摘要
以潜流人工湿地除氮效果为考察指标,采用正交试验法研究了水力负荷、pH、碳氮比、湿地植物等4个因数对考察指标影响的显著性及优选条件,并利用SPSS13.0软件对正交试验结果进行方差分析。结果表明,pH、水力负荷、碳氮比对潜流人工湿地氨氮和总氮去除率的影响显著,各因素对潜流人工湿地总氮和氨氮去除率的影响程度由大到小顺序为:水力负荷、碳氮比>pH>湿地植物。潜流人工湿地总氮去除效率最高的条件为:pH为7.5,水力负荷为33 mm.d-1,碳氮比15,湿地植物为芦竹。氨氮去除效率最高的条件为:pH为7.5,水力负荷为33 mm.d-1,碳氮比15,植物为香根草。从工程技术经济的角度出发,采用pH为7.5,水力负荷为300 mm.d-1,碳氮比大于3,湿地植物为香根草或芦竹,也可取得较好的除氮效果。
By taking efficiency of nitrogen removal with subsurface flow constructed wetland as study index,orthogonal experimental technique is used to investigate the notability and optimization conditions of the hydraulic loading,pH,C/N and wetland vegetable four factors on the study index.Software SPSS13.0 is used to make variance analysis to results of the orthogonal experiment.The results show that pH,hydraulic loading and C/N have significant influences on ammonia nitrogen and total nitrogen removal with subsurface flow constructed wetland.The influence degree of the four factors on total nitrogen and ammonia nitrogen removal with subsurface flow constructed wetland from larger to lower is： hydraulic loading,C/N pH wetland vegetable.The maximum conditions of the total nitrogen removal with subsurface flow constructed wetland are： pH 7.5,hydraulic loading 33 mm·d-1,C/N 15 and wetland vegetable is arundo donax linn.And the maximum conditions of the ammonia nitrogen removal are： pH 7.5,hydraulic loading 33 mm·d-1,C/N 15 and wetland vegetable is vetiver zizanioides.From the economic point of view in engineering application,better efficiency for nitrogen removal can be achieved when pH is 7.5,hydraulic loading is 300 mm·d-1,C/N 3 and wetland vegetable is vetiver zizanioides or arundo donax linn.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第12期47-49,共3页
Technology of Water Treatment
基金
国家"十一五"科技支撑计划重点课题(2008BAD96B04)
江西省自然科学项目(2007GZC0843)
关键词
潜流人工湿地
除氮
正交试验
碳氮比
水力负荷
subsurface flow constructed wetland
nitrogen removal
orthogonal test
C/N
hydraulic loading
作者简介
王全金（1956-），女，教授，研究方向为水污染控制；联系电话：0791—7046559,E—maihjdxbl@ecjtu．jx．cn
