建筑工程废弃泥浆快速泥水分离试验研究

发布时间：2018-05-07 08:37

本文选题：建筑泥浆 + 快速泥水分离　；参考：《东南大学学报(自然科学版)》2016年02期

【摘要】：为了研究建筑工程废弃泥浆的快速泥水分离性能、提高泥浆泥水分离速率,采用化学絮凝的方法对建筑废弃泥浆快速泥水分离性能进行了试验研究.分析了多种无机絮凝剂、有机絮凝剂及复合絮凝剂对建筑工程泥浆的快速泥水分离性能的影响,得到了絮凝剂种类、添加量与泥水分离效果的关系.结果表明:有机絮凝剂对建筑泥浆具有较好的快速泥水分离效果,泥水分离后泥浆含水率小于50%,而无机絮凝剂和复合絮凝剂的泥水分离效果较差;从泥浆的组成及性质分析可知,加入的有机絮凝剂与泥浆颗粒之间除了有压缩双电层作用外,絮凝剂还起到吸附架桥的作用;经有机絮凝剂分离的上清液中,TN和TP含量达到《城镇污水处理厂污染物排放标准》的一级A及COD_(cr)一级B排放标准.
[Abstract]:In order to study the rapid mud water separation performance of construction waste mud and improve the slurry slurry separation rate, a chemical flocculation method was used to study the rapid mud water separation performance of construction waste mud. The effects of various inorganic flocculants, organic flocculants and composite flocculants on the rapid slurry separation performance of construction engineering mud were analyzed. The relationship between the types of flocculants, the amount of flocculants and the separation effect of mud water was obtained. The results show that the organic flocculant has a better rapid separation effect on the building mud, the moisture content of the mud is less than 50%, but the inorganic flocculant and the composite flocculant have a poor separation effect. From the analysis of the composition and properties of the slurry, it can be seen that the addition of organic flocculant and mud particles has the function of adsorption and bridge in addition to the effect of compression double electric layer. The contents of TN and TP in the supernatant separated by organic flocculants reached the first class A and COD C discharge standards of the pollutant discharge standard of the municipal wastewater treatment plant.
【作者单位】：东南大学土木工程学院;东南大学混凝土及预应力混凝土结构教育部重点实验室;江苏大学环境与安全学院;
【基金】：“十二五”国家科技支撑计划资助项目(2013BAC05B02) 江苏省普通高校研究生创新计划资助项目(KYLX15_0083) 南京市科技发展计划资助项目(2014sc312035)
【分类号】：X799.1

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