含砷污泥的固化处理

废水处理后的污泥含有大量的有害物质，其中的砷及其化合物对环境危害极大，因此，对含砷污泥的安全处理与处置研究，有重要的现实意义。对固体废物的处理有物理、化学和生物的多种方法，综合比较了各种方法后，本文提出应用包括化学和物理反应的水泥固化方法对含砷污泥进行处理。对比研究了不同水泥的性能后，选择了普通硅酸盐水泥和矿渣硅酸盐进行实验，通过对比浸出液的含As浓度发现矿渣硅酸盐水泥的固化效果较好。

Treatment of Arsenical Sludge Solidification

There are so many nocuous materials in the sludge from the treatment of waste water. The arsenic in the sludge is very dangerous, so it is important to find the methods for the treatment and disposal of the arsenical sludge. The methods to deal with nocuous wastes are discussed. And the ways using cement to solidify the arsenical sludge is found useful. Through comparing the characteristics of several cements, the slag silicate cement and the Portland cement are chosen in the experiments. Furthermore, the research also shows that the slag silicate cement is better than Portland cement.