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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Constructed wetlands in Flanders:a performance analysis
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Constructed wetlands in Flanders:a performance analysis

机译：法兰德斯人工湿地：性能分析

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摘要

During the last decade,the number of constructed wetlands in Flanders (Belgium) increased exponentially.Extensive data collection resulted in a database of 107 constructed wetlands that was used to evaluate certain trends and treatment performances.Design sizes vary between 1 and 2000 population equivalents (PE),with the majority of reed beds having a size smaller than 500 PE.Most reed beds are used as single treatment units,although they are sometimes also combined with other reed beds or even conventional systems.The main purpose is to treat domestic and dairy wastewater.Average removal efficiencies were lowest with free-water-surface (FWS) reed beds (chemical oxygen demand (COD),61%;suspended solids (SS),75%;total nitrogen (TN),31 % and total phosphorus (TP),26%).The best overall performance was obtained with vertical flow (VF) wetlands (COD,94%;SS,98%;TN,52%;TP,70%),except for total nitrogen removal where combined reed bed systems even did better (COD,91%;SS,94%;TN,65%;TP,52%).Despite this considerable achievement in removal,the effluent nutrient concentrations of many systems remain too high and entail a tangible danger of eutrophication.
机译：在过去十年中，法兰德斯（比利时）的人工湿地数量呈指数增长。广泛的数据收集导致107个人工湿地的数据库被用于评估某些趋势和处理效果。设计规模在1至2000人口当量之间变化（ PE），大多数芦苇床的尺寸小于500 PE。大多数芦苇床用作单个处理单元，尽管有时也与其他芦苇床或什至是常规系统结合使用。主要目的是处理家用和家用游离水面（FWS）芦苇床的平均去除效率最低（化学需氧量（COD）为61％;悬浮固体（SS）为75％;总氮（TN）为31％和总磷（TP），26％）。垂直流（VF）湿地获得最佳的总体性能（COD，94％; SS，98％; TN，52％; TP，70％）芦苇床系统甚至表现更好（COD，91％; SS，94％; TN，65％; TP，52％）。尽管在去除方面取得了可观的成就，但许多系统的污水养分浓度仍然过高，并存在明显的富营养化危险。

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