CO_2溶解天然石灰石法矿化海水淡化水中试研究  

THE PILOT SCALE RESEARCH ON MINERALIZATION TECHNOLOGY OF DESALINATED WATER BY DISSOLVING LIMESTONE WITH CO_2

作　　者：孙权[1] 张蕾[1] 程鹏高[1] 孙吉镇 于江龙[1] 唐娜[1] 

机构地区：[1]天津科技大学化工与材料学院,天津海水资源与化学重点实验室,天津300457

出　　处：《水处理技术》2015年第10期116-118,130,共4页Technology of Water Treatment

基　　金：天津市滨海新区塘沽科技发展专项(2013CYH08-06);天津市滨海新区科技小巨人成长计划项目(2011-XJR13020);天津市海洋经济创新发展区域示范项目(cxsf2014-26);教育部创新团队项目以及天津市创新团队项目

摘　　要：为解决海水淡化水水质稳定性差和腐蚀性较强的问题,采用CO2溶解天然石灰石法对海水淡化水进行后处理,通过上升流向石灰石反应釜,进行了海水淡化水矿化中试,考察了淡化水的p H、温度、石灰石的填料高度、填料粒径以及水力停留时间(HRT)对淡化水矿化效果的影响。结果表明,在一定的填料高度范围内,矿化效果随p H降低、填料层高度的增加以及温度的升高而增加,p H的影响最为显著;矿化效果随着石灰石粒径的增大而降低。当HRT大于290 s时,HRT对矿化效果的影响越来越明显,矿化后的淡化水能够满足城市安全供水要求。The CO2 and limestone were applied to mineralize the desalinated water to solve the problems of strong corrosion and poor stability, which was investigated in pilot scale. The effects ofpH, temperature, residence time, limestone filling height and particle size on the effect of mineralization were studied in detail with a rising flow limestone reactor. It was concluded that in a certain range of limestone filling height, the effect of mineralization increased significantly with decreasing pH, packing height and temperature while decreased with the increasing particle size, and it was improved obviously when the residence time was longer than 290 s. The mineralized water could fulfill the standard of urban water supply.

关 键 词：海水淡化水 矿化 中试 石灰石反应釜 水力停留时间 

分 类 号：P747.7[天文地球—海洋科学]