中试SAD-ASBR系统处理含盐废水的启动与工艺特性  

Start-up and Process Characteristics of Simultaneous ANAMMOX and Denitrification(SAD) in a Pilot-scale Anaerobic Sequencing Batch Reactor(ASBR)

作　　者：于德爽 唐佳佳 张军 王晓霞 赵红 韩长民 孙捷 YU De-shuang;TANG Jia-jia;ZHANG Jun;WANG Xiao-xia;ZHAO Hong;HAN Chang-min;SUN Jie(School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China;Wuhan Kaidi Electric Power Environmental Co., Ltd., Wuhan 430023, China)

机构地区：[1]青岛大学环境科学与工程学院,青岛266071 [2]武汉凯迪电力环保有限公司,武汉430023

出　　处：《环境科学》2018年第6期2740-2747,共8页Environmental Science

基　　金：国家自然科学基金项目(51478229);山东省自然科学基金项目(ZR2017BEE002);中国博士后科学基金项目(2017M612209)

摘　　要：采用ASBR(530 L)接种A^2/O厌氧污泥,考察了厌氧氨氧化(ANAMMOX)的启动及其与反硝化耦合处理含盐废水的脱氮特性,并对菌群结构进行了分析.结果表明,温度35℃±1℃、反应时间为14 h,160 d可实现ANAMMOX的成功启动.稳定运行阶段,ANAMMOX与反硝化耦合(SAD)使得总氮(TN)去除率和去除负荷分别达91.1%和0.45 kg·(m^3·d)^(-1);污泥呈浅红色颗粒状,厌氧氨氧化菌为优势菌,且主要菌属为Candidatus Brocadia(10.6%).此外,采用按梯度逐步提高盐度的驯化方式,可实现SAD对高盐(Cl-浓度8 000 mg·L-1)模拟火电厂废水的高效脱氮除碳,COD和TN去除率分别达93.2%和90.0%.推测SAD中反硝化主要为NO_3^--N→N_2,部分反硝化(NO_3^--N→NO_2^--N)仅占30.3%.A pilot scale anaerobic sequencing batch reactor（ASBR,working volume 530 L）,inoculated by anaerobic sludge from an A2O process,was developed to investigate the start-up of anaerobic ammonia oxidation（ANAMMOX） and its combination with denitrification for deep-level nitrogen removal from saline wastewater.Simultaneously,the flora structure was analyzed.Results showed that under the conditions of temperature 35℃ ± 1℃ and reaction time 14 h,ANAMMOX was successfully started-up after 160 days of operation.During the stabilized operation stage,ANAMMOX coupled with denitrification（SAD） led to a total nitrogen（TN） removal efficiency and removal rate of 91.1% and 0.45 kg·（m3·d）（-1）,respectively.The successful cultivated sludge formed granules and presented as a light red color,with the main bacteria genus being Candidatus Brocadia（10.6%）.Additionally,high efficiency nitrogen and organic carbon removal（COD and TN removal efficiency of 93.2% and 90.0%,respectively） from wastewater simulating desulfurization and denitrification tailings with high salinity（Cl-concentration of 8000 mg·L-1） was achieved in the SAD system by gradually increasing the salinity gradient.Moreover,the denitrification in SAD was mostly NO3--N→N2,with partial denitrification（NO3--N→NO2--N） accounting for only 30.3%.

关 键 词：含盐废水 厌氧序批式反应器(ASBR) 厌氧氨氧化(ANAMMOX) 反硝化 厌氧氨氧化耦合反硝化(SAD) 

分 类 号：X703.1[环境科学与工程—环境工程]