Want to learn more about Permapave? Please click on the link below to download a PDF data sheet that includes some facts, and technical specs about Permapave. Installation instructions for Permapave's pavers are included as well.
Permapave Stormwater Filtration Grates
Permapave Stormwater Filtration Grates are uniquely designed and comply with standards for metal access covers, road grates and frames.
Permapave Stormwater Filtration Grates filter 100% of gross pollutants and when used in conjunction with a Permapave curbside or footbath bioretention system filters up to 60% of Phosphorus, 70% of Heavy Metals, and 98% of Hydrocarbon from stormwater, provided grates are cleaned prior to saturation.
Permapave Stormwater Filtration Grates provide a safe non-slip transition across the stormwater entry pit. Grate surface is safe for pedestrians, even with high heels, cyclists, rollerbladers, and skateboarders.
Installation of Permapave Stormwater Filtration Grates have an immediate and long-term impact on stormwater purity, resulting in an immediate reduction in contaminants. Cleaning is easy with the vacuum extraction cleaning machines. Contaminants are captured, collected and removed to an appropriate disposal site. The frequency of cleaning varies depending on location of installation.
Permapave Contaminant Filtration System
Contaminant filtration enables stormwater runoff to dissipate through permeable or porous substrate and filter through selected filtration media, such as natural sub-grade or sand. It is returned to watercourses as 100% pure, clean water, recharging depleted ground water supplies in the process.
Large pavement areas, such as shopping malls, parking garages and roadways create the largest stormwater pollution problems. Contaminant bio-retention systems utilizing Permapave technology can be installed in any area, without the loss of land.
How it Works
Pits dug across the water flow or at the low point of pavement areas, are filled with appropriate filtration media. Permapave structural grates or pavers are installed as pit covers, returning land to normal use. Stormwater runoff passes through the grates or pavers into the pit; gross pollutants are restricted to the surface and micro-pollutants are trapped within the permeable mass of the grate or paver. Remaining contaminants are trapped within the filtering media, leaving only pure water to drain from each pit, recharging depleted ground water.
Permapave entry grates and pavers can be cleaned when required and the contaminated filtration media can be removed and deposited at an appropriate site.
