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温度冲击对厌氧氨氧化工艺的影响

时间:2020-06-21 21:22来源:毕业论文
相对于低温冲击而言,高温冲击抑制反应器性能时间长,恢复时间长。反应器经受长期冲击驯化后,当进行高温和负荷复合冲击时,反应器能自如应对,此时复合冲击较之单一高温冲击

摘要厌氧氨氧化工艺是一种高效、经济、节能的新型生物脱氮技术,具有重要的应用前景,但厌氧氨氧化菌(AnAOB)对温度极其敏感,影响其实际应用。本文试验了高温和低温温度冲击、温度和负荷复合冲击对中温(35℃)升流式厌氧污泥床(UASB)反应器性能的影响,探究AnAOB的活性对温度冲击的响应情况,寻找UASB反应器性能在不同工况条件下的变化规律。实验结果得出:相对于低温冲击而言,高温冲击抑制反应器性能时间长,恢复时间长。反应器经受长期冲击驯化后,当进行高温和负荷复合冲击时,反应器能自如应对,此时复合冲击较之单一高温冲击的影响小。此外,反应器受冲击影响后,冲击时的颗粒污泥活性明显下降,EPS含量增多,血红素含量略微下降。本实验希望能够为厌氧氨氧化工艺的工业化应用提供有用的参考依据。51474

Abstract The anaerobic ammonium oxidation (anammox) process is a biological nitrogen removal process with advantages of high-efficiency, cost-efficiency and environment friendly, and has an important application prospect. But the anammox bacterium is very sensitive to temperature and this defect influence its practical application. This test aimed to investigate the shock of high-temperature, low-temperature and nitrogen load increasement influence to moderate(35℃) UASB, learn the response of AnAOB activity to the shock of temperature, and find the change law of UASB reactor performance in different working conditions. The experimental results are: comparised with the low-temperature shock, the high-temperature shock gave rise to a longer recovery time of reactor performance. After the long-time shock, the reactor performance was not bad when it was suffered with composite shock, and it was showed that the effect of composite shock was lower than one-factor shock. Moreover, extracellular polymeric substance (EPS) increased, and Heme c content was decreased during impact phase.

毕业论文关键词:厌氧氨氧化工艺;厌氧氨氧化菌;温度冲击;复合冲击;反应器性能 

Keyword: anammox process; anammox bacterium; temperature shock; composite shock; reactor performance 

目    录

目录

引言 3

1 材料与方法 3

1.1 实验材料 3

1.1.1模拟废水 3

1.1.2试验装置 4

1.1.3 接种污泥 4

1.2 试验方法 4

2 结果 4

2.1 高温冲击对厌氧氨氧化工艺的影响 4

2.2 低温冲击对厌氧氨氧化工艺的影响 6

2.3 高低温复合冲击对厌氧氨氧化工艺的影响 9

2.4 温度和负荷复合冲击对厌氧氨氧化工艺的影响 9

2.4.1温度浓度复合冲击 10

2.4.2温度水力负荷复合冲击 11

2.4.3温度、浓度、水力负荷复合冲击 13

2.5温度冲击对厌氧氨氧化工艺中颗粒特性的影响 14

3 分析与讨论 16

3.1 研究意义 16

3.2微生物与生态因子的相互作用 16

3.3敏感度指数和EPS 16

4 小结 温度冲击对厌氧氨氧化工艺的影响:http://www.lwfree.com/huaxue/lunwen_55105.html

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