We reach these conclusions:The plant is very important in constructed wetland , and it also have the ability of N , P removal .

本研究主要得出如下结论：植物在人工湿地系统中有着重要的作用，具有一定的去除氮、磷的能力。

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Impact of COD/N values of feed wastewater on COD, nitrogen removal and biomass growth in a sequencing fed batch reactor (SFBR) operation was investigated.

采用序半连续反应器就新鲜废水中COD/N比对COD、氮化合物去除效率和微生物生长的影响进行了研究。

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This study investigates the removal of COD and NH3-N by aerobic granule sludge, which is nearly 70% and 90% in average respectively.

本实验考察了整个改变过程中颗粒污泥对COD以及NH_3—N的处理效果，平均去除率分别达70%和90%。

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