Laboratory and numerical experiments into efficient management of VDR filter plants

• Autorzy: Zielina M. , Dąbrowski W. , Mackie R. I.

Identyfikatory

DOI

10.5277/epel50308

• Języki publikacji: EN

Abstrakty

EN

runs are achieved when the highest flow through the most recently backwashed filter and the highest available head loss coincide. This rule has previously been published by Dąbrowski, who used a simplified mathematical model of VDR filters developed by Di Bernardo. However, until now no experimental verification of this optimisation approach has been presented. A series of tests were carried out on a laboratory VDR filter plant, using a suspension collected from an industrial sedimentation tank and using alum as a coagulant. The results of the experiments were compared with computations carried out according to a combined unit bed element (UBE)-phenomenological model of deep bed filtration adapted to VDR operation by Mackie and Zhao. It was confirmed that the longest filtration runs did indeed correspond to the pairs of the highest H and q1/qavr. The UBE-phenomenological model of deep bed filtration gave results of computations quite close to experimental results and improved the accuracy of calculations based on the theoretical model by Di Bernardo.

Słowa kluczowe

EN

filters; environmental engineering; waste management; deep bed filtration; efficient management; numerical experiments; phenomenological modeling; mathematical model; theoretical modelling

PL

filtry; inżynieria środowiska; gospodarowanie odpadami; filtracja wgłębna; sterowanie efektywne; eksperymenty numeryczne; modelowanie fenomenologiczne; model matematyczny; modelowanie teoretyczne

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2015
• Tom: Vol. 41, nr 3
• Strony: 101--120
• Opis fizyczny: Bibliogr. 18 poz., tab., rys.

Twórcy

autor

Zielina M.

• Environmental Engineering Department, Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow

autor

Dąbrowski W.

• Environmental Engineering Department, Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow

autor

Mackie R. I.

• School of Engineering, Physics and Mathematics, University of Dundee, Dundee DD1 4HN, U.K.

Bibliografia

• [1] DI BERNARDO L., Designing declining-rate filters, Filtr. Separat., 1987, 24 (5), 338.
• [2] MACKIE R.I., DABROWSKI W., ZIELINA M., Numerical study of a rational rule for the operation of variable declining rate filters in response to changes in raw water quality, Environ. Prot. Eng., 2003, 29 (1), 45.
• [3] ZIELINA M., DĄBROWSKI W., Impact of raw water quality on operation of variable declining rate filter plants, Environ. Prot. Eng., 2011, 37 (2), 133.
• [4] HILMOE D.J., CLEASBY J.L., Comparing constant-rate and declining-rate direct filtration of a surface water, JAWWA, 1986, 78 (12), 26.
• [5] CLEASBY J.L., DI BERNARDO L., Hydraulics considerations in declining rate filtration, J. Environ. Eng. Div., 1980, ASCE 106 (EE6), 1043.
• [6] DĄBROWSKI W., The progression of flow rates in variable declining rate filter systems, Acta Hydroch. Hydrob., 2006, 34 (5), 442.
• [7] DĄBROWSKI W., Investigations into variable declining rate filters, Cracow University of Technology, Cracow 1994.
• [8] DĄBROWSKI W., Rational operation of variable declining rate filters, Environ. Prot. Eng., 2011, 37 (4), 35.
• [9] MACKIE R.I., ZHAO Q., A framework for modelling removal in the filtration of polydisperse suspension, Water Res., 1999, 33 (3), 794.
• [10] DĄBROWSKI W., MACKIE R.I., ZIELINA M., Filtrate quality from different filter operations, Acta Hydroch. Hydrob., 2003, 21 (1), 25.
• [11] LIU S., MASLIYJAH J.H., Single fluid flow in porous media, Chem. Eng. Commun., 1996, 148 (1), 653.
• [12] DĄBROWSKI W., Hydraulic properties of deposit in coarse sand, Arch. Hydroeng., 1993 (1/2), 135.
• [13] DĄBROWSKI W., Observations of deposit compressibility impact on head losses of flow through granular filter media, Proceedings of the 2nd European Conference on Filtration and Separation, 12–13 October 2006, Compiegne, France, 191.
• [14] DĄBROWSKI W., SPACZYŃSKA M., Empirical investigations into the impact of deposit dislodgment on modeling of deep bed filtration, Proceedings of the 2nd European Conference on Filtration and Separation, 12–13 October 2006, Compiegne, France, 104.
• [15] ZIELINA M., Experimental research into depth filtration of polydispersed suspension, Environ. Prot. Eng., 2007, 33 (2), 249.
• [16] DĄBROWSKI W., Consequences of the mass balance simplification in modelling deep bed filtration, Water Res., 1988, 22 (10), 1219.
• [17] KŁOS M., TOKARCZYK J., Modernization of coagulation and filtration systems in surface water treatment plants, Ochr. Środ., 2005, 27 (3), 61.
• [18] ZIELINA M., HEJDUK L., Measurement of the efficiency of depth filters for water treatment, Filtration, 2007, 7 (3), 225.