Effects of polyurethane foam carrier addition on anoxic/aerobic membrane bioreactor (A/O-MBR) for coal gasification wastewater (CGW) treatment: Performance and microbial community structure.

Chen, Z ; Li, D ; et al.

In: The Science of the total environment, Jg. 789 (2021-10-01), S. 148037

academicJournal

Coal gasification wastewater (CGW) is a typical toxic and refractory industrial wastewater with abundant phenols contained. Two identical anoxic/aerobic membrane bioreactors (with (R2) and without (R1) polyurethane (PU) foam) were carried out in parallel to investigate the role of PU foam addition in enhancing pollutants removal in CGW. Results showed that both systems exhibited effective removal of chemical oxygen demand (>93%) and total phenols (>97%) but poor ammonia nitrogen removal (<35%) constrained by ammonia oxidation process. GC-MS analysis revealed that aromatic and other refractory intermediates were dramatically reduced in R2. Moreover, the PU addition had negligible influence on the total soluble microbial products and extracellular polymeric substances contents but significantly alleviated membrane fouling with the operating time 33% prolonged. Microbial community revealed that Flavobacterium, Holophaga, and Geobacter were enriched on PU. Influent type might be a main driver for microbial community succession.

Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Titel:	Effects of polyurethane foam carrier addition on anoxic/aerobic membrane bioreactor (A/O-MBR) for coal gasification wastewater (CGW) treatment: Performance and microbial community structure.
Autor/in / Beteiligte Person:	Chen, Z ; Li, D ; Liu, H ; Wen, Q
Zeitschrift:	The Science of the total environment, Jg. 789 (2021-10-01), S. 148037
Veröffentlichung:	Amsterdam, Elsevier., 2021
Medientyp:	academicJournal
ISSN:	1879-1026 (electronic)
DOI:	10.1016/j.scitotenv.2021.148037
Schlagwort:	Bioreactors Coal Polyurethanes Waste Disposal, Fluid Microbiota Wastewater
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Publication Type: Journal Article Language: English [Sci Total Environ] 2021 Oct 01; Vol. 789, pp. 148037. <i>Date of Electronic Publication: </i>2021 May 26. MeSH Terms: Microbiota* ; Wastewater* ; Bioreactors ; Coal ; Polyurethanes ; Waste Disposal, Fluid Contributed Indexing: Keywords: A/O-MBR; Coal gasification wastewater; Membrane fouling; Microbial community structure; Polyurethane foam Substance Nomenclature: 0 (Coal) ; 0 (Polyurethanes) ; 0 (Waste Water) ; 9009-54-5 (polyurethane foam) Entry Date(s): Date Created: 20210603 Date Completed: 20210722 Latest Revision: 20221207 Update Code: 20240513

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