A simulation study of surface water purifying through a polystyrene foam filter

Martynov, Sergiy; Kunytskiy, Sergiy; Орлова, А. М.

doi:10.15587/1729-4061.2017.109841

Cited by 13 publications

(8 citation statements)

References 13 publications

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“…Foam polystyrene filters with upflow filtration have been investigated for a long time in the laboratory of the department of water supply, drainage and drilling at the National University of Water and Environmental Engineering [6,20].…”

Section: Methodsmentioning

confidence: 99%

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Groundwater treatment using polystyrene foam filters with upflow filtration

Martynov,

Orlova,

Zoshchuk

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The groundwater is less susceptible to anthropogenic influence and the water quality of these sources is more stable. At the same time, the groundwater often has an increasing iron concentration. Despite the sufficient availability of proven methods for iron removal from water, it becomes necessary to search for more resource and energy saving technologies which is due to the constant rise in the cost of resources for the construction and operation of water treatment plants. The aeration methods for the iron removal from groundwater are often used, as cheaper ones. The polystyrene foam filters with upflow filtration are of particular interest, as the most reliable in operation among the developed types of filters with floating medium. A further reduction the cost of water is possible by using granules of foam polystyrene obtained by a production method, which ensures an increased grain size in comparison with the traditional method of their obtaining. The positive experience in such filters implementation allowed to recommend the placement of iron removal equipment in the existing water towers.

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Section: Methodsmentioning

confidence: 99%

“…The type of filtration medium, parameters of its grains and layer height have a significant impact on the efficiency of water treatment, size of filtration units and their productivity. The polystyrene foam is one of the economically suitable medium [6,20].…”

Section: Introductionmentioning

confidence: 99%

Groundwater treatment using polystyrene foam filters with upflow filtration

Martynov,

Orlova,

Zoshchuk

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…The first process is the main and second is the accompanying. Therefore, the model of water iron removal should base on two main blocks: clarifying (deformation) block takes into account the material balance and the kinetics of the process; hydrodynamic (filtration) block describes the dynamics of head loss in the granular downloading [MARTYNOV et al 2017].…”

Section: Methodsmentioning

confidence: 99%

“…Among the directions of research on intensifying the work of filtering structures, it is necessary to highlight the development of improved mathematical models and methods of calculation, and, first of all, the use of computer technologies [ATTOUI et al 2016;IVANCHUK et al 2017;MARTYNIUK et al 2018;MARTYNOV et al 2017;ORLOV et al 2016c: VLASYUK et al 2017.…”

Section: Introductionmentioning

confidence: 99%

Technological model of water contact iron removal

Martynov

Fylypchuk

Zoshchuk

et al. 2018

Journal of Water and Land Development

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Different types of filters are used to remove iron from underground water, one of them is foam polystyrene. Depending on the chemical water composition, tasks for water supply and other working conditions of iron-removing filters, it is necessary to define an exact grain size, specific granulometric composition, the thickness of the layer and the adequate rate of filtration. This kind of problems is multifactorial and its solution is based on the mathematical modelling.As a rule, two parallel processes considered during iron removal of underground water in filters: efficiency of water treatment and growth of head losses. Therefore, the model of water iron removal based on two main blocks, clarifying block takes into account the material balance and kinetics of the process; hydrodynamic block describes the dynamics of head loss in the granular loading. The kinetics of the detention of iron compounds in granular loading consists of two mutually opposite processes. With an increase of the amount of adsorption-catalytic precipitate, the rate of sorption of iron compounds and oxidation of ferric iron increases and the efficiency of iron-removing increases. On the other hand, with decreasing porosity of loading the true velocity of the fluid increases, that reduces the intensity of adhesion of iron compounds.Developed mathematical model allows for determining optimal values of structural and technological parameters of iron-removing filters taking into consideration the specific filtering conditions.

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“…Відповідно, впровадження заходів, які здатні захистити діючі технологічні споруди від потрапляння на них значних мас фітопланктону, є актуальною задачею, яка може бути вирішена за допомогою фізико-механічних чинників. До них належать зернисті попередні фільтри [1][2][3][4][5][6], які затримують фітопланктон за рахунок адсорбційної здатності фільтрувального завантаження.…”

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Results of the evaluation of the semi-empirical model on the selection of optimal constructive and technological parameters for a granulated loading filter

Charnyi

Matseliuk

Onanko

2020

LRaWM

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Topicality. A survey of the water use system at a state-owned enterprise processing agricultural products revealed the technological processes that cause biofouling of pipelines by colloidal inclusions (mainly phytoplankton conglomerates of blue-green algae). The implementation of measures that can protect existing technological structures against the ingress of significant masses of phytoplankton is an urgent task that can be solved with the help of mechanical filters. The efficiency of previous granulated loading filters depends very much on the properties of the filter loading. When filter loading is made of foamed polystyrene granules of food brands, phytoplankton retention is quite effective due to the physical adsorption of cyanobacteria conglomerates on the surface of these granules. Research results. By applying the semi-empirical model developed in IWPLR of NAAS, the optimal design and technological parameters of the filter with foam polystyrene loading were selected. That enabled to develop the design of a clarifying filter - a phytoplankton retainer for the treatment of circulating water at the enterprise Chervonoslobidsky distillery. In the lower part of the filter the lower drainage system in the form of a false bottom is placed, equipped with hole caps. It provides the source water entry for filtration and discharge of flush water during filter washing. The granules of the filter loading are kept from floating with the false bottom of the upper drainage, which is equipped with return filters - hole caps. Filtered water is collected in the abovefiltering space between the false bottom and the upper part of the filter body, from where it is delivered through a pipeline to the consumers. The application of the developed filter design allows reducing the construction costs and simplifies the filter design, which in turn increases its reliability and overall service life. The practical application of this filter provided the required degree of retention of cyanobacteria cells and conglomerates from the treated water. This filter design differs from the standard with a 1.5 times increased filter loading layer. This enabled to double the duration of a filter cycle and, at the same time, did not increase the volume of flushing water, i.e. operating costs. Conclusions. Based on the results of the developed semi-empirical model, the design and technological parameters of granular filters for recycling of wastewater from the distilleries were determined, which became the basis for developing a new filter design for water purification from cyanobacteria cells and colonies. The high efficiency of the developed design of the clarifying filter - phytoplankton retainer was experimentally proved. The use of the developed filter increases the economic efficiency of the circulating use of the wastewater from Chervonoslobidsky distillery by 1.3 - 1.5 times compared to the market offers of mechanical filters.

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A simulation study of surface water purifying through a polystyrene foam filter

Cited by 13 publications

References 13 publications

Groundwater treatment using polystyrene foam filters with upflow filtration

Groundwater treatment using polystyrene foam filters with upflow filtration

Technological model of water contact iron removal

Results of the evaluation of the semi-empirical model on the selection of optimal constructive and technological parameters for a granulated loading filter

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