Title: Application of solvent extraction in incineration of salty organic wastewater
Abstract: Evaporation residues contain high concentration inorganic salts and non-volatile organic compounds. An extraction-desalination method for para-nitrophenol (PNP) wastewater was presented. Effect of different volume ratio of solvent and wastewater and different concentration of NaCl was discussed. Incineration of the desalinated residue was incinerated in a FBC incinerator. The experiment results show that one-stage and two-stage PNP extraction rate is decreased when the volume ratio of wastewater and solvent is increased. When the initial concentration of NaCl is increased from 60 g·L -1 to 200 g·L -1 , one-stage and two-stage extraction efficiency is increased from 94.76% and 99.82% to 97.53%and 99.92%, respectively. Extraction efficiency of n-octanol is less than ethyl acetate. The used extraction solvent can be recycled. When temperature of the incinerator is increased from 700 ℃ to 850 ℃,combustion efficiency of the steam is increased from 86.34% to 99.96%,while combustion efficiency of the steam and the residue is increased from 90.16% to 99.99%.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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