博斯腾湖西岸表面流人工湿地对水体中重金属离子的去除效果

2019年4~10月,以博斯腾湖西岸表面流人工湿地为研究对象,测定该人工湿地的进水口、出水口采样点水体中的重金属离子含量,利用进水口和出水口水体中Mn、Fe、Cu、Zn、Cd、Ni、As和Cd离子含量,计算人工湿地对这些水体中重金属离子的去除率。研究结果表明,博斯腾湖西岸表面流人工湿地对水体中Fe离子、Mn离子、Cu离子、Zn离子、Ni离子、Cr离子、As离子和Cd离子的去除率分别为84.63%、57.24%、52.82%、47.44%、44.74%、42.42%、41.94%和33.33%;夏季人工湿地对水体中重金属离子的去除率大于春季和秋季。

Removal Effect of Heavy Metal Ions in the Water by Surface Flow Constructed Wetland in West Coast of Bosten Lake

Constructed wetland was a common method in sewage/wastewater treatment.Heavy metals in wastewater could efficiently removed by constructed wetland.Taking the constructed wetland on the west coast of Bosten Lake as the research object,the heavy metal ions contents in the inlet,outlet and the sampling sites of the constructed wetland were continuously monitored from April to October 2019.The removal rates of heavy metal ions by the constructed wetland was calculated by comparing and analyzing the changes of the average concentration of ions of Fe,Mn,Cu,Zn,Ni,Cr,As and Cd in the inlet and outlet water.The results showed that the removal effect of heavy metal ions was good by surface-flow constructed wetlands.The order of removal rates of heavy metal ions from high to low were ions of Fe,Mn,Cu,Zn,Ni,Cr,As and Cd,which were 84.63%,57.24%,52.82%,47.44%,44.74%,42.42%,1.94%and 33.33%;respectively.The removal rates of heavy metal ions by constructed wetland in summer were higher than those in spring and autumn.