化工进展Issue(10)：2790-2794,5.DOI:10.3969/j.issn.1000-6613.2014.10.045
不同絮凝剂对剩余污泥水解和脱水特性的影响
Effects on hydrolysis and dewatering performance of excess sludge by different flocculants
摘要
Abstract
This paper studied the effects on hydrolysis and dewatering performance of excess sludge by inorganic and organic flocculants. Adding 20g/L CaO and CPAM (cationic polyacrylamide)to adjust the excess sludge,the dissolution of organic matter were described as below:the dissolubility of solution chemical oxygen demand(SCOD)was CPAM>CaO>blank. The dissolubility of soluble protein(SPN)was CPAM>CaO>blank. The dissolubility of soluble polysaccharide(SPS)was CaO>CPAM>blank. Changes in the indicators of dewatering performance,specific resistance to filtration (SRF) and the filter cake containing solid rate were described as the following:the basic change of SRF was CPAM<CaO<blank, and the added CaO made SRF reach the minimum value (0.91×1013m/kg)on the 4th day,and the added CPAM made SRF reach the minimum value (0.71×1013m/kg)on the 7th day. Both results were considered as difficult dewatering. The change of filter cake containing solid rate was CPAM>CaO>blank after the 4th day. From the dissolution of SCOD、SPN,SPS,the change of SRF and filter cake containing solid rate,it was concluded that adding the same concentration of CaO and CPAM were more beneficial for hydrolyzing and dewatering.关键词
无机絮凝剂/有机絮凝剂/剩余污泥/脱水性能/水解/有机质Key words
inorganic flocculants/organic flocculants/excess sludge/dewatering performance/hydrolysis/organic matter分类
资源环境引用本文复制引用
苑宏英,王小佩,王亭,牛四芳,祁丽..不同絮凝剂对剩余污泥水解和脱水特性的影响[J].化工进展,2014,(10):2790-2794,5.基金项目
天津市科技计划（13CEDGX03100）、天津市水质科学与技术重点实验室开放研究基金（TJKLAST-2011-11）及天津市滨海新区科技创新专项资金资助“十大战役”重大科技支撑（2011-BH140003）项目。 （）
