| 引用本文: | 张杰,张泽文,李冬,郭跃洲,李帅.不同污泥龄厌氧氨氧化菌的脱氮效能及其动力学特性[J].哈尔滨工业大学学报,2018,50(8):1.DOI:10.11918/j.issn.0367-6234.201707137 |
| ZHANG Jie,ZHANG Zewen,LI Dong,GUO Yuezhou,LI Shuai.Nitrogen removal efficiency and kinetic characteristics of anammox bacteria at different sludge ages[J].Journal of Harbin Institute of Technology,2018,50(8):1.DOI:10.11918/j.issn.0367-6234.201707137 |
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| 不同污泥龄厌氧氨氧化菌的脱氮效能及其动力学特性 |
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张杰1,2,张泽文1,李冬1,郭跃洲1,李帅1,2
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(1.水质科学与水环境恢复工程北京市重点实验室(北京工业大学),北京 100124;2.城市水资源与水环境国家重点实验室(哈尔滨工业大学),哈尔滨 150090)
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| 摘要: |
| 为研究不同污泥龄(SRT)条件下厌氧氨氧化菌的脱氮效能和动力学特性，采用一组SBR反应器研究梯度降低污泥龄过程中系统的NO2--N去除负荷(Nr)和NO2--N污泥负荷(Ns)，并对各阶段厌氧氨氧化过程动力学特性进行分析.结果表明，污泥龄由21 d梯度降低到12 d，Nr由0.590 kg/(m3·d)降低到0.493 kg/(m3·d)，单位MLVSS Ns由0.178 kg/(kg·d)提升到0.297 kg/(kg·d)，系统整体的脱氮性能有所下降，但单位质量的厌氧氨氧化菌脱氮效率显著提升；采用莫诺(Monod)模型可以较好地模拟不同污泥龄运行阶段厌氧氨氧化菌的动力学行为，动力学分析表明，随着污泥龄的降低，NO2--N的最大比降解速率vmax由0.406 d-1提高到0.826 d-1，半饱和常数Ks由23.3 mg/L增加到95.3 mg/L，梯度降低污泥龄能够筛选纯化生长速率较快的厌氧氨氧化菌菌种，提升NO2--N的最大比降解速率，但厌氧氨氧化菌对底物的亲和性会逐渐变差，稳定性降低.
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| 关键词: 污泥龄 厌氧氨氧化 亚硝酸盐去除负荷 亚硝酸盐污泥负荷 动力学特性 最大比降解速率 半饱和常数 |
| DOI：10.11918/j.issn.0367-6234.201707137 |
| 分类号:X703.1 |
| 文献标识码:A |
| 基金项目:北京市优秀青年拔尖团队(2014000028833TD02) |
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| Nitrogen removal efficiency and kinetic characteristics of anammox bacteria at different sludge ages |
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ZHANG Jie1,2,ZHANG Zewen1,LI Dong1,GUO Yuezhou1,LI Shuai1,2
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(1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology), Beijing 100124, China; 2. State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology), Harbin 150090, China)
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| Abstract: |
| The experiment was to explore the effect of different SRT on the nitrogen removal efficiency and kinetic characteristics of AnAOB by studying the variation of nitrite removal loads (Nr), nitrite sludge loads (Ns) and kinetic characteristics with gradient decrease of SRT in a SBR. The results showed that with SRT decreasing from 21 d to 12 d, Nr decreased from 0.590 kg/(m3·d) to 0.493 kg/(m3·d) while Ns increased from 0.178 kg/(kg·d) to 0.297 kg/(kg·d), and the N-removal performance of the whole system was reduced but the N-removal efficiency of unit mass of AnAOB was significantly improved. The Monod model can well simulate the kinetic behavior of AnAOB at different SRT. The maximum specific degradation rate (vmax) increased from 0.406 d-1 to 0.826 d-1 and the semi-saturated constant (Ks) increased from 23.3 mg/L to 95.3 mg/L, which indicated that gradiently decreasing SRT can screen and purify AnAOB with faster grow rate, while the affinity for the substrate gradually deteriorated and the stability decreased.
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| Key words: SRT Anammox Nr Ns kinetic characteristics vmax Ks |
