不同预处理技术对污泥深度脱水的影响

Influence of different pretreatment technologies on deep dewatering of sludge

为有效解决因污水污泥排放引发的日益严重的环境问题,围绕近年来国内外城市污泥深度脱水技术展开综述,重点讨论了物理法、化学法、生物及其他联合技术对污泥深度脱水的作用机理,并对其脱水效果及不同脱水方法的优缺点进行比较和分析,旨在为污泥处理与处置技术的持续发展提供理论参考。指出针对复杂多变的污泥,明确其理化性质和动态变化特征,研发高效低耗的调理技术,确立准确的分析方法是今后发展的重要方向。

In order to effectively solve the increasingly serious environmental problems caused by sewage sludge emissions,the deep dewatering technology of urban sludge was reviewed at home and abroad in recent years,focusing on the mechanism of physical,chemical,biological and other combined technologies on deep dewatering of sludge,the dewatering effect,advantages and disadvantages of different dehydration methods were also compared in detail.It provides a theoretical reference for the sustainable development of sludge treatment and disposal technology.It is pointed out that for complex and changeable sludge,it is an important direction for future development to clarify its physical and chemical properties and dynamic change characteristics,develop efficient and low-consumption conditioning technology,and establish accurate analysis methods.