化学调理对污泥脱水性能影响的荟萃分析

Meta-analysis of Chemical Conditioning on Sludge Dewaterability

在知网中检索230篇同行评议文章,对符合标准的30篇研究进行荟萃分析,以系统性评价化学调理对污泥脱水性能的影响。结果表明,污泥种类是影响污泥脱水性能指标——污泥比阻和毛细吸水时间的最关键因素。有机和无机调理药剂最佳投加量分别为0.1%~2%和2%~10%,这对新型污泥调理剂的开发及工艺优化具有一定借鉴意义。

In this study,230 peer-reviewed articles were retrieved from CNKI,and 30 studies that met the criteria were meta-analyzed to systematically evaluate the effect of chemical conditioning on sludge dewatering performance.Results showed that the sludge type was the most important factor affecting the sludge dewatering performance indexes,namely sludge specific resistance and capillary water absorption time.Optimal dosages of organic and inorganic conditioning agents were 0.1%-2% and 2%-10%,respectively.It is of significance for the development of new sludge conditioning agents and process optimization.