scholarly journals Correlação entre qualidade das águas e outorgas superficiais no trecho alto da bacia do médio rio das Velhas, Minas Gerais, Brasil / Water quality and granting of permits for water use in the middle course of Velhas river basin, Minas Gerais, Brazil

2018 ◽  
Vol 28 (55) ◽  
pp. 828-844
Author(s):  
Julia Piazi ◽  
Frederico Azevedo Lopes ◽  
Úrsula De Azevedo Ruchkys
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Water Use ◽  
Oxygen Demand ◽  
Minas Gerais ◽  
Quality Analysis ◽  
Belo Horizonte ◽  
The Right ◽  
The Relationship ◽  
Qualitative Characteristics

Dentre os instrumentos de gestão de recursos hídricos previstos pela Política Nacional de Recursos Hídricos, Lei 9433/97, a outorga de direito de uso de recursos hídricos objetiva assegurar o controle quantitativo e qualitativo dos usos da água. A outorga com objetivos de diluição de efluentes impacta diretamente nas características qualitativas do curso d'água, podendo afetar os múltiplos usos das águas e usuários. Além disso, trata-se de uma modalidade de outorga relativamente recente e pouco aplicada nas bacias hidrográficas do estado de Minas Gerais. Deste modo, esse trabalho tem por objetivo analisar a relação entre a qualidade das águas no trecho alto da bacia do médio Rio das Velhas e outorgas superficiais emitidas. A espacialização da variável da Demanda Bioquímica de Oxigênio (DBO), considerada para análise de qualidade das águas, foi feita por interpolação utilizando o método Ponderação do Inverso da Distância (IDW), sendo que, para os pontos de outorgas vigentes, utilizou-se a ferramenta densidade de Kernel. A relação da qualidade e quantidade das águas foi realizada por meio da elaboração de uma matriz de atribuição, visando a criação de diversos cenários a partir da suposição de pesos para as referidas variáveis. Os resultados demonstram que em locais com mais concessões de outorga (região metropolitana de Belo Horizonte e município de Sete Lagoas) apresentam piores níveis de qualidade das águas, demonstrando situações de exploração intensiva dos recursos hídricos e consequentemente, áreas potencias de conflitos entre usos e usuários na bacia.Palavras–chave: Gerenciamento de recursos hídricos, qualidade das águas, outorga, Rio das Velhas.Abstract Among the instruments for managing water resources provided for by the National Water Resources Policy, Law 9433/97, the granting of the right to use water resources aims at ensuring the quantitative and qualitative control of water uses. The granting of permits with effluent dilution objectives interferes more significantly in the qualitative characteristics of the watercourse, affecting water availability within sectors for various uses and users. In addition, it is a modality of granting that has not yet been applied in the hydrographic basins of the state of Minas Gerais. Thus, this work aims to analyze the relationship between water quality in the high section of the Rio das Velhas mid basin and surface allowances emitted. The spatialization of the Biochemical Oxygen Demand (BOD), considered for water quality analysis was made by interpolation, while the kernel density tool was used for the current grant points. The relation of the quality and quantity of the waters was accomplished by means of the elaboration of an attribution matrix, that helped in the creation of diverse scenarios from the supposition of weights for each one. The results show that in places with more concession concessions (metropolitan area of Belo Horizonte and municipality of Sete Lagoas) they present worse levels of water quality, demonstrating situations of intensive exploration of water resources and consequently, potential areas of conflicts between uses and users in the basin.Keywords: Management of water resources, water quality, granting of permits for water use, Rio das Velhas.

scholarly journals Status and Threats to Mugger Crocodile Crocodylus palustris Lesson, 1831 at Rani Tal, Shuklaphanta Wildlife Reserve, Nepal

2013 ◽  
Vol 13 (1) ◽  
pp. 125-131 ◽  
Author(s):  
Harish P Bhatt ◽  
Tej Bahadur Saund ◽  
Jham Bahadur Thapa
Keyword(s):  
Water Quality ◽  
Flash Flood ◽  
Oxygen Demand ◽  
Seasonal Fluctuation ◽  
Habitat Destruction ◽  
Quality Analysis ◽  
Anthropogenic Factors ◽  
Total Hardness ◽  
Chemical Contamination ◽  
Wildlife Reserve

A study was carried out for preparing baseline information on water quality, population status and threats to Mugger crocodile, Crocodylus palustris Lesson at Rani Tal, Shuklaphanta Wildlife Reserve. Water quality analysis was conducted for three seasons (summer, autumn and winter) in the year 2008 - 2009. The study has found the physico-chemical contamination in the lake. The water quality parameters (dissolved oxygen, total hardness, free carbon dioxide, biological oxygen demand and ammonia) exceeded the normal range to support the Muggers. A survey around the lake recorded four adult Mugger crocodiles (>180 cm body length) basking in sandy and muddy bank during the investigation period. The lake is under pressure from diverse anthropogenic factors. The principal threats to the Mugger crocodile include water pollution, habitat destruction, sedimentation, food shortage, egg collection and seasonal fluctuation of water level. The total area and depth of the lake is diminishing due to encroachment by Phragmites karka and flash flood during monsoon. Conservation and proper management of the lake are urgently required. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 125-131 DOI: http://dx.doi.org/10.3126/njst.v13i1.7451

scholarly journals Impacts of Leachate Percolation on Ground Water Quality: A Case Study of Dhanbad City

2015 ◽  
Vol 17 (1) ◽  
pp. 162-174 ◽  
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Oxygen Demand ◽  
Quality Analysis ◽  
Solid Waste Disposal ◽  
Ground Water Quality ◽  
Potential Health ◽  
Groundwater Samples ◽  
High Concentrations ◽  
The Impact

<div> <p>This paper presents an assessment of the impact of uncontrolled and unscientific disposal of MSW on ground water in Dhanbad city, India. In this study, ground water quality around municipal solid waste disposal sites was investigated. Ground water quality analysis was carried out on samples collected at various distances from two disposal sites. The study has revealed that the ground water quality near dumping sites does not conform to the drinking water quality standards as per IS:10500. The impacts of indiscriminate dumping activity on ground water appeared most clearly as high concentrations of total dissolved solids, electrical conductivity, chlorides, chemical oxygen demand, and sulphates. High amount of metals like Na, K, Ca, Mg, Cd, Cu, Ni, Fe, Zn and Mn has also been detected in the groundwater samples near dumping area. Leachate characterization study also reveals high potential for groundwater contamination. Presence of feacal coliform contamination in groundwater samples indicates potential health risk for individuals exposed to this water.&nbsp;</p> </div> <p>&nbsp;</p>

scholarly journals Water Use Special Features under the Water Resources Scarcity Conditions (the Ishim River as a Study Case)

2015 ◽  
pp. 4-19
Author(s):  
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Water Use ◽  
Water Consumption ◽  
Anthropogenic Impact ◽  
General Trend ◽  
Volume Reduction ◽  
Transboundary Basin ◽  
Study Case ◽  
Water Quality Deterioration

Special features of water use within the boundaries of the Ishim River transboundary basin (an area with very scanty water resources) have been analyzed. In spite of the general trend of water consumption volume reduction the water quality deterioration has been found in the basin. The degree of anthropogenic impact upon water resources have been assessed on the basis of direct and indirect indicators.

scholarly journals Usos múltiplos da água por usuários outorgados nas bacias hidrográficas dos Rios Aguapeí e Peixe

2021 ◽  
Vol 14 (4) ◽  
pp. 2172-2185
Author(s):  
Fernanda Buono da Silva ◽  
Timóteo Ramos Queiroz ◽  
Denilson Burkert ◽  
Rodrigo Lilla Manzione
Keyword(s):  
Statistical Analysis ◽  
Water Resources ◽  
Water Resources Management ◽  
Rural Areas ◽  
Descriptive Statistics ◽  
Resources Management ◽  
Multiple Uses ◽  
The Right ◽  
The Relationship ◽  
Water Uses

The growing demand for water resources can generate conflicts between different users. To this end, water resources management instruments were implemented, in particular the granting of the right to use, which prioritize the multiple and rational use of water. The work was carried out with the objective of analyzing the profile and the distribution of water uses granted in relation to socioeconomic aspects in the municipalities that make up the Hydrographic Basins Committee of the Aguapeí and Peixe Rivers (CBH-AP). Grant data from 58 municipalities with which descriptive statistics were analysed and prepared for the discussion on the scenario of the multiple uses of water granted. Subsequently, the data were given to the multiple regression statistical analysis, in which the relationship between the number of grants per municipality and its socioeconomic parameters was analyzed. The results demonstrated the grants in the municipalities that comprise an area covered by the Hydrographic Basins Committee of the Aguapeí and Peixe rivers are mainly related to the use of groundwater in rural areas. In the three municipalities (Bastos, Dracena and Tupã) concentrate 26% of the analyzed grants. The increase in MHDI and population, at the same time, stimulates the growth in the number of grants. Thus, there is a need to implement public policies that collaborate directly or indirectly to increase the regularization of water use.

scholarly journals A multibiomarker approach in rats to assess the impact of pollution on Sinos River, Southern Brazil

2010 ◽  
Vol 70 (4 suppl) ◽  
pp. 1223-1230 ◽  
Author(s):  
C. Rechenmacher ◽  
AM. Siebel ◽  
A. Goldoni ◽  
CR. Klauck ◽  
T. Sartori ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Water Quality ◽  
Dna Damage ◽  
Quality Analysis ◽  
Microbiological Analysis ◽  
Southern Brazil ◽  
Anthropogenic Contamination ◽  
Water Analyses ◽  
The Impact ◽  
The Relationship

The aim of this study was to determine the feasibility of combining water quality analysis with different biomarkers to characterise the relationship between anthropogenic contamination and biotic response in the Sinos River, southern Brazil. Wistar rats were studied using three biomarkers combined with physical, chemical and microbiological analysis to assess the effects of pollution at four sampling sites. The induction of oxidative stress was quantified by MDA levels in peripheral blood, lymphocyte DNA damage was determined using the comet assay, and histopathological changes were analysed in the liver. After sampling, animals were allowed to drink the river water during a 48 hours period. No increase in oxidative stress and DNA damage was observed. However, liver damage was observed in the animals exposed to water samples, indicating that the Sinos River is contaminated with hepatotoxic substances. Water analyses confirmed that water quality decreased downriver.

scholarly journals ANALISIS TOTAL BAKTERI COLIFORM DI SUNGAI BANJIR KANAL BARAT DAN SILANDAK, SEMARANG Analysis of Total Coliform Bacteria in Banjir Kanal Barat and Silandak Rivers, Semarang

2020 ◽  
Vol 8 (4) ◽  
pp. 309-315
Author(s):  
Dilia Puspita Asih ◽  
Churun Ain ◽  
Niniek Widyorini
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Dissolved Oxygen ◽  
Pearson Correlation ◽  
Oxygen Demand ◽  
Total Coliform ◽  
Biological Oxygen Demand ◽  
Coliform Bacteria ◽  
Survey Method ◽  
The Relationship

Sungai Banjir Kanal Barat dan Silandak merupakan sungai besar yang berada di Kota Semarang. Terdapat berbagai aktivitas di sepanjang aliran sungai tersebut, diantaranya aktivitas domestik dan industri dimana buangan limbah masuk ke dalam badan sungai sehingga menyebabkan penurunan kualitas perairan. Salah satu mikroorganisme yang terkandung dalam limbah domestik yang berperan sebagai indikator pencemaran yaitu bakteri coliform sehingga perlu dilakukan perhitungan total coliform guna mengetahui adanya pencemaran di Sungai Banjir Kanal Barat dan Silandak. Tujuan dari penelitian ini adalah untuk mengetahui kelimpahan total coliform, status mutu air berdasarkan PP Nomor 82 Tahun 2001 kelas II dan hubungan antara total coliform dengan bahan organik dan BOD (Biological Oxygen Demand) di Sungai Banjir Kanal Barat dan Silandak. Metode yang digunakan dalam penelitian ini yaitu metode survei. Pengambilan sampel terdiri dari 2 stasiun (A dan B) yang masing-masing terdapat 5 titik dan 2 kali pengulangan (P1 dan P2). Variabel utama yang dianalisis yaitu total coliform, bahan organik dan BOD, variabel pendukung yang diukur yaitu temperatur, salinitas, DO (Dissolved Oxygen ) dan pH. Berdasarkan hasil penelitian, jumlah total coliform pada stasiun A berkisar antara 240-16000 MPN/100 mldan 23-5400 MPN/100 ml pada stasiun B. Nilai total coliform pada titik A2 dan B2 pada P1 serta A5 P2telah melebihi bakumutu. Hubungan antara total coliform dengan bahan organik yaitu sangat lemah (nilaiPearson Correlation = 0,15). Hubungan antara total coliform denganBOD yaitu lemah (nilaiPearson Correlation= 0,378). Banjir Kanal Barat and Silandak Rivers are large rivers in Semarang. There are various activities along the river flow, including domestic activities and industries where waste effluents enter the river bodies causing a decrease in water quality. One of the microorganisms contained in domestic waste that as an indicator of pollution is coliform bacteria, so it is necessary to calculate the total coliform in order to find out the pollution in the Banjir Kanal Barat and Silandak Rivers. This study aims to determine abundance of total Coliform, water quality status based on PP No. 82 of 2001 class II and relationship between the total coliform with organic matter and BOD (Biological Oxygen Demand) in the Banjir Kanal Barat and Silandak Rivers. The method used in this study is survey method. Sampling consisted of 2 stations (A and B), each of which had 5  points and 2 repetitions (P1 and P2). The main variables analyzed were total coliform, organic matter and BOD, the supporting variable analiyzed were temperature, salinity, DO (Dissolved Oxygen ) and pH. Based on the results of the study, the total number of coliform at station A ranged from 240-16000 MPN/100 ml and 23-5400MPN/100 ml at station B. The total value of coliform at points A2 and B2 at P1 and A5 P2 has exceeded the standard. The relationship between total coliform and organic matter is very weak (Pearson Correlation value = 0.15). The relationship between total coliform and BOD is weak (Pearson Correlation value = 0.378). 

scholarly journals Análise coleta de esgoto de Contagem/MG: Uma realidade da situação sanitária do município entre os anos de 2010-14 / Analysis of sewage collect from Contagem/MG: A reality of the sanitary situation of the municipality between the years 2010-14

2016 ◽  
Vol 26 (1) ◽  
pp. 50
Author(s):  
André Lopes Vilaça Santos ◽  
Altino Barbosa Caldeira
Keyword(s):  
Water Quality ◽  
Environmental Impacts ◽  
Service Provider ◽  
Growth Rates ◽  
Minas Gerais ◽  
Public Water Supply ◽  
Population Growth Rates ◽  
Continuous Population ◽  
Belo Horizonte ◽  
The City

<p>O presente artigo buscou discutir a coleta de esgoto pela rede oficial da Companhia de Saneamento de Minas Gerais (COPASA), prestadora de serviço responsável por disponibilizar água tratada, além de coletar e tratar o esgoto, para só assim desaguá-lo nos cursos d’água de Contagem/MG. Contagem é um importante município que compõe a Região Metropolitana de Belo Horizonte (RMBH), que vem apresentando contínuos índices de crescimento populacional nos últimos anos, sendo que, a expansão do tecido urbano vem acontecendo também de maneira clandestina, promovendo desta forma, vários impactos ambientais no município, que possui em mais da metade do município, uma Área de Proteção Ambiental (APA), que possui no seu interior um manancial de abastecimento público, a represa de Várzea das Flores. Foram analisados, tabulados e transformados em gráficos, dados do Sistema Nacional de Informações sobre Saneamento (SNIS) entre os anos de 2010 e 2014, demonstrando que, o município de Contagem precisa de consideráveis avanços na coleta de esgoto, para que haja a redução dos impactos ambientais, e a melhoria da qualidade da água nos cursos d’água e reservatório do município.<strong></strong></p><p><strong> </strong></p><p><strong>Palavras-chave: </strong>Esgotamento Sanitário, Contagem, Impactos Ambientais, Meio Ambiente</p><p> </p><p><strong>Abstract</strong></p><p>This paper reason to discuss the sewerage by the official of the Companhia de Saneamento de Minas Gerais (COPASA), service provider responsible for providing treated water, as well as collect and treat sewage, for only then empties it in watercourses water Contagem. Contagem is an important municipality that make up the Região Metropolitana de Belo Horizonte (RMBH), which has been showing continuous population growth rates in recent years, with the expansion of the urban fabric is also happening clandestinely, thus promoting several impacts environmental in the city, which has more than half of the municipality, an Área de Proteção Ambiental (APA), which has in its interior a public water supply, the dam Várzea das Flores. Were analyzed, tabulated and graphed, data of the Sistema Nacional de Informações sobre Saneamento (SNIS) between the years 2010 and 2014, showing that the city of Contagem need considerable advances in sewerage, so there is a reduction in environmental impacts, and improving water quality in rivers and municipal dam.<strong></strong></p><p><strong> </strong></p><p><strong>Keywords: </strong>Sewerage, Contagem, Environmental impacts, Environment</p>

scholarly journals Water Quality Prediction Model Based Support Vector Machine Model for Ungauged River Catchment under Dual Scenarios

Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1231 ◽  
Author(s):  
Abobakr Saeed Abobakr Yahya ◽  
Ali Najah Ahmed ◽  
Faridah Binti Othman ◽  
Rusul Khaleel Ibrahim ◽  
Haitham Abdulmohsin Afan ◽  
...  
Keyword(s):  
Water Quality ◽  
Support Vector Machine ◽  
Oxygen Demand ◽  
Quality Analysis ◽  
Support Vector ◽  
Prediction Errors ◽  
Ungauged Catchments ◽  
Machine Model ◽  
River Catchment ◽  
Proposed Model

Water quality analysis is a crucial step in water resources management and needs to be addressed urgently to control any pollution that may adversely affect the ecosystem and to ensure the environmental standards are being met. Thus, this work is an attempt to develop an efficient model using support vector machine (SVM) to predict the water quality of Langat River Basin through the analysis of the data of six parameters of dual reservoirs that are located in the catchment. The proposed model could be considered as an effective tool for identifying the water quality status for the river catchment area. In addition, the major advantage of the proposed model is that it could be useful for ungauged catchments or those lacking enough numbers of monitoring stations for water quality parameters. These parameters, namely pH, Suspended Solids (SS), Dissolved Oxygen (DO), Ammonia Nitrogen (AN), Chemical Oxygen Demand (COD), and Biochemical Oxygen Demand (BOD) were provided by the Malaysian Department of Environment (DOE). The differences between dual scenarios 1 and 2 depend on the information from prior stations to forecast DO levels for succeeding sites (Scenario 2). This scheme has the capacity to simulate water-quality accurately, with small prediction errors. The resulting correlation coefficient has maximum values of 0.998 and 0.979 after the application of Scenario 1. The approach with Type 1 SVM regression along with 10-fold cross-validation methods worked to generate precise results. The MSE value was found to be between 0.004 and 0.681, with Scenario 1 showing a better outcome.

scholarly journals Association between age and survival in a cohort of Brazilian patients with operable breast cancer

2015 ◽  
Vol 31 (8) ◽  
pp. 1732-1742 ◽  
Author(s):  
Débora Balabram ◽  
Cassio M. Turra ◽  
Helenice Gobbi
Keyword(s):  
Breast Cancer ◽  
Cancer Survival ◽  
Minas Gerais ◽  
Breast Cancer Survival ◽  
Breast Cancer Patients ◽  
Cancer Specific Survival ◽  
Cox Models ◽  
Hazard Ratios ◽  
Belo Horizonte ◽  
The Relationship

Whether age is an independent prognostic factor in breast cancer is a matter of debate. This is a retrospective cohort study of 767 breast cancer patients, stages I-III, treated at the Hospital das Clínicas, Minas Gerais Federal University, Belo Horizonte, Minas Gerais State, Brazil, from 2001 to 2008, aiming to study the relationship between age and survival. We included variables related to patients, tumors, and types of treatment. Different sets of Cox models were used for survival analysis. Hazard ratios (HR) and 95%CI were calculated. The relationship between age and breast cancer survival did not change substantially in any of them. In the model that accounted for all variables, women aged 70 and older (HR = 1.51, 95%CI: 1.04-2.18), and 35 or younger (HR = 1.78, 95%CI: 1.05-3.01) had shorter cancer specific survival than patients aged between 36 and 69. In addition, older age, having at least one comorbidity, and being white were associated with a higher risk of dying from other causes. In conclusion, shorter breast cancer survival is expected among the youngest and oldest patients.

Sign in / Sign up

Export Citation Format

Share Document