03260nam a2200421 4500 20260818090722.0 221297 th eng .b10198581 AIT Thesis no. 509 Nongnuch Jaksirinont Development of a series filtration water treatment method for small communities of Asia Bangkok, Thailand : Asian Institute of Technology, 1972 102 p. Thesis ; no. 509 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand. Thesis (M.Eng.) - Asian Institute of Technology, 1972 A series filtration water treatment system using local materials was developed for treating surface water in small communities of Asia. Design criteria were developed using coconut husk fiber as roughing filter medium and burnt rice husk as polishing filter medium. The optimum filtration rate was 1.25 m3 /m2 /hr for both filters. The optimum depth of media using series filtration units was at 100 cm for coconut husk fiber and 80 cm for burnt rice husk. A dual media filter, comprising coconut husk fiber of 80 cm depth followed by burnt rice husk of 20 cm depth, fed at a filtration rate of 1.25 m3 /m2 /hr, had efficiencies for turbidity and coliform removal greater than 99% when treating surface waters. Duration of the filter run, using the dual media, would approximate one month's operating time based on current village water use habits in Thailand. The dual media filter appears promising as a tertiary waste treatment process also. For raw water sources with turbidity less than 40 JTU, a single media filter of burnt rice husk, fed at filtration rate of 0.25 m3 /ma/hr, proved to be satisfactory to provide a high efficiency of turbidity and coliform removal. Water Purification Filtration Asia Frankel, Richard J., Chairperson Pescod, M.B., Examination Committee Asian Institute of Technology, Scholarship Donor Asian Institute of Technology. Thesis ; no. 509 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B24404 .b10198581 mnait v 260619 1 951012 m a v 0 mnait mnarc mnarc mnait 20 40 Barcode : 30050003030425 CREATED : 1995-07-01 RECORD # : i11776389 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003030417 CREATED : 1995-07-01 RECORD # : i11776390 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160107560 CREATED : 2016-04-21 RECORD # : i12945031 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121037302 CREATED : 2022-11-24 RECORD # : i13416455 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 28957 28957 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 509 30050003030425 2026-08-18 09:07:22 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 509 30050003030417 2026-08-18 09:07:22 3 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 509 30050160107560 2026-08-18 09:07:22 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 509 30050121037302 2026-08-18 09:07:22 1 2026-08-18 20