title: [Advanced Treatment of Effluent from Industrial Park Wastewater Treatment Plant by Ferrous Ion Activated Sodium Persulfate].
abstract: Fe(II) activated sodium persulfate (PS) technology was used for advanced treatment of effluent from industrial park wastewater treatment plant. Separate and combined effects of PS/COD, Fe(II)/PS and pH on COD and TOC removal were analyzed by the response surface methodology. Variations of organic substances before and after Fe(II)-PS oxidation were characterized by UV-Vis spectrometry, gel chromatography and three-dimensional fluorescence. PS/COD and Fe(II)/PS had significant effect on COD removal, while all the three factors had significant effect on TOC removal. The combined effect of PS/COD and pH had significant effect on COD removal. COD and TOC removal efficiencies reached 50.7% and 60.6% under optimized conditions of PS/COD 3.47, Fe(II)/PS 3.32 and pH 6.5. Fe(II)-PS oxidation converted macromolecular organic substances to small ones, and reduced contents of protein-, humic- and fulvic-like substances.
authors.forename: Song-mei
authors.initials: SM
authors.lastname: Zhu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zhou
authors.forename: Ling-yun
authors.initials: LY
authors.lastname: Gu
authors.forename: Hai-tao
authors.initials: HT
authors.lastname: Jiang
authors.forename: Jia-min
authors.initials: JM
authors.lastname: Ren
authors.forename: Luo-chun
authors.initials: LC
authors.lastname: Wang
mesh_terms: D057919:Biological Oxygen Demand Analysis; D005296:Ferrous Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D017670:Sodium Compounds / Q000737:chemistry*; D013431:Sulfates / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D005296:Ferrous Compounds; D017670:Sodium Compounds; D013431:Sulfates; D062065:Wastewater; C024625:sodium persulfate