Abstract: Taking the project of advanced treatment of wastewater from a lead smelter as an example,the treatment process,structure parameters and operation effects of heavy metal wastewater(HMW)are introduced. Aiming at the characteristics of HMW,it has been treated by a combined treatment technology,lime neutralizationcompound agent-KDF reactor-reverse osmosis(RO). The freshwater of RO can meet all the water quality requirements for production use,reaching the Ⅲ level standard of the Environmental Quality Standard for Surface Water (GB 3838-2002),while concentrated water reaches the special emission limits specified in the Emission Standard of Pollutants for Lead and Zinc Industry(GB 25466-2010). The project could adapt to the changing amount of HMW and has operation stability,good treatment effect,high production rate and automation degrees,having certain economic benefit,as well as environmental and social benefits.

Key words: smelter, heavy metals wastewater, advanced treatment

摘要： 以铅冶炼厂废水深度处理工程为实例，介绍了重金属废水处理工艺、构筑物参数及运行效果。针对废水特点，采用石灰中和+复合制剂+KDF反应器+反渗透联合技术处理，反渗透淡水可满足所有生产用水水质要求，达到GB 3838-2002《地表水环境质量标准》Ⅲ类标准，而浓水达到GB 25466-2010《铅、锌工业污染物排放标准》特别排放限值。该工程能适应废水量变化，运行稳定，处理效果好，产水率和自动化程度高，具有一定经济效益，以及环境和社会效益。

关键词: 冶炼厂, 重金属废水, 深度处理

CLC Number: 

• X703.1