Abstract: Supercritical water oxidation (SCWO) method is utilized to treat with high salinity wastewater from coal chemical, crude oil production, food processing and other industries.The effects on simultaneous removal of COD and TDS in high salinity wastewater from different sources are studied.Results show that the removal efficiencies of COD in wastewater from several different sources all exceed 80% when SCWO is used.Of which, the removal efficiencies of COD in coal chemical wastewater and triethanolamine sewage can exceed 91%, and the removal efficiency of COD in oilfield wastewater is more than 88%.Simultaneous removal efficiencies of TDS in several sources of wastewater are all above 85%.The chemical composition of different sources of wastewater is detected, and oxidation effect differences of SCWO to different wastewater are explored in the perspective of the refractory characteristics of organic matters.The reasons for the simultaneous removal of TDS from wastewater are analyzed in the perspective of the characteristics of supercritical water.
张亚朋, 侯吉礼, 崔龙鹏, 王志强, 刘艳芳, 郎子轩. 几种高盐污水超临界水法脱盐降COD实验研究[J]. 现代化工, 2021, 41(10): 209-214.
ZHANG Ya-peng, HOU Ji-li, CUI Long-peng, WANG Zhi-qiang, LIU Yan-fang, LANG Zi-xuan. Experimental study on desalination and COD reduction of several high-salt wastewater by supercritical water method. Modern Chemical Industry, 2021, 41(10): 209-214.
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