Technological model of water contact iron removal

• Autorzy: Martynov S. , Fylypchuk V. , Zoshchuk V. , Kunytskyi S. , Safonyk A. , Pinchuk O.

Identyfikatory

DOI

10.2478/jwld-2018-0063

Warianty tytułu

PL

Technologiczny model usuwania żelaza z wody metodą kontaktową

• Języki publikacji: EN

Abstrakty

EN

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.

PL

Do odżelaziania wód podziemnych stosowane są różne typy filtrów, jednym z nich są filtry ze spienionego polistyrenu. W zależności od składu chemicznego wody, jej przeznaczenia i warunków pracy filtrów należy określić dokładny rozmiar ziaren, skład granulometryczny, grubość warstwy filtrującej i odpowiednie tempo filtracji. Tego rodzaju problemy są wieloczynnikowe, a ich rozwiązanie opiera się na modelowaniu matematycznym. Podczas usuwania żelaza z wody gruntowej w filtrach z reguły bierze się pod uwagę dwa równoległe procesy – efektywność uzdatniania wody i wzrost strat w głowicy. Dlatego opracowany model usuwania żelaza z wody oparty jest na dwóch podstawowych blokach: oświetleniowym – uwzględnia się bilans materiałowy i kinetykę procesu; bloku hydrodynamicznym – opisującym dynamikę spadku ciśnienia w ziarnistym wypełnieniu. Kinetyka zatrzymywania związków żelaza w ziarnistym wypełnieniu składa się z dwóch przeciwnych procesów. Wraz ze wzrostem ilości osadu adsorpcyjnokatalitycznego wzrasta też szybkość sorpcji związków żelaza i utleniania żelaza dwuwartościowego, a także zwiększa się skuteczność usuwania żelaza. Z drugiej strony, w warunkach malejącej porowatości wypełnienia, wzrasta rzeczywista prędkość płynu, co zmniejsza intensywność adhezji związków żelaza. Zbudowany model matematyczny pozwala na określenie optymalnych wartości parametrów strukturalnych i technologicznych dla filtrów usuwających żelazo z uwzględnieniem specyfiki warunków filtracji.

Słowa kluczowe

EN

foam polystyrene filter; iron removal; mathematical model; underground water; water treatment technology

PL

filtry ze spienionego polistyrenu; model matematyczny; odżelazianie; technologia uzdatniania wody; wody podziemne

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2018
• Tom: no. 39
• Strony: 93--99
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Martynov S.

• National University of Water and Environmental Engineering, Department of Water Supply, Water Disposal and Drilling Engineering, Ukraine

autor

Fylypchuk V.

• National University of Water and Environmental Engineering, Department of Labour Security, Health and Safety, Ukraine

autor

Zoshchuk V.

• National University of Water and Environmental Engineering, Department of Labour Security, Health and Safety, Ukraine

autor

Kunytskyi S.

• National University of Water and Environmental Engineering, Department of Science and Research, Ukraine

autor

Safonyk A.

• National University of Water and Environmental Engineering, Department of Automation, Electrical and Computer-Integrated Technologies, Ukraine

autor

Pinchuk O.

• National University of Water and Environmental Engineering, Department of Hydroinformatics, 11 Soborna St., Rivne, 33028, Ukraine

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