Urban Wastewater Treatment in Brazil

Sperling, Marcos von

doi:10.18235/0000397

Cited by 37 publications

(18 citation statements)

References 7 publications

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“…UASB+DHS system expressed significantly less capex and opex values. For most of the UASB+TF, among the various costs, cost of personnel is the maximum for opex [50]. This could be also the reason for the decreased economic costs for UASB+DHS system.…”

Section: Economic Sustainabilitymentioning

confidence: 99%

Downflow Hanging Sponge System: A Self-Sustaining Option for Wastewater Treatment

Maharjan¹,

Hewawasam²,

Hatamoto³

et al. 2021

Promising Techniques for Wastewater Treatment and Water Quality Assessment

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Need of self-sustaining wastewater treatment plants (WWTPs) has become critical to cope up with dynamics of the environmental regulations and rapid advancements in the contemporary technologies. At present there are limited number of self-sustaining WWTPs around the world. The aim of this chapter is to present state -of- art of Downflow Hanging Sponge (DHS) system which was developed as a post treatment unit of Upflow Anaerobic Sludge Blanket (UASB) from sustainability perspective. DHS system is a non-submerged fixed bed trickling filter (TF) that employs a core technology of polyurethane sponges as a media where the microorganisms thrive and major treatment processes take place. This chapter reviews the introduction of DHS system (UASB+DHS) summarizes the quantitative analysis of environmental, economic and social sustainability using indicators. Furthermore, self-sustaining prospects of DHS system are assessed and discussed by comparing with conventional TF (UASB+TF).

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Section: Economic Sustainabilitymentioning

confidence: 99%

Downflow Hanging Sponge System: A Self-Sustaining Option for Wastewater Treatment

Maharjan¹,

Hewawasam²,

Hatamoto³

et al. 2021

Promising Techniques for Wastewater Treatment and Water Quality Assessment

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show abstract

“…In Brazil, unfortunately, much of the domestic sewage is added directly to the water bodies. About 54% of Brazil's sewage is collected and only 69% of the sewage collected is treated [24] and, consequently, the Sars-CoV-2 virus is also released into water bodies. Studies such as [25][26][27] identify the virus in wastewater and, the work developed in Belo Horizonte [28], Brazil, also identified the virus in the sewage system.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Analysis on the Construction of a Web Solution for Hydrometeorological Forecasting Considering Water Body Management and Indicators for the Pandemic of SARS-COV-2

Silva

Pedruzzi

Souza

et al. 2021

Preprint

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Currently, the NCAR (U.S. National Center for Atmospheric Research), the institution responsible for the WRF-Hydro (Weather Research and Forecasting - Hydro) model initiative, highlights four major global challenges: floods, pollution, droughts, and biodiversity. Thus, given the current scenario of a global pandemic caused by the Sars-CoV-2 virus (Covid19), the importance of hydrological studies, their correlation with contamination levels, and incidence of COVID-19 cases are also in the spotlight. Among the challenges around water resources management, the lack of good and representative data, especially for small water bodies and developing countries, to perform inferences and to manage these natural resources is critical. This situation applies not only to observational data and but also to input data for hydrological models. In this context, the WRF-Hydro system represents the state of the art for hydrometeorological modeling. Thus, the model emerges as a computational tool that becomes possible to provide auxiliary data for patterns analysis in time series and computational prediction. Also, with the evolution of artificial intelligence (AI), it is possible to consider the integration of this modern approach with the WRF-Hydro model simulations. Therefore, the main of this study is to analyze the feasibility of a web tool that integrates these functionalities. The coupled WRF-Hydro with AI will support the management and generate a water predictability analysis in the MATOPIBA region (Maranhão-Tocantins-Piauí-Bahia), northeastern Brazil, the focus area of this study. Although the WRF-Hydro system demonstrates efficiency in the hydrometeorological simulation for the region, the model has a range of subprocesses which has a high computational cost, especially for long-term studies. Therefore, due to the possibility of integrating these computational tools, it is proposed to develop and analyze the construction of a web tool using the WRF-Hydro system for the short and medium-term with AI tools for the short term (a few hours to a few days), to optimize the computational cost. Thus, the combined application of the WRF-Hydro and AI system can improve the water bodies management and assist the identification of contamination levels by Sars-CoV-2, given the presence of the virus in water bodies and the correlation of the pandemic with hydrological variables.

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“…A composição dos materiais inorgânicos são representados pela presença de areia e substâncias minerais dissolvidas. Já as características biológicas, se resume, aos principais organismos como as bactérias, protozoários, parasitas, fungos e algas (Von Sperling, 2016).…”

Section: Aspectos Introdutórios Sobre Esgoto Sanitário E O Tratamentounclassified

“…Considerando a ilustração da Fig. 1, uma estação tratamento convencional, com lagoas de estabilização ou processo de lodos ativados, é possível prever que uma instalação desse porte necessita de uma estrutura com diversas etapas de tratamento tornando se uma planta robusta e complexa e com alto custo de manutenção e operacionalização (Von Sperling, 2016).…”

Section: Aspectos Introdutórios Sobre Esgoto Sanitário E O Tratamentounclassified

Biodigestores e leito cultivado para tratamento e geração de biogás de efluentes domésticos e resíduos orgânicos

Drumond¹,

Rocha²,

Hermanny³

et al. 2021

RECURSO ÁGUA - Tecnologias E Pesquisas Para O Uso E a Conservação De Ecossistemas Aquáticos

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Urban Wastewater Treatment in Brazil

Cited by 37 publications

References 7 publications

Downflow Hanging Sponge System: A Self-Sustaining Option for Wastewater Treatment

Downflow Hanging Sponge System: A Self-Sustaining Option for Wastewater Treatment

Feasibility Analysis on the Construction of a Web Solution for Hydrometeorological Forecasting Considering Water Body Management and Indicators for the Pandemic of SARS-COV-2

Biodigestores e leito cultivado para tratamento e geração de biogás de efluentes domésticos e resíduos orgânicos

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