03272nas a2200433 i 4500 20260818171746.0 150399s1990 th u m rtt 0| a1eng d .b10498722 AIT Thesis no.EV-90-3 Chowdhury, A. K. M. Moniruzzaman Petroleum waste biodegradation with porous biomass support system (PBSS) on a rotating biological contactor Bangkok : Asian Institute of Technology, 1990 96 p. Thesis ; no. EV-90-3 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, 1990 A laboratory scale study was conducted to find the feasibility of the n ew coupling of Rotating Biological Contactor (RBC) plus Porous Biomass Support System (PBSS) using polyurethane foam as porous support media to biodegrade petroleum refinery wastewater. Polyurethane foam was attached on disks of two four-stage laboratory scale cascade connected RBC units. The two RBC units were operated simultaneously at different but constant, flowrates giving hydraulic loading rates of .01. .02, .03, .04 m3/m2/ d in two runs keeping the same rotational speed throughout. Organic loading was a less controllable factor in t his study. For all of the hydraulic loadings, it was found that the removal efficiency of total chemical oxygen demand (TCOD) and Oil were above 80 percent. Ammonia nitrogen removal were above 90 percent and for Phenol it was found above 85 percent. Two kinetics of ammonia nitrogen removal ( Monod and Caperon- Meyer kinetics ) fit well with the experimental data . Throughout the study, t he biomass concentration within the polyurethane foam was investigated. The results show that this new technology can be applied effectively for practical purposes with moderate hydraulic loading rates. Sewage Purification Biological treatment Factory and trade waste Tran, Francis T., Chairperson Chongrak Polprasert, Examination Committee Harada, Hideki, Examination Committee Canadian International Development Agency (CIDA), Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-90-3 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B18343 .b10498722 mnait x 240404 2 951012 m a x 0 mnait mnait mnarc 22 40 20 Barcode : 30050120806764 CREATED : 2014-03-28 RECORD # : i12781496 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120223028 CREATED : 2016-11-05 RECORD # : i12974018 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121074107 CREATED : 2023-05-04 RECORD # : i13442120 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 87353 87353 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-90-3 30050120806764 2026-08-18 17:17:46 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.EV-90-3 30050120223028 2026-08-18 17:17:46 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-90-3 30050121074107 2026-08-18 17:17:46 1 2026-08-18 20