000			04153cas|a2200421 i 4500
005			20260818174101.0
008			050499s1994 th uzm rtt 00| a1eng d
035			_a.b10524472
099		9	_aAIT Thesis no. EV-94-23
100	1		_aRahman, Abdur
245	1	0	_aPriorities in water pollution control requirements for industries in Pakistan
260			_aBangkok : _bAsian Institute of Technology, _c1994
300			_a97 leaves
490	1		_aThesis ; _vno. EV-94-23
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Engineering and Technology
502			_aThesis (M.Sc.) - Asian Institute of Technology, 1994
520			_aThis study envisaged assessment of the total number of industries, total wastewater discharge, BOD load and the toxicity of industrial wastewaters in Pakistan. The industrial sector has been found to be a major contributor of water pollution with BOD, heavy metals and toxic compounds. Only 30 industries have had some kind of water pollution control equipment, but most of them are working at very low levels of treatment. For the effective utilization of scarce resources and to apply a systematic approach for water pollution control, the existing industries have been prioritized. Major priority industries identified are textiles and chemicals among the medium to large scale industries, while tanneries and electroplating are from small scale industries. Large quantities of water are used during textile dyeing and bleaching operations leading to almost equal amount of wastewater generation. While electroplating industry have been found to be discharging highly toxic and hazardous wastewaters into the sewer system without any treatment. The water consumption earl be reduced through in-plant modifications such as water consumption monitoring, controlling the leakage and spillage, optimizing the use of chemicals and using specially designed washers and rinsing equipment and replacing old machinery and equipment with the new ones. To encourage the la_rge and medium scale industries to control the water pollution, economic incentives like tax rebates, subsidies and soft loans should be provided. Combined/central treatment plants should be constructed for small scale industries. In the present circumstances they should have pretreatment at factory site before discharging into the sewer system. The estimated costs for the treatment of textile and electroplating wastewaters are US$ 0. 55 and 1. 27 per m3 respectively. The legislative structure has been found to be insufficient for industrial water pollution control and needs not only revision of existing laws but also inclusion of few more laws and regulations to improve the situation. The enforcement agencies need to be strengthed in terms of trained manpower, equipment and legislative support for effective pollution control.
650		0	_aSewage _xPurification
650		0	_aIndustry _xEnvironmental aspects
700	1		_aStoll, -Ing. Uwe, _eChairperson
700	1		_aUmita, Teruyuki, _eExamination Committee
700	1		_aLee, Seong-Key, _eExamination Committee
710	2		_aThe Government of Japan, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. EV-94-23
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B15787
907			_a.b10524472 _bmnait _cx
902			_a240404
998			_b2 _c951012 _dm _ea _fx _g0
945			_lmnait
945			_lmnait
945			_lmnarc
942			_c20
942			_c40
909			_aBarcode : 30050003047908 _bCREATED : 1994-05-18 _cRECORD # : i10658191 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050003461455 _bCREATED : 1994-05-18 _cRECORD # : i10658208 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160055371 _bCREATED : 2016-11-05 _cRECORD # : i12975539 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
999			_c92003 _d92003