Activated Sludge Process: Upgrade with IFAS
Published on by Karl-Uwe Schmitz, President at Aqua Equip Technologies LLC (AET LLC) in Technology
After explaining how the activated sludge process works in part 1 we are now taking a closer look on how to increase the wastewater treatment capacity of ASP with IFAS systems.
IFAS stands for integrated fixed film activated sludge and describes the combination of fill media attached growth systems with the activated sludge process. The fill media can either be added to the aeration tank as free floating chips or in the form of retrievable fill media cage units. In both cases the fill media fulfills the same purpose: To provide additional surface area within the aeration tank for attached biofilm growth...
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Taxonomy
- Wastewater Treatment
- Solid Wastes & Wastewater Recycling
- Wastewater Treatment Plant Design
- Water & Wastewater
- Water & Wastewater
- Water & Wastewater Operations
- fixed-bed technology
- Fixed bed
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L'action du bras tournant dans le bac d'aération est d'insuffler de l'air libre dans le milieu de boue organique et de liquide contenu dans le bac pour l'empécher de méthaniser sous l'effet du processus de la putréfaction. Ceci a pour effet de supprimer les fissures du matériaux en béton de construction des bacs.
Cette aération n'a aucun apport d'efficacité sur le traitement d'épuration des boues qui sortent dans le même état qu'elles sont entrées dans le bac.
le milieu contenu dans le bac d'aération contient plus de 90% de bactéries mortes, les survivantes, à moité mortes, seront détruites dans le processus de filtration en sortie de la station de traitement.
C'est pour cette raison que les stations d'épuration produisent plus de 45 Millions de tonnes de boues d'excréments annuellement.
The action of the rotating arm in the ventilation tray is to breathe open air into the medium of organic mud and liquid contained in the bin to prevent it from methanizing under the effect of the process of rotting. This removes cracks in the concrete material set up in the bins.
This aeration has no effective input on the treatment of sludge that comes out in the same condition as it entered the bin.
the environment in the ventilation bin contains more than 90% dead bacteria, the survivors, half dead, will be destroyed in the filtration process outside the treatment plant.
For this reason, sewage treatment plants produce more than 45 million tonnes of feces sludge annually.