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Disintegrated Waste-Activated Sludge (NO 2 /FNA Method) as a Source of Carbon for Denitrification in the Mainstream of a WWTP.
- Source :
- Resources (2079-9276); Jun2024, Vol. 13 Issue 6, p80, 15p
- Publication Year :
- 2024
-
Abstract
- The deficiency of readily biodegradable organic carbon can be a significant limitation to effective nitrogen removal during wastewater denitrification. Waste-activated sludge (WAS) is a source of carbon produced directly at wastewater treatment plants (WWTPs). Raw WAS has a large molecular weight and complex chemical structure molecules that are not easily available for microorganisms. In this study, easily biodegradable organic fractions were released using pH control and/or nitrites and nitric acid (NO<subscript>2</subscript>/FNA). The obtained results indicated that WAS can be a sufficient carbon source for denitrification in WWTPs that are at risk of minor effluent violations. The implementation of WAS disintegration with the use of pH control and NO<subscript>2</subscript>/FNA allowed for the denitrification of an additional 0.5 and 0.8 mgN-NO<subscript>3</subscript>/L. WAS disintegration, besides being a source of carbon generation, reduces the volume of sludge and leads to the implementation of a closed-loop system. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20799276
- Volume :
- 13
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Resources (2079-9276)
- Publication Type :
- Academic Journal
- Accession number :
- 178194803
- Full Text :
- https://doi.org/10.3390/resources13060080