Effect of anoxic decay process on simultaneous nitrification denitrification in a membrane bioreactor operated without an anoxic tank
This study was focused on evaluating the role and the effect of anoxic decay on the extent of simultaneous nitrification-denitrification (SNdN) process sustained in a single membrane bioreactor. The membrane bioreactor was fed with relatively strong domestic sewage and operated at steady state at a...
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| Veröffentlicht in: | Water science and technology 2010-01, Vol.61 (3), p.771-780 |
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| creator | Sarioglu, M Insel, G Artan, N Orhon, D |
| description | This study was focused on evaluating the role and the effect of anoxic decay on the extent of simultaneous nitrification-denitrification (SNdN) process sustained in a single membrane bioreactor. The membrane bioreactor was fed with relatively strong domestic sewage and operated at steady state at a sludge age of 36 days at a corresponding suspended solids level maintained in the range of 17,500-21,000 mg/L. The SNdN could be sustained due to diffusion limitation of oxygen into the flocs. The evaluation identified an MLSS threshold level of around 17,000-18,000 mg/L below which nitrogen removal was essentially controlled by denitrification and above, the rate limiting mechanism shifted to nitrification maintaining total nitrogen removal efficiency of 85-95% for a typical domestic sewage. The contribution of anoxic decay process to the overall denitrification potential was evaluated as 60%, substantially higher than the remaining 40% associated with the anoxic growth during the SNdN process. |
| doi_str_mv | 10.2166/wst.2010.853 |
| format | Article |
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The membrane bioreactor was fed with relatively strong domestic sewage and operated at steady state at a sludge age of 36 days at a corresponding suspended solids level maintained in the range of 17,500-21,000 mg/L. The SNdN could be sustained due to diffusion limitation of oxygen into the flocs. The evaluation identified an MLSS threshold level of around 17,000-18,000 mg/L below which nitrogen removal was essentially controlled by denitrification and above, the rate limiting mechanism shifted to nitrification maintaining total nitrogen removal efficiency of 85-95% for a typical domestic sewage. The contribution of anoxic decay process to the overall denitrification potential was evaluated as 60%, substantially higher than the remaining 40% associated with the anoxic growth during the SNdN process.</description><identifier>ISSN: 0273-1223</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.2010.853</identifier><identifier>PMID: 20150714</identifier><language>eng</language><publisher>England: IWA Publishing</publisher><subject>Anoxia ; Biodegradation, Environmental ; Biomass ; Bioreactors ; Decay ; Denitrification ; Diffusion ; Dye dispersion ; Equipment Design ; Evaluation ; Household wastes ; Hypoxia ; Kinetics ; Membrane reactors ; Nitrification ; Nitrites - chemistry ; Nitrogen - isolation & purification ; Nitrogen removal ; Oxygen - analysis ; Refuse Disposal - methods ; Removal ; Sewage ; Sludge ; Suspended particulate matter ; Suspended solids ; Waste Disposal, Fluid - methods ; Water Purification</subject><ispartof>Water science and technology, 2010-01, Vol.61 (3), p.771-780</ispartof><rights>Copyright IWA Publishing Feb 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c420t-bb5f3e3fb845f31b7158058afbc4386c7139a23198b06667e9ee25377539199f3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20150714$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sarioglu, M</creatorcontrib><creatorcontrib>Insel, G</creatorcontrib><creatorcontrib>Artan, N</creatorcontrib><creatorcontrib>Orhon, D</creatorcontrib><title>Effect of anoxic decay process on simultaneous nitrification denitrification in a membrane bioreactor operated without an anoxic tank</title><title>Water science and technology</title><addtitle>Water Sci Technol</addtitle><description>This study was focused on evaluating the role and the effect of anoxic decay on the extent of simultaneous nitrification-denitrification (SNdN) process sustained in a single membrane bioreactor. The membrane bioreactor was fed with relatively strong domestic sewage and operated at steady state at a sludge age of 36 days at a corresponding suspended solids level maintained in the range of 17,500-21,000 mg/L. The SNdN could be sustained due to diffusion limitation of oxygen into the flocs. The evaluation identified an MLSS threshold level of around 17,000-18,000 mg/L below which nitrogen removal was essentially controlled by denitrification and above, the rate limiting mechanism shifted to nitrification maintaining total nitrogen removal efficiency of 85-95% for a typical domestic sewage. The contribution of anoxic decay process to the overall denitrification potential was evaluated as 60%, substantially higher than the remaining 40% associated with the anoxic growth during the SNdN process.</description><subject>Anoxia</subject><subject>Biodegradation, Environmental</subject><subject>Biomass</subject><subject>Bioreactors</subject><subject>Decay</subject><subject>Denitrification</subject><subject>Diffusion</subject><subject>Dye dispersion</subject><subject>Equipment Design</subject><subject>Evaluation</subject><subject>Household wastes</subject><subject>Hypoxia</subject><subject>Kinetics</subject><subject>Membrane reactors</subject><subject>Nitrification</subject><subject>Nitrites - chemistry</subject><subject>Nitrogen - isolation & purification</subject><subject>Nitrogen removal</subject><subject>Oxygen - analysis</subject><subject>Refuse Disposal - methods</subject><subject>Removal</subject><subject>Sewage</subject><subject>Sludge</subject><subject>Suspended particulate matter</subject><subject>Suspended solids</subject><subject>Waste Disposal, Fluid - 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chemistry</topic><topic>Nitrogen - isolation & purification</topic><topic>Nitrogen removal</topic><topic>Oxygen - analysis</topic><topic>Refuse Disposal - methods</topic><topic>Removal</topic><topic>Sewage</topic><topic>Sludge</topic><topic>Suspended particulate matter</topic><topic>Suspended solids</topic><topic>Waste Disposal, Fluid - methods</topic><topic>Water Purification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sarioglu, M</creatorcontrib><creatorcontrib>Insel, G</creatorcontrib><creatorcontrib>Artan, N</creatorcontrib><creatorcontrib>Orhon, D</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Engineering Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>MEDLINE - 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| identifier | ISSN: 0273-1223 |
| ispartof | Water science and technology, 2010-01, Vol.61 (3), p.771-780 |
| issn | 0273-1223 1996-9732 |
| language | eng |
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| source | MEDLINE; EZB-FREE-00999 freely available EZB journals |
| subjects | Anoxia Biodegradation, Environmental Biomass Bioreactors Decay Denitrification Diffusion Dye dispersion Equipment Design Evaluation Household wastes Hypoxia Kinetics Membrane reactors Nitrification Nitrites - chemistry Nitrogen - isolation & purification Nitrogen removal Oxygen - analysis Refuse Disposal - methods Removal Sewage Sludge Suspended particulate matter Suspended solids Waste Disposal, Fluid - methods Water Purification |
| title | Effect of anoxic decay process on simultaneous nitrification denitrification in a membrane bioreactor operated without an anoxic tank |
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