Back to Search
Start Over
Enhanced reduction of waste activated sludge at a low temperature by locally isolated strains Pseudomonas sp. VNT and Aeromonas sp. VNT.
- Source :
-
Bioresource Technology . Dec2014, Vol. 174, p134-141. 8p. - Publication Year :
- 2014
-
Abstract
- Appropriate control of waste activated sludge (WAS) is required to solve the annual increment of WAS volume. The low bacterial activity at low temperatures poses a difficulty in reducing or utilizing WAS in cold weather regions and/or during the winter season. This study reveals a practical method to enhance sludge reduction at a low temperature using isolated strains of Pseudomonas and Aeromonas species. The effect of inoculating each strain into WAS was examined at different temperatures (4 °C, 10 °C, 12 °C, 15 °C, 20 °C, and 30 °C) and under an aerobic condition. Sludge reduction showed 2- to 8-fold improvement at the temperature range from 4 °C to 15 °C. Both strains are psychrophilic and can produce protease and lipase for sludge degradation even at low temperatures. Thus, biological WAS treatment at a psychrophilic temperature can be enhanced by inoculating these promising strains. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 174
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 99333182
- Full Text :
- https://doi.org/10.1016/j.biortech.2014.10.005