Abstract
Textile manufacturing sector is the strongest root of the economy of Bangladesh while pollution by inappropriate management of waste water from textile dyeing industries is one of the major environmental problems. Textile processing employs an assortment of chemicals, contingent upon the idea of the crude materials and items. Environmental problems caused by the the textile industry are mainly the discharges of waste water. The wellspring of waste water contamination are the wet handling steps which incorporate measuring, desizing, scouring, bleaching, mercerizing, coloring, printing etc. The present study was aimed at physico-chemical evaluation of waste water discharged by some garments industries. While in some waste water high pH values have been recorded, the pH values of the waste water before and after treatments were found in between the standard range. The Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Dissolved Solid (TDS) and Total Suspended Solid (TSS) values for waste water before treatment were found to be much higher than the permissible limits. For some industries the BOD, COD, TDS and TSS values of the outlet water from effluent treatment plant (ETP) were also found beyond the standard limits.
Highlights
Textile manufacturing sector of Bangladesh is the biggest earner of foreign currency and contributes significantly to the GDP of Bangladesh[1]
The quality parameters of waste water discharged from textile manufacturing industries in the Gazipur, Savar and Narayanganj area and standard values for Bangladesh according to the environment conservation rules30, 1997 are given in table 1
Sedimentation of some suspended solids during a long period of time at the bottom of a water body can impair lakes and other water bodies and increase flooding risks. In this investigation the BOD5, Chemical Oxygen Demand (COD), Total Dissolved Solid (TDS) and Total Suspended Solid (TSS) values for waste water before treatment were found much higher than the permissible limits for all the six garments industries
Summary
Textile manufacturing sector of Bangladesh is the biggest earner of foreign currency and contributes significantly to the GDP of Bangladesh[1]. With the rapid development of textile dyeing industry it has become the biggest sector in Bangladesh where large streams of waste effluents are produced. Textile manufacturing is a very complex and lengthy.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
