsalek. "Flocculation and Transport of Cohesive Sediments Collected from a Stormwater Detention Pond." In Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40517(2000)153.

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10

Chang, Ni-Bin, A. James Crawford, and Marty Wanielista. "Field-Scale Evaluation of a Floating Media Bed Reactor for Nutrient Treatment in a Wet Detention Pond." In International Low Impact Development 2015. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479025.014.

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Звіти організацій з теми "Detention ponds"

1

Desiderati, Christopher. Carli Creek Regional Water Quality Project: Assessing Water Quality Improvement at an Urban Stormwater Constructed Wetland. Portland State University, 2022. http://dx.doi.org/10.15760/mem.78.

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Анотація:
Stormwater management is an ongoing challenge in the United States and the world at-large. As state and municipal agencies grapple with conflicting interests like encouraging land development, complying with permits to control stormwater discharges, “urban stream syndrome” effects, and charges to steward natural resources for the long-term, some agencies may turn to constructed wetlands (CWs) as aesthetically pleasing and functional natural analogs for attenuating pollution delivered by stormwater runoff to rivers and streams. Constructed wetlands retain pollutants via common physical, physicochemical, and biological principles such as settling, adsorption, or plant and algae uptake. The efficacy of constructed wetlands for pollutant attenuation varies depending on many factors such as flow rate, pollutant loading, maintenance practices, and design features. In 2018, the culmination of efforts by Clackamas Water Environment Services and others led to the opening of the Carli Creek Water Quality Project, a 15-acre constructed wetland adjacent to Carli Creek, a small, 3500-ft tributary of the Clackamas River in Clackamas County, OR. The combined creek and constructed wetland drain an industrialized, 438-acre, impervious catchment. The wetland consists of a linear series of a detention pond and three bioretention treatment cells, contributing a combined 1.8 acres of treatment area (a 1:243 ratio with the catchment) and 3.3 acre-feet of total runoff storage. In this study, raw pollutant concentrations in runoff were evaluated against International Stormwater BMP database benchmarks and Oregon Water Quality Criteria. Concentration and mass-based reductions were calculated for 10 specific pollutants and compared to daily precipitation totals from a nearby precipitation station. Mass-based reductions were generally higher for all pollutants, largely due to runoff volume reduction on the treatment terrace. Concentration-based reductions were highly variable, and suggested export of certain pollutants (e.g., ammonia), even when reporting on a mass-basis. Mass load reductions on the terrace for total dissolved solids, nitrate+nitrite, dissolved lead, and dissolved copper were 43.3 ± 10%, 41.9 ± 10%, 36.6 ± 13%, and 43.2 ± 16%, respectively. E. coli saw log-reductions ranging from -1.3 — 3.0 on the terrace, and -1.0 — 1.8 in the creek. Oregon Water Quality Criteria were consistently met at the two in-stream sites on Carli Creek for E. coli with one exception, and for dissolved cadmium, lead, zinc, and copper (with one exception for copper). However, dissolved total solids at the downstream Carli Creek site was above the Willamette River guidance value 100 mg/L roughly 71% of the time. The precipitation record during the study was useful for explaining certain pollutant reductions, as several mechanisms are driven by physical processes, however it was not definitive. The historic rain/snow/ice event in mid-February 2021 appeared to impact mass-based reductions for all metals. Qualitatively, precipitation seemed to have the largest effect on nutrient dynamics, specifically ammonia-nitrogen. Determining exact mechanisms of pollutant removals was outside the scope of this study. An improved flow record, more targeted storm sampling, or more comprehensive nutrient profiles could aid in answering important questions on dominant mechanisms of this new constructed wetland. This study is useful in establishing a framework and baseline for understanding this one-of-a-kind regional stormwater treatment project and pursuing further questions in the future.
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Effects of detention on water quality of two stormwater detention ponds receiving highway surface runoff in Jacksonville, Florida. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri864151.

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3

Hydrogeology and chemical quality of water and bottom sediment at three stormwater detention ponds, Pinellas County, Florida. US Geological Survey, 1993. http://dx.doi.org/10.3133/wri924139.

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4

Constituent-load changes in urban stormwater runoff routed through a detention pond-wetlands system in central Florida. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri854310.

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5

Efficiency of a stormwater detention pond in reducing loads of chemical and physical constituents in urban streamflow, Pinellas County, Florida. US Geological Survey, 1995. http://dx.doi.org/10.3133/wri944217.

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6

The effects of flow-path modification on water-quality constituent retention in an urban stormwater detention pond and wetland system, Orlando, Florida. US Geological Survey, 1996. http://dx.doi.org/10.3133/wri954297.

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