电解法制高纯二氧化氯工艺在水处理中的应用  

Application of preparation process of high pure chlorine dioxide by electrolysis method in water treatment

作　　者：刘艳霞[1] 韩瑞雄[2] 赵红[3] 周俊波[4] 

机构地区：[1]北京化工大学北方学院,北京101601 [2]中国科学院高能物理研究所 [3]北京城市排水集团有限责任公司 [4]北京化工大学机电工程学院

出　　处：《无机盐工业》2011年第12期57-59,共3页Inorganic Chemicals Industry

基　　金：化工与环保北京市技术转移中心资助项目(合同号:000208)

摘　　要：为了开发经济实用的二氧化氯消毒工艺,对电解法制备高纯二氧化氯工艺在水处理中的运用进行了研究。在最佳条件下,电解氯酸盐自动催化循环制备的二氧化氯纯度可达98%左右。通过二氧化氯杀菌除藻试验,讨论了二氧化氯用量以及原水pH对细菌、叶绿素a、藻类的去除率的影响。结果表明,二氧化氯用量在2 mg/L以上时,3者的去除率均达到90%以上。当二氧化氯用量为2 mg/L、原水pH为6～9时,3者的去除率不发生显著变化,并且二氧化氯的剩余质量浓度均控制在0.5 mg/L以下。消毒成本:生产1 kg二氧化氯成本可以控制在6元以内,当二氧化氯用量在0.5～2 mg/L时,1 t水的消毒成本为0.003～0.012元。To develop an economical and practical disinfection technology of chlorine dioxide, the application of preparation process of high pure chlorine dioxide by electrolysis method in water treatment was studied. Under the best conditions, the purity of chlorine dioxide, which was prepared by electrolysis of chlorate solution with auto-catalytic cycling, can reach about 98%. Through the experiments of algae removal and sterilization, the influences of concentration of chlorine dioxide and pH of raw water on the removal rate of bacteria, chlorophyll A, and algal were discussed. Results showed that when the mass concentration of chlorine dioxide was above 2 rag/L, the removal rates of bacteria, chlorophyll A, and algal could all reached above 90%. When the mass concentration of chlorine dioxide was 2 mg/L and pH of raw water was at 6 - 9 ,the removal rates of them could not occur significant change, and the mass concentration of residual/chlorine dioxide was all under 0.5 mg/L. Though accounting for the cost of water disinfection, the cost of per kilogram chlorine dioxide in the process can be controlled less than RMB 6 Yuan. When the invested amount of chlorine dioxide was at 0.5 - 2 mg/L, and the cost of per ton water disinfection was only RMB O. 003 ~ 0. 012 Yuan.

关 键 词：二氧化氯 电解 水处理 杀菌 除藻 

分 类 号：TQ124.4[化学工程—无机化工]