腐烂柑橘与猪粪混合厌氧发酵产沼气试验研究

摘要

The secondary pH regulation were tested to reactivate the soured anaerobic system treating mixture of rotten citrus fruits and swine manure.Various indexes of biogas and effluent in anaerobic fermentation system were determined.The result showed that the soured anaerobic system treating rotten citrus fruits and swine manure mixture could be reactivated by secondary pH regulation with limewater and C: N regulation with carbamide.The best ratio for rotten citrus fruits and swine manure was 2:1 ,and the optimum inoculum rates was 30％, under which the gas production could last 30 days with TS gas yield of 480.69 mL · g-1.The average methane content of biogas was 51.5％ ,and COD removal rate was 75.14％.%文章以腐烂柑橘果实和猪粪为原料,通过测定厌氧发酵过程中发酵液和沼气的各项指标,探讨二次调节pH值是否可启动橘类比高的厌氧发酵系统及在此条件下腐烂柑橘与猪粪混合厌氧发酵产沼气的最佳配比和最优接种率.研究表明:用石灰水调节pH值,尿素调节其C∶N,二次调节pH值可以重新启动橘粪比高的厌氧发酵系统.在二次调解pH值情况下,腐烂柑橘与猪粪混合厌氧发酵最佳配比为2∶1,接种率30%最为适宜.该组合条件下产气可维持30天,TS产气率为480.69 mL·g-1,平均甲烷含量为51.5%,COD去除率为75.14%.