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035 _a.b1066418x
099 9 _aAIT Thesis no.EV-86-4
100 0 _aNguyen Trong Quang
245 1 0 _aTapioca starch wastewater treatment by aerobic fluidized bed process
260 _aBangkok :
_bAsian Institute of Technology,
_c1986
300 _a74 p.
490 1 _aThesis ;
_vno. EV-86-4
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, 1986
520 _aAn aerobic tapered fluidized bed reactor was operated to study its performance at variable organic loading rates.It was to be measured in terms of organic removal efficiency and dissolved oxygen concentrations maintained in the reactor. The uniqueness of this process is the combined activity of suspended and attached growth microorganlsms ln or anic removal. Attached lcroorganisms were pre omlnan ln the fluidized sand media while suspended microorganisms were dominant in the volume above the expanded bed in the reactor. The investigation shows the moderate organic carbon removal efficiency (55-65 %) at medium dissolved pure oxygen of 16.9-18.6 mg/l and low detention time of 6 hours. It is deduced from the study, that the removal efficiency is dependent upon the initial waste strength, the influent dissolved oxygen and the reator sizes.
650 1 0 _aSewage
_xPurification
_xBiological treatment
650 1 0 _aFactory and trade waste
700 0 _aSamorn Muttamara,
_eChairperson
700 0 _aChongrak Polprasert,
_eExamination Committee
700 1 _aShin, Hang-Sik,
_eExamination Committee
710 2 _aThe Government of France,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-86-4
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B19626
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