03490cas|a2200409 i 4500 20260818095249.0 170399s1991 th uzm rtt 00| a1eng d .b10230579 AIT Thesis no. EV-91-19 Gnanadipathy, Anil Effects of inoculum sources on UASB reactors treating a low strength wastewater Bangkok : Asian Institute of Technology, 1991 100 p. Thesis ; no. EV-91-19 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1991 Laboratory scale experiments were carried out to study the feasibility of employing upflow anaerobk sludge blanket (UASB) reactors to treat domestic and relatively low strength wastewater. Four 30- 1 UASB reactors, each with a 0.15 m inner diameter and 2m height, were used in this study which was conducted at an average ambient temperature of 30°C. Three reactors were inoculated with different types of seed sludge, namely: sludge from a facultative waste stabilization pond, anaerobically digested sewage sludge, and anaerobic sludge from a distillery wastewater treatment plant. The fourth reactor was started without inoculum and was studied for possible self inoculation. The AIT wastewater was mixed with a stock glucose solution to increase the influent COD concentrations to about 600 mg/l. All four reactors were started with a hydraulic retention time (HRT) of 24 h and this HRT was later reduced to 12, 6 and 3 h, consecutively, corresponding to organic loading rates (OLR) of 0.6, 1. 2, 2.4 and 4.8 kg COD/(m3.d), respectively. After about 2 months of operation, all four reactors were able to remove approximately 90% of con supplied. Scanning electron microscopic (SEM) examination of the sludge found the presence of Methanothrix bacteria to be predominant. Granulation process was not complete after 130 days of reactor operation; flocculent sludge was observed in the reactors. The experimental results obtained have suggested a technical feasibility of employing UASB reactors to treat domestic wastewaters. Sewage Purification Activated sludge process Chongrak Polprasert, Chairperson Verink, Johan, Co-Chairperson Harada, Hideki, Examination Committee Deutscher Akademischer Austauschdienst (German Academic Exchange Service), Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-91-19 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17410 .b10230579 mnait x 240329 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003046199 CREATED : 1992-12-18 RECORD # : i10281101 LPATRON : 1018634 LCHKIN : 2004-08-23 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050003046207 CREATED : 1992-12-18 RECORD # : i10281113 LPATRON : 1014302 LCHKIN : 2000-03-26 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 1 Barcode : 30050160056429 CREATED : 2016-11-05 RECORD # : i1297447x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 35181 35181 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV-91-19 30050003046199 2026-08-18 09:52:49 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV-91-19 30050003046207 2026-08-18 09:52:49 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. EV-91-19 30050160056429 2026-08-18 09:52:49 2026-08-18 40