MgCl2溶液处理铸造业中水玻璃旧砂废水的研究

目前对于铸造业产生的水玻璃旧砂废水,主要的处理方法是先加酸降低其pH值,再加水处理剂,处理产生的废水。传统的方法只是将MgCl2作为水处理剂以降低污水的浊度,很少拿它作为降低pH值去使用,将MgCl2制成饱和溶液,用于处理水玻璃旧砂废水,达到了降低pH值和降低污水浊度的要求。

At present,for the used water-glass sand waste water produced by casting industry,the main treatment method is to add acid to reduce pH value of the waste water,and then add water treatment agent to treat the sewage.The traditional method is only used magnesium chloride as a water treatment agent to reduce the turbidity of sewage,rarely used it to lower pH value.The saturated magnesium chloride solution was used to treat the water-glass wastewater for lowering pH value and reducing turbidity of sewage at the same time.