Navegando por Assunto "Tratamento de esgoto"

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Acesso aberto (Open Access)
O balanço de massa das unidades componentes de uma estação de tratamento de esgoto e a utilização da estatística multivariada como ferramenta de verificação do comportamento físico, químico, bacteriólogico e de metais no esgoto bruto e tratado. Estudo de caso: estação de tratamento de esgoto doméstico – ETE Sideral - Belém - PA
(Universidade Federal do Pará, 2013-10-04) FARIAS, Flavia da Silva; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
The mass balance of the component units of a wastewater sewage treatment and use of multivariate statistics as a tool for verifying the behavior of raw sewage and treated, was implemented in ETE Sidereal Municipality of Belem do Para in Brazil. This study observed the entire flowchart constituent of the station that is designed to receive a maximum flow of raw sewage of 73 l / s. and now serves a flow of only 1.7 l / so that decreases in 96% of the station was designed, realizing then that today the Sidereal ETE is oversized. In verifying the constituent physical parts of the station there were not in compliance measures that have been suggested in the executive project and were perceived as "in situ". In the mass held for three types of flows: maximum (73 l / s) averaged 43 l / if current 1.7 l / s realized that the decrease in attendance constituent units of the system decreases somewhere around 97.5% the volume to which the components are designed for and found in the Sewage Treatment Station Sidereal. In the characterization of the metals present in the raw sewage treated and it was found that the Principal Component Analysis of the boron (B) (63.5%) and followed by barium (Ba) with (21.9%) justify 84.48% the coefficient of variation that determine how prevalent metal in the influent. In Effluent Boron (B) showed a coefficient of variation of 73.7% which justifies as the main component in the influent of WWTP. In the characterization of metals in the sludge was observed that with a percentage of 98.8% the Barium (Ba) is the main element found. The results obtained with principal component analysis to characterize the physic-chemical and bacteriological analyzes of raw sewage and treated ETE observed that the variable "total COD" is positively related to component BOD and negatively correlated with the Total Alkalinity . Regarding physic-chemical and bacteriological, high levels of BOD, Fecal coliform, TSS and VSS, from the releases of effluents, making present the highest concentrations of organic load remaining.
Acesso aberto (Open Access)
Distribuição e qualidade dos serviços de abastecimento de água e esgotamento sanitário na área insular do município de Belém - PA: Ilha de Caratateua
(Universidade Federal do Pará, 2012-08-31) FERREIRA, Carlos Augusto da Cruz; BORDALO, Carlos Alexandre Leão; http://lattes.cnpq.br/1253955182585852
This paper aims to discuss and analyze the conditions of service provision of water supply and sanitation on the island of Caratateua, isolated area of the city of Belém, Pará State, Brazil. It presents as an object of study to evaluation the distribution and quality of those services on that island. The study area corresponds to two neighborhoods at Caratateua island: Brasília e São João de Outeiro. The neighborhoods are adjacent, located in the western portion of the island and are part of it urban area. It boundaries were defined by the Prefeitura Municipal de Belém. Caratateua island is one of the most important islands that make up the Distrito Administrativo de Outeiro – DAOUT and became more intensely occupied after construction of the bridge Éneas Martins Pinheiro in 1986, which facilitated access, especially of the poor in the search space, particularly for housing. The island also has an intense population dynamics on weekends and school vacation, periods when the flow of people increases considerably, especially on the beaches. The time frame of the research has the year 1986 as the starting point of reference. The dynamic organization of space in the island in general, was not accompanied by public politics consistent with the process of population growth and dynamism displayed by the same, thereafter. As a result, neighborhoods Brasília and São João de Outeiro have a deficit in terms of infrastructure and equipment for collective use urban services including water supply and adequate sanitation in homes. The research was based on literature review on the topic of water in ranges global, national and regional, as well as the trajectory of health policies in Brazil and metropolitan scale. The analyzes derived from field surveys, with data collected from questionnaires to heads of families, recorded interviews and meetings in neighborhood associations, demonstrate the dissatisfaction of residents in relation to the care of sanitation services in question, especially since they need to seek alternative ways to meet their daily needs. The pursuit of these alternatives gives rise to forms of union between the locals and have let them to clarification of their rights as citizens and the power they have to claim them before the local government.
Acesso aberto (Open Access)
Uso de geotêxtil para a desidratação de lodo da ETE Vila da Barca-PA
(Universidade Federal do Pará, 2016-04-15) SOUZA, Luciana Otoni de; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
Checks the sludge dewatering performance of ETE Barca Village with use of geotextile. Sludge conditioning was done with the aid of chemical coagulant PAC (polyaluminium chloride - Polyvinyl aluminum- 10%) and the cationic flocculant polymer of the type FLONEX 4400 SH 0.1%, which allowed the formation of well-defined and larger flakes short stirring time interval approximately 9 jar test ". For the evaluation and selection of the ideal situation for dosages on conditioning were performed 25 trials with varying the concentrations of the raw sludge and polymer and PAC. Among the tests, which was stood the test 3, the second dosing with 95 mg / L and 8 mg polymer / L of PAC and concentration of sludge 24,106 mg / L. For these dosages showed a dewatering filtrate with satisfactory quality and the physical and chemical characteristics and a pie with high concentrations of ST and low moisture content. In the mass balance in the cake, it was possible to obtain the geotextile dewatering efficiency in the first 3 doses of the test results 3 with 90%, 91% and 91% showing good performance of geotextile. In the statistical analysis, the formation of two main components forming the set of all physical and chemical variables of 3 filtrates from the 3 trial demonstrated homogeneity, inter-relationship and similarity between them, because they can define with a high degree of significance the filtrate characteristics.