000			03442nas|a2200385 i 4500
005			20260817173156.0
008			041112s2004 th uzm rtt 00| a1eng d
035			_a.b11947548
099		9	_aAIT Thesis no.EV-04-24
100	0		_aWilasinee Yoochatchaval
245	1	0	_aCombined Sharon and anammox processes for wastewater nitrogen removal
260			_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2004
300			_a70 leaves : _bill.
490	1		_aThesis ; _vno. EV-04-24
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502			_aThesis (M.Eng.) - Asian Institute of Technology, 2004
520			_aThis study was conducted to investigate the feasibility of using combined Sharon (Single reactor system for High Ammonium nitrogen Removal Over Nitrite) and Anammox(ANaerobic AMmonium OXidation) process for wastewater nitrogen removal. The main objective is to study the nitrogen removal at various operating parameter such as loading rate, oxygen feed ratio and HRT. The experiment used silicone hollow fiber membrane module for supply of oxygen gas because it has the biggest gas permeability besides its exellent heat-resisance, toughness, resilience and long-life. In the experiment, five-liter reactor and silicone hollow fiber membrane module were operated. Synthetic wastewater was fed continuously for 4-5 months with the variation of {u2022} Ammonium nitrogen concentration; 50mg/L, 60mg/L, 70 mg/L,80 mg/L and90 mg/L {u2022} Oxygen feed ratio, 1:14, 1:19, 1:9, 1:6, 1:11and1:3.8 {u2022} HRT, 1 day and 2 days The controlled parameters in this experiment were pH, alkalinity and dissolved oxygen concentration. pH and alkalinity were controlled by adding bicarbonate contents. Alkalinity concentration in this experiment depended on the concentration of ammonium nitrogen. Dissolved oxygen concentration could be controlled by oxygen flow rate that was pumped to the hollow fiber membrane module, wastewater circulation flow rate and oxygen feed ratio. Dissolved oxygen concentration was kept at 0.5-1.0 mg/L. It was found that at the optimum ammonium nitrogen loading rate is 60-70 mg/L·d and the oxygen feed ratio should be 1:11. The suitable HRT is 1 day. The maximun nitrogen removal is 63.85% because the nitrification process was occurred in silicone hollow fiber membrane module reator.
650		0	_aSewage _xPurification _xNitrogen removal
700	1		_aAnnachhatre, Ajit P., _eChairperson
700	0		_aPreeda Pakpian, _eExamination Committee
700	1		_aSatoh, Hiroyasu, _eExamination Committee
710	2		_aRoyal Thai Government Fellowship, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. EV-04-24
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B08952
907			_a.b11947548 _bmnait _cu
902			_a240423
998			_b0 _c041112 _dm _ea _fu _g0
945			_lmnait
945			_lmnarc
942			_c22
942			_c40
909			_aBarcode : 30050120706261 _bCREATED : 2014-04-02 _cRECORD # : i12755527 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160050844 _bCREATED : 2016-05-25 _cRECORD # : i12991028 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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