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Issue 15 (4) 2016 pp. 421-438

Marcin Spychała, Maciej Pawlak, Tadeusz Nawrot

Poznan University of Life Sciences

CAPACITY OF TEXTILE FILTERS FOR WASTEWATER TREATMENT AT CHANGEABLE WASTEWATER LEVEL – A HYDRAULIC MODEL

Keywords: hydraulic capacity; hydraulic conductivity; septic tank effluent; textile filters for wastewater treatment
Abstract:

The aim of the study was to describe in a mathematical manner the hydraulic capacity of textile filters for wastewater treatment at changeable wastewater levels during a period between consecutive doses, taking into consideration the decisive factors for flow-conditions of filtering media. Highly changeable and slightly changeable flow-conditions tests were performed on reactors equipped with non-woven geo-textile filters. Hydraulic conductivity of filter material coupons was determined. The dry mass covering the surface and contained in internal space of filtering material was then indicated and a mathematical model was elaborated. Flow characteristics during the highly changeable flow-condition test were sensitivity to differentiated values of hydraulic conductivity in horizontal zones of filtering layer. During the slightly changeable flow-conditions experiment the differences in permeability and hydraulic conductivity of different filter (horizontal zones) height regions were much smaller. The proposed modelling approach in spite of its simplicity provides a satisfactory agreement with empirical data and therefore enables to simulate the hydraulic capacity of vertically oriented textile filters. The mathematical model reflects the significant impact of the filter characteristics (textile permeability at different filter height) and operational conditions (dosing frequency) on the textile filters hydraulic capacity.

pub/15_4_421.pdf Full text available in in Adobe Acrobat format:
http://www.formatiocircumiectus.actapol.net/volume15/issue4/15_4_421.pdf

DOI: 10.15576/ASP.FC/2016.15.4.421

For citation:

MLA Spychała, Marcin, et al. "CAPACITY OF TEXTILE FILTERS FOR WASTEWATER TREATMENT AT CHANGEABLE WASTEWATER LEVEL – A HYDRAULIC MODEL." Acta Sci.Pol. Form. Cir. 15.4 (2016): 421-438. http://dx.doi.org/10.15576/ASP.FC/2016.15.4.421
APA (2016). . Acta Sci.Pol. Form. Cir. 15 (4), 421-438 http://dx.doi.org/10.15576/ASP.FC/2016.15.4.421
ISO 690 SPYCHAłA, Marcin, PAWLAK, Maciej, NAWROT, Tadeusz. CAPACITY OF TEXTILE FILTERS FOR WASTEWATER TREATMENT AT CHANGEABLE WASTEWATER LEVEL – A HYDRAULIC MODEL. Acta Sci.Pol. Form. Cir., 2016, 15.4: 421-438. http://dx.doi.org/10.15576/ASP.FC/2016.15.4.421
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Streszczenie w języku polskim:
http://www.formatiocircumiectus.actapol.net/tom15/zeszyt4/abstrakt-421.html