Comparison of Evaporation Processes for Recovering Sodium Nitrate From Industrial Wastewater
The evaporation process of industrial wastewater containing sodium nitrate was simulated by using Aspen plus software.The applicability of three-effect parallel flow,three-effect countercurrent,and three-effect cross flow evaporation processes was analyzed and compared from the aspects of steam consumption,unit steam evaporation water content,outlet temperature of evaporation gas,and concentration of concentrated solution.It was found that the three-effect cross flow evaporation process was more conducive to recover the sodium nitrate.
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