Implementation of Chemical Precipitation, Bio-ozidation and Membrane System in Teztile Industry – A Case Study
The paper presents a case study of textile dyeing industry on implementation of full-scale effluent treatment plant (ETP). The industry in compliance with the protection of the surface water source implemented chemical precipitation, bio-oxidation followed by membrane system for resource recovery in terms of renovated water and raw material (sodium chloride) for process reuse. The dye bath effluent and wash water generated are combined together and treated through chemical precipitation, activated sludge process, media filtration and activated carbon adsorption for removal of major pollutants. The removal in terms of suspended solid (SS), biochemical oxygen demand (BOD) and chemical oxygen demand (COD) are in the range 80-84, 86-90 and 80-86%, respectively. The tertiary treated effluent after microfiltration followed by advanced treatment comprising ultrafiltration and two stage reverse osmosis system achieve a permeate recovery of 84-90% and recycled for process use. The 10-14% rejects from the reverse osmosis system is routed through nanofiltration for recovery of sodium chloride (brine solution) and reuse in process for dye bath preparation. The final rejects 5-7% is dried through solar evaporation, and are packed in polythene bags and transported for final disposal in TSDF. The capital and O&M costs of treatment are in the range Indian Rupee (INR) 0.44-0.50 Lakhs and 70- 80 Rs. per m3 of design flow, respectively (1USA$=INR 49.0650).
Teztile industry Dyeing Chemical precipitation Bio-ozidation Ultra-filtration Reverse osmosis Nano Filtration Resource Recovery Recycle/Reuse Rejects Costs
Pravin MANEKAR M.KARTHIK Tapas NANDY
National Environmental Engineering Research Institute (Council of Scientific & Industrial Research),Nehru Marg,Nagpur-440 020,India
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
1209-1214
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）