Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance
In this research, the effect of mixing ratio between primary sludge (PS) and waste activated sludge (WAS) on anaerobic digester performance was investigated. PS to WAS ratios of 65% PS/35% WAS v/v, 50% PS/50% WAS v/v, 35% PS/65% WAS v/v were assessed for a sludge retention time of 23 d at meso...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Taylor & Francis Ltd.
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/54906 |
| _version_ | 1848759493483036672 |
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| author | Yeneneh, A. Sen, Tushar Kayaalp, A. Ang, H. |
| author_facet | Yeneneh, A. Sen, Tushar Kayaalp, A. Ang, H. |
| author_sort | Yeneneh, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this research, the effect of mixing ratio between primary sludge (PS) and waste activated sludge
(WAS) on anaerobic digester performance was investigated. PS to WAS ratios of 65% PS/35% WAS v/v,
50% PS/50% WAS v/v, 35% PS/65% WAS v/v were assessed for a sludge retention time of 23 d at
mesophilic temperature of 36.5°C. The sludge with the mixing ratio of 65/35 v/v produced the high
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est amount of methane for 500 mL digester volume considered in the study. This particular mixing
ratio is similar to the large scale operational condition in Beenyup Wastewater Treatment Plant,
Western Australia. The kinetics of the digestion process was faster for this mixing ratio. In addi
-
tion, methane to carbon dioxide ratio for this mixing ratio of 65/35 v/v was found to be the highest
(2.5–3.1). Sludge biodegradability in terms of reduction of total chemical oxygen demand was 46.6%,
53.7% and 72.3% and volatile solid removal was 32.6%, 25.8% and 34% for mixing ratios of (65/35,
50/50, 35/65)v/v, respectively. The sludge sample with greater proportion of WAS showed better
dewaterability. In general, mixed sludge with higher proportion of PS has better effects on overall
digester performance. |
| first_indexed | 2025-11-14T10:00:46Z |
| format | Journal Article |
| id | curtin-20.500.11937-54906 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:00:46Z |
| publishDate | 2017 |
| publisher | Taylor & Francis Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-549062017-11-24T02:45:37Z Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance Yeneneh, A. Sen, Tushar Kayaalp, A. Ang, H. In this research, the effect of mixing ratio between primary sludge (PS) and waste activated sludge (WAS) on anaerobic digester performance was investigated. PS to WAS ratios of 65% PS/35% WAS v/v, 50% PS/50% WAS v/v, 35% PS/65% WAS v/v were assessed for a sludge retention time of 23 d at mesophilic temperature of 36.5°C. The sludge with the mixing ratio of 65/35 v/v produced the high - est amount of methane for 500 mL digester volume considered in the study. This particular mixing ratio is similar to the large scale operational condition in Beenyup Wastewater Treatment Plant, Western Australia. The kinetics of the digestion process was faster for this mixing ratio. In addi - tion, methane to carbon dioxide ratio for this mixing ratio of 65/35 v/v was found to be the highest (2.5–3.1). Sludge biodegradability in terms of reduction of total chemical oxygen demand was 46.6%, 53.7% and 72.3% and volatile solid removal was 32.6%, 25.8% and 34% for mixing ratios of (65/35, 50/50, 35/65)v/v, respectively. The sludge sample with greater proportion of WAS showed better dewaterability. In general, mixed sludge with higher proportion of PS has better effects on overall digester performance. 2017 Journal Article http://hdl.handle.net/20.500.11937/54906 10.5004/dwt.2017.20483 Taylor & Francis Ltd. unknown |
| spellingShingle | Yeneneh, A. Sen, Tushar Kayaalp, A. Ang, H. Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance |
| title | Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance |
| title_full | Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance |
| title_fullStr | Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance |
| title_full_unstemmed | Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance |
| title_short | Effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance |
| title_sort | effect of primary sludge to waste activated sludge mixing ratio on anaerobic digester performance |
| url | http://hdl.handle.net/20.500.11937/54906 |