AnMBR-Anammox耦合污水甲烷回收及自养脱氮的工艺特性研究  

Study on characteristics of coupled AnMBR-Anammox for biogas recovery and autotrophic nitrogen removal in domestic wastewater treatment

作　　者：杨舒茗 雷振[1] 黄兴园 王俊 李倩[1] 陈荣[1] YANG Shuming;LEI Zhen;HUANG Xingyuan;WANG Jun;LI Qian;CHEN Rong(School of Environmental and Municipal Engineering,Xi′an University of Architecture and Technology,Xi′an 710055)

机构地区：[1]西安建筑科技大学环境与市政工程学院

出　　处：《环境科学学报》2019年第10期3265-3272,共8页Acta Scientiae Circumstantiae

基　　金：国家重点研发计划(No.2017YFE0127300);陕西省重点研发计划国际合作项目(No.2018KWZ-06);陕西省创新团队项目(No.2019TD-025)

摘　　要：本研究分别启动了厌氧膜生物反应器(anaerobic membrane bioreactor, AnMBR)和部分亚硝化-厌氧氨氧化反应器(Partial Nitrification/Anammox, PN/A),两者达到稳态后耦合为"AnMBR+PN/Anammox"新系统,实现前段有机质甲烷化、后段自养脱氮的污水处理目的.耦合系统运行结果表明:化学需氧量(chemical oxygen demand, COD)在AnMBR的去除率为96%,其中80.3%的COD在此段转化为CH4,Anammox内一定的反硝化作用进一步强化了COD去除,系统COD总去除率达97%以上;氮污染物经AnMBR处理后均以NH+4-N形态存在,再经PN/A处理后,总氮(total nitrogen, TN)平均去除率达78%;系统出水COD和TN值分别低于13和11 mg·L^-1.因此,AnMBR-Anammox耦合系统在同步实现污水甲烷回收、自养脱氮、低碳氮排放方面具有显著优势,本研究结果为开发AnMBR-Anammox耦合新工艺提供了理论依据.This study set-up an anaerobic membrane bioreactor(AnMBR) and a partial nitrification-anaerobic ammonia oxidation reactor(PN/Anammox), separately, and then two system were coupled to the "AnMBR+PN/Anammox" to achieve organics removal in AnMBR and post-autotrophic denitrification in PN/A. Results show that the COD removal efficiency in AnMBR was 96%, 80.3% of which was converted into CH4. The total COD removal efficiency of the coupled system exceeded 97% due to the denitrification in PN/A unit. AnMBR converted nitrogen pollutants into NH+4-N because of ammoniation. After PN/A treatment, the average TN removal efficiency was 78%. The COD and TN concentrations in effluent were lower than 13 and 11 mg·L^-1, respectively. The AnMBR-Anammox coupled system has significant advantages in simultanous wastewater methane recovery, autotrophic nitrogen removal and low carbon/nitrogen emission. The results of this study provide a theoretical basis for the development of the new AnMBR-Anammox coupling process.

关 键 词：厌氧膜生物反应器 厌氧氨氧化 耦合 甲烷回收 自养脱氮 

分 类 号：X703[环境科学与工程—环境工程]