饮用水过滤中的除铝实验研究

Aluminum Removal Testing in Drinking Water Filtration

通过饮周水除铝的生产实验，主要研究了过滤过程中浊度对水中余铝的影响。提出了饮用水除铝可以分为降低溶解铝和去除颗粒铝两种途径。过滤水的余浊和余铝在一定范围内呈线性相关关系，除浊的同时可去除颗粒铝。当控制过滤水的浊度分别为７ＮＴＵ和０．１ＮＴＵ时，过滤水的余铝可分别控制在０．０５ｍｇ／Ｌ和０．０２ｍｇ／Ｌ。

The effect of turbidity on residual aluminum in water was studied through aluminum removal tests in the production of drinking water. Two ways are proposed for the removal of aluminum from drinking water, i. e., by reducing dissolved aluminum and by removing aluminum solids. A linear relationship to a certain extent was shown between residual turbidity and residual aluminum in filtered water. Aluminum solids can be removed while turbidity is removed. When the turbidity of the filtered water is controlled at 7 NTU and 0.1 NTU respectively, the residual aluminum in the filtered water can be controlled at 0.05 mg/L and 0. 02mg/L accordingly.