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Journal articles on the topic 'Dissolved oxygen Dam removal'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Abbott, Katherine M., Peter A. Zaidel, Allison H. Roy, Kristopher M. Houle, and Keith H. Nislow. "Investigating impacts of small dams and dam removal on dissolved oxygen in streams." PLOS ONE 17, no. 11 (2022): e0277647. http://dx.doi.org/10.1371/journal.pone.0277647.

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Small surface-release dams are prevalent across North American watersheds and can alter stream flow, thermal regimes, nutrient dynamics, and sediment transport. These dams are often implicated as a cause of negative water quality impacts—including reduced dissolved oxygen (DO)—and dam removal is increasingly employed to restore natural stream processes and improve DO. Published impacts of small dams on DO vary widely across sites, and even less is known about the extent and timescale of DO recovery following removal. Therefore, we sought to quantify the effects of small dams and dam removal on

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Zhang, Yiding, Li Zhang, and William J. Mitsch. "Predicting river aquatic productivity and dissolved oxygen before and after dam removal." Ecological Engineering 72 (November 2014): 125–37. http://dx.doi.org/10.1016/j.ecoleng.2014.04.026.

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3

Tian, Zhuang, Can Wang, and Min Ji. "Full-scale dissolved air flotation (DAF) equipment for emergency treatment of eutrophic water." Water Science and Technology 77, no. 7 (2018): 1802–9. http://dx.doi.org/10.2166/wst.2018.046.

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Abstract Eutrophication of urban rivers has caused severe environmental problems due to the pollution from point and diffuse sources. Although eutrophication can be alleviated by reducing the input to the river system, fast-treating terminal control technologies, especially under emergent situations, should be developed to reduce risks induced by eutrophication. The present study developed an emergency purification device based on dissolved air flotation (DAF) technology. After equipment commissioning and parameter optimization for applications in the field of engineering, the device was found

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Pit, Sovannary, Jirawat Sangpreedeekorn, Theerayut Phengsaart, and Dao Janjaroen. "Effect of UV-degraded microplastics on Dissolved Air Flotation (DAF) removal." E3S Web of Conferences 612 (2025): 03001. https://doi.org/10.1051/e3sconf/202561203001.

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Microplastics (MPs) are ubiquitous environmental pollutants that cause significant effects on the aquatic ecosystem and human health, including challenging water treatment systems due to their small particle size and high environmental persistence. This study aims to investigate the effect of ultraviolet (UV) radiation on two types of MPs, polypropylene (PP) and polystyrene (PS), by using the dissolved air flotation (DAF) process. In this work, MPs in the size ranges (300-500 μm) were subjected to controlled UVC exposure to simulate environmental weathering. After 30 days of irradiation, the r

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5

Chung, Wayne, and Stephanie Young. "Evaluation of a chemical dissolved air flotation system for the treatment of restaurant dishwasher effluent." Canadian Journal of Civil Engineering 40, no. 12 (2013): 1164–72. http://dx.doi.org/10.1139/cjce-2012-0357.

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Restaurant dishwashers consume a large quantity of fresh water and produce significant amounts of high strength oily wastewater which may cause serious problems when discharged into the sewer. An analysis of restaurant dishwasher effluent (RDE) from a busy upscale restaurant identified high levels of oil and grease, chemical oxygen demand (COD), biochemical oxygen demand (BOD), alkalinity, pH, and chlorine, but low levels of nitrogen and phosphorus. In this study, RDE was treated using an internationally patented chemical dissolved air flotation (chemical DAF) system. The chemical DAF system w

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Tong, Kun, Yi He Zhang, Jia Cai Xie, and Qi Hui Song. "Treatment of Heavy Oil Wastewater with Two Stages DAF Combined with ASP and I-BF Process - A Field Pilot Test." Advanced Materials Research 518-523 (May 2012): 2950–55. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2950.

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A field pilot test was constructed on a two stage Dissolved Air Floatation (DAF) combined with Activated Sludge Process (ASP) and Immobilized microorganism biological filter (I-BF) has been constructed in Liaohe oilfield, China to treat heavy oil wastewater with large amounts of dissolved recalcitrant organic compounds and low nutrient of nitrogen and phosphorus. By operating the system for 185 days, chemical oxygen demand (COD) removal rates were 67.9 % and 88.4 % in DAF and I-BF effluents, respectively. Environment Scanning electron microscope (ESEM) showed that large quantity of filamentous

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Del Nery, V., M. H. Z. Damianovic, R. B. Moura, E. Pozzi, E. C. Pires, and E. Foresti. "Poultry slaughterhouse wastewater treatment plant for high quality effluent." Water Science and Technology 73, no. 2 (2015): 309–16. http://dx.doi.org/10.2166/wst.2015.494.

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This paper assesses a wastewater treatment plant (WWTP) regarding the technology used, as well as organic matter and nutrient removal efficiencies aiming to optimize the treatment processes involved and wastewater reclamation. The WWTP consists of a dissolved air flotation (DAF) system, an upflow anaerobic sludge blanket (UASB) reactor, an aerated-facultative pond (AFP) and a chemical-DAF system. The removal efficiencies of chemical oxygen demand (COD) (97.9 ± 1.0%), biochemical oxygen demand (BOD) (98.6 ± 1.0%) and oil and grease (O&G) (91.1 ± 5.2%) at the WWTP, the nitrogen concentration

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8

Choi, Miyoung, Dong Whan Choi, Jung Yeol Lee, Young Suk Kim, Bun Su Kim, and Byoung Ho Lee. "Removal of pharmaceutical residue in municipal wastewater by DAF (dissolved air flotation)–MBR (membrane bioreactor) and ozone oxidation." Water Science and Technology 66, no. 12 (2012): 2546–55. http://dx.doi.org/10.2166/wst.2012.429.

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Growing attention is given to pharmaceutical residue in the water environment. It is known that pharmaceuticals are able to survive from a series of wastewater treatment processes. Concerns regarding pharmaceutical residues are attributed to the fact that they are being detected in water and sediment environment ubiquitously. Pharmaceutical treatment using a series of wastewater treatment processes of the DAF (dissolved air flotation)–MBR (membrane bioreactor)–ozone oxidation was conducted in the study. DAF, without addition of coagulant, could remove CODcr (chemical oxygen demand by Cr) up to

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Tetteh, Emmanuel Kweinor, and Sudesh Rathilal. "INVESTIGATING DISSOLVED AIR FLOTATION FACTORS FOR OIL REFINERY WASTEWATER TREATMENT." CBU International Conference Proceedings 6 (September 25, 2018): 1173–77. http://dx.doi.org/10.12955/cbup.v6.1311.

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The global demand for petrochemical and petroleum industry products unavoidably generates large volumes of oil refinery wastewater (ORW). The complete treatment, reclamation and disposal of the ORW to an acceptable environmental limit is currently a challenge to most of the petroleum industries. With the current development in conventional treatment methods viz. coagulation, dissolved air flotation (DAF), and biological and membrane separation processes. DAF, which is well-established separation process, effectively employs microbubbles as a carrier phase for separation. Although, DAF is frequ

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Jamieson, Bryan Lee, Alex Augusto Gonçalves, and Graham A. Gagnon. "Evaluation of treatment options for Atlantic Canadian seafood processing plant effluentA paper submitted to the Journal of Environmental Engineering and Science." Canadian Journal of Civil Engineering 37, no. 1 (2010): 167–78. http://dx.doi.org/10.1139/l09-127.

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The purpose of this study was to evaluate different effluent treatment options for Atlantic Canadian seafood processing plants. Bench-scale testing with a 25-mesh screen, sedimentation (SED), and dissolved air flotation (DAF) was conducted. Treatment by SED and DAF was successful in reducing contaminant concentrations with maximum observed percent reductions: biochemical oxygen demand, BOD5 (90%); chemical oxygen demand, COD (60%); turbidity (99%); total suspended solids, TSS (95%); and ammonia nitrogen, NH3-N (50%). Bench-scale 25-mesh screen runs for select effluent types showed poor reducti

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Azhar, Muhammad Rizwan, Paul Nolan, Keith Cadee, and Mehdi Khiadani. "Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon." Water 14, no. 23 (2022): 3825. http://dx.doi.org/10.3390/w14233825.

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Conventional wastewater treatment processes require extensive energy inputs for their operations. Biologically enhanced primary treatment (BEPT) is a promising technology to capture incoming organics that may be utilized to produce biogas and potentially hydrogen with further downstream processing. This study involved a biologically enhanced primary treatment (BEPT) of raw wastewater at bench and pilot-scale using activated sludge (AS) addition and dissolved air flotation (DAF) using raw wastewater at a municipal wastewater facility in Western Australia with average chemical oxygen demand of ~

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Sandbank, E., and L. J. van Vuuren. "Microalgal Harvesting by in situ Autoflotation." Water Science and Technology 19, no. 12 (1987): 385–87. http://dx.doi.org/10.2166/wst.1987.0178.

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Dissolved Air Flotation (DAF) principles were applied to harvest microalgae from high rate algal pond (HRAP) effluents in a highly simplified system which consisted of an open channel and a dosing pump only. Polyelectrolyte solution is dosed into the channel through a diffuser in the vicinity of a paddle wheel, where rapid mixing occurs. Slow mixing takes place in the channel. While flocs grow, oxygen bubbles resulting from algae photosynthetic activity are entrapped. Floating flocs are removed manually at the end of the channel. Removal efficiencies of 90% were obtained at a 10 mg polyelectro

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El, Nadi M.H* El Sergany F.A.R El Hosseiny O.M. "INDUSTRIAL WASTEWATER TREATMENT IN DAIRY INDUSTRY." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 11 (2016): 295–301. https://doi.org/10.5281/zenodo.166856.

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This research to get the optimal solution for the treatment of wastewater for Labanita dairy factory, which lies in Noubariya City, Behira Governorate, Egypt. A pilot lab scale was erected in the Labanita dairy factory laboratory. The pilot consisted from feeding tank followed by DAF unit followed by SBR unit. Different operation scenarios had been applied to determine the optimal operation procedure and the best removal efficiency. Samples were taken continuously for 3 months from the inlet, outlet and between the units of treatment to determine the parameters (COD, TSS, TDS and pH), in order

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Widianingtias, Mitria, Shinobu Kazama, Sawangjang Benyapa, and Satoshi Takizawa. "Assessment of Water Reclamation and Reuse Potential in Bali Province, Indonesia." Water 15, no. 14 (2023): 2642. http://dx.doi.org/10.3390/w15142642.

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Bali Province, Indonesia, experiences serious water shortages and groundwater over-abstraction due to rapidly increasing water demand. Therefore, this study aimed to assess the potential for water reclamation and reuse in Bali Province, focusing on the operational performance of two wastewater treatment plants (WWTPs). Although the Suwung WWTP could increase its treatment capacity to produce reclaimed water for irrigation and landscape, there are multiple management issues to be addressed, including fluctuating water demand, limited customer base beyond hotels, concerns about water quality and

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15

Reis, Rafaela Inês dos, and Diego De Souza Sardinha. "Transporte fluvial de sedimentos e nutrientes a montante do Reservatório da Hidrelétrica Caconde, bacia do Alto Rio Pardo (MG)." Revista Brasileira de Geografia Física 14, no. 5 (2021): 2646. http://dx.doi.org/10.26848/rbgf.v14.5.p2646-2663.

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Um dos principais mecanismos de perda de nutrientes ocorre por meio da erosão hídrica do solo. Como o Rio Pardo é o principal afluente do Reservatório da Hidrelétrica Caconde, utilizado para geração de energia elétrica, captação de água, pesca e lazer, este trabalho avaliou o transporte fluvial de sedimentos e nutrientes à montante deste. Para isso, as águas foram monitoradas uma vez por mês, entre maio de 2018 a abril de 2019 para os seguintes parâmetros, temperatura, pH, condutividade elétrica, oxigênio dissolvido, turbidez, nitrato, fosfato, sulfato, sólidos totais (ST), dissolvidos (STD) e

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16

Penetra, R. G., M. A. P. Reali, E. Foresti, and J. R. Campos. "Post-Treatment of Effluents from Anaerobic Reactor Treating Domestic Sewage by Dissolved-Air Flotation." Water Science and Technology 40, no. 8 (1999): 137–43. http://dx.doi.org/10.2166/wst.1999.0405.

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This paper presents the results of a study performed with a lab-scale dissolved-air flotation (LSDAF) unit fed with previously coagulated effluent from a pilot scale up-flow anerobic sludge blanket (UASB) reactor treating domestic sewage. Physical operational conditions for coagulation (rapid mix) and flocculation/flotation were maintained constant. Chemical (FeCl3) dosages ranged from 30 to 110 mg.l−1. The effect of pH was also verified in the range of 5.1 to 7.6 for each dosage. Best results were achieved for 65 mg.l−1 of FeCl3 and pH values between 5.3 and 6.1. For these conditions, the rem

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17

Dada, Saubana Olorunsola, Chidambaram Thamariselvan, Mahmood Jebur, and Sumith Ranil Wickramasinghe. "Innovative Approaches to Poultry Processing Wastewater Treatment: The Stainless Steel Ultrafiltration Membrane as a Viable Option." Membranes 13, no. 11 (2023): 880. http://dx.doi.org/10.3390/membranes13110880.

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In pursuit of sustainability, we explored replacing conventional dissolved air floatation (DAF) in poultry processing wastewater (PPW) treatment with a precisely tuned 0.02 µm stainless-steel ultrafiltration (SSUF) membrane. SSUF is a robust, homogenously porous membrane with strong chemical resistance, ease of cleaning, and exceptional resistance to organic fouling. Unlike polymeric membranes, it can be regenerated multiple times, making it a cost-effective choice due to its compatibility with harsh chemical cleaning. The PPW used for the study was untreated wastewater from all processing uni

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18

Dizayee, Kasro Kakil Hassan, Adil Mohammed Raheem, and Simon J. Judd. "The Cost Benefit of Refinery Effluent Pretreatment Upstream of Membrane Bioreactors." Membranes 13, no. 8 (2023): 715. http://dx.doi.org/10.3390/membranes13080715.

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The established classical method of treating oil refinery effluent is flotation followed by biological treatment. Membrane bioreactors (MBRs) offer more advanced treatment, producing a clarified and potentially reusable treated effluent, but demand robust pretreatment to remove oil and grease (O&G) down to consistent, reliably low levels. An analysis of a full-scale conventional oil refinery ETP (effluent treatment plant) based on flotation alone, coupled with projected performance, energy consumption and costs associated with a downstream MBR, have demonstrated satisfactory performance of

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Penetra, R. G., M. A. P. Reali, and J. R. Campos. "Influence of flocculation conditions in the performance of an experimental domestic sewage treatment plant consisting of an anaerobic expanded bed reactor followed by dissolved air flotation." Water Science and Technology 48, no. 6 (2003): 285–93. http://dx.doi.org/10.2166/wst.2003.0414.

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This paper presents the results of a study performed with an experimental domestic sewage treatment plant (240 m3.d-1 flow) consisting of expanded bed anaerobic reactor (EBAR) followed by dissolved air flotation (DAF) unit. For the flotation step, the anaerobic reactor effluent was previously coagulated with 50 mgFeCl3.l-1 and flocculated under different conditions (mean velocity gradient, Gf, and flocculation time, Tf). The Gf values were from 60 to 100 s-1 associated with 13 and 20 min Tf values. During the tests, the following operational conditions of the flotation unit were maintained: ch

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20

Żyłka, Radosław, Wojciech Dąbrowski, Paweł Malinowski, and Beata Karolinczak. "Modeling of Electric Energy Consumption during Dairy Wastewater Treatment Plant Operation." Energies 13, no. 15 (2020): 3769. http://dx.doi.org/10.3390/en13153769.

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The intensification of biological wastewater treatment requires the high usage of electric energy, mainly for aeration processes. Publications on energy consumption have been mostly related to municipal wastewater treatment plants (WWTPs). The aim of the research was to elaborate on models for the estimation of energy consumption during dairy WWTP operation. These models can be used for the optimization of electric energy consumption. The research was conducted in a dairy WWTP, operating with dissolved air flotation (DAF) and an activated sludge system. Energy consumption was measured with the

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21

Jaya Chithra S. K., Saranya S. B., V. Viji, R. Pradeep Kumar, Savitha P., and Sojomon Mathew. "Comparative Study of Water Quality from Two Major Dam Reservoirs of Thiruvananthapuram District, Kerala." UTTAR PRADESH JOURNAL OF ZOOLOGY 44, no. 22 (2023): 44–52. http://dx.doi.org/10.56557/upjoz/2023/v44i223715.

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Neyyar Dam and Aruvikkara Dam are two major dam reservoirs located at Thiruvananthapuram District of Kerala State. Physicochemical parameters of water from these two dam reservoirs were studied and compared during pre-monsoon and monsoon period from April 2018 to July2018.Water samples were collected from different sampling stations of the reservoirs and analyzed as per standard methods of APHA (2012). Water from Neyyar dam shows maximum value of all physicochemical parameters compared to water from Aruvikkara dam in the present study period. Water temperature, Total Dissolved Solids, Total Su

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Pružinska, Māra, and Ināra Laizāne. "DISSOLVED OKSYGEN LEVEL IN THE SKRIPSTI HPP DAM." HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 21 (April 19, 2017): 255–59. http://dx.doi.org/10.17770/het2017.21.3572.

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The aim of research was to explore the dissolved oxygen concentration on the Skripsti dam. The research was made in the vegetation period on the year of 2016. For the determination of the oxygen level in the dam was used the oximeter. Tests were made in the start of summer, in the end of summer and in the late autumn.

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Kong, Feng Qin, Yu Wang, and Yong Cheng. "Analysis of the DO Distribution and the Influencing Factors at the Downstream of Large Dam." Advanced Materials Research 919-921 (April 2014): 1206–10. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.1206.

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During the discharge of high dam, strong collision occurred along with the energy dissipation of the high velocity aerated flow. A great deal of air incorporated into the water and formed bubbles for the water was tumbling and gyration tempestuously. A large amount of air was released from the bubbles under the action of the hydrostatic pressure, and dissolved in the water, as a result, total dissolved gas (TDG) supersaturation was caused in the water. However, the supersaturation of the TDG has some important adverse effects on the surivival and reproduction of the aquatic, eapecially the fis

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Kumar Sepat, Manoj, and Hanumant Singh Chouhan. "Assessment of Water Parameters of Upper Kodera Dam in Mount Abu after Rainfall." Ecology, Environment and Conservation 29 (2023): 373–77. http://dx.doi.org/10.53550/eec.2023.v29i02s.060.

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The current research aims to investigate the effects of physicochemical factors on water quality, particularly during the summer at Upper Kodera Dam in Mount Abu (Raj), India. For the investigation of physicochemical factors such such as water and air temperature, pH, transparency, total hardness, dissolved oxygen, total alkalinity, and chemical oxygen demand, water samples from the dam were taken. The acquired findings were compared to WHOBIS (World Health Organization and Bureau of Indian Standard) values permitted limits for drinking water. A few parameters at various stations were found to

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Ibrahim, Aminu. "Comparative relationship between the water quality parameters and standard for drinking in Jibia Dam, Katsina State." HAFED POLY Journal of Science, Management and Technology 6, no. 1 (2025): 91–101. https://doi.org/10.4314/hpjsmt.v6i1.9.

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A study was conducted on the water quality of Jibia Dam to evaluate its suitability for human consumption. The research aimed to compare the water quality parameters of the dam with international drinking water standards. Poor monitoring of water quality could result in pollution and pose significant health risks. Water samples were collected from three locations during the wet and dry seasons of 2019/2020, and 13 parameters were analyzed using standard laboratory methods. These parameters included temperature, pH, electrical conductivity, total dissolved solids, turbidity, total hardness, chl

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26

Ilechukwu, Ifenna, Tolulope Abisola Olusina, and Odinaka Chidinma Echeta. "Physicochemical analysis of water and sediments of Usuma Dam, Abuja, Nigeria." Ovidius University Annals of Chemistry 31, no. 2 (2020): 80–87. http://dx.doi.org/10.2478/auoc-2020-0015.

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AbstractUsuma Dam is the major source of potable water in the Federal Capital Territory, Abuja, Nigeria. The physicochemical properties of water and sediment of the dam was assessed in this study to determine its quality. Electrical conductivity, pH, nitrate, phosphate, total dissolved solids, total suspended solids, turbidity, dissolved oxygen, biochemical oxygen demand, chemical oxygen demand, chloride, total hardness, phosphate, nitrate and sulfate were determined in the water samples. Total organic matter, total organic carbon and particle size were among the parameters analyzed in sedimen

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Singodia, R. R., N. K. Nirmal, and P. J. John. "Assessment of water quality of Kot Dam, Rajasthan, India, using water quality index." Journal of Environmental Biology 45, no. 2 (2024): 171–81. http://dx.doi.org/10.22438/jeb/45/2/mrn-5180.

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Aim: To assess the water quality of Kot Dam, located in the Jhunjhunu district of Rajasthan, India. Methodology: Physico-chemical parameters of water quality were monitored for two years (July 2021 to June 2023). The Water Quality Index (WQI), a widely accepted mathematical expression used to understand the trend in the quality of water bodies, was calculated based on the analysis of physicochemical parameters, including pH, total dissolved solids, hardness, alkalinity, dissolved oxygen, biological oxygen demand, chloride, sulphate, nitrate, calcium, magnesium, conductivity, and fluoride. Resu

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Kim, Byung R., and Charles E. Bohac. "Comparing Options for Improving Dissolved Oxygen Below Hydropower Dam." Journal of Energy Engineering 115, no. 2 (1989): 63–77. http://dx.doi.org/10.1061/(asce)0733-9402(1989)115:2(63).

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Mallam, I., A. S. Kutama, I. M. Ado, H. U. Baita, and Muhammad Waziri Musa. "Water Quality Assessment of Dutsin-Ma Dam, Katsina State, Nigeria." Dutse Journal of Pure and Applied Sciences 11, no. 1b (2025): 261–72. https://doi.org/10.4314/dujopas.v11i1b.28.

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Maintenance of healthy aquatic environment and production of sufficient food in reservoirs are primarily linked with successful reservoir culture operations. To keep the aquatic habitat favorable for existence of living organisms, physical and chemical factors like temperature, turbidity, pH, odor, dissolved gases (Oxygen and CO2), salts and nutrients as well as presence of heavy metals must be monitored regularly, individually or synergistically. The aim of this research was to assess the quality of water in Dutsin-Ma dam. During the study, physico-chemical parameters, Phytoplanktos diversity

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Guedes, Maria Teresa de Jesus Camelo, Mateus Ricardo Mendes Pessota, Catrine Ribeiro, et al. "Evaluation of the temporal evolution of the water quality of the Mãe d'Água Dam." Revista Brasileira de Ciência, Tecnologia e Inovação 9, no. 3 (2024): 346–54. https://doi.org/10.18554/rbcti.v9i3.8141.

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The Mãe d'Água Dam, located on the UFRGS campus, was built for landscape and research purposes, but over time suffered from pollution by solid waste, domestic effluents, and sediments, as well as eutrophication. This study aimed to evaluate the temporal evolution of dam water quality, comparing data with the parameters of CONAMA Resolutions nº 357/2005 and CONSEMA nº 355/2017, by calculating the Water Quality Index (WQI). Between December 2023 and April 2024, monitoring was performed at four distinct points of the dam, measuring parameters such as pH, turbidity, and dissolved oxygen, using a m

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Deribew, Ketema, Berhanu Erko, Seid Tiku Mereta, Delenasaw Yewhalaw, and Zeleke Mekonnen. "Assessing Potential Intermediate Host Snails of Urogenital Schistosomiasis, Human Water Contact Behavior and Water Physico-chemical Characteristics in Alwero Dam Reservoir, Ethiopia." Environmental Health Insights 16 (January 2022): 117863022211235. http://dx.doi.org/10.1177/11786302221123576.

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Introduction: Urogenital schistosomiasis is one of public health problems in lowland areas of Ethiopia. The disease is caused by Schistosoma haematobium. Freshwater Bulinus snails are intermediate hosts for the parasite transmission. The aim of the study was to assess intermediate host snails of urogenital schistosomiasis, human water contact behavior and physico-chemical characteristics of Alwero Dam reservoir. Methods: Bulinus snails were sampled from 12 sites of Alwero Dam. Bulinus snails were collected, identified and examined for natural schistosome infections. A total of 206 people were

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MD, Aliyu, Jauro IA, Haruna MY, and Mohammed AM. "Assessment of the Physico-Chemical Parameters of Gubi Dam, Bauchi State, Nigeria." Journal of Ecology & Natural Resources 9, no. 1 (2025): 1–13. https://doi.org/10.23880/jenr-16000407.

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The assessment of seasonal variation of the physico-chemical quality of Gubi dam, Bauchi State Northeastern Nigeria was investigated. The water samples were collected bi-monthly from July, 2022 to June, 2023 for the physico-chemical parameters. The water temperature, pH, conductivity, depth and total dissolved solids, carbon dioxide, biological oxygen demand, alkalinity, nitrate, phosphate, transparency were measured in-situ with the use of Mercury in glass thermometer, water testing kits, wagtech photometer model 7100 and turbid meter HACH 2100P respectively. The dissolved oxygen and biochemi

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KAMETANI, Hitoshi, Katsuaki HORIE, Noriaki KOUDA, et al. "Development of a dissolved oxygen improvement system for dam lake." Transactions of the JSME (in Japanese) 83, no. 853 (2017): 17–00147. http://dx.doi.org/10.1299/transjsme.17-00147.

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Fu, Jin Xiang, Jun Shang, and Yu Hua Zhao. "Simultaneous Removal of Iron, Manganese and Ammonia from Groundwater in Single Biofilter Layer Using BAF." Advanced Materials Research 183-185 (January 2011): 442–46. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.442.

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Biological aerated filter (BAF) was employed to remove iron, manganese and ammonia from groundwater. The filter was in continuous operation under hydraulic loading of 3m3/m2.h. The influence of air-water ratio, the removal effects of iron, manganese and ammonia respective, and the oxidation of the three pollutants, the change of dissolved oxygen along the filter depth were investigated in this research. And the results was obtained, that the optimal air-water ratio was determined by 3, which made the dissolved oxygen concentration in the filter central be 4.75mg/l, and the removal of iron, man

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Mangi, Halima O., Simon M. Onywere, and Esther C. Kitur. "Fish Productivity Response to Water Quality Variations: A Case Study of Nyumba ya Mungu Dam, in Pangani Water Basin, Tanzania." International Journal of Ecology 2023 (July 24, 2023): 1–11. http://dx.doi.org/10.1155/2023/7353898.

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Fish habitat degradation, such as water pollution due to the rapid expansion of incompatible land uses, is one of the noteworthy challenges to freshwater ecosystems. Elevated contents of nutrients and contaminants in water are some of the imperative challenges. This research was conducted to investigate the link between water qualities and fish productivity in the Nyumba ya Mungu Dam, whose fishery potential had decreased by 95% between 1972 and 2018. Physicοchemical characteristics, namely, temperature, pH, dissolved oxygen (DO), turbidity, total nitrogen, total phosphorus, chlorophyll a, and

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Annpoorna Sharma and Dr. Manoj Singh. "Biotic and Abiotic Components of The River." International Journal of Scientific Research in Science and Technology 11, no. 5 (2024): 109–17. http://dx.doi.org/10.32628/ijsrst2411428.

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This study offers a comprehensive analysis of the physico-chemical parameters of the Sarodha Dam in Kabirdham, Chhattisgarh, over three distinct periods: pre-autumn, autumn, and post-autumn of 2007. Key parameters examined include temperature, velocity, total solids, total suspended solids, total dissolved solids, turbidity, pH levels, dissolved oxygen content, free CO2 concentration, biochemical oxygen demand (BOD), chemical oxygen demand (COD), alkalinity, chlorides, sulphate levels, and fish species identification. The research identified 36 distinct fish species within the dam, underscorin

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Saraswat, Heena, and Meenakshi Solanki. "WATER QUALITY ASSESSMENT OF PUNASA DAM (INDIRA SAGAR DAM), MADHYA PRADESH." International Journal of Advanced Research 9, no. 02 (2021): 501–8. http://dx.doi.org/10.21474/ijar01/12476.

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The Indirasagar Dam (Punasa Dam) is a multipurpose key project of Madhya Pradesh on the Narmada river at Narmada Nagar in Khandwa (Tehsil of West Nimar district) Madhya Pradesh in India.The physical and chemical properties of water including temperature, pH, transparency, dissolved oxygen, biological oxygen demand, hardness, nitrate, calcium and phosphorus concentration, were monitored from October 2018 to September 2019. The physical and chemical parameters were analyzed as per APHA, revealed that there were fewer variations in the physicochemical parameters and results received through the e

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Luo, Xia, Xinyi Xiang, Guoyi Huang, Xiaorui Song, Peijia Wang, and Kaidao Fu. "Bacterial Abundance and Physicochemical Characteristics of Water and Sediment Associated with Hydroelectric Dam on the Lancang River China." International Journal of Environmental Research and Public Health 16, no. 11 (2019): 2031. http://dx.doi.org/10.3390/ijerph16112031.

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Research on bacterial abundance in water column and sediment of dammed rivers remain poorly understood, despite their importance to biogeochemical processes, benthic ecology, and bioremediation. The present study investigates the water and sediment bacteria by epifluorescence microscopy in the reservoir (above the dam site), as well as in the downstream river stretches (below-dam site) at the middle reach of Lancang River during the wet, the normal and the dry seasons. The results demonstrated that the reservoir operating regime (water discharge variations) and strong precipitation promoted si

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Oladeji, S. O. "Evaluation of physicochemical parameters in wastewater from Muhammad Ayuba dam in Kazaure, Jigawa state, Nigeria." Archives of Agriculture and Environmental Science 5, no. 4 (2020): 482–88. http://dx.doi.org/10.26832/24566632.2020.050408.

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Evaluation of physicochemical parameters namely alkalinity, biological oxygen demand (BOD), chemical oxygen demand (COD), conductivity, dissolved oxygen (DO), hardness, pH and total dissolved solids (TDS) in the wastewater samples collected from Muhammad Ayuba dam in Kazaure, Nigeria. The study was conducted during harmattan season for a period of three months from November, 2019 – January, 2020. All the parameters were analysed using conventional methods. The results showed their concentrations were in the range of 1.00 – 1.50 mg/L for alkalinity, 3.00 – 3.45 mg/L for BOD, 12.45 – 24.00 mg/L

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Baskaran, K., P. H. Scott, and M. A. Connor. "Biofilms as an Aid to Nitrogen Removal in Sewage Treatment Lagoons." Water Science and Technology 26, no. 7-8 (1992): 1707–16. http://dx.doi.org/10.2166/wst.1992.0614.

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A pilot study of sewage treatment lagoons near Melbourne indicated that the best way to enhance nitrogen removal in such lagoons was to promote nitrification. Combined algal/bacterial biofilms grown on surfaces immersed in the lagoons showed potential for greatly increasing the extent of nitrification. A laboratory study was undertaken to determine the effect of pH, dissolved oxygen concentration, temperature and other factors on the nitrifying capabilities of such biofilms; effective nitrification was observed at temperatures down to 10°C, at pH's down to 5.5 and at dissolved oxygen levels do

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Köse, Esengül. "A GIS Based Study to Investigate of the Ecological Impacts of Successive Dams on Surface Water Quality: A Review of the Sakarya Basin, Türkiye." Биология внутренних вод, no. 6 (November 1, 2023): 762–63. http://dx.doi.org/10.31857/s0320965223060153.

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The present study aimed to assess the status of successive dams on surface water quality, especially in reducing organic pollution levels, and their effects on the ecological life were investigated. Water samples were collected seasonally from three dam’s monitoring stations. Temperature, pH, dissolved oxygen, electrical conductivity, turbidity, ammonium nitrogen, nitrite nitrogen, nitrate-nitrogen, sulfate, total phosphorus, chemical oxygen demand, biochemical oxygen demand and total hardness parameters were measured in surface waters. The Geographic Information System (GIS) was used to produ

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Barnard, James L., and P. G. J. Meiring. "Dissolved Oxygen Control in the Activated Sludge Process." Water Science and Technology 20, no. 4-5 (1988): 93–100. http://dx.doi.org/10.2166/wst.1988.0157.

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The increased cost of energy and the need for biological removal of plant nutrients resulted in a renewed interest in dissolved oxygen control in the activated sludge process. Back-up systems are required to prevent overaeration during the night which may be detrimental to the nutrient removal process. Full-scale experience with both fine bubble and surface aerators are described.

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Slade, A. H., S. M. Anderson, and B. G. Evans. "Nitrogen fixation in the activated sludge treatment of thermomechanical pulping wastewater: effect of dissolved oxygen." Water Science and Technology 48, no. 8 (2003): 1–8. http://dx.doi.org/10.2166/wst.2003.0446.

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N-ViroTech, a novel technology which selects for nitrogen-fixing bacteria as the bacteria primarily responsible for carbon removal, has been developed to treat nutrient limited wastewaters to a high quality without the addition of nitrogen, and only minimal addition of phosphorus. Selection of the operating dissolved oxygen level to maximise nitrogen fixation forms a key component of the technology. Pilot scale activated sludge treatment of a thermomechanical pulping wastewater was carried out in nitrogen-fixing mode over a 15 month period. The effect of dissolved oxygen was studied at three l

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Naval, Ramesh M. "Study of Drinking Water Quality Parameters of Jaykwadi Dam." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 2971–73. http://dx.doi.org/10.22214/ijraset.2021.37039.

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This study is restricted in terms of water quality for drinking purpose. Various Physico-chemical Parameters like pH, conductivity. TDS are measured in laboratory by using digital pH meter, digital conductivity meter and TDS recording kit. By sung standard laboratory methods the Parameters Such as sodium, and potassium by Flame photometry. Calcium, Magnesium, Sodium, Potassium, Sulphate, Nitrate, and Iron were estimated in the Laboratory. Total dissolved solids, TDS, was measured by evaporation method. Biochemical oxygen demand, BOD, represents the amount of oxygen consumed by bacteria and oth

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I.Ramesha and R. Kiran B. "Assessment of Physico-chemical characteristics of water and Water Quality Index of Jambadahalla Dam, Chikmagalur district, Karnataka." RESEARCH REVIEW International Journal of Multidisciplinary 3, no. 12 (2018): 14–17. https://doi.org/10.5281/zenodo.2108268.

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The present study deals with the assessment of water quality of Jambadahalla dam situated in Chikmagalur district, Karnataka state to know the status and suitability of water for human usage. Surface water samples were collected for a period of three seasons. The collected water sample subjected to analysis of various physico-chemical parameters viz. air and water temperature, pH, total dissolved solids, total alkalinity, dissolved oxygen, BOD, total hardness, calcium, magnesium, chloride, sulphate, nitrate and phosphate. According to classification of dam on the basis of total alkalinity and

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Akanbi-Gada, Mariam Abiola, Amina Owoleke Veronica, AS Oluwatobi, and Oyejimi Oyeleke Abdul-Majeed. "Biomonitoring of aquatic habitat using Apodu Dam in Malete, Moro local government area of Kwara state Nigeria as a case study." Annals of Marine Science 7, no. 1 (2023): 006–13. http://dx.doi.org/10.17352/ams.000031.

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Water bodies such as dams are an essential part of the ecosystems and the Apodu dam, a Local Government Area of Kwara State supplies water for the populace of Malete. The water is used for both domestic and agricultural purposes. Given the proposed rural development in the catchment area of the Apodu dam, it becomes imperative therefore to do extensive biomonitoring of the dam before the development begins so as to determine the likely source of pollution in the dam as well as determine the health of the dam. Ten samples of both water and plants were collected at different sampling points desi

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Bhupendra, Pal Jatav. "Physico-Chemical Characteristics of Water of Juggar Dam Hindaun City, In Karauli District, Rajasthan." INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH AND CREATIVE TECHNOLOGY 10, no. 6 (2024): 1–4. https://doi.org/10.5281/zenodo.14175664.

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The paper deals with the analysis of some physico-chemical characteristics of water of a fresh water reservoir, Juggar dam Hindaun city, for a period of six months from January to June 2009. The study revealed that the parameters (Temperature, pH, Total dissolved solids, Dissolved Oxygen, Free Co2, Nitrate, Chloride, Calcium hardness, Magnesium, and Biochemical Oxygen Demand) are within the permissible limits and support good water quality in terms of cleanness and potability. The study emphasized the need to utilize this water body resource for pisciculture and drinking purposes by applicatio

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Li, Jun Guo, Yan Shi, and Ling Hong Wei. "Influence of Dissolved Oxygen on Trivalent Chromium Removal from Wastewater by GQSS." Applied Mechanics and Materials 251 (December 2012): 416–20. http://dx.doi.org/10.4028/www.scientific.net/amm.251.416.

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Gas quenching steel slag (GQSS) without any post treatment and modification could be utilized to remove Cr(III) from wastewater. Due to lower content of reductive material in GQSS, it was suggested that dissolved oxygen in solution should be declined slightly to the minimum with libration time, and then increased as the testing centrifuge tubes without lids because of dissolution of oxygen from atmosphere. Dissolved oxygen chromium original have significant influence on redox potential in solution. pH increased with the increasing of libration time because of dissolution of alkaline material i

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Sturm, B. S. McSwain, and R. L. Irvine. "Dissolved oxygen as a key parameter to aerobic granule formation." Water Science and Technology 58, no. 4 (2008): 781–87. http://dx.doi.org/10.2166/wst.2008.393.

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Much research has asserted that high shear forces are necessary for the formation of aerobic granular sludge in Sequencing Batch Reactors (SBRs). In order to distinguish the role of shear and dissolved oxygen on granule formation, two separate experiments were conducted with three bench-scale SBRs. In the first experiment, an SBR was operated with five sequentially decreasing superficial upflow gas velocities ranging from 1.2 to 0.4 cm s−1. When less than 1 cm s−1 shear was applied to the reactor, aerobic granules disintegrated into flocs, with corresponding increases in SVI and effluent suspe

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Patience, Machiva. "AN ASSESSMENT OF PHYSICOCHEMICAL AND MICROBIOLOGICAL CHARACTERISTICS OF WATER IN INSUKAMINI CATCHMENT WATER SOURCES AND THE SUITABILITY OF WATER FOR DOMESTIC USE." Gujarat Journal of Extension Education 33, no. 1 (2022): 12–15. http://dx.doi.org/10.56572/gjoee.2022.33.1.0003.

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Insukamini catchment depends on hand dug wells, sand water abstraction, dam, and borehole water sources for their domestic uses. On hand dug wells and sand water abstraction, people rely on natural filtration of bacteria and consider the water as safe, however the location and management of some of these water sources raise suspicion of possible contamination. The aim of this study was to assess drinking water quality in terms of selected physico-chemical and microbiological parameters, and people's perceptions on aesthetic parameters. Water samples were collected from five water sources, name

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