Research on phenol wastewater treatment by low-temperature multi-effect distillation combining with super-critical water oxidation

• Published in: IOP conference series. Earth and environmental science Vol. 208; no. 1; pp. 12063 - 12068
• Main Authors: Jia, Cuijie, Yuan, Bo, Zhang, Fengming, He, Chuan, Su, Chuangjian, Chen, Jiulin
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 20.12.2018
• Subjects: Degradation; Distillation; Distilled water; Heating; Low temperature; Oxidation; Phenols; Temperature requirements; Wastewater treatment
• ISSN: 1755-1307; 1755-1315; 1755-1315
• DOI: 10.1088/1755-1315/208/1/012063

Based on the mechanism of low-temperature multi-effect distillation combining with super-critical water oxidation (LT-MED&SCWO), a system that disposes phenol wastewater is introduced. Establishing a process of four-effect forward feed LT-MED concentrated phenol waste-water and a SCWO degradation of phenol by Aspen Plus software is essential to compare the effects of in-feed phenol mass concentration, system concentration ratio on phenol concentration ratio and mixing temperature of reaction required for degradation. The study shows that with the increase of in-feed phenol mass concentration, phenol concentration ratio keeps almost constant, 97.7%, but, preheating temperature of the concentrated water decreases when the final product mass phenol concentration is less than 0.5ppm; when system concentration ratio increases, phenol concentration ratio decreases from 99.5%to 96.7%and preheating temperature of the concentrated water also decreases when the final product mass phenol concentration is less than 0.5ppm.