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Rapid of cultivation dissimilatory perchlorate reducing granular sludge and characterization of the granulation process.

Author(s): Yin P, Guo J, Xiao S, Chen Z, Song Y, Ren X

Bioresour Technol. 2019 Mar;276:260-268 Authors: Yin P, Guo J, Xiao S, Chen Z, Song Y, Ren X

Article GUID: 30640020
Title:Rapid of cultivation dissimilatory perchlorate reducing granular sludge and characterization of the granulation process.
Authors:Yin P,  Guo J,  Xiao S,  Chen Z,  Song Y,  Ren X
Link:https://www.ncbi.nlm.nih.gov/pubmed/30640020?dopt=Abstract
Category:Bioresour Technol
PMID:30640020
Dept Affiliation: ENCS
1 Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China.
2 Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China. Electronic address: jianbguo@163.com.
3 Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China. Electronic address: xiaoshumin79@126.com.
4 Department of Building, Civil, and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. W., Montreal, Quebec, Canada.

Description:

Rapid of cultivation dissimilatory perchlorate reducing granular sludge and characterization of the granulation process.

Bioresour Technol. 2019 Mar;276:260-268

Authors: Yin P, Guo J, Xiao S, Chen Z, Song Y, Ren X

Abstract

To remove high-strength perchlorate, dissimilatory perchlorate reducing granular sludge (DPR-GS) was first cultivated. Three identical UASB reactors were set up under different seed sludge and up-flow velocities (RAS: active sludge (AS) and constant up-flow velocities; RDGS: denitrifying granular sludge (DGS) and constant up-flow velocities; RDGS-f: DGS and fluctuating up-flow velocities). The AS in the RAS was completely granulated by day 117, while the DGS in the RDGS and RDGS-f were both shortened the granulation time to 99?days. In addition, the fluctuating up-flow velocity can better ensure rapid cultivation of DPR-GS. Removal of ClO4- loading rate with 7.20?kg/(m3·d) occurred in all three reactors. The results of extracellular polymeric substances (EPS) composition analysis indicated the polysaccharose (PS) promoted the formation of bio-aggregates, while the protein (PN) benefited the granulation of sludge. The analyses of the microbial communities indicated that Sulfurospirillum and Acinetobacter were the dominant dissimilatory perchlorate reducing bacteria.

PMID: 30640020 [PubMed - in process]