C/N对沼气产气量的影响

Effect of C/N on Gas Production of Biogas

以鲜猪粪和风干稻草为原料,采用批量发酵法研究不同C/N(18/1、23/1、28/1、33/1、38/1、43/1)对厌氧发酵产气量和产气特性的影响。结果表明,在常温条件下,各处理沼气发酵均能迅速启动,但C/N为23/1的处理发酵启动最快;C/N为33/1的处理60 d发酵平均日产气量、总产气量和TS产气率最高。

With fresh pig manure and air dry straw as the materials, the effects of different Co/N （18/1, 23/1, 28/1, 33/1, 38/1, 43/1）on gas produc-tion and gas characteristics in anaerobic fermentation process were studied with batch fermentation method. The results showed that all treatments could be rapidly starting biogas fermentation under ambient temperature, but the starting of biogas fermentation in treatment with C/N of 23/1 was the most rapidly. The average daily gas production, total gas production and TS gas production rate in treatment with C/N of 33/1 were the highest in 60 d.