梁滩河治理工程净化效果及其增温潜势  

Purification effect and global warming potential of Liangtan river treatment project

作　　者：何金峰 石文杰 胡宁 王清华 黄磊[1,2] HE Jin-feng;SHI Wen-jie;HU Ning;WANG Qing-hua;HUANG Lei(College of Resources and Environment,Southwest University,Chongqing 400716,China;Chongqing Engineering Research Center of Rural Cleaning Engineering;不详)

机构地区：[1]西南大学资源环境学院,重庆400716 [2]农村清洁工程重庆市工程研究中心

出　　处：《环境卫生学杂志》2024年第7期609-616,共8页JOURNAL OF ENVIRONMENTAL HYGIENE

基　　金：重庆市教委科学技术研究项目(KJQN202100210);大学生创新创业训练计划项目(S202210635054)。

摘　　要：目的探究“生物转盘+人工湿地”组合工艺对受污染河水的净化效果,明确处理过程中温室气体的排放特征,为生物生态工艺的应用和推广提供技术支撑。方法以梁滩河治理工程为对象,在分析组合工艺对污染物去除效果的基础上,采用顶空法和静态箱法探究处理过程中温室气体释放规律。结果组合工艺对氨氮(NH 4+-N)去除率常年稳定在90%以上,出水浓度达到《地表水环境质量标准》(GB 3838-2002)Ⅱ类标准;对总氮(TN)、总磷(TP)和化学需氧量(COD)去除效果良好,基本达到V类标准。组合工艺排放的温室气体以CO_(2)为主,且气体释放量具有明显季节变化特征,表现为暖季高于寒季。暖季增温潜势(GWP)达2.00×10^(4)g/d,是寒季GWP的2.10倍。N_(2)O、CH 4和CO_(2)年平均释放量分别为2.61、70.64和1.77×10^(4)mg/(m^(3)·d)。结论“生物转盘+人工湿地”组合工艺能实现功能互补,在受污染河水处理中可以综合实现污染物高效净化和温室气体减排。Objective To investigate the purification effect of a combined system of rotating biological contactors and hybrid constructed wetlands on polluted river water,as well as the emission characteristics of greenhouse gases during the treatment process,and to provide technical support for the application and promotion of biological and ecological technology.Methods With Liangtan River treatment project as the subject of investigation,the effect of the combined process in removing pollutants was analyzed,and the headspace and static box method were used to investigate the release pattern of greenhouse gases during the treatment process.Results Throughout the year,the combined process showed a removal rate exceeding 90%for ammonia nitrogen(NH 4+-N),with an effluent concentration that met the Class II standard in the Environmental Quality Standards for Surface Water(GB 3838-2002),and it also showed a good effect in removing total nitrogen(TN),total phosphorus(TP),and chemical oxygen demand(COD)and basically reached the Class V standard.CO_(2)was the primary greenhouse gas emitted by the combined process,and the release amount of gases displayed significant seasonal variations with greater emissions during the warm season.In addition,global warming potential(GWP)reached 2.00×10^(4)g/d in the warm season,which was 2.10 times that in the cold season.The mean annual emissions of N_(2)O,CH 4,and CO_(2)were 2.61,70.64,and 1.77×10^(4)mg/(m^(3)·d),respectively.Conclusion The combined process of rotating biological contactors and hybrid constructed wetlands shows a synergistic effect in achieving efficient pollutant purification and greenhouse gas emission reduction during the treatment of polluted river water.

关 键 词：生物转盘 人工湿地 受污染河水 温室气体 增温潜势 

分 类 号：R122[医药卫生—环境卫生学] R123[医药卫生—公共卫生与预防医学]