Optimization of Ozonation Process for the Reduction of Excess Sludge Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design
Sago industries effluent containing large amounts of organic content produced excess sludge which is a serious problem in wastewater treatment. In this study ozonation has been employed for the reduction of excess sludge production in activated sludge process. Central composite design is used to stu...
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Wiley
2012-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/239271 |
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| author | B. Subha M. Muthukumar |
| author_facet | B. Subha M. Muthukumar |
| author_sort | B. Subha |
| collection | DOAJ |
| description | Sago industries effluent containing large amounts of organic content produced excess sludge which is a serious problem in wastewater treatment. In this study ozonation has been employed for the reduction of excess sludge production in activated sludge process. Central composite design is used to study the effect of ozone treatment for the reduction of excess sludge production in sago effluent and to optimise the variables such as pH, ozonation time, and retention time. ANOVA showed that the coefficient determination value (R2) of VSS and COD reduction were 0.9689 and 0.8838, respectively. VSS reduction (81%) was achieved at acidic pH 6.9, 12 minutes ozonation, and retention time of 10 days. COD reduction (87%) was achieved at acidic pH 6.7, 8 minutes of ozonation time, and retention time of 6 days. Low ozonation time and high retention time influence maximum sludge reduction, whereas low ozonation time with low retention time was effective for COD reduction. |
| format | Article |
| id | doaj-art-03b3504790014e67919119cc86c2e8bd |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-03b3504790014e67919119cc86c2e8bd2025-02-03T05:59:02ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/239271239271Optimization of Ozonation Process for the Reduction of Excess Sludge Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite DesignB. Subha0M. Muthukumar1Environmental Engineering and Technology Laboratory, Department of Environmental Sciences, Bharathiar University, Coimbatore 641046, IndiaEnvironmental Engineering and Technology Laboratory, Department of Environmental Sciences, Bharathiar University, Coimbatore 641046, IndiaSago industries effluent containing large amounts of organic content produced excess sludge which is a serious problem in wastewater treatment. In this study ozonation has been employed for the reduction of excess sludge production in activated sludge process. Central composite design is used to study the effect of ozone treatment for the reduction of excess sludge production in sago effluent and to optimise the variables such as pH, ozonation time, and retention time. ANOVA showed that the coefficient determination value (R2) of VSS and COD reduction were 0.9689 and 0.8838, respectively. VSS reduction (81%) was achieved at acidic pH 6.9, 12 minutes ozonation, and retention time of 10 days. COD reduction (87%) was achieved at acidic pH 6.7, 8 minutes of ozonation time, and retention time of 6 days. Low ozonation time and high retention time influence maximum sludge reduction, whereas low ozonation time with low retention time was effective for COD reduction.http://dx.doi.org/10.1100/2012/239271 |
| spellingShingle | B. Subha M. Muthukumar Optimization of Ozonation Process for the Reduction of Excess Sludge Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design The Scientific World Journal |
| title | Optimization of Ozonation Process for the Reduction of Excess Sludge
Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design |
| title_full | Optimization of Ozonation Process for the Reduction of Excess Sludge
Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design |
| title_fullStr | Optimization of Ozonation Process for the Reduction of Excess Sludge
Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design |
| title_full_unstemmed | Optimization of Ozonation Process for the Reduction of Excess Sludge
Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design |
| title_short | Optimization of Ozonation Process for the Reduction of Excess Sludge
Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design |
| title_sort | optimization of ozonation process for the reduction of excess sludge production from activated sludge process of sago industry wastewater using central composite design |
| url | http://dx.doi.org/10.1100/2012/239271 |
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