scholarly journals RELIABILITY OF WATER TREATMENT FACILITIES ACCORDING TO OPERATING DATA

2021 ◽  
Vol 3 (163) ◽  
pp. 16-21
Author(s):  
V. Novokhatniy ◽  
S. Kostenko ◽  
O. Matyash ◽  
S. Sadoviy
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Operating Time ◽  
Water Source ◽  
Treated Water ◽  
Supply And Distribution ◽  
Main Indicator ◽  
Maximum Permissible Concentrations ◽  
Reliability Indicator ◽  
Average Operating Time

The centralized water supply system from the water source to the consumer includes 3 main complexes: water intake, water treatment and supply and distribution. The reliability of water supply in the area depends on the reliability of each of these complexes, which, in turn, consist of a number of structures. The paper develops the developed principle of assessing the reliability of water treatment plants (WPP) by quantitative indicators of the quality of treated water. The assessment of the reliability of the current WPP was performed to reflect its work, which implements the "black box" model. That is, some process parameters have one value at the input and other values at the output. The disadvantage of this method is that it is impossible to assess the reliability if the process does not occur. In addition, it is impossible to assess the reliability of the BOC for another set of individual structures. And the advantage is the sufficient simplicity of calculating the reliability indicator. Data on the purification of the Dnieper water at the Kremenchug WPP in terms of turbidity and chromaticity are used. Graphs of average variable indicators of turbidity and chromaticity of Dnieper water at the entrance of the WPP and graphs of exceedances of maximum permissible concentrations of treated water are constructed. The main indicator of reliability for municipal water supply facilities is the coefficient of readiness of KD, and the basic indicators of reliability are the average operating time for failure T and the average recovery time of the TR. The possibility of calculating the coefficients KD downtime and KR readiness in case of exceeding the MPC treated water is shown. After analyzing the graphs of water quality indicators, it was determined that the greatest turbidity and chromaticity of the Dnieper water is observed in the autumn.

scholarly journals Waterborne outbreaks in the Nordic countries, 1998 to 2012

2015 ◽  
Vol 20 (24) ◽  
Author(s):  
B Guzman-Herrador ◽  
A Carlander ◽  
S Ethelberg ◽  
B Freiesleben de Blasio ◽  
M Kuusi ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Distribution Systems ◽  
Water Source ◽  
Nordic Countries ◽  
Surveillance Systems ◽  
Water Supplies ◽  
Treatment Regimens ◽  
Supply And Distribution ◽  
Household Water

A total of 175 waterborne outbreaks affecting 85,995 individuals were notified to the national outbreak surveillance systems in Denmark, Finland and Norway from 1998 to 2012, and in Sweden from 1998 to 2011. Between 4 and 18 outbreaks were reported each year during this period. Outbreaks occurred throughout the countries in all seasons, but were most common (n = 75/169, 44%) between June and August. Viruses belonging to the Caliciviridae family and Campylobacter were the pathogens most frequently involved, comprising n = 51 (41%) and n = 36 (29%) of all 123 outbreaks with known aetiology respectively. Although only a few outbreaks were caused by parasites (Giardia and/or Cryptosporidium), they accounted for the largest outbreaks reported during the study period, affecting up to 53,000 persons. Most outbreaks, 124 (76%) of those with a known water source (n = 163) were linked to groundwater. A large proportion of the outbreaks (n = 130/170, 76%) affected a small number of people (less than 100 per outbreak) and were linked to single-household water supplies. However, in 11 (6%) of the outbreaks, more than 1,000 people became ill. Although outbreaks of this size are rare, they highlight the need for increased awareness, particularly of parasites, correct water treatment regimens, and vigilant management and maintenance of the water supply and distribution systems.

scholarly journals Conventional Water Treatment of Domestic Groundwater Supplies

2019 ◽  
Vol 27 (1) ◽  
pp. 354-365
Author(s):  
Hussein Hamid Emran Al-Husseini
Keyword(s):  
Water Treatment ◽  
Ground Water ◽  
Conventional Treatment ◽  
Treatment Plant ◽  
Correlation Coefficients ◽  
Water Treatment Plant ◽  
Water Source ◽  
Treated Water ◽  
Sulfate Removal

The important of ground water is increasing in the future as a source of fresh waters; in addition, many countries contain a number of water treatment plants to treat surface water. Using conventional treatment plant in the cities to treat ground water will decrease the cost of ground water treatment and may be help to depend on both surface and ground water supplies. This paper studied the ability of treating ground water by conventional water treatment. The quality of the ground water source is studied in the mention area during study period. The chemical quality of ground water is tested and there is within the standards of drinking water except iron.  The conventional treatment was enhancing quality of treated water by increment of dissolved oxygen concentrations toward optimum value. Water treatment plant was effective for removal of iron from ground water of about 50%, in addition there is an effect of conventional treatment on sulfate removal (sulfate may be increase above standards in some ground water sources). The statistical analysis of data shows there is a correlation between quality parameters of raw and treated water and between iron and sulfate of treated water in the correlation matrix. In addition, confidence test was applied on the correlation coefficients using fisher's transformation .The analysis shows, that there is a positive period (0.244, 0.941) of confidence of 95% of correlation factors of iron and sulfate.

Управление технологическими процессами на водозаборах г. Новокузнецка

2020 ◽  
Author(s):  
N. Dobrynina ◽  
O. Karkanitsa
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Water Purification ◽  
Water Source ◽  
Filter Material ◽  
Technical Condition ◽  
Maximum Efficiency ◽  
Automation System ◽  
Treatment Facilities ◽  
Processing And Storage

За последние годы на действующих водозаборах г. Новокузнецка реализован комплекс мероприятий с использованием современного оборудования и технологий, позволивших значительно повысить надежность и эффективность работы системы водоснабжения. Отмечено, что для достижения максимальной эффективности работы водоочистных станций необходимо постоянно совершенствовать технологию очистки воды. Самым приемлемым и экономичным решением этой задачи является исследовательская работа в технологической лаборатории Драгунского цеха водоснабжения. Изучены фильтрационные свойства материалов (керамзит, горелые породы, альбитофир, кварцит и др.), что позволило выбрать вид фильтрующего материала и определить его оптимальный фракционный состав для загрузки фильтров на водоочистных станциях. Определены наиболее эффективные реагенты для очистки воды источника водоснабжения города реки Томи. Это коагулянт оксихлорид алюминия и флокулянты катионного типа. Внедрение системы комплексной автоматизации технологического процесса позволило обеспечить контроль технического состояния оборудования и его технологических параметров, а также сбор, обработку и хранение данных.In recent years, a set of measures has been implemented at the operating water intakes of the city of Novokuznetsk using advanced equipment and technologies that have provided for improving the integrity and efficiency of the water supply system. It was noted that in order to achieve maximum efficiency of the water treatment facilities, continuous improving the technology of water purification is required. The most acceptable and economical solution to this problem is carrying out research works at the technological lab of the Dragun water supply facilities. The filtration properties of materials (expanded clay, burned rocks, albitophyre, quartzite, etc.) were studied that resulted in choosing the type of filter material and determining its optimal grain particle size for loading filters at the water treatment facilities. The most effective chemicals for water purification from the local water source, the Tom River, were identified. These are aluminum oxychloride coagulant and cationic flocculants. The introduction of a comprehensive process automation system provided for the control of the technical condition of the equipment and its process parameters, as well as for the data acquisition, processing and storage.

scholarly journals PERANCANGAN PILOT PLANT PENGOLAHAN AIR MINUM UNTUK ZONA PENDIDIKAN DAN RISET KAWASAN TECHNO PARK, KABUPATEN PELALAWAN

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Water Source ◽  
Regional Competitiveness ◽  
Human Needs ◽  
Supply Planning

Techno Park regional development in order to increase regional competitiveness based on innovation and knowledge (konwledge based economy) requires infrastructure that can meet basic human needs, such as drinking water supply for the community. Techno Park region Pelalawan, Riau province located in the peat so that most of the water source is brownish and contains peat. While surface water sources such as rivers Kampar located far from the region. Therefore, to overcome the problems of water supply for the people who will live in the region need to be prepared water supply planning. Early stages of development is focused on the areas of education and research zone so that planning for water supply will also be prioritized in both these zones. Has calculated the drinking water needs based on projected population and  water demand standard in these locations. Planning of water treatment plant will conduct  in  5 stages yearly so that development is more economic with design capacity of 5 l / sec in 2033. Alternative sources of raw water are from Kampar river or groundwater that is used if transmission pipeline from the Kapuas river has not ben constructed. Technology of drinking water treatment with ultrafiltration processes that are environmentally friendly will be applied to meet the water needs of society. Transmission pipelines is planned of 15 inches diameter laying in parallel with lane highway from Kampar River ( location intake BPAB ) to the water treatment plant in the education zone . Keywords : Techno park region, water supply planning, ultrafiltrasi, peat area.

APPLICATION OF SODA IN STABILIZATION WATER TREATMENT IN REVERSE CYCLES OF WATER SUPPLY OF GAS-CLEANED UNITS OF BOFS

2019 ◽  
pp. 51-60
Author(s):  
S.I. Epshtein ◽  
◽  
S.E. Nikulin ◽  
Yu.A. Shliakhova ◽  
A.I. Kondratenko ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply

Enhanced rapid gravity filtration and dissolved air flotation for pre-treatment of river thames reservoir water

1998 ◽  
Vol 37 (2) ◽  
pp. 35-42 ◽  
Author(s):  
M. J. Bauer ◽  
R. Bayley ◽  
M. J. Chipps ◽  
A. Eades ◽  
R. J. Scriven ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
21St Century ◽  
Reservoir Water ◽  
Dissolved Air Flotation ◽  
Lowland Rivers ◽  
Air Flotation ◽  
Pre Treatment ◽  
Counter Current ◽  
Dissolved Air

Thames Water treats approximately 2800Ml/d of water originating mainly from the lowland rivers Thames and Lee for supply to over 7.3million customers, principally in the cities of London and Oxford. This paper reviews aspects of Thames Water's research, design and operating experiences of treating algal rich reservoir stored lowland water. Areas covered include experiences of optimising reservoir management, uprating and upgrading of rapid gravity filtration (RGF), standard co-current dissolved air flotation (DAF) and counter-current dissolved air flotation/filtration (COCO-DAFF®) to counter operational problems caused by seasonal blooms of filter blocking algae such as Melosira spp., Aphanizomenon spp. and Anabaena spp. A major programme of uprating and modernisation (inclusion of Advanced Water Treatment: GAC and ozone) of the major works is in progress which, together with the Thames Tunnel Ring Main, will meet London's water supply needs into the 21st Century.

scholarly journals Addressing the challenges in projects of water treatment plants and storage of potable water: a case studies of the water supply system in the state of Goiás, Brazil

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Anne Louise de Melo Dores ◽  
Felipe Corrêa Veloso dos Santos
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water System ◽  
Treatment Phase ◽  
Water Treatment Plant ◽  
Operating Efficiency ◽  
Water Supply Systems ◽  
Storage Tanks ◽  
Variation Curve

AbstractTo elaborate efficient and economical water supply systems is one of the main objectives in the sanitation companies water system projects. In order to address the challenges faced in reaching this objective, this study aims to identify, first, the relation between the percentage of non-conformed samples in treated water and the inefficiency of the filtering units installed in the water treatment plant, and second, if, by drawing the consumption variation curve it is the most efficient way to predict the storage tanks volume—comparing necessary capacity, determined by the consumption curve, and installed capacity, predict by the outdated Brazilian normative. In order to reach answers for these two questions, this study measured the operating efficiency of the treatment plant as well as have set a quantitative comparison between the two dimensioning criteria for storage tanks volume present in the literature. As a result, the analysis provided the authors to detect a focus of contamination in the single-layered filtering units, limited by the filtering capacity of 2–6 m3/(m2 day), whilst operating at 333.13 m3/(m2 day). As well as to detect by the drawing of the consumption variation curve an oversize of 68% and 60% in the dimensioning of the studied storage tanks. With the results provided by this analysis approach, it was possible to efficiently detect and correct critical impairments in the treatment phase and to conclude that a long-term analysis should be drawn in order to affirm if the consumption variation curve is the best design methodology for the reservoirs.

Experiences with the practical implementation and operation of biological nitrification for a small-scale drinking water treatment plant

2016 ◽  
Vol 16 (4) ◽  
pp. 922-930 ◽  
Author(s):  
L. Richard ◽  
E. Mayr ◽  
M. Zunabovic ◽  
R. Allabashi ◽  
R. Perfler
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Drinking Water Supply ◽  
Small Scale ◽  
Treatment Performance ◽  
Biological Nitrification

The implementation and evaluation of biological nitrification as a possible treatment option for the small-scale drinking water supply of a rural Upper Austrian community was investigated. The drinking water supply of this community (average system input volume: 20 m3/d) is based on the use of deep anaerobic groundwater with a high ammonium content of geogenic origin (up to 5 mg/l) which must be treated to prevent the formation of nitrites in the drinking water supply system. This paper describes the implementation and operation of biological nitrification despite several constraints including space availability, location and financial and manpower resources. A pilot drinking water treatment plant, including biological nitrification implemented in sand filters, was designed and constructed for a maximum treatment capacity of 1.2 m3/h. Online monitoring of selected physicochemical parameters has provided continuous treatment performance data. Treatment performance of the plant was evaluated under standard operation as well as in the case of selected malfunction events.

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