02874nas a2200433 4500 20260818095202.0 271098s1981 th r 000| eng d .b10229590 AIT Thesis no.EV-81-8 Tanumiharja, Yani Indriani Effectiveness of plastic media in removing turbidity in horizontal flow filter Bangkok : Asian Institute of Technology, 1981 35 leaves : ill. Thesis ; no. EV-81-8 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1981 A bench-scale horizontal filter was used to study the effectiveness of the plastic media as a filter media. The various parameters affecting the filter performances were studied and the transport mechanism was investigated. Experiments were conducted by varying raw water turbidities and flow rates. It was found that the plastic balls were efficient in removing suspended solids only in the range of 30 to 60%. The optimum flow rate for this removal of small particle of suspended solids was 1.5 m3/m2 h for the different levels of influent turbidities. For bigger particle size, the optimum flow rates were 0.5 m3/m2 h, 1.0 m3/m2 h and 1.5 m3/m2 h for influent turbidity levels of 150 FTU, 100 FTU and 50 FTU, respectively. The predominant transport mechanisms in this study were hydrodynamic action and gravity. The others mechanisms were not found to be significant Water Purification Filtration Filters and filtration Nguyen, Cong Thanh, Chairperson Watanabe, Yoshimasa, Co-Chairperson Chongrak Polprasert, Examination Committee Government of the Federal Republic of Germany, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-81-8 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B21598 .b10229590 mnait x 250106 2 951012 m a x 0 mnait mnait mnarc 22 40 20 Barcode : 30050120655856 CREATED : 2014-03-02 RECORD # : i1275447x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160084736 CREATED : 2016-04-05 RECORD # : i12968523 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121075302 CREATED : 2023-03-16 RECORD # : i13438347 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 34954 34954 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-81-8 30050120655856 2026-08-18 09:52:03 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.EV-81-8 30050160084736 2026-08-18 09:52:03 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-81-8 30050121075302 2026-08-18 09:52:03 1 2026-08-18 20