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008 951014s1987 th u m rtt 000 a eng d
035 _a.b10248225
099 9 _aAIT Thesis no. EV-87-25
100 1 _aLin, Kuo-ching
245 1 0 _aEnhanced biogas generation using mixed substrate in UASB reactor
260 _aBangkok :
_bAsian Institute of Technology,
_c1987
300 _a66 p.
490 1 _aThesis ;
_vno. EV-87-25
500 _aA thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502 _aThesis (M. Eng.) - Asian Institute of Technology, 1987
520 _aThis study aimed to assess the feasibility of using mixed substrate to enhance biogas generation from Upflow Anaerobic Sludge Blanket CUASB> process . Three 8 . 5 L-UASB reactors were fed with different mixture ratios of chicken manure and brewery wastewater. Initially the process started up at an organic loading rate of 0.62 kg COO/m3 .d. and at a hydraulic retention time of 48 hr at 35° c. Organic loading rate was increased up to 6.3 kg CO O/m3 .d 8 weeks after t he star t - up with improve d performance . COO removal efficiency reached up to 90 %. Daily gas production started slowly and picked up rapidly at the later stage . At final stage, approximately 9 L of total gas could be produced daily a nd the average gas production rate was 180 L/kg COO added. It was found that the best results were obtained with the digester fed with the mixture of 25 % poultry manure a nd 75 % brewery wastewater at the organic loading rate of 3.1 1 kg COO/m3 .d a nd 24- hr hydraulic retention time. The gas yield was 247 L/kg COO add ed. The methane content of the biogas from t he waste varied from 66 to 73 %. Efficiency of methane generation was 40 % of the maximum potential.
650 0 _aSewage
_xPurification
_xBiological treatment
700 1 _aShin, Hang-Sik,
_eChairperson
700 1 _aHanaki, K.,
_eExamination Committee
700 1 _aVigneswaran, Saravanamuthu,
_eExamination Committee
710 2 _aThe Government of R.O.C.,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-87-25
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B19248
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