Encyclopedia entry
Geotextile behavior relevant to filtering low density suspended organic particles
ICG, International Conference on Geosynthetics, 8, pp.565-568
01 Jan 2006
Abstract
Three commercially available geotextiles, having different mass per unit areas, were evaluated for application as filters for stormwater and combined sewer overflow waste streams. Non-woven needle punched geotextiles were selected as the filter media because their fibrous structure provides the opportunity for both depth and cake filtration. Therefore, internal capture (in the pore channels), and external rejection (on the upstream face of the filter), of suspended solids was anticipated. A permittivity apparatus/filter prototype was constructed to determine both the average permittivities of each fabric and the capture and rejection potential of the candidates. Crushed anthracite was used as an analogue for waste water due to its similar characteristics (specific gravity of 1.35, inert nature, organic structure, amorphous shape). Several trials were run with the anthracite slurry through the prototype, and capture, rejection, filter efficiency, and reestablished permittivity values after sloughing were recorded. The results suggest that geotextiles are indeed viable as a filtration media for the intended application. Of the three candidates evaluated, the 8.5 oz/sy fabric outperformed the other two candidates in filtration efficiency (the most critical parameter), capture (mass treated per flow volume), and provided nearly twice the permittivity of the candidate with the nearest filtration efficiency.
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Details
- Title
- Geotextile behavior relevant to filtering low density suspended organic particles
- Creators
- R.J MarinoJ WaltonS.C ChengJ.P Martin
- Publication Details
- ICG, International Conference on Geosynthetics, 8, pp.565-568
- Conference
- ICG, International Conference on Geosynthetics, 8, 8th
- Publisher
- WTI-Frankfurt-digital GmbH
- Number of pages
- 1
- Resource Type
- Encyclopedia entry
- Language
- English
- Academic Unit
- [Retired Faculty]; Civil, Architectural, and Environmental Engineering; A.J. Drexel Autism Institute
- Identifiers
- 991019170329304721