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008 271098s1981 th r 000| eng d
035 _a.b10260122
099 9 _aAIT Thesis no.EV-81-13
100 1 _aHettiaratchi, Joseph Patrick Anthony
245 1 0 _aEvaluation of design parameters for deep-bed rapid sand filters
260 _aBangkok :
_bAsian Institute of Technology,
_c1981
300 _a61 leaves :
_bill.
490 1 _aThesis ;
_vno. EV-81-13
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, 1981
520 _aA process analysis method was developed for particle removal in deepened granular media filters, which would permit optimum filter design with a minimum of well designed pilot plant studies. Mathematical models purporting to describe the dependency of filter coefficient, on specific deposit a were examined, based on controlled filtration experiments. Using an experimental system of unisized medium grains with stabilized and destabilized suspensions, model parameters were evaluated for each sand size and filtration rate . Empirical relationships showing the dependency of model parameters on system variables were developed. Application of the proposed models in predicting the concentration and specific deposit profiles indicate that this method can permit prediction of filter performance, provided parametric dependence of model parameters is known.
650 0 _aSewage
_xPurification
_xRotating disc process
700 1 _aNguyen, Cong Thanh,
_eChairperson
700 1 _aLonani, B.N.,
_eCo-Chairperson
700 1 _aWatanabe, Y,
_eExamination Committee
710 2 _aCDG (Germany),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-81-13
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B21607
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