An Experimental Study on the Application of Electrolysis to Nightsoil Treatment Plant Effluent, as a Means of Advanced Treatment Techonology

전해처리법(電解處理法)에 의한 분뇨(糞尿) 2차 처리수(處理水)의 고도처리(高度處理)에 관한 연구(硏究)

The effluent from conventional nightsoil treatment plants contains nutrients, color and chlorides, in addition to residual organics and suspended solids, and thereby causes substantial pollution problems in receving water resources. In order to verify the usefullness of electrolysis in removing those residual pollutants from such conventional nightsoil treatment plant effluent, a bench scale experiment was conducted using sufficiently dilluted human nightsoil as experiment feeds. The result showed mean removals of 45% of total phosphorus and 85% of color, in addition 87% of residual BOD, 47% of residual COD and 85% of residual SS. The optimum electric current was found to be 15 ampere and the optimum hydraulic residence time 21/2 hour.