Evaluating the Use of Alum Sludge in The Treatment of Wastewater Effluent from Namataala Wastewater Stablisation Ponds-Mbale
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Date
2024-04-12
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Abstract
This research focuses on the evaluation of the use of alum sludge from the Manafwa water treatment plant, which is cost-effective and environmentally friendly for treating wastewater effluent from WWSPs. The case study was done on Namataala wwsps in mbale city with discharges of 24499.98m3/day of wastewater into Namataala wetland, which contains high levels of BOD, COD, and nutrients.
The values of the parameters of the sampling point or discharge point were above the permissible limits: a COD of 235.67±14.01 mg/l, a BOD of 192.02±1.53 mg/l, total nitrogen of 49.7±4.51 mg/l, and total phosphorous of 30.6±0.21 mg/l.
Alum sludge from water treatment plants is a readily available material obtained as a result of using aluminum sulphate as a primary coagulant in water treatment. From this research, alum sludge showed potential to produce an alum sludge extract that was used in the coagulation process in wastewater treatment.
The parameters of interest we based them on were BOD, COD, TN, and TP. After taking wastewater through the coagulation process, which was followed by sedimentation, alum sludge extract showed a percentage reduction of BOD-79.9%, COD-79.7%, TN-87.7% and TP-92.2%. Therefore, alum sludge has a potential to be used in treatment of wastewater.