排水暗管外包材料渗透性与除氮效果试验研究  

Experimental Study on Permeability and Nitrogen Removal of Envelope Materials for Drainage Pipe

作　　者：王苏胜[1] 周明耀[1] 刘璐嘉[1] 

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009

出　　处：《灌溉排水学报》2013年第3期21-23,共3页Journal of Irrigation and Drainage

基　　金：江苏省自然科学基金重点项目(BK2010041);水利部公益性行业科研专项经费项目(201201005);江苏省普通高校研究生科研创新计划项目(CXLX11_1014)

摘　　要：测定了5种排水暗管外包材料(麦秸秆、锯末、陶粒、沸石、纤维球)的透水特性,并分析了不同外包材料及其厚度的去氮效果。结果表明,各外包材料对氨态氮和硝态氮的去除能力存在差异,无机材料对氨态氮的吸附能力较强,有机材料对硝态氮的去除能力更好;10cm厚度时锯末除氮效果最好,去除率为55.1%,而在30cm厚度时沸石相对更好,去除率为76.2%;外包料的厚度对总氮的去除能力呈正相关关系,每增加10cm厚度,麦秸秆和锯末总氮去除率增加6%～8%,陶粒和沸石总氮去除率增加6%～28%,纤维球总氮去除率增加10%～20%。Wheat straw, sawdust, ceramic, zeolite, fiber ball were selected as envelope materials for drain- age pipe to test the permeable characteristics, and removal effects of different forms of nitrogen under dif- ferent materials and thicknesses were analyzed. The results showed that the abilities of different materials to remove NH＋ --N and NO3- --N were different. Inorganic material had a better ability to remove NH＋ --N, while organic material had a good ability to remove NO/--N. Under 10cm thickness of enve- lope material, sawdust had the top nitrogen removal efficiency of 55.1%, while the zeolite had the top re- moval rate of 76.2% under the thickness of 30 cm. There was a positive relationship between the thickness and the nitrogen removal capacity of envelope material. The nitrogen removal efficiency of wheat straw and sawdust, ceramic and zeolite, fiber ball increased by 6 % -8 %, 6 % -28 %, 10% -20 % respectively when thickness increased by 10 cm.

关 键 词：暗管排水 外包料 渗透性能 除氮 

分 类 号：S276.1[农业科学—农业水土工程]