| There are large population and energy shortage in the rural areas of China, promote the innovation development of biogas technology can not only provide a source of biomass energy, but also use the agriculture and livestock waste, at the same time provide organic fertilizer for farmers, so biogas technology has significant energy, economic, ecological and environmental benefits. Studying on the biogas production efficiency of different fermented material under different environmental conditions, has important function on determining the optimum proportion of fermented material, it also provide technical guidance for farmers, and provide a theoretical basis for household biogas suitability evaluation in China.This research was carried out in controllable constant–temperature fermented equipment, selected pig dung, cow dung, human excrement, chicken dung, wheat straw, rice straw and corn stalks, the proportioning materials of TS ratio (1∶1, 2∶1, 3∶1) of pig dung respectively with wheat straw rice straw and corn stalks and cow dung respectively with wheat straw rice straw and corn stalks as raw materials, chose 25℃, 30℃, 35℃, 40℃as constant temperature. Through research and analysis, the main conclusions were drawn as following:(1) Single raw materials: the biogas production efficiency of the pig dung was better than others the production of pig manure gas efficiency than other raw materials, at 30℃the total biogas production was 113767mL, the rate of pool gas production was 255.7mL/L·d, the rate of TS biogas production was 474.0mL/g, and the total days of produced was 89 days; human excrement was worst, at 40℃the total biogas production was 20335mL, the rate of pool gas production was 48.4mL/L·d, the rate of TS biogas production was 84.7mL/g, and the total days of produced was 84 days; the biogas production efficiencies of pig dung, cow dung and chicken dung were better than that of 3 kinds of straws, corn straw's biogas yield was better than other two straws, at 40℃the total biogas production was 63985mL, the rate of pool gas production was 142.2mL/L·d, the rate of TS biogas production was 266.6mL/g, and the total days of produced was 90 days.(2) Mixed raw materials of pig dung and straws: from the cumulative gas production, at 30℃the 3∶1 TS ratio of pig dung and corn stalks'cumulative gas production was maximum 69170 mL, which was higher than others; and at 25℃the 2∶1 TS ratio of pig dung and wheat straw's cumulative gas production was 16272 mL, which was lowest. Mixed raw materials of cow dung and straws: at 40℃the 2∶1 TS ratio of cow dung and corn stalks'cumulative gas production was 62610 mL, which was higher than others; and at 25℃the 1∶1 TS ratio of pig dung and wheat straw's cumulative gas production was 24875 mL,which was the lowest.(3) The SAS analysis showed that: at 25℃when the TS ratio of pig dung and rice straw is 1.6∶1, at the the 57th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 62549 mL; at 35℃w hen the TS ratio of pig dung and rice straw is 2.6∶1, at the the 56th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 67759 mL; at 25℃when the TS ratio of pig dung and corn stalks is 3.3∶1, at the the 62th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 62649 mL; at 35℃when the TS ratio of pig dung and corn stalks is 1.6∶1, at the the 53th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 66630 mL; at 25℃when the TS ratio of cow dung and wheat straw is 2.7∶1, at the the 81th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 38447 mL; at 30℃when the TS ratio of cow dung and wheat straw is 1.3∶1, at the the 61th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 39352 mL; at 35℃when the TS ratio of cow dung and wheat straw is 2.1∶1, at the the 65th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 47764 mL; at 25℃when the TS ratio of cow dung and rice straw is 1.6∶1, at the the 64th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 34664 mL; at 35℃when the TS ratio of cow dung and rice straw is 1.3∶1, at the the 110th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 48913 mL; at 40℃when the TS ratio of cow dung and rice straw is 4.9∶1, at the the 63th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 54347 mL; at 25℃when the TS ratio of cow dung and corn stalks is 1.7∶1, at the the 65th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 40056 mL; at 30℃when the TS ratio of cow dung and corn stalks is 1.2∶1, at the the 66th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 41458 mL; at 40℃when the TS ratio of cow dung and corn stalks is 1.4∶1, at the the 57th day of anaerobic fermentation, the maximum cumulative biogas production is expected to reach 62364 mL.
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