摘要： 研究了单独Fe（Ⅱ）、单独CaO₂以及CaO₂同步氧化Fe（Ⅱ）对人工模拟废水中磷的去除效果。结果表明：Fe（Ⅱ）与磷酸盐反应生成的物质颗粒细小，是导致Fe（Ⅱ）除磷效果不佳的重要原因；CaO₂同步氧化Fe（Ⅱ）对磷的去除率显著提高。50 mg/L CaO₂同步氧化Fe（Ⅱ）体系90 min后对磷去除率为82.38%，远大于相同时间内单独Fe（Ⅱ）对磷去除率（9.80%）与单独CaO₂对磷去除率（24.24%）之和（34.04%）。

关键词: 过氧化钙, 亚铁离子, 磷酸盐, 粒径分布

Abstract: The research on the removing effects of individual ferrous ions,individual calcium peroxide and CaO₂ syn-chronously oxided Fe(Ⅱ) on the removal of phosphorus from artificially simulated wastewater has been implemented. The results show that the insoluble particles formed by the reaction of Fe(Ⅱ) with phosphate are tiny,which is the main cause for the poor phosphorus removing effect. The removing rate of phosphorus by CaO₂ synchronously oxida-tion Fe(Ⅱ) is significantly improved. After 50 mg/L of CaO₂ has synchronously oxided Fe(Ⅱ) for 90 min,the remov-ing rate of phosphorus is 82.38%,which is far higher than the summation of the phosphorus removing rates(34.04%) by individual Fe(Ⅱ)(9.80%),plus the phosphorus removing rate by individual CaO₂(24.24%).

Key words: calcuim peroxide, ferrous ion, phosphate, particle size distribution

中图分类号: 

• X703