不同类型岩土对六价铬的抗污染性分析

Analysis on Cr^(6+) pollution resistibility for different soils

对已经受铬污染的、未受铬污染的以及受造纸厂废水污染的不同岩土样,分别用蒸馏水和铬污染水作为淋液进行淋滤试验。受铬污染的岩土会发生二次溶解,导致淋滤液受Cr6+污染。受造纸废液污染的土样对污染水中的Cr6+具有较强的吸附截留作用,其去除Cr6+效果远优于一般岩土,即对Cr6+的抗污染性较好。

Distilled water and the river water polluted by Cr6+ are used to eluviate soil samples which are unpolluted and polluted by wastewater containing Cr6+,wastewater from paper mills respectively.The Cr6+polluted soil will be dissolved again by eluviating and the eluviating water will be polluted by Cr6+.Soil polluted by wastewater from paper mills has the ability to absorb Cr6+,i\^e.there is no Cr6+ in the eluviating water.Its efficiency to remove Cr6+ is higher than common soil,or the Cr6+pollution resistibility is better than common soil.