Navegando por Assunto "Water supply"

Agora exibindo 1 - 15 de 15

Acesso aberto (Open Access)
Análise dos impactos da dinâmica de sólidos e de nutrientes na qualidade da água de ambiente lêntico utilizado no abastecimento de comunidades amazônicas
(Universidade Federal do Pará, 2012-08) SARAIVA, André Luis de Lima; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
The springs of Utinga, formed by the Bolonha and Água Preta lakes, are contained in an Área de Proteção Ambiental - APA and are used by the Companhia de Saneamento do Pará - COSANPA, to supply the population of the Região Metropolitana de Belém - RMB. These springs are formed by Guamá River, where water is captured and sent to the Água Preta lake by pumping, which in an artificial channel with gravity flow, feeds the Bolonha lake, and since it is pumped to the Estação de Tratamento de Água - ETA. The main problems of pollution / contamination of water sources appeared to advancing urban disordered, giving rise to the improper release of sewage and solid waste from neighborhoods, slums and housing estates close to the main springs. The objective of this study was to use tools to support monitoring and knowledge of water quality in the Água Preta lake, to prevent and / or correct degradation processes. These tools are multivariate analysis of abiotic parameters and chlorophyll a, nutrient balance and hydrodynamic modeling aiming to observe the dispersion of sediment transport. Samples were collected in surface water at three points strategically chosen to assess the anthropogenic influence in the Água Preta lake and sediments that are suspended matter carried into the lake. The sampling points were georeferenced using GPS (GARMIN Model) and the sampling of surface water were performed with the Van Dorn bottle 2.5 L and transported to the Laboratório de Química Ambiental (LQA), located at the Universidade Federal Rural da Amazônia, for further analysis. Samples were collected during the months of March, May, June, August, September and October in 2010, coinciding with periods of higher and lower rainfall. The data of abiotic parameters and chlorophyll a were analyzed by methods of descriptive statistics and principal component analysis. Analyses were also carried out analysis of the mass balance of water and nutrients and adopted the use of hydrodynamic model of the modeling program SisBAHIA (Sistema Base de Hidrodinâmica Ambiental), aimed to mimic the hydrodynamic conditions of the Água Preta lake during a year. Through these simulations were generated maps of surface currents to observe the different patterns of movement, since the use of models have played an important role in planning and development of alternative scenarios that include the proper diagnosis of the water systems in its structure, process and dynamics. The parameters studied showed variations during periods of lower and higher rainfall, higher contribution being found in point 2 in respect of turbidity, color, DO, nitrate, NT, chlorophyll a and suspended solids were found larger contribution in points 2. The other parameters (N -ammonia, BOD and PT) had contribution in points 1 and 3, indicating a source of organic pollution, due to domestic sewage, since there are nearby dumping of sewage. In the mass balance was found that both the PT and NID were influenced by the load of water river Guamá during the lower rainfall. While with high rainfall total phosphorus load was higher due to higher contribution from dewatering of sewage released into the reservoir. The retention time for the PT was 180 days and 536 days was NID. Through this balance could quantify the entry, retention and export of nutrients as well as to evaluate the potential for eutrophication of reservoirs. In the hydrodynamic model showed that the distribution of the module speed was identical for each month of the year, regardless of wind direction, with the riparian vegetation around that water environment this important role in reducing the speed modular surface of the water. However near the output channel of pond water was observed a change of speed 0.32 m /s in the rainy season and 0.28 m / s during the dry period that can be related to the precipitation. Furthermore, the input of water in the tank forms a vortex tending to sedimentation process, a fact observed in the bathymetry. The sedimentation at this point be given especially in periods with lower precipitation, because COSANPA increases the flow of water intake to maintain the level of the reservoir to supply the Região Metropolitana de Belém, providing the greatest contribution of suspended sediment, a fact observed with the parameters of turbidity, color and suspended solids, which have higher concentrations at this point and a decrease as they move away to step 3 (water outlet channel for the connection). These tools are of great importance for maintenance of the spring, since they will allow diagnosing the lake capacity tends of retain and remove nutrients as well as the process of the hydrodynamic circulation allowing check sites that can have a major and minor deposition of materials suspended in water column. Through this study will provide data that subsidizes the competent authorities the future and help in the conservation of other sources used to supply water to cities.
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)
Avaliação da presença de antiflamatórios não esteroides no sistema de abastecimento de água Bolonha Belém/PA
(Universidade Federal do Pará, 2022-04-12) RIBEIRO, Caroline Mascarenhas; TEIXEIRA, Luiza Carla Girard Mendes; http://lattes.cnpq.br/9773700229115395; https://orcid.org/0000-0002-0204-6825
The present study aimed to investigate the occurrence of non-steroidal antiinflammatory drugs - NSAIDs in the Bolonha Complex, Belém-Pa, from water samples collected in the Bolonha Reservoir (raw water) and after the filtration and disinfection of the ETA Bolonha, in addition to verifying possible relationships between the NSAIDs in the study and the water quality parameters. The determination of NSAIDs was based on the solid phase extraction method, on GC-MS (Gas Chromatography coupled to mass spectrometry) for the identification of the compounds Ibuprofen (IBU) and Paracetamol (PAR), and LCMS/MS (Chromatography Liquid coupled to sequential mass spectrometry) to obtain Naproxen (NAP) and Diclofenac (DFC). The results obtained indicated the presence of the four drugs PAR, IBU, NAP and DFC in the Bolonha Complex. At point AB, the first three drugs, respectively, had an annual mean of 3.7 ng/L, 9.1 ng/L and 351.8 ng/L. At point AF, the same drugs obtained, in the same order, annual mean concentrations of 14 ng/L, 231.2 ng/L and 1932.2 ng/L. At point AT, only IBU and DFC were detected, with annual averages of 0.9 and 35.9 ng/L, respectively. It was found that the main step responsible for the elimination of drugs was chlorination, especially in the rainy season, equivalent to an annual removal efficiency of 100% in the cases of PAR and NAP, and 94%, referring to the IBU. In the correlations, no strong relationship was identified between the drugs detected in the raw (AB), filtered (AF) and treated (AT) water points. At Point AB, the approximation of the NAP with the pH color, apparent color, total iron, turbidity and E-coli variables stands out. At point AF, the same drug showed a correlation with the apparent color in the rainy season, however in the dry season it did not show strong correlations with any of the variables analyzed. At point AT, the DFC stood out with the approximation of the pH, turbidity and alkalinity variables. In general, the assessment of the presence of NSAIDs proved to be important for a better understanding of the issue of microcontaminants in the Amazon and, in addition, confirmed the hypothesis of the presence of NSAIDs in different parts of the ETA Bolonha, which may be related to the discharge of untreated sewage from the neighboring population
Acesso aberto (Open Access)
Avaliação de perdas de água do sistema de abastecimento de água da Cosanpa, na Região Metropolitana de Belém-PA
(Universidade Federal do Pará, 2006-03-30) VELOSO, Thomás Pinheiro; BARP, Ana Rosa Baganha; http://lattes.cnpq.br/0286183914646934
This work has as objective to analyze the water losses in the supplying system of the COSANPA that takes care of to the demand of the Metropolitan Region of Belém (RMB), emphasizing the importance that the process of formation and the urban growth of the RMB has in relation the water losses, in the measure where this process forced the COSANPA to take care of to a number each bigger time of users with improvised workmanships, taking the prevalence of the improvisation and the empiricist in the operation of this system. The research was carried through for all the area of the RMB, since it would be impossible to determine the losses index for an isolated sector, in result of the absence of sectoring of the net of water supply that makes it difficult the attainment of more necessary operational information. The methodology used for the determination of the losses index of the system of water supply of the COSANPA in the RMB, was based on the study carried through for Silva et al (1998) for the National Program of Combat to the Wastefulness Water (PNCDA) and that in 2004 it was revised by Marcka (2004). The results gotten with the determination of the losses pointers of basic and average level of complexity reflect the fragility of the COSANPA through highest losses index, that besides being related the structural problems, are aggravated by the operational deficiencies of this system. One concludes that measured as the sectoring of the net of water supply, hydrometer, update of register in cadastre, use of new technologies for detention of emptyings and frauds and the operational qualification, with the manual technician creation, are combat tools the actual and apparent losses that can change the current picture of the COSANPA.
Acesso aberto (Open Access)
Avaliação do consumo e da despesa de energia elétrica no estudo de concepção de sistema de abastecimento de água
(Universidade Federal do Pará, 2019-04-25) FERREIRA, Jorge Fernando Hungria; OLIVEIRA, Dênio Ramam Carvalho de; http://lattes.cnpq.br/1324105476558186; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
The definition of the Water Supply Systems (WSS) design is an important stage in the municipalities planning, since it has a direct impact in the implementation, operation and maintenance costs, and, as a consequence, in the economic sustainability of water supply companies. Thus, in the present research were studied alternatives of WSS design to the urban area Castanhal, considering the values of electricity energy consumption and operational cost in the period 2017-2037. The research was divided in three stages, being in the first characterized the Castanhal WSS (that uses underground water). After that, two alternatives of WSS design with raw water abstraction were analyzed and dimensioned. In the third stage, simulation was performed in the EPANET 2.0 Software to compare the consumption and cost of electric energy in the operational routines of WSS design alternatives. In the research, 14 WSS’s were identified in the Castanhal urban area, with capture in 46 shallow wells and 13 deep wells and with water treatment and reservation problems, attending only 28.36% of the urban population and 47.86% of loss index in distribution water. The WSS design alternatives were with superficial abstraction of raw water, one from Guamá river and another from Inhangapi river; with treatment and distribution of 64,293 m³/d to attend 270,935 inhabitants in 2037; and with operational routine to minimize pumping at peak time. After the dimensioning of WSS units and the simulations in the EPANET 2.0 software, 21,600,000 data were systematized, being 10,972,800 of water flow, 9,676,800 of manometric height and 950,400 of water level. With the results of the 2017 simulation, it was verified that the CE and DE values of the Guamá WSSs (0.53 kWh/m³ and 0.29 R$/m³) and Inhangapi (0.48 kWh/m³ and 0.26 R$/m³) were lower than the Actual WSS values (0.83 kWh/m³ and 0.35 R$/m³). In the results of the 2037 simulations of electricity consumption and cost, the best hydroenergetic performance of Inhangapi WSS (988,280 kWh/month and R$ 2.816.629,91/month) was verified in comparison with Guamá WSS (1,108,260 kWh/month and R$ 3.144.285,08/month), consuming at peak time 0.91% (10,112 kWh/month) in Guamá WSS and 1.01% (9,959 kWh/month) in Inhangapi WSS of total electricity consumption. Considering the present value of the accumulated electric energy cost in the project horizon, Inhangapi WSS (R$ 98.987.348,36) had savings of R$ 10.419.463,93 (9.52%) in relation to Guamá WSS (R$ 109.406.812,29), reason for the Inhangapi WSS to be defined as the best design alternative to universalization of water supply in the urban area of Castanhal in the period from 2017 to 2037.
Acesso aberto (Open Access)
Desenvolvimento de modelo de sistema de informações geográficas para avaliação da eficiência hidroenergética em sistemas de abastecimento de água
(Universidade Federal do Pará, 2015-10-29) SANTOS, Aline Christian Pimentel Almeida; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
Development of methodology for evaluating the performance of hydro-energy Water Supply Systems (WSS) using System Model of Geographical Information (GIS) to assist in decision-making in the SAAs operation. The model developed in GIS platform enables registration, systematization and the spatial distribution of hydro data in order to avoid excessive spending on electricity aggregate the volume of water available for consumption. In Stage 1 the hydro-energy parameters were identified WSSs used in current management methods and then set the data and indicators for the spatial representation in the model of the hydro-energy performance by sector and water supply unit. In the 2nd stage was developed the management model in GIS through Delphi IDE XE5 and TatukGIS platform in three phases: geographic database construction (Phase 1); Construction of GIS module (Phase 2) and construction of hydro-energy module (Phase 3). The last step (Step 3) was submitted to evaluation of the model developed functionality, which simulated the operation of the WSS Bolonha, the Metropolitan Region of Belém, Pará, Brazil, which allowed the spatial data and indicators to identify the sectors with best and hydro-energy worst performance. The color grading maps building tool was efficient, allowing quick identification of the best result of the electricity consumption index in sector 9 of the Central Zone (0.62 KWh / m³) and the worst index total loss in sector 7 of the Central Zone (54.29%). In addition to the warning signs for tool for the indicators above the target set by the user, which enabled the identification of sector 7 with the worst energy consumption index (0.85 KWh / m³). With the work it was found that the SIGHE2A model is a tool that enables and streamlines the evaluation of the hydro-Energy performance WSS, especially to facilitate problem identification and decision making.
Acesso aberto (Open Access)
Desenvolvimento e aplicação de metodologia para avaliação de desempenho hidroenergético de sistemas de abastecimento de água
(Universidade Federal do Pará, 2016-02-19) REGO, Augusto da Gama; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
This doctoral thesis aims developing a methodology and implementing it on software in order to evaluate a water supply system (WSS) hydro-energetic performance, as well as applying it on a real scale WSS. This paper was carried out in two stages: 1) modeling the hydro-energetic performance evaluation process, establishing of formulations to calculate hydro-energetic losses and implementing methodology on software; 2) applying the methodology at a real scale WSS, which required monitoring of hydraulic and electrical quantities and simulating this WSS at Epanet 2.0. The first stage results consisted at defined hydro-energetic losses and conceptualize hydro-energetic performance on the proposed methodology, which consists sequences of actions and mathematical formulation to calculate hydro-energetic losses at the WSS, as well as to evaluate WSS hydro-energetic performance and, finally, at methodology implementation in a software using Visual Basic for Applications (named as SADHE2A) and successfully tested at the WSS with synthetic data. The second stage results are related to methodology application at WSS of Guanabara (located at Ananindeua city, Pará, Brazil), using SADHE2A – versão Beta, in which were identified water global losses of 55.42% and electrical energy global losses of 8.31% (both classified as “bad” by the methodology), resulting in an economical deficit of 17,981.77 R$/month. This value is equivalent to 57.61% of electrical energy costs, since raw water pumping to the final water costumer. Finally, the methodology developed has met the research expectations to calculate the water losses and electricity consumed losses and to evaluate the hydro-energetic performance of the WSS in Brazil and world.
Acesso aberto (Open Access)
Espacialização de informações na gestão de sistemas de abastecimento de água utilizando sistema de informação geográfica
(Universidade Federal do Pará, 2010-06-16) SANTOS, Aline Christian Pimentel Almeida; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
To evaluate the spatial information in the management of Water Supply System (ATS). For this they were defined and adopted to the survey (Phase 1), being divided into data of actual losses, commercial and operating expenses. In Phase 2, the base map of study area and data used were stored and organized in a Geographic Information System (GIS) using ArcGIS 9.3 software, which built the data model for the study, and defined the topology be used for identification of specialized data, building the database and the creation of georeferenced layers. In phase 3 was calculated from water balance in the main units of SAAs studied with certain losses in raw water supply, treatment, on the reservation, and distribution. In phase four indicators were calculated to evaluate the performance of SAAs, including: coverage index, total index of actual loss, loss index in the collection, rate of loss of business, index of energy consumption in SAA, index of energy costs Electric, among others. In phase 5 was proposed to the spatial and GIS presentation of the results obtained in earlier phases. Thus, considering the data adopted, it was possible to identify the values of actual losses and performance indicators in each sector of the SAA studied, being, for example, sector 9, which presented the highest rate of total loss, reaching 59, 10%, followed by sections 4, 8 and 5. The most significant loss for the system was the loss distribution, with 9 industry to a loss of 57% loss on treatment was 3.4% in the third sector, and sectors with the highest loss of adduction weresectors 6 and 8, with 3.5%. The percentage of water unaccounted were higher in sectors 1 and 5. Sectors 1, 3, 4 and 6 are those with the highest energy consumption per volume of water produced. Therefore, the spatial data in GIS facilitated the visualization and data analysis adopted in this research.
Acesso aberto (Open Access)
Estudo das perdas de água no sistema de abastecimento e nas residências do conjunto Benjamim Sodré
(Universidade Federal do Pará, 2009-08-07) VIÉGAS, Alessandro Abadessa; MACHADO, Luiza Carla Girard Teixeira; http://lattes.cnpq.br/9773700229115395
This work presents a study of water losses in the water supply system of Benjamim Sodré Sector. The work was divided in two steps, as follows: experimental step and results step. Later, data were evaluated and the main results have focused on: characterization and evaluation of the consumers register, revenue and measured water from the down categories of the sector, as well as, the Water Supply System water flows. Besides that, it was made the calculation of some basic performance indicators, such as (index): water loss in the distribution (70,04%), water loss in the revenue (70,61%), water gross loss linear (157,96 L/m.d), connection water loss (1.446,41 L/connection.day), measurement (72,27%) and the global losses (70,93%). Also, it was possible to know the socioeconomic level of the population (30%) of the down categories R2 and R3 of the sector (176 houses), in which the results showed that about 94% of the interviewees who pay only the water bill affirmed to practice waster losses in their houses. The water quality was also analyzed. And it was verified that about 71,50% of the interviewees have considered it bad quality, which may contribute in a important way to the occurrences of Transmissible Hydric Diseases, because it was verified that 24% of the population presented problems concerning to diarrheas, worms, hepatitis A and scabies in the last years. It was made an evaluation of the water uses in the several domestic activities of the down categories R2 and R3. There is a loss of R$ 426,38 per month in the water bill of all consumers that contribute to water leaks in their homes. Finally, it is shown that for the activity of washing the dishes the consumer would have a reduction on the water bill average value of 89,28%. Additionally, to take bath: 43,66%, to wash clothes: 34,23%, to wash the sidewalk: 84,80%, and to brush their teeth 17,06%, referring the down categories R2 and R3.
Acesso aberto (Open Access)
A geografia dos serviços de abastecimento públicos e privados de água relacionados às metas de universalização dos objetivos do desenvolvimento sustentável da Amazônia brasileira (2008-2023)
(Universidade Federal do Pará, 2024-08-28) GUEDES, Michel Pacheco; BORDALO, Carlos Alexandre Leão; http://lattes.cnpq.br/1253955182585852
The present thesis aims to analyze the water supply services based on geographic science and geographic space theory, as well as using the hypothetico-deductive method as a method of approach, with bibliographic and documental research as quantitative and qualitative method assigned to the secondary database, established in the research parameters, during the period between 2008 and 2023, plus the acting process of public and private companies which provide those services in the States of Pará and Amazonas, to give a comparison analysis between those service modalities from the parameters of the Basic Sanitation National System (SNIS) and the Basic Sanitation National Plan (PLANSAB), to identify if the management while serving the urban and rural population is efficient, and if the contractual goals are capable of reaching the sustainable development goals (ODS) for 2030. As for the theoretical basis, we utilized the reflection upon UN’s international documents, via “United Nations World Water Development Report (WWDR),” together with a reading about environmental justice concepts, hydric crisis, and hydric justice. It was also considered: a debate about the actions of Globalization and Neoliberalism, and, how these phenomena, together with the local rules and laws influence in the setting of water regulation agencies as part of a privatization process of public water supply companies in the cities of Belém (PA), Manaus (AM), Barcarena (PA) and Parauapebas (PA), and how that process works in the geographic space of a fraction of the Brazilian Amazon.
Acesso aberto (Open Access)
Índice de salubridade ambiental (isa) aplicado ao municipio Belém do Estado do Pará.
(Universidade Federal do Pará, 2018-10-25) COLINA, Valentina delos Ángeles Castillo; TEIXEIRA, Luiza Carla Girard Mendes; http://lattes.cnpq.br/9773700229115395
The main objective of this study was to adapt and apply the Environmental Health Index (ISA) in the municipality of Belém, in the state of Pará, using as reference the one developed by the Planning Chamber of the State Sanitation Council (CONESAN) in the state of São Paulo, the purpose of knowing the health conditions of urban areas and providing a tool that guides the management bodies to develop the right policies, use of resources and investment in adequate infrastructures and quality services. Secondary data obtained from the databases of the SNIS, PNAD and DATASUS were used to compose the ISA in a period of five (05) years (2012-2016); the following variables were worked out: basic water supply; sanitary sewage and solid waste, which are the aspects that most impact the quality and environmental health of a region, as well as the health aspect, which in the vector control component counted the incidence of dengue, leptospirosis and schistosomiasis. socioeconomic aspect, taking into account the variables of education, income and public health. Due to the lack of some data, the adaptation of the ISA was made, with the modification in the weights of the components, granted according to their importance. The research determined that the health situation of the urban area of the municipality of Belém is considered as "Low Health", with an average for the evaluated period of 26.61/100 points, the most critical areas being sanitary sewage and solid waste, revealing that public management does not provide these services adequately, which reflects on health and living conditions, in this way the ISA/Belém application has proven to be a viable and easy to apply method to aid in urban planning, a lot of data.
Acesso aberto (Open Access)
Índices de qualidade das águas subterrâneas de abastecimento público da Ilha do Mosqueiro, município de Belém - PA
(Universidade Federal do Pará, 2015-02-09) LOPES, Raynner Menezes; SANTOS, Maria de Lourdes Souza; http://lattes.cnpq.br/1604134738302499
Acesso aberto (Open Access)
Insegurança hídrica: medidas adaptativas autônomas usadas pela população na cidade de Belém, Pará
(Universidade Federal do Pará, 2021-06-29) RODRIGUES, Tayná Cristiny Nunes Flexa; SZLAFSZTEIN, Cláudio Fabian; http://lattes.cnpq.br/1348005678649555; https://orcid.org/0000-0002-2855-2056
The Amazon region, where the capital of the state of Pará, Belém, is located, has a large availability of water resources and constant rainfall well distributed throughout the year. However, there are frequent occurrences of interruptions in the water supply. Part of the population has no access to water in their homes or the supply is irregular, despite the fact that Belém does not present meteorological or hydrological droughts. Because of the interruptions in the water supply, the population needs to seek autonomous adaptive measures, without help from the government or private institutions, to acquire water, since the aforementioned element is essential in daily life. The research aims to identify the autonomous adaptive measures adopted by the population of Belém to reduce the inconvenience associated with the lack of water, called water insecurity. Therefore, it was analyzed in online and television newspapers - in the period from 2014 to 2020 - the frequency in which neighborhoods were notified, the causes of the interruption, the consequences, as well as the decisions taken by residents to obtain water. From the journalistic data, the water insecurity index of Belém's neighborhoods was identified, dividing them into three categories: high, medium and low. The results obtained correspond both to the production of the water insecurity index map per neighborhood, as well as the information about the time, causes and consequences arising from the interruption in water supply, besides identifying the autonomous adaptive measures used by the population, such as: buying mineral water, collecting rainwater and using well water, generally considered as reactive measures, since they occur either at the time or after the lack of water. Thus, we highlight the need for improvements in the infrastructure of the water supply system, to obtain a regular and quality supply, because water is everyone's right and essential for the well-being of the population.
Acesso aberto (Open Access)
Investigação da condição trófica do reservatório de abastecimento de água Bolonha
(Universidade Federal do Pará, 2018-07-04) OLIVEIRA, Izabelle Ferreira de; TEIXEIRA, Luiza Carla Girard Mendes; http://lattes.cnpq.br/9773700229115395
This study focused on the monitoring of water in the Bolonha reservoir, with a focus on obtaining the Trophic State Index (IET) during the rainy and less rainy period of the year 2016. The site is located on the grounds of the Utinga State Park (PEUT), which is located at Avenida João Paulo II, s / n - Curió Utinga, in the municipality of Belém-PA. The reservoir has an elongated shape, approximately 577,127 m² of the area and 1,954,000 cubic meters of water volume; its maximum depth is around 7.64 m. The objective of this research was to evaluate the IET of the Bolonha reservoir from the quantification of the total phosphorus and transparency variables and the application of descriptive, analytical and multivariate statistics, and it was possible to observe the distinct variations in the analysis periods. The methodology of the work consisted in the accomplishment of composite and straightforward field collections, to a point, located at the entrance of the ETA Bolonha capture, before the grating. When a seasonal comparison between less rainy and rainier periods was carried out, using the Mann Whitney hypothesis tests, it was possible to observe that pH, alkalinity, accurate color, total phosphorus and dissolved oxygen did not show a significant difference between the analyzed periods. The other variables as visible color, total suspended solids, turbidity, and IET, presented substantial differences between rainier and less rainy periods. The presence of phosphorus is evident in both periods. The Mann Whitney test revealed that there was a significant difference of the phosphorus fractions between wetter and less rainy periods, through the ρ values. The test showed that the phosphorus fractions analyzed presented significant differences (p <0.05) lower than the significance level of 5%. Through the analysis of the main component for phosphorus fractionation, it was possible to observe the formation of two distinct elements for each period (rainy and less rainy), which together explained 93% and 92.6% of the variability of the data. The IET was calculated for Bolonha, which allowed to classify the Bolonha reservoir as a eutrophic environment, both in the rainy season and in the less wet period.
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.