| 中试SAD-ASBR系统处理含盐废水的启动与工艺特性 |
| 摘要点击 2073 全文点击 727 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) |
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| 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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