摘要
研究低、中、高3种不同进水浓度对种植美人蕉(Canna indica)的组合人工湿地(表面流-水平流)氮去除效率的影响以及作用机理。结果表明:在总氮(TN)为240 mg/L,化学需氧量(CODCr)为490 mg/L的高浓度进水条件下该湿地系统能正常运行,并有效去除氮和有机质,9月份湿地系统对氮的去除效果高于7月份。该人工湿地脱氮效果受水力停留时间及进水浓度影响。
The removal efficiency of nitrogen as well as the removal mechanism in integrated constructed wetlands with Canna indica were studied in this experiment under low,middle and high influent concentrations. The results showed that the wetlands could run well and effectively remove nitrogen and organic matter under high influent concentration with the TN of 240 mg/L and CODCrof 490 mg/L. There was higher removal efficiency of nitrogen in September than that in July. Both prolong hydraulic retention time( HRT) and influent concentration could affect the nitrogen removal efficiency in integrated constructed wetlands.
出处
《山东农业科学》
2018年第3期66-71,共6页
Shandong Agricultural Sciences
基金
国家自然科学基金项目(41501520)
山东省农业科学院青年科研基金项目(2014QNM44)
山东省农业科学院农业科技创新工程项目(CXGC2016A08)
山东省科技发展计划项目(2014GGH210001)
关键词
进水浓度
人工湿地
脱氮效率
硝化作用
反硝化作用
碳源
美人蕉
Influent concentration
Constructed wetlands
Nitrogen removal efficiency
Nitrification
Denitrification
Carbon source
Canna indica
