Performance of an oil interceptor incorporated into a pervious pavement

Abstract

The use of pervious pavements is an important technique used for source control in sustainable drainage systems (SUDS) that allows water to infiltrate into hard surfaces and then slowly releases it to either a drainage outlet or into the ground. SUDS also remove low levels of pollution from the water by filtration and biodegradation of hydrocarbons that are adsorbed to materials within the construction. Current pervious pavement systems are not used in locations where the risk of pollution occurring is high or if they would allow the infiltration of water into the ground where groundwater protection is a concern. This paper describes trials of an oil interceptor that can be incorporated within pervious surface construction. The testing was undertaken to assess how the system retains pollution within it under simulated worst credible pollution and rainfall events. The results demonstrated that it can effectively contain hydrocarbon and metal pollution thus providing improved water quality. The water that flows out of the system has 50 times less oil pollution than the requirements specified for a Class 1 oil interceptor, when lubricating oil is applied to the surface. The water quality is over ten times better than the specified requirement when diesel is applied. Where detergents may be present they can cause minor contamination of the outflow waters and secondary treatment may be required.

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

“…Due to many economic advantages, construction waste bricks are cheaper than other alternative adsorbents, such as activated carbon, natural and synthetic zeolites, and ion exchange resins. Wilson et al showed that concrete blocks, crushed stone beds, and geotextiles in the permeable paving system can retain hydrocarbon contaminants and improve the quality of effluent [4]. Wang et al confirmed that using construction wastes as bioretention media can remove 90% of heavy metals in rainwater [1].…”

The Fate of Pollutants in Porous Asphalt Pavements, Laboratory Experiments to Investigate Their Potential to Impact Environmental Health

“…After the initial 3 months, the oil and RS were applied to the test rig surface at monthly intervals at rates of 25 mL/m (using a calibrated syringe) and 21 g/m respectively. The oil volume was well in excess of that reported by [ 16 ] as typically associated with storm water runoff (<0.1 g/L) and the RS used was double that reported by [ 17 ] of up to 12.6 g/m from a “dirty” road; this value has also been used in previous laboratory simulation experiments [ 18 ]. At the end of the monitoring period, a total of 367.5 g RS and 430 mL oil had been applied, thus representing a worst-case scenario, probably reflecting a highly contaminated industrial or heavily trafficked site.…”