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

[摘要] 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.

[发布机构] Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education of PRC, Chongqing, China^1;State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, China^2;Postdoctoral Research Station of Power Engineering and Engineering Thermophysics, Chongqing University, Chongqing, China^3;Guangzhou Institutes of Advanced Technology, Chinese Academy of Science, Guangzhou, China^4

[学科分类] 环境科学（综合）

[关键词] Aspen Plus software;Concentration ratio;Degradation of phenols;Low-temperature multi-effect distillations;Mass concentration;Phenol concentration;Phenol wastewaters;Preheating temperature