洗車場 廢水의 二段 電解處理

Abstract

Car washing wastewater which contains nonbiodegradable pollutants such as surfactants, waxes, lubricants and antifreeze which results pollution on water environment. The number of Car washing shop in Korea reach almost 14,000 places and the most part of them have small scale. Therefore there have been some problems in treating Car washing wastewater by biological methods.

This study was conducted to treat Car washing wastewater by two steps electrolytic process using dimensionally stable anode(titanium coated with IrO₂) and stainless cathode(H-C metal). First step is electro-coagulation process packed bi-polar media between main electrode. Second step is electro-oxidation process to degrade remain soluble organic matters.

The optimum electrolytic conditions such as current density, electrode clearance, conductivity, pH and reaction time etc. were studied in this paper. And the capacity of each step and economic comparativeness with traditional methods were determined. Through this study, it is confirmed that two steps electrolytic process is an effective method to treat Car washing wastewater in Korea.