摘要
研究了反硝化潜流人工湿地系统的挂膜启动过程,寻求判断系统挂膜启动进程的方法,为反硝化潜流人工湿地的启动提供理论依据。在进水流量为2~3L/h、温度为6~10℃、DO控制在5mg/L、pH值为7.0~8.0的条件下,25d内挂膜成功。挂膜成功后,系统对COD和氨氮的去除率分别约为60%和40%,对TN和硝态氮的去除率分别达到50%和70%以上,出水亚硝态氮为0.08~0.9ms/L,水质较为清澈。此时,系统基质上生物膜为黄褐色,厚度约为0.5mm,生物相较为丰富。
The biofilm formation and start-up of denitrification subsurface constructed wetland were studied to find a method for judging the completion of biofilm formation and start-up, which could provide the theory basis for the start-up of the denitrification subsurface constructed wetland. Under the conditions of the influent flow of 2 to 3 L/h, temperature of 6 to 10 ℃, DO of 5 mg/L and pH of 7.0 to 8.0, the biofilm was formed within 25 days. After the formation of biofilm, the removal rates of COD and ammonia nitrogen were about 60% and 40% respectively, the removal rates of TN and nitrate nitrogen were over 50% and 70% respectively, the effluent nitrite nitrogen was 0.08 to 0.9 rag/L, and the effluent was clear. By this time, the biofilm on the substrate was yellow brown, the thickness was about 0.5 mm, and the biofaeies were rich.
出处
《中国给水排水》
CAS
CSCD
北大核心
2015年第11期10-13,共4页
China Water & Wastewater
基金
河南省科技攻关项目(142102310113)
关键词
潜流人工湿地
挂膜
反硝化
subsurface constructed wetland
biofilm formation
denitrification