Mathematical Model for Clarifying Low-Concentration Suspension by Dissolved Air Flotation

Haiduchok, O.; Syrovatsky, O.; Karahiaur, A.; Kostenko, S.

doi:10.1007/978-3-030-42939-3_7

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…І, накінець, в Україні питання надійності як споруд водопостачання, так і систем водопостачання у цілому не находять свого теоретичного вирішення за необхідності використання високого математичного апарату та відповідного рівня фахівців. Існують тільки рішення окремих питань, які свідчать про постійний інтерес до проблеми надійності [5][6][7][8][9][10][11][12][13] фахівців з водопостачання. За кордоном дані питання отримали набагато більше кінцевих рішень, про що свідчить видання навіть довідника [14,15].…”

Section: аналіз останніх дослідженьunclassified

Reliability of Water Treatment Facilities According to Operating Data

Novokhatniy

Kostenko

Matyash

et al. 2021

MEC

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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.

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Section: аналіз останніх дослідженьunclassified

Reliability of Water Treatment Facilities According to Operating Data

Novokhatniy

Kostenko

Matyash

et al. 2021

MEC

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“…Water treatment from surface sources occurs according to various technological schemes. Still, the most common scheme for plant with productivity of 30000 m 3 /day is a two-stage scheme with a horizontal settling tank in the first stage and rapid sand filters in the second stage [1,[3][4][5]. Settling tanks, alternatively known as sedimentation basins or clarifiers, are spacious containers where water is directed to move at a gradual pace, encouraging the settling of particles or flocs [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental research of combined horizontal settling tank for drinking watersupply

Epoyan,

Airapetian,

Haiduchok

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Nowadays, the war in Ukraine brings not only material and human losses, but also significant environmental damage. The full-scale Russian invasion of Ukraine led to serious environmental consequences for the country’s northern, southern and eastern regions. Water treatment from surface sources occurs according to various technological schemes. Still, the most common scheme for water treatment plant with productivity of 30,000 m3/day or more is a two-stage scheme with a horizontal settling tank in the first stage and rapid sand filters in the second stage. Disadvantages of horizontal settling tank are uneven water distribution across the sump, longitudinal circulation, an insufficiently efficient drainage system for clarified water, and unsatisfactory operation at low temperatures. To intensify the operation of horizontal settling tanks, we proposed next solution: to place thin-layer continuous settlers with countercurrent water movement at the beginning of the sedimentation zone. Such an arrangement makes it possible to retain suspended particles at the facility’s beginning, reduce the mud load on the horizontal settler and increase the water velocity in thin-layer settlers. This research aims to intensify the operation of horizontal settling tanks and improve the quality of water clarification. Experimental studies of the combined horizontal settling tank design were conducted. It shows the efficiency of its work, improving the quality of water treatment.

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The issues of technological modeling of physicochemical iron removal from deep groundwater at the rapid filter

Poliakov,

Martynov

2024

IOP Conf. Ser.: Earth Environ. Sci.

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An exact solution to the task of physicochemical iron removal from natural water containing excess iron ferric form at the rapid filters is presented in the article. The principles of applied optimization of filters for iron removal are formulated based on technical and economic calculations. Three filter control algorithms are described and technological modeling of its operation is performed throughout the service life of the filter medium when implementing a regular algorithm. The impact of the main design parameter on the economic indicators and, first of all, the reduced costs is analyzed. The possibility of minimizing the cost of water treatment through a reasonable choice of the packed bed height has been demonstrated.

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Mathematical Model for Clarifying Low-Concentration Suspension by Dissolved Air Flotation

Cited by 4 publications

References 3 publications

Reliability of Water Treatment Facilities According to Operating Data

Reliability of Water Treatment Facilities According to Operating Data

Experimental research of combined horizontal settling tank for drinking watersupply

The issues of technological modeling of physicochemical iron removal from deep groundwater at the rapid filter

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