组合材料渗透反应墙对硝基苯污染地下水的修复研究

利用渗透反应墙技术修复硝基苯污染的地下水, 开发出适合处理硝基苯污染地下水的新型组合渗透反应墙材料。研究了新型组合材料作为渗透反应墙体的使用安全性;拟反应槽对渗透反应墙处理硝基苯污染地下水的效果进行 了初步研究。结果表明:新型组合材料的使用是安全的, 经组合材料处理的废水不会产生二次污染。最佳模拟柱条件为铁碳 比5 ∶1, pH 值 4 ～5, 铁屑粒径 0. 1 ～2. 0 mm, 反应时间60 min, 硝基苯的去除率可达到 94. 2% 。渗透反应墙在最佳条件下对硝基苯的去除率可达到93. 26% 。

Research on Remediation of Nitrobenzene Contaminated Ground-Water with Combination Materials of Permeable Reactive Barrier

A new kind of combination material of permeable reactive barrier(PRB) was developed for treating nitrobenzene contaminated ground-water. The safety of the new combination material was studied. The best parameters of the combination material of PRB were optimized. The treatment effect of the groundwater contaminated with nitrobenzene was studied preliminary in simulation tank. The results show that the combination material was safe, and no secondary pollution was produced when the waste water was treated by the combination material. The best reaction conditions was that the ratio of Fe ∶C was 5 ∶1, the pH was 4 to 5, the iron filling diameter was between 0. 1mm and 0. 2mm, the reaction time was 60 min, and the removing rate of nitrobenzene was reached to 94. 2% in the optimized column conditions. The removing rate of nitrobenzene was 93. 26% under the best simulation tank conditions.