引用本文
  • 李金城,陆祖贤,井含佳,刘晨,王怡可.硫铁矿/菱铁矿复合矿源自养反硝化脱氮除磷性能[J].广西科学,2024,31(4):788-796.    [点击复制]
  • LI Jincheng,LU Zuxian,JING Hanjia,LIU Chen,WANG Yike.Autotrophic Denitrification and Phosphorus Removal Performance of Pyrite/Siderite Composite Mineral Sources[J].Guangxi Sciences,2024,31(4):788-796.   [点击复制]
【打印本页】 【在线阅读全文】【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览 16次   下载 17 本文二维码信息
码上扫一扫!
硫铁矿/菱铁矿复合矿源自养反硝化脱氮除磷性能
李金城1, 陆祖贤1, 井含佳1, 刘晨2, 王怡可1
0
(1.桂林理工大学环境科学与工程学院, 广西桂林 541000;2.云南新联环境科技有限公司, 云南昆明 650000)
摘要:
针对城市污水厂生化尾水中硝酸盐氮和磷浓度高、碳氮比(C/N)低的水质特点,提出硫铁自养反硝化与菱铁自养反硝化耦合的复合矿源滤料自养反硝化工艺。通过批次实验探究硫铁矿/菱铁矿复合矿源自养反硝化系统在不同C/N和不同水力停留时间(Hydraulic Retention Time,HRT)下的脱氮除磷性能。结果表明,复合矿源滤料具有较强的同步脱氮除磷性能,当C/N从0.8-1.2提高至4.8-5.2时,硝酸盐氮(NO-3-N)平均去除率从47.82%提高至98.2%;HRT为6 h和8 h时,对NO-3-N的去除率分别可达到87.8%和96.3%;系统出水总磷(TP)低于0.3 mg/L,满足《地表水环境质量标准》(GB 3838-2002)Ⅳ类标准,且具有稳定水体pH值的作用,出水pH值维持在7-8。微生物群落分析显示,反应器内的优势菌属为硫杆菌属(Thiobacillus)、长绳菌属(Longilinea)、硫单胞菌属(Sulfurimonas)、土生单胞菌属(Terrimonas)和热单菌胞菌属(Thermomonas),其所占样品微生物总量比例分别为20.88%、4.11%、4.76%、3.44%和2.24%。硫铁矿/菱铁矿作为复合矿源滤料可以实现对生化尾水中氮和磷的深度处理。
关键词:  硫铁矿  菱铁矿  水力停留时间(HRT)  碳氮比(C/N)  脱氮除磷
DOI:10.13656/j.cnki.gxkx.20240919.002
投稿时间:2023-09-30修订日期:2023-11-19
基金项目:桂林市科学研究与技术开发计划项目(20220124-7,20220114-3)和新疆重大科技专项(2016A03008-1)资助。
Autotrophic Denitrification and Phosphorus Removal Performance of Pyrite/Siderite Composite Mineral Sources
LI Jincheng1, LU Zuxian1, JING Hanjia1, LIU Chen2, WANG Yike1
(1.College of Environmental Science and Engineering, Guilin University of Technology, Guilin, Guangxi, 541000, China;2.Yunnan Xinlian Environmental Technology Co., Ltd., Kunming, Yunnan, 650000, China)
Abstract:
In view of the high nitrate nitrogen and phosphorus concentrations and low Carbon-Nitrogen (C/N) ratio in the biochemical wastewater from a municipal sewage plant,this study proposed an autotrophic denitrification process by coupling the autotrophic denitrification of pyrite with the autotrophic denitrification of siderite.Batch experiments were carried out to evaluate the nitrogen and phosphorus removal performance of the autotrophic denitrification system with pyrite/siderite composite mineral sources under different Hydraulic Retention Time (HRT) and C/N ratios.The results showed that the composite mineral sources had strong capacity of simultaneously removing nitrogen and phosphorus.Specifically, the average Nitrate nitrogen (NO-3-N) removal rate increased from 47.82% to 98.2% when the C/N ratio increased from 0.8-1.2 to 4.8-5.2,and the removal rates of NO-3-N reached 87.8% and 96.3%,respectively,at the HRT of 6 h and 8 h. The total phosphorus in the effluent of the system was less than 0.3 mg/L,which met the Class Ⅳ standard of Environmental Quality Standards for Surface Water (GB 3838-2002).Moreover,the composite mineral sources demonstrated the function of stabilizing pH value,maintaining the effluent at pH 7-8.Microbial community analysis showed that the dominant bacteria in the reactor were Thiobacillus,Longilinea,Sulfurimonas,Terrimonas and Thermomonas,with the relative abundance of 20.88%,4.11%,4.76%,3.44% and 2.24%,respectively.Pyrite/siderite as composite mineral sources can achieve deep treatment of nitrogen and phosphorus in biochemical wastewater.
Key words:  pyrite  siderite  Hydraulic Retention Time(HRT)  Carbon-Nitrogen(C/N)ratio  nitrogen and phosphorus removal

用微信扫一扫

用微信扫一扫