24-10-2014, 02:48 PM
Abstracts: Textile industry is one of the most important and rapidly developing industrial sectors in Jetpur. It has a high importance in terms of its environmental impact, since it consumes considerably high amounts of processed water and produces polluted discharge water in large amounts. Textile mills in Jetpur are required to control their discharge and therefore have a CETP ( common effluent treatment plant). The CETP of Jetpur was investigated in this project. Performance of the treatment plant was evaluated by site visit and analysis of influent and effluent samples. For the treatment of textile industry wastewater, biological treatment, chemical treatment and physical treatment are used. Plants utilising biological treatment is due to less excess sewage production, lower operational cost and better COD removal in biological treatment. Waste water parameters in the effluent of biological treatment plants were in compliance with the GPCB discharge standards. However, if sodium sulphate in dying process and sulphuric acid in neutralization processes are used before abiological treatment, sulphate in the effluent exceeds 1700 mg/l. This problem can be avoided by using HCl or CO2 ratherthan H2SO4 in neutralization and NaCl instead of Na2SO4, if the use of Na2SO4 is not necessary.