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- W2111287029 abstract "Water resources degeneration is accelerated by the discharge of untreated wastewater and its byproducts, hence, reuse of these wastes is a major contributor to sustaining fresh water for the coming decades. In this study, the reuse of polyaluminium water treatment sludge (PA-WTS) as a flocculant aid to improve the effluent quality of wastewater during primary sedimentation is evaluated and presented. PA-WTS was collected from Gabba water treatment plant (Gabba WTP) Uganda, after the coagulation-flocculation process that makes use of aluminium chlorohydrate (ACH). The average aluminium residue concentration in PA-WTS was 3.4 mg/L. During this study, batch laboratory experiments were conducted in a jar-test apparatus in which different doses of PA-WTS were added. The results obtained showed a decrease in total suspended solids (TSS), chemical oxygen demand (COD), total ammonium nitrogen (TAN), and total phosphates (TP) in the supernatant after 30 min of settlement. The optimal PA-WTS dosage of 37.5 mL/L significantly (P<0.05) increased the TSS, TP and COD removal efficiencies by 15, 22 and 30%, respectively. It can be concluded that the PA-WTS positively complimented the sedimentation process in the primary treatment of wastewater to achieve better effluent quality. Key words: Aluminium chlorohydrate, poly aluminium sludge, reuse, wastewater, water treatment sludge" @default.
- W2111287029 created "2016-06-24" @default.
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- W2111287029 date "2013-04-30" @default.
- W2111287029 modified "2023-09-26" @default.
- W2111287029 title "Effect of polyaluminium chloride water treatment sludge on effluent quality of domestic wastewater treatment" @default.
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- W2111287029 doi "https://doi.org/10.5897/ajest12.194" @default.
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