水利水电技术2013，Vol.44Issue(6)：26-31,6.
土壤—植物系统净化地表径流非点源污染物实验研究
Experimental study on removal of non-point pollutants in surface runoff with soil-vegetation system
摘要
Abstract
A soil-vegetation system is made up with self-designed 6 m soil-bins,the experiment on removing the non-point pollutants is carried out by simulation of runoff,i.e.setting various inflow-concentrations of pollutants and taking a soil-bin without vegetation for the blank comparison.The result shows that:(Ⅰ) the existence of vegetation can effectively buffer the surface runoff and enhance the removal rate; in which the removal effect of the soil-tall fescue system is slightly better than that of the soilalfalfa system,and then the removal rates of SS,NO3--N,NH3-N,TDP can reach 86.61％、25.83％、52.03％、26.53％ 及 76.59％ respectively; (2)within the range of the inflow-concentrations of pollutants adopted in this study,the impact of inflow-concentrations of pollutants on the removal effect of the treatment system depends on the existence states of pollutants,and no any obvious changes are there after the increases of the inflow-pollutants,whereas the removal rate of the dissolved nitrogen shows a significant decline; (3) if representing the interception characteristics of pollutants by the changes of the outflow concen-trations of pollutants along with the runoff extension,both SS and PP outflow concentrations decrease along with the increase of the runoff extension exponentially and NO3--N,NH3-N and TDP outflow concentrations decrease along with the increase of the runoff extension linearly,meanwhile,the conditions of vegetation and inflow concentrations of pollutants have no obvious impacts on the interception characteristics of pollutants.关键词
土壤—植物系统/地表径流/非点源污染物/净化/模拟径流Key words
soil-vegetation system/ surface runoff/ non-point source pollutants/ removal of pollutants/ simulated runoff分类
资源环境引用本文复制引用
霍炜洁,周怀东,刘玲花,吴佳鹏..土壤—植物系统净化地表径流非点源污染物实验研究[J].水利水电技术,2013,44(6):26-31,6.基金项目
中国水利水电科学研究院青年基金项目(环集1339)和"十二五"科技支撑计划村镇受损生态系统修复与重建使用技术研发(2012BAJ21B03)联合资助. （环集1339）
