Abstract
The use of plant-deriveded natural coagulants in water treatment systems is seen as solution to replace chemical coagulants. Among them, the Moringa oleifera has proved to be one of the most effective natural, low - cost, environmentally friendly water coagulants. In this study, Moringa oleifera has used from 0 g (control sample without coagulants) to 2.0 g of Moringa oleifera seed powder in one liter of the Tien river water sample, coagulation time in 1 hour, 3 hours, 6 hours. The results of the study showed that Moringa oleifera seed powder has antibacterial ability when adding 0.4 g per liter of water treated. The water sample has TSS of 93.3 mg/l, COD of 101 mg/l, and the presence of 1530 MPN/100ml Coliform bacteria. After one hour coagulation of treatment, it reduced to TSS, COD, and Coliform were found to be 13.3 mg/l, 18.7 mg/l, and 9 MPN/100ml, respectively. The efficiency of reduction for 76.92% TSS, 81.57% COD, and 99.41% Coliform.
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