化工进展 ›› 2020, Vol. 39 ›› Issue (7): 2858-2866.DOI: 10.16085/j.issn.1000-6613.2019-1522

• 资源与环境化工 • 上一篇    下一篇

弹性填料对ABR去除重金属及颗粒污泥的影响

张超1(), 师旭军1, 张国珍1,2(), 武福平1, 晏雯雯1, 黄星星1   

  1. 1.兰州交通大学环境与市政工程学院,甘肃 兰州 730070
    2.寒旱地区水资源综合利用教育部工程研究中心,甘肃 兰州 730070
  • 出版日期:2020-07-05 发布日期:2020-07-10
  • 通讯作者: 张国珍
  • 作者简介:张超(1992—),男,博士研究生,研究方向为水处理与回用技术。E-mail:1403916177@qq.com
  • 基金资助:
    国家自然科学基金(51768031);甘肃省重点研发计划(17YF1NA056)

Effect of elastic filler on heavy metals removal and granular sludge by ABR

Chao ZHANG1(), Xujun SHI1, Guozhen ZHANG1,2(), Fuping WU1, Wenwen YAN1, Xingxing HUANG1   

  1. 1.School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
    2.Engineering Research Center for Comprehensive Utilization of Water Resource in Cold and Arid Regions of Ministry of Education, Lanzhou 730070, Gansu, China
  • Online:2020-07-05 Published:2020-07-10
  • Contact: Guozhen ZHANG

摘要:

为研究弹性填料对厌氧折流板反应器(ABR)去除重金属及颗粒污泥的影响,采用有弹性填料ABR和无弹性填料ABR进行对比。结果表明,弹性填料有利于提高ABR去除生活污水中的多数重金属;两组ABR各隔室中的厌氧颗粒污泥粒径沿着水流方向逐渐减小,但多介于0.75~1.25mm之间,有弹性填料ABR各隔室中的厌氧颗粒污泥粒径略小于无弹性填料ABR;通过扫描电镜发现,两组ABR第1隔室中的厌氧颗粒污泥表面含有大量的丝状菌,第2~4隔室中的厌氧颗粒污泥表面的丝状菌显著减少,但胞外聚合物的含量有所增加;与无弹性填料ABR相比,有弹性填料ABR各隔室中的厌氧颗粒污泥表面的丝状菌有所减少;通过能谱仪元素分析发现,两组ABR各隔室中的厌氧颗粒污泥表面最主要的元素为C、O和N,此外,还包括Na、Al、P、Ca、Fe、As、Hg和Pb等;与无弹性填料ABR相比,有弹性填料ABR各隔室中的厌氧颗粒污泥表面的重金属元素含量有所减少。

关键词: 弹性填料, 厌氧折流板反应器, 生活污水, 重金属, 颗粒污泥, 粒度分布

Abstract:

Aiming to explore the effect of elastic filler on the removal of heavy metals and granular sludge by ABR (anaerobic baffled reactor), ABR with and without elastic filler were compared. The result showed that elastic filler was beneficial to the removal of most heavy metals from domestic sewage by ABR. The particle size of anaerobic granular sludge in two groups of ABR compartments decreased gradually along the flow direction, but most of them were between 0.75mm and 1.25mm, and the particle size of anaerobic granular sludge in the compartmentsof ABR with elastic filler was slightly smaller than that of ABR without elastic filler. Found by SEM, a large number of filamentous bacteria were found on the surface of anaerobic granular sludge in the first compartment of ABR in the two groups, and the filamentous bacteria on the surface of anaerobic granular sludge in compartments 2,3 and 4 reduced significantly, but the content of extracellular polymer increased. Compared with the ABR without elastic filler, the filamentous bacteria on the surface of anaerobic granular sludge in compartments of ABR with elastic filler were reduced. Found by EPS, the main elements on the surface of anaerobic granular sludge in two groups of ABR compartments were C, O and N. In addition, Na, Al, P, Ca, Fe, As, Hg, and Pb were also included. Compared with the ABR without elastic filler, the content of heavy metals on the surface of anaerobic granular sludge in compartments of ABR with elastic filler was reduced.

Key words: elastic filler, anaerobic baffled reactor, domestic sewage, heavy metal, granular sludge, size distribution

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