ASSESSMENT OF PHYSICO-CHEMICAL CHARACTERISTICS OF PAPER INDUSTRY EFFLUENTS

摘要

This paper presents the physico-chemical characteristics of effluent discharge from paper industry. The effluent from the paper industry is characterized by colour, extreme quantities of COD, BOD, pH, TDS, and SS .The samples were collected from the inlet and outlet of the effluent treatment plant of paper mill. The samples were analyzed and compared with the Indian standards of effluent discharge. The effluent before treatment contains pH of 8.2-8.3, Suspended Solids of 246-249 ppm, Total Dissolved Solids ranges from 2800-2850 ppm, BOD and COD varies 181-120 mg/l and 1195-981 mg/l respectively. After treatment pH varies 7.2-7.4, Suspended Solids 76-80 ppm, Total dissolved solids ranges from 1803-1830 ppm, BOD and COD ranges from 65-102 mg/l and 195-205 mg/l, respectively. Result shows that the pH and TDS is in the permissible limits and COD, BOD, SS does not meet the permissible standards after treatment. The paper mill does not meet the Standards set by Central Pollution Control Board, India