采用晶型沉淀法高效分离和回收电镀污泥重金属

摘要

采用一种全新的晶型沉淀法高效分离和回收电镀污泥中的重金属.该法的重要影响因素包括晶种量,沉淀剂和污泥滤液的加入速度.通过一系列实验,确定最佳的工艺条件,在此条件下铜、铁、铬的回收率分别达到96.2%,92.1%,98.2%.%A new crystal precipitation process was developed for the separation and recovery of heavy metals from electroplating sludge. The processing parameters including volume of crystal seeds, adding speed of a precipitator and adding speed of the leachate were eval-uated according to sequential experimental designs. The optimum separation conditions led to a recovery efficiency of Cu 96.2%, Fe 92.1%, Cr 98.3%.