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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Comparative effectiveness of engineered wetland systems in the treatment of anaerobically pre-treated domestic wastewater
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Comparative effectiveness of engineered wetland systems in the treatment of anaerobically pre-treated domestic wastewater

机译：工程湿地系统在厌氧预处理生活污水处理中的比较效果

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A study was carried out to assess the effectiveness of engineered wetland systems (EWSs) in the treatment of domestic wastewater pre-treated in an upflow anaerobic sludge blanket (UASB) reactor in the tropics.Relative advantages of using different wetland plants were also assessed.The EWS had three units using river sand media.One bed was left unplanted and used as a control while each of the remaining beds was planted with either Typha latifolia (cattail) or Colocasia esculenta (cocoyam).The EWS was able to remove well phosphorus,sulphate,ammonia,and COD.Mean removals of phosphorus (as orthophosphate) were 51% for the control unit,69% for the T.latifolia unit,and 75% for the C.esculenta unit.Mean removals of sulphate were 46% for the control unit,72% for the T.latifolia unit,and 77% for the C.esculenta unit.Mean removals of ammonia were 63% for the control unit,74% for the T.latifolia unit,and 75% for the C.esculenta unit.Mean removals of COD were 65% for the control unit,79% for the T.latifolia unit,and 75% for the C.esculenta unit.This study demonstrated that the EWS can effectively treat anaerobically pre-treated UASB reactor effluent.As such,when coupled to a UASB reactor,the EWS is a promising alternative to the traditional septic tank/soakaway coupled systems widely used for treating domestic wastewater.This study reaffirms the accepted notion that wetland plants enhance the performance of wetland systems.However,in this study,no significant performance difference was observed between the two planted EWS units.
机译：进行了一项研究，以评估工程湿地系统（EWS）在处理热带地区上流厌氧污泥层（UASB）反应器中预处理的生活污水中的有效性，还评估了使用不同湿地植物的相对优势。 EWS有3个使用河沙介质的装置，其中一个床不种植，用作对照，其余的每个床都种植香蒲或香蒲（Colocasia esculenta）（Cocoyam），EWS能够去除井中的磷。 ，硫酸盐，氨和化学需氧量。对照组的平均磷去除率（正磷酸盐）为51％，,叶的平均去除率是69％，es草的平均去除率是75％。硫酸盐的去除率是46％对照单元中，T.latifolia单元为72％，C.esculenta单元为77％。控制单元的氨平均去除率为63％，T.latifolia单元为74％，氨氮去除率为75％。 C.esculenta单位.COD的平均去除率是控制单元的65％，控制单元的79％ T.latifolia单元和C.esculenta单元的75％。这项研究表明，EWS可以有效地处理厌氧预处理的UASB反应器废水。因此，当与UASB反应器耦合时，EWS是一种有希望的替代方法。传统的化粪池/索道混合系统广泛用于处理生活污水。本研究重申了湿地植物增强湿地系统性能的公认观点。但是，在本研究中，两个种植的EWS单元之间没有观察到明显的性能差异。

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