Pollution Research Paper

A STDUY ON DISPOSAL AND TREATMENT OF TANNERY WASTE FROM LEATHER INDUSTRIES BY COMMON EFFLUENT TREATMENT PLANT AT RANIPET, TAMILNADU, INDIA

N. SRIDHAR, J.S. SENTHIL KUMAAR AND M.R. SUBBARAYAN

Abstract

The present study aims in comparing the pollution limits followed in different countries and also studying the methods of treatment process and tannery waste water quality test followed by Common Effluent Treatment Plant at Ranipet, Tamil Nadu.The standards of Pollution limits for discharge of effluents into water bodies and sewers were compared between developing countries. It has been observed that India, Argentina, Sri Lanka, Bangladesh are lenient towards traditional small scale tanneries and no strict enforcement in maintaining quality standards in surface water is done as compared to South Africa. Tannery waste water quality test procedures followed in Common Effluent Treatment Plant (CETP) were studied and tests were conducted on samples collected in Palar River (Near Outfall) during the study period. It has been observed from the Effluent analysis results, that pH value and temperature of the samples are higher during summer season, since the dilutions of the samples are at low level, (i.e. River water not flowing). Suspended Solids, settleable solids, BOD, COD, Chromium content, sulphates, sulphides shows an increase in level of quantities during summer season. This increase in levels is due to dilution factor, which is less during summer season. (i.e. River water not flowing).