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008 021098s1980 th r 0000|0 eng d
035 _a.b10359400
099 9 _aAIT Thesis no. EV-80-8
100 1 _aKeliat, Nalsali
245 1 0 _aInfluence of mixing intensity of flocculation
260 _aBangkok :
_bAsian Institute of Technology,
_c1980
300 _avii, 94 p.
490 1 _aThesis ;
_vno. EV-80-8
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, 1980
520 _aMicro-floe adsorption equation was used to investigate the influence of mixing intensity on the reduction of the micro-floes in flocculation. By varying the raw water turbidity, paddle position, area and rotation rate, the basic equation for micro-floe adsorption is acceptable, and the best results of effective mean rate of turbulent energy dissipation is given by 0 = -0.5. Artificial raw water was used in this research by adding kaolinite clay to the tap water, and alum was used as coagulant. The validity of micro-floe adsorption equation was compared to Contact Flocculation equation and Camp's equation, k = 0.4 is used in Camp's equation, because the experimental unit was used without stator. The value of effective energy dissipation is found to be 0.1 to 0.12 of the total energy dissipation. The prediction of floe volume at ultimate floe size distribution is also presented. The best G-values for these experiments are in the range 36 to 46 s-1, compared to recommended value in the range 5 yo 100 s-1
650 0 _aFlocculation
700 1 _aWatanabe, Yoshimasa,
_eChairperson
700 1 _aNguyen, Cong Thanh,
_eCo-Chairperson
700 0 _aSamorn Muttamara,
_eExamination Committee
710 2 _aUnited States Agency for International Development/ Regional Economic Development (USAID/RED),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-80-8
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B21964
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