| 引用本文: | 李冬,曹正美,张杰,高雪健,张诗睿.常温低基质启动AAOB颗粒污泥性能分析[J].哈尔滨工业大学学报,2020,52(11):10.DOI:10.11918/201906097 |
| LI Dong,CAO Zhengmei,ZHANG Jie,GAO Xuejian,ZHANG Shirui.Performance analysis of AAOB granular sludge started at room temperature and low substrate[J].Journal of Harbin Institute of Technology,2020,52(11):10.DOI:10.11918/201906097 |
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| 摘要: |
| 为研究在常温低基质（NH+4-N、NO-2-N为（40±10）mg/L）启动AAOB颗粒污泥的过程,采用SBR反应器逐渐缩短实验周期来启动AAOB颗粒污泥,并且对系统中的氮去除率、氮负荷及各个阶段厌氧氨氧化过程动力学特性进行分析.同时,对各个阶段的颗粒污泥形态、平均粒径、EPS含量以及EPS的三维荧光特性进行分析.结果表明,逐渐缩短实验周期（24 h→12 h→10 h→8 h）,氮负荷由0.074 g/(L·d)提高到0.204 g/(L·d).Grau second-orders模型较好地表征启动厌氧氨氧化(AAOB)颗粒污泥过程,基质去除速率常数k2值由0.15上升为0.22,脱氮性能逐步提高.污泥的MLSS、MLVSS由初期2 989,2 348 mg/L最后稳定到2 0,1 776 mg/L,随着反应进行,厌氧氨氧化污泥充分利用基质,颗粒污泥逐渐稳定,最终污泥颗粒平均粒径达410 μm.PN质量分数以及PN与PS比呈现先上升后趋于稳定的趋势,且PN质量分数以及PN与PS比随着粒径增大而变大.利用PARAFAC法分析污泥EPS中三维荧光成分,其由辅酶NADH、核黄素和腐殖酸组成. |
| 关键词: 厌氧氨氧化 颗粒污泥 脱氮性能 Grau second-orders模型 污泥胞外聚合物 三维荧光 |
| DOI：10.11918/201906097 |
| 分类号:X703.1 |
| 文献标识码:A |
| 基金项目:北京高校卓越青年科学家计划(BJJWZYJH01201910005019) |
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| Performance analysis of AAOB granular sludge started at room temperature and low substrate |
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LI Dong,1,CAO Zhengmei1,ZHANG Jie1,2,GAO Xuejian1,ZHANG Shirui1
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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 process of starting AAOB granular sludge under low temperature substrate (NH+4-N, NO-2-N (40±10) mg/L) was investigated. In this study, SBR reactor was used to gradually shorten the experimental cycle to start AAOB granular sludge, and the nitrogen removal rate and nitrogen load of the system were analyzed for the kinetic characteristics of anaerobic ammonium oxidation process at each stage. Meanwhile, the granular sludge morphology, average particle size, EPS content, and three-dimensional fluorescence characteristics of EPS were analyzed. Results showed that the experimental period was shortened (24 h→12 h→10 h→8 h), and the nitrogen load increased from 0.074 g/(L·d) to 0.204 g/(L·d). The Grau second-orders model better characterized the process of starting AAOB granular sludge. The matrix removal rate constant k2 increased from 0.15 to 0.22, and the denitrification performance was gradually improved. The MLSS and MLVSS of the sludge were finally stabilized from 2 989 and 2 348 mg/L to 2 460 and 1 776 mg/L. As the reaction went on, the anaerobic ammonium oxide sludge fully utilized the matrix, and the granular sludge was gradually stabilized. The average particle size of the particles reached 410 μm. The PN content and the PN/PS value first increased and then tended to be stable, and they became larger as the particle size increased. The three-dimensional fluorescence component in the sludge EPS was analyzed by the PARAFAC method, which was composed of NADH, riboflavin, and humic acid. |
| Key words: anaerobic ammonium oxidation granular sludge nitrogen removal performance Grau second-order model EPS three-dimensional fluorescence |
