scholarly journals The Forecast of Phytoplankton Spring Blossoming in the Uchinsky Reservoir

10.12737/8226 ◽  
2015 ◽  
Vol 4 (1) ◽  
pp. 12-17
Author(s):  
Юсупова ◽  
K. Yusupova ◽  
Корсак ◽  
M. Korsak ◽  
Мошаров ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply Systems ◽  
Total Solar Radiation ◽  
Phytoplankton Dynamics ◽  
Treatment Efficiency ◽  
Active Radiation ◽  
Start Date ◽  
Spring Period ◽  
Meteorological Observatory ◽  
Supply Systems

Increase of water treatment efficiency in water supply systems during the spring period directly depends on the forecast accuracy related to mass blossoming of phytoplankton in drinking reservoirs. Object of research is the Uchinsky reservoir – the drinking reservoir having insignificant its own water collection area, and fed by water of Moscow Canal. The data on seasonal phytoplankton dynamics received in Akulovsky Hydrosite Laboratory of the MCUE "Mosvodokanal" for two stations: Pestovo (reservoir’s headwater) and Listvyanka (reservoir’s lower part), and also actinometric data of continuous supervision from 1998 to 2003 performed by Lomonosov Moscow State University’s Geographical faculty Meteorological Observatory (MOMGU) have been used in this work. Results of mathematical modeling for dependence of start date and peak values of phytoplankton’s spring blossoming in the Uchinsky reservoir depending on intensity of total solar radiation during the period preceding the phytoplankton blossoming have been presented. It has been established that the more solar energy streams’ values in the range of photosynthetic active radiation (PhAR) will be received by the reservoir surface in the middle of February, the later peaks of phytoplankton’s spring blossoming will be observed. Research results represent undoubted interest for the analysis of reservoir’s light factor influence on phytoplankton’s seasonal dynamics, and also for the exact forecast related to beginning of phytoplankton’s spring blossoming in drinking reservoirs when planning water treatment actions.

scholarly journals Safety of Water Supply Systems and Wastewater Treatment of Industrial Enterprises

2016 ◽  
Vol 5 (5) ◽  
pp. 64-74
Author(s):  
Шилков ◽  
Vladimir SHilkov ◽  
Аникин ◽  
Yu. Anikin
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Water Supply ◽  
Integrated Approach ◽  
Water Supply Systems ◽  
Critical Systems ◽  
Basic Principles ◽  
Strategic Risk ◽  
Industrial Enterprises ◽  
Supply Systems

In this article, the necessity of integrated approach to the analysis and solution of problems of safety of water supply and wastewater treatment are declared. The results of the study the main problems of the systems of production of water supply and wastewater treatment are described. Practical measures for solving problems are proposed. Pressing need of application of means of informatization, strategic risk analysis methods and innovative technologies of water treatment are declared. The basic principles of safe and effective critical systems of water supply and wastewater treatment in the sphere of production are proposed.

scholarly journals MODERNIZATION OF WATER SUPPLY SYSTEMS FROM SURFACE SOURCES

2021 ◽  
pp. 74-83
Author(s):  
Victor Khoruzhy ◽  
Tetіana Khomutetska ◽  
Igor Nedashkovskіy
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Water Intake ◽  
Ecological Condition ◽  
Mineral Fertilizers ◽  
Water Supply Systems ◽  
Treatment Technologies ◽  
Treatment Facilities ◽  
Supply Systems

Surface water bodies, which are sources of drinking water supply, receive a significant amount of pollution from wastewater. This negatively affects the ecological condition of water resources and poses a threat to the health and sanitary well-being of the population. The main pollutants of surface sources are: sewage of economic-fecal and industrial sewage, which contain organic pollutants, surfactants, heavy metal ions; oil products coming from industrial sites and urban areas; effluents from livestock farms and storage ponds of production waste; washing of mineral fertilizers and pesticides from agricultural lands. Adjustment of surface springs additionally affects the deterioration of water quality in them. Therefore, existing water treatment technologies may not always provide the required degree of drinking water purification. According to monitoring studies, more than 38% of water samples taken at centralized water supply facilities did not meet regulatory requirements. This situation encourages the search for ways that would create conditions for more efficient operation of water supply systems. Modernization of existing water supply facilities and application of new water treatment technologies can help solve the problem. The article illustrates constructive schemes of shore and channel water intake and treatment facilities, the use of which makes it possible to reduce the dirt retention load on the main treatment facilities, increase the reliability of fish fry protection and improve the ecological condition of reservoirs at water intake sites. For effective removal of organic matter at water treatment plants, it is advisable to use bioreactors and contact-clarifying filters. Such solutions allow not only to increase the productivity of the water treatment plant, but also significantly reduce its construction cost, simplify the operation of facilities and reduce annual operating costs.

scholarly journals An Approach to Determine Risk Indices for Drinking Water–Study Investigation

2019 ◽  
Vol 11 (11) ◽  
pp. 3189 ◽  
Author(s):  
Janusz R. Rak ◽  
Katarzyna Pietrucha-Urbanik
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Quality Standard ◽  
Water Supply Systems ◽  
Raw Water ◽  
System Operation ◽  
Risk Indices ◽  
Physical And Chemical ◽  
Supply Systems

In accordance with the water quality standard, the safe functioning of the water treatment system operation is considered. This paper alludes to extreme situations, which arise where there is periodic deterioration of the quality of raw water, for which the technological process of water treatment is not prepared. A conception method is presented by which to assess indices of risk vis-à-vis drinking water, on the basis of a probability estimation methodology. The categorisation of water pipes in line with quality-reliability as regards the physical and chemical composition of drinking water or water intended for business purposes is proposed. An example of the method being put to use is also offered, and it is recognised how the approach being proposed could be the basis for further analysis that takes different conditions of functioning of water-supply systems into account.

scholarly journals The increasing efficiency of upflow clarifiers at the drinking water preparation

2020 ◽  
pp. 17-27
Author(s):  
Stanislav Dushkin ◽  
Serhii Martynov ◽  
Stanislav Dushkin
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Aluminum Sulfate ◽  
Sulfate Solution ◽  
Treatment Quality ◽  
Water Supply Systems ◽  
Technological Regime ◽  
Reagent Consumption ◽  
Concentrated Solution ◽  
Supply Systems

The article discusses the use of concentrated coagulant aluminum sulfate solution to increase the efficiency of upflow clarifiers for drinking water preparation. The water treatment using coagulants from roughly dispersed and colloidal contaminants is one of the most common methods. However, the reagent consumption is quite significant under adverse coagulation conditions (insufficient alkalinity, high chromaticity, and low water temperature), therefore this method requires improvement. It was established that the considered method for the increasing efficiency of upflow clarifiers of water supply systems at drinking water preparation by using the concentrated solution of aluminum sulfate coagulant can reduce the reagent consumption by an average of 15-20%, to improve the water treatment quality and to increase the treatment setups productivity. Therefore, the actual tasks are to study the features of the coagulation process and the influence of various factors for the natural water treatment quality and the scientific improvement and technological regime choice elaboration for water treatment in upflow clarifiers with the concentrated coagulant solution using.

scholarly journals Choice of a Mineral Sediments’ Inhibitor in Industrial Closed Water Supply Systems

2014 ◽  
pp. 92-99
Author(s):  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Water Supply Systems ◽  
Industrial Water ◽  
Closed Water ◽  
Supply Systems

Criteria for choosing agents based on organophosphonats for water treatment in the closed industrial water supply systems have been proposed. A method for determination of the agents optimal doze for decreasing of the mineral sediments quantity in different composition water has been developed. Economic and ecological expedience of the above said agents’ application in industrial water supply has been shown.

scholarly journals ANALYSIS OF TECHNOLOGICAL SOLUTIONS OF WATER SUPPLY SYSTEMS OF SINGLE-INDUSTRY TOWNS OF THE REPUBLIC OF KARELIA

2018 ◽  
Vol 8 (4) ◽  
pp. 29-36
Author(s):  
Arkady N. KIM ◽  
Elena O. GRAFOVA ◽  
Yury P. EFTIFEEV
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Water Consumption ◽  
Wash Water ◽  
Water Supply Systems ◽  
Water Treatment Plants ◽  
Single Industry ◽  
Reagent Treatment ◽  
The Republic ◽  
Supply Systems

On the example of single-industry towns of the Republic of Karelia the article shows the possibility of restoring the activities of enterprises depending on the state of engineering support of water supply systems. There was a decrease in water consumption, high wear of water treatment plants, the lack of reagent treatment of colored water and, as a result, ineffi cient operation of facilities. It is shown that the reconstruction is possible with the application of the investment program. Projects have been developed for the reconstruction of the technological scheme for purifying low-turbid, high-color water and creating a circulating system for cleaning the wash water of contact illuminators.

scholarly journals Ensemble Model Development for the Prediction of a Disaster Index in Water Treatment Systems

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3195
Author(s):  
Jungsu Park ◽  
Jae-Hyeoung Park ◽  
June-Seok Choi ◽  
Jin Chul Joo ◽  
Kihak Park ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Model Development ◽  
Principal Component ◽  
Heavy Rain ◽  
Coefficient Of Determination ◽  
Water Supply Systems ◽  
Public Data ◽  
Input Variables ◽  
Supply Systems

The quantitative analysis of the disaster effect on water supply systems can provide useful information for water supply system management. In this study, a total disaster index (TDI) was developed using open-source public data in 419 water treatment plants in Korea with 23 input variables. The TDI quantifies the possible effects or damage caused by three major disasters (typhoons, heavy rain, and earthquakes) on water supply systems. The four components (regional factor, risk factor, urgency factor, and response and recovery factor) were calculated using input variables to determine the disaster index (DI) of each disaster. The weight of the input variables was determined using principal component analysis (PCA), and the weights of the DI of three natural disasters and four components used to calculate the TDI were determined by the analytical hierarchy process (AHP). Specifically, two ensemble machine learning models, random forest (RF) and XGBoost (XGB), were used to develop models to predict the TDI. Both models predicted the TDI with the coefficient of determination and root-mean-square error-observations standard deviation ratio of 0.8435 and 0.3957 for the RF model and 0.8629 and 0.3703 for the XGB model, respectively. The relative importance analysis suggests that the number of input variables can be minimized, which improves the models’ practical applicability.

scholarly journals Evolution of water supplies in the Hellenic world focusing on water treatment and modern parallels

2020 ◽  
Vol 20 (3) ◽  
pp. 773-786 ◽  
Author(s):  
A. N. Angelakis ◽  
K. S. Voudouris ◽  
G. Tchobanoglous
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Bronze Age ◽  
Water Supply Systems ◽  
Urban Water ◽  
Urban Water Supply ◽  
Water Shortages ◽  
Water Supplies ◽  
Treatment Technologies ◽  
Supply Systems

Abstract Advanced, well organized, and operated urban water supply systems existed in Greece from the Bronze Age (ca. 3200–1100 BC). At the dawn of human history, surface water and groundwater, principally springs, were the most common water supply sources. As the population grew, periodic water shortages occurred. In Early Minoan times (ca. 3200–2100 BC), these water shortages led to the development of sophisticated hydraulic structures for importing water and for the harvesting and storage of rainwater. In addition, the water treatment technologies and water distribution techniques developed at that time served as the basis for the advanced technological progress in the development of the urban water supply systems in the centuries that followed. In this paper, an overview of the evolution of public water supplies and water treatment technologies in the Hellenic world through the centuries up to modern times is presented. Some of the most significant innovations in the provision of water, its treatment, and distribution are highlighted. The overview is followed by a discussion of the contemporary situation, emerging trends, and future challenges, and parallels are drawn between historical developments and the water supply problems faced today.

Technical auditing of water supply systems – part 2: water treatment plant

2017 ◽  
Vol 18 (4) ◽  
pp. 1141-1150
Author(s):  
Tomáš Kučera ◽  
Ladislav Tuhovčák ◽  
Renata Biela
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Supply Systems ◽  
Supply Systems

scholarly journals DEVELOPMENT AND IMPLEMENTATION OF HIGH-EFFICIENCY AND RESOURCE-SAVING TECHNOLOGIES FOR AGRICULTURAL WATER SUPPLY AND WASTEWATER DISPOSAL

2019 ◽  
pp. 140-145
Author(s):  
P. D. Khoruzhyi ◽  
E. M. Matseliuk ◽  
D. V. Charnyi
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Treated Wastewater ◽  
Water Supply Systems ◽  
Agricultural Water ◽  
Filter Materials ◽  
Water Transportation ◽  
Filter Loading ◽  
Agricultural Water Supply ◽  
Supply Systems

Introduction. Scientific support for measures aimed at providing centralized water supply to rural settlements has been entrusted to the Department of Agricultural Water Supply of UkrNIIGiM (now the Institute of Water Problems and Land Reclamation of NAAS) since 1991. The main task of this department of the institute was to develop scientific and technical solutions for reliable supply of all consumers in rural areas with water in the required quantity, of the proper quality and with the necessary free pressure while minimizing capital and operating costs, rational and economic use of water resources and environmental protection from pollution by the wastewaters. Suggested scientific approaches: - decentralization of the withdraw processes, purification, supply and distribution of water with the splitting into drinking and technological water; - reliable supply of high quality drinking water and technological water with low cost; - creation of closed water supply systems at agricultural enterprises with minimal consumption of fresh water and use of treated wastewater for technical needs or irrigation of agricultural crops, and sludge - for soils fertilizing; - development of new water treatment technologies based on the reproduction of intensified factors of the biogeochemical cycle of water in the course of its natural self-purification in order to reduce the cost of the water treatment process and increase the barrier capacity of existing structures. - reliable protection of territories against flooding by filtrated waters from reservoirs using these waters for agricultural water supply and irrigation; - optimization of the interoperability of all interacting structures with systems to minimize the per unit energy consumption for water transportation. Prospects. One of the main fundamental theoretical questions that need further development is new approaches to filtering theory. Since the time of D.M. Mintz this research direction have been stagnated. This is especially felt in domestic developments, despite the fact that there has been a significant breakthrough in the creation of filter materials (mainly in the case of filter materials that are lighter than water, which were not used at the time of D.M. Mintz). A breakthrough in the development of measuring apparatus has also taken place, and it now allows measuring the electrokinetic and dimensional characteristics of colloids in water source and filter loading grains, which makes it possible to consider the filtration process and especially the adsorption of colloids on the surface of filter loading grains from a different angle. Conclusions. The results of scientific researches carried out in the laboratory of agricultural water supply for 28 years of its existence, and were implemented at the existing local and group agricultural water supply systems. Materials of scientific researchers are published in 4 monographs and more than 100 articles and conference materials in domestic and foreign scientific journals. The proposed solutions are patented in 46 patents for inventions. Using the research of the laboratory staff, 3 doctoral dissertations (V.P. Khoruzhyi, V.G. Novokhatnii, and D.V. Charnyi) and 14 PhD theses were defended.  

Sign in / Sign up

Export Citation Format

Share Document