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剩余污泥胞外聚合物回收:藻酸钠正渗透分离的影响因素

曹达啟 孙秀珍 方晓敏 靳景宜 杨晓璇 郝晓地

曹达啟, 孙秀珍, 方晓敏, 靳景宜, 杨晓璇, 郝晓地. 剩余污泥胞外聚合物回收:藻酸钠正渗透分离的影响因素[J]. 环境工程, 2020, 38(8): 71-75. doi: 10.13205/j.hjgc.202008012
引用本文: 曹达啟, 孙秀珍, 方晓敏, 靳景宜, 杨晓璇, 郝晓地. 剩余污泥胞外聚合物回收:藻酸钠正渗透分离的影响因素[J]. 环境工程, 2020, 38(8): 71-75. doi: 10.13205/j.hjgc.202008012
CAO Da-qi, SUN Xiu-zhen, FANG Xiao-min, JIN Jing-yi, YANG Xiao-xuan, HAO Xiao-di. RECOVERY OF EXTRACELLULAR POLYMERIC SUBSTANCE: IMPACT FACTORS IN FORWARD OSMOSIS SEPARATION OF SODIUM ALGINATE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 71-75. doi: 10.13205/j.hjgc.202008012
Citation: CAO Da-qi, SUN Xiu-zhen, FANG Xiao-min, JIN Jing-yi, YANG Xiao-xuan, HAO Xiao-di. RECOVERY OF EXTRACELLULAR POLYMERIC SUBSTANCE: IMPACT FACTORS IN FORWARD OSMOSIS SEPARATION OF SODIUM ALGINATE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 71-75. doi: 10.13205/j.hjgc.202008012

剩余污泥胞外聚合物回收:藻酸钠正渗透分离的影响因素

doi: 10.13205/j.hjgc.202008012
基金项目: 

北京"未来城市设计高精尖中心"项目;北京市高水平创新团队"传统村落保护与居民建筑功能提升关键技术研究项目"。

详细信息
    作者简介:

    曹达啟(1988-),男,工学博士,副教授,主要研究方向为膜分离技术、污水资源化以及痕量有机污染物迁移与转化。caodaqi@bucea.edu.cn

    通讯作者:

    曹达啟(1988-),男,工学博士,副教授,主要研究方向为膜分离技术、污水资源化以及痕量有机污染物迁移与转化。caodaqi@bucea.edu.cn

RECOVERY OF EXTRACELLULAR POLYMERIC SUBSTANCE: IMPACT FACTORS IN FORWARD OSMOSIS SEPARATION OF SODIUM ALGINATE

  • 摘要: 剩余污泥中胞外聚合物(EPS)具有巨大的回收价值。然而,回收的EPS溶液含水率接近100%,其浓缩脱水是亟待解决的关键问题。正渗透(FO)膜分离具有膜污染小、浓缩率高、耐高浓度等特点,已成为新兴的节能脱水技术。提出了一种新型的死端FO浓缩方式,调查了模拟EPS(藻酸钠)的正渗透脱水行为。结果显示:FO膜活性层朝向料液侧时水通量下降速率小;类似于外加压力驱动,扫流模式可以减轻FO膜污染,提高水通量;为防止FO膜的拉伸变形,隔板需进行合理设计(如适宜的开孔率),以缓解水通量的下降;不同于外加压力驱动,尽管Ca2+也可减轻膜污染,但效果有限。
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  • 收稿日期:  2020-03-20

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