| 微氧曝气-一段式厌氧氨氧化-反硝化组合工艺处理餐厨沼液 |
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| 引用本文： | 葛聪, 薛晓飞, 穆永杰, 张丽丽, 孙治荣. 微氧曝气-一段式厌氧氨氧化-反硝化组合工艺处理餐厨沼液[J]. 环境工程学报, 2023, 17(4): 1111-1117. doi: 10.12030/j.cjee.202302112 |
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| 作者姓名： | 葛聪 薛晓飞 穆永杰 张丽丽 孙治荣 |
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| 作者单位： | 1.北京工业大学环境与生命学部，北京 100124; 2.北控水务集团有限公司北控水务研究院，北京 100102 |
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| 基金项目： | 北控水务集团自主科技立项课题(ZZLX-2018-05) |
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| 摘 要： | 针对餐厨沼液高氨氮、低C/N的特点，采用“微氧曝气-一段式厌氧氨氧化-BioClens反硝化”工艺，进行了餐厨沼液脱氮除碳的小试研究。经150 d的运行优化，系统稳定后该工艺的耗氧有机物 (以COD计) 、TN平均去除率分别达到81.3%和81.8%。微氧曝气单元为厌氧氨氧化单元消除餐厨沼液中有机物的影响并保留NH4+-N，其耗氧有机物 (以COD计) 及NH4+-N去除率分别为81.6%和13.7%，为厌氧氨氧化稳定运行提供保障。厌氧氨氧化单元是NH4+-N的主要去除单元，稳定后运行后总氮去除负荷为0.480 kg·(m3·d)−1；BioClens反硝化单元对前两段工艺中产生的NO3−-N进行反硝化深度去除，在以乙酸钠为碳源，包埋固定化填料填充比为5%、C/N=3的情况下，其平均NO3−-N去除率达90%。该工艺实现了对餐厨沼液经济高效处理，具有应用潜力。
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| 关 键 词： | 餐厨沼液 微氧曝气 厌氧氨氧化 包埋固定化 反硝化 |
| 收稿时间： | 2023-02-21 |
The treatment of food waste digestate by combined process of micro-oxygen aeration,one-stage anaerobic ammoxidation and denitrification |
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| GE Cong, XUE Xiaofei, MU Yongjie, ZHANG Lili, SUN Zhirong. The treatment of food waste digestate by combined process of micro-oxygen aeration, one-stage anaerobic ammoxidation and denitrification[J]. Chinese Journal of Environmental Engineering, 2023, 17(4): 1111-1117. doi: 10.12030/j.cjee.202302112 |
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| Authors: | GE Cong XUE Xiaofei MU Yongjie ZHANG Lili SUN Zhirong |
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| Affiliation: | 1.Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China; 2.The Institute of Beijing Enterprises Water Group Limited, Beijing Enterprises Water Group Limited, Beijing 100102, China |
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| Abstract: | According to the characteristics of high ammonia nitrogen and low C/N, a pilot study on nitrogen and carbon removal of food waste digestate was carried out by using the process of "micro oxygen aeration - one-stage anaerobic ammonia oxidation-BioClens denitrification. The results showed that the average removal rates of COD and TN reached 81.3% and 81.8% after 150 d of operation optimization. The micro oxygen aeration unit eliminated the effect of organic matter and retained NH4+-N from the food waste digestate for the anaerobic ammonia oxidation unit, which removed 81.6% of COD and 13.7% of NH4+-N and provided assurance for stable operation of anaerobic ammonia oxidation. The anaerobic ammonia oxidation unit was the main NH4+-N removal unit and the average total nitrogen removal rate after stabilization was 0.480 kgN·(m3·d)−1. The BioClens denitrification unit removed the NO3−-N generated in the first two stages of the process, and its average NO3−-N removal rate reached 90% with sodium acetate as the carbon source and an encapsulated immobilized filler filling ratio of 5% and C/N=3. The process achieved an economical and efficient treatment of food waste digestate and will have broad application prospects. |
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| Keywords: | food waste digestate micro oxygen aeration anaerobic ammonia oxidation encapsulation immobilization denitrification |
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