03425nam a2200409 4500 20260817162231.0 011298s1987 th r 0000|00eng d .b10079154 AIT Thesis no. EV-87-9 Ying, Wong Ching Anaerobic treatment using two-phase downflow stationary fixed-film reactor Bangkok : Asian Institute of Technology, 1987 60 p. Thesis ; no. EV-87-9 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1987 The application of DSFF reactor to both two phase and single phase anaerobic system was studied. The performance of DSFF reactors in methanogenic phase, which received the different organic acid as carbon and energy source, was also investigated. The effect of phase seperation over single phase system and the effect of different organic acid over methanogenic efficiency was evaluated. One mixed flow reactor was used as acidogenic reactor for two phase system and all reactors were operated in 35 degree C temperature controlled room. Same concentration (5000 mg/l) of glucose or acetic acid was used in each system in order to make direct comparison. It was found that DSFF reactor can be applied to both single phase and two phase system with acceptable process performance. DSFF reactors were very stable and tolerant to operational accident. Two phase system has no significant advantage over single phase system in this study. The methane fermentation by acetate alone failed to maintain methanogenic enrichment whereas the bacteria receiving the various organic acid other than acetic acid could perform well. Type of material and architecture of supporting media are very important functions for application of DSFF reactor in anaerobic digestion process. The packing material made with acrylic corrugated plastic sheet could not provide the good biofilm attachment resulting in less process performance than that of maximum obtainable one . Sewage Purification Biological treatment Hanaki, K., Chairperson Samorn Muttamara, Examination Committee Vigneswaran, Saravanamuthu, Examination Committee DAAD, Federal Republic of Germany, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-87-9 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B19215 .b10079154 mnait x 240410 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003043717 CREATED : 1994-05-16 RECORD # : i10080272 LPATRON : 1020380 LCHKIN : 2008-04-20 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050003043725 CREATED : 1994-05-16 RECORD # : i10080284 LPATRON : 1030102 LCHKIN : 2020-07-21 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 6 TOT RENEW : 1 Barcode : 30050120223861 CREATED : 2016-10-05 RECORD # : i12973130 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 4377 4377 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. EV-87-9 30050003043717 2026-08-17 16:22:31 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. EV-87-9 30050003043725 2026-08-17 16:22:31 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. EV-87-9 30050120223861 2026-08-17 16:22:31 2026-08-17 40