Studi Proses Elektrokoagulasi untuk Meningkatkan Kualitas Air Sungai sebagai Air Baku

Abstract

A river is one of the most important sources of raw water for clean water. The increase of population and the development of various industries resulted in reducing of river water quality that does not meet water quality standards while the human need for clean water is increasing. The low river water quality requires an effective and efficient treatment, such as by electrocoagulation. Electrocoagulation combines coagulation process with electricity without using chemicals. The purpose of this study was to determine the effect of variation of power supply voltage and electrode contact time with the water, and to determine the effect on parameters such as pH, color, turbidity, TSS, and phospate levels (PO4 3-) as an indicator of sewage pollution and get a combination of electrical voltage and contact time best on the electrocoagulation process wastewater pollutant reduction efficiency. Electrocoagulation run on 1 liter of water in a batch system and using stainless steel electrodes. The water taken from Cihideung river with two different times which water stream in sunny and rainy conditions. The results showed that a color reduction of 11% at a voltage of 15 and 5-minute, turbidity of 17% at a voltage of 18 and 5-minute, TSS of 29% at a voltage of 12 and 5–minute, and phospate of 20% at a voltage of 12 and 30-minute could be achieved. With the water in rainy conditions a color reduction of 74% at a voltage of 18 and 60-minute, turbidity of 90% at a voltage of 9 and 60-minute, TSS of 94% at a voltage of 15 and 60-minute, and 70% of phosphate at a voltage of 12 and 25-minute could be achieved. Combination treatment of 9 volts and 5 minutes can be considered as the best condition of treatment.