污泥固化土填埋处置中降解规律的研究

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。

Study on degradation law of solidified sludge in Landfill Disposal

: 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 theScementScontent,Sanaerobic,Saerobic,Sleachate. Results show that the degradation ofSorganic matterSsignificantly reduced after sludgeSsolidification processing. Organic matterSbecame easier degradation in theSaerobicSenvironment thanSanaerobicSenvironment at the sameScementScontent. Added to theSsolidification sludge, leachate can accelerate theSorganic matterSdegradation.