Abstract:

A field experiment on the removal of mixed organic compounds by constructed wetland has been conducted, using two volatile organic compounds benzene and 1, 4-dichlorobenzene, and two semi-volatile organic compounds nitrobenzene and di-butyl phthalate (DBP) as target compounds.The results show that the average removing rate for benzene by constructed wetland is around 88%, and the average removing rate for 1, 4-dichlorobenzene is around 92%, the average removing rate for nitrobenzene is from 46.85% to 61.13%, and the average removing rate for DBP is from 65.75% to 80.96%.The impact load experiments show that when the one-off highly-concentrated influent is introduced into the constructed wetlands, shale ceramisite could intercept 90.4% of benzene, and gravel could inte-rcept 83.3% of 1, 4-dichlorobenzene.The interception capacity of yellow sands constructed wetland for benzene are equivalent to that for 1, 4-dichlorobenzene.Their interception rates are 91.4% and 90.0% respectively.The interception capacity for nitrobenzene is equivalent to that for DBP.Their interception rates are 60.5% and 61.3%, respectively.

Key words: constructed wetland, organic compound, field experiment

摘要：

以苯、1，4-二氯苯、硝基苯和邻苯二甲酸二丁酯（DBP）为目标有机化合物，开展人工湿地去除混合溶液中有机化合物的现场试验。结果表明，人工湿地系统对苯的平均去除率为88%左右，对1，4-二氯苯的平均去除率在92%左右，对硝基苯的平均去除率为46.85%~61.13%，对DBP的平均去除率为65.75%~80.96%。冲击负荷试验表明，在一次性高浓度进水条件下，页岩陶粒人工湿地能拦截90.4%的苯；砾石人工湿地能拦截83.3%的1，4-二氯苯；黄沙人工湿地对苯和1，4-二氯苯的拦截能力相当，拦截率分别为91.4%和90.0%，对硝基苯和DBP的拦截能力相当，拦截率分别为60.5%和61.3%。

关键词: 人工湿地, 有机化合物, 现场试验

CLC Number: 

• X703.1