scholarly journals Investigation of geochemical quality of water from public fountains of Salvador

2020 ◽  
Vol 34 (1) ◽  
Author(s):  
Ana Carina Matos Silva ◽  
Manoel Jerônimo Moreira Cruz ◽  
Isabel Honorata Souza de Azevedo ◽  
Alexandre Dacorso Daltro Milazzo
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Public Access ◽  
Mitigation Measures ◽  
The Public ◽  
Quality Of Water ◽  
Thermotolerant Coliforms ◽  
The City ◽  
Support Decision Making

This study aims to characterize, in terms of physicochemical, bacteriological and metal concentration parameters, the water quality of public fountains in the city of Salvador (Bahia, Brazil), in order to identify its potential for current uses, contributing to the diagnosis of water quality on the public access. Therefore, campaigns were conducted in July and November of 2017 and 2018 in four fountains (Fonte Nova, Estica, Pedrinhas/Pedreiras and Express way), which were geo-referenced and analyzed physical-chemical parameters (pH, conductivity, temperature, dissolved oxygen, turbidity and total dissolved solids, salinity, sulfate, nitrate, chloride and alkalinity), bacteriological (thermotolerant coliforms) and metals (Cd, Pb, Ni, Co, Cr, Cu, Zn, Fe, Mn). The fountains showed values in disagreement with the CONAMA Ordinances 396/2008, 357/2005, and 274/2000 mainly about the pH, Dissolved Oxygen, Nitrate and Thermotolerant Coliforms parameters, indicating inadequacy for their intended uses. This information should support decision making and mitigation measures that minimize the environmental degradation of urban fountains in the city of Salvador (BA), from the adoption of recovery, revitalization and monitoring measures that enable the effective management of these water resources.

scholarly journals Water quality of the reservoirs used for irrigation in São José dos Pinhais, Paraná State, Brazil

2016 ◽  
Vol 46 (4) ◽  
pp. 626-631
Author(s):  
Tiago Miguel Jarek ◽  
Jorge Luiz Moretti de Souza ◽  
Nerilde Favaretto ◽  
Lucimeris Ruaro
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Coliform Bacteria ◽  
Environmental Preservation ◽  
Quality Of Water ◽  
Average Rainfall ◽  
Agricultural Potential ◽  
Thermotolerant Coliforms ◽  
Type Of Land Use

ABSTRACT: Land use outside its agricultural potential and low vegetation cover in the watershed impair the quality of water used for irrigation and may contribute to the spread of pathogenic coliform bacteria. The objective of this study was to relate the quality of irrigation water with the intensity and type of land use and the rainfall in a vegetable-producing region of São José dos Pinhais, Paraná. Water samples were collected monthly in 2013 from two reservoirs and one preserved source. After collection, the samples were chilled in Styrofoam boxes and transported to the laboratory for analyses of the total and thermotolerant coliforms. Effect of land use was analyzed by probability estimation trees. High land use and weekly above average rainfall increased the probability of thermo tolerant coliforms exceeding the limit allowed under legislation. In regards to thermo tolerant coliforms in the analyzed period, the water from only one reservoir was in accordance with the legislation for the quality of water to irrigate vegetables that are consumed raw. Results of this study are an alert to the local government for the necessity of environmental preservation to maintain the water quality of the county.

PROBLEMS OF WATER SUPPLY IN THE TERRITORY OF THE OREL REGION AND WAYS TO SOLVE IT

2021 ◽  
Author(s):  
Павел Алексеевич Лапин ◽  
Сергей Александрович Копылов ◽  
Дмитрий Васильевич Елисеев
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
The State ◽  
Quality Of Water ◽  
The City

В статье анализируется состояние водного фонда в области и обеспеченность жителей региона водой. Рассматриваются основные проблемы неудовлетворительного качества воды в районах области и в г. Орле. Предлагается комплекс мероприятий с целью повышение качества водоснабжения на территории Орловской области путём строительства пяти объектов водоснабжения. The article analyzes the state of the water fund in the region and the provision of water to the residents of the region. The main problems of unsatisfactory water quality in the districts of the region and in the city of Orel are considered. A set of measures is proposed to improve the quality of water supply in the territory of the Orel region through the construction of five water supply facilities.

scholarly journals Sistem Monitoring Dan Kontroling Kualitas Air Tambak Udang Vannamei Berbasis Arduino Menggunakan Teknologi Internet Of Things

2020 ◽  
pp. 105-108
Author(s):  
Nuris Dwi Setiawan ◽  
Indra Ava Dianta
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Salt Content ◽  
Ph Sensor ◽  
Pond Water ◽  
Storage Media ◽  
Quality Of Water ◽  
Water Quality Change ◽  
To Receive

Vannamei shrimp is a variety of shrimp that is very sensitive to changes in water quality, growth and life of vannamei shrimp which are directly affected by changes in temperature, salt content, dissolved oxygen, and pH (Hydrogen Potential) content in water. So far, vannamei shrimp cultivators know the quality of water by taking pond water samples with a certain period of time, uncertain natural conditions can make pond water quality change drastically if not maintained can inhibit growth or result in shrimp death.Making a monitoring system and controlling the quality of shrimp pond water using a water temperature sensor, salinity sensor, DO sensor and pH sensor installed on the Arduino Mega 2560 device, NodeMCU is used to receive and send data wirelessly, the system uses programming language c. This tool can be used to start the waterwheel automatically if it is within a certain threshold to maintain the temperature and dissolved oxygen in the pool water based on the value obtained from the sensor. The monitoring results obtained will be displayed to the user in real time through the interface and will be stored in the form of a text file on the storage media.

scholarly journals Ground Water Quality of Gandhinagar Taluka, Gujarat, India

2008 ◽  
Vol 5 (3) ◽  
pp. 435-446 ◽  
Author(s):  
Mayur C. Shah ◽  
Prateek G. Shilpkar ◽  
Pradip B. Acharya
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Water Samples ◽  
Oxygen Demand ◽  
Total Alkalinity ◽  
World Health ◽  
Total Hardness ◽  
Drinking And Irrigation ◽  
Quality Of Water

Present communication deals with study of physico-chemical parameters such as pH, electrical conductivity (EC), total dissolved solids (TDS), total alkalinity (TA), calcium hardness (CaH), magnesium hardness (MgH), total hardness (TH), chloride (Cl-), fluoride (F-), sodium (Na+), potassium (K+), dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD) and sulphate (SO42-) of water samples of bore wells of forty villages of Gandhinagar taluka of Gujarat state,India. The experimental values of water samples were compared with standard values given by World Health Organization (WHO) and United State Salinity Laboratory for drinking and irrigation purposes respectively. Water Quality Index (WQI) was also calculated to know the over all quality of water samples. The statistical analysis like mean, standard deviation (SD), coefficient of variance (% CV), analysis of variance (ANOVA),t-test, coefficient of correlation (r) and regression analysis of obtained data were carried out. The results show that the quality of water is poor and quite good for drinking and irrigation purposes respectively. The variance was found significant at 1% level of significance in case of sodium and potassium content and at 5% in case of total alkalinity and dissolved oxygen among the four regions (North, South, East and West) of Gandhinagar taluka. The linear relation also established for each pair of water quality parameters of studied water samples.

scholarly journals ANALISIS PERUNTUKAN DANAU SIPIN DITINJAU DARI KETERSEDIAAN DAN KUALITAS AIR

2017 ◽  
Vol 2 (1) ◽  
pp. 18
Author(s):  
Guntar Marolop S ◽  
Sutrisno Sutrisno
Keyword(s):  
Water Quality ◽  
Open System ◽  
Lake Water ◽  
Water Quality Index ◽  
Quality Index ◽  
Water Quantity ◽  
Index Method ◽  
Quality Of Water ◽  
The City

The Lake is an ecosystem of wetlands to note preserved. However, since the Lake is an open system that can also be utilized for the certain provisions tailored to support power and capacity of the Lake. One of the supported power and capacity of the Lake is the availability and quality of the water of the Lake. Sipin lakes located in the city of Jambi, have long been exploited by various parties, just that its utilization is not maximal for a variety of activities. To maximize its utility it is necessary to know the power support and power tampungnya. By knowing the power support and power tampungnya then it can be determined the allocation it is used so that will give you maximum results. One of the variables that need to be taken care of in order to use Sipin Lake against correspond to peruntukkannya is about the availability and quality of water. Study on quantity and quality of water of the Lake can be done by way of Sipin analyzed the data using the method of precipitation F.J. Mock. Water quality studies done by using water quality Index method of electronically Stored. F.J. method using Mock data to analyze rainfall from year 2005 until 2015, obtained that debit maximum inlet reach 4,870 m3/sec and the minimum discharge of 2,090 m3/sec.Method Stored i.e. testing kualiats Sipin lake water from year 2014 2016 disimpulkkan s/d that the water quality of Lake Sipin only in accordance with the requirements of the water quality of the IV. From fluctuations in discharge and water quality of the IV, then Lake peruntukaan Sipin can only be utilized to provide water gardening or urban businesses or other businesses that comply with the requirements of the water quality of the IV.Keywords: Lake, water quantity, water quality, allocation, and utilization.

scholarly journals Water quality of the Atibaia river in the city of Paulínia/SP: evaluation of the Electrical Conductivity and Chloride variables

2021 ◽  
Vol 43 ◽  
pp. e66
Author(s):  
Camila Pereira Montovani ◽  
Cassiana Maria Reganhan Coneglian ◽  
Elaine Cristina Catapani Poletti
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Pearson Correlation ◽  
Oxygen Demand ◽  
Principal Component ◽  
E Coli ◽  
Thermotolerant Coliforms ◽  
Linear Correlation Analysis ◽  
The City

The present study aimed to evaluate the characteristics that most influenced the water quality variability of the Atibaia river in the city of Paulínia/SP, the coordinates of the water collection point are given by 22º44'23”(S) and 47º07 ' 40 ”(W), in the dry and rainy seasons, from 2006 to 2016. The data used in this study come from the monitoring of parameters carried out in the spring by a research team, accompanied by periodic collections of surface water samples and analyzes laboratory tests. The parameters addressed included: precipitation, temperature, Hydrogenionic potential (pH), turbidity, thermotolerant coliforms (Escherichia coli (E. coli)), dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total nitrogen (Ntotal), total phosphorus (Ptotal), total dissolved solids (TDS), electrical conductivity (EC) and chlorides (Cl-). Water quality was assessed using linear correlation analysis, using the Pearson Correlation coefficient (r), and Multivariate Analysis, using Principal Component Analysis (PCA). The presence of EC, Cl- and COD in both periods indicates quality characteristics related to the mineralization of organic compounds present in the water and the eutrophication process.

CWQI index as quality indicator of surface water - An approach on the Olt River, Romania

2020 ◽  
pp. 93-106
Author(s):  
Claudia Sandru ◽  
◽  
Mihaela Iordache ◽  
Andreea Maria Iordache ◽  
Roxana Elena Ionete ◽  
...  
Keyword(s):  
Water Quality ◽  
Comparative Evaluation ◽  
Water Quality Management ◽  
Anthropogenic Factors ◽  
The Public ◽  
Quality Of Water ◽  
Major Cations ◽  
Physico Chemical ◽  
Different Seasons

This work aims at assessing the pollution degree of the Olt River (Romania), based on the Canadian Water Quality (CWQI) index, by monitoring twenty twos locations along the middle and south part of the river basin for a period of four months, from March to October, during 2018. A comprehensive physico-chemical analysis involving major cations (Ca2+, Mg2+, Na+), anions (Cl-, SO42-, N-NO3--) and general parameters (pH, electrical conductivity, total dissolve solids) was performed for this purpose. Results demonstrated that CWQI values classified the water in the investigated sectors of the river as fair (values ​​between 66.08 to 79.05), marginal (56.22 to 64.63) and good (value of 85.60). This method appears to be more systematic and provide comparative evaluation of the water quality in different seasons of the year. The results showed that there is a large variations in the parameters in different sections of the river due to different anthropogenic factors. Therefore, this index may be helpful as marker for the public to better understand the quality of water, but also as tool for water quality management.

scholarly journals QUALIDADE DA ÁGUA EM UM IGARAPÉ BALNEÁRIO NA AMAZÔNIA: estudo de caso em Porto Velho

2017 ◽  
Vol 3 (8) ◽  
pp. 251
Author(s):  
Cristiano Torres do Amaral ◽  
Francisco Solon Almeida da Silva
Keyword(s):  
Water Quality ◽  
Quality Analysis ◽  
Tourist Attractions ◽  
Quality Of Water ◽  
Engineering And Technology ◽  
Private Laboratory ◽  
Relationship Of ◽  
The City ◽  
Porto Velho

QUALITY OF WATER IN BATHING PLACES IN CREEKS OF THE AMAZON: case study in Porto VelhoCALIDAD DEL AGUA EN UN IGARAPÉ BALNEARIO EN LA AMAZONIA: estudio de caso en Porto VelhoOs balneários são importantes atrativos turísticos na região Amazônica, gerando emprego e renda de maneira sustentável. Em Porto Velho, Rondônia (RO), por exemplo, a Prefeitura Municipal criou até um “Roteiro das Águas” com um circuito de 20 balneários próximos a cidade. Esses locais de banho e recreação são movimentados e por isso é importante garantir a qualidade da água para segurança dos turistas. Preocupados com essa questão social e ambiental, alunos dos cursos de engenharia e tecnologia de uma faculdade privada de Rondônia se organizaram para análise da qualidade da água de um movimentado balneário da região. O público-alvo deste trabalho são banhistas, turistas, proprietários dos balneários e agentes públicos de fiscalização em Rondônia. O balneário foi selecionado a partir da relação oficial do guia “Roteiro das Águas”. A coleta da amostra foi realizada pelos alunos e a análise dos parâmetros físicos, químicos e bacteriológicos foi feita em um laboratório privado para emissão do laudo. O texto também apresenta uma breve revisão bibliográfica sobre os parâmetros que definem a balneabilidade e os riscos de contágio em águas poluídas. Ao final, são discutidos os resultados obtidos na análise da qualidade da água.Palavras-Chave: Balneário; Igarapé; Água; Balneabilidade; Amazônia.ABSTRACTThe bathing places in creeks are important tourist attractions in the Amazon region, generating jobs and income in a sustainable way. In Porto Velho, Rondônia (RO), for example, the City Hall has created a "Guide of The Waters" with a route of 20 bathing places near the city. These bath and recreation places are busy and so it is important to ensure the quality of the water for the safety of the tourists. Concerned with this social and environmental issue, students of the engineering and technology courses of a private college in Rondônia organized themselves to analyze the water quality of a busy bathing place in the region. The target audience for this work is bathers, tourists, beach owners and public inspection agents in Rondônia. The bathing place was selected based on the official relationship of the "Guide of The Waters". The sample was collected by the students and the physical, chemical and bacteriological parameters were analyzed in a private laboratory to issue the report. The text also presents a brief bibliographical review on the parameters that define bathing and the risks of contagion in polluted waters. At the end, the results obtained in the water quality analysis are discussed.Keywords: Bathing Place; Creeks; Water; Bathing Standards; Amazon.RESUMENLos balnearios son importantes atracciones turísticas de la región Amazónica, con generación de empleo e ingresos de manera sostenible. En Porto Velho, Rondônia (RO), por ejemplo, la ciudad creó un "Guía de las Aguas" con 20 balnearios puerto de la ciudad. Estos locales de baño y de recreación se mueven y lo que es importante para asegurar la calidad del agua para la seguridad de los turistas. Preocupados de que los problemas sociales y ambientales, los estudiantes de los cursos de ingeniería y tecnología de una universidad privada de Rondônia organizados para el análisis de la calidad del agua de un agitado balneario en la región. El público objetivo de este trabajo son los bañistas, los turistas, los propietarios de los balnearios y los agentes del orden público en Rondônia. El complejo fue seleccionado de la lista oficial de la "Guía de las Aguas". La recogida de muestras se llevó a cabo por los estudiantes y análisis de propiedades físicas, químicas y bacteriológicas parámetros que se hizo en un laboratorio privado para informar del problema. El texto también presenta una breve revisión de la literatura sobre los parámetros que definen los riesgos de contagio y de baño en aguas contaminadas. Al final, los resultados obtenidos se discuten en el análisis de la calidad del agua.Palabras clave: Balneario; Igarapé; Agua; Normas de Baño; Amazonia.

scholarly journals Monitoring the quality of the water used in mobile dialysis services in intensive care units in the city of Rio de Janeiro

2021 ◽  
Author(s):  
Priscila Rodrigues de Jesus ◽  
Joana Angélica Barbosa Ferreira ◽  
Juliana dos Santos Carmo ◽  
Sheila Regina Gomes Albertino ◽  
Santos Alves Vicentini Neto ◽  
...  
Keyword(s):  
Water Quality ◽  
Burkholderia Cepacia ◽  
Rio De Janeiro ◽  
Aluminum Content ◽  
Heterotrophic Bacteria ◽  
Microbiological Quality ◽  
Quality Of Water ◽  
Ensure Patient Safety ◽  
The City

Abstract Introduction: Monitoring water quality in mobile dialysis (MD) services, assessing critical points and characterizing the risks inherent in the process, is essential to avoid risks to the patient's health. This study evaluated the microbiological quality of water in the MD of 36 hospitals with intensive treatment in the city of Rio de Janeiro. Methods: 204 water samples were collected from the points of entry to the network (NET), post-osmosis (PO) and dialysis solution (DS). The samples were evaluated for heterotrophic bacteria count, pathogen search, presence of endotoxins and aluminum content. Results: Bacterial contamination at 3 collection points in 36 hospitals was 30% (32/108); 42% from DS, 31% from PO and 17% from NET, with the presence of Pseudomonas aeruginosa, Stenotrophomonas maltophilia , Burkholderia cepacia and Ralstonia pickettii in the 3 points. Endotoxin concentrations above 0.25 EU/mL occurred in 77% of the samples (17/22) analyzed in the PO. In the aluminum content, values above 0.01 mg/L were presented in 47% (7/15) of PO samples and 27% (4/15) of NET samples. There is no specific legislation for water used in the MD; therefore, the limits of the RDC of the National Health Surveillance Agency (Anvisa) 11/2014 were used; which regulates conventional hemodialysis services. Conclusion: The results highlight the importance of evaluating water quality in MD services to ensure patient safety and support the sanitary monitoring of this process as a healthcare promoter.

scholarly journals Performance Evaluation of Tuntang Watershed based on Quantity and Quality of Water

2016 ◽  
Vol 30 (2) ◽  
pp. 176
Author(s):  
Ugro Hari Murtiono ◽  
Paimin Paimin
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Performance Evaluation ◽  
Dissolved Oxygen ◽  
Water Discharge ◽  
Total Dissolved Solids ◽  
Dry Season ◽  
Water Quantity ◽  
Quality Of Water

The objective of the study was to evaluate the performance of Tuntang Catchment based on water quantity and quality area ranging from its upstream to downstream. The method used to determine the water quantity was by carrying out ground study on water discharge in the dry season (June 2011) in the research site, while the water quality was determined by conducting a laboratory analysis on the samples obtained from the sites in both the rainy and dry season (January and June 2011). The results indicated that the quantity of water discharge in Tuntang River was categorized “good”, although it was utilized for many uses such as irrigation, hydropower, and drinking water. Most of water discharges were mainly supplied from the upstream of Rawa Pening Lake. The water quality determined from the parameters of total dissolved solids, conductivity, pH, phosphate, and nitrate could be classified as “good”, meanwhile, the turbidity and dissolved oxygen were classified as “poor”.

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