采用平板陶瓷膜过滤技术对研磨废水进行处理。磁粉废水进水水质为pH 9.6、COD约为70 mg/L、SS含量为230 mg/L，铁红废水pH为7.2、COD约为55 mg/L、SS含量为2 900 mg/L，经膜过滤工艺处理后，磁粉废水和铁红废水pH下降率分别为11.9%和1.5%，COD下降率分别为75.6%和84.1%，SS去除率均为100%。以50 m³/d、SS含量为5 000 mg/L的废水处理项目为例进行经济核算显示，正产运行情况下595 d可回收工程投资，快速实现环保效益和经济效益双赢。

Flat ceramic membrane filtration technology is employed to treat with wastewater from grinding process.Influent magnetic powder wastewater contains 70 mg·L^-1 of COD,230 mg·L^-1 of SS and its pH is 9.6.Influent iron red-containing wastewater contains 55 mg·L^-1 of COD,2 900 mg·L^-1 of SS and its pH is 7.2.After treated by membrane filtration process,pH values of magnetic powder wastewater and iron red wastewater decrease by 11.9% and 1.5% respectively,COD in them decrease by 75.6% and 84.1% respectively,and SS removal rates of both are 100%.Taking a 50 m³/d wastewater treatment project as an example,with a SS content of 5 000 mg·L^-1 in influent wastewater,economic accounting shows that it will spend 595 days to recover project investment under normal operation,quickly achieving win-win environmental and economic benefits.

涂燕红(1989-),女,硕士,助理讲师,研究方向为污水处理,tuyanhong130815@163.com