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首页> 外文会议>International Conference on Wetlands amp; Remediation Salt Lake City, Utah, November 16-17, 1999 >Municipal wastewater treatment and utilization using vertical-flow constructed wetlands
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Municipal wastewater treatment and utilization using vertical-flow constructed wetlands

机译：利用垂直流人工湿地处理和利用市政废水

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Two pilot-scale plants (in the cities of Beijing and CHengdu) were studied using vertical-flow constructed wetlands (VFCW) to treat municipal wastewater over a 2-year period. The results show that VFCW treatment system had high and steady removal efficiency for municipal wastewater. The removal percentages for BOD_5, total nitrogen, and fecal coliform were 96percent, 47percent, and 97percent, respectively. Effluent concentrations of COD, BOD_5 and SS were less than 60 mg/L, 20 mg/L and 20mg/L, respectively. The results also show that the hydraulic and organic loading rates of vertical-flow constructed wetlands were 208approx288m/a and 14.9approx26.6 kg BOD_5/m~2.a, respectively. Treated effluent was then used as water source for agricultural irrigation and fish farms. It did not result in any secondary environmental pollution on plants, fish, or underground water. It also was found that constructed wetlands surface planted with some aquatic plants and terrestrial flowers had enhanced removal efficiencies of 22.5percent and 27.6percent, respectively, for total nitrogen and phosphorous.
机译：使用垂直流人工湿地（VFCW）研究了两个中试规模的工厂（分别位于北京和成都），以处理两年内的城市废水。结果表明，VFCW处理系统对城市污水的去除效率较高且稳定。 BOD_5，总氮和粪大肠菌群的去除率分别为96％，47％和97％。 COD，BOD_5和SS的出水浓度分别低于60 mg / L，20 mg / L和20mg / L。结果还表明，垂直流人工湿地的水力和有机负荷率分别为208approx288m / a和14.9approx26.6kg BOD_5 / m〜2.a。然后将处理后的废水用作农业灌溉和养鱼场的水源。它不会对植物，鱼类或地下水造成任何二次环境污染。还发现，种植了一些水生植物和陆生花卉的人工湿地表面对总氮和磷的去除效率分别提高了22.5％和27.6％。

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