Energy,exergy,economic and environmental comprehensive analysis and multi-objective optimization of a sustainable zero liquid discharge integrated process for fixed-bed coal gasification wastewater

作     者：Yanli Zhang Zhengkun Hou Dong Yao Xiaomin Qiu Hongru Zhang Peizhe Cui Yinglong Wang Jun Gao Zhaoyou Zhu Limei Zhong 

作者机构：College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Chemical and Environmental EngineeringShandong University of Science and TechnologyQingdao 266590China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2023年第58卷第6期

页      面：341-354页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(22078166 22178188) 

主　　题：Waste water Case study Energy Exergy Economy Environment 

摘      要：For a long time,China s regional water resource imbalance has restricted the development of coal chemical industry,and it is imperative to achieve zero liquid discharge(ZLD).Therefore,the game relationship between technical indicators,costs and emissions in ZLD process of fixed-bed coal gasification wastewater treatment process should be explored in *** to the accurate model,the simulation for ZLD of fixed-bed coal gasification wastewater treatment process is established,and this process is assessed from the perspective of thermodynamics,economy,and *** total energy consumption of ZLD process before optimization is 4.032×10^(8)*** results of exergy analysis show exergy destruction of ZLD process is 94.55%.For economic and environmental results,the total annual cost is 1.892×10^(7)USD·a^(-1)and the total environmental impact is 4.782×10^(-8).The total energy consumption of the optimal six-step ZLD process based on multi-objective optimization is 4.028×10^(8)*** CO_(2)content in the treated wastewater is 0.1%.This study will have an important role in promoting the establishment of the ZLD process for coal chemistry industry.