Efficiency of lagoon-based municipal wastewater treatment in removing microplastics
Municipal wastewater treatment plants act as a sink, but also are a source of microplastics in the environment. A conventional wastewater lagoon system and an activated sludge (AS)-lagoon system in Victoria (Australia) were investigated through a two-year sampling program to understand the fate and...
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| Veröffentlicht in: | The Science of the total environment 2023-06, Vol.876, p.162714-162714, Article 162714 |
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| creator | Fan, Linhua Mohseni, Arash Schmidt, Jonathan Evans, Ben Murdoch, Ben Gao, Li |
| description | Municipal wastewater treatment plants act as a sink, but also are a source of microplastics in the environment. A conventional wastewater lagoon system and an activated sludge (AS)-lagoon system in Victoria (Australia) were investigated through a two-year sampling program to understand the fate and transport of MP in such treatment processes. The abundance (>25 μm) and characteristics (size, shape, and colour) of the microplastics present in the various wastewater streams were determined. The mean values of MP in the influent of the two plants were 55.3 ± 38.4 and 42.5 ± 20.1 MP/L, respectively. The dominant MP size of influent and final effluent was 65 % of the total MP; synthetic fibres were the dominant MP in all wastewater streams. Influent MP concentration was significantly higher in summer than in other seasons for both systems, which was related to the lower plant inflow due to less stormwater entering the sewer during summer. The promising MP removal capability of the lagoon system (97 %) was attributed to its lengthy wastewater detention time (total HRT >250 days, including the storage lagoons) that would allow effective separation of MP from the water column via various physical and biological pathways. For the AS-lagoon system, the high MP reduction efficiency (98.4 %) was attributed to the post-secondary treatment of the wastewater with the lagoon system, in which MP was further removed during the month-long detention in the lagoons. The results indicated the potential of such low-energy and low-cost wastewater treatment systems for MP control.
[Display omitted]
•MP removal by wastewater lagoon and activated sludge-lagoon treatment was studied.•2-year sampling and characterisation of MP on main process streams were carried out.•MP removal of 97 % and 98.4 % was achieved by the above two systems, respectively.•HRT and activated sludge treatment played a critical role in enhanced MP removal.•Influent MP appeared to be more abundant in summer for both treatment systems. |
| doi_str_mv | 10.1016/j.scitotenv.2023.162714 |
| format | Article |
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[Display omitted]
•MP removal by wastewater lagoon and activated sludge-lagoon treatment was studied.•2-year sampling and characterisation of MP on main process streams were carried out.•MP removal of 97 % and 98.4 % was achieved by the above two systems, respectively.•HRT and activated sludge treatment played a critical role in enhanced MP removal.•Influent MP appeared to be more abundant in summer for both treatment systems.</description><identifier>ISSN: 0048-9697</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2023.162714</identifier><identifier>PMID: 36907421</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Emerging contaminants ; Environmental Monitoring ; Microplastics ; Plastics ; Removal efficiency ; Sewage ; Victoria ; Waste Disposal, Fluid ; Wastewater ; Wastewater lagoons ; Wastewater treatment ; Water Pollutants, Chemical - analysis ; Water Purification</subject><ispartof>The Science of the total environment, 2023-06, Vol.876, p.162714-162714, Article 162714</ispartof><rights>2023 The Author(s)</rights><rights>Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c420t-7549e3828594b61f866d1d13e285a776c72bbca29c553182648da1c02505bd343</citedby><cites>FETCH-LOGICAL-c420t-7549e3828594b61f866d1d13e285a776c72bbca29c553182648da1c02505bd343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.scitotenv.2023.162714$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36907421$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Fan, Linhua</creatorcontrib><creatorcontrib>Mohseni, Arash</creatorcontrib><creatorcontrib>Schmidt, Jonathan</creatorcontrib><creatorcontrib>Evans, Ben</creatorcontrib><creatorcontrib>Murdoch, Ben</creatorcontrib><creatorcontrib>Gao, Li</creatorcontrib><title>Efficiency of lagoon-based municipal wastewater treatment in removing microplastics</title><title>The Science of the total environment</title><addtitle>Sci Total Environ</addtitle><description>Municipal wastewater treatment plants act as a sink, but also are a source of microplastics in the environment. A conventional wastewater lagoon system and an activated sludge (AS)-lagoon system in Victoria (Australia) were investigated through a two-year sampling program to understand the fate and transport of MP in such treatment processes. The abundance (>25 μm) and characteristics (size, shape, and colour) of the microplastics present in the various wastewater streams were determined. The mean values of MP in the influent of the two plants were 55.3 ± 38.4 and 42.5 ± 20.1 MP/L, respectively. The dominant MP size of influent and final effluent was <500 μm, with 25–200 μm accounting for >65 % of the total MP; synthetic fibres were the dominant MP in all wastewater streams. Influent MP concentration was significantly higher in summer than in other seasons for both systems, which was related to the lower plant inflow due to less stormwater entering the sewer during summer. The promising MP removal capability of the lagoon system (97 %) was attributed to its lengthy wastewater detention time (total HRT >250 days, including the storage lagoons) that would allow effective separation of MP from the water column via various physical and biological pathways. For the AS-lagoon system, the high MP reduction efficiency (98.4 %) was attributed to the post-secondary treatment of the wastewater with the lagoon system, in which MP was further removed during the month-long detention in the lagoons. The results indicated the potential of such low-energy and low-cost wastewater treatment systems for MP control.
[Display omitted]
•MP removal by wastewater lagoon and activated sludge-lagoon treatment was studied.•2-year sampling and characterisation of MP on main process streams were carried out.•MP removal of 97 % and 98.4 % was achieved by the above two systems, respectively.•HRT and activated sludge treatment played a critical role in enhanced MP removal.•Influent MP appeared to be more abundant in summer for both treatment systems.</description><subject>Emerging contaminants</subject><subject>Environmental Monitoring</subject><subject>Microplastics</subject><subject>Plastics</subject><subject>Removal efficiency</subject><subject>Sewage</subject><subject>Victoria</subject><subject>Waste Disposal, Fluid</subject><subject>Wastewater</subject><subject>Wastewater lagoons</subject><subject>Wastewater treatment</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Purification</subject><issn>0048-9697</issn><issn>1879-1026</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkE1PxCAQhonR6PrxF7RHL10ZSoEejfErMfGgngml0w2btqzArvHfy2ZXr3IhYZ6Zd3gIuQI6BwriZjmP1iWfcNrMGWXVHASTwA_IDJRsSqBMHJIZpVyVjWjkCTmNcUnzkQqOyUklGio5gxl5u-97Zx1O9rvwfTGYhfdT2ZqIXTGup1xamaH4MjHhl0kYihTQpBGnVLipCDj6jZsWxehs8KshY87Gc3LUmyHixf4-Ix8P9-93T-XL6-Pz3e1LaTmjqZQ1b7BSTNUNbwX0SogOOqgwvxgphZWsba1hja3rChQTXHUGLGU1rduu4tUZud7NXQX_ucaY9OiixWEwE_p11EwqUQM0nGVU7tC8ZowBe70KbjThWwPVW6N6qf-M6q1RvTOaOy_3Iet2xO6v71dhBm53AOavbhyG7aDsEzsX0CbdefdvyA9SNYwb</recordid><startdate>20230610</startdate><enddate>20230610</enddate><creator>Fan, Linhua</creator><creator>Mohseni, Arash</creator><creator>Schmidt, Jonathan</creator><creator>Evans, Ben</creator><creator>Murdoch, Ben</creator><creator>Gao, Li</creator><general>Elsevier B.V</general><scope>6I.</scope><scope>AAFTH</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20230610</creationdate><title>Efficiency of lagoon-based municipal wastewater treatment in removing microplastics</title><author>Fan, Linhua ; Mohseni, Arash ; Schmidt, Jonathan ; Evans, Ben ; Murdoch, Ben ; Gao, Li</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c420t-7549e3828594b61f866d1d13e285a776c72bbca29c553182648da1c02505bd343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Emerging contaminants</topic><topic>Environmental Monitoring</topic><topic>Microplastics</topic><topic>Plastics</topic><topic>Removal efficiency</topic><topic>Sewage</topic><topic>Victoria</topic><topic>Waste Disposal, Fluid</topic><topic>Wastewater</topic><topic>Wastewater lagoons</topic><topic>Wastewater treatment</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Purification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fan, Linhua</creatorcontrib><creatorcontrib>Mohseni, Arash</creatorcontrib><creatorcontrib>Schmidt, Jonathan</creatorcontrib><creatorcontrib>Evans, Ben</creatorcontrib><creatorcontrib>Murdoch, Ben</creatorcontrib><creatorcontrib>Gao, Li</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The Science of the total environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fan, Linhua</au><au>Mohseni, Arash</au><au>Schmidt, Jonathan</au><au>Evans, Ben</au><au>Murdoch, Ben</au><au>Gao, Li</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Efficiency of lagoon-based municipal wastewater treatment in removing microplastics</atitle><jtitle>The Science of the total environment</jtitle><addtitle>Sci Total Environ</addtitle><date>2023-06-10</date><risdate>2023</risdate><volume>876</volume><spage>162714</spage><epage>162714</epage><pages>162714-162714</pages><artnum>162714</artnum><issn>0048-9697</issn><eissn>1879-1026</eissn><abstract>Municipal wastewater treatment plants act as a sink, but also are a source of microplastics in the environment. A conventional wastewater lagoon system and an activated sludge (AS)-lagoon system in Victoria (Australia) were investigated through a two-year sampling program to understand the fate and transport of MP in such treatment processes. The abundance (>25 μm) and characteristics (size, shape, and colour) of the microplastics present in the various wastewater streams were determined. The mean values of MP in the influent of the two plants were 55.3 ± 38.4 and 42.5 ± 20.1 MP/L, respectively. The dominant MP size of influent and final effluent was <500 μm, with 25–200 μm accounting for >65 % of the total MP; synthetic fibres were the dominant MP in all wastewater streams. Influent MP concentration was significantly higher in summer than in other seasons for both systems, which was related to the lower plant inflow due to less stormwater entering the sewer during summer. The promising MP removal capability of the lagoon system (97 %) was attributed to its lengthy wastewater detention time (total HRT >250 days, including the storage lagoons) that would allow effective separation of MP from the water column via various physical and biological pathways. For the AS-lagoon system, the high MP reduction efficiency (98.4 %) was attributed to the post-secondary treatment of the wastewater with the lagoon system, in which MP was further removed during the month-long detention in the lagoons. The results indicated the potential of such low-energy and low-cost wastewater treatment systems for MP control.
[Display omitted]
•MP removal by wastewater lagoon and activated sludge-lagoon treatment was studied.•2-year sampling and characterisation of MP on main process streams were carried out.•MP removal of 97 % and 98.4 % was achieved by the above two systems, respectively.•HRT and activated sludge treatment played a critical role in enhanced MP removal.•Influent MP appeared to be more abundant in summer for both treatment systems.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>36907421</pmid><doi>10.1016/j.scitotenv.2023.162714</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Emerging contaminants Environmental Monitoring Microplastics Plastics Removal efficiency Sewage Victoria Waste Disposal, Fluid Wastewater Wastewater lagoons Wastewater treatment Water Pollutants, Chemical - analysis Water Purification |
| title | Efficiency of lagoon-based municipal wastewater treatment in removing microplastics |
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