复杂水体环境中电化学-微滤耦合工艺除垢性能研究  

Study on the descaling performance of electrochemical-microfiltration coupling process in complex water environment

作　　者：苏晴 唐沂珍[1] 江波 SU Qing;TANG Yizhen;JIANG Bo(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525

出　　处：《青岛理工大学学报》2022年第6期108-113,151,共7页Journal of Qingdao University of Technology

基　　金：山东省重点研发计划(重大科技创新工程)项目(2020CXGC011204)。

摘　　要：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、Mg^(2+)、HCO^(-)_(3)、SiO^(2-)_(3)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Mg^(2+)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%,Mg^(2+)去除率从16%下降为13%。SiO^(2-)_(3)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SiO^(2-)_(3)和磷的去除作用很小。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,Mg^(2+),HCO^(-)_(3),SiO^(2-)_(3)and EDTMPA scale inhibitors on the descaling performance of the electrochemical-microfiltration coupling system were studied.When the conductivity increased from 2000μS/cm to 5000μS/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 Mg^(2+)increased from 100 mg/L to 400 mg/L,with the total hardness removal efficiency decreasing from 73%to 61%and the concentration of Mg^(2+)decreasing from 16%to 13%.The presence of SiO^(2-)_(3)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 SiO^(2-)_(3)and phosphorus.

关 键 词：电化学 除垢 钙硬度 去除 

分 类 号：X781.1[环境科学与工程—环境工程]