000 03390nas|a2200433 i 4500
005 20260818112723.0
008 041199s1999 th uu m rtt 00| a1eng d
035 _a.b11765215
099 9 _aAIT Thesis no.EV-99-30
100 0 _aTiev Visoth
245 1 0 _aEvaluation of environmental capacity of Tonle-sap basin for use as raw water supply for Phnom Penh city, Cambodia
260 _aBangkok :
_bAsian Institute of Technology,
_c1999
300 _a112 leaves
490 1 _aThesis ;vno. EV-99-30
500 _aA thesis proposal submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development
502 _aThesis (M.Sc.) - Asian Institute of Technology, 1999
520 _aThe Tonle Sap River Basin plays a key role in supplying as raw water to Phnom Penh City, Cambodia. The purposes of this study were: to evaluate water quality characteristics in the Tonle Sap water basin, identify problems of water supply quality and conduct experiments on water hyacinth pond (WHP) systems to improve quality of raw water from the Tonle Sap river. Various aspects of water quality were studied at four locations of the main path of the Tonie Sap River. Raw water, treated water and distributed water from households from four districts were analyzed. Experiments on WHPs were conducted to investigate the treatment efficiencies by changing HRT and varying the percentage of plant harvesting. The results showed that quality of the Tonie Sap water, treated water and distributed water fluctuated with time and exceeded recommended WHO and MRC raw water and drinking water quality standards. For example, the TSS concentrations of raw water from Tonle Sap river were 80-600 mg/L, exceeding TSS the MRC raw water quality standard of 25 mg/L. The WHP experiments found the optimum conditions of WHP to be: HRT of 3 days, plant harvesting at 50% of the pond surface area; the k value was 30.7 m/yr. The use of WHPs to pre-treat the raw water supply could improve the raw water quality to meet the raw water quality standards.
650 0 _aWater quality
_zCambodia
_zPhnom Penh
700 0 _aChongrak Polprasert,
_eChairperson
700 1 _aHa, Sung Ryong,
_eCo-Chairperson
700 0 _aPreeda Pakpian,
_eExamination Committee
700 1 _aTrankler, Josef,
_eExamination Committee
710 2 _aSwedish International Development Agency (SIDA),
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-99-30
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B12096
907 _a.b11765215
_bmnait
_cy
902 _a240420
998 _b0
_c991104
_dm
_ea
_fy
_g0
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c22
942 _c40
942 _c20
909 _aBarcode : 30050120654776
_bCREATED : 2014-03-20
_cRECORD # : i12775216
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050160077441
_bCREATED : 2016-05-23
_cRECORD # : i12988315
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050121074487
_bCREATED : 2023-03-23
_cRECORD # : i13440238
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c40947
_d40947