This paper presents the results of a study of four full-scale upflow gravel filters that are part of full-scale multi-stage filtration. The study explored the design criteria, the operation and maintenance (O&M) practices, and the performance of the systems. Findings showed that most design criteria and O&M procedures are following the recommendations as presented in the literature but several diversions were also identified. Performance data showed that removal efficiencies were on the low side when compared to the literature, possibly because of the good influent quality water that was treated. Cleaning efficiency was analyzed and the overall conclusion is that an adjustment of the design criteria and O&M procedures is needed to enhance system performance. This includes drainage system design, surface cleaning by weir, and filter bed cleaning to allow a reduction in cleaning cycles and an improvement in operation control.
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Research Article|
November 08 2014
Performance of upflow gravel filtration in multi-stage filtration plants
L. D. Sánchez;
1Universidad del Valle, Facultad de Ingeniería, Instituto Cinara, Cali, Colombia
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J. T. Visscher;
J. T. Visscher
2JTF-Rotterdam BV, Rotterdam, The Netherlands
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L. C. Rietveld
L. C. Rietveld
3Delft University of Technology, P.O. Box 5084, Delft GA 2600, The Netherlands
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Water Sci Technol (2015) 71 (4): 605–614.
Article history
Received:
July 31 2014
Accepted:
October 28 2014
Citation
L. D. Sánchez, J. T. Visscher, L. C. Rietveld; Performance of upflow gravel filtration in multi-stage filtration plants. Water Sci Technol 1 February 2015; 71 (4): 605–614. doi: https://doi.org/10.2166/wst.2014.452
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