Start-up of CANON reactor with modified polyethylene carrier and its performance

doi:10.3969/j.issn.0438-1157.2014.11.027

CIESC Journal ›› 2014, Vol. 65 ›› Issue (11): 4406-4412.DOI: 10.3969/j.issn.0438-1157.2014.11.027

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Start-up of CANON reactor with modified polyethylene carrier and its performance

FU Kunming^1,2, ZHANG Jie², CAO Xiangsheng², LI Dong², ZUO Zaorong¹, WANG Huifang¹

1. Key Laboratory of Urban Storm Water System and Water Environment, Ministry of Education, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, School of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China

Received:2014-04-28 Revised:2014-07-22 Online:2014-11-05 Published:2014-11-05
Supported by:
supported by the National Natural Science Foundation of China (51308025), Beijing Higher Education Young Elite Teacher Project (YETP1649).

改性聚乙烯填料CANON反应器的启动与运行

付昆明^1,2, 张杰², 曹相生², 李冬², 左早荣¹, 王会芳¹

1. 北京建筑大学环境与能源工程学院, 城市雨水系统与水环境省部共建教育部重点实验室, 北京 100044;
2. 北京工业大学水质科学与水环境恢复工程北京市重点实验室, 北京 100124

通讯作者: 付昆明
基金资助:
国家自然科学基金项目(51308025);北京高等学校青年英才计划项目(YETP1649).

Abstract

Abstract: A CANON reactor with modified polyethylene carrier was started up by seeding sludge from another mature CANON reactor and using artificial inorganic ammonia-rich waste water as influent. To accelerate ANAMMOX bacteria cultivation, the start-up was under anaerobic conditions first to avoid dissolved oxygen inhibition on ANAMMOX bacteria, and then under aerobic conditions. The reactor was first under anaerobic conditions to start ANAMMOX process at room temperature [(20±5)℃] in first 300 days, however, total nitrogen removal load was only 0.12 kg·(m³·d)^-1, which meant failure of ANAMMOX. When temperature was increased to 30℃, 30 days later, total nitrogen removal load was up to 0.23 kg·(m³·d)^-1. Then anaerobic conditions was changed to aerobic conditions, and total nitrogen removal load was up to 1.01 kg·(m³·d)^-1, while nitrogen removal efficiency was 77.61%, and average variation ratio of nitrate and nitrogen (δNO₃^--N/δTN) was 0.122, close to theoretical value 0.127, showing both good stability of nitritation and good nitrogen removal. Adopting the way of anaerobic stage first and then aerobic stage could not accelerate ANAMMOX bacteria cultivation as expected, and modified polyethylene carrier was not a suitable carrier to start ANAMMOX process under anaerobic conditions. However, once the reactor was successfully started up, aeration could be saved, though it might perform unstably. Modified polyethylene carrier was suggested to combine with UASB reactor to keep bacteria.

Key words: CANON process, modified polyethylene, ANAMMOX, nitritation, ammonia

摘要： 以人工配制无机高氨氮废水为进水,通过接种CANON污泥,研究了改性聚乙烯填料CANON反应器的启动过程.为避免初期溶解氧的抑制作用, 启动采用先厌氧后好氧的方式,以加速ANAMMOX细菌的增殖.首先,在室温[(20±5)℃]、厌氧条件下,历经300 d依然不能启动厌氧氨氧化,TN去除负荷仅为0.12 kg·(m³·d)^-1;当提高温度至30℃后,30 d后,TN的去除负荷达到0.23 kg·(m³·d)^-1;改为好氧条件后,经过38 d后,TN的去除负荷达到1.01 kg·(m³·d)^-1,TN去除率达到77.61%, 的平均值为0.122,接近理论值0.127,表明CANON反应器的脱氮效果良好,短程硝化稳定.通过分析认为,采用先厌氧后好氧的方式启动,并没有达到加速培养ANAMMOX细菌的预期目的,改性聚乙烯填料不适用在厌氧条件下培养ANAMMOX细菌.改性聚乙烯填料CANON反应器启动成功后,需要的曝气量少,但运行不易稳定,应对于CANON反应器形式予以改进,建议将改性聚乙烯填料结合UASB反应器采用,使污泥免于流失.

关键词: CANON工艺, 改性聚乙烯, 厌氧氨氧化, 短程硝化, 氨氮

CLC Number:

X703

FU Kunming, ZHANG Jie, CAO Xiangsheng, LI Dong, ZUO Zaorong, WANG Huifang. Start-up of CANON reactor with modified polyethylene carrier and its performance[J]. CIESC Journal, 2014, 65(11): 4406-4412.

付昆明, 张杰, 曹相生, 李冬, 左早荣, 王会芳. 改性聚乙烯填料CANON反应器的启动与运行[J]. 化工学报, 2014, 65(11): 4406-4412.

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Start-up of CANON reactor with modified polyethylene carrier and its performance

改性聚乙烯填料CANON反应器的启动与运行

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