PRB技术在垃圾渗滤液污染地下水修复中的可行性研究

Feasibility Study of Mixture PRB Technology in Situ Remediation of Groundwater Polluted by Landfill Leachate

以被垃圾渗滤液污染的地下水为研究对象,分别用天然沸石、陶粒、活性炭、炉渣、零价铁作为反应介质,设计了5种地下可渗透反应器(PRB),分别为反应器A、B、C、D和E,对PRB技术治理污染地下水的可行性和有效性进行实验模拟研究。实验结果表明:反应器A～E对COD的去除率为82.36%～87.29%,NH4+的去除率较低,为12.91%～29.59%,说明PRB技术治理渗滤液污染的地下水有一定的可行性,但技术有待继续深入研究。

Five reaction media zero-valent iron （ZVI）, activated carbon, zeolites, ceramsite, slag were used to design five kinds of permeable reactive barrier （PRB）, viz. reactors A,B,C, D and E for studying the feasibility and the efficiency of the PRB technology in the remediation of leachate-polluted groundwater. The results indicated that the COD removal ratios of the reactor A,B C, D and E were from 82.36~87.29% respectively. The removal ratio of the ammonium ranged from 12.91~29.59%, which showed that PRB technology was an efficient method for the treatment of leachate-contaminated groundwater, and yet is expected to do further research.