外场强化生物与生态耦合工艺对生活污水氨氮处理适应性研究  

Study on the Adaptability of Outfield-Enhanced Bio-Ecological Coupling Process for the Treatment of Ammonia Nitrogen in Domestic Wastewater

作　　者：彭丽萍 刘云根[1,2] 伏川东 熊烈钞 卢秀秀 马荣 PENG Liping;LIU Yungen;FU Chuandong;XIONG Liechao;LU Xiuxiu;MA Rong(College of Ecology and Environment,Southwest Forestry University;Yunnan Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous Rural Areas,Kunming 650224,China)

机构地区：[1]西南林业大学生态与环境学院 [2]云南省山地农村生态环境演变与污染治理重点实验室,云南昆明650224

出　　处：《水处理技术》2024年第4期98-104,共7页Technology of Water Treatment

基　　金：云南省科技计划面上项目(202001AU070108,202201AT070048)。

摘　　要：为提高现有人工湿地对农村生活污水的净化效率、更好地为农村生活污水处理提供适宜可行的装置技术。以西南林业大学校园生活污水为模拟对象、传统生物生态耦合系统为基础,构建不同外场强化型生物与生态耦合工艺,探索施加磁场、电磁复合场、电场等外场强化作用对氨氮去除的影响。结果表明:经72 h的处理之后,BWR的氨氮平均出水浓度为14.14 mg/L、BWR-磁为9.79 mg/L、BWR-电磁为2.73 mg/L和BWR-电为2.79 mg/L,BWR-电磁的BWR-电的出水氨氮质量浓度可满足《城镇污水处理厂污染物排放标准》(GB18918—2002)一级A标准(5.0 mg/L);相比于BWR,磁场、电磁复合场、电场强化对氨氮的去除率分别了提高约17、41.83、42.85个百分点,立体与表面负荷削减量分别可提高7.27、19、18.92 mg/cm3与0.18、0.48、0.47 mg/cm2;变形菌门和硝化螺旋菌门相对丰度增加了8.29、14.40、13.83和0.31、1.24、0.50个百分点左右;电场能耗远低于传统污水厂的的平均能耗,电场与磁场相结合,实现了1+1>2,可有效解决碳氮比低的问题,在一定程度为人工湿地技术的改进提供了新的思路。To improve the purification efficiency of existing artificial wetlands for rural domestic wastewater,and to provide suitable and feasible installation technology for rural domestic wastewater treatment.Based on the traditional bio-ecological coupling system and the simulated domestic wastewater from the campus of Southwest Forestry University,different external field-enhanced bio-ecological coupling processes were constructed to explore the effects of external field reinforcement such as applied magnetic field,electromagnetic compound field and electric field on ammonia nitrogen removal.The results showed that after 72 h treatment,the average effluent concentrations of ammonia nitrogen were 14.14 mg/L for BWR,9.79 mg/L for BWR-M,2.73 mg/L for BWR-EM and 2.79 mg/L for BWR-E,and the effluent concentrations of ammonia nitrogen for BWR-EM and BWR-E could meet the Class A standard(5)of the Discharge Standard for Pollutants from Urban Wastewater Treatment Plants(GB18918-2002).Compared with BWR,the removal rates of ammonia nitrogen by the magnetic field,electromagnetic compound field and electric field reinforcement were increased by about 17,41.83 and 42.85 percentage points respectively,and the reduction of steric and surface loads was increased by 7.27,19,18.92 mg/cm3 and 0.18,0.48,0.47 mg/cm2;the relative abundance of Proteobacteria and Nitrospira increased by about 8.29,14.40,13.83 and 0.31,1.24,0.50 percentage points;the energy consumption of electric field is much lower than the average energy consumption of traditional wastewater plants,and the combination of electric field and magnetic field realized 1+1>2,which can effectively solve the problem of low carbon and nitrogen ratio to a certain extent,provides a new improvement for artificial wetland technology.

关 键 词：垂直流人工湿地 磁场 电场 生活污水 氨氮 

分 类 号：X703.1[环境科学与工程—环境工程]