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Address	2733 Kanasita dr. Suite B, Chattanooga, TN 37343
Contact Person	J. Kelly Williamson
Telephone Number	423 870 8888
General Contaminents	Stormwater
Contaminent 1/Concentration Range
Contaminent 2/Concentration Range
Contaminent 3/Concentration Range
Net Beneficial Effect
Number of Field Applications
Remediation Media
Verification Date	01/20/05
Technology Description The Aqua-Swirl Concentrator has been designed to capture sediment, free-oil, and floatable debris. The Aqua-Filter Stormwater Filtration System has been designed to remove or eliminate fine sediment, nutrients, metals, and other pollutants. The Aqua-Swirl Concentrator, with a conveyance flow diversion system, allows simple installation by connecting directly to the existing storm conveyance pipe and provides full treatment of the "first flush" or the determined water quality flow while the peak design storm is diverted and channeled through the main conveyance pipe. The Aqua-Filter Stormwater Filtration System is designed for sites that require advanced treatment of stormwater runoff discharging to sensitive receiving waters. The Aqua-Filter™ Stormwater Filtration System is a stand-alone custom engineered two-component structure, which utilizes a "treatment-train" approach for stormwater pollutant removal. This patented configuration begins with a Swirl Concentrator (using vortex enhanced sedimentation technology) designed for pre-treatment of stormwater runoff followed by a Filtration Chamber (using media filtration technology) capable of removing finer sediments and water-borne pollutants.
Limitations Factors Causing Under-Performance If the Aqua-Swirl™ Concentrator and Aqua-Filter™ Stormwater Filtration System are designed and installed correctly, there is minimal possibility of failure. There are no moving parts to bind or break, nor are there parts that are particularly susceptible to wear or corrosion. Lack of maintenance may cause the system to operate at a reduced efficiency, and it is possible that eventually the system will become totally filled with sediment. Pollutant Transformation and Release The Aqua-Swirl™ Concentrator and the Aqua-Filter™ Stormwater Filtration System should not increase the net pollutant load to the downstream environment. However, pollutants may be transformed within the unit. For example, organic matter may decompose and release nitrogen in the form of nitrogen gas or nitrate. These processes are similar to those in wetlands but probably occur at slower rates in the Aqua-Swirl™ Concentrator and Aqua-Filter™ Stormwater Filtration System due to the absence of light and mixing by wind, thermal inputs and biological activity. Accumulated sediment should not be lost from the system at or under the design flow rate.
Safety Considerations
Verification Fact Sheet Technical Performance Claims Claim 1: The Aqua-Swirl Concentrator, Model AS-3, has been shown to have a total suspended solids (TSS) removal efficiency (as measured as suspended sediment concentration (SSC)) of 60% when operated at 60% of its water quality treatment flow using OK-110 unground silica with a d50 particle size of 110 microns, an average influent concentration of 320 mg/L and zero initial sediment loading in laboratory studies using simulated stormwater. Addendum • Replacing Claim 2 in the Technology Verification Report with a new Aqua-Filter™ coarse perlite media filtration cartridge claim that when used with the previously certified NJDEP Aqua-SwirlTM Concentrator claim and the New Jersey Stormwater Best Management Practices Manual approach for calculating treatment train removal efficiency results in a calculated 84.6% TSS removal efficiency for the Aqua-Filter™ Stormwater Filtration System.
Technology Catagory	STORMWATER
Passive
State	TN
Country	United States