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Improve Water Quality at the el-rahawy Drain and the Rosetta Branch, Egypt

Journal of Environmental Protection 2015年第10期6卷 1139-1148页

作者： Mohamed K. Mostafa Maha M. elshafei Robert W. Peters Department of Civil Construction and Environmental Engineering University of Alabama at Birmingham Birmingham USA Sanitary and Environmental Institute Housing and Building National Research Center Giza Egypt

The el-rahawy drain, is the major source of pollution along the Rosetta branch, receives primary treated wastewater from the Abu-Rawash Wastewater Treatment Plant (WWTP). The main purpose of this research was to manage water quality at the Rosetta branch by improving effluent water quality at the Abu-Rawash WWTP. This research involved attempting to determine the optimal dose of aluminum chloride (AlCl3) to reach an acceptable treatment at the Abu-Rawash WWTP. A dose of 2.0 mg of AlCl3 for each liter of wastewater was selected. Another approach involves discharging flow from Al-Buhairi Water Canal to the el-rahawy drain in order to increase the dissolved oxygen (DO) concentration and reduce pollutant concentrations at the el-rahawy drain. Applying these approaches will significantly improve water quality at the el-rahawy drain. The river pollutant (RP) modeling was also used to study the effect of improving water quality at the el-rahawy drain on the Rosetta branch water quality. The RP modeling showed that applying the proposed solutions will significantly improve water quality at the Rosetta branch.

关键词： Water Quality Modeling Aluminum Chloride Carbon Dioxide el-rahawy Drain Rosetta Branch Egypt

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Simulating the Effect of Improving Water Quality at the el-rahawy and the Tala Drains in the Rosetta Branch Water Quality

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Journal of Water Resource and Protection 2015年第16期7卷 1271-1279页

作者： Mohamed K. Mostafa Department of Civil Construction and Environmental Engineering University of Alabama at Birmingham Birmingham USA

The el-rahawy and the Tala drains are the major sources of pollution along the Rosetta branch. The el-rahawy drain receives primary treated wastewater from the Abu-Rawash Wastewater Treatment Plant (WWTP), while the Tala drain receives discharge from dairy industry and agricultural drainage, as well as domestic wastewater. This research involved attempting to study the effect of improving water quality on the el-rahawy and the Tala drains in the Rosetta branch water quality. Water quality at the el-rahawy drain is expected to improve after discharging water from the Al-Buhairi Water Canal to the el-rahawy drain and improving effluent water quality at the Abu-Rawash WWTP. Water quality at the Tala drain is expected to improve after constructing a new WWTP and improving effluent water quality at the dairy industry. The river pollutant (RP) modeling enabled studying the effect of improving water quality at the drains on the Rosetta branch water quality. The RP modeling showed that applying the proposed solutions would significantly improve water quality at the Rosetta branch.

关键词： el-rahawy Drain Tala Drain Aluminum Chloride Carbon Dioxide RP Modeling Rosetta Branch

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Improve Effluent Water Quality at Abu-Rawash WWTP Using Aluminum Chloride and Carbon Dioxide

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Journal of Water Resource and Protection 2015年第13期7卷 1049-1057页

作者： Mohamed K. Mostafa Department of Civil Construction and Environmental Engineering University of Alabama at Birmingham Birmingham AL USA

This research involved attempting to improve water quality at the Abu-Rawash WWTP by using aluminum chloride (AlCl3) as a coagulant combined with injection of carbon dioxide (CO2). The Abu-Rawash WWTP is the main source of water quality degradation at the Rosetta branch, Egypt. Sewage samples were collected from the effluent of the grit removal chamber. Jar tests were performed to estimate the optimum pH value and the coagulant dosage required to obtain acceptable treatment. eleven samples were prepared with equal dosages of aluminum chloride (10.0 mg/L) and different pH values. The optimal pH values for the elimination of the biological oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), and turbidity ranged from 6.10 to 6.20 for the aluminum chloride. Results indicated that the appropriate AlCl3 dosage was 2.0 mg/L, especially at pH between 6.1 and 6.2. The results also showed that the AlCl3 was cost effective, especially after reducing pH value. It is also more cost effective than the other proposed solutions such as changing the effluent path of the Abu-Rawash WWTP to the desert.

关键词： Aluminum Chloride Carbon Dioxide Jar Test Abu-Rawash WWTP el-rahawy Drain Egypt

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