Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A sequencing batch anaerobic reactor for treating piggery wastewater
AbstractA study was performed using a 16 litre batch anaerobic reactor for treating piggery wastewater. Operation of the reactor resembled that of the aerobic SBR process (sequencing-batch reactor) and was cyclic. Each cycle comprised settle, discharge, feed and react modes. Hydraulic retention times (HRT) of 15, 10, 5, 3 and 1 day were investigated. Liquid-solid separation within the reactor occurred readily without the aid of flocculating agents, leading to the development of a sludge blanket which could be expanded. Sludge retention times exceeded the HRT by a wide margin. For TCOD and TBOD loading rates of 0·40–6·45 and 0·20–2·45 g litre−1 day−1, reductions ranged from 53–85% and 68–89% respectively. Transient-state gas quality was very stable and methane content ranged between 76 and 80%. Rising gas bubbles did resuspend some settled sludge during ‘settle’ leading to quantities of suspended material leaving the reactor. The reactor required very little operator attention since it was effectively controlled by a microprocessor controller.
A sequencing batch anaerobic reactor for treating piggery wastewater
AbstractA study was performed using a 16 litre batch anaerobic reactor for treating piggery wastewater. Operation of the reactor resembled that of the aerobic SBR process (sequencing-batch reactor) and was cyclic. Each cycle comprised settle, discharge, feed and react modes. Hydraulic retention times (HRT) of 15, 10, 5, 3 and 1 day were investigated. Liquid-solid separation within the reactor occurred readily without the aid of flocculating agents, leading to the development of a sludge blanket which could be expanded. Sludge retention times exceeded the HRT by a wide margin. For TCOD and TBOD loading rates of 0·40–6·45 and 0·20–2·45 g litre−1 day−1, reductions ranged from 53–85% and 68–89% respectively. Transient-state gas quality was very stable and methane content ranged between 76 and 80%. Rising gas bubbles did resuspend some settled sludge during ‘settle’ leading to quantities of suspended material leaving the reactor. The reactor required very little operator attention since it was effectively controlled by a microprocessor controller.
A sequencing batch anaerobic reactor for treating piggery wastewater
Wun-Jern, Ng (Autor:in)
Biological Wastes ; 28 ; 39-51
28.07.1988
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Utilization of Sequencing Batch Reactor for In Situ Piggery Wastewater Treatment
| Online Contents | 1997