CHENMing,XIAOJun,HUANGMin-jie,et al.Nitrogen and Phosphorus Removal Efficiency of Constructed Wetland Enhanced by Basalt Fiber and Intermittent Aeration[J].China Water & Wastewater,2022,38(3):81-86.
玄武岩纤维+间歇曝气强化人工湿地脱氮除磷效能
- Title:
- Nitrogen and Phosphorus Removal Efficiency of Constructed Wetland Enhanced by Basalt Fiber and Intermittent Aeration
- 摘要:
- 为增加人工湿地的微生物富集量，提高脱氮除磷性能，在传统人工湿地基质中加入玄武岩纤维填料，研究该新型基质人工湿地对常规污染物的去除效果，并比较有无间歇曝气对人工湿地处理效能和基质酶活性的影响。结果表明，在无曝气阶段，除TP以外，玄武岩纤维人工湿地对COD、TN和NH4+-N的去除率都在70%以上，相比对照组提高了5%~10%；在间歇曝气阶段，玄武岩纤维人工湿地对COD、TN、NH4+-N和TP的去除率分别为87.47%、87.92%、92.94%和63.52%，相比对照组提高了12%~25%。此外，玄武岩纤维人工湿地曝气前后的基质酶活性均高于对照组，并且间歇曝气能够显著提高湿地内的脱氢酶和脲酶活性。
- Abstract:
- To increase microbial abundance and improve nitrogen and phosphorus removal performance of constructed wetland, basalt fiber filler was packed into the traditional constructed wetland to explore the performance of the new constructed wetland for conventional pollutants removal, and the treatment efficiency and substrate enzyme activity of the wetland with or without artificial aeration was compared. In the stage without aeration, except for TP, the removal efficiencies of COD, TN and NH4+-N by basalt fiber constructed wetland were all above 70%, which increased by 5%-10% compared with the control group. In the intermittent aeration stage, the removal efficiencies of COD, TN, NH4+-N and TP by the basalt fiber constructed wetland were 87.47%, 87.92%, 92.94% and 63.52%, respectively, which increased by 12%-25% compared with the control group. In addition, the substrate enzyme activity of the basalt fiber constructed wetland before and after aeration was higher than those of the control group, and intermittent aeration could significantly increase the activity of dehydrogenase and urease in the wetland.
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