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Göteborgs universitets publikationer

Nonoxidative removal of organics in the activated sludge process

Författare och institution:
Oskar Modin (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik, Chalmers); Frank Persson (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik, Chalmers); Britt-Marie Wilén (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik, Chalmers); Malte Hermansson (Institutionen för kemi och molekylärbiologi)
Publicerad i:
Critical Reviews in Environmental Science and Technology, 46 ( 7 ) s. 635-672
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
The activated sludge process is commonly used to treat wastewater by aerobic oxidation of organic pollutants into carbon dioxide and water. However, several nonoxidative mechanisms can also contribute to removal of organics. Sorption onto activated sludge can remove a large fraction of the colloidal and particulate wastewater organics. Intracellular storage of, e.g., polyhydroxyalkanoates (PHA), triacylglycerides (TAG), or wax esters can convert wastewater organics into precursors for high-value products. Recently, several environmental, economic, and technological drivers have stimulated research on nonoxidative removal of organics for wastewater treatment. In this paper, we review these nonoxidative removal mechanisms as well as the existing and emerging process configurations that make use of them for wastewater treatment. Better utilization of nonoxidative processes in activated sludge could reduce the wasteful aerobic oxidation of organic compounds and lead to more resource-efficient wastewater treatment plants.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Geovetenskap och miljövetenskap ->
Adsorption, colloids, contact-stabilization, DLVO theory, high-rate activated sludge, polyhydroxyalkanoate, triacylglyceride, waste-water treatment, extracellular polymeric substances, particle-size, distribution, poly-beta-hydroxybutyrate, chemical oxygen-demand, polyhydroxyalkanoate pha production, biological phosphorus removal, in-situ transesterification, different operational modes, mixed, microbial cultures
Chalmers styrkeområden:
Chalmers drivkrafter:
Hållbar utveckling
Postens nummer:
Posten skapad:
2016-05-27 14:14

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