SWRO+MCR工艺处理电镀废水零排放工程研究

Study on Zero Discharge Engineering of Electroplating Wastewater Treated by SWRO+MCR Process

针对某电镀公司生产线排放废水的特点及相关处理要求,采用反渗透海水淡化装置(SWRO)与膜化学反应器(MCR)工艺,并结合高频电力系统,对含镍、含铬及综合电镀废水进行了处理,处理规模总计为60 m^(3)/d。结果表明:经SWRO+MCR工艺处理后的电镀废水,出水水质满足标准GB/T19923-2005标准中的相关要求,出水可全部回用于工业用水及杂用水,处理后干污泥及蒸发釜液则委外处置,实现了电镀废水的零排放。工程总费用约为643万元,废水处理成本约为97.27元/m^(3)。可见,工艺流程及工程案例能够为电镀废水的零排放处理工艺创新及同类项目提供一定的参考。

Aiming at the characteristics of the wastewater discharged from the production line of an electroplating company and the related treatment requirements,reverse osmosis desalination device(SWRO)and membrane chemical reactor(MCR)process,combined with high-frequency electric power system,are used to treat nickel-containing,chromium-containing and comprehensive electroplating wastewater,and the treatment scale is 60 m^(3)/d in total.The results show that,after the electroplating wastewater treated by the SWRO+MCR process,the effluent quality meets the relevant requirements in the standard GB/T19923-2005,and the treated dry sludge and the evaporation kettle liquid are disposed of externally.The effluent can be fully reused for industrial water and miscellaneous water,and the treated dry sludge and evaporation kettle liquid are disposed of outside,realizing zero discharge of electroplating wastewater.The total cost of the project is about 6.43 million yuan,and the cost of wastewater treatment is about 97.27 yuan/m^(3).It can be seen that the process and engineering cases can provide certain reference for the innovation of zero-discharge treatment process of electroplating wastewater and similar projects.