| 厌氧氨氧化污泥恢复过程中的颗粒特性 |
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| 引用本文： | 陈方敏,顾澄伟,胡羽婷,黄勇,李祥,陆明羽,方文烨,金润.厌氧氨氧化污泥恢复过程中的颗粒特性[J].环境科学,2018,39(12):5605-5611. |
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| 作者姓名： | 陈方敏 顾澄伟 胡羽婷 黄勇 李祥 陆明羽 方文烨 金润 |
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| 作者单位： | 苏州科技大学环境科学与工程学院;苏州科技大学环境生物技术研究所;中国人民大学环境学院;清...;北京建筑大学环境与能源工...;青岛大学环境科学与工程学...;合肥工业大学资源与环境工...;苏州科技大学环境科学与工...;中国人民大学环境学院;生...;广东工业大学环境科学与工...;青岛大学环境科学与工程学...;无锡市政设计研究院有限公...;湖南百利工程科技股份有限... |
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| 摘 要： | 目前运行容易失稳已成为制约厌氧氨氧化(ANAMMOX)工艺应用的因素之一.在保证底物不抑制的条件下,通过对实验室前期运行失稳的连续流全混反应器(CSTR)中的厌氧氨氧化污泥进行活性恢复,研究了滞留的基质浓度对ANAMMOX污泥恢复过程中颗粒化及活性的影响.结果表明,经过126d运行,ANAMMOX污泥活性获得恢复且脱氮能力明显提升.控制高、低基质浓度水平的2个反应器均能实现污泥的颗粒化及氮素的高效去除,NRR最大分别达到16. 97 kg·(m~3·d)~(-1)和14. 43 kg·(m~3·d)~(-1).随着反应器脱氮能力的提高(污泥颗粒粒径增大),R1、R2两个反应器内污泥的胞外聚合物EPS含量(以VSS计)均增大,分别由接种时的34. 45 mg·g~(-1)增大至77. 52 mg·g~(-1)和94. 18 mg·g~(-1),PN/PS由1. 89分别增大到6. 25和6. 84.在一定范围内,PN/PS比值增大有利于ANAMMOX污泥颗粒化,但PN/PS过大会导致颗粒污泥结构失稳上浮,加剧污泥流失现象.
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| 关 键 词： | 厌氧氨氧化(ANAMMOX) 活性恢复 颗粒化 基质浓度 胞外聚合物(EPS) |
| 收稿时间： | 2018/5/26 0:00:00 |
| 修稿时间： | 2018/6/7 0:00:00 |
Granular Characteristics of Anaerobic Ammonia Oxidation Sludge During the Recovery Process |
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| CHEN Fang-min,GU Cheng-wei,HU Yu-ting,HUANG Yong,LI Xiang,LU Ming-yu,FANG Wen-ye and JIN Run.Granular Characteristics of Anaerobic Ammonia Oxidation Sludge During the Recovery Process[J].Chinese Journal of Environmental Science,2018,39(12):5605-5611. |
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| Authors: | CHEN Fang-min GU Cheng-wei HU Yu-ting HUANG Yong LI Xiang LU Ming-yu FANG Wen-ye and JIN Run |
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| Institution: | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China,School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China and School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China |
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| Abstract: | Operation instability has become one of the factors restricting the application of the anaerobic ammonia oxidation (ANAMMOX) process. Under the condition that the substrate is not suppressed, the effects of the substrate concentration on the granulation and activity of ANAMMOX granular sludge in the recovery process were studied by restoring the activity of ANAMMOX sludge, which was derived from early-stage operation instability of the continuous stirred tank reactor (CSTR). The results show that the activity of ANAMMOX sludge was recovered and the denitrification capacity increased significantly after 126 days of operation. When the NH4+-N and NO2--N concentrations were 450 mg·L-1 and 560 mg·L-1, respectively, the nitrogen removal was achieved in both the high-and low-substrate concentration reactors and the maximum NRR was 16.97 kg·(m3·d)-1 and 14.43 kg·(m3·d)-1, respectively. With the improvement of the nitrogen removal capacity of the reactor (the granular diameter of the sludge is increased), the extracellular polymeric substance (EPS) content increased in both reactors from 34.45 to 77.52 and to 94.18 mg·g-1, respectively, and the PN/PS increased from 1.89 to 6.25 and 6.84, respectively. To a certain extent, the increase of PN/PS is conducive to the granulation of ANAMMOX sludge, but a too large PN/PS would lead to the instability of granular sludge and sludge loss. |
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| Keywords: | anaerobic ammonium oxidation(ANAMMOX) recovery granulation substrate concentration extracellular polymeric substances(EPS) |
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