Investigating biomass formations at different depths in a slow sand filter

• Autorzy: Demir N.M. , Atci E.B. , Demir S. , Karadeniz A.
• Języki publikacji: EN

Abstrakty

EN

A laboratory-scale slow sand filtration (SSF) system was used to investigate biomass formation in different depths of SSF depending on various operating conditions in regard to filtration rate and influent iron-manganese concentrations. Results suggest that biomass formation occurs mainly in the uppermost 1.5 cm of the filter bed with slight contributions from layers between 1.5 cm and 14.5 cm. The highest volatile solids (VS) accumulation was observed in the uppermost layer as 16.93±0.07 mgVS/g dry sand, and the accumulation was found to be a function of both filtration rate and influent iron-manganese concentrations. Hydraulic conductivities were tested as a measure of biomass formation. The highest initial value of hydraulic conductivity was measured as 13.7 μm/s, while the lowest values ranged from 3.28 to 6.62 μm/s at the end of 55 days of operation. Hydraulic conductivities of the upper layers decreased quickly with time, while slight reductions were observed in hydraulic conductivities of the lower layers.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2018
• Tom: 27
• Numer: 4
• Opis fizyczny: p.1463-1474,fig.,ref.

Twórcy

autor

Demir N.M.

• Environmental Engineering Department, Faculty of Civil Engineering, Yildiz Technical University, 34220 Esenler, Istanbul, Turkey

autor

Atci E.B.

• Environmental Engineering Department, Faculty of Civil Engineering, Yildiz Technical University, 34220 Esenler, Istanbul, Turkey

autor

Demir S.

• Environmental Engineering Department, Faculty of Civil Engineering, Yildiz Technical University, 34220 Esenler, Istanbul, Turkey

autor

Karadeniz A.

• Environmental Engineering Department, Faculty of Civil Engineering, Yildiz Technical University, 34220 Esenler, Istanbul, Turkey

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Identyfikatory

DOI

10.15244/pjoes/76793