貂粪沼气发酵产气潜力研究

Study on the Potential Gas Production of Mink Feces Biogas Fermentation

[目的]研究不同料液比对貂粪沼气发酵产气效果的影响,为以貂粪为原料进行沼气发酵及貂粪的多样化处理提供参考。[方法]以貂粪为原料,沼液为接种物,35℃恒温厌氧发酵,比较不同料液比对貂粪产气效果的影响。[结果]试验表明,发酵料液配比为1∶2时,貂粪更易降解,产气量高。试验初步确定貂粪发酵的水力滞留时间为21 d。料液总固体(TS)浓度为6.0%时,貂粪的产气潜力为345.7 mL/g TS,350.3 mL/g挥发性固体(VS)。[结论]貂粪是一种无需调碳氮比且产沼气潜力很高的发酵原料。

[ Objective] Study on the effects of different ratio of solid to liquid mink feces biogas production of mink dung, in order to provide reference for the biogas fermentation and the variety treatment of mink feces. [ Method ] Using the mink dung as raw material,biogas slurry as inoculum, 35 °C constant temperature anaerobic fermentation, the effects of different liquid ratio on gas production of mink feces were com-pared. [Result] The results show that mink dung was more easily degraded and produced more gas when the ratio of fermented liquid was 12. The preliminary test confirmed that the HRT of mink dung fermentation was 21 d. When the total liquid solid （TS） concentration was 6% , the gas production potential of mink dung was 345. 7 mL/g TS, 350. 3 mL/g YS. [ Conclusion] Mink dung is a fermentation material with high po-tential for producing biogas without adjust carbon-nitrogen ratio.