02563cas a2200253 i 450000500170000000800410001703500150005810000240007324500530009726000520015030000240020249000270022650001060025350200580035952015210041765000390193870000320197770000450200970000430205470000420209771000450213981000590218485600660224320260819090440.0170399s1992    th  u m rtt   0|  a1eng d  a.b107714510 aBowornsak Wanichkul10aWater quality analysis for a basin-wide planning  aBangkok :bAsian Institute of Technology,c1992  a87, A17, B7, C19 p.1 aThesis ;vno. EV-92-14  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering  aThesis (M.Eng.) - Asian Institute of Technology, 1992  aChao Phraya River and Bangkok Basin are the study areas of  this research. Presently, Chao Phraya River does not meet the water  quality standard, especially in the Bangkok region. The water  quality analysis method was investigated in this research in order  to make a plan of the basin-wide sewerage system to meet the water  quality standard.  In the water quality analysis, a steady state one-dimensional  model was applied to the Basin-wide Sewerage Planning. DO and BOD  were used as the analytical  different method was applied  parameters in the model. The finite  to the model by dividing the river  into a finite number of segments . The coefficient considered in  this research were: dispersion coefficient referring to the Elder's  equation, reaeration rate referring to the O'Connor and Dobbins's  equation and deoxygenation rate deriving from the calibrated result  of measured DO and BOD concentration in the river.  Chao Phraya River in Bangkok region is divided into 33  segments in this model. The results from the model were applied to  planning of the sewerage system on the assumption that the study  area was divided into 7 zones. By considering the river flow rate  of 100 cu.m./sec, t h e pre dicted quality of the river in year 2000  will not meet the water quality standard of ·chao Phraya River. As  a result, the minimum percent removal of organic pollutants by the  sewerage system which should be served in this area are 84%, in  order to comply with the water quality water standard .10aWaterxChao Phraya RiverxAnalysis1 aTanaka, Shuzo,eChairperson0 aSamorn Muttamara,eExamination Committee1 aSchroder, Hans,eExamination committee1 aFujii, Shigeo,eExamination committee2 aGovernment of Japan,eScholarship donor 2 aAsian Institute of Technology.tThesis ;vno. EV-92-14  3Full-Textu http://203.159.5.9/ait-thesis/detail.php?q=B16646