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035 _a.b10147822
099 9 _aAIT Thesis no. EV-84-9
100 0 _aNaqibullah
245 1 0 _aCombined treatment of septage in waste stabilization pond
260 _aBangkok :
_bAsian Institute of Technology,
_c1984
300 _a64 p.
490 1 _aThesis ;
_vno. EV-84-9
500 _aA thesis 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, 1984
520 _aCombined treatment of septage and wastewater, was investigated in a series of pilot-scale waste stabilization ponds (WSP) , under ambient conditions. The system consisted of three ponds in series, a facultative pond followed by two aerobic ponds. Septage was fed manually to the facultative pond (pond 1) at 0%, 23, 10%, and 20% of wastewater volume. The pond performance in term of physical, chemical. and biological characteristics of the effluent was evaluated. The results of the experiment snowed that a mixing ratio of 10 part of septage with 90 part of wastewater. was optimum, corresponding to a 78.4% reduction in BOD and 99.9% removal of fecal coliforms The septage addition to the pond contributed nutrients to the pond water, resulting faster algal growth as was evidenced by chlorophyll-a concentrations . Septage was found. to exert a significant influence on the BOD-removal kinetics. An attempt was made to describe this effect in the form of a mathematical model. The developed mathematical model was verified using the data of the present study and the data reported by ARIFIN (1982) .The model showed a considerable agreement between the predicted and experimental value of the K with a correlation coefficient of O. 9596. This empirical. relationship can be used to design a single-cell pond receiving septage mixed with wastewater. A design example illustrating the model application is presented.
650 0 _aSewage lagoons
700 0 _aChongrak Polprasert,
_eChairperson
700 1 _aI, Fude,
_eExamination Committee
700 1 _aVigneswaran, Saravanamuthu,
_eExamination Committee
710 2 _aWorld He a lth organization (W.H.O.),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-84-9
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B20586
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