Growth Progression of Oxygenic Photogranules and Its Impact on Bioactivity for Aeration-Free Wastewater Treatment

被引:81
作者
Abouhend, Ahmed S. [1 ]
Milferstedt, Kim [2 ]
Hamelin, Jerome [2 ]
Ansari, Abeera A. [1 ]
Butler, Caitlyn [1 ]
Carbajal-Gonzalez, Blanca, I [3 ]
Park, Chul [1 ]
机构
[1] Univ Massachusetts, Dept Civil & Environm Engn, Amherst, MA 01003 USA
[2] Univ Montpellier, INRAE, LBE, F-11100 Narbonne, France
[3] Mt Holyoke Coll, Sci Ctr Microscopy Facil, S Hadley, MA 01075 USA
基金
美国国家科学基金会;
关键词
AEROBIC GRANULATION; MICROBIAL MATS; GRANULES; CRYOCONITE; MICROSTRUCTURE; CYANOBACTERIA; STABILITY; DIFFUSION; NUTRIENTS; REMOVAL;
D O I
10.1021/acs.est.9b04745
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Oxygenic photogranules (OPGs), spherical aggregates comprised of phototrophic and nonphototrophic microorganisms, treat wastewater without aeration, which currently incurs the highest energy demand in wastewater treatment. In wastewater-treatment reactors, photogranules grow in number as well as in size. Currently, it is unknown how the photogranules grow in size and how the growth impacts their properties and performance in wastewater treatment. Here, we present that the photogranules' growth occurs with changes in phototrophic community and granular morphology. We observed that as the photogranules grow larger, filamentous cyanobacteria become enriched while other phototrophic microbes diminish significantly. The photogranules greater than 3 mm in diameter showed the development of a layered structure in which a concentric filamentous cyanobacterial layer encloses noncyanobacterial aggregates. We observed that the growth of photogranules significantly impacts their capability of producing oxygen, the key element in OPG wastewater treatment. Among seven size classes investigated in this study, photogranules in the 0.5-1 mm size group showed the highest specific oxygen production rate (SOPR), 21.9 +/- 1.3 mg O-2/g VSS-h, approximately 75% greater than the SOPR of mixed photogranular biomass. We discuss engineering the OPG process based on photogranules' size, promoting the stability of the granular process and enhancing efficiency for self-aerating wastewater treatment.
引用
收藏
页码:486 / 496
页数:11
相关论文
共 56 条
[1]   The Oxygenic Photogranule Process for Aeration-Free Wastewater Treatment [J].
Abouhend, Ahmed S. ;
McNair, Adam ;
Kuo-Dahab, Wenye C. ;
Watt, Christopher ;
Butler, Caitlyn S. ;
Milferstedt, Kim ;
Hamelin, Jerome ;
Seo, Jeongmi ;
Gikonyo, Gitau J. ;
El-Moselhy, Khalid M. ;
Park, Chul .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2018, 52 (06) :3503-3511
[2]   Stability of algal-bacterial granules in continuous-flow reactors to treat varying strength domestic wastewater [J].
Ahmad, Johan Syafri Mahathir ;
Cai, Wei ;
Zhao, Ziwen ;
Zhang, Zhenya ;
Shimizu, Kazuya ;
Lei, Zhongfang ;
Lee, Duu-Jong .
BIORESOURCE TECHNOLOGY, 2017, 244 :225-233
[3]   Effects of seeding density on photogranulation and the start-up of the oxygenic photogranule process for aeration-free wastewater treatment [J].
Ansari, Abeera A. ;
Abouhend, Ahmed S. ;
Park, Chul .
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, 2019, 40
[4]  
APHA AWWA WPCF, 1995, Standard methods for the examination of water and wastewater, P386
[5]  
Baskin T.I., 2014, Microscopy Today, V22, P36, DOI DOI 10.1017/S1551929514000522
[6]   COMPLEMENTARY CHROMATIC ADAPTATION IN A FILAMENTOUS BLUE-GREEN-ALGA [J].
BENNETT, A ;
BOGORAD, L .
JOURNAL OF CELL BIOLOGY, 1973, 58 (02) :419-435
[7]   Seeking sunlight: rapid phototactic motility of filamentous mat-forming cyanobacteria optimize photosynthesis and enhance carbon burial in Lake Huron's submerged sinkholes [J].
Biddanda, Bopaiah A. ;
McMillan, Adam C. ;
Long, Stephen A. ;
Sniderand, Michael J. ;
Weinke, Anthony D. .
FRONTIERS IN MICROBIOLOGY, 2015, 6
[8]   No more lake balls (Aegagropila linnaei Kutzing, Cladophorophyceae, Chlorophyta) in The Netherlands? [J].
Boedeker, Christian ;
Immers, Anne .
AQUATIC ECOLOGY, 2009, 43 (04) :891-902
[9]  
Brehm U., 2004, Carnets de Geologien, V3, P1
[10]   Biomicrospheres generate ooids in the laboratory [J].
Brehm, Ulrike ;
Krumbein, Wolfgang E. ;
Palinska, Katarzyna A. .
GEOMICROBIOLOGY JOURNAL, 2006, 23 (07) :545-550