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Laboratory studies on granular filters and their relationship to geotextiles for stormwater pollutant reduction

Paul, Parneet; Tota-Maharaj, Kiran


Parneet Paul

Kiran Tota-Maharaj


Applications of geotextiles within tertiary stormwater treatment systems and for stormwater infiltration can provide a substrate for biofilm formation, enabling biological treatment of contaminants. Geotextiles can serve as an efficient part of stormwater filtration within the urban water environment. The project assessed the applications of three experimental granular filters as a sustainable urban drainage system (SUDS) for the decomposition of organic pollutant loading present in stormwater. The three filter rigs were packed with alternating layers of filter media consisting of gravel, pea gravel, sand and either a single, double or no layer of geotextile membrane. A nonwoven geotextile was layered within the filter media. The hydraulic loading capacity for the three filters matched that commonly used with conventional sand filters systems. Water quality parameters were quantified by measuring suspended solids, chemical oxygen demand, dissolved oxygen, pH, nitrate-nitrogen, and phosphate concentrations. It was found that Filter Rig No. 3 (upper and lower geotextile membrane) and Filter Rig No. 2 (single geotextile membrane) had a significant statistical difference in treatment performance from Filter Rig No. 1 (no geotextile membrane).


Paul, P., & Tota-Maharaj, K. (2015). Laboratory studies on granular filters and their relationship to geotextiles for stormwater pollutant reduction. Water, 7(4), 1595-1609.

Journal Article Type Article
Acceptance Date Apr 2, 2015
Online Publication Date Apr 15, 2022
Publication Date Apr 15, 2015
Deposit Date Mar 27, 2019
Journal Water (Switzerland)
Electronic ISSN 2073-4441
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 7
Issue 4
Pages 1595-1609
Keywords adsorption, biofilm, geomembrane, sustainable urban drainage system (SUDS), stormwater harvesting
Public URL
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