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008 170399s1991 th uzm rtt 00| a1eng d
035 _a.b10055538
099 9 _aAIT Thesis no. EV-91-14
100 1 _aOkui, Hiroyuki
245 1 0 _aAdvanced primary treatment of a domestic wastewater with polymer technology
260 _aBangkok :
_bAsian Institute of Technology,
_c1991
300 _a86 p.
490 1 _aThesis ;
_vno. EV-91-14
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, 1991
520 _aChemically enhanced primary treatment using ferric chloride in conjunction with cationic polymer (CAT-FLOC-CL) and anionic polymer (R-300) was tested for the treatment of AIT wastewater based on pilot-plant experiments. The appropriate dosages (ferric chloride = 40 mg/l, CAT-FLOC CL = 10 mg/l, R-300 = 1 mg/l) was determined by jar tests, considering the effect of each chemical on the charge neutralization. In pilot-plant experiments, maximum removal efficiencies of 71%, 57%, 65%, 78% for total COD, soluble COD, SS and total phosphate, respectively, were observed for the AIT wastewater. However, these removal efficiencies were affected by flowrate and influent characteristics. The dewater-ability of sludge produced was examined by the measurement of sludge resistance and capillary suction time. The better dewater-ability was obtainable by the chemical addition when compared to the conventional primary sludge.
650 0 _aSewage
_xPurification
650 0 _aPolymers and polymerization
700 0 _aChongrak Polprasert,
_eChairperson
700 1 _aMino, Takashi,
_eExamination Committee
700 1 _aZhuang, Ya-Hui,
_eExamination Committee
710 2 _aTokyu Co nstruct ion Company Ltd.,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-91-14
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B17404
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