02876cas|a2200385 i 4500 20260818095213.0 230399s1993 th uzm rtt 00| a1eng d .b10229838 AIT Thesis no.EV-93-20 Ouyang Ming Effects of anaerobic conditions on biological phosphorus removal and sludge settleability Bangkok : Asian Institute of Technology, 1993 88 leaves + 1 online resource Thesis ; no. EV-93-20 A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1993 The effects of anaerobic conditions on biological phosphorus removal and sludge settleability in anaerobic aerobic activated sludge process have been studied by both continuous flow and batch experiments. In the continuous flow experiments, ten systems with different anaerobic configurations and various anaerobic retention time were operated. It has been observed that the growth of some filamentous organisms was suppressed under three-compartment anaerobic cascades as results of more soluble COD reduction and substrate gradient in anaerobic zone. The systems with anaerobic cascades also showed good phosphorus removal. It has been observed that anaerobic retention time should long enough to reduce soluble COD to penetrate aerobic zone. Longer anaerobic retention time such as 3 and 5 hours resulted in better phosphorus removal. In those systems without anaerobic cascade, severe filamentous bulking took place, even though the anaerobic retention time were similar to those of cascade systems. In the batch experiment, effects of anaerobic retention time on phosphorus removal was confirmed, suitable anaerobic retention time could achieve a better performance of phosphorus removal. Sewage Purification Phosphate removal Lee, Seong-Key, Chairperson Samorn Muttamara, Examination Committee Tanaka, Shuzo, Examination committee Royal Government of Denmark, Scholarship donor Asian Institute of Technology. Thesis ; no. EV-93-20 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16230 .b10229838 mnait x 240329 2 951012 m a x 0 mnait mnarc 22 40 Barcode : 30050120806095 CREATED : 2014-03-28 RECORD # : i12782063 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160055785 CREATED : 2016-11-05 RECORD # : i12975126 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 35008 35008 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-93-20 30050120806095 2026-08-18 09:52:13 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.EV-93-20 30050160055785 2026-08-18 09:52:13 2026-08-18 40