03001nas|a2200385 i 4500 20260817162551.0 041112s2004 th uzm rtt 00| a1eng d .b11947470 AIT Thesis no.EV-04-16 Nguyen Thi Ngoc Tran Anammox fluidized bed reactor for wastewater nitrogen removal Pathum Thani, Thailand : Asian Institute of Technology, 2004 64 leaves Thesis ; no. EV-04-16 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, 2004 Research on a novel process in which ammonium is converted to dinitrogen gas under anoxic conditions with nitrite as the electron acceptor is carried out. Anaerobic ammonium oxidation (Anammox) process is studied in the fluidized bed reactor with NH4N and N02N as feed. The reactor was initiated with seed sludge from nitrifying/denitrifying fluidized bed reactor. The startup process lasted for 42 days. NH4N and N02N concentration was increased from 100 mg/I to 300 mg/I, and loading was changed from 0.218 to 0.638 kg NH4N/m3reactor·d and from 0.22 to 0.637 kg N02N/m3reactor·d during the startup. Upflow velocity was maintained at 3 m/h during the startup. By the end of sta1tup, NH4N and N02N conversion of 74.77% and 77.07% were obtained. During process operation, influent NH4N and N02N concentration was increased in steps from 100 mg/I to 300 mg/I. Upflow velocity was maintained at 3.17 m/h. According loading rate was varied from 0.288 kg NH4N/m3reactor·d and 0.332 kg N02N/m3reactor·d to 0.874 kg NH4N/m3reactor·d and 0.878 kg N02N/m3reactor·d. NH4N and N02N removal was obtained as 87% to 95%. Gas generation was observed as 3.453 lid at 0.874 kg NH4N/m3reactor·d loading rate which was 56% of theoretical yield. N2 composition was observed to be from 98% to 99 % of total biogas volume. Sewage Purification Nitrogen removal Annachhatre, Ajit P., Chairperson Preeda Pakpian, Examination Committee Satoh, Hiroyasu, Examination Committee AIT Fellowship, Scholarship donor Asian Institute of Technology. Thesis ; no. EV-04-16 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B08944 .b11947470 mnait u 240423 0 041112 m a u 0 mnait mnarc 22 40 Barcode : 30050120706378 CREATED : 2014-04-02 RECORD # : i12755503 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160050927 CREATED : 2016-05-25 RECORD # : i12990875 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 5445 5445 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.EV-04-16 30050120706378 2026-08-17 16:25:51 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.EV-04-16 30050160050927 2026-08-17 16:25:51 2026-08-17 40