03310cas|a2200409 i 4500 20260819084530.0 170399s1991 th uzm rtt 00| a1eng d .b10729446 AIT Thesis no. EV-91-20 Chen, Ann-cheng Thermophilic treatment of high strength wastewater by modified Upflow Anaerobic Sludge Blanket reactor (U.A.S.B.) Bangkok : Asian Institute of Technology, 1991 70 p. Thesis ; no. EV-91-20 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1991 This study was aimed to cultivate thermophilic organisms which can perform optimally at 55°c, and to utilize their increased reaction rate at increased temperature. A semi-pilot modified U.A.S.B. reactor were operated at different organic loading of 2 to 24 Kg COD/m3.day corresponding to H.R.T.:12o hr to 10 hr and using distillery wastewater as feed substrate which was inherently at high temperature. Investigations on gas production rate, biogas composition, COD balance, sulfur balance, microbial and physico-chemical mechanism of granular sludge formation were made. It was determined that organic loading up to 24 Kg COD/m3.day could be handled with satisfactory efficiency. High methane production rate was linearly increasing correspondingly with increasing organic loading. Higher organic loading was still imposed continuously, that is, maximum organic loading was not obtained yet. It was found that limiting step of thermophilic U.A.S.B. reactor was propionate degradation. The interspecies hydrogen transfer in the system was very important factor for process performance. Based on COD balance, 68% of removal COD was converted to methane gas. Also it was found that sulfate reducing bacteria can not compete with methanogenic bacteria in the system. Both Methanosarcina-like and Methanothrix-like methanogens were coexisting in granular sludge. Sewage Purification Activated sludge process Harada, Hideki, Chairperson Tran, Francis T., Examination Committee Verink, Johan, Examination Committee Chinese Taipei Government, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-91-20 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17411 .b10729446 mnait x 240402 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003046215 CREATED : 1992-12-20 RECORD # : i10935915 LPATRON : 1024101 LCHKIN : 2013-11-09 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 3 TOT RENEW : 3 Barcode : 30050003046223 CREATED : 1992-12-20 RECORD # : i10935927 LPATRON : 1020380 LCHKIN : 2008-01-24 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 4 TOT RENEW : 2 Barcode : 30050160056395 CREATED : 2016-11-05 RECORD # : i12974481 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 120606 120606 0 0 0 0 MAIN MAIN mnait 2026-08-19 0 AIT Thesis no. EV-91-20 30050003046215 2026-08-19 08:45:30 1 2026-08-19 20 0 0 0 0 MAIN MAIN mnait 2026-08-19 0 AIT Thesis no. EV-91-20 30050003046223 2026-08-19 08:45:30 2 2026-08-19 20 0 0 0 0 MAIN MAIN mnarc 2026-08-19 0 AIT Thesis no. EV-91-20 30050160056395 2026-08-19 08:45:30 2026-08-19 40