03414nam a2200409 4500 20260819085207.0 th eng .b1168673x AIT Thesis no. EV-97-03 Anchalee Natikool Treatment of domestic wastewater with chemical precipitation Bangkok : Asian Institute of Technology, 1997 71 leaves Thesis ; no. EV-97-03 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1997 This study investigates the feasibility for the operation of domestic wastewater treatment by chemical precipitation. In this study AIT wastewater was employed as a domestic wastewater being treated. Three coagulants which are ferric chloride, polyaluminium chloride and ferric sulfate were employed as a coagulants. Jar test which was used to determine the optimum coagulant dosage and pH results that the most appropriate coagulant, among above three coagulants, for applying with AIT wastewater treatment is fenic chloride. The optimum dosage and pH of ferric chloride are 400 mg/l and 8.0 respectively. By applying ferric chloride as a coagulant for AIT wastewater treatment through a chemical precipitation, it is found that the effluent concentration are met requirement of the DEG. The effluent concentration and the removal efficiency for removal of BOD, TSS, TDS, Org-N and TP, which are 16 mg/l, 4 mg/l, 15 mg/l, 4 mg/l, and 0.4 mg/l respectively, and 70%, 89%, 32%, 33% and 80% respectively, can be achieved through chemical treatment system. From comparison between chemical treatment process and biological treatment process, it is interesting to indicate that the chemical treatment process has more advantages over the biological treatment process. As above it can be indicated that chemical wastewater treatment is an acceptable method for domestic wastewater treatment, and can replace the conventional biological treatment system. Sewage Purification Precipitation Samorn Muttamara, Chairperson Chongrak Polprasert, Examination Committee Ha, Sung Ryong, Examination Committee Electricity Generating Authority of Thailand, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-97-03 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B14290 .b1168673x mnait y 240403 0 971208 m a y 0 mnait mnait mnarc 20 40 Barcode : 30050120600779 CREATED : 1996-11-07 RECORD # : i12035877 LPATRON : 1017647 LCHKIN : 2005-07-12 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 3 Barcode : 30050120600761 CREATED : 1996-11-07 RECORD # : i12035889 LPATRON : 1017647 LCHKIN : 2005-09-25 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 21 TOT RENEW : 14 Barcode : 30050160078571 CREATED : 2016-05-23 RECORD # : i12986264 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 123006 123006 0 0 0 0 MAIN MAIN mnait 2026-08-19 0 AIT Thesis no. EV-97-03 30050120600779 2026-08-19 08:52:07 1 2026-08-19 20 0 0 0 0 MAIN MAIN mnait 2026-08-19 0 AIT Thesis no. EV-97-03 30050120600761 2026-08-19 08:52:07 2 2026-08-19 20 0 0 0 0 MAIN MAIN mnarc 2026-08-19 0 AIT Thesis no. EV-97-03 30050160078571 2026-08-19 08:52:08 2026-08-19 40