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采用溶解白云石法对反渗透海水淡化水进行矿化,研究了温度、pH、白云石粒径、固液接触时间等因素对矿化反应的影响,选择合适的碱对出水pH、总碱度和碳酸钙沉淀势进行调节。结果表明,反应塔出水钙镁离子含量随温度和接触时间的增大而增大,随pH、白云石粒径的增大而减小。在优化的条件下,产水钙镁离子含量为分别为82.75mg/L(以CaCO3计)和19.25mg/L,pH为7.80,碱度为95.28mg/L(以CaCO3计),碳酸钙沉淀势为1.22mg/L(以CaCO3计)。产水水质稳定,不具有腐蚀性。
The dolomite method was used to mineralize reverse osmosis desalinated water. The effects of temperature, pH, dolomite size, solid-liquid contact time and other factors on the mineralization were studied. The influence of pH, total alkalinity And calcium carbonate precipitation potential regulation. The results show that the content of calcium and magnesium in the effluent of the reaction tower increases with the increase of temperature and contact time, and decreases with the increase of pH and dolomite size. Under optimized conditions, the contents of Ca and Mg in the produced water were 82.75 mg / L (calculated as CaCO3) and 19.25 mg / L respectively, the pH was 7.80, the alkalinity was 95.28 mg / L (calculated as CaCO3) The potential is 1.22 mg / L (calculated as CaCO3). Water quality and stability, not corrosive.