[1]王悦,王海,石烁辉,等.反硝化滤池反冲洗效能综合影响因素及微生物种群[J].中国给水排水,2021,37(1):76-80.
　WANG Yue,WANG Hai,SHI Shuo-hui,et al.Comprehensive Influencing Factors of Backwashing Efficiency of Denitrifying Biofilter and Its Microbial Community[J].China Water & Wastewater,2021,37(1):76-80.
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反硝化滤池反冲洗效能综合影响因素及微生物种群

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第1期 页码: 76-80 栏目: 出版日期: 2021-01-01
Title:
Comprehensive Influencing Factors of Backwashing Efficiency of Denitrifying Biofilter and Its Microbial Community
作者:
王悦，王海，石烁辉,黄韬，何磊，周健
(重庆大学三峡库区生态环境教育部重点实验室,重庆400045)
Author(s):
WANG Yue，WANG Hai，SHI Shuo-hui,HUANG Tao，HE Lei，ZHOU Jian
(Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment，Chongqing University， Chongqing 400045， China)
关键词:
反硝化生物滤池; 气水联合反冲洗; 微生物种群; 正交实验; PCR-DGGE
Keywords:
denitrifying biofilter; gas and water combined backwashing; microbial community; orthogonal experiment; PCR-DGGE
摘要:
采用正交实验考察了水冲洗强度、水单独漂洗时间、气水联合冲洗时间、气冲洗强度、滤料粒径对反硝化滤池反冲洗效能及微生物种群的综合影响。结果表明，当以反硝化滤池运行周期、耗水量、系统恢复时间作为反冲洗效能的综合评价指标时，各因素对综合评价指标影响的显著性次序为：水冲洗强度>气水联合冲洗时间>气冲洗强度>滤料粒径>水单独漂洗时间；得出气水联合反冲洗最优工况参数如下：滤料粒径为2~4 mm、气冲洗强度为15 L/(m2·s)、水冲洗强度为10 L/(m2·s)、气水联合冲洗时间为8 min。PCR-DGGE分析结果表明，反冲洗对滤料层生物量、生物种群多样性有显著影响，对滤料层生物活性、微生物种群丰度影响不显著。
Abstract:
Effects of water washing intensity, water washing time, gas and water combined washing time, gas washing intensity, filler particle size on backwashing efficiency and microbial community of denitrifying biofilter were investigated by orthogonal experiment. When the operation cycle, water consumption and system recovery time of the denitrifying biofilter were selected as the comprehensive evaluation index of the backwashing efficiency, the significant order of each factor affecting the comprehensive evaluation index was: water washing intensity, gas and water combined washing time, gas washing intensity, filler particle size and water washing time. The optimum conditions were as follows: particle size of 2-4 mm, gas washing intensity of 15 L/(m2·s), water washing intensity of 10 L/(m2·s), and gas and water combined washing time of 8 min. The results of PCR-DGGE analysis showed that the backwashing had significant effects on the biomass and biodiversity of the filter layer. However, it had little effect on the biological activity and microbial community abundance of the filter layer.

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[1]姚通,余华东,郑元武,等.宁波某化工园区污水厂一级A升级改造工艺中试[J].中国给水排水,2020,36(19):72.
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更新日期/Last Update: 2021-01-01