title: Laboratory-scale experiments applied to the design of a two-stage submerged combustion evaporation system.
abstract: To simulate a submerged combustion evaporation (SCE) process under laboratory conditions, this study conducted three kinds of indirect-heating evaporation experiments, including normal evaporation, vacuum evaporation, and gas-carrying evaporation experiments on mature municipal solid waste (MSW) landfill leachate. The results showed that the organic concentrations in terms of COD in condensates were always very high at the beginning, then decreased rapidly, and stabilized at a low level, which suggests that only the forepart of vapors need to be safely treated to control the discharge of organic pollutants. This study applied the process in developing a two-stage SCE system, which has been implemented for the treatment of biologically pretreated and concentrated leachate from Membrane Bioreactor (MBR) and Reverse Osmosis (RO) combined process in the Beishenshu MSW Landfill, Beijing, China. The result shows that the two-stage SCE system can successfully further concentrate refractory organic matter in concentrated leachate and remove volatile organics from the vapor.
authors.affiliation: Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. yuedb@tsinghua.edu.cn
authors.forename: Dongbei
authors.initials: D
authors.lastname: Yue
authors.forename: Yudong
authors.initials: Y
authors.lastname: Xu
authors.forename: Rasool Bux
authors.initials: RB
authors.lastname: Mahar
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Liu
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Nie
mesh_terms: D007753:Laboratories; D008962:Models, Theoretical; D009930:Organic Chemicals / Q000032:analysis; D012037:Refuse Disposal; D012989:Soil Pollutants / Q000032:analysis; D014835:Volatilization
chemical_list: D009930:Organic Chemicals; D012989:Soil Pollutants