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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。
In order to solve the problem of poor stability and strong corrosiveness of seawater desalinated water, seawater desalinated water was post-treated by CO2 dissolved natural limestone method, and the seawater desalinated water mineralized pilot was ascertained by ascend to limestone autoclave. P H of water, temperature, filler height of limestone, filler particle size and hydraulic retention time (HRT) on the mineralization of desalinated water. The results show that the mineralization effect increases with the decrease of p H, the increase of packing height and temperature, and the influence of p H is the most significant. The mineralization effect increases with the increase of limestone particle size Lower. When the HRT is more than 290 s, the influence of HRT on the mineralization effect becomes more and more obvious. The mineralized desalinated water can meet the requirement of urban safe water supply.