用硫化物矿物处理电镀厂废水技术研究

A Study on the Technology of Treating Sewage Waterfrom the Electroplate Factory with Sulfide Minerals

大多数环境工程材料是通过表面作用（ 吸附或共沉淀） 来清除水中的有毒有害物质的，这就要求材料本身具有高表面活性。在搞清硫化物固／ 液界面行为机理的基础上，本文采用高表面活性的硫化物作为吸附剂，以重金属污染大户———电镀厂的酸性废水作为处理对象，研制了一种低成本、高效益、以废治废、简便易行的重金属污染物处理技术———硫化物矿物→鼓气搅动→ＣａＯ 调ｐＨ 值。废水经处理后，完全可以达到国家规定的排放标准。该技术的研制，对保护和净化环境具有重要的现实意义，同时具有广阔的应用前景。

Cation and anion adsorption atthesolid/solutioninterface playsanimportantrolein sever alchemical fields such as colloid and interface chemistry ,soil chemistry and geochemistry , aquatic chemistry,environmental chemistry,catalysis,and chemical engineering. The basic principles of mineral application to engineering are adsorption and precipitation reactions onmineralsurface.Thetreatment ofindustrial pollutants of heavy metalelements,characterized by low costand high efficiency,is not onlythe mostimportant problem in thefield ofenviron mental protection alloverthe world,butalso one oftheimportantsubjectson the watertreat ment. Having studied the mechanism ofinterfacereaction between solid sulfideand heavyionic solution,the authors discovered the new method ofsulfide→stirring→CaOadjusting pHvalue to treatthe sewage water containing Cr6 + ,Cr3 + ,Cu2 + ,Zn2 + ,Ni2 + ,Hg2 + ,Pb2 + ,Cd2 + in the electroplatefactory.Itis proved through many experiments that the method has attained the nationalstandards ofsewagetreatment.This method is veryimportantfor environmental pro tection ,and the prospects ofitsapplication is very bright.