大梯度磁滤技术对消毒剂投加量的影响  

The Effect of Great Gradient Magnetic Filtration Technology on Disinfectant Dosage

作　　者：曹勇锋[1] 刘涛[1] 陈秋丽[1] 

机构地区：[1]广州大学土木工程学院市政工程系,广东广州510006

出　　处：《水处理技术》2017年第6期96-99,共4页Technology of Water Treatment

基　　金：广东省普通高校青年创新人才项目(2014KQNCX105)

摘　　要：以珠江水为原水,采用微絮凝-大梯度磁滤工艺和传统给水处理工艺对原水进行处理,比较两工艺对水中COD_(Mn)、大肠杆菌和细菌总数的去除效果;并以次氯酸钠对处理后的水进行消毒,研究大梯度磁滤技术对消毒剂的减量及消毒副产物生成量的影响。结果表明,微絮凝-大梯度磁滤工艺对水中COD_(Mn)、大肠杆菌和细菌总数的处理效果显著,去除率分别为61.6%、99.9%和94.4%,明显优于传统给水处理工艺;次氯酸钠的投加量为3 mg/L时能满足GB5749-2006消毒要求,传统工艺则需要4 mg/L;消毒2 h时三卤甲烷生成量为3.80μg/L,比传统工艺低0.66μg/L;微絮凝-大梯度磁滤工艺对减少消毒剂的投加和消毒副产物生成量的控制起到很好作用。The microflocculation-great gradient magnetic filtration process and the traditional water treatment process were used to treat the raw water from the Pearl River, comparing the removal efficiency of CODMn, E. coli and the total number of bacteria in water, then using sodium hypochlorite to disinfect the treated water, and the effects of great gradient magnetic filter technology on disinfectants decrement and by-products generation were studied. The results showed that, the effects of microflocculation-great gradient magnetic filtration process on CODMn, E. coli and the total number of bacteria removal were remarkable, the removal rate of them was 61.6%, 99.9% and 94.4%, respectively, which was better than the traditional water treatment process. The sodium hypochlorite dosage was 3 mg/L which met the disinfection requirement GB 5749 --2006, by contrast traditional process required 4 mg/L of sodium hypoehlorite. The THMS generation was 3.80μg/L after 2 h disinfection which was lower than the traditional process （4.46μg/L）. The microfloceulation-great gradient magnetic filtration process had a good effect of reducing disinfectant dosing and disinfection by-products production control.

关 键 词：微絮凝-大梯度磁滤工艺 传统给水处理工艺 消毒剂 余氯含量 消毒副产物 三卤甲烷 

分 类 号：TU991.25[建筑科学—市政工程]