Household-based biodigesters promote reduction of enteric virus and bacteria in vulnerable and poverty rural area. (September 2019)

• Record Type: Journal Article
• Authors: Célia da Silva Lanna, Maria; Viancelli, Aline; Michelon, Wiliam; Castro Carvalho, Sergio Vinícius; de Almeida dos Reis, Deyse; Fernandez de Salles, Luiz Antônio; Sant'Anna, Iago Hashimoto; Resende, Letícia Teresinha; de Souza Ferreira, Clovis; Aparecido das Chagas, Igor; Hernández, Marta; Treichel, Helen; Rodríguez-Lázaro, David; Fongaro, Gislaine
• Is Part Of: Environmental pollution. Volume 252(2019):Part A
• Page Start: 8
• Page End: 13
• Publication Date: 2019-09
• Subjects: Decentralized sanitation -- Pathogen removal -- Viruses and bacteria reduction -- Public health -- Water management; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2019.05.104
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: The present study evaluated the river water quality improvement by implementation of household-based biodigesters in vulnerability and poverty rural area, in Minas Gerais State-Brazil. For that, 78 household-based biodigesters were installed for domestic wastewater treatment. Wastewater was collected before and after treatment and the physicochemical parameters and pathogens removal (human adenovirus (HAdV), hepatitis A (HAV) virus, Salmonella sp. and Escherichia coli ) were evaluated; Additionally, river water was sampled before and after the household-based biodigesters implementation, to verify the contamination reduction and the positive impact of domestic wastewater treatment on waterborne pathogen reduction, considering HAdV, HAV, Salmonella sp. and E. coli quantification. The applicability in real-scale of decentralized treatment systems using household-based biodigesters promoted reduction of 90, 99, 99.99 and 99.999% from HAV, Salmonella sp., E. coli and HAdV from domestic wastewater, respectively; The river water quality improvement before the wastewater treatment application was highlight in the present study, considering that the reduction of waterborne pathogens in this water in 90, 99.99 and 99.999% of E. coli, HAV and HAdV, respectively ( Salmonella sp. was not detected in river water). In general, this is an important study for encouraging the decentralized sanitation in vulnerable and poverty area, as well in rural sites, considering the positive impact of this implementation on public health. Graphical abstract: Image 1069 Highlights: Reducing water pollution in vulnerable areas; Household biodigesters were implemented in real-sclale. Pathogens agents were reduced from domestic sewage and river water. Incentive to water remediation and treatment of domestic sewage in poor places.