03090nas a2200397 4500 20260817171233.0 301098s1983 th r 000| 0eng d .b10109882 AIT Thesis no. EV-83-23 Shin, Hyun Kook Behaviour of coliform group in oxidation ponds Bangkok : Asian Institute of Technology, 1983 77 leaves : ill. Thesis ; no. EV-83-23 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science Thesis (M.Sc.) - Asian Institute of Technology, 1983 Three different types of coliform bacteria, E. coli., C. freundii and Kebsiella sp. were the major coliform group found in ArT oxidation ponds. These coliform bacteria were isolated from a sewage sample of the oxidation ponds, and the behaviour of each coliform bacteria was investigated. E. coli was the major coliform group in the influent of the oxidation ponds, while Klebsiella sp. was the most abundant group in the effluent of the oxidation ponds. More than 99.9% of C. freundii and about 99.9% of E. coli were removed, but 99.7% of Klebsiella sp.was eliminated in the oxi- dation ponds. And also, most of the coliform bacteria were eliminated in facultative pond, around 99.5% of total coliform bacteria. Based on the results of laboratory test, pH, temperature, light inten- sity and coliphage were the major factors affecting.the die-off process of coliform bacteria. Among species, Klebsiella sp. was the most resistant bacteria to the several environmental conditions. E. coli and C. freundii were more susceptible. Coliphage was also a significant parameter affecting the die-off process of coliform bacteria. An increased destruction of coliform bacteria was obtained especially in such conditions as high temperature, a little acidic pH range and high dosage of coliphage. Water quality management Nepal Phewa Lake Omura, Tatsuo, Chairperson Chongrak Polprasert, Examination Committee Vigneswaran, S., Examination Committee CDG, Federal Republic of Germany, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-83-23 .b10109882 mnait x 231005 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003041901 CREATED : 1994-05-16 RECORD # : i10122345 LPATRON : 1015250 LCHKIN : 2005-01-23 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 5 TOT RENEW : 2 Barcode : 30050120224794 CREATED : 2016-04-05 RECORD # : i12969965 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121074735 CREATED : 2023-03-21 RECORD # : i13439509 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 11447 11447 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. EV-83-23 30050003041901 2026-08-17 17:12:33 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. EV-83-23 30050120224794 2026-08-17 17:12:33 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no. EV-83-23 30050121074735 2026-08-17 17:12:33 1 2026-08-17 20