黄铁矿生物滤池氮磷同步深度处理特性及微生物群落结构

刘斌; 何杰; 李学艳

doi:10.13205/j.hjgc.202203006

黄铁矿生物滤池氮磷同步深度处理特性及微生物群落结构

doi: 10.13205/j.hjgc.202203006

刘斌¹,
何杰²,
李学艳^1, ,

1. 苏州科技大学环境科学与工程学院, 江苏苏州 215002;
2. 江苏省盐城环境监测中心, 江苏盐城 224000

基金项目:

江苏省水处理协同中心项目(XTCXSZ2019-02)

江苏省环境监测科研基金项目(JS201906)

详细信息

作者简介:
刘斌(1996-),男,主要从事环境监测与科研工作。1312267409@qq.com

通讯作者:
李学艳。lxyhit@sina.com

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- 文章访问数: 156
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- 被引次数: 0
出版历程
- 收稿日期: 2021-06-19
- 网络出版日期: 2022-07-07

CHARACTERISTICS OF SIMULTANEOUS TREATMENT OF NITROGEN AND PHOSPHORUS IN PYRITE BIOFILTER AND ITS MICROBIAL COMMUNITY

LIU Bin¹,
HE Jie²,
LI Xueyan^{1
, ,}

1. School of Environment Science and Engineering, Suzhou University of Science and Technology, Suzhou 215002, China;
2. Yancheng Environmental Monitoring Center of Jiangsu Province, Yancheng 224000, China

摘要

摘要: 以黄铁矿为生物滤池的主要填料,对含低浓度NO₃^--N和PO₄^3--P废水进行同步脱氮除磷处理,探讨其启动过程中污染物转化特性及其功能微生物变化。结果表明:经过30 d的运行可实现生物滤池同步脱氮除磷,TN最大去除速率可达到70 g/(m³·d)。HRT控制在6 h以内,可避免NO₂^--N的大量产生。出水ρ(TP)可降至0.2~0.4 mg/L,HRT对滤池中磷的去除几乎未产生影响。SEM-EDX和磷形态分析表明,废水中磷主要是以铁磷化合物的形式去除。功能微生物群落分析表明,硫自反硝化过程的主要功能微生物为Thiobacillus(27.6%)、Sulfurimonas(11.8%)、Thiohalobacter(10.9%)。在有机碳源缺少条件下,该系统是同时从废水去除NO₃^--N和PO₄^3--P的有效途径。
- 生物滤池 /
- 黄铁矿 /
- 硫自养反硝化 /
- 除磷 /
- 微生物群落
Abstract: As the effluent discharge index of sewage treatment plant tends to be more strict, deep denitrification and dephosphorization of tail water gradually becomes an indispensable process. In this study, pyrite was used as the main filler of biofilter to conduct simultaneous denitrification and dephosphorization treatment of wastewater with low concentration of NO₃^--N and PO₄^3--P, and to investigate the pollutant conversion characteristics and functional microbial changes during the start-up process. The results showed that the simultaneous denitrification and dephosphorization of the biofilter could be realized after 30-day operation, and its maximum total nitrogen removal rate reached 70 g/(m³·d). HRT could be controlled within 6 h to avoid mass production of NO₂^--N. HRT had little effect on gradual removal of phosphorus from the biofilter and the effluent total phosphorus concentration reduced to 0.2~0.4 mg/L. SEM-EDX and phosphorus morphology analysis showed that phosphorus was mainly removed in the form of iron and phosphorus compounds. Analysis of functional microbial community showed that Thiobacillus (27.6%), Sulfurimonas (11.8%), Thiohalobacter (10.9%) were the main functional microorganisms in the process of autotrophic denitrification. This system was a promising way to remove NO₃^--N and PO₄^3--P simultaneously from wastewater lack of organic carbon sources.
- biofilter /
- pyrite /
- sulfur autotrophic denitrification /
- phosphorus removal /
- microbial community

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参考文献(19)

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