Enhancement of aerobic granulation and nutrient removal by an algal-bacterial consortium in a lab-scale photobioreactor

被引:180
作者
Zhang, Bing [1 ]
Lens, Piet N. L. [2 ]
Shi, Wenxin [1 ]
Zhang, Ruijun [1 ]
Zhang, Zhiqiang [1 ]
Guo, Yuan [1 ]
Bao, Xian [1 ]
Cui, Fuyi [1 ]
机构
[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China
[2] UNESCO, IHE, POB 3015, NL-2601 DA Delft, Netherlands
基金
中国国家自然科学基金;
关键词
Aerobic granulation; Algae; Extracellular polymeric substances (EPS); Photobioreactor; Wastewater treatment; SEQUENCING BATCH REACTOR; EXTRACELLULAR POLYMERIC SUBSTANCES; DOMESTIC WASTE-WATER; SEWAGE-TREATMENT; SYMBIOSIS SYSTEM; ACTIVATED-SLUDGE; MICROALGAE; GROWTH; BIOFUEL; NITRIFICATION;
D O I
10.1016/j.cej.2017.11.151
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study aimed to evaluate the properties, nutrients removal and microbial community dynamics of algal-bacterial granules in a lab-scale photobioreactor treating synthetic domestic wastewater. Two identical bioreactors were operated under non-phototrophic (Rc, the control) and phototrophic (Rp) conditions (12 h/12 h dark-light cycles). The results showed that aggregation of algal and bacterial biomass occurred rapidly in Rp, possibly as a granule nucleus, which favored aerobic granulation. Mature algal-bacterial granules had a compact structure and large size as well as exhibited excellent settling properties. In addition, increased biomass production was facilitated in Rp compared to Rc. Notably, increased production of extracellular polymeric substances (EPS) was induced in Rp, especially aromatic and tryptophan-like substances, implying that proteins significantly contributed to the formation and stability of the algal-bacterial granules. Further investigations revealed that algal-bacterial granules provided resistance to temperature fluctuations and enhanced the removal efficiencies of organics and nutrients (nitrogen and phosphorus), probably attributable to the enrichment of the Betaproteobacteria, Gammaproteobacteria and Flavobacterium bacterial classes, and Chlorophyta, Trebouxiophyceae and Bacillariophyceae algae classes, whereas Cyanobacteria only occupied a small proportion. These findings demonstrated that the algal-bacterial consortium was conducive to accelerating aerobic granulation, enhancing system stability and improving nutrient removal efficiency.
引用
收藏
页码:2373 / 2382
页数:10
相关论文
共 49 条
[1]   Aerobic granular sludge: Recent advances [J].
Adav, Sunil S. ;
Lee, Duu-Jong ;
Show, Kuan-Yeow ;
Tay, Joo-Hwa .
BIOTECHNOLOGY ADVANCES, 2008, 26 (05) :411-423
[2]  
[Anonymous], 2005, Standard methods for the examination of water and waste- water
[3]   Microbial dynamics and properties of aerobic granules developed in a laboratory-scale sequencing batch reactor with an intermediate filamentous bulking stage [J].
Aqeel, H. ;
Basuvaraj, M. ;
Hall, M. ;
Neufeld, J. D. ;
Liss, S. N. .
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 2016, 100 (01) :447-460
[4]  
BRADFORD MM, 1976, ANAL BIOCHEM, V72, P248, DOI 10.1016/0003-2697(76)90527-3
[5]   Enhancing microalgal biomass productivity by engineering a microalgal-bacterial community [J].
Cho, Dae-Hyun ;
Ramanan, Rishiram ;
Heo, Jina ;
Lee, Jimin ;
Kim, Byung-Hyuk ;
Oh, Hee-Mock ;
Kim, Hee-Sik .
BIORESOURCE TECHNOLOGY, 2015, 175 :578-585
[6]   A proposed aerobic granules size development scheme for aerobic granulation process [J].
Dahalan, Farrah Aini ;
Abdullah, Norhayati ;
Yuzir, Ali ;
Olsson, Gustaf ;
Salmiati ;
Hamdzah, Myzairah ;
Din, Mohd Fadhil Mohd ;
Ahmad, Siti Aqlima ;
Khalil, Khalilah Abdul ;
Anuar, Aznah Nor ;
Noor, Zainura Zainon ;
Ujang, Zaini .
BIORESOURCE TECHNOLOGY, 2015, 181 :291-296
[7]   Impacts of applied voltage on microbial electrolysis cell-anaerobic membrane bioreactor (MEC-AnMBR) and its membrane fouling mitigation mechanism [J].
Ding, Aqiang ;
Fan, Qin ;
Cheng, Ran ;
Sun, Guodong ;
Zhang, Mingjie ;
Wu, Donglei .
CHEMICAL ENGINEERING JOURNAL, 2018, 333 :630-635
[8]   Evolution and functional analysis of extracellular polymeric substances during the granulation of aerobic sludge used to treat p-chloroaniline wastewater [J].
Dong, Jingjing ;
Zhang, Zhiming ;
Yu, Zhuodong ;
Dai, Xin ;
Xu, Xiangyang ;
Alvarez, Pedro J. J. ;
Zhu, Liang .
CHEMICAL ENGINEERING JOURNAL, 2017, 330 :596-604
[9]   Redfield revisited:: variability of C:N:P in marine microalgae and its biochemical basis [J].
Geider, RJ ;
La Roche, J .
EUROPEAN JOURNAL OF PHYCOLOGY, 2002, 37 (01) :1-17
[10]   Advancements in the application of aerobic granular biomass technology for sustainable treatment of wastewater [J].
Giesen, A. ;
de Bruin, L. M. M. ;
Niermans, R. P. ;
van der Roest, H. F. .
WATER PRACTICE AND TECHNOLOGY, 2013, 8 (01) :47-54