工业水处理 ›› 2022, Vol. 42 ›› Issue (1): 179-186. doi: 10.19965/j.cnki.iwt.2021-0312

• 经验交流 • 上一篇    

基于梯级用水的工业水系统节水优化研究

朱丽姗1(), 刘军1,2, 侯保灯1(), 肖伟华1, 马静1   

  1. 1. 中国水利水电科学研究院, 流域水循环模拟与调控国家重点实验室, 北京 100038
    2. 广西大学土木建筑工程学院, 广西 南宁 530004
  • 收稿日期:2021-11-27 出版日期:2022-01-20 发布日期:2022-03-15
  • 作者简介:

    朱丽姗(1994— ),硕士。E⁃mail:

    侯保灯,高级工程师,博士。E⁃mail:

    李亚娟(1983— ),高级工程师。E-mail:

  • 基金资助:
    国家重点研发计划(2018YFE0196000); 国家自然科学基金项目(51625904)

Optimization of water saving in industrial water system based on cascade use of water

Lishan ZHU1(), Jun LIU1,2, Baodeng HOU1(), Weihua XIAO1, Jing MA1   

  1. 1. China Institute of Water Resources and Hydropower Research, Beijing 100038, China
    2. School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
  • Received:2021-11-27 Online:2022-01-20 Published:2022-03-15

摘要:

水系统节水优化是一种从系统层面分析水系统节水潜力的方法,借助数学模型可实现节水的量化研究。阐述了一种基于外排水再利用的水系统节水优化模型,并利用Vogel方法实现模型的求解。以火电企业为典型用水案例进行研究,将案例企业用水系统划分为6个子系统(循环冷却水系统、灰渣水系统、化学除盐水系统、脱硫用水系统、生活消防用水系统、其他杂用水系统),在污水排放改造的基础上构建了基于成本最优的节水优化模型并进行了求解。经案例研究发现,优化带来的经济效益最为明显,其次是节水、生态效益。案例企业优化后综合发电耗水、总用水成本、新鲜水取用量降幅分别为10.3%、13.6%、11.2%,对缓解当地水环境污染以及地下水开采压力具有积极意义。

关键词: 工业节水, 梯级用水, 水系统节水优化, Vogel最佳路径分析

Abstract:

Water saving optimization of water system is a method to analyze the water saving potential of water system from the system level,and the quantitative study of water saving can be realized with the help of mathematical model. An optimization model of water system water saving based on the reuse of external drainage was presented,and the Vogel method was used to solve the model. A case study was carried out with a thermal power enterprise as a typical water use case. The water use system of the case enterprise was divided into six water sub-systems(circulating cooling water system,ash slag water system,chemical desalination water system,desulfurization water system,domestic fire water system,and other miscellaneous systems),and a cost-optimized water-saving optimization model was constructed and solved based on the sewage discharge transformation. The case study found that the economic benefits brought by optimization were the most obvious,followed by water saving and ecological benefits. After the optimization of the case companies,the reduction rates of comprehensive power generation water consumption,total water cost,and fresh water consumption were 10.3%,13.6%,11.2%,respectively,which is of positive significance for alleviating local water environmental pollution and pressure on groundwater extraction.

Key words: industrial water saving, cascade use of water, water saving optimization of water system, Vogel transportation route analysis

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