垂直流人工湿地内部曝气对出水水质的影响

[目的]研究垂直流人工湿地内部曝气对出水水质的影响。[方法]以迎龙污水处理厂中第二级湿地为试验场地,研究了垂直流人工湿地在不同曝气压力、曝气深度下对生活污水CODCr、氨氮、总磷去除效果的影响。[结果]湿地内部曝气可以提高CODCr的去除率;在深层(50 cm)曝气能够提高氨氮去除率,在浅层(25 cm)曝气不利于氨氮的去除;总磷的去除受溶解氧的影响较小。[结论]该研究为垂直流人工湿地内部曝气的实际应用提供了参考。

Influence of Internal Aeration in Vertical Flow Constructed Wetland on Effluent Quality

[Objective] The research aimed to study influence of the internal aeration in vertical flow constructed wetland on effluent quality.[Method] The second level of wetland in Yinglong Sewage Treatment Plant as experimental site,influences of the vertical flow constructed wetland on the removal effects of CODCr,ammonia nitrogen and total phosphorus in domestic sewage under different aeration pressures and depths were studied.[Result] Internal aeration of the wetland could improve the removal efficiency of CODCr.Aeration could improve removal efficiency of the ammonia nitrogen at the deep layer(50 cm),but wasn’t favorable for removal of the ammonia nitrogen at the shallow layer(25 cm).Dissolved oxygen had small influence on removal of the total phosphorus.[Conclusion] The research provided reference for actual application of the vertical flow constructed wetland by internal aeration.