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实际工业冷却循环水中各离子的存在影响钙硬度的去除效果，研究了电导率、Mg2+、HCO~-3、SiO32-和EDTMPA阻垢剂对电化学-微滤耦合系统除垢性能的影响。当水体中电导率从2000μS/cm增加至5000μS/cm时，钙硬度去除率从79%下降到76%。提高HCO~-3的浓度有利于钙硬度的去除。当Mg2+的浓度从100 mg/L增加到400 mg/L时，钙硬度去除率从57%下降至48%,总硬度去除率从73%下降至61%,Mg2+去除率从16%下降为13%。SiO32-的存在对钙硬度去除几乎没有影响。EDTMPA阻垢剂的存在会降低钙硬度的去除率，提高阻垢率。该实验体系对SiO32-和磷的去除作用很小。
Abstract：The presence of various ions in the actual industrial cooling circulating water has an impact on the removal of calcium hardness. In this study, the effects of conductivity, Mg2+,HCO~-3, SiO32- and EDTMPA scale inhibitors on the descaling performance of the electrochemical-microfiltration coupling system were studied. When the conductivity increased from 2000 μS/cm to 5000 μS/cm, the calcium hardness removal rate dropped from 79% to 76%. In addition, increasing the concentration of HCO~-3 facilitated the removal of calcium hardness. In contrast, the calcium hardness removal efficiency reduced from 57% to 48% as the concentration of Mg2+ increased from 100 mg/L to 400 mg/L, with the total hardness removal efficiency decreasing from 73% to 61% and the concentration of Mg2+ decreasing from 16% to 13%. The presence of SiO32- had almost no effect on the removal of calcium hardness. EDTMPA scale inhibitor would reduce the hardness removal efficiency in the water body and increase the anti-scaling efficiency. The electrochemical-microfiltration coupling system had little effect on the removal of SiO32- and phosphorus.
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基本信息:
中图分类号:X703
引用信息:
[1]苏晴,唐沂珍,江波.复杂水体环境中电化学-微滤耦合工艺除垢性能研究[J].青岛理工大学学报,2022,43(06):108-113+151.
基金信息:
山东省重点研发计划(重大科技创新工程)项目(2020CXGC011204)
2021-05-06
2021
2022-09-29
2022
2
2022-12-30
2022-12-30