5种人工湿地填料对氨氮和磷的吸附效果研究  

Absorption Properties of Ammonia Nitrogen and Phosphorus by Different Substrates in Constructed Wetland

作　　者：赵占军[1] 王玉杰[1] 王云琦[1] 

机构地区：[1]北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京100083

出　　处：《浙江林业科技》2011年第1期28-32,共5页Journal of Zhejiang Forestry Science and Technology

基　　金："948"国家林业局引进项目"城市河流生态系统森林生物工程修复技术引进"(2007-4-14)

摘　　要：以沸石、圆陶粒、粗砂、页岩、砾石为试验材料,研究人工湿地填料对氨氮、TP的吸附特性。结果表明,在相同进水水质和水力负荷的运行条件下,沸石对氨氮的吸附量最大,页岩的吸附量在90min时达到最大值,沸石、圆陶粒、粗砂的吸附量在120min时达到最大值,砾石的吸附量在150min时达到最大值;砾石对TP的吸附量最大,粗砂次之,沸石的最小,页岩和粗砂的吸附量在第120min时达到最大,沸石和圆陶粒的吸附量在120min后基本稳定;温度为25℃时,沸石对氨氮的吸附效果最好,砾石对TP的吸附效果最好;溶液pH值<7时,沸石对氨氮有较好的吸附效果;溶液pH值≥7时,有利于各填料对TP的吸附。Experiment was conducted on absorption properties of ammonia nitrogen and phosphorus（TP） by zeolite, ceramsite, coarse sand, shale and gravel in constructed wetland. The result showed that under the same input condition of water quality and power, zeolite had the most amount of ammonia nitrogen absorption. Shale＇s absorption topped by the end of 90 minutes, while zeolite, ceramsite and coarse sand＇s by the end of 120 minutes, and gravel at 150minutes. For TP adsorption, gravel had the maximum absorption amount, followed by coarse sand, and zeolite had the was stable 120 minutes later. The experiment demonstrated that at 25℃, zeolite performed the best absorption of ammonia nitrogen and the gravel of iP. When the tested solution pH〈7, zeolite had the best absorption of ammonia nitrogen, when pH≥7, which could promote the absorption of TP by each filled substrates.

关 键 词：人工湿地 填料 吸附 氨氮 磷 

分 类 号：S718.51[农业科学—林学]