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

2018 International Conference on Air Pollution and Environmental Engineering

生态环境科学

Jia, Cuijie^1,4 ; Yuan, Bo^1,2,3 ; Zhang, Fengming^4 ; He, Chuan^1 ; Su, Chuangjian^4 ; Chen, Jiulin^4

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

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

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/208/1/012063/pdf
DOI  :  10.1088/1755-1315/208/1/012063

学科分类：环境科学（综合）

来源: IOP

【 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.