The Research Of The Effects And Influencing Factors Of Fenton Advanced Oxidation Technologies For The Removal Of Iron And Manganese In Mine Water

Iron content, manganese content are usually out of standard in mine water,the excessive content of iron and manganese brings serious damage for our life and environment.The main purpose of this thesis is to research how to remove iron and manganese elements from mine water by Fenton reagent, and a static beaker experiment method was used. Through experiments and researches, it was be found that the additive amount of H2O2, the additive ratio of H2O2 versus Fe2+, the initial pH value, the reaction duration and the reaction temperature are main factors effect Fenton reagent oxidation reaction. When the additive amount of H2O2 is 13mmol / L, the pH value is 5, the reaction temperature is 25℃, the reaction duration is 15 minutes, the removal rate of Fe2+ ions is up to 95%; In the experiments of the effects of Fenton reagents to the removal rate of manganese in mine water , the optimum process conditions can be determined by orthogonal test method: the additive amount of H2O2 is 12 mol / L, the additive ratio of H202 versus Fe2+ is 3:1, the pH value is 4.5, the reaction temperature is 30℃, the reaction duration is 10 minutes, the removal rate of Mn2+ is up to 78%.This thesis also studies the treatment of Manganese in mine water with UV-Fenton reagent, and finds that utilize UV light in the Fenton system can increase the removal rate of Mn2+ in waste water, the maximum removal rate of Mn2+ is up to 93%, and increased by 15% than Fenton reagent. In the conditions of UV-Fenton, the additive amount of H2O2 can be reduced by 18% than the simple Fenton oxidation reaction. At the same time, under the UV conditions the intensity of reaction is much higher than the Fenton reagent reaction.The main purpose of this thesis is to research how to remove iron and manganese elements from mine water by Fenton reagent. Through experiments and researches, it was be found that the additive amount of H2O2, the additive ratio of H2O2 versus Fe2+, the initial pH value, the reaction duration and the reaction temperature are main factors effect Fenton reagent oxidation reaction.