ROLE OF CHLORINE AND COPPER SULPHATE AS ALGICIDES IN THE COAGULATION OF WATER

Abstract

In India rivers are the major sources of water.. supply. Planktonic algae are the normal inhabitats of surface waters, Sometimes they grow so prolifically, that difficulties attributable to algal growths, constitute problems in water treatment plants. They interfere serious-ly during coagulation# flocculation, filtration and produce objectionable odours and tastes. (rice, the algal laden water has entered the treatment plant there is little that can be done to reduce the effect of algao, So, in the opera. tion and maintenance of water purification plants, biologi-cal control of water trupplies i • as important as the physical$ chemical and bacteriological control* For the control of algae in water intended for domestic and industrial uses, the two basic elgicides commonly recommended are Copper Sulphate and Chlorineo In conventional water} treatment, alum is generally used as a coagulant.