04057nas a2200433 i 4500 20260818223800.0 160699s1991 th u m rtt 0| d1eng d .b10661505 AIT RSPR no. EV-91-01 Hu, Qichun Systematical study on biogas technology application in Xindu rural area, China Bangkok : Asian Institute of Technology, 1991 88 p. + 1 online resource Research studies project report ; no. EV-91-1 A research study submitted for approval in partial fulfillment of the requirement for the degree of Master of Science Research Studies Project Report (M.Sc.) - Asian Institute of Technology, 1991 The field survey mainly by means of questionnaire to investigate the present state of the application of biogas technology, was conducted in the three representative villages in Xindu county, China. Among total of 1678 farmer households, there were 804 households owning digesters, but only 374 digesters in use. Biogas shared 7.5% of daily fuel c3nsumpti on. Under local condition, the capital invested of a digester with 8 m volume \vas 439 Yuan, (equivalent to 93 U$, 1990). If one household digester could produce 246.6 m3 biogas per year and the equivalent price of biogas was 0.265 Yuan, the pay-back time was about 7 years. The vast majority of present digesters in use were cylindrically fixed dome hydraulic digesters with an average volume of 9.6 m3. Based on conventional type of the digesters, some modified digesters have developed recent years , in this area. The quality and the lifetime of the digesters in use were also be analyzed. There were nearly half of the digesters in use, need to be renewed gradually up t o 1995, since the reason of their quality. Otherwise the biogas consumption level in these areas would be reduced later on. Meanwhile the proposals for solvi ng the problems restraining the adoption of biogas technology were also given. The economic benefits of the digesters could be promoted by both increasing the using ratio of total digesters and the biogas production rate. And also the application of the technologies of digested residue could increase the income from biogas fermentation. Because there crop straws were rarely being used as fermentation materials, the function of converting straws to fertilizer by the digersters might be loss. In addition, since only pig manure and human excreta were as the substrate, the shortage of fermentation material was common problem. A new pattern for straw utilization was proposed, in which raising cattle with straw as a feed, and consequently the feed of cattle manure to the digesters is likely a promising way to solve the shortage of fermentation material. Biogas China Xindu Harada, Hideki, Chairperson Tentscher, Wolfgang, Examination committee Verink, Johan, Examination committee Mino, T., Examination committee Australian Government, Scholarship donor Asian Institute of Technology. Research studies project report ; no. EV-91-1 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17055 .b10661505 mnait y 240401 2 951012 m a y 0 mnait mnait mnarc 22 40 20 Barcode : 30050120613442 CREATED : 2012-10-10 RECORD # : i12703266 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120220552 CREATED : 2016-01-04 RECORD # : i12920174 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121073976 CREATED : 2023-07-04 RECORD # : i13442259 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 117303 117303 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT RSPR no. EV-91-01 30050120613442 2026-08-18 22:38:00 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT RSPR no. EV-91-01 30050120220552 2026-08-18 22:38:00 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT RSPR no. EV-91-01 30050121073976 2026-08-18 22:38:00 1 2026-08-18 20