000			02973nam a2200397 4500
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008			011298s1998 th r 0000|0 eng d
035			_a.b11734115
099		9	_aAIT Thesis no.EV-98-26
100	0		_aSopin Paethong
245	1	0	_aApplication of a filter press to a sludge dewatering process in the Bangkhen water treatment plant
260			_aBangkok : _bAsian Institute of Technology, _c1998
300			_a93 leaves
490	1		_aThesis ; _vno. EV-98-26
500			_aA research study submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development
502			_aThesis (M.Sc.) - Asian Institute of Technology, 1998
520			_aThis research study emphasized mechanical dewatering characteristics and attempted to investigate the use of filter press in Bangken Water Treatment Plant because it was anticipated that in the not-too-distant future the filter press would be considered. Although previous systems are generally not economically feasible for most treatment plants, improvements in technology and adjustments in materials and system costs may make them more attractive in the future. The specific resistance of the conditioned sludge and CST are determined. They are found that the addition of optimum dosage of chemicals improve the filterability of sludge to a high degree, in which the specific resistance of the sludge is decrease from an average of 6.53E+ 11 m/kg to7.48E+10 m/kg. The figure revealed the optimum dosage of Ze Tag 63, anionic polymer to be 0.08% DS sludge. A comparison between combination of chemical conditioners to apply in filter pressing operation indicate that by using anionic polymer with lime in place of cationic would fall in CST value of 10.7 s, however, the cost of lime and anionic polymer might be higher than that of cationic polymer for the same degree of conditioning.
650		0	_aWater _xPurification _xFiltration
650		0	_aSewage sludge _xDrying
700	1		_aTakizawa, S., _eChairperson
700	1		_aVisvanathan, C., _eExamination Committee
700	0		_aSamorn Muttamara, _eExamination Committee
710	2		_aMetropolitan Waterworks Authority (MWA), _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. EV-98-26
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B12746
907			_a.b11734115 _bmnait _cy
902			_a240407
998			_b0 _c981201 _dm _ea _fy _g0
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