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Wastewater treatment in horizontal subsurface flow constructed wetlands using different media (setup stage)

机译：使用不同的介质在水平地下流动人工湿地中进行废水处理（设置阶段）

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Wastewater treatment through horizontal subsurface flow (HSSF) constructed wetlands (CWs) using three different treatment media (gravel, pieces of plastic pipes, and shredded tire rubber chips) were investigated in Samaha village, Dakahliya, Egypt. The study focused on the wetland setup stage during the first months of its operation (setup stage). In this stage media porosity, bacterial biofilm, and plant roots growth were in progress and it was prior to the operational steady state stage. Objectives of this paper are to study the change in media porosity of HSSF wetland cells in order to estimate duration of wetland setup stage, and to evaluate the use of different bed media on biological oxygen demand (BOD), chemical oxygen demand (COD) and total suspended solids (TSS) treatment. The results showed that after 180 days of operation, the wetland cells had reached steady porosity and had started stable treatment. Also performance of plastic media bed in pollutants reduction was better than gravel and rubber beds and gravel media was in advanced than rubber media.
机译：在埃及Dakahliya的Samaha村，研究了使用三种不同的处理介质（砾石，塑料管碎片和切碎的轮胎橡胶碎片）通过水平地下流（HSSF）人工湿地（CW）进行的废水处理。该研究的重点是湿地运行的最初几个月（安装阶段）。在此阶段，介质孔隙度，细菌生物膜和植物根部生长正在进行中，并且处于运行稳态阶段之前。本文的目的是研究HSSF湿地细胞的介质孔隙率的变化，以估计湿地建立阶段的持续时间，并评估不同床层介质对生物需氧量（BOD），化学需氧量（COD）和生物需氧量的使用情况。总悬浮固体（TSS）处理。结果表明，运行180天后，湿地细胞已达到稳定的孔隙率并开始稳定的处理。塑料介质床在减少污染物方面的性能也优于砾石和橡胶床，而砾石介质比橡胶介质先进。

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