适合城市污水的新型磁絮凝处理技术研究  

Research on New Magnetic Flocculation Treatment Technology Suitable for Municipal Wastewater

作　　者：李晓艳[1] LI Xiao-yan(Medical College,Xi’an Siyuan University,Xi’an Shaanxi 710038,China)

机构地区：[1]西安思源学院医学院,陕西西安710038

出　　处：《当代化工》2023年第10期2383-2386,2461,共5页Contemporary Chemical Industry

基　　金：陕西省教育厅专项科研计划项目(项目编号:18JK1102)。

摘　　要：探究了混凝/絮凝和费托合成(Fenton)工艺的组合作为三级处理以生成适合再利用的处理水,该组合工艺从未用于城市污水的消毒。在絮凝剂(FeCl_(3))使用剂量为120 mg·L^(-1)和城市污水的天然p H值(7.14)时,肠道杆菌灭活值≥99%,浊度去除率最高。在25℃下,当使用100 mg·L^(-1)的过氧化氢和7 mg·L^(-1)的铁离子时,肠道杆菌灭活更为有效(90.7%),对照实验表明,铁对于激活过氧化氢以及加快消毒过程非常重要。经过120 min的Fenton反应可以实现最大的肠道杆菌灭活,可以获得少于10 CFU·(100 m L)^(-1)的肠道杆菌值,符合水质再利用要求。The combination of coagulation/flocculation and Fischer-Tropsch(Fenton)processes as tertiary treatment to generate treated water suitable for reuse was investigated,which has never been used for disinfection of actual municipal wastewater.The highest turbidity removal rate was achieved with a flocculant(FeCl_(3))dosage of 120 mg·L^(-1)and the natural pH of the effluent(7.14)with an Enterobacteriaceae inactivation value of≥99%.Enterobacteriaceae inactivation was more effective(90.7%)when 100 mg·L^(-1)hydrogen peroxide and 7 mg·L^(-1)iron ions were used at 25℃.Iron is important to activate hydrogen peroxide and to speed up the disinfection process.The maximum enterobacterial inactivation was achieved after 120 min of Fenton reaction.Enterobacteriaceae values of less than 10 CFU·(100 m L)^(-1)was obtained,meeting water reuse requirements.

关 键 词：絮凝 污水处理 FENTON反应 抑菌 

分 类 号：X703[环境科学与工程—环境工程]