000 03566nam a2200409 a 4500
005 20260817162955.0
008
035 _a.b11454933
099 9 _aAIT Thesis no. EV-95-28
100 1 _aAlvear, Oliver Vilar
245 1 0 _aApplication of the integrated biomass model for natural wastewater treatment systems
260 _aBangkok :
_bAsian Institute of Technology,
_c1995
300 _a128 leaves :
_bill.
490 1 _aThesis ;
_vno. EV-95-28
502 _aThesis (M. Eng.) - Asian Institute of Technology, 1995
500 _aA thesis submitted m partial fulfilment of the requirements for the degree of Master of Engineering.
520 _aThe study evaluated the applicability of the integrated biomass model of Polprasert and Agarwalla (1994) to water hyacinth pond (WHP) and waste stabilization pond ( WSP) systems. The hydraulic characteristic of the ponds was determined by tracer and dye studies. The dispersion numbers of WHP and WSP operated at hydraulic retention time (HRT) of 5 days were 0.01 7 and 0.016 respectively, and photographs from the dye study showed no apparent vertical mixing which supported the tracer study results. Batch kinetic experiments were performed to determine the first-order rate coefficients of suspended and attached biomass from the pilot-scale WHP and WSP units. The overall first-order rate coefficients of the pilot-scale units based on COD removal performance were computed using the integrated biomass and plug-flow equations. The values of overall effective rate coefficients computed from specific biomass activities were greater than the overall rate coefficient derived from pond performance . The integrated biomass equation was modified incorporating the additional COD introduced into the reactors from decaying organic matter (e.g. plants and detritus) for use with the simplified biomass-specific overall effective rate coefficient equation. The modified equations w~re validated using first-stage full-scale and pilot-scale WHP and WSP data conducted in AIT. The median effluent COD concentrations for both units were predicted better than the unmodified integrated biomass and plug flow equations. Simplified charts for the design and operation of WHP systems were prepared and demonstrated the significant influence of pond depth on reactor sizing.
650 1 0 _aSewage
_xPurification
_xBiological treatment
700 0 _aChongrak Polprasert,
_eChairperson
700 1 _aUmita, Teruyuki,
_eExamination committee
700 1 _aHansen, Ian Sehested,
_eExamination committee
710 2 _aGovernment of Japan,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-95-28
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B15137
907 _a.b11454933
_bmnait
_cv
902 _a240404
998 _b0
_c960201
_dm
_ea
_fv
_g0
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c20
942 _c40
909 _aBarcode : 30050003353017
_bCREATED : 1994-04-09
_cRECORD # : i11715212
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050003353025
_bCREATED : 1994-04-09
_cRECORD # : i11715224
_dLPATRON : 1017687
_eLCHKIN : 2005-04-18
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 7
_jTOT RENEW : 7
909 _aBarcode : 30050160079173
_bCREATED : 2016-05-23
_cRECORD # : i12985387
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c6887
_d6887