Rural blackwater treatment by a full-scale Brazilian Biodigester Septic Tank: microbial indicators and pathogen removal efficiency

Oliveira, Thaíssa Jucá Jardim; Santiago, Aníbal da Fonseca; Lanna, Maria Célia da Silva; Fongaro, Gislaine; Milagres, Natália Ladeira; Cunha, Thalita Ramos; Corrêa, Andreíza Liká Itó

doi:10.1007/s11356-020-12229-2

Cited by 3 publications

(1 citation statement)

References 30 publications

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“…Si este tiempo no es suficiente, puede afectar la eficiencia de remoción de la materia orgánica. Es importante asegurarse de que el tiempo de retención hidráulica sea el adecuado para permitir una descomposición completa de la materia orgánica (Oliveira et al, 2023).…”

Section: Diseño De Investigaciónunclassified

Eficiencia de los biodigestores en la remoción de DBO5, DQO y SST en Cabracancha, Chota, Cajamarca

Mego Torres

2023

Nor@ndina

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Section: Diseño De Investigaciónunclassified

Eficiencia de los biodigestores en la remoción de DBO5, DQO y SST en Cabracancha, Chota, Cajamarca

Mego Torres

2023

Nor@ndina

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Characterisation of Blackwater from Human Transportation Systems Equipped with Vacuum Toilets and Controlled Emissions Tanks and its Impact on Solid/Liquid Separation Technologies

Jadhav,

Brown,

Williams

et al. 2024

Preprint

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Assessment of Groundwater Decontamination Processes around a Dismantled Septic Tank Using GIS and Statistical Analysis

Mester

Szabó

Sajtos

et al. 2023

Water

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Septic tanks without proper construction and insulation entail a significant risk to the environment. In this study, the environmental impacts of a permeably designed septic tank on shallow groundwater contamination are investigated, and changes in water quality in the period after its elimination in 2014 are assessed. For the purpose of evaluating the pollution level of the site, 10 monitoring wells were installed around the septic tank in 2012 and long-term monitoring was carried out. Analytical measurements revealed a significant level of groundwater contamination in the operational period of the septic tank. Extremely high concentrations of NH4+ (>90 mg/L) were observed in the closest monitoring wells, and in most of the wells, concentrations exceeded the relevant contamination limit. δD and δ18O isotopic ratios of monitoring wells within 1 m from the septic tank indicate continuous recharge of sewage water originating from deeper aquifers. The groundwater dome resulting from the wastewater discharge exceeded 1.1 m, within a distance of 25 m. Statistical analyses also revealed significant changes in water quality depending on the monitoring well location from the septic tank. In the period after the septic tank elimination, considerable changes have been detected. Following the cessation of the wastewater discharge, the groundwater dome around the septic tank disappeared; therefore, differences in groundwater levels have decreased from more than 1 m to a few cm. Significant positive changes were detected in the water quality parameters investigated after the dismantling of the septic tank. Five years after the cessation of the pollutant supply, concentrations still exceeded the contamination limit in most of the monitoring wells, indicating slow decontamination processes with a permanently high level of pollution.

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Rural blackwater treatment by a full-scale Brazilian Biodigester Septic Tank: microbial indicators and pathogen removal efficiency

Cited by 3 publications

References 30 publications

Eficiencia de los biodigestores en la remoción de DBO5, DQO y SST en Cabracancha, Chota, Cajamarca

Eficiencia de los biodigestores en la remoción de DBO5, DQO y SST en Cabracancha, Chota, Cajamarca

Characterisation of Blackwater from Human Transportation Systems Equipped with Vacuum Toilets and Controlled Emissions Tanks and its Impact on Solid/Liquid Separation Technologies

Assessment of Groundwater Decontamination Processes around a Dismantled Septic Tank Using GIS and Statistical Analysis

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