water quality control
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2022 ◽  
Vol 14 (2) ◽  
pp. 927
Author(s):  
Zhanna Buryak ◽  
Fedor Lisetskii ◽  
Artyom Gusarov ◽  
Anastasiya Narozhnyaya ◽  
Mikhail Kitov

The quantitative and qualitative depletion of water resources (both surface and groundwater) is closely related to the need to protect soils against degradation, rationalization of land use, and regulation of surface water runoff within the watershed area. Belgorod Oblast (27,100 km2), one of the administrative regions of European Russia, was chosen as the study area. It is characterized by a high activity of soil erosion (the share of eroded soils is about 48% of the total area of arable land). The development phase of the River Basin Environmental Management Projects (217 river basins from the fourth to seventh order) allowed for the proceeding of the development of an integrated monitoring system for river systems and river basin systems. The methods used to establish a geoecological network for regional monitoring include the selection and application of GIS techniques to quantify the main indicators of ecological state and predisposition of river basins to soil erosion (the share of cropland and forestland, the share of the south-oriented slopes, soil erodibility, Slope Length and Steepness (LS) factor, erosion index of precipitation, and the river network density) and the method of a hierarchical classification of cluster analysis for the grouping of river basins. An approach considering the typology of river basins is also used to expand the regional network of hydrological gauging stations to rationalize the national hydrological monitoring network. By establishing 16 additional gauging stations on rivers from the fourth to seventh order, this approach allows for an increase in the area of hydro-agroecological monitoring by 1.26 times (i.e., up to 77.5% of the total area of Belgorod Oblast). Some integrated indicators of agroecological (on the watershed surface) and hydroecological (in river water flow) monitoring are proposed to improve basin environmental management projects. Six-year monitoring showed the effectiveness of water quality control measures on an example of a decrease in the concentrations of five major pollutants in river waters.


Author(s):  
Antônio José Ribeiro Nunes

This study demonstrates the aspects of research and mining in groundwater mining. It was intended to demonstrate the guidelines of the Mining Code and Water Code as legal beacons under the management of the National Mining Agency – ANM, federal regulator of mineral water exploration; to analyze the importance of water quality control for human consumption, from the compliance with Anvisa Resolutions – RDC-274/275/2005, which standardize the vase and microbiological characteristics. The process to make groundwater available as a mineral good to be industrialized, goes through research stages, till the final test with laboratory analyses for water classification. In this context, its main question is: what is the importance of mineral water quality for human consumption in health promotion? And it aims to analyze the quality control of mineral water, its importance for human consumption and health promotion, as well as the benefits of it. For this, a bibliographic research was carried out, consultation with the relevant legislations, books and websites of public agencies. The results showed that mineral water mining is an activity present in the daily life of society and its regular consumption contributes to the quality and promotion of healthy living, through control of the exploitation of mineral water mines, under the management of the National Mining Agency – ANM. It was evidenced that mineral water brings important health benefits: in body thermoregulation, heat absorption, nutrient transport, oxygen, hormones, composition of blood plasma, digestive juice, saliva formation, tears and urine. Being composed of different levels of micronutrients, which help alleviating health problems, such as: weakening of bones and muscles, reduction of collagen, dryness of the skin, low revitalization of cells and mucosa, aggravated by low consumption of water with drug properties and product of secular use that affect health. It was concluded that the prevalence of each type of mineral water and its composition, from ferruginous, sulfurous, radioactive, magnesian and iodized, can help in therapeutic treatments.


2021 ◽  
Author(s):  
Hiryanto Hiryanto ◽  
Entoh Tohani ◽  
Lutfi Wibawa ◽  
Akhmad Rofiq

This study aimed to describe the forms of community involvement in the Sekolah Sungai program. As a social institution, Sekolah Sungai needs support from all parties to tackle the range of problems in the Winongo River and thereby lower the disaster risk. A descriptive qualitative approach was used in this study and data were collected through interviews, observation, and documentation analysis. The results showed that there were two elements of community involvement: 1) contribution: community involvement in the forms of energy, notions, funding and provision of Sekolah Sungai facilities; and 2) attitude. Various forms of community involvement were aimed at maintaining the existence of the program. Without the involvement of the community in the process of building awareness, this program would not have been successful. The involvement of the community allowed Sekolah Sungai Winongo to maintain its existence and provide benefits to the surrounding communities in its efforts to reduce disaster risk and act as a water quality control agent along the Winongo River. Keywords: community involvement, Sekolah Sungai


Mathematics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 93
Author(s):  
Geovanny Gordillo ◽  
Mario Morales-Hernández ◽  
Pilar García-Navarro

Water quality control and the control of contaminant spill in water in particular are becoming a primary need today. Gradient descent sensitivity methods based on the adjoint formulation have proved to be encouraging techniques in this context for river and channel flows. Taking into account that most channels and rivers include junctions with other branches, the objective of this study is to explore the adjoint technique on a channel network to reconstruct the upstream boundary condition of the convection-reaction equation. For this purpose, the one-dimensional shallow water equations and the transport equation for a reactive solute are considered. The control is formulated through the gradient-descent technique supplied with a first-order iterative process. Both the physical and the adjoint equations are supplied with suitable internal boundary conditions at the junction and are numerically solved using a finite volume upwind scheme. The results reveal that the adjoint technique is capable of reconstructing the inlet solute concentration boundary condition in an acceptable number of iterations for both steady state and transient configurations using a downstream measurement location. It was also observed that the reconstruction of the boundary condition tends to be less effective the further away the measurement station is from the target.


2021 ◽  
Vol 2123 (1) ◽  
pp. 012018
Author(s):  
M Ahsan ◽  
T R Aulia

Abstract Water that is used as the basic human need, requires a processing process to get it. Water quality control in Tirtanadi Water Treatment Plant is still univariate, while theoretically the quality characteristics of water quality are correlated and there is also an autocorrelation due to the continuous process. In this study, quality control is performed on three main variables of water quality characteristics, namely acidity (pH), chlorine residual (ppm), and turbidity (NTU) using several multivariate control charts based on Multioutput Least Square Support Vector Regression (MLS-SVR) residuals. MLS-SVR modelling is used to overcome and get rid of autocorrelation. The input results of the MLS-SVR model are specified from the significant lag of the Partial Autocorrelation Function (PACF), which in this study, is the first lag. The results of the MLS-SVR input model and the optimal combination of hyper-parameters produce residual values that have no autocorrelation anymore. The residuals are used to develop the Hotelling’s T 2, Multivariate Exponentially Weighted Moving Average (MEWMA), and Multivariate Cumulative Sum (MCUSUM) control charts. In phase I, we found that the processes are statically controlled. Meanwhile, in phase II, the monitoring results show that there are several out-of-control observations.


2021 ◽  
Vol 934 (1) ◽  
pp. 012080
Author(s):  
I Mulyani ◽  
R Rumondang ◽  
D Aryani ◽  
I Lesmana

Abstract Eel has a savory meaty taste and contains high levels of Eicosapentaenoic acid (EPA) and Docosahexaenoic acid (DHA). The purpose of this observation was to determine intensive rearing techniques for eel (Anguilla bicolor bicolor) at the UPTD KPSDKP for Conservation and Supervision of Marine Fishery Resources of Sicincin, West Sumatra. The preparations conducted for rearing the eel consist of providing seeds, pond preparation, water supply, feed management, water quality control, disease control, growth sampling, and harvesting eel for consumption size. The eel seeds were obtained from natural catches of glass eel in the Cimandiri river, Pelabuan Ratu, West Java. Preparation of the eel pond included cleaning the concrete pond, filling the water by observing the water input into the eel pond. The provision of water for eel rearing was obtained directly from the Kapalo Ilalang Sicincin irrigation channel to the holding tanks before flowing to the eel rearing pond. Feeding management was carried out 2 times a day, namely the percentages of feeding in the morning (35 %) and at night (55%) with a feeding rate of 3%-5%. The feed provided to these eels was in the form of a paste made of powdery pellets. Measurements of water quality for eel rearing during observations were temperature (27-29°C), pH (6-7), DO (5.9-7.8 ppm), salinity (3-4 ppt) and NH3 (0.02-0.07 mg/l). In our observations, parasites shaped like cotton were discovered, which attacked the eel body, causing death. In growth sampling, the measurement of the length and body weight of the eel once a month is necessary to be done.


Author(s):  
R. Senthil Prabhu ◽  
D. Sabitha Ananthi ◽  
S. Rajasoundarya ◽  
R. Janakan ◽  
R. Priyanka

Technologies that could allow literally billions of everyday objects to communicate with each other over the internet have enormous potential to change all our lives. The Internet of Things (IoT) is a transformative development, these technologies are a way of boosting productivity, keeping us healthier, making transport more efficient, reducing energy needs and making our homes more comfortable. In recent years, Internet of Things (IoT) and Internet of Nanothings (IoNT) have drawn significant research attention in numerous fields such as Healthcare, Defence, Environmental monitoring, Food and water quality control etc., There are various transformations such as Smart cities, Smart homes, Smart factories, Smart transportation, due to IoT and IoNT. Health care delivery requires the support of new technologies like IoT, IoNT to fight and look against the new pandemic diseases. For the past two years COVID-19 spreaded over worldwide including India, are fighting with pandemic disease and still looking for a practical and cost-effective solution to face the problems arising in several ways. To minimize the person to person, contact and to maintain social distancing various technologies are utilized, among them IoT and IoNT play a major role in healthcare system and allied fields. This review mainly discuss about the IoT, IoNT, its components and various applications in healthcare and allied fields.


2021 ◽  
pp. 13359-13368
Author(s):  
Rati Bajpai, Hari Om Sharan

This paper mainly focuses on the recent advances in the mathematical models that provide the ability to predict the contaminant concentration levels of river water. The study represents an attempt for the researchers to study the problem of pollution, and we think that these mathematical analyses would provide better planning for water quality control. The model consists of a pair of coupled reaction Advection-diffusion equations for the pollutant and dissolved oxygen concentrations. Numerical solutions are obtained and some important inferences are drawn through simulation study. The Advection-Diffusion equation is characterized by the reaction term whenever it depends on concentration of the contaminants and in this case the original single Advection-diffusion equation will evolve to be a system of equations. It is no ticked that the higher are diffusion and reaeration coefficients, the faster is the river purity.


2021 ◽  
Author(s):  
Aleksei Nikolaevich Birzul'

The article discusses the current state of the issue about identifying changes in water as a result of various physical influences. The paper provides a classification of indication methods, analyzes their main advantages and disadvantages, discusses the most commonly used indicators, and assesses the prospects of their further usage for water quality control. The necessary information for lecturing and practical trainings on the water chemistry is given.


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