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环境化学 2015

无机复合调理剂对污泥脱水性能的影响

刘欢,李亚林,时亚飞,李野,何姝,杨家宽

Keywords: 污泥调理,无机复合调理剂,骨架构建体,脱水性能

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Abstract:

针对污泥的固化填埋或建材化利用等后续处置方式,采用FeCl3与生石灰、粉煤灰两种骨架构建体为主要成分的无机复合调理剂对市政污泥进行调理.通过污泥真空抽滤、离心脱水及比阻测定实验,分别确定FeCl3、生石灰、粉煤灰的优化投加量为2.0g·L-1、20.0g·L-1、30.0g·L-1.在优化投加量下,污泥比阻可降到0.27×109s2·g-1以下,降低率超过93%,脱水泥饼的含水率可降至73%左右,相应的脱水率为77%-79%.

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