scholarly journals MODIFIED SORBENTS AND THEIR APPLICATION FOR EXTRACTION OF METAL IONS

2021 ◽  
pp. 75-79
Author(s):  
N. C. Murzakassymova ◽  
N. A. Bektenov ◽  
M. A. Gavrilenko
Keyword(s):  
Metal Ion ◽  
Maximum Permissible Concentration ◽  
Carbon Materials ◽  
Water Supply Systems ◽  
Technological Properties ◽  
Surface Modified ◽  
High Degree ◽  
Supply Systems ◽  
Modified Sorbents ◽  
Significant Factors

The data on accumulated mining waste in the territory of Kazakhstan are presented. Their processing has become very important in our time. The structure of surface-modified carbon materials with a grafted layer is given. New modified carbon sorbents were obtained, oleum was used as a modifying agent. It was revealed that the capacitive characteristics of the modified sorbent are significantly higher than that of the original one, which will make it possible to more efficiently extract the metal ion from wastewater and technogenic formations. Sorption is an effective method of extracting valuable components from wastewater and man-made formations. This method allows you to recover valuable substances with a high degree of wastewater treatment, which can be purified to the maximum permissible concentration of pollutants and then used in technological processes or in recycling water supply systems. Processing involves ores characterized by a low content of valuable components, fine dissemination and similar technological properties of minerals. The existing technologies for the development of minerals make it possible to use only a small part of the valuable mineral mass extracted from the subsoil, and the rest forms waste, which, as it accumulates and is stored, becomes one of the most significant factors of anthropogenic changes in the environment.

ELECTRICITY LOAD PREDICTION FOR WATER SUPPLY SYSTEMS

2008 ◽  
Vol 7 (4) ◽  
pp. 453-458
Author(s):  
Mihai Gavrilas ◽  
Gilda Gavrilas ◽  
Ovidiu Ivanov
Keyword(s):  
Water Supply ◽  
Water Supply Systems ◽  
Load Prediction ◽  
Electricity Load ◽  
Supply Systems

SIMULATION OF SOFT START OF SYNCHRONOUS ELECTRIC DRIVES

2019 ◽  
Author(s):  
Shakhboz Dadabaev
Keyword(s):  
Computer Simulation ◽  
Electric Drive ◽  
Water Supply Systems ◽  
Factors Affecting ◽  
Electric Drives ◽  
Soft Start ◽  
Simulation Results ◽  
Pumping Units ◽  
Negative Factors ◽  
Supply Systems

The main negative factors affecting the starting modes of synchronous electric drives of pumping units of irrigation water supply systems were identified, computer simulation of direct and soft start of synchronous electric drive was made, the simulation results are shown in graphs and a brief conclusion was made on the study.

LAVIN NDZ-S BRONZE

Alloy Digest ◽  
1965 ◽  
Vol 14 (5) ◽  
Keyword(s):  
Water Supply ◽  
Physical Properties ◽  
Tensile Properties ◽  
Base Alloy ◽  
High Strength ◽  
Water Supply Systems ◽  
Copper Base ◽  
Valve Stem ◽  
Copper Base Alloy ◽  
Supply Systems

Abstract LAVIN NDZ-S BRONZE is a copper-base alloy recommended as a high-strength dezincification and dealuminization resistant valve stem material in water supply systems. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on casting and machining. Filing Code: Cu-151. Producer or source: R. Lavin & Sons Inc..

Review of research in the field of hygiene safety of recreational and drinking water use of the population of the Top Don basin

2020 ◽  
pp. 63-72
Author(s):  
Igor Mekhantiev
Keyword(s):  
Drinking Water ◽  
Water Use ◽  
Current System ◽  
Water Supply Systems ◽  
State Monitoring ◽  
Scientific Publications ◽  
Chemical Indicators ◽  
State Of Water ◽  
Supply Systems ◽  
Regional Problems

The article provides an overview of regional studies addressing the hygienic safety of recreational and drinking water use of the population of the Upper Don basin, conducted on the territory of the Voronezh region. The results of dissertation research for 1997–2019 and materials of modern scientific publications on the studied problem for 2015–2019, showing priority regional problems of water use of the population of the Upper Don Basin are considered. The data of scientific and practical work and state monitoring on the inconsistency of water quality with current standards in places of recreation at water bodies and drinking water of centralized water supply systems for sanitary and chemical indicators and microbiological safety indicators are presented. A description of the current system for monitoring the state of water resources is presented and attention is drawn to the need for its improvement.

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