Performance evaluation of effluent treatment facilities of textile cluster : a case study of narol textile cluster , Ahmedabad , Gujarat

Abstract

The textile industry is one of the largest segments of Indian industry. It accounts for over 20 % of the value of industrial production and is closely linked with the agricultural and rural economy. This industry occupies a unique place in the national economy through contribution to industrial output, employment generation and foreign exchange earnings. It is the single largest employer in the industrial sector employing about 38 million people. The textile units use a number of dyes, chemicals and other materials to impart desired quality to the fabrics. These units generates a substantial quantity of effluents, the quality of which in most of the cases is unsuitable for further use and can cause environmental problems, if disposed of without proper treatment. Poorly treated wastewater with high levels of pollutants caused by poor design, operation or treatment systems creates major environmental problems when discharged to surface water or land. Considering the above stated implications an attempt has been made in the present project to evaluate the performance efficiency of ETPs for textile waste. Samples were collected from different points to assess the efficiency of each unit. Parameters analysed for evaluation of performance of ETPs are BOD, COD, TSS, TDS and NH3-N. All the industry’s influent having the range of BOD ( 268-812 mg/L ) and COD ( 1387 – 3213 mg/L) , and the removal efficiency maximum was observed in industry E which is BOD ( 85.14 %),COD (86.97 %),TSS (95.41 %),TDS (61.25 %),NH3-N (89.74 %). Most of the analysed parameter of all industry is above the discharged standard except ammonical Nitrogen. BOD and COD removal throughout treatment plants but final values above the discharged standard (BOD5 30 mg/L & COD 100 mg/L). This study also involves identification of problems and for that solution is also provided. Some recommendation suggestions are also provide to improve the performance of ETPs. The proposed CETP is best option available for textile industry which is located in Narol textile cluster.