03038nam a2200421 4500 20260817162155.0 th eng .b10067723 AIT Thesis no.994 Leow, Huan Nam Alternatives in slow filtration for treatment of tropical surface water Bangkok : Asian Institute of Technology, 1976 57 p. Thesis ; no. 994 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science of the Asian Institute of Technology, Bangkok, Thailand. Thesis (M.Sc.) - Asian Institute of Technology, 1976 A pilot plant consisting of series and dual media filters was operated discontinuously at a filtration rate of 0.15 m3 /m2-h under the average raw water turbidity of 45 JTU. The filters used were the coconut fiber - burnt rice husk series filter, burnt rice husk - sand series filter, burnt rice husk - sand and coconut fiber - burnt rice husk dual media filters. It was found that the burnt rice husk - sand dual media filter with the discontinuous operation could produce good quality water suitable for drinking purpose in term of its clarity and bacteriological content for a period of about 2~ months. Odor and anaerobic condition prevailed in the coconut fiber - burnt rice husk series and dual media filters. Due to the high head loss build up rate, the burnt rice husk was not suitable to be used as a roughing filter medium in the series filtration system. Preliminary study on the turbidity removal performance and head loss development of these filters operated continuously at a filtration rate of 0.15 m3 /m2-h but slowed down during the night time (16 h) were also conducted. Water Purification Filtration Nguyen Cong Thanh, Chairperson Samorn Muttamara, Examination Committee Woo, K.Y., Examination Committee Nguyen T. P., Examination Committee Lee Foundation of Singapore, Scholarship Donor Asian Institute of Technology. Thesis ; no. 994 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B23865 .b10067723 mnait x 260402 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003039749 CREATED : 1994-05-16 RECORD # : i10065106 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003039731 CREATED : 1994-05-16 RECORD # : i10065118 LPATRON : 1016809 LCHKIN : 2004-03-24 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160089396 CREATED : 2016-04-28 RECORD # : i12962703 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 4145 4145 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no.994 30050003039749 2026-08-17 16:21:55 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no.994 30050003039731 2026-08-17 16:21:55 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.994 30050160089396 2026-08-17 16:21:55 2026-08-17 40