scholarly journals Chemical composition of groundwater in the zone of slow water exchange of the Upper Pontian aquifer, Northwestern Bulgaria

2021 ◽  
Vol 35 (1) ◽  
pp. 23-30
Author(s):  
Aglaida Toteva ◽  
Stefan Shanov
Keyword(s):  
Water Quality ◽  
Chemical Composition ◽  
Water Supply ◽  
Water Exchange ◽  
Hydrochemical Parameters ◽  
Geological Position

The Upper Pontian aquifer occupies the central part of the Lom Depression. The geological position determines its gradual dipping from the periphery to the central parts. It is one of the most water-abundant aquifers in Northwestern Bulgaria and is associated with the sands of the Archar Formation. The chemical composition of the waters is of interest and is important for the water supply in the area. The analysis of the data shows that there are regularities in the change of the water quality with aquifer depth. Significant differences in some of the hydrochemical parameters are found in the zone of slow water exchange and geological and hydrogeological explanations have been sought.

scholarly journals Quality of Qanat Water in Ganja-Kazakh Zone

2021 ◽  
Vol 7 (6) ◽  
Author(s):  
K. Allahverdiyeva
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Chemical Composition ◽  
Water Supply ◽  
Quality Indicators ◽  
Permissible Limit ◽  
Total Alkalinity ◽  
Specific Odor

The article is devoted to the issue of assessing the water quality of the qanats operating in the Ganja-Kazakh zone. It has been established that the salinity of the waters of the operating qanats varies from 0.3 to 0.94 g / l and their chemical composition is very favorable. The total alkalinity of qanat waters does not exceed the permissible limit and its value is 4–7 mg-eq/l, is transparent, does not have a specific odor, there are no heavy metals and other harmful ingredients in the water. The value of the irrigation coefficient is high and is 15–84. According to all quality indicators, the qanat waters are suitable for water supply and irrigation.

scholarly journals Environmental monitoring of drinking water quality of Birsk central water supply

2017 ◽  
Vol 6 (2) ◽  
pp. 51-55
Author(s):  
Aysylu Ayratovna Islamova ◽  
Maria Yuryevna Kolbina ◽  
Rishat Yakhievich Safikhanov
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Chemical Composition ◽  
Water Supply ◽  
Water Intake ◽  
Hard Water ◽  
Ecological Monitoring ◽  
Republic Of Bashkortostan ◽  
Microbiological Methods ◽  
The Republic

This paper examines effects of drinking water components, namely calcium and magnesium ions on the human body as well as it lists the main diseases that occur with prolonged use of hard water. Kostarevsky water intake is described as the only source of centralized water supply of the city. The paper contains data of ecological monitoring of drinking water taken from Kostarevsky water intake in Birsk from 2015 to 2017. The authors compare drinking water in Birsk and some other cities of the Republic of Bashkortostan. The chemical composition of the water was determined by titrimetric, gravimetric, colorimetric, organoleptic, and microbiological methods of investigation. The results of the analysis show that the water given to the population of Birsk along the central water supply line is microbiologically favorable. The chemical composition of water almost in all respects meets the requirements of Sanitary Regulations and Standards 2.1.4.1074-01 Drinking water. Hygienic requirements for water quality. However, the analysis results show that the rigidity of the water exchange is beyond the permissible limit of the norm, which can adversely affect the health of the population. The results obtained during the work can be useful for further ecological monitoring of drinking water in Birsk, Republic of Bashkortostan.

EVALUASI KUALITAS PERAIRAN DALAM PEMBENIHAN IKAN KERAPU TIKUS (Cromileptis altivelis) Di HATCHERY PERAIRAN TANJUNG RIAU BATAM

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Ratu Siti Aliah
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Good Condition ◽  
Brood Stock ◽  
Water Storage Tank ◽  
Water Quality Status ◽  
Set Up ◽  
Normal Status ◽  
Tank Water ◽  
Quality Status

An evaluation of the water quality at the hatchery of Tanjung Riau was conducted to understand the water quality status at the several place of the hatchery unit such as brood stock tanks, larva rearing tank, water storage tank, fi ngerling tank as well as the source of the water supply. The water quality status of Tanjung Riau generally is in a good condition to support the hatchery activities, but for turbidity and salinity were in the exceed and below the normal status and its infl uence on the spawning activity. To overcome the problem on the spawning of the brood stock, the improving of water supply with higher salinity and low turbidity should be set up to ensure the succeeded of the spawning.Key words : Water quality, grouper brood stock, hatchery,Tanjung Riau Batam

Methodological Approaches to Organization of Drinking Water Quality Monitoring Programs

2020 ◽  
pp. 4-8
Author(s):  
Yu.A. Novikova ◽  
I.O. Myasnikov ◽  
A.A. Kovshov ◽  
N.A. Tikhonova ◽  
N.S. Bashketova
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Cold Water ◽  
Water Quality Monitoring ◽  
Drinking Water Quality ◽  
Quality Monitoring ◽  
Water Supply Systems ◽  
Monitoring Programs ◽  
Supply Systems

Summary. Introduction: Drinking water is one of the most important environmental factors sustaining life and determining human health. The goal of the Russian Federal Clean Water Project is to improve drinking water quality through upgrading of water treatment and supply systems using advanced technologies, including those developed by the military-industrial complex. The most informative and reliable sources of information for assessing drinking water quality are the results of systematic laboratory testing obtained within the framework of socio-hygienic monitoring (SGM) and production control carried out by water supply organizations. The objective of our study was to formulate approaches to organizing quality monitoring programs for centralized cold water supply systems. Materials and methods: We reviewed programs and results of drinking water quality laboratory tests performed by Rospotrebnadzor bodies and institutions within the framework of SGM in 2017–2018. Results: We established that drinking water quality monitoring in the constituent entities of the Russian Federation differs significantly in the number of monitoring points (566 in the Krasnoyarsk Krai vs 10 in Sevastopol) and measured indicators, especially sanitary and chemical ones (53 inorganic and organic substances in the Kemerovo Region vs one indicator in the Amur Region). Discussion: For a more complete and objective assessment of drinking water quality in centralized cold water supply systems, monitoring points should be organized at all stages of water supply with account for the coverage of the maximum number of people supplied with water from a particular network. Thus, the number of points in the distribution network should depend, inter alia, on the size of population served. In urban settlements with up to 10,000 inhabitants, for example, at least 4 points should be organized while in the cities with more than 3,000,000 inhabitants at least 80 points are necessary. We developed minimum mandatory lists of indicators and approaches to selecting priority indices to be monitored at all stages of drinking water supply.

Leading the City of Baltimore into the 21st Century: Flexible Treatment Solutions and Integrated Raw Water Management

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
J. L. Manuszak ◽  
M. MacPhee ◽  
S. Liskovich ◽  
L. Feldsher
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Water Supply ◽  
Conceptual Design ◽  
Membrane Filtration ◽  
Treatment Plant ◽  
Low Pressure ◽  
Management Tool ◽  
Raw Water ◽  
The City

The City of Baltimore, Maryland is one of many US cities faced with challenges related to increasing potable water demands, diminishing fresh water supplies, and aging infrastructure. To address these challenges, the City recently undertook a $7M study to evaluate water supply and treatment alternatives and develop the conceptual design for a new 120 million gallon per day (MGD) water treatment plant. As part of this study, an innovative raw water management tool was constructed to help model source water availability and predicted water quality based on integration of a new and more challenging surface water supply. A rigorous decision-making approach was then used to screen and select appropriate treatment processes. Short-listed treatment strategies were demonstrated through a year-long pilot study, and process design criteria were collected in order to assess capital and operational costs for the full-scale plant. Ultimately the City chose a treatment scheme that includes low-pressure membrane filtration and post-filter GAC adsorption, allowing for consistent finished water quality irrespective of which raw water supply is being used. The conceptual design includes several progressive concepts, which will: 1) alleviate treatment limitations at the City's existing plants by providing additional pre-clarification facilities at the new plant; and 2) take advantage of site conditions to design and operate the submerged membrane system by gravity-induced siphon, saving the City significant capital and operations and maintenance (O&M) costs. Once completed, the new Fullerton Water Filtration Plant (WFP) will be the largest low-pressure membrane plant in North America, and the largest gravity-siphon design in the world.

Water Quality and Health

1991 ◽  
Vol 23 (1-3) ◽  
pp. 201-209 ◽  
Author(s):  
W. Kreisel
Keyword(s):  
Water Quality ◽  
Developing Countries ◽  
Drinking Water ◽  
Water Supply ◽  
Human Health ◽  
Pollution Control ◽  
Wastewater Reuse ◽  
Water Supplies ◽  
Minimum Quality Standards ◽  
Quality Guidelines

Water quality can affect human health in various ways: through breeding of vectors, presence of pathogenic protozoa, helminths, bacteria and viruses, or through inorganic and organic chemicals. While traditional concern has been with pathogens and gastro-intestinal diseases, chemical pollutants in drinking-water supplies have in many instances reached proportions which affect human health, especially in cases of chronic exposure. Treatment of drinking-water, often grossly inadequate in developing countries, is the last barrier of health protection, but control at source is more effective for pollution control. Several WHO programmes of the International Drinking-Water Supply and Sanitation Decade have stimulated awareness of the importance of water quality in public water supplies. Three main streams have been followed during the eighties: guidelines for drinking-water quality, guidelines for wastewater reuse and the monitoring of freshwater quality. Following massive investments in the community water supply sector to provide people with adequate quantities of drinking-water, it becomes more and more important to also guarantee minimum quality standards. This has been recognized by many water and health authorities in developing countries and, as a result, WHO cooperates with many of them in establishing water quality laboratories and pollution control programmes.

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