电吸附除盐技术在燃煤电厂中的应用研究进展

Research progress on application of electro-adsorption desalination technology in coal-fired power plant

介绍了4种碳电极材料的优缺点;分析了国内外燃煤电厂的电吸附除盐技术应用案例,并结合电厂脱硫废水的特点指出了电吸附技术的发展方向以及存在的一些问题。实际应用结果表明,电吸附技术对水的前处理要求简单。处理能力达到200 m^(3)/h及以上的工业化应用案例表明,电吸附除盐技术处理火力发电厂循环冷却水,在产水率为70%~76%的条件下,硬度、钙硬度以及氯化物的去除率可达65%~80%,电吸附技术处理火力电厂循环冷却水排污水的除盐成本较低。

The advantages and disadvantages of four kinds of carbon electrode materials are introduced.The application cases of electro-absorption desalination technology in coal-fired power plants worldwide are analyzed.Combined with the characteristics of the desulfurization wastewater in power plant,the development direction and some problems of electro-adsorption desalination technology are proposed.Practical applications illustrate that electro-adsorption desalination technology requires simple to pretreatment of wastewater.Two cases of industrial scale applications with a processing capacity of 200 cubic meters per hour or more show that the removal rates of hardness,calcium hardness and chlorides can reach 65%-80%when electro-adsorption desalination technology is applied to treat with the circulating cooling water drainage in coal-fired power plants and the water production rate is 70%-76%.The cost of desalination is low.