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为探索秸秆与焚烧厂垃圾渗滤液混合厌氧消化的可行性,进行探索性实验。1 L焚烧发电厂的垃圾渗滤液与37.56 g(有机负荷为30 g VS/L)破碎至1~2 cm的秸秆,在中温(35℃左右)厌氧条件下发酵。发现p H为5.0的渗滤液与未经生物、化学处理的秸秆可以进行混合厌氧消化。实验累积产气141 d,累积产气量达43 749 m L,最高产气量2 590 m L/d。生物气中CH4含量在50%以上,最高时可达70.89%。渗滤液消化前COD为70 472 mg/L;产气开始时,秸秆与渗滤液两相消化液COD为83 896 mg/L;产气基本停止时,消化液COD降至14 245 mg/L,COD去除率达到83.02%。本实验将秸秆纤维的转化利用以及渗滤液的厌氧发酵结合起来,提供了一种以废治废的治理思路,对寻找新的绿色能源具有一定的启发作用。
To explore the straw and incineration plant landfill leachate anaerobic digestion feasibility of exploratory experiments. 1 L incineration plant landfill leachate and 37.56 g (organic load of 30 g VS / L) crushed to 1 ~ 2 cm of straw, at an intermediate temperature (about 35 ℃) under anaerobic fermentation conditions. The leachate with a pH of 5.0 was found to be mixed and anaerobically digested with non-biological, chemically treated straw. The accumulated gas production reached 141 749 m L and the maximum gas production was 2 590 m L / d for 141 days. Biogas CH4 content of more than 50%, up to 70.89%. At the beginning of gas production, the COD of bi-phase digestion of straw and leachate was 83 896 mg / L when the gas production was started. When the gas production was basically stopped, the COD of digestion fluid was reduced to 14 245 mg / L, COD removal rate reached 83.02%. In this experiment, the transformation and utilization of straw fiber and leachate anaerobic fermentation combined to provide a waste treatment and treatment of ideas, to find a new green energy has some inspiration.