Manufacturer: Kristar

Product: FloGard Dual Vortex Hydrodynamic Separator

The FloGard Dual-Vortex Hydrodynamic Separator is certified as an off-line system only.
Model / Diameter (ft) / Treatment Flow Rate (NJCAT) / Gallons per minute / HLR (gpm/sf)
DVS-36 / 3 / 0.4 / 180 / 25.4
DVS-48 / 4 / 1 / 449 / 35.72
DVS-60 / 5 / 2 / 898 / 45.72
DVS-72 / 6 / 3.4 / 1526 / 28.27
DVS-84 / 7 / 5.4 / 2424 / 62.98
DVS-96 / 8 / 8 / 3591 / 71.43
DVS120 / 10 / 15.6 / 7002 / 89.15
DVS-144 / 12 / 27 / 12118 / 107.15

The FloGard Dual Vortex Separator is a hydrodynamic treatment system for stormwater runoff in which the internal dual vortex separators are used to remove sediments from tunoff. The separators are designed to function in stages, with the first separator treating low flows and the second separator becoming active as flows increase. At peak flow, an in-line bypass allows any excess flow to bypass through the treatment system, thereby preventing backup of stormwater, while at the same time leaving accumulated materials undisturbed.

The vortex separators themselves consist of cylindrical tubes, extending downwardly from the pass-through member through a central platform to a debris holding reservoir below the platform. A first weir at its base directs the initial, low flow to the first passageway, thus carrying first flow stormwater to the first of the two vortex separators. A second weir, taller than the first, directs overflow from the first weir to a second transport passageway to the second vertically oriented vortex separator. When flows from storm runoff increase beyond the capacity of the two separators, water will flow over the second weir, thereby continuing through the assembly without decreasing the treatment flow rate or re-entraining captured pollutants, and exit into the storm drain system for discharge or treatment. The capacity of the pass-through member must be equal to or larger than that of the drainage pipe supplying the system, to prevent possibility of backup.

Available Options:

  • Removable internals – internals can be installed at the precasters location, or they can be installed after the device has been installed.
  • Square configurations are available to accept multiple inlet pipes or other special site conditions
  • Flume inlet control for grated inlet applications

Construction:

The FloGard Dual Vortex Separator is constructed of durable stainless steel and fiberglass components installed in a reinforced concrete structure. All internal parts are easy to install and may be removed in the field through a 48” self lifting access lid for easy, complete cleaning access.

Manufacturer: Kristar

Product: Up-Flo Filter Stormwater Treatment System

The Up-Flo Filter Stormwater Treatment System is sold by both Kristar and Hydro International

The Up-Flow Filter is a passive subsurface filtration system that can be retrofitted into an existing storm drain manhole or supplied as a complete system housed in a 4 ft. diameter manhole or precast vault. The vaulted systems are designated to house multiple platforms each having one to six filter modules. It is designed with a treatment train concept that incorporates gravitational separation of floating and setting materials, screening and filtration of stormwater flows.

Stormwater enters the chamber via an inlet pipe or inlet grate and fills the chamber, as flow is directed up through the angled screen and Filter Modules.

Gross debris and sediment settle out in the sump. Oil and floatables rise to the surface of the water.

Treated water flows out of the Filter Module to the Outlet Module and into the outlet pipe.

Excess flows are discharged to the outlet using a Siphonic Bypass, which also acts as a floatables baffle preventing the escape of oil and floatable trash.

To guard against pollutant leaching and filter media degradation between storm events, water drains out of the chamber through the filtered DrainDownPort as the storm subsides.

Filter Media available:

  • Hydro Filter Sand
  • Perlite
  • CPZ Mix
  • CPS Mix

Model / Chamber Size (ft) / Number of Modules / Typical Treatment Flow (cfs) / Peach Siphonic Bypass Flow (cfs) / Maximum Pipe Diameter / Minimum Standard Headloss (in) / Minimum Oil Storage Capacity (gal) / Sump Storage Capacity (cu yds)
1 ring (standard manhole) / 4 round / 1 - 6 / 0.33 / 6 / 15 / 19.5/29.5 / 50 / 0.9
2 ring (vault) / 6 x 2 (typ) * / 7 - 12 ** / 0.66 / 12' / 24 / 19.5/29.5 / 120 ++ / 2.7
3 ring (vault / 7 x 16 (typ) * / 13 - 18 ** / 1 / 18' / 36 / 19.5/29.5 / 180 ++ / 4
* size may vary
** vault configurations may also include an internal bypass weir for additional bypass capacity
++ may vary with chamber dimensions

Advantages:

  • Available in manhole, vault and retrofit configurations
  • Higher flow capacity resulting in smaller systems
  • Includes 4mm pre-screening
  • Variety of media options
  • Patented drain down prevents media degradation
  • Long media life and maintenance cycle
  • Easy installation and maintenance

Manufacturer: Kristar

Product: FloGard Perk Filter Media Filtration Device

Note: Must change or perform maintenance on filters every 10 months

The Perk Filter is a storm water filtration device used to reduce pollutant loadings in runoff from urban developments. A wide variety of filter medium is available to target specific pollutants of concern. The Perk Filter is available in multiple configurations, including catch basins, vaults and manholes, allowing the specifier maximum design flexibility.

The Perk Filter is manufactured from durable polymeric components with a polymer-coated steel support screen and stainless steel hardware. Its base construction allows use with a wide variety of media chosen to address site-specific pollutants of concern.

Perk Filters may be installed as a retrofit to suitable existing catch basins, or supplied as an integral part of a coated steel-or concrete-housed system. Modular system design provides flexibility of use, ease of maintenance and economy.

Stackable Cartridge Design
Cartridge Height / Treatment Flow Rate
Inches / WA DOE / Standard
12 / 6.8 / 12
18 / 10.2 / 18
24 / 13.6 / 24
30 / 17 / 30

See Drawings Below to get an idea of how they are designed, depths, head loss, etc. These drawings are only a sampling of what is available on the website.