武汉地区建筑废弃泥浆泥水分离试验研究

Experiment on separation of mud and water from construction waste mud in the Wuhan area

摘要:

针对武汉地区不同地层、不同工艺产生的建筑工程废弃泥浆，通过光谱仪分析了其主要化学成分，并通过过滤、真空抽滤、离心以及不同絮凝剂的正交试验，以上清液浊度和清液率为主要指标对废弃泥浆泥水分离效果进行评价。试验发现：废弃泥浆固相颗粒以有机质为主；采用过滤方式取得的清液浊度较低，但清液率较少；采用真空抽滤方式处理废弃泥浆可以获得较多的上清液；采用离心方式能处理除含特细颗粒外的多数废弃泥浆；正交试验表明阳离子絮凝剂（PAM）处理废弃泥浆效果较好。

Abstract:

The main chemical components of construction engineering waste mud produced by different formations and different processes in the Wuhan area were analyzed by spectrograph， and the separation effect of waste mud was evaluated by orthogonal tests of filtration， vacuum filtration， centrifugation and different flocculants with the turbidity and clear liquid rate as the main evaluation indexes. The results showed that the waste mud was mainly composed of organic substance； the filtrate obtained by filtration had lower turbidity but less clear liquid rate； more supernatant could be obtained by vacuum filtration； most of the waste mud except for ultra-fine particles could be treated by centrifugation； the orthogonal test showed that better effect was obtained with cationic flocculant （PAM） treating waste mud.