期刊论文

Research on Pretreatment of Arsenic from Aqueous Solution by Iron Carbon Microelectrolysis/H_2O_2 Coupled Method

中文

湖南城市学院学报(自然科学版)

1672-7304

2018

27

2

74-78

10.3969/j.issn.1672-7304.2018.02.0017

15C0245:湖南省教育厅科学研究项目 2016JJ6017:湖南省自然科学基金 2017SK2254:湖南省重点研发计划项目

本校为第一机构

采用铁碳微电解/H2O2耦合工艺预处理水溶液中砷,研究了溶液初始p H、铁碳球投加量、曝气流量、H2O2投加量、反应温度和初始总砷（TAs）浓度等因素对砷去除效果的影响﹒结果表明,在铁碳微电解体系中加入H2O2能明显提高水溶液中TAs和三价砷（As（Ⅲ））去除率﹒当溶液初始TAs和As（Ⅲ）浓度分别为539 mg/L和368 mg/L,溶液初始pH为2.5,铁碳球投加量为530 g/L,曝气流量为60 m L/min,H2O2投加量为2 m L,在15℃下曝气反应1 h时,溶液中TAs和As（Ⅲ）去除率分别达到61.94%和55.06%;然而,未加H2O2,在同样条件下处理,TAs和As（Ⅲ）去除率分别为47.07%和41.97%。

The iron-carbon microelectrolysis/H2O2 coupled method was applied in the pretreatment of arsenic from aqueous solution. The effects of factors such as initial p H of the solution, iron carbon ball dosage, aeration flow, H2O2 dosage, reaction temperature and initial TAs concentration on the removal rates of arsenic were investigated. The results show that the removal rates of TAs and As（Ⅲ） can be improved obviously by adding H2O2 to the iron-carbon microelectrolysis system. When the concentrations of TAs and As（Ⅲ） are 539 and 368 mg/L, res...