To control and capture pollutants common to buildings with metal roofs, downspout filtration provides an efficient and cost effective solution. Along with metal roofs, many buildings have rooftop equipment that could contribute to metals and oils runoff where downspout filtration is the answer.
If you’re looking for an unobtrusive stormwater filtration system with a small footprint, consider the CleanWay® downspout unit. Along with an attractive and compact design, these systems are easy to install and with direct access into the unit, taking test samples and performing maintenance is a breeze.
Available in standard or custom configurations, downspout filtration systems can be connected on the right or left side, depending on your site.
Select from a variety of tested, highly specialized media combinations to capture pollutants of concern. We work with you to identify the right media blend to help meet your site’s specific water quality objectives.
How they work
Downspout filtration systems consist of three major components: the primary rigid strainer, the absorption media section, and the downspout system housing.
- A primary rigid strainer constructed of a perforated material with surface area that accommodates flows rated at 125% of the flow of the basin prior to installation.
- The absorption media section incorporates a flexible open mesh fabric envelope containing a specialized media blend. This envelope is suspended from the support assembly and fitted into the basin in such a way that all influent passes through it before exiting and entering the downstream conduit. The combination of gross solids removal via the strainer and the absorption / filtration function of the media section reduce TSS and other pollutants.
- This envelope is suspended from the support assembly and fitted into the basin in such a way that all influent passes through it before exiting the filtration unit and entering the downstream conduit.
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