城市污水处理厂污泥农用研究

徐州某污水处理厂主要负责处理徐州市奎河流域排放的生活污水和工业废水,采用普通活性污泥法工艺,污泥处置与利用方式为外运。笔者以该厂脱水压滤后的污泥为对象,分析了其中植物营养素(N,P,K)、重金属等含量的分布特点,并进行了污泥与稻草混合堆肥试验,观测堆肥过程中温度、pH值、有机质、氮磷钾、硝酸盐氮、氨氮及重金属含量等参数的变化情况,结果表明该厂污泥具有很好的农用前景。

Study on the Sludge for Agricultural Use by Municipal Sewage Treatment Plant

Certain municipal sewage treatment plant in Xuzhou City of Jiangsu Province mainly treated the domestic sewage and the industrial waste water from Kui-river drainage area using the common activated sludge process,and the sludge was transported outside for disposition and utilization.The feasibility of the sludge for agriculture was studied using the dehydrated sludge from this sewage treatment plant as experimental material.The characteristics of the sludge were analyzed,such as total nitrogen,total phosphate,total potassium,organic matter content,organic carbon content and heavy metal distribution.The result showed that the residual sludge had high content of total nitrogen and total phosphate,which indicated that the sludge had a potential use for agriculture.