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金属矿山 ›› 2017, Vol. 46 ›› Issue (06): 113-116.

• 矿物工程 • 上一篇    下一篇

Fenton试剂氧化—絮凝法去除水中As(Ⅲ)

李福平1,段武林2,罗小燕2   

  1. 1.江西应用技术职业学院,江西 赣州 341000;2.赣州卓越再生资源综合利用有限公司,江西 赣州 341700
  • 出版日期:2017-06-15 发布日期:2017-09-27
  • 基金资助:

    国家自然科学基金项目(编号:51164014),江西省教育厅项目(编号:GJJ14419)。

As(Ⅲ) Removal in Water by Fenton Oxidation-Flocculation Method

Li Fuping1,Duan Wulin2,Luo Xiaoyan2   

  1. 1.Jiangxi College of Applied Technology,Ganzhou 341000,China;2.Excellence Utilization of Renewable Resources Co.Ltd.,Ganzhou 341700,China
  • Online:2017-06-15 Published:2017-09-27

摘要: 随着地下水砷污染问题的加重,砷污染已成为世界普遍关注的问题。为寻求经济合理的除砷技术,采用Fenton试剂氧化—絮凝法进行了水中As(Ⅲ))的去除试验。当废水初始As(Ⅲ)浓度为0.5 mg/L时,试验确定的最佳除砷条件为,调节废水初始pH=3.0、H2O2用量10 mg/L、Fe2+与H2O2的摩尔比0.2、反应时间10 min,此时As(Ⅲ)去除率为95.17%。采用此最佳条件对赣州某实际废水进行除砷试验表明,As(Ⅲ))去除率可达94.71%,反应后水中As(Ⅲ))浓度为0.004 2 mg/L,低于《GB5749—2006 生活饮用水卫生标准》中0.01 mg/L的标准。Fenton氧化—絮凝法除砷是利用Fenton反应产生的中间产物(包括H2O2、·OH、O2·、·HO2等)将As(Ⅲ)氧化与铁盐絮凝结合起来的一种方法。

关键词: Fenton试剂, 氧化, As(Ⅲ), 絮凝

Abstract: With the deterioration of groundwater arsenic pollution problem,arsenic pollution has become an issue of common concern in the world.To seek for the economic and reasonable arsenic removal technology,Fenton reagent oxidation-flocculation method is used for As (Ⅲ) removal test.Initial wastewater As (Ⅲ) concentration is 0.5 mg/L,optimum arsenic removal condition ensured in experiment is regulating wastewater initial pH=3.0,H2O2 dosage of 10 mg/L,mole ratio of Fe2+ to H2O2 is 0.2,reaction time is 10 min,As (Ⅲ) removal rate was 95.17%.Adopt the best conditions for a actual arsenic bearing wastewater from Ganzhou removal test showed that the As (Ⅲ)) removal rate can reach 94.71%,As(Ⅲ) concentration in water is 0.0042 mg/L,below the standard of 0.01 mg/L in drinking water health standards (GB5749-2006).Fenton oxidation-flocculation arsenic removal is a method using intermediate (including H2O2,·OH,O2·,·HO2,etc.) produced in Fenton reaction to flocculation combined As (Ⅲ) and iron salt.

Key words: Fenton reagent, Oxidation, As(Ⅲ) , Flocculation