EFEK VOLUME KOAGULAN CAIR DARI LEMPUNG ALAM DALAM PENGOLAHAN AIR GAMBUT

Abstract

Cengar clay has been studied as a source of coagulant but did not provide satisfactory results. In this research the effectivity of liquid coagulant was studied by differences volume of liquid coagulant that given to amount of peat water. Liquid coagulant was made by calcination at 700°C for 2 hours and extracted with 0.2 mol H2SO4 solution at 80°C for 2 hours. The liquid coagulant was characterized using AAS. Coagulation of peat water was done using variation of coagulant volume (35,70 and 105 mL) by measuring parameters of color and turbidity. The results of peat water parameters after treatment were compared to PP No.82 of 2001 on Water Quality and Water Pollution Control and PERMENKES 416/ Health Minister/PER/IV/1990 about Drinking Water Quality. Characterization of liquid coagulant showed that the contents of Al(III) was 223.72 mg L-1 and Fe(III) was 10.38 mg L-1. The result of coagulation showed that K 35:700 gave higher removal percentage than the other with removal efficiency of color and turbidity were 88.9 % and 72.4 % respectively . The turbidity result was in accordance with the quality standards of clean water.