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008 011298s1986 th r 000| 0eng d
035 _a.b10367615
099 9 _aAIT Thesis no.EV-86-14
100 1 _aSeo, G. T.
245 1 0 _aInteractions between dispersed growth and attached growth in activated sludge reactor
260 _aBangkok :
_bAsian Institute of Technology,
_c1986
300 _a104 p.
490 1 _aThesis ;
_vno. EV-86-14
500 _aA research study 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, 1986
520 _aLaboratory scale experiments were conducted to investigate the interactions between the attached and dispersed growth microbial behaviors in activated sludge reactors with sludge recycle. At a 10 d SRT, the performance of the attached growth activated sludge process(AGASP) with various amounts of contact media, such as 5%, 10%, and 20% of reactor volume, was investigated by comparing its effectiveness to the conventional one at various organic loadings of 0.81, 1.44, 2.01, and 3.18 kgCOD/m3. d. AGASP showed more effectiveness than the conventional unit (at 99% of significance level by the t-test). Oxygenation parameters, a & b in AGASP, were also obtained in the range of 0.3-0.5 for a and 0.004-0.054 for b, respectively. The kinetic coefficients k , K., Y, and Kd. for AGASP were found using the LAWRENCE and McCARTY's models and appeared to be in the range of 1-2 d-1, 20-50 mg/l, 0.4-0.8, and 0.14-0.22 d-1, respectively. Computer simulation of the performance of AGASP was also {u2022} conducted using system dynamics simulation model(Attached-Dispersed growth Microbial Interaction Model, ADMIM). Even though this model showed simple results with a little sensitivity, better simulation of the performance of AGASP can be expected by considering other important parameters of the system.
650 0 _aSewage
_xPurification
_xActivated sludge process
700 0 _aChongrak Polprasert,
_eChairperson
700 0 _aSamorn Muttamara,
_eExamination Committee
700 1 _aShin, Hang Sik,
_eExamination Committee
710 2 _aGovernment of Japan,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-86-14
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B19639
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