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Aerobic granular sludge to treat paper mill effluent: selection of ideal strains that contribute to the formation of strong aggregates
- Source :
- Desalination and Water Treatment. 57:28537-28550
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- The formation of aerobic granules after the treatment of paper mill effluents was feasible. Granular sludge presented a lower fouling potential than flocculent sludge, allowing a higher flux through the membranes in a membrane bioreactor (MBR). However, it was observed that after filtration many of the biogranules disrupted, which increased the membrane fouling. Therefore, the formation of aggregates that are physically and mechanically more resistant to decomposition would be beneficial to an MBR process. This work determines which of the microorganisms found in the aerobic granular sludge contribute to microbial aggregation, thereby increasing the mechanical resistance of aggregates. Nineteen strains were isolated from granular aerobic sludge. Tests for coaggregation showed that some isolates (E2, E7, E9, E13, and E25) were able to improve the formation of granules, while others (E10, E14, E18, and E26) inhibited the aggregation. The extracellular polymeric substances analyses indicated which su...
- Subjects :
- 0301 basic medicine
Waste management
Fouling
Chemistry
business.industry
030106 microbiology
Membrane fouling
Ocean Engineering
Paper mill
Pulp and paper industry
Membrane bioreactor
Pollution
law.invention
03 medical and health sciences
030104 developmental biology
Extracellular polymeric substance
Membrane
law
Sewage treatment
business
Filtration
Water Science and Technology
Subjects
Details
- ISSN :
- 19443986 and 19443994
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Desalination and Water Treatment
- Accession number :
- edsair.doi...........8218e0f1dc2d145e439a69e69aa15bf7