2.北控水务集团有限公司,北京 100102
1.College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
2.Beijing Enterprises Water Group Limited, Beijing 100102, China
在(30±2) °C的条件下,通过精确控制供氧量,以氧气为气源培养E1反应器,以空气为气源培养E2反应器,探究了不同气源对一段式短程硝化-厌氧氨氧化工艺启动、负荷提升及稳定运行效果的影响。结果表明:以氧气为气源的E1反应系统一段式短程硝化-厌氧氨氧化效果更佳,E1反应器中的
。通过不同气源对一段式短程硝化-厌氧氨氧化工艺启动与运行的作用效应对比,证明了以氧气为气源应用于一段式短程硝化-厌氧氨氧化工艺的可行性与优势。以上研究结果可为其在厌氧氨氧化工程的应用提供参考。
Through precise control the oxygen supply amount at (30±2) °C, the E1 reactor with oxygen as the gas source and E2 reactor with air as the gas source were cultivated. These two sets of one-stage partial nitrification-anammox EGSB reactors were compared to explore the effects of different gas sources on the start-up, load increase and stable running of the one-stage partial nitrification-anammox process. The results showed that one-stage partial nitrification-anammox in E1 reaction system with oxygen as gas source performed better, the removal rates of
-N and TN in E1 reactor were over 95% and 85%, respectively. The time to achieve the load increase was about 10 days; After one-stage shortcut nitrification anammox, ΔTN/Δ
-N were stable at 0.88 and 0.11 in E1 reaction system, respectively; the AOB activity in E1 and E2 reactors increased from 0.3 mg·(g·h)
, respectively. Through comparison of the effects of different gas sources on the start-up and running of one-stage partial nitrification-anaerobic process, the feasibility and advantages of the oxygen as gas source in one-stage partial nitrification-anaerobic system were proved. This result can provide references for its application in anaerobic ammonia oxidation.
.
EGSB experimental device
Performance of E1 reactor during the start-up process
Performance of E2 reactor during the start-up process
Ammonia nitrogen removal at each stage in the E1 and E2 reactors
Performance of E1 reactor during the stable running process
Performance of E2 reactor during the stable running process
Changes of stoichiometric ratio in E1 reactor
Changes of stoichiometric ratio in E2 reactor
Activities of functional bacteria at each stage
Activities of AnAOB at each stage
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