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Performance enhancement of a submerged forward osmotic membrane bioreactor by aerobic granules
Wang, Yuyin1; Chen, Qiwei2; Lin, Yuxin2; Su, Kuizu2,3; Hao, Tianwei4; Liu, Li5; Sheng, Guoping6
2021-01
Source PublicationSeparation and Purification Technology
ISSN1383-5866
Volume254Pages:117608
Abstract

Forward osmotic membrane bioreactors (FOMBRs) have broad prospects for application in wastewater reuse and resource recovery. Problems such as concentration polarization, salinity accumulation, and membrane fouling have led to a rapid flux decline, which limit their practical application. In this study, we introduced aerobic granules into a FOMBR to clarify the effect of sludge morphology on reactor performance. The results showed that the average removal efficiency of total organic carbon (TOC) and phosphate-phosphorus (PO-P) were maintained above 95% during the operation of activated sludge-based FOMBR (R1) and aerobic granule-based FOMBR (R2), respectively. R2 achieved higher removal efficiency of ammonia–nitrogen (NH-N) with an average removal efficiency of 77%, which was significantly higher than R1 (57%). Over the entire operation, the content of the soluble microbial products (SMP) in R1 was generally higher than that in R2, which resulted in more polysaccharides and proteins in the fouling layer of the membrane. The membrane flux of R2 was 1.0 L·m·h higher than that of R1. The average size of flocs in R1 decreased from 137.24 μm to 76.84 μm, and that of the aerobic granules in R2 decreased from 2.35 mm to 1.20 mm and then remained stable. The results of microbial analysis showed that the membrane surface had lower microbial diversity than that of the mixed liquid, and the microorganisms enriched at the membrane surface were mainly Proteobacteria and Firmicutes with better salt tolerance.

KeywordAerobic Granule Membrane Fouling Microbial Diversity Submerged Osmotic Membrane Bioreactor Water Flux
DOI10.1016/j.seppur.2020.117608
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000580404400066
PublisherElsevier B.V.
Scopus ID2-s2.0-85089849273
Fulltext Access
FWCI0.59283715
Citation statistics
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorSu, Kuizu; Hao, Tianwei
Affiliation1.School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
2.School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
3.Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources, Hefei, 230009, China
4.Department of Civil & Environmental Engineering, University of Macau, Macao
5.School of Chemistry, Beihang University, Beijing, 100191, China
6.CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China, Hefei, 230026, China
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Wang, Yuyin,Chen, Qiwei,Lin, Yuxin,et al. Performance enhancement of a submerged forward osmotic membrane bioreactor by aerobic granules[J]. Separation and Purification Technology,2021,254:117608.
APA Wang, Yuyin,Chen, Qiwei,Lin, Yuxin,Su, Kuizu,Hao, Tianwei,Liu, Li,&Sheng, Guoping.(2021).Performance enhancement of a submerged forward osmotic membrane bioreactor by aerobic granules.Separation and Purification Technology,254,117608.
MLA Wang, Yuyin,et al."Performance enhancement of a submerged forward osmotic membrane bioreactor by aerobic granules".Separation and Purification Technology 254(2021):117608.
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