无机调理剂与表面活性剂联合调理对污泥脱水性能的影响
2014年3月 CIESC Journal ·1068· March 2014第65卷 第3期 化 工 学 报 V ol.65 No.3
无机调理剂与表面活性剂联合调理对污泥脱水性能的影响
洪晨，邢奕，王志强，张坤，司艳晓
（北京科技大学土木与环境工程学院，北京 100083）
摘要：研究了CaO 、PAFC 联合表面活性剂预处理对污泥脱水性能的影响。以污泥滤饼含水率和比阻（SRF ）作
为评价污泥脱水性能的指标，通过测定污泥调理过程中胞外聚合物（EPS ）含量、Zeta 电位的变化来阐明污泥脱
水性能的变化。实验结果表明，十二烷基二甲基苄基氯化铵（1227）的加入导致上清液中EPS 含量发生变化，有
效降低了SRF 和滤饼含水率，提高污泥脱水性能。CaO 、PAFC 和表面活性剂的联合调理污泥比单独使用表面活
性剂的效果更好，CaO 、PAFC 的投加不仅改善污泥脱水性能，并有助于减少表面活性剂的用量。污泥上清液中
EPS 及其各组分含量与污泥滤饼含水率、SRF 均有较高的相关性，对污泥的脱水性能有重要贡献。实验中确定的
最佳污泥调理条件是CaO 投加量为66.67 mg ·(g DS)?1、PAFC 投加量为33.33 mg ·(g DS)?1和表面活性剂投加量
为56.25 mg ·
(g DS)?1，污泥滤饼含水率和SRF 分别降至69.41%、0.294×1013 m ·kg ?1。
关键词：废物处理；混凝；表面活性剂；污泥；胞外聚合物；脱水性能
DOI ：10.3969/j.issn.0438-1157.2014.03.042
中图分类号：X 705 文献标志码：A 文章编号：0438—1157（2014）03—1068—08
Dewatering performance of sludge modified by inorganic conditioner
combined with surfactant
HONG Chen, XING Yi, WANG Zhiqiang, ZHANG Kun, SI Yanxiao
(School of Civil and Environmental Engineering ，University of Science and Technology Beijing ，Beijing 100083, China )
Abstract ：Dewatering performance of sludge modified by CaO and PAFC combined with surfactant is investigated in this study. Water content of dewatered sludge and specific resistance of filtration (SRF) are used to evaluate the sludge dewaterability, and the change of sludge dewaterability is explained by measuring variation of extracellular polymeric substance (EPS) content and Zeta potential in the conditioning process. The results show that adding surfactant can change EPS content in the filtrate, and reduce SRF and water content of dewatered sludge, and improve dewatering performance of sludge. The effect of CaO and PAFC combined with surfactant is better than individual surfactant. The addition of CaO and PAFC can both improve sludge dewaterability and contribute to reduce the addition of surfactant. The content of EPS and its components in sludge filtrate has a high correlation with the water content of dewatered sludge and SRF, and an important effect on the detwatering performance of sludge. The optimal conditions determined by experiment is that the addition amount of CaO,
2013-06-收到初稿，212013-11-收到修改稿。11 联系人：邢奕。第一作者：洪晨（1984—），男，博士研究生。 基金项目：国家自然科学基金项目(51104009)；北京市科技新星计划项目(Z111106054511043)；北京市优秀人才培养资助项目(2012D009006000003)；中央高校基本科研业务费专项资金资助项目(FRF-TP-12-011B)；昆明市科技计划项目 (2012-02-09-A-G-02-0001)； 广东省教育部产学研结合项目 (2011B090400629)。 Received date : 2013-06-21.
Corresponding author : XING Yi, associate professor, xingyi@ustb.
edu. com
Foundation item : supported by the National Natural Science Foundation
of China (51104009), Beijing Nova Program (Z111106054511043), Beijing
Outstanding Talent Nurture and Funding Scheme (2012D009006000003), the
Fundamental Research Funds for the Central Universities (FRF-TP-12- 011B)
and the Kunming Science and Technology Program (2012-02-09-A-G-
02-0001).