污泥固化土填埋处置中降解规律的研究  

Study on Degradation Law of Solidified Sludge in Landfill Disposal

作　　者：易进翔[1] 孟琨[2] 薛飞[3] 徐菲[3] 

机构地区：[1]河海大学岩土工程研究所,南京210098 [2]华北水利水电大学环境与市政工程学院,郑州450011 [3]河海大学地球科学与工程学院,南京210098

出　　处：《科学技术与工程》2015年第5期284-288,共5页Science Technology and Engineering

基　　金：国家自然科学基金(51278172);江苏省自然科学基金(BK2012883)资助

摘　　要：污泥固化土中的微生物能够将其中的有机物降解,影响污泥固化土的压缩沉降特性。针对这种问题,开展了7组有机物降解试验,分别从水泥添加量、隔离大气环境、暴露于大气的环境、渗滤液等角度研究污泥固化土的降解规律,获得了有机物降解的动力学模型。结果表明:污泥经固化处理后,其有机物的降解显著降低;水泥添加量相同情况下,有机物在暴露于大气的环境比隔离大气环境中更容易降解;往污泥固化土中添加渗滤液,可以加速有机物的降解。The compression and settlement of solidified sludge might be influenced because of organic degradation from micro-organic activities. A study on the law of organic matter degradation was conducted to obtain the kinetic model for degradation of organic matter. Organic matter degradation tests were divided into seven groups to study separately from the cement content,the isolation of atmospheric environment,the exposure of atmospheric environment,leachate. Results show that the degradation of organic matter significantly reduced after sludge solidification processing. Organic matter became easier degradation in the exposure of atmospheric environment than the isolation of atmospheric environment at the same cement content. Added to the solidification sludge,leachate can accelerate the organic matter degradation.

关 键 词：污泥固化土 填埋 有机物 动力学模型 

分 类 号：TU447[建筑科学—岩土工程]