04093cas|a2200409 i 4500 20260818133522.0 170399s1992 th u m rtt 0| a1eng d .b10331062 AIT Thesis no.EV-92-21 Jayadevan, Jeyabalasingham High rate anaerobic treatment of industrial wastewater at thermophilic condition Bangkok : Asian Institute of Technology, 1992 100 p. Thesis ; no. EV-92-21 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1992 In order to establish guidelines for design and operation of thermophilic UASB process, a semi pilot scale modified Up flow Anaerobic Sludge Blanke~ (UASB) reactor ( 125 1) was used to treat the different industrial wastewater at a temperature of 55 C. At first a wastewater from distillery factory which has the BOD/COD ratio of 0.25 was used to evaluate the feasibility of the modified reactor. Jhe influent COD was maintained at 10,000 mg/l approximately. The loading rate of 19 kg COD/m .d already reached by Chen et al (Thesis no EV 91 - 20) was maintained for a pe1iod of further two months until the pseudo steady condition was reached 3 and maintained for a period of one month. Then the loading rate was increased to 27 kg COD/m .d by increasing the flow rate to 350 lid for further two months (HRT = 8.6 hrs). Pseudo steady condition could be maintained for more than three weeks. This shows the capability of treating this Distillery wastewater successfully tlyough anaerobic treatment at the thermophilic condition upto the loading rate of 27 Kg COD/m .d . Because of less removal efficiency (i.e. 30% in te1ms of COD) of distille1y wastewater due to its low biodegradability, another sample from Amino acid production which had the BOD/COD ratio of 0.43 was used to evaluate the reactor perfo1mance in terms of removal efficiency and loading rate. The Tapioca Starch wastewffiter from the Amino acid production which is used for the animal feed was started feeding from 25 December 1991. Initially influent strength of 5000 mf/l was introduced at a flow rate of 100 lid (HRT = 25 hrs). The loading rate was 4.6 kg COD/m d. Due to its inhibitory effect because of very high sulfate concentration of 5000 mg/l the influent strength was red~ced to 3000 mg/l maintaining the same HR T, but reduced organic loading rate to 2 .4 kg COD/m .d. The removal efficiency of 68% in terms of COD was achieved during the last phase. The 58% BOD removal efficiency in terms of total effluent BOD indicate the system is still acclimatizing for the new wastewater. So the feasibility of treating this wastewater can be predicted only after a few months of further experiment. Sewage Purification Biological treatment Harada, Hideki, Chairperson Tanaka, Shuzo, Examination committee Zhuang, Ya- Hui, Examination committee Government of Finland, Scholarship donor Asian Institute of Technology. Thesis ; no. EV-92-21 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16840 .b10331062 mnait x 240402 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003046785 CREATED : 1994-05-17 RECORD # : i10411458 LPATRON : 1021438 LCHKIN : 2009-03-26 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050002586724 CREATED : 1994-05-17 RECORD # : i1041146x LPATRON : 1016378 LCHKIN : 2009-10-21 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 10 TOT RENEW : 8 Barcode : 30050160056080 CREATED : 2016-11-05 RECORD # : i12974821 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 55012 55012 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.EV-92-21 30050003046785 2026-08-18 13:35:22 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.EV-92-21 30050002586724 2026-08-18 13:35:22 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.EV-92-21 30050160056080 2026-08-18 13:35:22 2026-08-18 40