PHYSICO-CHEMICAL ANALYSIS OF SOME INDUSTRIAL EFFLUENTS FROM VAPI INDUSTRIAL AREA, GUJARAT, INDIA

Physicochemical characteristics of some industrial effluents collected from various industries in and around Vapi Industrial Area. Industrial effluents were studied for five months intervals during Sep 2008-Jan 2009, however in this paper data is presented for the month of Jan 2009. In all 17 parameters were studied. These includes Colour, temperature, pH, electrical conductivity, TDS, TSS, BOD, COD, Chloride, sulphate, Nitrate, Phosphate, Calcium, Magnesium, Sodium and Potassium ions. The pollution levels from these industries were found to be very high and alarming and hence proper care must be taken for the treatment of these effluents before they are released to the sewage. Many big industries have their own effluent treatment plants, but small scale industries are not following the guidelines prescribed for the industrial effluents. The study has shown that almost all the parameters are on the higher levels than the prescribed limit and hence proper treatment methods are needed.