|
|
Influences of fluid flow rate on the rapid culture of aerobic granular sludge |
WANG Lu-xi, ZHOU Nan, WANG Chen-xu, SU Hai-jia |
Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China |
|
|
Abstract The mechanism of the reactor configuration on the aerobic granular sludge formation was studied in order to culture aerobic granular sludge with high efficiency. Since the configuration of the reactor could affect the hydraulic shearing force and the fluid properties, it would play an important role in the formation of aerobic granular sludge. The anaerobic activated sludge was inoculated in the SBR (Sequencing Batch Reactor), and the mature particles in the cylinder SBR were achieved at 36d while particles in the baffle SBR were cultured successfully at 40d. Compared with the baffle SBR, the MLSS in the cylinder SBR was higher, which increased by 16.2% and reached 5023mg/L. The particles in the cylinder SBR were denser and SVI reached 45mL/g, far better than that of 63mL/gin the baffle SBR. The reason is that the cylinder SBR can provide some advantages such as higher average liquid velocity, more uniform bubble distribution, and stronger hydraulic shear force. The structural characteristics of the reactor can affect the hydraulic characteristics, so the cylinder SBR cultivation of aerobic granular sludge for a short time, and the rate of sludge granulation faster and the granular sludge are more compact.
|
Received: 28 October 2017
|
|
Corresponding Authors:
苏海佳,教授,suhj@mail.buct.edu.cn
E-mail: suhj@mail.buct.edu.cn
|
|
|
|
[1] |
Luo J H, Hao T W, Wei L R, et al. Impact of influent COD/N ratio on disintegration of aerobic granular sludge[J]. Water research, 2014,62(5):127-135.
|
[2] |
Lee D J, Chen Y Y, Show K Y, et al. Advances in aerobic granule formation and granule stability in the course of storage and reactor operation[J]. Biotechnology advances, 2010,28(6):919-934.
|
[3] |
Pijuan M, Wwmer U, Yuan Z. Reducing the startup time of aerobic granular sludge reactors through seeding floccular sludge with crushed aerobic granules[J]. Water research, 2011,45(16):5075-5083.
|
[4] |
SeviouR T, Pijuan M, Nicholson T, et al. Gel-forming exopolysaccharides explain basic differences between structures of aerobic sludge granules and floccular sludges[J]. Water research, 2009,43(18):4469-4478.
|
[5] |
Qin L, Liu Y, Tay J H. Effect of settling time on aerobic granulation in sequencing batch reactor[J]. Biochemical Engineering Journal, 2004,21(1):47-52.
|
[6] |
Wang Z P, Liu L L, Yao J, et al. Effects of extracellular polymeric substances on aerobic granulation in sequencing batch reactors[J]. Chemosphere, 2006,63(10):1728-1735.
|
[7] |
Zhang Q, Hu J, Lee D J. Aerobic granular processes:current research trends[J]. Bioresource technology, 2016,210(1):74-80.
|
[8] |
高景峰,郭建秋,陈冉妮,等.SBR反应器排水高度与直径比对污泥好氧颗粒化的影响[J]. 中国环境科学, 2008,28(6):512-516.
|
[9] |
Long B, Yang C Z, Pu W H, et al. Tolerance to organic loading rate by aerobic granular sludge in a cyclic aerobic granular reator[J]. Bioresource Technology, 2015,182:314-322.
|
[10] |
张彦灼,李文静,李军,等.固定床中好氧颗粒污泥动态吸附结晶紫染料[J]. 中国环境科学, 2015,35(6):1726-1733.
|
[11] |
牛姝,段百川,张祚黧,等.连续流态下以城市污水培养好氧颗粒污泥及颗粒特性研究[J]. 环境科学, 2013,34(3):986-992.
|
[12] |
Albertson, Orrise.1.Changes in the Biochemical Oxygen Demand Procedure in the 21st Edition of Standard Methods for the Examination of Water and Wastewater[J]. Water Environment Research:A Research Publication of the Water Environment Federation, 2007,79(4):453-456.
|
[13] |
Liu Y, Tay J H. The essential role of hydrodynamic shear force in the formation of biofilm and granular sludge. Water Res, 2002, 36(7):1653-1665.
|
[14] |
王超,郑晓英.剪切应力对好氧颗粒污泥形态结构和微生物活性的影响机制研究[J]. 环境科学, 2008,29(8):2235-2241.
|
[15] |
鲁磊,信欣,鲁航,等.连续流好氧颗粒污泥系统处理低COD/N实际生活污水的工艺优化[J]. 环境科学, 2015,36(10):3778-3785.
|
[16] |
Wang H L, Li P, Liu G S, et al. Rapid biodecolourization of eriochrome black T wastewater by bioaugmented aerobic granules cultivated through a specific method[J]. Enzyme and Microbial Technology, 2010,47(1):37-43.
|
[17] |
Khan M Z, Mondal P K, Sabir S. Aerobic granulation for wastewater bioremediation:a review[J]. The Canadian Journal of Chemical Engineering, 2013,91(6):1045-1058.
|
[18] |
Miksch K, Beata K. Distribution of extracellular polymeric substances and their role in aerobic granule formation[J]. Chemical and Process Engineering, 2012,33(4):679-688.
|
[19] |
闫立龙,刘玉,任源.胞外聚合物对好氧颗粒污泥影响的研究进展[J]. 化工进展, 2013,32(11):2744-2748.
|
[20] |
Wang D B, Zheng W, Liao D X, et al. Effect of initial pH control on biological phosphorus removal induced by the aerobic/extended-idle regime[J]. Chemosphere, 2013,90(8):2279-2287.
|
[21] |
Wang J H, He H Z, Wang M Z, et al. Bioaugmentation of activated sludge with Acinetobacter sp. TW enhances nicotine degradation in a synthetic tobacco wastewater treatment system[J]. Bioresource technology, 2013,142:445-453.
|
[22] |
Ma J X, Wang Z W, Yang Y, et al. Correlating microbial community structure and composition with aeration intensity in submerged membrane bioreactors by 454high-throughput pyrosequencing[J]. Water research, 2013,47(2):859-869.
|
|
|
|