title: Application of hydration reaction on the removal of recalcitrant contaminants in leachate after biological treatment.
abstract: Leachate contains amounts of non-biodegradable matters with COD range of 400-1500mg/L after the biological treatment, and should be removed further to attain the Chinese discharge standards. Hydration reaction has the potential to combine and solidify some recalcitrant substances, and thus could be applied as the advanced leachate treatment process. It was found that COD and NH3N decreased from 485 to<250mg/L and 91 to 10mg/L, with the removal rate over 50% and 90% in the first 6d, respectively, and COD and NH3N removal capacity were around 23.7 and 9.2mg/g under the test conditions. The percentage of the substances with low Mn range of<1000 decreased from 32.9% to 3.2% in leachate after hydration reaction. Tricalcium aluminate, tricalcium silicate and dicalcium silicate were the most activity compounds successively for the pollutant removal in leachate, and hydration reaction could be the option for the advanced wastewater treatment process thereafter.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China; The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China. Electronic address: Louworld12@sjtu.edu.cn.
authors.forename: Lou
authors.initials: L
authors.lastname: Ziyang
authors.affiliation: The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
authors.forename: Song
authors.initials: S
authors.lastname: Yu
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China.
authors.forename: Chen
authors.initials: C
authors.lastname: Xiaoliang
authors.affiliation: The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Youcai
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Nanwen
mesh_terms: D064751:Ammonium Compounds / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D008855:Microscopy, Electron, Scanning; D017550:Spectroscopy, Fourier Transform Infrared; D018505:Waste Management; D014866:Waste Products / Q000032:analysis*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D014961:X-Ray Diffraction
chemical_list: D064751:Ammonium Compounds; D014866:Waste Products; D014874:Water Pollutants, Chemical; D014867:Water
keywords: Advanced leachate treatment; Hydration reaction; Recalcitrant contaminants