工业水处理 ›› 2022, Vol. 42 ›› Issue (10): 31-37. doi: 10.19965/j.cnki.iwt.2021-0974

• 专论与综述 • 上一篇    下一篇

压力延迟渗透技术在水处理中的应用

路孝振1(), 陈天宇1, 王琳1,2(), 赵路1, 郑成龙1, 张娟1, 陈飞勇2   

  1. 1. 山东建筑大学市政与环境工程学院, 山东 济南 250101
    2. 山东建筑大学资源与环境创新研究院, 山东 济南 250101
  • 收稿日期:2022-08-02 出版日期:2022-10-20 发布日期:2022-11-02
  • 作者简介:

    路孝振(1997— ),硕士研究生。电话:17866619865,E-mail:

    王琳,副教授。E-mail:

  • 基金资助:
    国家自然科学基金青年科学基金项目(51708337); 山东建筑大学博士基金项目(XNBS1629); 山东省“青创人才引育计划”立项建设团队“水环境绿色修复技术研究创新团队”

Application of pressure retarded osmotic technology in water treatment

Xiaozhen LU1(), Tianyu CHEN1, Lin WANG1,2(), Lu ZHAO1, Chenglong ZHENG1, Juan ZHANG1, Feiyong CHEN2   

  1. 1. School of Municipal and Environmental Engineering, Shandong Jianzhu University, Ji’nan 250101, China
    2. Resources and Environment Innovation Institute, Shandong Jianzhu University, Ji’nan 250101, China
  • Received:2022-08-02 Online:2022-10-20 Published:2022-11-02

摘要:

在减少废水排放和获取绿色能源的目标下,压力延迟渗透(PRO)技术作为一种能有效获取盐水中盐差能且符合碳中和发展目标的新兴膜法水处理技术正受到广泛关注。在实际应用中,PRO技术具有产水率高、出水水质好等优点,但技术相对不够成熟的现状导致其对盐差能的转化利用效率较低。为有效实现水和能源的循环利用,介绍了PRO技术的原理及水通量、功率密度等关键指标,对影响PRO技术性能的因素(膜种类、膜朝向、浓差极化和膜污染等)进行了讨论,针对不同膜污染类型,着重分析了有效的预处理及清洗措施;重点综述了PRO技术在海水淡化发电、非常规水处理等水处理领域的实际应用;提出在满足经济可行性的同时,通过优化PRO组合工艺设计、提高整体工艺效率等措施,推动并实现PRO技术在水处理领域的低碳、高效运行。

关键词: 压力延迟渗透, 盐差能, 功率密度, 海水淡化, 发电, 水处理

Abstract:

With the goal of reducing wastewater discharge and harvesting green energy,pressure retarded osmosis(PRO) technology is receiving widespread attention,as an application of membrane in water treatment that can effectively capture the salinity energy in brine and satisfy carbon neutral development goals. In actual practice,PRO technology has the advantages of high water production rate and excellent effluent water quality,but its use of salinity gradients energy was less efficient because of its relatively immature technology. In order to effectively achieve water and energy recycling,this review first introduced the principle of PRO technology and key indicators such as water flux and power density,then discussed the factors affecting the performance of the technology,such as membrane type,membrane orientation,concentration polarization and membrane fouling. The effective pretreatment and cleaning measures for PRO technology were highlighted for different membrane fouling types. This review focused on the practical applications of PRO technology in water treatment,such as desalination and power generation,non-conventional water treatment and other processes. It was proposed to promote and realize the low-carbon and efficient operation of PRO technology in the field of water treatment by optimizing the combined process design of PRO and improving the overall process efficiency,while meeting the economic feasibility.

Key words: pressure retarded osmosis, salinity gradients energy, power density, seawater desalination, power generation, water treatment

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