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中试SAD-ASBR系统处理含盐废水的启动与工艺特性
摘要点击 216  全文点击 58  投稿时间:2017-10-16  修订日期:2017-11-30
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中文关键词  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)
英文关键词  saline wastewater  anaerobic sequencing batch reactor (ASBR)  anaerobic ammonia oxidation (ANAMMOX)  denitrification  simultaneous ANAMMOX and denitrification (SAD)
作者单位E-mail
于德爽 青岛大学环境科学与工程学院, 青岛 266071 qdydsh@163.com 
唐佳佳 青岛大学环境科学与工程学院, 青岛 266071  
张军 青岛大学环境科学与工程学院, 青岛 266071  
王晓霞 青岛大学环境科学与工程学院, 青岛 266071 elainewangxx@163.com 
赵红 武汉凯迪电力环保有限公司, 武汉 430023  
韩长民 武汉凯迪电力环保有限公司, 武汉 430023  
孙捷 武汉凯迪电力环保有限公司, 武汉 430023  
中文摘要
      采用ASBR(530 L)接种A2/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·(m3·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8000 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NO3--N→N2,部分反硝化(NO3--N→NO2--N)仅占30.3%.
英文摘要
      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%.

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