投加型吸附剂对废水中重金属吸附效果研究

Study on the Adsorption Effect of Dosing Adsorbents on Heavy Metals in Wastewater

以深度处理重金属废水为目的,以钢渣和膨润土为实验对象,进行吸附废水中重金属的实验研究,并考察了膨润土改性后的吸附效果。结果显示,钢渣对于去除废水中的砷、镉、镍有很好的效果,去除率分别可达98.6%、99.7%、99.79%,可用于重金属废水的深度处理;膨润土在投加量为1g/L时,除铅效率可达93%,经高温改性后,效率可提升至99.8%。

For the purpose of advanced treatment of heavy metal wastewater,with steel slag and bentonite as experimental objects,an experimental study on the adsorption of heavy metals in wastewater was carried out,and the adsorption effect of modified bentonite was investigated.The results show that steel slag has a good effect on the removal of arsenic,cadmium,and nickel in wastewater.The removal rate can reach 98.6%,99.7%,and 99.79%respectively.It can be used for the advanced treatment of heavy metal wastewater;the dosage of bentonite is 1g/At L,the lead removal efficiency can reach 93%,and after high temperature modification,the efficiency can be increased to 99.8%.