scholarly journals WATER INTAKE FROM A SURFACE WATER SOURCE FOR FISH BREEDING AND RECLAMATION COMPLEXES

2021 ◽  
Author(s):  
A. V. Shevchenko ◽  
◽  
G. N. Puras ◽  
Keyword(s):  
Surface Water ◽  
Water Supply ◽  
Water Intake ◽  
Water Body ◽  
Aquatic Organisms ◽  
Supply System ◽  
Water Supply System ◽  
Design Solution ◽  
Fish Breeding ◽  
Fish Protection

Purpose: development of a layout-design solution for water intake from a surface water body, excluding the entry of harmful aquatic organisms into fish-breeding reservoirs. In accordance with modern ideas about water intakes that meet the requirements of fish protection and prevent the ingress of aquatic organisms into water supply system of fish-breeding complexes, filtering water intakes are the most effective. Materials and Methods. The water intakes structures development is based on the materials of the fish and water body surveys and the results of the analysis of developments in this area. Results. As part of water nutrition system of the fish-breeding complex, it is proposed to use a water intake with a two-chamber water inlet equipped with filtering panels and regulating screens. Filtering panels located at the head of each of the chambers ensure the retention of harmful, weed and predatory aquatic organisms, and the screens ensure the water inlet shutdown at replacing the filtering panels. Various modes of water inlet chambers operation are considered for intake of various water flows, replacement of filter cassettes and shutdown of water intake operation. It is proposed to use a filtering panel with impervious chambers, which make it possible to simplify the cleaning of its filler as a filtering element. Conclusions. A layout solution for a filtering water intake as part of water nutrition system of the fish-breeding complex has been proposed and developed. The design of a two-chamber water intake based on the use of filter panels and impervious screens, providing fish protection functions and preventing harmful, weed and predatory species of aquatic organisms from entering the water supply system is developed. A technology for water inlet functioning under various operating modes of the water intake has been developed. It is proposed to use a filtering panel with a simplified scheme for cleaning it from colmatation products as a water inlet element of the water intake.

scholarly journals AUTOMATION OF CLOSED WATER SUPPLY SYSTEM FOR AQUATIC ORGANISMS

2021 ◽  
Vol 2021 (3) ◽  
pp. 49-55
Author(s):  
Ludmila Petrovna Skripko ◽  
Anastasia Andreevna Skripko
Keyword(s):  
Water Supply ◽  
Fish Habitat ◽  
Aquatic Organisms ◽  
Supply System ◽  
Water Supply System ◽  
Rational Use ◽  
Closed Water ◽  
Feeding Process ◽  
Effective Development ◽  
Production Areas

The article describes the automated closed water supply system based on industrial controllers OWEN, which allows creating the necessary fish habitat, increasing the population growth rate, rational use of production areas, conducting experiments on fish breeding, improving their characteristics. The need to develop the different modes of the system operation, in particular, temperature modes, oxygen concentration levels, feeding periods, etc., was taken into account when creating a software package written in the programming language FBD. The developed system includes lower, middle and upper levels. Control over the operation of the closed water supply system is carried out by monitoring. Fish feeding process is automated. Water purification is carried out in the non-stop regime, which decreases the amount of water used, lowers the costs and meets the principles of rational use of natural resources protecting the environment. It is possible to create the necessary dynamic modes of the system for the correct development of embryos and the effective development of various fish species and the possibility of using laser radiation of the required power. The system is controlled by a personal computer using the MasterSCADA package

scholarly journals Urban expansion impacts the surface water source of the water supply system in Belém and Ananindeua, Brazil

2020 ◽  
Vol 9 (7) ◽  
pp. e303974098
Author(s):  
Francianne Vieira Mourão ◽  
José Almir Rodrigues Pereira
Keyword(s):  
Surface Water ◽  
Water Supply ◽  
Human Activities ◽  
Riparian Vegetation ◽  
Urban Expansion ◽  
Water Source ◽  
Supply System ◽  
Water Supply System ◽  
Metropolitan Region ◽  
Special Focus

The aim of that research is to analyse the evolution of human activities close to Lake Bolonha, one of the main surface water sources for the Water Supply System in downtown Belém and Ananindeua, is investigated. Research consists of three stages. Stage 1 characterizes the environs and evaluates the importance of Lake Bolonha within the urban context. Stage 2 identifies human activities in the last ten years in the environs of the water source. Stage 3 analyzes impacts and environmental degradation risks, with special focus on vegetation around the lake. Results show that urban expansion reduced riparian vegetation and triggered sewerage flow into the lake, compromising self-cleaning capacity in the medium and long term, with an increase of pollution/contamination. The administration should develop and intensify activities to avoid irregular land occupation, establish a sewerage system and restitute the riparian vegetation lost. Lake Bolonha is highly relevant for the water supply system of approximate one million people of Belém and Ananindeua within the metropolitan region of Belém, Brazil.

scholarly journals Assessment of Water Resources and Analysis of Safe Yield and Reliability of Surface Water Reservoirs of Asmara Water Supply System

2017 ◽  
Vol 7 (1) ◽  
pp. 45
Author(s):  
Kahsay N. Zeraebruk ◽  
Alfred O. Mayabi ◽  
John M. Gathenya
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Water Balance ◽  
Water Supply ◽  
Water Demand ◽  
Assessment Tool ◽  
Supply System ◽  
Water Supply System ◽  
Balance Model ◽  
Safe Yield

In a water supply system safe yield is the average annual volume that can be supplied to the system subject to an adopted set of operational rules and a typical demand pattern without violating a given level of service standard. It is dependent upon storage and hydrologic (rainfall/runoff/evaporation) characteristics of the sources, the source facilities, upstream and downstream permitted withdrawals and minimum in-stream flow requirements.For effective operation and management of a water supply system, it is important to have knowledge of water balance of the reservoirs and estimate their safe yield at a certain level of reliability. In this study, to assess water resources potential of existing surface water sources and new catchments and estimate the water balance of the water supply system, the hydrologic simulation model, SWAT (Soil and Water Assessment Tool) was utilized. The model was calibrated and validated successfully. The safe yield and corresponding reliability of reservoirs were estimated using a deterministic water balance model. The results of the water balance analysis and projected water demand were used to assess existing water supply situation and challenges in future. The assessment indicated that the gap between demand and supply at high population growth rate scenario is wide and very critical.To close the gap between the available water supply and the increasing water demand in the study area, utmost attention is needed by the decision making authorities and the management of the water utility to improve performance efficiency of the water supply system by instituting effective water governance and reducing leakage losses.

scholarly journals Reconstruction of the Water Supply to the City of Igarka of Krasnoyarsk Region

2021 ◽  
pp. 187-197
Author(s):  
Gregory V. Krasavin ◽  
Anatoly I. Matiushenko
Keyword(s):  
Water Supply ◽  
Water Intake ◽  
Supply System ◽  
Water Supply System ◽  
Water Supply Systems ◽  
Far North ◽  
Krasnoyarsk Region ◽  
Supply Systems ◽  
The City

Some features of use of water supply systems in the conditions of the Far North are stated. the considered water supply system in Igarka prior to the reconstruction. The reasons for the need for reconstruction of existing water intake facilities are presented. The composition of the reconstructed water intake facilities is described. The experience of operation of reconstructed water supply facilities in Igarka is summarized

DETERMINATION OF ARSENIC, CADMIUM, LEAD, COOPER AND ZINC IN DRINKING WATER FROM R. MACEDONIA

2018 ◽  
Vol 28 (4) ◽  
pp. 1259-1264
Author(s):  
Kiril Lisichkov ◽  
Katerina Atkovska ◽  
Neven Trajchevski ◽  
Orce Popovski ◽  
Nadica Todorovska
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Supply System ◽  
Water Supply System ◽  
Bottled Water ◽  
Cadmium Lead ◽  
The City

The presence of some chemical compounds at higher levels than maximum permissible concentrations (MPC) in the drinking water, suggests of water resources pollution. In this paper the following elements were analyzed: total arsenic, cadmium, lead, cooper and zinc. Twelve samples of water from the water supply system from the city of Skopje were examined during one year from three different springs. Also, ten samples of bottled water from three producers from the Macedonian market were tested.The determined average mass concentrations of total As, Cd(II), Pb(II), Cu(II) and Zn(II) in the analyzed water samples from the water supply system are 1.35 μg/l, 0.06 μg/l, 0.6 μg/l, 0.9 μg/l and 1,12 μg/l, respectively, and for the tested bottled water, the mean values ranges from 0.56 - 0.83 μg total As / l, 0.053 - 0.056 μg Cd(II)/l, 0.51 - 0.54 μg Pb(II)/l , 0.6 - 0.87 μg Cu(II)/l and 0.68 - 0.8 μg Zn(II)/l water.The following instrumental analytical methods and techniques were used for the analysis of the tested samples of drinking water: flame atomic absorption spectroscopy (AAS), atomic absorption spectroscopy with hydride cеll, electrothermal atomic absorption spectroscopy.The obtained results are shown in tables and graphic form. According to the obtained results a comparative analysis was carried out indicate that it is a water of good quality that can be used in different branches of the process industry.The obtained results in this paper do not exceed the values of the MPC of the Republic of Macedonia prescribed by the legal regulations for the drinking water, which confirm the health safety of the drinking water from the water supply system in the city of Skopje and the packed waters from the Macedonian market in relation to the tested elements.

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