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008			th eng
035			_a.b11559172
099		9	_aAIT Thesis no.EV-96-32
100	0		_aSakonwan Chanphaka
245	1	0	_aAnaerobic acidogenesis of waste-activated sludge
260			_aBangkok : _bAsian Institute of Technology, _c1996
300			_a70 leaves + _e1 online resource
490	1		_aThesis ; _vno. EV-96-32
500			_aA thesis submitted in partial fulfillment of requirements for the degree of Master of Engineering
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1996
520			_aThe study of acidogenesis of waste activated sludge was carried out using 4-lab-scale complete mixing reactors in the batch operation. The objectives was to evaluate the performance of pretreatment by autoclave, the effects of sludge renewal ratio and batch operation time. The reactors were fed with autoclaved sludge at 20%, 30% and 40% renewal ratios and the control reactor was fed with raw sludge at 30% renewal ratio. The batch operations were carried out at 2-day, I-day and 0.5-day intervals. The results showed better degradation of autoclaved sludge and highest VF A production at 40% renewal ratio for each reaction time and 0.5-day reaction time for each renewal ratio. For each type of VFA produced, optimum acetic acid production was also found to be 40% renewal ratio at 0.5-day reaction time. Propionic acid production was found highest in 20% renewal for each reaction time and 2-day reaction time for each renewal ratio. But the production of isobutyric acid and butyric acid which were of minority could not be optimized because the concentrations produced did not differ much in each reactor.
650	1	0	_aSewage _xPurification _xActivated sludge process
700	1		_aYang, Byung-Soo, _eChairperson
700	0		_aSamorn Muttamara, _eExamination Committee
700	1		_aKamei, Tasuku, _eExamination committee
710	2		_aGovernment of The United Kingdom, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. EV-96-32
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B14803
907			_a.b11559172 _bmnait _cv
902			_a240329
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909			_aBarcode : 30050120600993 _bCREATED : 2014-03-14 _cRECORD # : i12771703 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160078712 _bCREATED : 2016-05-23 _cRECORD # : i12986033 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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