改性钢渣吸附除磷机制

Mechanism of Phosphorus Removal by Adsorption of Modified Steel Slag

以钢渣作为吸附剂处理含磷废水,可降低水体的磷含量,减少水体富营养化的发生,同时解决钢渣大量堆积对环境产生的不良影响,实现了废弃物的资源化利用。采用单一钢渣吸附除磷效果不佳,采用不同的改性方法可显著提高钢渣的磷酸盐去除性能。重点介绍了钢渣的碱改性、酸改性、热改性以及与多孔材料相结合改性的改性机理及其对磷酸盐的去除效果,提出目前研究仍存在的问题。

Using steel slag as adsorbent to treat phosphorus containing wastewater can reduce the phosphorus content discharged into water body, reduce the occurrence of eutrophication of water body, solve the adverse impact of steel slag accumulation on the environment, and realize the resource utilization of waste. The phosphate removal performance of steel slag can be significantly improved by different modification methods. In this paper, the modification mechanism and phosphate removal effect of steel slag modified by alkali, acid, heat and combined with porous materials were introduced, and some problems were pointed out.