海水脱钙技术研究进展及发展趋势

Progress and development trend of calcium removal from seawater

海水脱钙作为海水预处理技术是进行海水综合利用极其重要的一个环节,技术种类繁多,但大多因为技术原因或经济原因处于实验室研究阶段,远未工业化推广,尚需在机理和应用方面做大量的研究工作。介绍了离子交换法、纳滤法、化学法、电化学法、萃取法、活性污泥法及烟气脱钙法的技术情况和研究进展。指出烟气海水脱钙是一种绿色、颇具发展前景的,具有创新性和可行性的技术。

Calcium removal from seawater, as techniques for pretreatment of seawater, is an absolutely necessary process. There arc many sorts of methods removing calcium from seawater. However, for economic or technical reasons, most of them are still at the stage of experimentation at present. Their industrial application is not realized and lots of the research work on mechanism and application are needed. The developments and technical situations of ion-exchange method, nanofiltration, chemical precipitation, electrochemical, solvent extraction, activated sludge method and removing calcium from seawater using flue gas are introduced in detail. Removing calcium from seawater using flue gas is proposed as a new zreen technology with innovation and feasibility.