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蚯蚓生物滤池对小城镇污泥处理效果

Keywords: 污泥处理,蚯蚓生物滤池,污泥稳定性

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Abstract:

针对小城镇污泥的处理问题,提出了蚯蚓生物滤池解决方案,为此在实验中设置了无蚯蚓对照组,并对污泥的稳定性、污泥性状、蚯蚓与微生物的协同作用以及污泥含有的各种元素存在状态进行了研究,通过蚯蚓生物滤池处理后污泥有机质含量平均相对减少量为11.1%,溶解性化学需氧量(SCOD)增加,滤液中氨氮(NH3-N)含量由20.6~23.9mg/L降至1.9~4.6mg/L、滤液中硝态氮(NO3--N)含量由0.2~9.5mg/L升高到42.0~50.8mg/L,因此,实验结果表明,蚯蚓生物滤池能显著提高污泥的稳定性,改善污泥脱水性能,有利于污泥后续处理。

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