Abstract：
Ca2+、Mg2+ removal from Glauber type brine by sodium hydroxide and sodium carbonate has been studied．The effects of sodium sulfate and sodium chloride on removal efficiency of Ca2+, Mg2+ at room temperature were investigated in detail when addition amount of sodium hydroxide and sodium carbonate was theoretical value，reaction time was 30 min，aging time was 60 min．The experimental results show that the presence of sodium sulfate has large effect on removal efficiency of Ca2+．The removal rate of Ca2+ is more than 90% when the concentration of sodium sulfate is below 30 g/L．The presence of sodium sulfate has good but little effect on removal efficiency of Mg2+．The presence of sodium chloride has small effect on removal efficiency of Ca2+ and Mg2+．When the concentration of sodium chloride increases，the removal rate of Ca2+ increases significantly，but the removal rate of Mg2+ declines slightly．
DONG Ze-Liang, ZHANG Qi, WANG Li-Cong, CAI Rong-Hua, MA Lai-Bo, HUANG Xi-Ping.Effects of sodium sulfate and sodium chloride on Ca2+、Mg2+ removal from Glauber type brine by sodium hydroxide and sodium carbonate[J]. Chemcial Industry and Engineering, 2013,30(4): 12-15
2013, Vol. 30 
