Electrocoagulation for Treatment of Parboiled Rice Waste Water

Abstract

Rice is the staple food for 65% of the population in India. It is the largest consumed food grain in India. Our country is the second largest producer of rice in the world next to China. Rice needs to be process before human consumptions. The parboiled rice milling processes generates wastewaters which gives high BOD and COD it needs treatment before discharged into any water body. There are number of parboiled rice milling industries in Jharkhand which generates large amount of waste water. Such waste water discharged into nearby water body without any treatment. Presently very few parboiled rice mills have effluent treatment plant and the biological treatment method is being used to treat the wastewater. To overcome these problems electrocoagulation process has been adopted as an alternate stand alone treatment to reduce the area requirement and required time. The materials which are used for preparation of lab model were aluminium plate, wire, battery, rheostat, magnetic stirrer and multimeter.

Removal of Chemical Oxygen Demand, Total Solids, Total Suspended Solids, Total Dissolved Solids, Total Volatile Solids and Total Fixed Solids has been considered in the present study. The process variables are pH, time and current.