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Academic literature on the topic 'Wastewater/Stormwater Treatment'
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Journal articles on the topic "Wastewater/Stormwater Treatment"
1
Lau, S. L., E. Khan, and M. K. Stenstrom. "Catch basin inserts to reduce pollution from stormwater." Water Science and Technology 44, no. 7 (2001): 23–34. http://dx.doi.org/10.2166/wst.2001.0381.
Full textAbstract:
Stormwater contamination represents the largest source of contaminants to many receiving waters in the United States, such as Santa Monica Bay in Los Angeles, California. Point sources to these same waters generally receive secondary or better treatment before they are released, and they are usually discharged through outfalls that diffuse the wastewater plume to prevent it from contacting the shoreline. Stormwaters receive no treatment and reach the receiving waters through a variety of ways, but most enter through catch basins or inserts to storm drains that terminate at the beach or in shallow coastal areas. Under these conditions, the stormwater discharge may have greater impact on the quality and utility of the receiving water than the treated wastewater discharges. One method of reducing pollution is to equip catch basins with an insert that can capture pollutants. A number of commercially available devices exist but few have been evaluated by independent parties in full-scale applications. A series of tests using bench and full-scale devices under both laboratory and field conditions were conducted to evaluate their ability to remove trash and debris, suspended solids and oil and grease in stormwaters. The results presented in the paper should provide a basis for future insert development and application.
2
Tredoux, Gideon, Peter King, and Lisa Cavé. "Managing urban wastewater for maximising water resource utilization." Water Science and Technology 39, no. 10-11 (1999): 353–56. http://dx.doi.org/10.2166/wst.1999.0681.
Full textAbstract:
The Atlantis Water Resource Management Scheme uses artificial recharge of urban stormwater and treated wastewater to augment the natural groundwater resource. The key to the success of the scheme is the fractionation of the stormwater into components of distinctly different quality, and the separate treatment of domestic and industrial wastewater for different end-uses. The groundwater exploitation strategy is largely controlled by water quality requirements. Reuse of domestic and industrial wastewater depends on quality parameters. Tertiary treated domestic effluent is destined for indirect reuse via the aquifer, while treated industrial wastewater is used together with spent regenerant brine and stormwater from the noxious trade area for preventing seawater intrusion. Both residential and industrial stormwater is separated into the base flow and storm flow components and utilised for various purposes. The sustainable operation of the water resource scheme serves as a prototype for the optimal use of water and protection of the environment.
3
Ozaki, Noriatsu, Takahiro Yamauchi, Tomonori Kindaichi, and Akiyoshi Ohashi. "Stormwater inflow loading of polycyclic aromatic hydrocarbons into urban domestic wastewater treatment plant for separate sewer system." Water Science and Technology 79, no. 7 (2019): 1426–36. http://dx.doi.org/10.2166/wst.2019.143.
Full textAbstract:
Abstract Polycyclic aromatic hydrocarbons (PAHs) are common contaminants present in wastewater, and determination of their sources is important for their management in the environment. In this study, stormwater loading of PAHs during rainfall periods was evaluated for sewage inflow into a wastewater treatment plant (WWTP) for a separate sewer system. To accomplish this, sewage inflow volumes, suspended solid concentrations, and PAH concentrations were measured during eight rainfall events and on two no-rainfall days at the inlet of the plant. Based on a comparison between the rainfall and no-rainfall loading quantified by the measurements, excess PAH loadings with stormwater were evaluated for the rainfall events. The relationship between rainfall intensity and stormwater loading was then used to evaluate long-term stormwater loadings of water and PAHs. Their contributions to the sewage inflow were 0.7% and 1.0% for 1 year for water and the sum of 16 measured PAHs, respectively. Our measurements and estimates demonstrate that direct stormwater inflow is not a primary source of PAHs to the plant for this separate sewer system.
4
Durchschlag, A., L. Härtel, P. Hartwig, et al. "Joint Consideration of Combined Sewerage and Wastewater Treatment Plants." Water Science and Technology 26, no. 5-6 (1992): 1125–34. http://dx.doi.org/10.2166/wst.1992.0554.
Full textAbstract:
Wastewater treatment plants, combined sewerage, catchment areas, storage tanks and overflows have to be regarded together. Stormwater runoff results in discharges at combined sewer overflows and higher pollutant loads in the effluent of the treatment plants. Characteristics of catchment areas and sewerage, number and capacity of storage tanks and overflows determine the characteristics of the combined water influent of the treatment plant. The plant has to cope with a higher hydraulic load and often with higher pollutant loads at the beginning of combined water flows. Some of the effects are displacement of sludge to the secondary clarifier, higher solids concentrations in the effluent and high loads of ammonia nitrogen for the nitrifying reactor. To decide on bigger stormwater storages or improvement of the treatment plant all effects in the whole system have to be considered. This can only be done with dynamic models, although simulation of combined water flows still have to be improved.
5
Chambers, P. A., M. Allard, S. L. Walker, et al. "Impacts of Municipal Wastewater Effluents on Canadian Waters: a Review." Water Quality Research Journal 32, no. 4 (1997): 659–714. http://dx.doi.org/10.2166/wqrj.1997.038.
Full textAbstract:
Abstract Domestic sewage is a major threat to receiving waters throughout the world. In Canada, a high proportion of the population (81%) is served by municipal wastewater treatment facilities. Nevertheless, discharges from wastewater treatment plants, stormwater sewers and combined sewers have caused adverse impacts on some lakes, rivers and coastal waters. The most publicly recognized impacts are shellfish harvesting restrictions and beach closures resulting from microbial contamination. Habitat degradation and contamination also occur and these, in turn, have altered the abundance and diversity of aquatic organisms. Our findings on the effects of municipal wastewater discharge suggest that there is a need to review sewage treatment requirements in Canada. Further research is also required on the interactive and cumulative responses to habitat degradation and to long-term exposure to persistent and bioaccumula-tive pollutants. Finally, an integrated approach to wastewater management is needed that addresses loadings from treatment plants, stormwater sewers, combined sewer overflows and other wastewater sources.
6
Dormoy, T., B. Tisserand, and L. Herremans. "Impact of the volume of rain water on the operating constraints for a treatment plant." Water Science and Technology 39, no. 2 (1999): 145–50. http://dx.doi.org/10.2166/wst.1999.0108.
Full textAbstract:
The new regulations require an increased amount of treatment of stormwater and a reduction of pollution loads discharged into the natural surroundings to be considered. Drainage systems therefore and particularly wastewater treatment plants should be sized correctly to cope with these peaks. Using a simulation software of wastewater treatment plant with activated sludge, such as SIMBAD, enables us to check that planned structures are appropriate in relation to the effluent quality requirements laid down, and to fix the most appropriate operating procedures. Operating constraints on a plant for treating stormwater are not negligible. It is advisable to allow for increased sludge production, O2 requirements and also sludge quality (fermentability).
7
Malmur, Robert. "Methods of drainage and transfer of rainwater." E3S Web of Conferences 116 (2019): 00049. http://dx.doi.org/10.1051/e3sconf/201911600049.
Full textAbstract:
With frequent heavy rainfalls in summer in Poland and fast-melting snow in spring leading to flooding of sewage systems (due to excessive filling levels in water receivers or difficulties with temporary retention of the excess stormwater), a variety of systems are being developed to facilitate transfer of the stormwater to water receivers. Outflow of the excess stormwater is usually ensured by the use of gravitational outflow collectors that connect stormwater drains with waterways. The transfer occurs during intensive precipitation, when the excess wastewater overflows through stormwater drains and is transferred directly to water receivers in order to relieve wastewater treatment plants or to minimize diameters of sewers. These systems are useful wherever the filling levels in waterways are not very high or the sewerage system is located relatively high with respect to the water receiver i.e. outflow collector is located on a steep slope. In such cases, the stormwater that flows through a waterway cannot be returned to the outflow collector. If the gravitational flow is impossible due to e.g. the excessive filling level of water receiver, stormwater can be transferred by means of a variety of modern solutions, such as retention and transfer reservoirs. These reservoirs are supposed to ensure partial retention of the excess stormwater and transfer of this water to water receivers, either gravitationally or forced mechanically, depending on the filling level in the waterway. The transfer reservoirs for the stormwater presented in this paper might be successfully used in modernization of current sewage systems, ensuring the reliability of operation and a more effective wastewater transfer than the systems used to date. All the reservoirs of this type are characterized by similar design and function and guarantee that the wastewater might be transferred regardless of the conditions in the water receiver.
8
Heinzmann, Bernd, and Ferdinand Sarfert. "An integrated water management concept to ensure a safe water supply and high drinking water quality on an ecologically sound basis." Water Science and Technology 31, no. 8 (1995): 281–91. http://dx.doi.org/10.2166/wst.1995.0321.
Full textAbstract:
For the city of Berlin and the surrounding areas a growth of the number of inhabitants is expected, resulting in a considerable increase in the water consumption. However, a sufficient quantity and an excellent quality of drinking water in the future can only be guaranteed through more integrated management of water resources. Artificial recharge of groundwater plays a key role in this approach. It includes the infiltration of treated surface water in a direct coordination to water catchment facilities. Investigations show, that other possibilities are: i) the reuse of sewage water, although there are still unsolved judicial issues, and ii) the use of stormwater. For both, an advanced treatment is necessary to meet the stringent quality requirements. Thus, the treatment is shifted more towards the sources of pollution, that means from the treatment of surface water to wastewater and stormwater to obtain an optimum water resource protection. Furthermore, the water is partly returned to the water cycle in order for it to remain within the region. Treated surface water, advanced treated wastewater, purified stormwater and treated weakly polluted combined wastewater from the combined system constitute favourable sources, in combination, for the replenishment of groundwater. Former wastewater irrigation fields in the area could be used. This also prevents re-dissolution of heavy metals in the polluted soil of the wastewater irrigation fields into the groundwater.
9
Abdelwahed, Marwa Mohamed Mohamed. "A Review of Wastewater Treatment Techniques." Volume 5 - 2020, Issue 8 - August 5, no. 8 (2020): 219–24. http://dx.doi.org/10.38124/ijisrt20aug163.
Full textAbstract:
With the rapid population growth, economic progress in addition to the global climate change (global warming), the demand for saving the limited natural resources become a huge challenge facing the world. Water is one of the natural resources that has become increasingly scarce and many of them are polluted by various human activities. Moreover, discharge untreated wastewater into surface waters such as river and lakes can causes human health problems and harm huge on the environmental through the negative impact on the wildlife, marine life and plants, as well as groundwater and surface runoff (stormwater, meltwater, rainwater) which can become polluted and can be lead also to negative economic impacts. Therefore, technologies of wastewater treatment have received global attention. The main objective of this paper is presents a literature review of some of the popular wastewater treatment techniques.
10
Michelbach, S. "Planning Stormwater Treatment of a Mountainous Urban Area." Water Science and Technology 27, no. 12 (1993): 231–36. http://dx.doi.org/10.2166/wst.1993.0308.
Full textAbstract:
Within the urban drainage system the sewer system, the wastewater treatment plant and the receiving waters form a functional unit The interactions between these three systems are of importance during the whole planning cycle. In particular, the sensitivity of the receiving waters should be more taken into account than has been done up to now. The extension of stormwater treatment for a small town in a mountainous area should be planned. A first study done by a different company working only with guidelines recommended specific volumes for stormwater tanks between 30 m3 and 70 m3 per ha impervious area Six new stormwater tanks with a total volume of 5000-6000 m3 were to be installed. For the community these values seemed to be unrealistically high. In discussion with the water management, they wanted to undertake a more realistic planning. The company Umwelt- und Fluid-Technik (UFT) was commissioned to work out a new study taking the specific conditions of the urban catchment into account