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氧化铝涂层砂和未涂层砂除锌效果比较表明 ,氧化铝涂层砂比表面积增大 ,吸附容量增加 ,除锌率与 pH有关 ,当pH接近或 >9时 ,除锌率可达 10 0 % ;石英砂只有在 pH很低时 ,才有一定的去除效果
The comparison of zinc removing effect between alumina coated sand and uncoated sand shows that the specific surface area of alumina coated sand increases and the adsorption capacity increases. The removal rate of zinc is related to pH. When the pH is close or> 9, the removal rate of zinc is up to 10 0%; quartz sand only when the pH is low, have a certain removal effect