
第39卷第1期 2017年2月
土木建筑与环境工程
Journal of Civil,Architectural &.Environmental Engineering
doi:10.11835/j.issn.1674-4764.2017.01.019
王月香1.2,顾欢达1,陈茂林3
(1.苏州科技大学土木学院,江苏苏州215011;2.南京工业大学土水工程博士后流动站,南京211186;3.苏州淡林环境科技有限公司,江苏苏州215129)
Vol. 39 No. 1 Feb.2017
摘要:固化污泥是一种新型填理场底部防渗阻滞材料,为论证其防渗阻滞作用的有效性,需进行移时的相关参数。为解决该问题,用柔性壁渗透试验代替传统土柱试验。渗滤液中污染成分较多,取含量较高且较易穿透的污染物即氟离子作为典型污染物,首先进行穿透试验获得迁移参数,然后结合二维有限元法研究分析其在防渗阻滞层及周边岩土环境中60a内的运动迁移范国、浓度分布情况,并对比分析未设防渗阻滞层的情况。研究表明,在填理场底部设置固化污泥防渗层对于以氟为代表的阴性污染物有较好的延迟阻滞作用。由于阳性污染物的穿透能力较阴性污染物弱,因而固化污泥防渗层对重金属等阳性污染物也应具有较强的阻滞作用,从而能进一步延迟填理场渗滤液对周边环境的污染。
关键词:固化污泥;填埋场防渗;氟离子;迁移阻滞;数值分析
中图分类号:X705
文献标志码:A
文章编号:1674-4764(2017)01-0132-08
Numerical analysis of the postponing effect of solidified
sludge as a new type of landfill liner material
WangYuexiangl,2,GuHuanda',ChenMaolin
(1. Suzhou University of Science and Technology, Suzhou 215011.Jiangsu, P. R. China:
2. Nanjing Technolgy University.Nanjing 211186, P. R. China
3. Suzhou Danlin Environmental Engineering Limited Corporation, Suzhou 215129,Jiangsu, P. R. China)
Abstract:The solidified sludge as a new type of liner material should be at the bottom of municipal solid waste landfill site to prevent the contamination of the pollutant leakage. The hydrodynamic dispersion test was conducted to investigate the postponing effect of solidified sludge. It was very difficult to obtain hydrodynamic dispersion parameters of sludge solidified layer with low permeability by the existing column tests and methods.The flexible wall parameter was proposed and improved to solve the problem.Because of thehigh concentration and strongpenetratingpower,fluorine ion waschosenas the typical representative. The hydrodynamic dispersion parameters could be calculated by the breakthrough curve of
收稿日期:2016-03-04
基金项目:国家自然科学基金(51378327、51378118、51508369),江苏省自然科学基金(BK20150289),江苏省建设系统项
目(2016ZD26),苏州科技大学科研启动项目(331531102)
作者简介:王月香(1977-),女,博士后,主要从事环境岩土工程研究,(E-mail)wyxcjy@sina.cn。 Received:2016-03-04
Foundation item: National Natural Science Foundation of China (No. 51378327,51378118,51508369),Jiangsu Provincia
Natural Science Foundation (No.BK20150289),Jiangsu Architecture System Foundation (No. 2016ZD26),SUST Research Approval Foundation(No. 331531102)
Author brief: Wang Yuexiang(1977), postdoctor, main research interest: geoenvironment,(E-mail)wyxcjy@sina. cn.