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Davi Edson Sales De ,souza - One of the best experts on this subject based on the ideXlab platform.
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Análise do limite da capacidade de escoamento de esgoto sanitário em tubulação interceptora assentada em área urbana
2013Co-Authors: Davi Edson Sales De ,souzaAbstract:O objetivo deste trabalho foi analisar o limite da capacidade de escoamento de esgoto sanitário em tubulação interceptora assentada na área urbana do município de Belém – PA. Para isso, foram considerados a Bacia de Esgotamento 5 (BE 5), as projeções populacionais e de produção de esgoto (2010-2030) da área oficial com coleta e transporte de esgoto da BE 5 (Área 1) e da área total dessa Bacia (Área 2), os 100m (cem) do interceptor assentado na BE 5 (chegada da Estação Elevatória de Esgoto do Una), bem como as informações identificadas dessa tubulação e a alteração de declividade proposta neste trabalho. Foi executado o dimensionamento hidráulico e verificou-se que na Área 1, para todas as declividades escolhidas, o interceptor terá capacidade de escoamento no período de 2010-2030, chegando a lâmina líquida máxima de 0,225 em 2030. No entanto, para a Área 2 verificou-se que a capacidade de escoamento terá comprometimento, quando utilizamos três das sete declividades estimadas, chegando a lâmina líquida máxima de 0,950 em 2030, indo de encontro ao recomentado na NBR 9649/1986 Projeto de Rede Coletora de Esgoto Sanitário (0,750). Recomenda-se, neste caso, a reestruturação/ampliação do sistema de coleta e transporte de esgoto da BE 5, em virtude do aumento populacional e de produção de esgoto, resultante da nova divisão de Bacias de Esgotamento realizado no PDSES (2010).ABSTRACT: The objective of this study was to analyze the capacity limit for disposal of sanitary sewer interceptor pipe seated in the urban area of the municipality of Belém - PA . For this, we considered the Basin Depletion 5 (BE 5), population and production wastewater (2010-2030) the official area with Sewage Collection and transportation of BE 5 (Area 1) and the total area of this bowl projections (area 2), the 100 (one hundred) of the interceptor seated in BE 5 (arrival of Sewage Pumping Station Una), and the information identified this pipe and slope changes proposed in this paper. Hydraulic sizing was performed and it was found that the first area for all selected slope, the interceptor will be able to flow over the period from 2010 to 2030, reaching a maximum water depth of 0,225 in 2030. However, for Area 2 it was found that the flow capacity will compromise when used three of the seven estimated slopes, the maximum water depth reaching 0,950 in 2030, going against type recommended by the NBR 9649/1986 Draft Catch Network Sanitary Sewer (0.750). It is recommended, in this case, the restructuring/expansion of Sewage Collection and transportation of BE 5, due to population increase and production of Sewage resulting from the new division Basin Depletion held at PDSES (2010 ) system
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Análise do limite da capacidade de escoamento de esgoto sanitário em tubulação interceptora assentada em área urbana
Programa de Pós-Graduação em Engenharia Civil, 2013Co-Authors: Davi Edson Sales De ,souzaAbstract:The objective of this study was to analyze the capacity limit for disposal of sanitary sewer interceptor pipe seated in the urban area of the municipality of Belém - PA . For this, we considered the Basin Depletion 5 (BE 5), population and production wastewater (2010-2030) the official area with Sewage Collection and transportation of BE 5 (Area 1) and the total area of this bowl projections (area 2), the 100 (one hundred) of the interceptor seated in BE 5 (arrival of Sewage Pumping Station Una), and the information identified this pipe and slope changes proposed in this paper. Hydraulic sizing was performed and it was found that the first area for all selected slope, the interceptor will be able to flow over the period from 2010 to 2030, reaching a maximum water depth of 0,225 in 2030. However, for Area 2 it was found that the flow capacity will compromise when used three of the seven estimated slopes, the maximum water depth reaching 0,950 in 2030, going against type recommended by the NBR 9649/1986 Draft Catch Network Sanitary Sewer (0.750). It is recommended, in this case, the restructuring/expansion of Sewage Collection and transportation of BE 5, due to population increase and production of Sewage resulting from the new division Basin Depletion held at PDSES (2010 ) system.CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorO objetivo deste trabalho foi analisar o limite da capacidade de escoamento de esgoto sanitário em tubulação interceptora assentada na área urbana do município de Belém – PA. Para isso, foram considerados a Bacia de Esgotamento 5 (BE 5), as projeções populacionais e de produção de esgoto (2010-2030) da área oficial com coleta e transporte de esgoto da BE 5 (Área 1) e da área total dessa Bacia (Área 2), os 100m (cem) do interceptor assentado na BE 5 (chegada da Estação Elevatória de Esgoto do Una), bem como as informações identificadas dessa tubulação e a alteração de declividade proposta neste trabalho. Foi executado o dimensionamento hidráulico e verificou-se que na Área 1, para todas as declividades escolhidas, o interceptor terá capacidade de escoamento no período de 2010-2030, chegando a lâmina líquida máxima de 0,225 em 2030. No entanto, para a Área 2 verificou-se que a capacidade de escoamento terá comprometimento, quando utilizamos três das sete declividades estimadas, chegando a lâmina líquida máxima de 0,950 em 2030, indo de encontro ao recomentado na NBR 9649/1986 Projeto de Rede Coletora de Esgoto Sanitário (0,750). Recomenda-se, neste caso, a reestruturação/ampliação do sistema de coleta e transporte de esgoto da BE 5, em virtude do aumento populacional e de produção de esgoto, resultante da nova divisão de Bacias de Esgotamento realizado no PDSES (2010)
Raimundo Nonato Lima Filho - One of the best experts on this subject based on the ideXlab platform.
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coleta e tratamento de esgoto sob a percepcao dos ribeirinhos da cidade de juazeiro bahia Collection and treatment of Sewage in the perception of the riparian population in juazeiro bahia
Social Science Research Network, 2016Co-Authors: Antonio Henrique Habib Carvalho, Daniele De Castro Pessoa De Melo, Raimundo Nonato Lima FilhoAbstract:Portuguese Abstract: Este artigo traz a discussao a universalizacao e a governanca do sistema de saneamento basico a partir da promulgacao da Lei 11.445/2007, questionando o acesso aos servicos de saneamento basico na perspectiva do direito social. O objetivo principal foi avaliar a percepcao e satisfacao da populacao ribeirinha da cidade de Juazeiro-BA sobre a coleta e tratamento dos efluentes domesticos. Como objetivo especifico, propos evidenciar a (in) adequacao do deposito e tratamento dos efluentes domiciliares. A metodologica utilizada foi uma pesquisa exploratoria entre os paradigmas quantitativo e o qualitativo. Como resultado identificou-se que a populacao percebe saneamento basico numa visao reducionista e limitada. Quanto a coleta de esgoto, o nivel de insatisfacao chega a 64%, tambem foi identificado que mais da metade dos moradores das residencias populares reclamam da ineficacia da coleta dos efluentes e reconhecem que grande parte e despejada diretamente no rio ainda na sua forma in natura. Este trabalho contribuiu para a discussao sobre as desigualdades de acesso aos servicos de saneamento basico, na perspectiva do direito social. English Abstract: This article discusses the universalization and the governance of the sanitation system from the enactment of law 11,445/2007, questioning the access to basic sanitation services in social law. The main objective was to evaluate the perception and satisfaction of the riparian population in Juazeiro-BA, a Brazilian city, about the Collection and treatment of domestic wastewater. As a specific objective, it proposed to highlight the (in) adequacy of the deposit and household effluent treatment. The methodology used was an exploratory research between quantitative and qualitative paradigms. As a result it was identified that the population understands basic sanitation in a reductionist and limited vision. As regards Sewage Collection, the level of dissatisfaction reaches 64%. Besides that, more than half of the residents of popular houses are complaining about the ineffectiveness of the Collection of the effluents. They recognize that most of it is dumped directly into the river still in natura. This work contributed to the discussion on the inequalities of access to basic sanitation services, from the perspective of social right
Keshab Sharma - One of the best experts on this subject based on the ideXlab platform.
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Opportunities for reducing coagulants usage in urban water management: The Oxley Creek Sewage Collection and Treatment System as an example
Water Research, 2019Co-Authors: Sirajus Salehin, Mario Rebosura, Reece Wong, Jagadeeshkumar Kulandaivelu, Wakib Khan, Paul Mcphee, Guangming Jiang, Christopher J. Howard, Pete Smith, Keshab SharmaAbstract:Abstract Iron and aluminium based coagulants are used in enormous amounts and play an essential role in urban water management globally. They are dosed at drinking water production facilities for the removal of natural organic matter. Iron salts are also dosed to sewers for corrosion and odour control, and at wastewater treatment plants (WWTPs) for phosphate removal from wastewater and hydrogen sulfide removal from biogas. A recent laboratory study revealed that iron dosed to sewers is available for phosphate and hydrogen sulfide removal in the downstream WWTP. This study demonstrates for the first time under real-life conditions the practical feasibility and effectiveness of the strategy through a year-long full-scale investigation. Over a period of 5 months, alum dosing at ∼190 kg Al/day to the bioreactor in a full-scale WWTP was stopped, while FeCl2 dosing at ∼160 kg Fe/day in the upstream network was commenced. Extensive sampling campaigns were conducted over the baseline, trial and recovery periods to investigate sulfide control in sewers and its flow-on effects on phosphate in WWTP effluent, H2S in biogas, as well as on the WWTP effluent hypochlorite disinfection process. A plant-wide mass balance analysis showed that the Fe2+ dosed upstream was effectively used for P removal in the activated sludge tanks, with an effluent phosphate concentration comparable to that in the baseline period (i.e. with alum dosing to the bioreactor). Simultaneously, hydrogen sulfide concentration in biogas decreased ∼43%, from 495 ± 10 to 283 ± 4 ppm. No effects on biological nitrogen removal and disinfection processes were observed. Both effluent phosphate and H2S in biogas increased in the recovery period, when in-sewer dosing of FeCl2 was stopped. X-ray diffraction failed to reveal the presence of vivianite in the digested sludge, providing strong evidence that thermal hydrolysis prevented the formation of vivianite during anaerobic digestion. The latter limits the potential for selective recovery of Fe and P through magnetic separation. Overall, our study clearly demonstrates the multiple beneficial reuse of iron in a real urban wastewater system and urges water utilities to adopt an integrated approach to coagulant use in urban water management.
Peter A Vanrolleghem - One of the best experts on this subject based on the ideXlab platform.
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Conceptualizing the Sewage Collection system for integrated sewer-WWTP modelling and optimization
Journal of Hydrology, 2019Co-Authors: Lisha Guo, Sovanna Tik, Julia M Ledergerber, Domenico Santoro, Elsayed Elbeshbishy, Peter A VanrolleghemAbstract:Abstract This paper proposes a new conceptual modelling approach and calibration method for sewer systems, driven by the interest in using the sewer as a bioreactor and long-term biochemical modelling of the integrated system consisting of the Sewage Collection system and the wastewater treatment plant (WWTP). The new approach consists of a method for simplifying a complex sewer network into a simpler, yet accurate, computationally efficient (conceptual) model able to capture the relevant sewer dynamics, both in terms of water quantity and water quality entering the wastewater treatment plant. Water quality predicted by the conceptual model was assessed using a detailed biochemical process model and compared against a whole-network biochemical model that covers all hydraulic segments and pipes of the sewer system. The conceptual biochemical model achieves very similar results as the whole-network model in terms of water quality, while providing much faster simulation speed (minutes rather than hours) and easy calibration. Given these advantages, the conceptual biochemical model of a Collection system can be used in an integrated model with which sewer and WWTP can be simulated simultaneously for long-term evaluation of optimization scenarios. The model was applied to the prediction of the biochemical components, e.g. sulfide, organics and nutrients, which are essential for the control and management of sewer corrosion and pollutant removal.
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conceptualizing the Sewage Collection system for integrated sewer wwtp modelling and optimization
International Conference on Urban Drainage Modelling, 2018Co-Authors: Lisha Guo, Sovanna Tik, Julia M Ledergerber, Domenico Santoro, Elsayed Elbeshbishy, Peter A VanrolleghemAbstract:In this paper, a new conceptual modelling approach and calibration method is proposed for integrating Sewage Collection system and wastewater treatment plant (WWTP) operations. The method consists of simplifying a complex sewer network into a computationally efficient (conceptual) model able to capture the sewer dynamics, both in terms of flow rate and water quality, entering the wastewater treatment plant. Biochemical process modelling was carried out on this conceptual model and compared with a whole-network biochemical model which covered all pipes of a sewer system. The conceptual biochemical model can achieve similar results as the whole-network model in terms of water qualities, but provides fast simulation speed and easy calibration. Those advantages mean that the conceptual biochemical model of a Collection system can be used in an integrated model with which sewer and WWTP can be simulated simultaneously for long-term evaluation of optimization scenarios.
Sirajus Salehin - One of the best experts on this subject based on the ideXlab platform.
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Opportunities for reducing coagulants usage in urban water management: The Oxley Creek Sewage Collection and Treatment System as an example
Water Research, 2019Co-Authors: Sirajus Salehin, Mario Rebosura, Reece Wong, Jagadeeshkumar Kulandaivelu, Wakib Khan, Paul Mcphee, Guangming Jiang, Christopher J. Howard, Pete Smith, Keshab SharmaAbstract:Abstract Iron and aluminium based coagulants are used in enormous amounts and play an essential role in urban water management globally. They are dosed at drinking water production facilities for the removal of natural organic matter. Iron salts are also dosed to sewers for corrosion and odour control, and at wastewater treatment plants (WWTPs) for phosphate removal from wastewater and hydrogen sulfide removal from biogas. A recent laboratory study revealed that iron dosed to sewers is available for phosphate and hydrogen sulfide removal in the downstream WWTP. This study demonstrates for the first time under real-life conditions the practical feasibility and effectiveness of the strategy through a year-long full-scale investigation. Over a period of 5 months, alum dosing at ∼190 kg Al/day to the bioreactor in a full-scale WWTP was stopped, while FeCl2 dosing at ∼160 kg Fe/day in the upstream network was commenced. Extensive sampling campaigns were conducted over the baseline, trial and recovery periods to investigate sulfide control in sewers and its flow-on effects on phosphate in WWTP effluent, H2S in biogas, as well as on the WWTP effluent hypochlorite disinfection process. A plant-wide mass balance analysis showed that the Fe2+ dosed upstream was effectively used for P removal in the activated sludge tanks, with an effluent phosphate concentration comparable to that in the baseline period (i.e. with alum dosing to the bioreactor). Simultaneously, hydrogen sulfide concentration in biogas decreased ∼43%, from 495 ± 10 to 283 ± 4 ppm. No effects on biological nitrogen removal and disinfection processes were observed. Both effluent phosphate and H2S in biogas increased in the recovery period, when in-sewer dosing of FeCl2 was stopped. X-ray diffraction failed to reveal the presence of vivianite in the digested sludge, providing strong evidence that thermal hydrolysis prevented the formation of vivianite during anaerobic digestion. The latter limits the potential for selective recovery of Fe and P through magnetic separation. Overall, our study clearly demonstrates the multiple beneficial reuse of iron in a real urban wastewater system and urges water utilities to adopt an integrated approach to coagulant use in urban water management.