曝气生态浮床-渗透性反应墙组合工艺水质净化特性研究

Characteristic of combined EAFB-PRB process for water purification

通过中试研究,考察了EAFB-PRB组合工艺的动态水质净化特性。结果表明,在3种对比实验工况条件下,组合工艺在HRT为4.2 d时比较适宜,此时TN、TP和COD的平均去除率分别为42.15%、90.48%和61.71%;组合工艺对COD、TP的去除主要发生在浮床区,而PRB区是脱氮的主要单元,组合工艺弥补了单项技术的不足,提高了对污水水质的净化效果。

The dynamic pilot study on purification characteristic of integrated ecological aeration floating bed-permeable reactive barrier（EAFB-PRB） process for polluted water was carried out.Three different operation parameters were tested.Results show that the optimum hydraulic retention time（HRT） is 4.2 days,the removal efficiencies of TN,TP and COD are 42.15%,90.48% and 61.71%,respectively.The COD and TP are removed in EAFB,and TN is removed in PRB.The integrated process makes up for the disadvantage of single technology and enhances the purification effect for polluted water.