This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewa... more This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewage treatment plant-third extension (50 km south of Baghdad). This treatment plant is suffering some troubles associated with inefficient grit chambers due to lack of continuous maintenance resulting in abnormal grit deposits in the subsequent units of the treatment plant, especially digesters tanks. Field tests on these AGCs were conducted for evaluating their operating performance and their efficiency of removing TSS and oil and grease content during 30 days. Samples were taken from the inlet and outlet of each AGCs every 48 hour and were analyzed. The performance of these AGCs was also re-evaluated again by plotting the velocity distribution across a chosen chamber, at four sections perpendicular to the flow in the AGC. Certain operating problems were observed in the existing AGCs as a result of the experiments.
Coagulation-Flocculation processes play an important role in the treatment of water and wastewate... more Coagulation-Flocculation processes play an important role in the treatment of water and wastewater. Aluminum sulfate (alum) and polyelectrolyte (polymer) are the common chemical coagulants which are used in this process. The produced leachate in waste disposal places is considered to be one of the highly contaminated resources from the physical, chemical, and biological point of view. In Sulaimaniah, Tanjaro was found to be one of those solid waste landfill areas. Okra is used for the treatment of raw leachate samples that obtained directly from Sulaimaniah – Iraq solid waste sanitary landfill area. Fresh solid waste samples of the leachates were taken and tested for their heavy metals concentrations contents. It was found that the leachate contains a high amount of heavy metals of cadmium, chromium, copper, nickel, and zinc. By using conventional coagulants of alum, polymer and natural indigenous okra (as a primary coagulant or in combination with the other two primary coagulants) and by the jar testing, the best concentrations and pH values of the coagulants were determined. Analyzing the results, it was found that the optimal pH values were 6.65, 9.00 and 7.00 for alum, polymer and okra, respectively. In addition, the best dose of alum was1400 mg/L in which a removal of heavy metals yielded 45-80 %, while the best dose of polymer was 500 mg/L in which a removal of 70-95% was achieved. For okra, the best dose was 500 mg/L in which a removal of heavy metals yielded 20-100%. It was found that okra has an efficient coagulation power with respect to alum and polymer in removing heavy metals elements in solid waste leachates.
Coagulation-Flocculation processes play an important role in the treatment of water and wastewate... more Coagulation-Flocculation processes play an important role in the treatment of water and wastewater. Aluminum sulfate (alum) and polyelectrolyte (polymer) are the common chemical coagulants which are used in this process. The produced leachate in waste disposal places is considered to be one of the highly contaminated resources from the physical, chemical, and biological point of view. In Sulaimaniah, Tanjaro was found to be one of those solid waste landfill areas. Okra is used for the treatment of raw leachate samples that obtained directly from Sulaimaniah – Iraq solid waste sanitary landfill area. Fresh solid waste samples of the leachates were taken and tested for their heavy metals concentrations contents. It was found that the leachate contains a high amount of heavy metals of cadmium, chromium, copper, nickel, and zinc. By using conventional coagulants of alum, polymer and natural indigenous okra (as a primary coagulant or in combination with the other two primary coagulants) and by the jar testing, the best concentrations and pH values of the coagulants were determined. Analyzing the results, it was found that the optimal pH values were 6.65, 9.00 and 7.00 for alum, polymer and okra, respectively. In addition, the best dose of alum was1400 mg/L in which a removal of heavy metals yielded 45-80 %, while the best dose of polymer was 500 mg/L in which a removal of 70-95% was achieved. For okra, the best dose was 500 mg/L in which a removal of heavy metals yielded 20-100%. It was found that okra has an efficient coagulation power with respect to alum and polymer in removing heavy metals elements in solid waste leachates.
This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewa... more This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewage treatment plant-third extension (50 km south of Baghdad). This treatment plant is suffering some troubles associated with inefficient grit chambers due to lack of continuous maintenance resulting in abnormal grit deposits in the subsequent units of the treatment plant, especially digesters tanks. Field tests on these AGCs were conducted for evaluating their operating performance and their efficiency of removing TSS and oil and grease content during 30 days. Samples were taken from the inlet and outlet of each AGCs every 48 hour and were analyzed. The performance of these AGCs was also re-evaluated again by plotting the velocity distribution across a chosen chamber, at four sections perpendicular to the flow in the AGC. Certain operating problems were observed in the existing AGCs as a result of the experiments.
This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewa... more This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewage treatment plant-third extension (50 km south of Baghdad). This treatment plant is suffering some troubles associated with inefficient grit chambers due to lack of continuous maintenance resulting in abnormal grit deposits in the subsequent units of the treatment plant, especially digesters tanks. Field tests on these AGCs were conducted for evaluating their operating performance and their efficiency of removing TSS and oil and grease content during 30 days. Samples were taken from the inlet and outlet of each AGCs every 48 hour and were analyzed. The performance of these AGCs was also re-evaluated again by plotting the velocity distribution across a chosen chamber, at four sections perpendicular to the flow in the AGC. Certain operating problems were observed in the existing AGCs as a result of the experiments.
Coagulation-Flocculation processes play an important role in the treatment of water and wastewate... more Coagulation-Flocculation processes play an important role in the treatment of water and wastewater. Aluminum sulfate (alum) and polyelectrolyte (polymer) are the common chemical coagulants which are used in this process. The produced leachate in waste disposal places is considered to be one of the highly contaminated resources from the physical, chemical, and biological point of view. In Sulaimaniah, Tanjaro was found to be one of those solid waste landfill areas. Okra is used for the treatment of raw leachate samples that obtained directly from Sulaimaniah – Iraq solid waste sanitary landfill area. Fresh solid waste samples of the leachates were taken and tested for their heavy metals concentrations contents. It was found that the leachate contains a high amount of heavy metals of cadmium, chromium, copper, nickel, and zinc. By using conventional coagulants of alum, polymer and natural indigenous okra (as a primary coagulant or in combination with the other two primary coagulants) and by the jar testing, the best concentrations and pH values of the coagulants were determined. Analyzing the results, it was found that the optimal pH values were 6.65, 9.00 and 7.00 for alum, polymer and okra, respectively. In addition, the best dose of alum was1400 mg/L in which a removal of heavy metals yielded 45-80 %, while the best dose of polymer was 500 mg/L in which a removal of 70-95% was achieved. For okra, the best dose was 500 mg/L in which a removal of heavy metals yielded 20-100%. It was found that okra has an efficient coagulation power with respect to alum and polymer in removing heavy metals elements in solid waste leachates.
Coagulation-Flocculation processes play an important role in the treatment of water and wastewate... more Coagulation-Flocculation processes play an important role in the treatment of water and wastewater. Aluminum sulfate (alum) and polyelectrolyte (polymer) are the common chemical coagulants which are used in this process. The produced leachate in waste disposal places is considered to be one of the highly contaminated resources from the physical, chemical, and biological point of view. In Sulaimaniah, Tanjaro was found to be one of those solid waste landfill areas. Okra is used for the treatment of raw leachate samples that obtained directly from Sulaimaniah – Iraq solid waste sanitary landfill area. Fresh solid waste samples of the leachates were taken and tested for their heavy metals concentrations contents. It was found that the leachate contains a high amount of heavy metals of cadmium, chromium, copper, nickel, and zinc. By using conventional coagulants of alum, polymer and natural indigenous okra (as a primary coagulant or in combination with the other two primary coagulants) and by the jar testing, the best concentrations and pH values of the coagulants were determined. Analyzing the results, it was found that the optimal pH values were 6.65, 9.00 and 7.00 for alum, polymer and okra, respectively. In addition, the best dose of alum was1400 mg/L in which a removal of heavy metals yielded 45-80 %, while the best dose of polymer was 500 mg/L in which a removal of 70-95% was achieved. For okra, the best dose was 500 mg/L in which a removal of heavy metals yielded 20-100%. It was found that okra has an efficient coagulation power with respect to alum and polymer in removing heavy metals elements in solid waste leachates.
This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewa... more This paper falls into the studying of an aerated grit chamber (AGCs) within the Al-Rustamyah sewage treatment plant-third extension (50 km south of Baghdad). This treatment plant is suffering some troubles associated with inefficient grit chambers due to lack of continuous maintenance resulting in abnormal grit deposits in the subsequent units of the treatment plant, especially digesters tanks. Field tests on these AGCs were conducted for evaluating their operating performance and their efficiency of removing TSS and oil and grease content during 30 days. Samples were taken from the inlet and outlet of each AGCs every 48 hour and were analyzed. The performance of these AGCs was also re-evaluated again by plotting the velocity distribution across a chosen chamber, at four sections perpendicular to the flow in the AGC. Certain operating problems were observed in the existing AGCs as a result of the experiments.
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