BER-BCO耦合工艺净化模拟微污染河水及除磷机理研究
Study of BER-BCO Coupled Process for Purifying Simulated Micro-polluted River Water and Phosphorus Removal Mechanism
孙广垠 1潘晓敏 2马柏龙 3王震4
作者信息
- 1. 河北工程大学 河北省水污染控制与水生态修复技术创新中心, 河北 邯郸 056038;河北工程大学 能源与环境工程学院, 河北 邯郸 056038;水资源智慧调控与综合管理省部共建协同创新中心, 河北 邯郸 056038;河北省智慧水利重点实验室, 河北 邯郸 056038
- 2. 河北工程大学 河北省水污染控制与水生态修复技术创新中心, 河北 邯郸 056038;河北工程大学 能源与环境工程学院, 河北 邯郸 056038
- 3. 冀中能源邢台矿业集团工程有限责任公司, 河北 邢台 054000
- 4. 河北工程大学 河北省水污染控制与水生态修复技术创新中心, 河北 邯郸 056038;河北工程大学 能源与环境工程学院, 河北 邯郸 056038;中铁建大桥工程局集团有限公司设计研究院, 天津 300301
- 折叠
摘要
针对传统生物膜法对微污染河水脱氮除磷效率不佳的问题,设计了电极生物膜耦合生物接触氧化(BER-BCO)装置,采用单因素敏感性分析方法评估了不同碳源、电流密度、水力停留时间、填料填充比对工艺脱氮除磷效果的影响,并通过红外光谱表征阳极附近沉淀物表面特征官能团,探究系统除磷机理.结果表明,在使用乙酸钠为碳源、电流密度为 0.09 mA/cm2、水力停留时间控制为 24 h、填料比为 40％的条件下,BER-BCO 系统的脱氮除磷效能得到了显著优化;NH4+-N、TN、TP 的去除率分别达到了 83.10％、56.46％、97.93％;最终出水除TN外均优于《地表水环境质量标准》(GB 3838-2002)中Ⅳ类水质标准;红外光谱分析显示阳极附近形成的含磷沉淀物中含有 Fe-O 键、P-O 键、Fe-OH 键,表明铁阳极具有高效除磷的特性.
Abstract
In response to the poor efficiency of traditional biofilm methods in nitrogen and phosphorus removal from slightly polluted river water,an electrode biofilm coupled biological contact oxidation(BER-BCO)device was designed.The single factor sensitivity analysis method was used to evaluate the effects of different carbon sources,current density,hydraulic retention time,and filler filling ratio on the process's nitrogen and phosphorus removal efficiency.The charac-teristic functional groups on the surface of sediment near the anode were characterized by infrared spectroscopy.The mechanism of systematic phosphorus removal was explored.The results show that the nitrogen and phosphorus removal efficiency of the BER-BCO system was significantly optimized under the conditions of using sodium acetate as the carbon source,current density of 0.09 mA/cm2,hydraulic retention time control of 24 hours,and filler ratio of 40％.The re-moval rates of NH4+-N,TN,and TP reached 83.10％,56.46％,and 97.93％,respectively.The final effluent,except for TN,is superior to the Class Ⅳ water quality standard in GB 3838-2002"Surface Water Environmental Quality Stand-ard".Infrared spectrum analysis shows that the phosphorus containing precipitate formed near the anode contains Fe-O bonds,P-O bonds,and Fe-OH bonds,indicating that the iron anode has the characteristic of efficient phosphorus removal.
关键词
电极生物膜法/生物接触氧化/微污染河水/脱氮除磷/铁阳极Key words
electrode biofilm method/biological contact oxidation/slightly polluted river water/nitrogen and phos-phorus removal/iron anode引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据