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耐酸厌氧消化污泥处理餐厨垃圾

Keywords: 耐酸厌氧消化污泥,低pH值,餐厨垃圾,厌氧消化

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Abstract:

采用耐酸驯化的厌氧消化污泥处理餐厨垃圾,在酸性条件下(pH=4.5),对实验装置容积负荷从1.0kgVS/(m3·d)分9次逐级增加到5.0kgVS/(m3·d)的过程进行了跟踪监测,并较深入地研究了驯化污泥代谢活性和处理效果。实验结果表明,pH4.5的耐酸厌氧消化污泥,最佳投加负荷约为4.5kgVS/(m3·d),此负荷下容积产气率,CH4含量平均值均达最大,分别为1.68m3/(m3·d),75.0%。耐酸厌氧消化装置持续增料运行46d,产甲烷菌仍能保持较高的活性,其COD去除率范围为40.4%~75.0%,仍能保持pH7.2时处理效果的65.0%~91.8%,表明在低pH、低碱度下实现稳定的产甲烷过程是可行的。

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