Effect of saltwater intrusion on activated sludge flocculation
Saltwater addition negatively impacted the settling properties of the activated sludge in a sequencing batch reactor, which in turn caused the effluent quality and the dewatering properties to deteriorate. Experiments showed that increasing sodium ion concentrations above 1 meq/L interfered with bio...
Gespeichert in:
| Veröffentlicht in: | Water environment research 2021-05, Vol.93 (5), p.750-761 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 761 |
|---|---|
| container_issue | 5 |
| container_start_page | 750 |
| container_title | Water environment research |
| container_volume | 93 |
| creator | Berde, Manisha Jolis, Domènec |
| description | Saltwater addition negatively impacted the settling properties of the activated sludge in a sequencing batch reactor, which in turn caused the effluent quality and the dewatering properties to deteriorate. Experiments showed that increasing sodium ion concentrations above 1 meq/L interfered with bio‐flocculation by ion exchange of calcium ions displaced by sodium in mixed liquor flocs, causing increases in the sludge volume index, total suspended solids, and chemical oxygen demand concentrations of the final effluent and in the times of the time to filter test of the mixed liquor. Experiments were also conducted to reverse mixed liquor de‐flocculation by adding calcium ions in wastewater with different sodium chloride concentrations and a positive relationship was found between calcium ion added and improved effluent quality. Calcium ion concentrations above 1.6 meq/L proved to be beneficial for adhesion of microbial aggregates leading to the formation of stable flocs and improved sludge dewatering by reversing the ion exchange phenomenon observed with sodium concentrations above 1 meq/L. Monovalent‐to‐divalent ratios did not provide predictive information on de‐flocculation. Hence, individual ion concentrations in addition to monovalent‐to‐divalent cation ratios are important in the onset of de‐flocculation effects while a system‐specific concentration threshold was measured under which no adverse effects were observed.
Practitioner points
The adverse effects of varying concentrations of sodium chloride on the biological process affecting bioflocculation and effluent quality.
Impact of sodium on the health of the mixed liquor as well as on dewatering processes.
Prediction of sea level rise due to climate change will impact utilities situated along the coast with saltwater intrusion problems.
Management of dewatered flows containing saltwater from onsite construction
Identify management practices to reduce the impact of saltwater on the wastewater treatment plant.
Addition of divalent Cation (CaCl2) to improve de‐flocculation of biological sludge, effluent quality and dewatering properties caused by saltwater intrusion. |
| doi_str_mv | 10.1002/wer.1455 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_pubmed_primary_32929774</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2523056196</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3495-84a561564049ae0e8efd2d5d71bc2945ac681c0cc499332ba4e55c3fec5e8ebc3</originalsourceid><addsrcrecordid>eNp1kE1LAzEQhoMotlbBXyALXrys5mt2m4sgpX5AQRDFY8jOJrJl261J1tJ_b2qrN2FghuHhmeEl5JzRa0Ypv1lbf80kwAEZMgCZlyDYYZppwXIpqBiQkxDmlDLOqTwmA8EVV2Uph-R26pzFmHUuC6aNaxOtz5pl9H1oumWWymBsvtK6zkLb1x82c22H2LcmJuCUHDnTBnu27yPydj99nTzms-eHp8ndLEchFeRjaaBgUEgqlbHUjq2reQ11ySrkSoLBYsyQIkqlhOCVkRYARfoMEluhGJHLnXflu8_ehqjnXe-X6aTmwAVNdlUk6mpHoe9C8NbplW8Wxm80o3oblE5B6W1QCb3YC_tqYes_8DeZBOQ7YN20dvOvSL9PX36E3zLDcZc</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2523056196</pqid></control><display><type>article</type><title>Effect of saltwater intrusion on activated sludge flocculation</title><source>Wiley Journals</source><creator>Berde, Manisha ; Jolis, Domènec</creator><creatorcontrib>Berde, Manisha ; Jolis, Domènec</creatorcontrib><description>Saltwater addition negatively impacted the settling properties of the activated sludge in a sequencing batch reactor, which in turn caused the effluent quality and the dewatering properties to deteriorate. Experiments showed that increasing sodium ion concentrations above 1 meq/L interfered with bio‐flocculation by ion exchange of calcium ions displaced by sodium in mixed liquor flocs, causing increases in the sludge volume index, total suspended solids, and chemical oxygen demand concentrations of the final effluent and in the times of the time to filter test of the mixed liquor. Experiments were also conducted to reverse mixed liquor de‐flocculation by adding calcium ions in wastewater with different sodium chloride concentrations and a positive relationship was found between calcium ion added and improved effluent quality. Calcium ion concentrations above 1.6 meq/L proved to be beneficial for adhesion of microbial aggregates leading to the formation of stable flocs and improved sludge dewatering by reversing the ion exchange phenomenon observed with sodium concentrations above 1 meq/L. Monovalent‐to‐divalent ratios did not provide predictive information on de‐flocculation. Hence, individual ion concentrations in addition to monovalent‐to‐divalent cation ratios are important in the onset of de‐flocculation effects while a system‐specific concentration threshold was measured under which no adverse effects were observed.
Practitioner points
The adverse effects of varying concentrations of sodium chloride on the biological process affecting bioflocculation and effluent quality.
Impact of sodium on the health of the mixed liquor as well as on dewatering processes.
Prediction of sea level rise due to climate change will impact utilities situated along the coast with saltwater intrusion problems.
Management of dewatered flows containing saltwater from onsite construction
Identify management practices to reduce the impact of saltwater on the wastewater treatment plant.
Addition of divalent Cation (CaCl2) to improve de‐flocculation of biological sludge, effluent quality and dewatering properties caused by saltwater intrusion.</description><identifier>ISSN: 1061-4303</identifier><identifier>EISSN: 1554-7531</identifier><identifier>DOI: 10.1002/wer.1455</identifier><identifier>PMID: 32929774</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Activated sludge ; Batch reactors ; Biofloc technology ; Biological activity ; biological process ; Calcium ; calcium chloride ; Calcium ions ; Cations ; Chemical oxygen demand ; Climate change ; Dewatering ; de‐flocculation ; Effluents ; Flocculation ; Ion exchange ; Ions ; Liquor ; Microorganisms ; Properties ; Ratios ; Saline water ; Saline water intrusion ; Salt water intrusion ; Saltwater intrusion ; Sea level changes ; Sea level rise ; Side effects ; Sludge ; Sludge drying ; Sludge volume index ; Sodium ; Sodium chloride ; Solid suspensions ; Suspended particulate matter ; Total suspended solids ; Utilities ; Wastewater treatment ; Wastewater treatment plants</subject><ispartof>Water environment research, 2021-05, Vol.93 (5), p.750-761</ispartof><rights>2020 Water Environment Federation</rights><rights>2020 Water Environment Federation.</rights><rights>2021 Water Environment Federation</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3495-84a561564049ae0e8efd2d5d71bc2945ac681c0cc499332ba4e55c3fec5e8ebc3</citedby><cites>FETCH-LOGICAL-c3495-84a561564049ae0e8efd2d5d71bc2945ac681c0cc499332ba4e55c3fec5e8ebc3</cites><orcidid>0000-0001-7516-1499 ; 0000-0002-0458-3210</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fwer.1455$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fwer.1455$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32929774$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Berde, Manisha</creatorcontrib><creatorcontrib>Jolis, Domènec</creatorcontrib><title>Effect of saltwater intrusion on activated sludge flocculation</title><title>Water environment research</title><addtitle>Water Environ Res</addtitle><description>Saltwater addition negatively impacted the settling properties of the activated sludge in a sequencing batch reactor, which in turn caused the effluent quality and the dewatering properties to deteriorate. Experiments showed that increasing sodium ion concentrations above 1 meq/L interfered with bio‐flocculation by ion exchange of calcium ions displaced by sodium in mixed liquor flocs, causing increases in the sludge volume index, total suspended solids, and chemical oxygen demand concentrations of the final effluent and in the times of the time to filter test of the mixed liquor. Experiments were also conducted to reverse mixed liquor de‐flocculation by adding calcium ions in wastewater with different sodium chloride concentrations and a positive relationship was found between calcium ion added and improved effluent quality. Calcium ion concentrations above 1.6 meq/L proved to be beneficial for adhesion of microbial aggregates leading to the formation of stable flocs and improved sludge dewatering by reversing the ion exchange phenomenon observed with sodium concentrations above 1 meq/L. Monovalent‐to‐divalent ratios did not provide predictive information on de‐flocculation. Hence, individual ion concentrations in addition to monovalent‐to‐divalent cation ratios are important in the onset of de‐flocculation effects while a system‐specific concentration threshold was measured under which no adverse effects were observed.
Practitioner points
The adverse effects of varying concentrations of sodium chloride on the biological process affecting bioflocculation and effluent quality.
Impact of sodium on the health of the mixed liquor as well as on dewatering processes.
Prediction of sea level rise due to climate change will impact utilities situated along the coast with saltwater intrusion problems.
Management of dewatered flows containing saltwater from onsite construction
Identify management practices to reduce the impact of saltwater on the wastewater treatment plant.
Addition of divalent Cation (CaCl2) to improve de‐flocculation of biological sludge, effluent quality and dewatering properties caused by saltwater intrusion.</description><subject>Activated sludge</subject><subject>Batch reactors</subject><subject>Biofloc technology</subject><subject>Biological activity</subject><subject>biological process</subject><subject>Calcium</subject><subject>calcium chloride</subject><subject>Calcium ions</subject><subject>Cations</subject><subject>Chemical oxygen demand</subject><subject>Climate change</subject><subject>Dewatering</subject><subject>de‐flocculation</subject><subject>Effluents</subject><subject>Flocculation</subject><subject>Ion exchange</subject><subject>Ions</subject><subject>Liquor</subject><subject>Microorganisms</subject><subject>Properties</subject><subject>Ratios</subject><subject>Saline water</subject><subject>Saline water intrusion</subject><subject>Salt water intrusion</subject><subject>Saltwater intrusion</subject><subject>Sea level changes</subject><subject>Sea level rise</subject><subject>Side effects</subject><subject>Sludge</subject><subject>Sludge drying</subject><subject>Sludge volume index</subject><subject>Sodium</subject><subject>Sodium chloride</subject><subject>Solid suspensions</subject><subject>Suspended particulate matter</subject><subject>Total suspended solids</subject><subject>Utilities</subject><subject>Wastewater treatment</subject><subject>Wastewater treatment plants</subject><issn>1061-4303</issn><issn>1554-7531</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LAzEQhoMotlbBXyALXrys5mt2m4sgpX5AQRDFY8jOJrJl261J1tJ_b2qrN2FghuHhmeEl5JzRa0Ypv1lbf80kwAEZMgCZlyDYYZppwXIpqBiQkxDmlDLOqTwmA8EVV2Uph-R26pzFmHUuC6aNaxOtz5pl9H1oumWWymBsvtK6zkLb1x82c22H2LcmJuCUHDnTBnu27yPydj99nTzms-eHp8ndLEchFeRjaaBgUEgqlbHUjq2reQ11ySrkSoLBYsyQIkqlhOCVkRYARfoMEluhGJHLnXflu8_ehqjnXe-X6aTmwAVNdlUk6mpHoe9C8NbplW8Wxm80o3oblE5B6W1QCb3YC_tqYes_8DeZBOQ7YN20dvOvSL9PX36E3zLDcZc</recordid><startdate>202105</startdate><enddate>202105</enddate><creator>Berde, Manisha</creator><creator>Jolis, Domènec</creator><general>Blackwell Publishing Ltd</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H97</scope><scope>K9.</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0001-7516-1499</orcidid><orcidid>https://orcid.org/0000-0002-0458-3210</orcidid></search><sort><creationdate>202105</creationdate><title>Effect of saltwater intrusion on activated sludge flocculation</title><author>Berde, Manisha ; Jolis, Domènec</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3495-84a561564049ae0e8efd2d5d71bc2945ac681c0cc499332ba4e55c3fec5e8ebc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Activated sludge</topic><topic>Batch reactors</topic><topic>Biofloc technology</topic><topic>Biological activity</topic><topic>biological process</topic><topic>Calcium</topic><topic>calcium chloride</topic><topic>Calcium ions</topic><topic>Cations</topic><topic>Chemical oxygen demand</topic><topic>Climate change</topic><topic>Dewatering</topic><topic>de‐flocculation</topic><topic>Effluents</topic><topic>Flocculation</topic><topic>Ion exchange</topic><topic>Ions</topic><topic>Liquor</topic><topic>Microorganisms</topic><topic>Properties</topic><topic>Ratios</topic><topic>Saline water</topic><topic>Saline water intrusion</topic><topic>Salt water intrusion</topic><topic>Saltwater intrusion</topic><topic>Sea level changes</topic><topic>Sea level rise</topic><topic>Side effects</topic><topic>Sludge</topic><topic>Sludge drying</topic><topic>Sludge volume index</topic><topic>Sodium</topic><topic>Sodium chloride</topic><topic>Solid suspensions</topic><topic>Suspended particulate matter</topic><topic>Total suspended solids</topic><topic>Utilities</topic><topic>Wastewater treatment</topic><topic>Wastewater treatment plants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Berde, Manisha</creatorcontrib><creatorcontrib>Jolis, Domènec</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Water environment research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Berde, Manisha</au><au>Jolis, Domènec</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of saltwater intrusion on activated sludge flocculation</atitle><jtitle>Water environment research</jtitle><addtitle>Water Environ Res</addtitle><date>2021-05</date><risdate>2021</risdate><volume>93</volume><issue>5</issue><spage>750</spage><epage>761</epage><pages>750-761</pages><issn>1061-4303</issn><eissn>1554-7531</eissn><abstract>Saltwater addition negatively impacted the settling properties of the activated sludge in a sequencing batch reactor, which in turn caused the effluent quality and the dewatering properties to deteriorate. Experiments showed that increasing sodium ion concentrations above 1 meq/L interfered with bio‐flocculation by ion exchange of calcium ions displaced by sodium in mixed liquor flocs, causing increases in the sludge volume index, total suspended solids, and chemical oxygen demand concentrations of the final effluent and in the times of the time to filter test of the mixed liquor. Experiments were also conducted to reverse mixed liquor de‐flocculation by adding calcium ions in wastewater with different sodium chloride concentrations and a positive relationship was found between calcium ion added and improved effluent quality. Calcium ion concentrations above 1.6 meq/L proved to be beneficial for adhesion of microbial aggregates leading to the formation of stable flocs and improved sludge dewatering by reversing the ion exchange phenomenon observed with sodium concentrations above 1 meq/L. Monovalent‐to‐divalent ratios did not provide predictive information on de‐flocculation. Hence, individual ion concentrations in addition to monovalent‐to‐divalent cation ratios are important in the onset of de‐flocculation effects while a system‐specific concentration threshold was measured under which no adverse effects were observed.
Practitioner points
The adverse effects of varying concentrations of sodium chloride on the biological process affecting bioflocculation and effluent quality.
Impact of sodium on the health of the mixed liquor as well as on dewatering processes.
Prediction of sea level rise due to climate change will impact utilities situated along the coast with saltwater intrusion problems.
Management of dewatered flows containing saltwater from onsite construction
Identify management practices to reduce the impact of saltwater on the wastewater treatment plant.
Addition of divalent Cation (CaCl2) to improve de‐flocculation of biological sludge, effluent quality and dewatering properties caused by saltwater intrusion.</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>32929774</pmid><doi>10.1002/wer.1455</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0001-7516-1499</orcidid><orcidid>https://orcid.org/0000-0002-0458-3210</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1061-4303 |
| ispartof | Water environment research, 2021-05, Vol.93 (5), p.750-761 |
| issn | 1061-4303 1554-7531 |
| language | eng |
| recordid | cdi_pubmed_primary_32929774 |
| source | Wiley Journals |
| subjects | Activated sludge Batch reactors Biofloc technology Biological activity biological process Calcium calcium chloride Calcium ions Cations Chemical oxygen demand Climate change Dewatering de‐flocculation Effluents Flocculation Ion exchange Ions Liquor Microorganisms Properties Ratios Saline water Saline water intrusion Salt water intrusion Saltwater intrusion Sea level changes Sea level rise Side effects Sludge Sludge drying Sludge volume index Sodium Sodium chloride Solid suspensions Suspended particulate matter Total suspended solids Utilities Wastewater treatment Wastewater treatment plants |
| title | Effect of saltwater intrusion on activated sludge flocculation |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-07T18%3A53%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Effect%20of%20saltwater%20intrusion%20on%20activated%20sludge%20flocculation&rft.jtitle=Water%20environment%20research&rft.au=Berde,%20Manisha&rft.date=2021-05&rft.volume=93&rft.issue=5&rft.spage=750&rft.epage=761&rft.pages=750-761&rft.issn=1061-4303&rft.eissn=1554-7531&rft_id=info:doi/10.1002/wer.1455&rft_dat=%3Cproquest_cross%3E2523056196%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2523056196&rft_id=info:pmid/32929774&rfr_iscdi=true |