摘要
研究了人工湿地在间歇流、连续流进水方式下处理生活污水的效率,并进行了对比分析。在平均水力负荷4.8 cm/d时,间歇流和连续流人工湿地COD平均去除率分别为78%和64%;NH3-N平均去除率分别为60%和44%;TP平均去除率均为53%。结果表明,间歇流进水能够提高床体内的含氧量,缓解植物根系放氧不足,提高了污染物去除率。
Comparative study was made for wastewater treatment efficiency by using batch-flow and continuous-flow constructed wetlands. When hydraulic loading was 4.8 cm/d, the average removal rates of chemical oxygen demand（COD） by batch-flow and continuous-flow constructed wetlands were 78M and 64M respectively. The average removal rates of Ammonia-nitrogen（NH4-N） were 60M and 44 % respectively. Both of the average removal rates of total-phosphorus（TP） were 53%. The results indicated that the batch-flow way of constructed wetland may utilize atmospheric reaeration at a larger degree,increase the quantum of oxygen in wetland bed and remove the contamination.
出处
《安全与环境工程》
CAS
2005年第3期46-48,51,共4页
Safety and Environmental Engineering
基金
国家建设部研究开发基金资助项目(04-02-067)。
关键词
生活污水
人工湿地
间歇流
连续流
wastwater
constructd wetland
batch-flow
continuous-flow
