The performance of a nitrogen-fixing SBR
A laboratory study has successfully demonstrated that a nitrogen deficient thermomechanical pulping wastewater can be effectively treated in a sequencing batch reactor (SBR) operated under conditions of biological nitrogen fixation (the N-ViroTech process). In comparison to continuous stirred tank r...
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| Veröffentlicht in: | Water science and technology 2004-01, Vol.50 (10), p.269-278 |
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| creator | Dennis, M A Cotter, M L Slade, A H Gapes, D J |
| description | A laboratory study has successfully demonstrated that a nitrogen deficient thermomechanical pulping wastewater can be effectively treated in a sequencing batch reactor (SBR) operated under conditions of biological nitrogen fixation (the N-ViroTech process). In comparison to continuous stirred tank reactor activated sludge (CSTR-AS) configurations operated under either nitrogen fixing or nitrogen supplemented conditions, slightly lower removals of dissolved organic material were observed in the SBR. However, this was largely offset by significantly better suspended solids removal in the SBR, which contributes to the overall COD discharge. The settleability and dewaterability of sludge produced by the SBR was significantly better than that obtained from the nitrogen fixing CSTR-AS reactors, and comparable to that of a nitrogen supplemented system. Consistently low total and dissolved nitrogen discharges from the N-ViroTech systems demonstrated the advantage of this system over ones requiring nitrogen supplementation. The feast-famine regime of an SBR-type configuration has significant potential for the application of this technology in the treatment of nitrogen deficient waste streams, particularly those in which conventional single-stage systems may be susceptible to sludge bulking problems. |
| doi_str_mv | 10.2166/wst.2004.0660 |
| format | Article |
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In comparison to continuous stirred tank reactor activated sludge (CSTR-AS) configurations operated under either nitrogen fixing or nitrogen supplemented conditions, slightly lower removals of dissolved organic material were observed in the SBR. However, this was largely offset by significantly better suspended solids removal in the SBR, which contributes to the overall COD discharge. The settleability and dewaterability of sludge produced by the SBR was significantly better than that obtained from the nitrogen fixing CSTR-AS reactors, and comparable to that of a nitrogen supplemented system. Consistently low total and dissolved nitrogen discharges from the N-ViroTech systems demonstrated the advantage of this system over ones requiring nitrogen supplementation. 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In comparison to continuous stirred tank reactor activated sludge (CSTR-AS) configurations operated under either nitrogen fixing or nitrogen supplemented conditions, slightly lower removals of dissolved organic material were observed in the SBR. However, this was largely offset by significantly better suspended solids removal in the SBR, which contributes to the overall COD discharge. The settleability and dewaterability of sludge produced by the SBR was significantly better than that obtained from the nitrogen fixing CSTR-AS reactors, and comparable to that of a nitrogen supplemented system. Consistently low total and dissolved nitrogen discharges from the N-ViroTech systems demonstrated the advantage of this system over ones requiring nitrogen supplementation. The feast-famine regime of an SBR-type configuration has significant potential for the application of this technology in the treatment of nitrogen deficient waste streams, particularly those in which conventional single-stage systems may be susceptible to sludge bulking problems.</description><subject>Activated sludge</subject><subject>Batch reactors</subject><subject>Bioreactors</subject><subject>Bulking sludge</subject><subject>Continuously stirred tank reactors</subject><subject>Discharge</subject><subject>Famine</subject><subject>Flocculation</subject><subject>Industrial Waste</subject><subject>Mechanics</subject><subject>Nitrogen</subject><subject>Nitrogen fixation</subject><subject>Nitrogen Fixation - physiology</subject><subject>Organic Chemicals - isolation & purification</subject><subject>Organic Chemicals - metabolism</subject><subject>Oxygen - metabolism</subject><subject>Pulp mill effluents</subject><subject>Pulping</subject><subject>Reactors</subject><subject>Sewage - chemistry</subject><subject>Sewage - microbiology</subject><subject>Sludge</subject><subject>Suspended solids</subject><subject>Time Factors</subject><subject>Waste Disposal, Fluid - methods</subject><subject>Waste management</subject><subject>Waste streams</subject><subject>Wastewater treatment</subject><issn>0273-1223</issn><issn>1996-9732</issn><isbn>1843394863</isbn><isbn>9781843394860</isbn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><recordid>eNqN0ctLAzEQBvDgA_vQo1dZEKSXrUkmj81Riy8oCFrPYZtN6pbubk12Uf97U1oQPKingeHHBzMfQqcEjykR4vI9tGOKMRtjIfAe6hOlRKok0H00IBkDUCwTcID6mEpICaXQQ4MQlhhjCQwfoR7hggugtI9Gs1ebrK13ja_y2tikcUme1GXrm4WtU1d-lPUieb5-OkaHLl8Fe7KbQ_RyezOb3KfTx7uHydU0NUyKNhWOKMZMzgpK4kIIa51UnNvCYMrmGLBTGVeGFhwDUImZyhmFwkhe8IJxGKKLbe7aN2-dDa2uymDsapXXtumCpkoRQkH-A0pKMvk3JIJknPwHspgYb4pw9DuMpwomiYBIz3_QZdP5On5Qx0cBA5kRFVW6VcY3IXjr9NqXVe4_Y5TedK5j53rTud50Hv3ZLrWbV7b41rte4QtEvKAK</recordid><startdate>20040101</startdate><enddate>20040101</enddate><creator>Dennis, M A</creator><creator>Cotter, M L</creator><creator>Slade, A H</creator><creator>Gapes, D J</creator><general>IWA Publishing</general><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>3V.</scope><scope>7QH</scope><scope>7UA</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8FE</scope><scope>8FG</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>H96</scope><scope>H97</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>L.G</scope><scope>L6V</scope><scope>M0S</scope><scope>M1P</scope><scope>M7S</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>7ST</scope><scope>SOI</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20040101</creationdate><title>The performance of a nitrogen-fixing SBR</title><author>Dennis, M A ; Cotter, M L ; Slade, A H ; Gapes, D J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c476t-6f1944ca4d2147666eef7955edc024b030f9859c2d503327049a423dc75d5d453</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Activated sludge</topic><topic>Batch reactors</topic><topic>Bioreactors</topic><topic>Bulking sludge</topic><topic>Continuously stirred tank reactors</topic><topic>Discharge</topic><topic>Famine</topic><topic>Flocculation</topic><topic>Industrial Waste</topic><topic>Mechanics</topic><topic>Nitrogen</topic><topic>Nitrogen fixation</topic><topic>Nitrogen Fixation - 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In comparison to continuous stirred tank reactor activated sludge (CSTR-AS) configurations operated under either nitrogen fixing or nitrogen supplemented conditions, slightly lower removals of dissolved organic material were observed in the SBR. However, this was largely offset by significantly better suspended solids removal in the SBR, which contributes to the overall COD discharge. The settleability and dewaterability of sludge produced by the SBR was significantly better than that obtained from the nitrogen fixing CSTR-AS reactors, and comparable to that of a nitrogen supplemented system. Consistently low total and dissolved nitrogen discharges from the N-ViroTech systems demonstrated the advantage of this system over ones requiring nitrogen supplementation. The feast-famine regime of an SBR-type configuration has significant potential for the application of this technology in the treatment of nitrogen deficient waste streams, particularly those in which conventional single-stage systems may be susceptible to sludge bulking problems.</abstract><cop>England</cop><pub>IWA Publishing</pub><pmid>15656322</pmid><doi>10.2166/wst.2004.0660</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0273-1223 |
| ispartof | Water science and technology, 2004-01, Vol.50 (10), p.269-278 |
| issn | 0273-1223 1996-9732 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_29911237 |
| source | MEDLINE; EZB-FREE-00999 freely available EZB journals |
| subjects | Activated sludge Batch reactors Bioreactors Bulking sludge Continuously stirred tank reactors Discharge Famine Flocculation Industrial Waste Mechanics Nitrogen Nitrogen fixation Nitrogen Fixation - physiology Organic Chemicals - isolation & purification Organic Chemicals - metabolism Oxygen - metabolism Pulp mill effluents Pulping Reactors Sewage - chemistry Sewage - microbiology Sludge Suspended solids Time Factors Waste Disposal, Fluid - methods Waste management Waste streams Wastewater treatment |
| title | The performance of a nitrogen-fixing SBR |
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