化工学报 ›› 2020, Vol. 71 ›› Issue (7): 3322-3332.DOI: 10.11949/0438-1157.20191259

• 能源和环境工程 • 上一篇    下一篇

复合改性生物砂滤池对突发PhACs痕量污染的去除效果分析

徐宇峰1,2(),郭鸣1,王让3,肖伟4,刘元慧1,李思敏1()   

  1. 1.河北工程大学能源与环境工程学院,河北 邯郸 056038
    2.中国科学院生态环境研究中心环境模拟与污染控制国家重点联合实验室,北京 100085
    3.中国建筑科学研究院有限公司建筑环境与节能研究院,北京 100013
    4.爱土工程环境科技有限公司,北京 100025
  • 收稿日期:2019-10-23 修回日期:2020-03-03 出版日期:2020-07-05 发布日期:2020-07-05
  • 通讯作者: 李思敏
  • 作者简介:徐宇峰(1984—),男,博士,副教授,jackstarfly@126.com
  • 基金资助:
    中国博士后科学基金项目(2019M650860);河北省自然科学基金项目(E2019402410);邯郸市科学研究与发展计划项目(1623209044-2);河北省重点研发计划节能环保与科技治霾专项项目(18273806D)

Analysis on removal effect of micro-contamination of PhACs by composite modified bio-sand filter

Yufeng XU1,2(),Ming GUO1,Rang WANG3,Wei XIAO4,Yuanhui LIU1,Simin LI1()   

  1. 1.College of Energy and Environmental Engineering, Hebei University of Engineering, Handan 056038, Hebei, China
    2.State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085, China
    3.Institute of Building Environment and Energy Efficiency, China Academy of Building Research, Beijing 100013, China
    4.Love Soil Engineering Environmental Technology Co. , Ltd. , Beijing 100025, China
  • Received:2019-10-23 Revised:2020-03-03 Online:2020-07-05 Published:2020-07-05
  • Contact: Simin LI

摘要:

针对石英砂(OQS)表面特征及特性,进行表面形貌重构改性及表面涂覆改性,并根据涂覆改性差异,制备出亲水改性砂(IMS)、疏水改性砂(OMS)、阳离子改性砂(CMS)和氨基改性砂(AMS)。以实验室模拟二级处理出水为研究对象,考察以6种石英砂[4种复合改性砂、表面重构砂(对照1)及原始砂(对照2)]为核心的生物砂滤工艺对碳氮磷及突发药物活性物质(PhACs)的削减效果,分析了各组生物砂滤池微生物种群结构,并进行了生态风险评估。结果表明,各类工艺对常规污染物的去除率在24.22%~90.35%之间,CM-BSF对常规污染物的去除效果最好;6种生物砂滤工艺对5大类12种PhACs的去除率在7.9%~50.3%之间,改性砂滤工艺CM-BSF去除效果更好;高通量检测表明各组微生物物种高度相似,但丰度有差异,总体来说,具备PhACs降解能力的功能菌在复合改性石英砂覆膜生物样品中的丰度较高;通过生态风险评价方法分析,CM-BSF工艺出水产生生态风险最小。

关键词: 复合改性, PhACs, 生物膜, 生物反应器, 二级出水

Abstract:

Aiming at the surface characteristics and properties of quartz sand (OQS), surface morphology reconstruction and surface coating modification were performed. According to the coating modification difference, hydrophilic modified sand (IMS), hydrophobic modified sand (OMS), cationic modified sand (CMS) and amino modified sand (AMS) were prepared. The laboratory simulated secondary treatment effluent was taken as the research object, and the biological sand filtration process centering on 6 kinds of quartz sand [4 kinds of composite modified sand, surface reconstituted sand (control 1), and original sand (control 2)] was investigated. The reduction effect of carbon, nitrogen, phosphorus and sudden pharmacologically active substances (PhACs), the microbial population structure of each group of bio-sand filters was analyzed, and ecological risk assessment was performed. The results show that the removal rate of conventional pollutants by various processes is between 24.22%—90.35%, and the removal effect of CM-BSF on conventional pollutants is the best; 6 types of biological sand filtration processes remove 12 types in 5 categories of PhACs. The rate is between 7.9%—50.3%, and the removal effect of CM-BSF by modified sand filtration process is better. High-throughput testing shows that the microbial species in each group are highly similar, but the abundance is different. Generally speaking, it has PhACs degradation ability. The abundance of the functional bacteria in the composite modified quartz sand-covered biological samples is relatively high. According to the analysis of the ecological risk assessment method, the ecological risk of effluent from the CM-BSF process is the lowest.

Key words: composite modification, PhACs, biofilm, bioreactor, secondary effluent

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