不同植物的表面流人工湿地系统对污染物的去除效果  

Study on treatment of polluted river water using pilot-scale surface fl ow constructed wetlands system

作　　者：吴建强[1] 丁玲[2] 

机构地区：[1]上海市环境科学研究院,上海200233 [2]河海大学环境科学与工程学院,江苏南京210098

出　　处：《环境污染与防治》2006年第6期432-434,共3页Environmental Pollution & Control

摘　　要：通过对4种不同植物的表面流人工湿地系统处理新沂河河水的中试研究表明,在CODMn和NH4+-N进水浓度相同条件下,香蒲湿地系统出水CODMn平均浓度最低,仅为13.44mg/L;美人蕉湿地系统出水NH4+-N平均浓度最低,仅为1.75mg/L;香蒲和美人蕉湿地系统对CODMn的平均去除率都达到40%以上,而千屈菜和水葱湿地系统都低于30%;美人蕉、香蒲和千屈菜湿地系统对NH4+-N的平均去除率都达到65%以上,而水葱系统则低于60%。综合比较,香蒲和美人蕉湿地系统的净化能力较强。4种植物中水葱耐淹能力最强,完全淹水22d以上依然生长良好;千屈菜耐淹能力最弱,完全淹水7d后就开始枯萎,17d后地上、地下部分全部死亡。In this paper, pilot-scale surface flow constructed wetland （CW） were used to treat polluted river water. The main results show that： while the influent concentrations of CODMn and NH4^＋ -N were 11.69-60. 00 mg/L and 1.37- 20.18 mg/L respectively, the CODMn concentration of effluent with planted Typha latifolia is the lowest, 13.44 mg/L; and the NH4^＋ -N concentration of effluent with planted Canna indica is the lowest, 1.75 mg/L; the CODMn average removal rate of SFW with planted Canna indica and Typha latifolia were higher than 40%, but which with planted Scirpus validus and Lythrum salicaria were lower than 30% ; the NH4^＋ -N average removal rate of SFW with planted Canna indica, Typha latifolia and Lythrum salicaria were higher than 65%, but which with planted Scirpus validus was lower than 60%. It was shown that Typha latifolia and Canna indica have stronger ability for purifying pollutants, whereas Scirpus locustris has strongest ability of overhead flooding, which can resist inundation over 22 days; Lythrum salicaria was found to has the lowest ability of overhead flooding, which only can resist inundation for 7 days.

关 键 词：表面流人工湿地 污染河水 水生植物 耐淹性能 

分 类 号：X52[环境科学与工程—环境工程]