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A comparison of adsorption of organic micropollutants onto activated carbon following chemically enhanced primary treatment with microsieving, direct membrane filtration and tertiary treatment of municipal wastewater

The Science of the total environment, 2022-03, Vol.811 (152225), p.152225 [Peer Reviewed Journal]

Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved. ;ISSN: 0048-9697 ;ISSN: 1879-1026 ;EISSN: 1879-1026 ;DOI: 10.1016/j.scitotenv.2021.152225 ;PMID: 34921873

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Title:
A comparison of adsorption of organic micropollutants onto activated carbon following chemically enhanced primary treatment with microsieving, direct membrane filtration and tertiary treatment of municipal wastewater
Author: Gidstedt, Simon ; Betsholtz, Alexander ; Falås, Per ; Cimbritz, Michael ; Davidsson, Åsa ; Micolucci, Federico ; Svahn, Ola
Subjects: ACTIVATED CARBON ; Activated carbon adsorption ; Adsorption ; Charcoal ; Chemical Engineering ; Chemical Process Engineering ; Direct membrane filtration ; dissolved organic carbon (DOC) ; Dissolved Organic Matter ; DOC ; Earth and Related Environmental Sciences ; Engineering and Technology ; Environmental Biotechnology ; Environmental Sciences ; Geovetenskap och miljövetenskap ; Kemiska processer ; Kemiteknik ; Micropollutants ; Miljöbioteknik ; Miljövetenskap ; Natural sciences ; Naturvetenskap ; Teknik ; Vattenbehandling ; Waste Disposal, Fluid ; Waste Water ; Water Pollutants, Chemical - analysis ; Water Purification ; Water Treatment
Is Part Of: The Science of the total environment, 2022-03, Vol.811 (152225), p.152225
Description: The adsorption of organic micropollutants onto powdered activated carbon (PAC) was investigated in laboratory scale based on samples from four wastewater process streams (matrices); three from a pilot-scale plant with different degrees of physicochemical treatment of municipal wastewater and one from a full-scale activated sludge plant with post-precipitation. The pilot-scale treatment consisted of chemically enhanced primary treatment with microsieving followed by direct membrane filtration as microfiltration or ultrafiltration. The results showed highest adsorption of micropollutants in the tertiary (biologically and chemically) treated wastewater and lowest adsorption in the microsieve filtrate. Adsorption of micropollutants in the direct membrane microfiltration (200 nm) permeate was generally similar to that in the direct membrane ultrafiltration (3 nm) permeate. The higher adsorption of micropollutants in the tertiary treated wastewater could be related to a lower concentration of dissolved organic carbon (DOC) and lower affinity of DOC for PAC at low dosage (<15 mg PAC/L) in this matrix. At a PAC dose of 10 mg/L, sulfamethoxazole was removed by 33% in the tertiary treated wastewater and 7% in the direct membrane microfiltration permeate. In addition to the PAC experiments, a pilot scale sand filter and a proceeding GAC filter was operated on tertiary treated wastewater from the full-scale treatment plant. Similar removal trends in the PAC and GAC experiments were observed when studying a weighted average micropollutant removal in the GAC filter and a similar dose of activated carbon for both PAC and GAC. Positively charged micropollutants were removed to a higher extent than negatively charged ones by both PAC and GAC.
Publisher: Netherlands
Language: English
Identifier: ISSN: 0048-9697
ISSN: 1879-1026
EISSN: 1879-1026
DOI: 10.1016/j.scitotenv.2021.152225
PMID: 34921873
Source: SWEPUB Freely available online

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A comparison of adsorption of organic micropollutants onto activated carbon following chemically enhanced primary treatment with microsieving, direct membrane filtration and tertiary treatment of municipal wastewater

Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved. ;ISSN: 0048-9697 ;ISSN: 1879-1026 ;EISSN: 1879-1026 ;DOI: 10.1016/j.scitotenv.2021.152225 ;PMID: 34921873

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