城市剩余污泥脱水性能指标的相关性研究  

Correlation Analysis of Evaluation Indexes of Sewage Sludge Dewatering Performance

作　　者：张梅杰[1] 左剑恶[1] 李晓霞[1] Goulven Inial 

机构地区：[1]清华大学环境学院,环境模拟与污染控制国家重点实验室,北京100084 [2]威立雅环境公司,北京100004

出　　处：《环境科学与技术》2016年第12期169-172,183,共5页Environmental Science & Technology

基　　金：基金项目:清华大学(环境学院)-威立雅环境先进联合研究中心支持(20093000328)

摘　　要：选取5种阳离子聚丙烯酰胺(CPAM)对城市剩余污泥调理、4种调理方案进行板框压滤试验,测定调理后的污泥比阻(SRF)、污泥毛细吸水时间(CST),以及板框压滤后的泥饼含水率,采用数理统计的方法对SRF、CST和泥饼含水率进行线性回归分析。结果表明,在同一种药剂调理下,CST和SRF具有显著的线性相关性,可用CST代替SRF确定药剂最佳投药量。SRF、CST分别与板框压滤后的泥饼含水率之间存在明显的线性关系(R^2=0.92,R^2=0.99),能有效表征实际处理过程中污泥的脱水效率。This paper related to dewatering of surplus sewage sludge with the focus on correlation analysis on several indexes,involving a lab experiment of the sludge conditioning by use of five sorts of cationic polyacrylamide（CPAM）followed by plate-frame pressure filtration,and then measuring of the indexes including specific resistance to filtration（SRF）,capillary suction time（CST）and sludge cake（SC）moisture content. Mathematical statistics method was used for linear regression of the indexes：SRF,CST and SC moisture content,the result of which showed that in the case that sludge conditioned by same one CPAM,CST was linear-correlated to SRF,so that the data of CST,instead of SRF,could be used to determine the optimal dosage of CPAM added for sludge conditioning. In addition,there existed a remarkably correlation among SRF,CST and SC moisture content（R2=0.92,R2=0.99）,which could be applied to the characterization of the sludge dewatering efficiency in the practical operation.

关 键 词：污泥比阻 毛细吸水时间 板框压滤 泥饼含水率 相关性分析 

分 类 号：X705[环境科学与工程—环境工程]