不同类型人工湿地处理富营养化湖水的中试对比研究

[Pilot-scale comparison research of different constructed wetland types to treat eutrophic lake water].

作者信息

Nie Zhi-Dan, Nian Yue-Gang, Jin Xiang-Can, Song Ying-Wei, Li Lin-Feng, Xie Ai-Jun

机构信息

Research Center for Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

出版信息

Huan Jing Ke Xue. 2007 Aug;28(8):1675-80.

PMID:17926392

Abstract

Comparison research of different constructed wetland types to treat lake Wulihu water was carried out. Under the condition of the loading rates 0.8 m3/(m2 x d), the removal efficiencies of the vertical flow wetland (VFW), subsurface flow wetland (SFW) and free surface wetland(FSW) had the following results: To ammonia nitrogen (NH4(+)-N) the average removal rates were 33.2%, 27.4% and 14.1%, respectively; To total nitrogen (TN) the average removal rates were 52.3% , 50.1% and 19.2%, respectively; To total phosphorus (TP) the average removal rates were 58.8%, 57.9% and 26.3%, respectively; To permanganate index the average removal rates were 37.2%, 38.3% and 14.8%, respectively; To chlorophyll a (Chl-a) the average removal rates were 86.9%, 96.1% and 55.3%, respectively. Obviously, VFW and SFW are more effective than FSW at treating eutrophicated water such as Lake Wulihu which with characters of low organically pollution and with high nitrogen and phosphorus pollution, and the VFW is the most effective on the removal of NH4(+)-N, TN and TP. SFW is the most effective on the removal of permanganate index and Chl-a. The effluent stability of VFW is better than SFW, and the SFW is better than FSW.

摘要

开展了不同类型人工湿地处理五里湖水的对比研究。在负荷率为0.8立方米/（平方米·天）的条件下，垂直流湿地（VFW）、潜流湿地（SFW）和自由表面湿地（FSW）的去除效率结果如下：对氨氮（NH4(+)-N）的平均去除率分别为33.2%、27.4%和14.1%；对总氮（TN）的平均去除率分别为52.3%、50.1%和19.2%；对总磷（TP）的平均去除率分别为58.8%、57.9%和26.3%；对高锰酸盐指数的平均去除率分别为37.2%、38.3%和14.8%；对叶绿素a（Chl-a）的平均去除率分别为86.9%、96.1%和55.3%。显然，对于像五里湖这样具有低有机污染、高氮磷污染特征的富营养化水体，VFW和SFW在处理效果上比FSW更有效，且VFW对NH4(+)-N、TN和TP的去除效果最佳。SFW对高锰酸盐指数和Chl-a的去除效果最佳。VFW的出水稳定性优于SFW，SFW优于FSW。