<![CDATA[Liquid coagulant from Cengar clay was used for peat water treatment. The steps forproducing liquid coagulant were clay calcination at 500 o C for 3 hours and extraction by0.2 mol H 2 SO 4 solution with variation of temperature (30, 60, 100 o C) and time (1, 2, 3hours). The coagulants were tested for peat water coagulation by measuring pH,turbidity, and TDS. The results were compared to PERMENKES No.416/MENKES/PER/IX/1990 “Tentang Syarat-syarat dan Pengawasan Kualitas Airâ€. After coagulation,the parameters of peat water were improved. The pH value of peat water aftercoagulation was between 5.0-8.5, turbidity 2.0-6.5 NTU, and TDS 250-320 mg/L.Compared to No.416/MENKES/PER/IX/1990, turbidity and TDS from all samples aftercoagulation have met the water quality standard. The best coagulant was K 100-2 with thevalue of the parameters after coagulation were 8.39 of pH, 4.75 NTU of turbidity and258 mg/L of TDS. According to the results, it can be concluded that liquid coagulantfrom Cengar clay can be used for peat water treatment.]]>
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