考虑有效能和环境影响的反渗透脱硼海水淡化操作优化  

System Design and Operation Optimization of Reverse Osmosis Seawater Desalination System Considering Exergy and Environmental Impact

作　　者：杜亚威[1,2,3] 戴江波 李亚新 龚泉羽 邓会宁[1,2,3] 解利昕 DU Yawei;DAI Jiangbo;LI Yaxin;GONG Quanyu;DENG Huining;XIE Lixin(National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization,School of Chemical Engineering and Technology,Hebei University of Technology,300130;Engineering Research Center of Seawater Utilization of Ministry of Education,School of Chemical Engineering and Technology,Hebei University of Technology,300130;Tianjin Key Laboratory of Chemical Process Safety,School of Chemical Engineering and Technology,Hebei University of Technology,300130;Tianjin Key Laboratory of Membrane Science and Desalination Technology,School of Chemical Engineering,Tianjin University,300072:Tianjing,China)

机构地区：[1]河北工业大学化工学院,化工节能过程集成与资源利用国家-地方联合工程实验室,300130 [2]河北工业大学化工学院,海水资源高效利用化工技术教育部工程研究中心,300130 [3]河北工业大学化工学院,天津市本质安全化工技术重点实验室,300130 [4]天津大学化工学院,天津市膜科学与海水淡化技术重点实验室,天津300072

出　　处：《水处理技术》2023年第12期11-18,共8页Technology of Water Treatment

基　　金：国家自然科学基金(21606067);中央引导地方科技发展资金项目(226Z3101G);河北省自然科学基金(B2022202061);河北省引进留学人员资助项目(C20200311);河北省自然科学基金(B2018202120);河北工业大学基本科研业务费资助项目(JBKYTD2001)。

摘　　要：建立了反渗透过程机理模型和产水分流设计的网络模型,对每个设备的有效能损失情况进行分析,由生命周期评估方法将反渗透装置的环境影响量化为吨水温室气体CO_(2)排放量,针对产水需求和进水温度变化,系统流程设计方案同时考虑能耗、装置规模和环境影响,通过调节产水分流比例和操作条件进一步降低能耗和环境影响,提高能量利用效率,使得产水满足饮用水中硼含量的标准,虽然反渗透膜元件有所增加,但能耗可降低13.8%,热力学第二定律效率可由27.96%增加至31.66%,产水生态环境影响可降低13.4%,为中试及工程规模化应用提供技术支撑。A numerical model of reverse osmosis(RO)trans-membrane mechanism and a network model with permeate split design were established.The exergy destruction of each equipment was analyzed,and the environmental impact(greenhouse gas CO_(2) emission per ton of water production)of the RO system was obtained by the life cycle assessment method.A system process considering energy consumption,system size,and environmental impact was obtained,with time variations in water demand and temperature.Energy consumption and environmental impact could be further reduced,and energy utilization efficiency was improved by adjusting the split ratio of the permeates and operating conditions.Although the number of RO modules was increased,the energy consumption could be reduced by 13.8%,the second law of thermodynamics efficiency could be increased from 27.96%to 31.66%,and the environmental impact of water products could be reduced by 13.4%.The proposed method can provide a technical reference for the pilot and industrial applications.

关 键 词：海水淡化 脱硼 运行调度 有效能 环境影响 

分 类 号：P747[天文地球—海洋科学]