城市污泥特性研究与园林绿化利用前景分析

The Study on Characteristics of Municipal Sewage Sludge and Analysis of the Prospects for Landscaping Use

城市污泥的再利用是普遍认可的一种污泥处理途径,文章对天津市某污水处理厂经过碱化去蛋白质处理后的剩余污泥进行了采样和成分分析。结果表明,该污泥为中性,pH6.78,含水率较高为72.46%;污泥中有机质、氮、磷、钾含量丰富;污泥中重金属的含量较低,均符合国家农用污泥中污染物控制标准。以此为基础结合国内外污泥处理的研究现状,论述了我国园林绿地污泥的利用进展及其应注意的事项,并对污泥的园林绿化利用价值及其应用前景作了分析和展望。

The reuse of municipal sewage sludge(MSS) is one of the generally accepted ways for sludge treatment. This paper analyzed the research results on the characteristics of one typical kind of MSS in Tianjin municipal wastewater treatment plant. The results showed that the pH of sludge is 6.78;the concentration of moisture is 72.46%;and organic matter nitrogen,Phosphorus,potassium and other nutrients are rich in Sludge,The concentration of heavy metals is also very low,which are in line with national pollution control standards for agricultural sludge. Bases on it,Combines of sludge treatment of domestic-oriented Research Status,discusses the progress of MSS using in landscaping and what should pay attention to,analyses and prospects the use of the value of sludge in landscaping and its application prospects.