03792nam a2200445 4500 20260818214127.0 011298s1986 th r 0000|00eng d .b10717596 AIT Thesis no.EV-86-1 Shanmuganantha, Sivasubramaniam The SIROFLOC process for treating turbid waters of Thai sources Bangkok : Asian Institute of Technology, 1986 150 p. Thesis ; no. EV-86-1 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, 1986 Most water treatment involves coagulation-flocculation process in the removal of turbidity and color. The SIRIFLOC Process is a recently developed coagulation-adsorption process where recoverable magnetite is used as coagulant-adsorbent instead of conventional coagulants. The SIROFLOC Process is being used in Australia, United Kingdom and Republic of China as a successful alternative to conventional processes. The applicability of SIROFLOC Process to waters of Chao Phrya River of Thailand in removing turbidity and color was considered on a laboratory scale in this study. Several samples were jar-tested with pH, dosage of magnetite and dosage of polyelectrolyte as controlling parameters to study the effect of the above controlling parameters on the removal of turbidity and color. Similar studies were performed simultaniously with alum instead of magnetite as coagulant for comparison purposes. Results indicated that with initial turbidities ranging from 25-160 NTU and obtained during September 1985 - January 1986 period, SIROFLOC Process produced effluents of turbidity and color less than 5 NTU and 50Hazen respectively. The optimum conditions varied from sample sample. Removal of turbidity rather than removal of color governed such optimum conditions. Dosages of magnetite from 0.5-1.5% wjw were found to be sufficient. Dosage of cationic type polyelectrolyte in the range of 0.25-0.50 mgjl gave satisfactory results. pH closer to the natural pH (about 7.0) was found to be quite appropriate. For initial turbidities less than 48 NTU both alum and magnetite were equally effective but beyond 48 NTU magnetite gained superiority over alum. Magnetite was found to be superior to alum for initial color values greater than 150Hazen. Regeneration of Magnetite was very effective. Sewage Purification Flocculation Fude, I., Chairperson Shin, H.S., Examination Committee Hanaki, K., Examination Committee Fish, E.J., Advisor Wang, R.R., Advisor NORAD, Norway, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-86-1 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B19623 .b10717596 mnait x 240402 2 951012 m a x 4 mnait mnait mnarc 22 40 20 Barcode : 30050120804314 CREATED : 2014-03-28 RECORD # : i12782270 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120224174 CREATED : 2016-09-05 RECORD # : i12972824 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121074255 CREATED : 2023-03-04 RECORD # : i13441772 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 107342 107342 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-86-1 30050120804314 2026-08-18 21:41:27 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.EV-86-1 30050120224174 2026-08-18 21:41:27 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-86-1 30050121074255 2026-08-18 21:41:27 1 2026-08-18 20