title: Advanced treatment of effluents from an industrial park wastewater treatment plant by ferrous ion activated persulfate oxidation process.
abstract: The advanced oxidation technology, ferrous ion (Fe(II)) activated persulfate (PS) producing sulfate radicals, was used for the advanced treatment of effluent from an integrated wastewater treatment plant in a papermaking industrial park. Separate and interactive effects of PS dosage, Fe(II)/PS ratio and initial pH on chemical oxygen demand (COD) removal were analyzed by the response surface methodology (RSM). The results showed that Fe(II)-PS system was effective in COD removal from the secondary effluent. PS dosage was the most dominant factor with positive influence on COD removal, followed by initial pH value. The optimum conditions with COD removal of 54.4% were obtained at PS/COD of 2.2, initial pH of 6.47 and Fe(II)/PS of 1.89. UV-visible spectrum analysis showed that after RSM optimization, Fe(II)-PS system effectively degraded large organic molecules into small ones, and decreased humification degree of the effluent. Three-dimensional fluorescence analysis demonstrated that aromatic protein and fulvic substances were fully decomposed by the Fe(II)-PS treatment.
authors.affiliation: College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China E-mail: zhouzhen@shiep.edu.cn.
authors.forename: Songmei
authors.initials: S
authors.lastname: Zhu
authors.affiliation: College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China E-mail: zhouzhen@shiep.edu.cn.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Yangtze River Basin Water Resource Protection Bureau, Shanghai 200120, China.
authors.forename: Haitao
authors.initials: H
authors.lastname: Jiang
authors.affiliation: Shanghai Academy of Environmental Sciences, Shanghai 200233, China.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Ye
authors.affiliation: College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China E-mail: zhouzhen@shiep.edu.cn.
authors.forename: Jiamin
authors.initials: J
authors.lastname: Ren
authors.affiliation: College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China E-mail: zhouzhen@shiep.edu.cn.
authors.forename: Lingyun
authors.initials: L
authors.lastname: Gu
authors.affiliation: College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China E-mail: zhouzhen@shiep.edu.cn.
authors.forename: Luochun
authors.initials: L
authors.lastname: Wang
mesh_terms: D057919:Biological Oxygen Demand Analysis; D005296:Ferrous Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000032:analysis*; D010084:Oxidation-Reduction; D013431:Sulfates / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D005296:Ferrous Compounds; D007220:Industrial Waste; D013431:Sulfates; D062065:Wastewater; C069025:sulfate radical