PDF下载

[1]王亚军,耿冲冲,许妍,等.不同强化手段对生物滞留池脱氮除磷性能的影响[J].中国给水排水,2020,36(19):77-82.
　WANG Ya-jun,GENG Chong-chong,XU Yan,et al.Effect of Different Enhanced Methods on Efficiency of Denitrification and Phosphorus Removal in Bioretention Cell[J].China Water & Wastewater,2020,36(19):77-82.

点击复制

不同强化手段对生物滞留池脱氮除磷性能的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷期数: 2020年第19期页码: 77-82 栏目: 出版日期: 2020-10-01

Title:: Effect of Different Enhanced Methods on Efficiency of Denitrification and Phosphorus Removal in Bioretention Cell

作者:: 王亚军¹，耿冲冲¹，许妍²，席慕华²，王进喜³; (1.兰州理工大学土木工程学院，甘肃兰州730050；2.东南大学土木工程学院，江苏南京210096；3.兰州文理学院化工学院,甘肃兰州730000)

Author(s):: WANG Ya-jun¹,GENG Chong-chong¹,XU Yan²，XI Mu-hua²,WANG Jin-xi³; (1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050， China; 2. School of Civil Engineering, Southeast University, Nanjing 210096， China； 3. School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730000， China)

关键词:: 生物滞留池; 强化脱氮除磷; 污染负荷; 分散式污水处理

Keywords:: bioretention cell; enhanced denitrification and phosphorus removal; pollution load; decentralized sewage treatment

摘要:: 为了探究不同强化手段对生物滞留池脱氮除磷的影响，引入活性炭、导线、活性炭加导线和内加催化铁（Fe⁰/Fe²⁺）4种组合强化方式,探究生物滞留池对COD、NH₄⁺-N、TN、TP的去除效果。实验结果表明，在厌氧区添加活性炭层可以有效提升系统的反硝化能力，总氮去除率提高8%~23%；好氧区与厌氧区之间增加导线可以促进系统的硝化能力，使出水氨氮浓度降低5%~10%；催化铁可以为反硝化提供电子供体，也能将NO₃^--N还原为NH₄⁺-N；添加活性炭层的强化组对磷的吸附能力明显高于未添加活性炭实验组，其中同时添加活性炭与催化铁实验组的效果最好，对总磷的去除率提高了10%~20%，且在运行期间（180 d）不释磷；氮磷负荷对出水水质有显著影响。低负荷（TN为30 mg/L、TP为2 mg/L）运行时，强化组对总氮和总磷的去除效果明显提高，出水COD与TP能够达到地表水Ⅳ类标准，TN与NH₄⁺-N满足城镇污水排放一级A标准；高负荷（TN为60 mg/L、TP为4 mg/L）运行时，脱氮除磷效果波动明显，但降低氮磷负荷后仍能回到稳态，不同强化手段能较好地增加生物滞留池对于水质变化的适应能力，是小水量分散式污水处理的一种可行方案。

Abstract:: In order to explore the effects of different enhanced methods on denitrification and phosphorus removal in bioretention cell (BRC), four combined enhanced methods, namely addition of activated carbon, wire, activated carbon plus wire and catalytic iron, were introduced to explore their removal effects on COD, NH₄⁺-N, TN and TP in BRC. The addition of activated carbon layer in the anaerobic zone could effectively improve the denitrification ability of the system, and the removal efficiency of TN increased by about 8% to 23%. Nitrification ability of the system could be promoted by adding wires between aerobic zone and anaerobic zone, and?NH₄⁺-N?concentration in the effluent decreased by 5% to 10%. Catalytic iron (Fe⁰/Fe²⁺) could provide electron donor for denitrification and reduce?NO₃^--N to NH₄⁺-N. The phosphorus adsorption capacity of the enhanced group with activated carbon layer was significantly higher than that of the experimental group without activated carbon, among which the experimental group with activated carbon and catalytic iron had the best performance. The removal efficiency of total phosphorus increased by 10% to 20%, and phosphorus was not released during the operation period (180 days). The nitrogen and phosphorus load had a significant effect on the effluent quality. When the system was operated at low load (TN of 30 mg/L and TP of 2 mg/L), the removal of total nitrogen and total phosphorus was significantly improved in the enhanced group. COD and TP concentration in the effluent could meet class Ⅳ standard of surface water, and TN and?NH₄⁺-N could meet grade A standard of urban sewage discharge. When the system was operated at high load (TN of 60 mg/L and TP of 4 mg/L), the removal efficiencies of nitrogen and phosphorus fluctuated obviously. However, it could return to a steady state after reducing nitrogen and phosphorus load. Different enhanced methods can better increase the adaptability of BRC to water quality change, which is a feasible scheme for decentralized sewage treatment with low flow quantity.

相似文献/References:

[1]司艺方,朱梫瑶,冯国光,等.基于中心复合响应曲面法的生物滞留池参数优化[J].中国给水排水,2021,37(13):103.
　SI Yi-fang,ZHU Qin-yao,FENG Guo-guang,et al.Parameters Optimization of Bioretention Pood Based on Central Composite Response Surface Methodology Design[J].China Water & Wastewater,2021,37(19):103.
[2]马晶伟,林潇,施周,等.生物滤池/生物滞留池组合设施控制CSO污染的效果[J].中国给水排水,2021,37(19):131.
　MA Jing-wei,LIN Xiao,SHI Zhou,et al.Control Effect of Combined Process of Biofilter and Bioretention Ponds on CSO Pollution[J].China Water & Wastewater,2021,37(19):131.
[3]张瑞斌,刘清泉,徐强强,等.碳氧调控生物滞留池对径流中氮污染物的去除效果[J].中国给水排水,2023,39(21):117.
　ZHANGRu-bin,LIUQing-quan,XUQiang-qiang,et al.Effect of Carbon and Oxygen Regulated Bioretention Cell on Removal of Nitrogen Pollutants in Surface Runoff[J].China Water & Wastewater,2023,39(19):117.

更新日期/Last Update: 2020-10-01