The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater
The physical characteristics, microbial activities and kinetic properties of the granular sludge biomass were investigated under the influence of different hydraulic retention times (HRT) along with the performance of the system in removal of color and COD of synthetic textile wastewater. The study...
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| Format: | Article |
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Elsevier Ltd.
2011
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| _version_ | 1796856564330528768 |
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| author | Muda, Khalida Aris, Azmi Salim, Mohd. Razman Ibrahim, Zaharah van Loosdrecht, Mark C. M. Ahmad, Azlan N.Aizat Nawahwi, Mohd. Zaini |
| author_facet | Muda, Khalida Aris, Azmi Salim, Mohd. Razman Ibrahim, Zaharah van Loosdrecht, Mark C. M. Ahmad, Azlan N.Aizat Nawahwi, Mohd. Zaini |
| author_sort | Muda, Khalida |
| collection | ePrints |
| description | The physical characteristics, microbial activities and kinetic properties of the granular sludge biomass were investigated under the influence of different hydraulic retention times (HRT) along with the performance of the system in removal of color and COD of synthetic textile wastewater. The study was conducted in a column reactor operated according to a sequential batch reactor with a sequence of anaerobic and aerobic reaction phases. Six stages of different HRTs and different anaerobic and aerobic reaction time were evaluated. It was observed that the increase in HRT resulted in the reduction of organic loading rate (OLR). This has caused a decrease in biomass concentration (MLSS), reduction in mean size of the granules, lowered the settling ability of the granules and reduction of oxygen uptake rate (OUR), overall specific biomass growth rate (ì overall), endogeneous decay rate (k d) and biomass yield (Y obs, Y). When the OLR was increased by adding carbon sources (glucose, sodium acetate and ethanol), there was a slight increase in the MLSS, the granules mean size, ì overall, and biomass yield. Under high HRT, increasing the anaerobic to aerobic reaction time ratio caused an increase in the concentration of MLSS, mean size of granules and lowered the SVI value and biomass yield. The ì overall and biomass yield increased with the reduction in anaerobic/aerobic time ratio. The HRT of 24 h with anaerobic and aerobic reaction time of 17.8 and 5.8 h respectively appear to be the best cycle operation of SBR. Under these conditions, not only the physical properties of the biogranules have improved, the highest removal of color (i.e. 94.1 ± 0.6%) and organics (i.e. 86.5 ± 0.5%) of the synthetic textile dyeing wastewater have been achieved. |
| first_indexed | 2024-03-05T18:44:56Z |
| format | Article |
| id | utm.eprints-29485 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:44:56Z |
| publishDate | 2011 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | utm.eprints-294852019-04-25T01:15:08Z http://eprints.utm.my/29485/ The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater Muda, Khalida Aris, Azmi Salim, Mohd. Razman Ibrahim, Zaharah van Loosdrecht, Mark C. M. Ahmad, Azlan N.Aizat Nawahwi, Mohd. Zaini TA Engineering (General). Civil engineering (General) The physical characteristics, microbial activities and kinetic properties of the granular sludge biomass were investigated under the influence of different hydraulic retention times (HRT) along with the performance of the system in removal of color and COD of synthetic textile wastewater. The study was conducted in a column reactor operated according to a sequential batch reactor with a sequence of anaerobic and aerobic reaction phases. Six stages of different HRTs and different anaerobic and aerobic reaction time were evaluated. It was observed that the increase in HRT resulted in the reduction of organic loading rate (OLR). This has caused a decrease in biomass concentration (MLSS), reduction in mean size of the granules, lowered the settling ability of the granules and reduction of oxygen uptake rate (OUR), overall specific biomass growth rate (ì overall), endogeneous decay rate (k d) and biomass yield (Y obs, Y). When the OLR was increased by adding carbon sources (glucose, sodium acetate and ethanol), there was a slight increase in the MLSS, the granules mean size, ì overall, and biomass yield. Under high HRT, increasing the anaerobic to aerobic reaction time ratio caused an increase in the concentration of MLSS, mean size of granules and lowered the SVI value and biomass yield. The ì overall and biomass yield increased with the reduction in anaerobic/aerobic time ratio. The HRT of 24 h with anaerobic and aerobic reaction time of 17.8 and 5.8 h respectively appear to be the best cycle operation of SBR. Under these conditions, not only the physical properties of the biogranules have improved, the highest removal of color (i.e. 94.1 ± 0.6%) and organics (i.e. 86.5 ± 0.5%) of the synthetic textile dyeing wastewater have been achieved. Elsevier Ltd. 2011-10-15 Article PeerReviewed Muda, Khalida and Aris, Azmi and Salim, Mohd. Razman and Ibrahim, Zaharah and van Loosdrecht, Mark C. M. and Ahmad, Azlan N.Aizat and Nawahwi, Mohd. Zaini (2011) The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater. Water Research, 45 (16). pp. 4711-4721. ISSN 0043-1354 http://dx.doi.org/10.1016/j.watres.2011.05.012 DOI:10.1016/j.watres.2011.05.012 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Muda, Khalida Aris, Azmi Salim, Mohd. Razman Ibrahim, Zaharah van Loosdrecht, Mark C. M. Ahmad, Azlan N.Aizat Nawahwi, Mohd. Zaini The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater |
| title | The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater |
| title_full | The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater |
| title_fullStr | The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater |
| title_full_unstemmed | The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater |
| title_short | The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater |
| title_sort | effect of hydraulic retention time on granular sludge biomass in treating textile wastewater |
| topic | TA Engineering (General). Civil engineering (General) |
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