Dissertações em Engenharia Sanitária e Ambiental (Mestrado Profissional) - PPGESA/ITEC

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/16531

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Acesso aberto (Open Access)
Simulação do uso de bombas com velocidade variável em processos de saneamento
(Universidade Federal do Pará, 2025-02-07) TRINDADE, Rafael Pinheiro; SENA, Manoel José dos Santos; http://lattes.cnpq.br/2349287816857909
The pursuit of energy efficiency and sustainability in sanitation systems motivated this study, which investigated the use of variable-speed centrifugal pumps (VSCPs) in water supply, sewage systems, and urban drainage processes. The main objective was to develop a computational tool to simulate the behavior of these pumps under different operational conditions, comparing their performance with constant-speed pumps (CSPs). The methodology included mathematical modeling based on hydrodynamic similarity laws and the implementation of a C++ algorithm, validated through comparison with reference data. Twenty one scenarios were analyzed, varying the initial flow rate (Qₘ) from 200 to 800 m³/h and the flow variation amplitude (Aq) from 20 to 60 m³/h, over 24-hour periods. Results demonstrated that VSCPs are significantly more efficient at low flow rates (Qₘ ≤ 400 m³/h), achieving energy savings between 19% and 43%. However, at higher flow rates (Qₘ ≥ 500 m³/h), variable-speed operation became less advantageous, resulting in increased energy consumption (up to 154% in extreme cases). The reduction in power consumption at low-speed regimes, combined with the flexibility to adjust flow rates without throttling losses, justifies the adoption of VSCPs in systems with fluctuating demands. It was concluded that variable-speed technology is feasible for energy optimization in specific contexts, particularly in sanitation applications with moderate demand variations. The developed tool enables the analysis of real-world scenarios, supporting technical decision-making and education in sanitary and environmental engineering.
Acesso aberto (Open Access)
Avaliação de parâmetros da qualidade do ar em um município amazônico do Estado do Pará
(Universidade Federal do Pará, 2025-02-21) ROSÁRIO, Abimael Silva do; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
This study evaluated the air quality in Barcarena, Pará, Brazil, throughout 2023, focusing on monitoring particulate matter concentrations (PM2.5, PM10, and TSP) at two points (P01 and P02) near an industrial complex with activities such as ore beneficiation and shipment, agricultural fertilizer storage and bagging, and grain shipment. These points were strategically chosen due to their location within the influence zone of various enterprises and the prevailing wind direction in the region. Samples were collected using High-Volume Samplers (HVS) over 24-hour periods, following guidelines from the Air Quality Technical Guide and CONAMA Resolution No. 491/2018. Collected data underwent descriptive and multivariate statistical analysis using Minitab Statistical software to determine PM2.5, PM10, and TSP concentrations and calculate the Air Quality Index (AQI). Results showed PM2.5, PM10, and TSP concentrations complied with the intermediate standards (PI-1) of CONAMA Resolution No. 491/2018 and the stricter limits of CONAMA Resolution No. 506/2024. The AQI for PM2.5 and PM10 was classified as "N1 - Good" throughout the study period, indicating no harmful effects on human health. Additionally, the study conducted a cost analysis of air quality monitoring campaigns, considering supplies, labor, and equipment, using ORÇAFASCIO software for budget development. This study contributes to air quality monitoring in areas with intense industrial activity, providing relevant data for environmental management and public health. Furthermore, the cost analysis offers valuable insights for planning and decision-making in similar projects.
Acesso aberto (Open Access)
Modelagem de Informação da Construção (BIM) para Proposição de Alternativas de Tratamento de lixiviado
(Universidade Federal do Pará, 2025-03-19) SILVA, Rafael Haruo Yoshida; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
The treatment of municipal solid waste leachate involves significant technical complexity due to its highly diverse composition, which is concentrated in organic, inorganic, and emerging contaminants, demanding a high level of engineering design. In this context, the use of facilitating tools such as Building Information Modelling (BIM) in the conception, execution, and management phases of these projects becomes essential for optimizing the time and resources required for each related stage. This is supported by Decree-Law No. 10,306 of April 2, 2020, and Law No. 14,133 of April 1, 2021. Given the need for adapting engineering projects to BIM and the environmentally adequate management of leachate generated in sanitary landfills, this dissertation aims to apply the BIM concept in the development of leachate treatment alternatives, exploring two treatment arrangements: alternative 01 for the low-load scenario and alternative 02 for the high-load scenario. The results obtained from the application of BIM in the design of the two leachate treatment alternatives were: (I) quantities of pipes, connections, hydraulic equipment, and treatment units; (II) verification of the number of inconsistencies in the two models; and (III) graphical pieces and images of the models. The quantity of alternative 02 exceeded alternative 01 by 100% in most of the items analyzed, except for the pipes, due to the complexity of alternative 02 and the scenario it pertains to (high load), thus requiring a greater allocation of resources. Regarding the inconsistencies observed in both models, a total of 64 inconsistencies between pipes, connections, and special valves were identified and corrected. As a result of the modeling, 70 graphical pieces, 10 quantity tables, and 8 rendered 3D images were generated. Regarding the evaluation of the leachate treatment alternatives 01 and 02 through the Simple Additive Weighting (SAW) method, indices of 0,94 and 0,74 was obtained, respectively. These values highlight the difference between the two scenarios (high load and low load) and the need for greater infrastructure and more significant resources in the expansion of the leachate treatment plant for alternative 02. By comparing the treated effluent discharge standards from CONAMA 430/2011 with international standards for treated leachate discharge, it was observed that Japan, Australia, France and United States of America were the countries most similar to Brazil, presenting similar regulated parameter values of 52.63%, 42.11%, 42.11% and 42.11 respectively. However, many of these parameters have different maximum allowable values when compared to those in Brazil, emphasizing the need for the requalification of current regulations and resolutions. Considering all the results obtained in this dissertation, the application of BIM in engineering projects proves to be a promising approach for optimizing time and resources in the conception, execution, and management of projects, although still in early stages in Brazil.
Acesso aberto (Open Access)
Sistema de Informações Geográficas na análise da relação do saneamento básico com a saúde pública em áreas urbanas
(Universidade Federal do Pará, 2024-12-03) SOUZA, Arllen Augusto Gomes.; ALMEIDA, Aline Christian Pimentel; http://lattes.cnpq.br/1388841813412015; https://orcid.org/0000-0002-7421-5632
Identifies the main problems related to basic sanitation and public health in the Guamá Administrative District (DAGUA), at Belém-Pa, counting with the help of Geographic Information System (GIS). The research methodology was developed into four stages: in the first, the main basic sanitation problems in DAGUA were identified; after that, with the help of GIS point maps, the number of confirmed cases of diseases related to basic sanitation such as Dengue fever, chikungunya, Acute Diarrhoeal Diseases (DDA) (2017-2018), THE Zica virus, Leptospirosis, Yellow fever, Hepatitis, A-viruses were surveyed and spatialized from 2015 to 2022 in the database of the Belém Municipal Health Department (SESMA); in the third stage a comparison was made between the lack of basic sanitation and the public health problems in the research area, and these were spatialized using GIS choropleth maps; in the last stage, structuring and structural measures were proposed for DAGUA. The results were as follows: the need for maintenance in the treatment units and in the water networks distribution, since many are exposed and routed into drainage channels that receive fresh effluent; the scenario of a lack of service for sewage collection and treatment in all the neighborhoods belonging to DAGUA; the presence of flooding points and areas susceptible to flooding; and solid waste disposed of in irregular places, which contributes to the proliferation of rodents and diseases and instability in the periodicity of waste collection. In addition, regarding public health, it can be seen that the Guamá neighborhood is the most affected by all types of diseases, but DDA were the ones with the highest number of cases, although the information provided is only for the years 2017 and 2018. Thus, the relationship between disease indicators and sanitation conditions in the research area showed that the lack of adequate sanitation may be the cause of the increase in the number of occurrences of the diseases analyzed. In order to improve the relationship between sanitation and public health, this research proposed structuring measures and structural measures. Therefore, the development of this research made it possible, through GIS, to analyze the relationship between basic sanitation and public health in DAGUA, in order to better serve the social body and provide a better quality of life.
Acesso aberto (Open Access)
Práticas e ações de sustentabilidade com intervenção pedagógica
(Universidade Federal do Pará, 2025-02-06) MIRANDA, Françoise Helouise Costa de; PENNER, Giovanni Chaves; http://lattes.cnpq.br/3110276957027781
There is a worldwide concern regarding climate change, and in order to find a response to thisthreat, several agreements and conferences are being held around the world. The motivation for the project comes from the difficulty that basic education faces in planning sustainable practices and actions in the school environment. In view of this, we thought of providing solutions so that the proposals could be developed by a public elementary school in the city of Belém-Pará, given that this educational system plays an important role in the dissemination of information and innovation. Therefore, we decided to work in 3 stages within the project developed by the school entitled “Schools of Knowledge and Actions for Sustainability”, to recognize the area, analyze the project proposed by the school, search for existing projects, and establish technical partnerships with the objective of raising awareness in the school community about the responsible use of natural resources, such as reducing energy consumption, water consumption, and creating healthier environments for the school community and consequently for the surrounding population. Based on the visits, meetings held with teachers, school management and observation of the infrastructure characteristics, sustainable actions and practices of the aforementioned project were initiated, as well as the use and adaptations of the methodology of the Environmental Agenda in Public Administration - A3P made available by the Ministry of the Environment were proposed, which did not happen because the school management was unable to involve and encourage teachers in the activities that were carried out with the students, resulting in the interruption of the actions.
Acesso aberto (Open Access)
Recarga do aquífero livre na Universidade Federal do Pará, campus Belém
(Universidade Federal do Pará, 2023-02-06) SILVA, Salim Rodrigues da; PENNER, Giovanni Chaves; http://lattes.cnpq.br/3110276957027781
In Brazil urban supply, rural supply, industry, mining, thermoelectric, animal and irrigation consume approximately 61.46 billion m³/year of fresh water, with the greatest demand being urban supply (25%). In Belém, groundwater collection to feed the Water Supply System has been increasing. Despite this, the low quality of its distribution ends up stimulating the capitation of water without any criteria, contributing to the overexploitation of aquifers. In the field of scientific research, in the State of Pará, the amount of work to estimate underground recharge is incipient, making the development of new research urgent. Therefore, this work aims to estimate the recharge of the aquifer free of primary porosity located in an alluvial deposit, underlying the Federal University of Pará (UFPA), Belém campus. The recharge estimate was carried out using the Water-Table Fluctuation (WTF) method in 8 monitoring wells distributed in the so-called health and professional sectors of the Federal University of Pará. The mean water level variation in the study area was between 0.76 and 2.27 m (discrete and continuous monitoring). A specific yield (Sy) was determined through a pumping test, which provided data that were analyzed in the AQTESOLV Demo software, using the Tartakovsky-Neuman analytical solution. The Sy result of the pumping test was 0.1 (10%). The estimated recharge for discrete monitoring was between 101.40 mm and 371.60 mm (year 2020), between 75.50 mm and 552.60 mm (year 2021) and between 19.50 mm and 140.50 mm (year 2022), with an average of 583.51 mm, which represents 6.93% of the precipitation in the study period (8,419.14 mm) and for continuous monitoring, it was between 40.00 mm and 87.90 mm (year 2020) and between 19.30 mm and 218.80 mm (year 2021), with an average of 539.45 mm, which corresponds to 38.86% of the precipitation of the study period (1,338.10 mm). Thus, based on discrete and continuous monitoring data, the average recharge for the study area corresponds to approximately 22.89% of the total precipitation. The results referring to the correlation between water table fluctuation and rainfall showed an average determination coefficient of 22.49%. Both the recharge and the correlation proved to be consistent with the other surveys carried out in Brazil. As explained above, continuous assessment of aquifer recharge is recommended for the sustainable use of groundwater resources, in order to ensure their multiple uses.
Acesso aberto (Open Access)
Estudo gravimétrico de resíduos dos grandes geradores supermercadista; atacadista, hotelaria e restaurantes na região metropolitana de Belém - PA
(Universidade Federal do Pará, 2023-02-27) FRANÇA NETO, Raymundo da Costa; NORAT, Maria de Valdivia Costa; http://lattes.cnpq.br/1628995172582591
This study addresses physical characteristics of gravimetry, presenting as a context the characteristic condition of waste for better use of recyclable waste for recycling, with organic solid waste digestible through technologies that can be better used. The main objective of the study is to identify, through gravimetric data, the possible technical relevance for the waste generated by large generators in the metropolitan region of Belém, for a better use of waste. In this way, it will have a contribution to increase the useful life of the sanitary landfill located in the area under study. The importance of gravimetric data for the survival of sanitary landfills is because it is an important tool in terms of the Solid Waste Management Plan, allowing the analysis of quantitative and qualitative data from the gravimetry of large generators, allowing to present the difficulties and possibilities to implement a disposal system with better use of waste and to identify which are the major generators of solid waste in the current situation in the Metropolitan Region of Belém. The development of this research was divided by primary and secondary data; data analysis for the purpose of results regarding the study of gravimetry, descriptive statistics were analyzed; gravimetric analysis by graph; analysis of the gravimetric composition of RS through boxplot graphs; KruskallWallis test – GG; and literary study for foundation. The results of the survey show that the amount of digestible organic matter, as the highest power in the waste, is around 80.9%, confirming that the organic waste from large generators is completely avoidable for disposal in landfills, and should be directed to treatments with technology sustainable production of energy or compounds, leading to relevant reflections on waste to propose composting techniques, generating waste inputs for agriculture.
Acesso aberto (Open Access)
Elaboração de banco de dados das ETE’s de esgoto sanitário na região metropolitana de Belém para fins de planejamento e operação envolvendo fase líquida, sólida e gasosa
(Universidade Federal do Pará, 2022-12-29) ASSUNÇÃO, Maurilo André da Cunha; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
The present technical work consisted in the elaboration of a data bank of the wastewater treatment plant (WWTP's) of the metropolitan region of Belém (RMB) for planning and operation purposes involving the liquid, solid and gaseous phases, for the removal of carbonaceous matter. Such a study covers only the municipalities of Ananindeua, Belém and Marituba, which in 2019 have sanitary sewage systems (SES) of the centralized (SES-C33.35%) and decentralized (SES-D5.45%) types involving 23 WWTP's and whose experimental stages of this work are: 1) photographic record of the area occupied by the ETE's; 2) systematization of the basic information of the WWTP's; 3) quantification of the generation of solid by-product of the preliminary treatment; 4) balance of organic loads in UASB reactors; 5) quantification of production and sanitation of sludge in UASB reactors; 6) Potential quantification of electric power generation (EE) and methane emission from UASB reactors. Likewise, among the main results obtained in this work, it was obtained that the spatial distribution was 5.0 WWTP's (21.74%) in Ananindeua, 17 WWTP's (73.91%) in Belém, and 1.0 WWTP's (4, 35%) in Marituba, which is treating the project's average volume of 1,089 L/s (PE of 765,783 inhabitants) will generate in preliminary treatment about 840.17 kgSSG/d, 3548.2 kgareia/d and 29.53 kgscuma / day, and that when the UASB retors have an average efficiency of 65% and will operate with a total organic load of 4,193 kgCOD/d, they will produce 572.8 kgsludge/d with the potential to sanitize 3,062 kgbiosolids/d by alcaline stabilization, tending to this situation of treatment to the generation of available chemical energy and methane emission two UASB reactors, respectively, of 584.33 kWh/d of EQD and 387.67 TCO2/d through the normalized production of total methane of 59 Nm3 /d PNCH4 , being verified that the WWTP's of SESC in comparison with the WWTP's of SES-D are are the ones with the greatest possibility of using this energy as a source of heat.
Acesso aberto (Open Access)
Prestação dos serviços públicos de limpeza urbana e manejo de resíduos sólidos e drenagem e manejo das águas pluviais urbanas: proposta de atos normativos
(Universidade Federal do Pará, 2022-10-07) ANDRADE, Marcello Ádamis; TAVARES, Antonio de Noronha; http://lattes.cnpq.br/5212600085310483; BITTENCOURT, Germana Menescal; http://lattes.cnpq.br/2304409840440309
Federal Law n° 11.445/2007 defined important aspects regarding the regulation of the provision of public sanitation services, including regulation and inspection. In this sense, the regulatory agencies, in compliance with the ANA guidelines, must issue rules relating to the technical dimensions of the provision of public sanitation services. The objective of the present work is to propose technical resolutions for the establishment of quality standards for the provision of public services of urban cleaning and solid waste management and drainage and management of urban rainwater in the city of Belém. To this end, a review of the technical literature was carried out on the subject, survey of existing resolutions in other regulatory agencies, and analysis of the pertinent legislation in force and analysis of the relevant legislation in force for the proposition of normative acts. When analyzing the existing resolutions, it is possible to verify that not all regulatory agencies that claim to regulate a certain axis of basic sanitation have a large normative framework on them. For the construction of the resolutions, it was necessary, in addition to the expertise of the other agencies that already have normative acts in the same direction, to make use of a legal framework, with the intention of guaranteeing the legality of the requirements adopted by the regulatory agency with the service providers. The proposed rules were prepared in specific chapters for each service to be regulated in the general rule for the provision of services and with an indication of those who should have their own rules. It is concluded that the complete regulation of sanitation is a challenge imposed on regulatory agencies, few regulatory entities have the legal instruments of regulation, however, these resources are indispensable since there is a need for a legal basis that supports regulation.
Acesso aberto (Open Access)
Determinação de custo de referência para elaboração de projetos e obras de rede coletora de esgoto sanitário
(Universidade Federal do Pará, 2023-01-26) COSTA, Magaly Santos Pinheiro; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
With the unavailability of financial resources and the high cost of implementing conventional sanitary sewage systems of the absolute separator type, regions with disorderly occupation and, often, subject to unfavorable topographical situations, end up not being contemplated with basic sanitary sewage services. Complementarily, this issue is accentuated by the lack of local references regarding the costs of implementing sanitary sewage collection networks in Pará, as well as parameters for the conception and elaboration of projects in the state context. In this sense, it is necessary that the typology of the sewage network to be implemented in each location be carefully planned, bearing in mind the particularities of each area, as well as the technical criteria to be adopted in the project. Considering the problem addressed, the objective of the present research was to establish values, expressed in R$/m of COSANPA's sanitary sewage collection network project, for analysis and identification of the budget worksheet items referring to the collection network and household connections, being updated the costs in the spreadsheet for the base date October 2022. In the first stage, the projects and works of the sewage collection network were surveyed in the COSANPA and SEDOP database, from this survey, the projects were selected for the preparation of the Technical Sheet, containing the main information on the sanitary sewage system. In the second stage, from the budgets of each project, the construction values practiced in projects and works of sanitary sewage collection network under the management of COSANPA and SEDOP were identified, then the budgets were analyzed and the values for the same were updated. base date (October 2022), using the National Civil Construction Index – INCC of the Getúlio Vargas Foundation – FGV. In the third stage, the values of the sewage collection network of each project were compared. In the fourth stage, a range of values for the construction of a sewage collection network was presented, expressed in R$/meter of network. This range of costs will make it possible to determine a regional reference indicator regarding the implementation cost per meter of the sanitary sewage collection network, allowing its application in studies, reports and regional projects for the collection network; contributing with Specialized Consultancies, with Higher Education Institutions and with the Public Power, with actions that culminate in the increase of sewage coverage in the Metropolitan Region of Belém.
Acesso aberto (Open Access)
Avaliação da perda de arrecadação pela não prestação do serviço de abastecimento público de água em edifícios residenciais
(Universidade Federal do Pará, 2022-10-26) RODRIGUES, Liane Cristina Chagas; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
The service provider asks for billing when the residential building uses its own water supply system. Thus, the objective of the work is to quantify the revenue losses (R$) that the Pará Sanitation Company (COSANPA) suffers for not supplying the 24 residential buildings located in the area in the third sector, located in the municipality of Belém in the State of Pará. A document consultation was carried out on the volumes of water consumed and billed in 25 residential buildings with water supply from the Pará Sanitation Company (COSANPA) to then estimate the values (volume and possible billing in reais) in residential buildings that use own source of water supply in the area of Cosanpa’s third water supply sector. The data collection source was entirely from the integrated sanitation service management system (Gsan). The Research was developed in three stages. The first stage consisted of identifying the residential buildings that use Cosanpa’s water and identifying the residential buildings that do not use Cosanpa’s water. The second stage consisted of collecting and systematizing water consumption information for the two groups of selected buildings (buildings supplied by COSANPA and buildings supplied with their own system). The third and last consisted of the comparative analysis of noncollection (monetary R$) in residential buildings not supplied with water by COSANPA, based on the premise of collection of residential buildings served by the Pará Sanitation Company (COSANPA). It was verified that the company failed to collect BRL 3,142,281.65 (three million, one hundred and forty-two thousand, two hundred and eighty-one reais and sixty-five cents) in five years, which represents 45.97% of the amount collected by the buildings supplied by the company
Acesso aberto (Open Access)
Caracterização fisico-quimica de lixiviado bruto e tratado por osmose reversa de aterro sanitário no estado do Pará
(Universidade Federal do Pará, 2023-03-27) PEREIRA, Filipe Castro; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
The effluent generated inside landfills is called leachate. The characterization of the leachate generated in landfills is important to indicate its polluting potential and enable the application of techniques for its treatment. Thus, this work aims to characterize quantitatively and qualitatively the leachate from landfills located in the state of Pará. In addition, it aims to calculate the value of IPL for this leachate in order to know its potential contamination by comparing the results with those obtained by other authors. To this end, the work was divided into three phases, where the first was about the quantitative evaluation of the leachate, the second corresponded to the qualitative evaluation and the third is related to the calculation of the polluting potential of the leachate. The quantitative characterization had as a result a strong connection of the leachate input flow with rainfall, where it was noted an increase in flow when comparing the year 2018 with the year 2019, explained by the expansion of the landfill and the increase in the capacity of theLeachate Treatment Plant (LTP). The qualitative characterization showed a leachate with high organic matter contents and high fouling potential. The results of the third phase pointed out that the IPL methodology is not suitable for Brazilian leachates, being the Index of Deactivated Landfill (IDL) a more appropriate index for it. Thus, it is concluded that the leachate from Marituba landfill has a high complexity and should go through advanced treatment processes.
Acesso aberto (Open Access)
Avaliação de cargas poluidoras de nutrientes em canais urbanos de macrodrenagem no município de Belém/PA
(Universidade Federal do Pará, 2023-02-28) BORGES, Erika Joana Nabiça; COELHO, André Luiz da Silva Salgado; http://lattes.cnpq.br/0853586340257273
With the expansion and population growth of the municipality of Belém/PA, areas with little or almost no sanitation infrastructure were developed, since as it grew, it circumvented water accidents instead of sanitizing them, resulting in large investments in works of macrodrainage currently, in peripheral areas. This work sought to evaluate the degree of pollution caused by polluting loads of nutrients in the 03 (three) macrodrainage channels, being Quintino Bocaiúva, Timbiras and Caripunas, belonging to BHEN, whose contribution flows into the main source of public supply in the municipality. For this, the work carried out the calculation of polluting loads of nutrients, analyzing NTK, ammoniacal-N, organic-N, Nitrate (NO3) and Total Phosphorus, in 5 qualitative campaigns, in addition to having carried out a bathymetric survey in 3 campaigns, considering the rainy and less rainy period. Initially, the flow results were presented, which after simulation it was verified that the highest flow is related to the Quintino channel, which was to be expected due to its greater contribution area. The correlation between nutrients and physical variables of temperature, OD and pH of the water was also verified. Thus, it was found that despite being small in most cases, there is a correlation between those mentioned. In addition, the concentration of the parameters was analyzed separately, based on the results of the laboratory analysis, in which the forms of nitrogen and phosphorus exceeded the limits recommended in the legislation, also expected due to the high contribution of the subbasins, in addition to there being no treatment efficient domestic sewage system in this area. Finally, the polluting load values were analyzed based on the relationship between flow and concentration, resulting in high values of load released into the receiving body, characterizing a scenario of extreme water degradation. Still, with this relationship it was possible to estimate the population that would be contributing to this scenario, whose numerical values were also quite high and not consistent with the reality in the area. Therefore, through these results, it is possible to affirm that they may be harmful to the waters of the canals, where a significant degradation of the quality of the waters is expected, which will follow to the Guamá river, and consequently, will reach the population that directly or indirectly have contact with these bodies of water
Acesso aberto (Open Access)
Estudo de viabilidade econômica da implantação de leito de secagem para tratamento de efluentes sanitários gerados em uma mineradora no estado do Pará
(Universidade Federal do Pará, 2022-12-28) FERREIRA, Cleyton Eduardo Costa; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
Waste management is one of the main challenges of modern society, especially when it comes to finding more sustainable and economical alternatives for the treatment and disposal of these materials. In this context, biosolids, a byproduct generated from wastewater treatment, have been identified as a possible source of nutrients and organic matter for agriculture and other sectors, thus contributing to a more circular economy. Biosolids contain a large amount of nutrients that can be used to improve soil quality and increase agricultural productivity (OLIVEIRA et al., 2018). In addition, the use of biosolids as fertilizer can reduce the need for chemical inputs, contributing to the reduction of the environmental impact associated with final disposal (RIBEIRO et al., 2015). This study was conducted in a mining company in the state of Pará, Brazil, which has eight decentralized anaerobic wastewater treatment plants. The study aimed to define the treatment route for biosolids, as well as to evaluate the economic viability of implementing a drying bed for the production of biosolids to be applied in the restoration of degraded areas. It was found that 11,776 kg of total suspended solids (TSS) per year of sludge are generated, resulting in the design of a drying bed with three cells, each with 22 m², an operation cycle of 25 days, and a Surface Application Rate of 13.30 Kg TSS/m²xdia. For sanitization, CaO was chosen. The implementation cost of the drying bed was R$ 100,358.70, operational costs were R$ 2,059.62/month, and the solution via incineration was R$ 18,415.80/month. Based on the simple and discounted payback, the investment returns in approximately 7.14 and 7.19 months, respectively, and is part of the synergistic costs with the current sanitation management. The other indicators point to the investment as viable and capable of financial surplus. Therefore, the company will have financial and environmental gains with the implementation of the project.
Acesso aberto (Open Access)
Estudo comparativo entre metodologias de dimensionamento de sistemas prediais de água fria de um hospital localizado em Belém do Pará, de acordo com a atualização da nbr 5626
(Universidade Federal do Pará, 2023-03-30) MACHADO, Cláudia Letícia da Silva; SANTOS, Aline Christian Pimentel Almeida; http://lattes.cnpq.br/1388841813412015; ADAM, Katiucia Nascimento; http://lattes.cnpq.br/2498018628901734
The hydraulic installations must be designed and built in such a way as to ensure the uninterrupted supply of water, in sufficient quantity, at adequate pressures and speeds, under appropriate conditions for the development of human activities and for human consumption, ensuring comfort to users including the reduction of noise levels in pipes. These conditions are met from the technical standards that determine hydraulic parameters and calculation methods to be followed by designers, who take into account a theoretical study of pipe and connection sizing that, in practice, due to water consumption and practical operation, ended up causing the adequacy of manufacturers of sanitary appliances, development of more efficient technologies. Through laboratory tests, many manufacturers began to provide essential technical information for the development of more assertive projects, such as the actual water consumption of the appliances, especially the characteristic curves of flow as a function of pressure, fundamental for use in the design of water systems and for the development of new methods, in order to consider the variable flow in the points of consumption. Tied to this new scenario the updating of technical standards among them the NBR 5626, which expands the possibility of using specific data of manufacturers and sizing of facilities. In this context, the present work proposed a comparative study of the sizing methodologies of the hydraulic installations of cold water installed in a hospital located in Belém do Pará, according to the update of NBR 5626/2020 building systems of cold water and hot water - design, execution, operation and maintenance that cancels and replaces NBR 5626/1998 cold water building facilities. Thus, the research was divided into step (1) bibliographic research, presentation of the study area and data collection, step (2) dimensioning of the cold water system considering nbr 5626/98, step (3): sizing of the cold water system considering NBR 5626/20 and step (4) analysis of the results. In general, with this case study, a practical approach was obtained to apply the updated parameters of the NBR 5626/2020 regulation in relation to NBR 5626/1998, presenting flow values, determined by the specific information of each sanitary piece, where we had an increase in this parameter, as to the diameter we had in most of the preumadas the decrease directly interfering in the load loss that increased and how much available pressure a decrease.
Acesso aberto (Open Access)
Proposta de distribuição de hidrantes urbanos no município de Ananindeua-PA utilizando Sistemas de Informações Geográficas
(Universidade Federal do Pará, 2023-01-27) FERNANDES NETO, Antenor Amaral; ADAM, Katiúcia Nascimento; http://lattes.cnpq.br/2498018628901734; ALMEIDA, Aline Christian Pimentel; http://lattes.cnpq.br/1388841813412015; https://orcid.org/0000-0002-7421-5632
This work analyzed the physical conditions and the distribution of urban fire hydrants in the city of Ananindeua-PA, using GIS tools and how this distribution impacts the fire protection of the municipality. For this, four steps were carried out: In the first stage, the rules and norms in force on urban fire hydrants where surveyed. In the second stage, data were collected from existing hydrants (quantification, verification of installation and maintenance conditions, use and distribution of hydrants), through field visits and collection of secondary data from competent authorities (COSANPA and Firefighters). Subsequently, an analysis of the installation and maintenance conditions of urban fire hydrants was carried out using geoprocessing techniques. Finally, after analyzing the data, a proposal was drawn up for the redistribution of this equipment in the urban area of Ananindeua-PA (technical report), with the aim of optimizing the use and making fire fighting more effective. Thus, it was possible to verify the divergence between the current norms, as well as the inadequate distribution of urban hydrants and their poor maintenance, in addition to showing lower flow rates than required by the norms.
Acesso aberto (Open Access)
Produção de biogás e energia elétrica a partir do efluente líquido da palma de óleo (Elaeis guineensis) no estado do Pará.
(Universidade Federal do Pará, 2022-12-27) CARDOSO, Ana Rosa Bezerra; ALVES, Rui Guilherme Cavaleiro de Macêdo; http://lattes.cnpq.br/1902384822911246
In this work, we intend to demonstrate the importance of a biogas production system in order to optimize the use of liquid residues arising from the oil palm production process, a residue called POME (Palm oil mill effluent), which contains a high concentration of organic matter, being a potential source of biogas production for the generation of electricity and biofuel. In this context, the objective is to evaluate the process of producing biogas and electricity through a covered anaerobic lagoon based on the POME implemented by an industry in the State of Pará. For this, information was gathered about the industrial process, the type of effluent treatment that is used and its components, and the process of transforming liquid waste into a new product. Visits were carried out in the industry to learn about the facilities, monitor the operation of the system and the operation of the equipment used to capture biogas and convert it into electricity. Data regarding the COD, pH and temperature parameters that are used for the operational control carried out in the lagoon were made available. The system started operating in February/2021, but the data referred to the period from May/2021 to April/2022. The average values obtained in the operation of the system referring to the pH was 7.43 and the temperature of 38.30 °C with a VOC of 24.73 kgCOD/m³.day. The anaerobic lagoon showed a COD removal efficiency of approximately 91% and an average production of 139.04 m3 /day of methane. The methane produced from the industry's POME generated an average of 28.01 MWh of electricity in the aforementioned period, which were used to power the industrial plant. In view of the results analyzed, the viability of using the liquid effluent from the processing of the oil palm fruit for the generation of biogas and electricity is confirmed, thus contributing to the improvement of the quality of the final effluent.
Acesso aberto (Open Access)
Laboratório virtual de bombas hidráulicas para aprendizado de hidráulica aplicada ao saneamento
(Universidade Federal do Pará, 2024-05-07) SANTOS, Yara Cristiane Fonseca; SENA, Manoel José dos Santos; http://lattes.cnpq.br/2349287816857909
The curves that characterize the behavior of a pumping system are usually studied in physical laboratories. However, there are limitations regarding the parameters that are usually varied in such conditions. The use of virtual laboratories can expand the experiments conducted in physical laboratories in such a way that a better understanding of the effect of varying the parameters can occur. Examples of such parameters include length, pipe diameter, pipe material roughness, fluid viscosity, and the height difference between the lower and upper tanks. In this paper, the development of a responsive design virtual laboratory for a pumping system is described. This virtual laboratory can be used on PC computers, tablets, or smartphones due to its responsive graphical user interface. The equations used to simulate the behavior of the laboratory are the conservation equations, considering the equality between the manometric head provided by the pump and the pressure drop observed in the system. To account for pressure drops, the Darcy-Weisbach equations are used, with friction coefficients defined from the Colebrooke-White equations. The conservation equations are then solved numerically using the bisection method. The results are displayed graphically in the virtual laboratory. These results are the pump head, pressure losses, efficiency and driving power. All of them are as a function of the flow rate. The operating point is calculated and presented graphically. The variables are changed using sliders. The laboratory was tested with students of a Civil Engineering course. The results of a survey conducted with these students showed the effectiveness of the laboratory in promoting a greater understanding of the concepts studied. Most of the survey participants stated that they had greater knowledge of the pump curve, the system pressure loss curve, the pump efficiency curve and the pump driving power curve. This showed the usefulness of plotting these quantities as a function of the flow rate. A greater understanding of the influence of parameter variations was also perceived by the analysis of the survey results. In addition, the tests indicate directions for future developments
Acesso aberto (Open Access)
Proposta de manual técnico para elaboração de um programa de monitoramento da qualidade da água subterrânea no estado do Pará
(Universidade Federal do Pará, 2024-02-09) SIQUEIRA, Maria Roberta Cavalcante de; PENNER, Giovanni Chaves; http://lattes.cnpq.br/3110276957027781; https://orcid.org/0000-0003-0335-5352
Monitoring groundwater is an extremely important activity for diagnosing and controlling potentially polluting activities. Applied to environmental management and control, whether due to a requirement from the regulatory body, through environmental license conditions, it represents a major environmental liability for companies that are not meeting the requirements demanded by these respective regulatory bodies. Activities that can cause changes in groundwater require periodic monitoring to ensure the maintenance of environmental quality, as they are standardized and require standards, manuals and regulations. This respective manual was conducted based on standards from the Brazilian Association of Technical Standards ABNT), international legislation, monitoring manuals and solutions on water quality applicable to the topic, as well as collections made up of monitoring wells within the Campus of the Federal University of Pará, in Belém (experimental area of this research). To this end, disposable Bailer samplers and measurements were used using the low flow system, aiming to define clear guidelines and rules for carrying out the activities involved in the process, as well as commenting on other devices that could be used for collection. of groundwater samples. At the end, a manual of good practices was proposed as a way of ordering and guiding the groundwater monitoring process. It is expected that this proposed technical manual will serve as a reference for groundwater collection, as given the concern within the State of Pará, it is extremely important to organize effective action and forward solutions to this environmental problem. Additionally, this manual is intended to be a purposeful document, and can be useful in environmental monitoring in different polluting activities.
Acesso aberto (Open Access)
Monitoramento da qualidade da água de consumo humano em Belém-PA/: uso de dashboards visando aprimorar a gestão municipal
(Universidade Federal do Pará, 2024-06-27) NASCIMENTO JÚNIOR, Lourival Maurício; COELHO, André Luiz da Silva Salgado; http://lattes.cnpq.br/0853586340257273
The present study aims to monitor water for human consumption in the Municipality of Belém/PA through dashboards, which are visual panels where relevant information is condensed and presented to facilitate data analysis. The idea of the work is to develop a strategic tool for monitoring the quality of water for human consumption for the Municipality of Belém/PA that is dynamic and interactive, considering data from the Water Quality Surveillance Information System (SISAGUA). The methodology used consisted of 3 distinct stages. In stage 1, monitoring data were extracted from the SISAGUA system, referring to the variables residual free chlorine, turbidity, total coliforms and Escherichia Coli, registered between the years 2018 and 2023. In stage 2, with the data extracted in Excel spreadsheet format, The physical-chemical index (IFQ) for turbidity and free residual chlorine was determined, with the aim of evaluating whether the water meets the maximum permitted values. For the variables Total Coliforms and Escherichia Coli, whose laboratory results are presence or absence, the bacteriological index (BI) was calculated to assess whether the water meets the bacteriological standard for potability. In stage 3, dashboards were created to assist in monitoring water for human consumption, using the Microsoft Excel program, through which it is possible to observe and make comparisons with current potability criteria. For the water supply system (SAA), 3,518 samples were extracted, and for collective alternative solutions (SAC), 785 samples were extracted. The designation of these forms of supply as SAA or SAC is the responsibility of Environmental Surveillance when entering the data into SISAGUA, according to the criteria established in the potability ordinance. The results at the station outlet showed that the IFQ for free residual chlorine ranged from 34.02% to 66.67%, while in the distribution network it ranged from 18.40% to 35.60%, both below the ideal IFQ of 100%. The results at the station outlet showed that the IFQ for turbidity ranged from 82.86% to 100%, while in the distribution network it ranged from 92.96% to 95.06%. The results at the station exit showed that the BI for Escherichia coli ranged from 86.05% to 96.67%, while in the distribution network it ranged from 86.10% to 90.54%, values below the ideal BI of 100%. There were worrying non conformities in relation to residual free chlorine and Escherichia coli, as these are important indicators of the sanitary quality of the water. This demonstrates the advantage of using a dashboard compared to traditional reports. The use of this tool by the Health and Environmental Surveillance of the Municipality of Belém/PA can positively contribute as an instrument to support municipal management, facilitating decision-making and monitoring water for human consumption.