摘要
本文研究了用溶液中砷的总浓度表示的砷酸钙溶解度随溶液的ｐＨ值变化的关系，讨论了大气中ＣＯ２含量对砷酸钙溶解度的影响．在敞开体系中，ＣＯ２的这种影响不容忽视．这些热力学分析对含砷废水的处理和砷酸钙渣堆存具有重要的指导意义。
This paper describes the change of Ca3 (AsO4)2 solubility, which is expresed as the total concentration of As in the solution, with the PH value of solution. The influence of CO, amount in atmosphere on Ca3 (AsO4)2 solubility is discussed in detail' When the system is open, the influence of CO2 should not be ignored. Thus, the thermodynamic analysis is of significance for arsenic removal from waste water and disposal of Ca3(AsO4)2 residue.
关键词
砷酸钙
含砷废水
废水处理
砷
热力学
s:calcium arsenate, solution equilibrium, disposal of waste water containing arsenic
