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为使海水淡化水具备较好的化学稳定性,能市政管网中安全输送,并符合饮用水卫生标准作为生活用水使用,对CO2溶解石灰石法矿化海水淡化水进行了实验,研究了反应时间等单因素对矿化效果的影响,并进行了正交实验。结果表明,当在每升淡化水中投入2 g碳酸钙、CO2通入体积流量16.05 mL/min、搅拌速率150 r/min的优化条件下,反应20 min后,调节pH,可使水质相对稳定,拉尔森系数IL和朗格利尔饱和指数LSI分别为0.02和0.44。
In order to make seawater desalinated water have good chemical stability, can be safely transported municipal pipe network, and in line with drinking water health standards as domestic water use, CO2-dissolved limestone mineralized seawater desalination water experiments were conducted to study the reaction time And other single factors on the effect of mineralization, and conducted orthogonal experiments. The results showed that under the optimum conditions of 2 g calcium carbonate per liter of desalinated water, CO2 flow rate of 16.05 mL / min and stirring rate of 150 r / min, the pH value was adjusted after 20 min reaction, the water quality was relatively stable, The Larsson coefficient IL and the Langlier’s saturation index LSI are 0.02 and 0.44, respectively.