Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale Model
The purpose of present study was to demonstrate the effect of return sludge ratio which was influenced the treatability of municipal wastewater. The fresh wastewater with identified composition was collected from the influent of a domestic plant, Ghemshar, Iran. To demonstrate the use of activated s...
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| Format: | Article |
| Language: | English |
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Babol Noshirvani University of Technology
2010-01-01
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| Series: | Iranica Journal of Energy and Environment |
| Subjects: | |
| Online Access: | http://idosi.org/ijee/1(1)2010/p8-855105.doc |
| _version_ | 1797228996477321216 |
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| author | M. Sadeghpour G. Najafpour H.A. Rad B. Hosseini |
| author_facet | M. Sadeghpour G. Najafpour H.A. Rad B. Hosseini |
| author_sort | M. Sadeghpour |
| collection | DOAJ |
| description | The purpose of present study was to demonstrate the effect of return sludge ratio which was influenced the treatability of municipal wastewater. The fresh wastewater with identified composition was collected from the influent of a domestic plant, Ghemshar, Iran. To demonstrate the use of activated sludge process in domestic wastewater treatment plant, a bench- scale aerobic digestion tank was used for bench-scale experimental model. A cubical aeration tank and sedimentation tank was fabricated from plexi-glass. Fresh wastewater was introduced into the aerated tank and then the effluent was settled in a settling basin. Some proportional of the aged sludge was recycled to the aeration tank in order to enhance the wastewater treatment. In this experiment, results showed that 8 h hydraulic retention times (HRT) was the suitable operational parameters. In this system, pH range, DO and temperature were 7.5 to 8.5, 4-6 mg/l and 22-25 C, respectively. COD removal was directly related to sludge recycle ratio. By increasing return sludge from 2.5 to 40 percent, the COD removal was increased from 70 to 95 percent. Kinetic parameters and kinetic model for COD removal of biological activated sludge system were determined. |
| first_indexed | 2024-04-24T15:05:34Z |
| format | Article |
| id | doaj.art-22311cbb3ed446fa9f8c4fe687e477f2 |
| institution | Directory Open Access Journal |
| issn | 2079-2115 2079-2123 |
| language | English |
| last_indexed | 2024-04-24T15:05:34Z |
| publishDate | 2010-01-01 |
| publisher | Babol Noshirvani University of Technology |
| record_format | Article |
| series | Iranica Journal of Energy and Environment |
| spelling | doaj.art-22311cbb3ed446fa9f8c4fe687e477f22024-04-02T13:21:36ZengBabol Noshirvani University of TechnologyIranica Journal of Energy and Environment2079-21152079-21232010-01-01115964Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale ModelM. SadeghpourG. NajafpourH.A. RadB. HosseiniThe purpose of present study was to demonstrate the effect of return sludge ratio which was influenced the treatability of municipal wastewater. The fresh wastewater with identified composition was collected from the influent of a domestic plant, Ghemshar, Iran. To demonstrate the use of activated sludge process in domestic wastewater treatment plant, a bench- scale aerobic digestion tank was used for bench-scale experimental model. A cubical aeration tank and sedimentation tank was fabricated from plexi-glass. Fresh wastewater was introduced into the aerated tank and then the effluent was settled in a settling basin. Some proportional of the aged sludge was recycled to the aeration tank in order to enhance the wastewater treatment. In this experiment, results showed that 8 h hydraulic retention times (HRT) was the suitable operational parameters. In this system, pH range, DO and temperature were 7.5 to 8.5, 4-6 mg/l and 22-25 C, respectively. COD removal was directly related to sludge recycle ratio. By increasing return sludge from 2.5 to 40 percent, the COD removal was increased from 70 to 95 percent. Kinetic parameters and kinetic model for COD removal of biological activated sludge system were determined.http://idosi.org/ijee/1(1)2010/p8-855105.docActivated sludgeHydraulic retention timesChemical oxygen demandReturn sludge ratioBiological treatment |
| spellingShingle | M. Sadeghpour G. Najafpour H.A. Rad B. Hosseini Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale Model Iranica Journal of Energy and Environment Activated sludge Hydraulic retention times Chemical oxygen demand Return sludge ratio Biological treatment |
| title | Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale Model |
| title_full | Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale Model |
| title_fullStr | Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale Model |
| title_full_unstemmed | Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale Model |
| title_short | Effect of Sludge Recycle Ratio for Improvement of Sewage Treatment, in Ghaemshahr Textile Plant, a Bench Scale Model |
| title_sort | effect of sludge recycle ratio for improvement of sewage treatment in ghaemshahr textile plant a bench scale model |
| topic | Activated sludge Hydraulic retention times Chemical oxygen demand Return sludge ratio Biological treatment |
| url | http://idosi.org/ijee/1(1)2010/p8-855105.doc |
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