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008 011298s1985 th r 0000|00eng d
035 _a.b10058060
099 9 _aAIT Thesis no.EV-85-9
100 1 _aIllangovan, Patchamuthu
245 1 0 _aAerobic biological treatment by fluidized bed :
_ban experimental approach
260 _aBangkok :
_bAsian Institute of Technology,
_c1985
300 _a55 p.
490 1 _aThesis ;
_vno. EV-85-9
500 _aA thesis submitted in partial fulfillment of requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1985
520 _aAn aerobic tapered fluidized bed reactor was measured in terms of organic removal efficiency and dissolved oxygen concentration maintained in the reactor. The uniqueness about this process is the combined activity of suspended and attached growth microorganisms in organic removal. Attached growth microorganism were predominant in the fludized sand media while suspended growth microorganisms were dominant in the portion above the expanded bed in the reactor. The study show moderate organic carbon removal efficiency (45-50%) at low concentration dissolved oxygen 9.9-10.2 mg/l and low detention time of 1.8-2.3 min. It can be deduced from the study that the organic carbon removal efficiency is dependent upon the influent dissolved oxygen concentration.
650 0 _aSewage
_xPurification
_xBiological treatment
650 0 _aFluidized reactors
700 1 _aNguyen, Cong Thanh,
_eChairperson
700 1 _aVigneswaran, Saravanamuthu,
_eCo-Chairperson
700 0 _aSamorn Muttamara,
_eExamination Committee
710 2 _aNorwegian Agency for Development (NORAD),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-85-9
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B20008
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