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035			_a.b11817057
099		9	_aAIT Thesis no.EV-00-8
100	0		_aLaksanapreecha Krutkuntode
245	1	0	_aEmergency control of odor in a latex industry
260			_aBangkok : _bAsian Institute of Technology, _c2000
300			_a97 leaves
490	1		_aThesis ; _vno. EV-00-8
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering
502			_aThesis (M.Eng.) - Asian Institute of Technology, 2000
520			_aFactory A is a concentrated latex processing industry with the average field latex production of 56 tons/day and consumes water of average 0.5 m3/ton field latex. As the results of high organic of rubber composition and chemical use in processing, pollutant load in wastewater is very high. 658.46 kg BOD/d, 1108.75 kg COD/d, 86.19 kg N/d, 5.36 kg P /d, and 44.60 kg SS/d were generated from concentrated latex and skim rubber block processing. This high pollutant loading entered the existing effluent treatment system which comprised of anaerobic ponds, aerobic pond, and facultative pond in series. The efficiency of the system was 99.78% BOD and 98.58% COD removal. However, anaerobic condition generated odor problem in anaerobic pond. That was unacceptable by community and leaded to protest. Ammonia use in processing also attributed to atmospheric pollution in workplace. Modification was urgently needed, and it was done by operating only aerobicfacultative at the existing system and providing some modification. After operating for a while, in one hand, odor problem can be attenuated into the satisfied level, in the other hand, the quality of effluent was receded. The effluent from modified system contained BOD 43 mg/L and COD 203 mg/L that was not satisfied the standard. The efficiency of overall system decreased to 98.27 and 96.94% removal of BOD and COD. In order to meet the highest reduction in all problems, waste minimization was introduced as the most effective solution. Changing behavior in housekeeping can reduce water usage. Secondary preservative should be applied to reduce ammonia concentration in latex that can couple with reduction of ammonia vapor in atmosphere.
650		0	_aLatex
650		0	_aSewage _xPurification
700	0		_aSamorn Muttamara, _eChairperson
700	1		_aNguyen, Cong Thanh, _eExamination Committee
700	0		_aSompol Boonthanon, _eExamination committee
710	2		_aAIT, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. EV-00-8
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B06904
907			_a.b11817057 _bmnait _cu
902			_a240401
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909			_aBarcode : 30050120654321 _bCREATED : 1999-06-07 _cRECORD # : i12229337 _dLPATRON : 1011931 _eLCHKIN : 2005-04-18 _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 6 _jTOT RENEW : 9
909			_aBarcode : 30050160077284 _bCREATED : 2016-05-24 _cRECORD # : i12989204 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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