染料废水污染地下水的可渗透性反应墙(PRB)参数试验研究

Experimental study of permeable reactive barrier(PRB)parameters for groundwater contamination by dye wastewater

染料废水常具有高浓度、高色度、成分复杂、难降解、难生化等特点,一直是废水处理的难点。被染料废水污染的地下水,由于其治理修复受到地质与水文地质条件的影响,其修复难度较大。近年来,可渗透反应墙(permeable reactive barrier, PRB)技术是目前迅速发展的一种原位修复技术。本研究以染料废水污染的地下水为研究对象,通过室内试验进行了PRB墙填料的筛选与配比试验,最终确定活性炭的添加比例为0.5‰~1‰的质量配比,铁粉的添加比例为489%的质量比,在此基础上,进行了可渗透性反应墙参数设计。

Dye wastewater often has the characteristics of high concentration,high chroma,complex composition,difficult degradation and difficult biochemistry,which has always been the difficulty of wastewater treatment.The remediation of groundwater polluted by dye wastewater is difficult because it is affected by geological and hydro-geological conditions.In recent years,permeable reactive barrier(PRB)technology is a rapidly developing in-situ repair technology.This study takes the groundwater polluted by dye wastewater as the research object,carries out the screening and proportion test of PRB wall filler through indoor test,finally,the added proportion of activated carbon is determined to be 0.5%o~1%o by mass,and the added proportion of iron powder is determined to be 489%by mass.On this basis,the parameters of permeable reaction wall are designed.