Characterization of Anaerobic Effluent: Seasonal Influence and Use of Anammox Process as Post-treatment

Characterization of Anaerobic Effluent: Seasonal Influence and Use of Anammox Process as Post-treatment

This study aimed to verify if subtropical annual seasonality variation of organic matter and nitrogen ratio facilitates the use of anammox process as a post-treatment of anaerobic effluent. We characterized the anaerobic effluent from a wastewater treatment plant (WWTP) located in Campinas, SP, Braz...

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Bibliographic Details
Published in:Water, air, and soil pollution Vol. 233; no. 5
Main Authors: Sachetto, Pâmela Alexa, Menezes, Rosana Oliveira, Tonetti, Adriano Luiz, Mattos de Oliveira Cruz, Luana
Format: Journal Article
Language:English
Published: Cham Springer International Publishing 01-05-2022
Springer
Springer Nature B.V
Subjects:
Anaerobic processes
Anaerobic treatment
Atmospheric Protection/Air Quality Control/Air Pollution
Climate Change/Climate Change Impacts
Earth and Environmental Science
Effluents
Environment
Environmental monitoring
Hydrogeology
Nitrogen
Organic matter
Purification
Rain
Rain water
Reactors
Seasonal variations
Seasonality
Seasons
Sewage
Soil Science & Conservation
Upflow anaerobic sludge blanket reactors
Wastewater
Wastewater treatment
Wastewater treatment plants
Water Quality/Water Pollution
Water treatment plants
Brazil
Influence; Nitrogen
Organic matter
Seasonality
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Summary:This study aimed to verify if subtropical annual seasonality variation of organic matter and nitrogen ratio facilitates the use of anammox process as a post-treatment of anaerobic effluent. We characterized the anaerobic effluent from a wastewater treatment plant (WWTP) located in Campinas, SP, Brazil. The collected composed samples were from an UASB reactor in different days, hours, and months during 1 year. The mean temperature of all seasons was above 19 °C, which favors anammox activity, and seemed to influence much more than that of pluviosity on effluent composition. It may be explained by the separated sewage collection in Brazil, which is not constructed to receive and transport rainwater, although some not predicted connection may be added in. We also concluded that subtropical annual seasonality of COD/N ratio range (2.2 to 3.1) from anaerobic effluent indicates that the use of anammox process is suitable as post-treatment of anaerobic effluent in subtropical areas. However, as total COD degrades over time and as total nitrogen concentration is influenced by seasons, these factors need to be taken into account in the project and operation of the reactor over the year. Graphical abstract
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-022-05639-0