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The Aqua-Filter™ Stormwater Filtration System is designed for sites that require advanced treatment of runoff stormwater that may discharge into sensitive receiving waters.
The Aqua-Filter™ is not only unique because of its modular design, and HDPE construction, but also because of the ease of installation. The system can be designed for new construction projects or be retrofit for existing storm drainage structures.
Performance testing is a normal part of our quality assurance program. Third party testing has demonstrated TSS removals of greater than 80% and the effective removal of additional pollutants including hydrocarbons (i.e. light and heavy oils and grease), phosphorus, and various heavy metals (i.e. copper, zinc). |
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System Operation |
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Each Aqua-Filter™ system is custom engineered and utilizes a unique approach for pollutant removal. This patented configuration begins with the removal of gross pollutants by the Swirl Concentrator, followed by the removal of fine sediments and water-borne pollutants by the Filtration Chamber.
The Aqua-Filter™ System is engineered such that the filtration capacity complies with established water quality treatment requirements. This means that the system filters the initial movement of fine sediment pollutants that can be particularly harmful.
 The Aqua-Filter™ Stormwater Filtration System operates under gravitational and hydrodynamic forces with no moving parts or valves, which simplifies the treatment process. The Aqua-Filter™ System also normally operates in an off-line configuration as recommended by the Center for Watershed Protection and most municipalities; fully treating the more frequent 6-month to 1-year design storms (or roughly 90% - 95% of the annual rainfall on a given site).
The Aqua-Filter™ systems unique treatment method is illustrated in the drawing shown below and described in the following steps.
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Step 1. - Pre-treatment
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Peripheral pretreatment of contaminated stormwater is not necessary when using the Aqua-Filter™ Stormwater Filtration System. In fact, each Aqua-Filter™ system is custom engineered to utilize a unique treatment sequence where both the course and fine pollutants are removed.
This sequence begins with the Swirl Concentrator designed to target the removal of Total Suspended Solids (TSS), and free-floating oil and debris. The addition of the Swirl Concentrator allows for larger debris to settle before filtration and increases filtration effectiveness.
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Step 2. - Filtration
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The filtration chamber in the Aqua-Filter™ System is designed to refine and enhance the stormwater quality prior to discharge into sensitive receiving waters. The peak filtration flow rate is based on the calculated water quality treatment requirements desired for the site. The Sizing Chart provided in the catalog indicates the peak filtration flow rate for the specific Aqua-Filter™ model.
As the pre-treated water enters the filtration chamber, it is evenly distributed across the filter bed and allowed to permeate through the filter media. The filter media are contained in individual containers, which are layered in a pattern to avoid short-circuiting.
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Filter Media
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The natural filter media, used for the filtration, are capable of removing the remaining water-borne pollutants such as dissolved oils, fine silts and clays, nutrients (phosphates), and heavy metals (zinc). The most commonly used media is medium grain perlite. Other filter media, such as zeolite and granulated activated carbon are available.
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