Jellyfish® Filter Stormwater Treatment
The Jellyfish Filter is a stormwater quality treatment technology featuring high flow pretreatment and membrane filtration in a compact stand-alone system. Jellyfish removes floatables, trash, oil, debris, TSS, fine silt-sized particles, and a high percentage of particulate-bound pollutants; including phosphorus, nitrogen, metals and hydrocarbons. The Jellyfish Filter has been tested in the field and laboratory, and is approved by the Washington State Department of Ecology (TAPE) GULD - Basic, Phosphorus, as well as numerous other stormwater regulatory agencies.
The Jellyfish filter - Setting New Standards in Stormwater TreatmentThe Jellyfish Filter is a stormwater quality treatment technology featuring high surface area and high flow rate membrane filtration at a low driving head. By incorporating pretreatment with lightweight membrane filtration, the Jellyfish Filter removes a high level and a wide variety of stormwater pollutants. The high surface area membrane cartridges, combined with up-flow hydraulics, frequent passive backwashing, and rinseable/reusable cartridges, ensure long-lasting performance.
How the Jellyfish Filter Treats Stormwater - Stormwater enters the Jellyfish through the inlet pipe or inlet grate, builds driving head, and traps floating pollutants behind the maintenance access wall and below the cartridge deck.
- Water is conveyed below the cartridge deck where a separation skirt around the cartridges isolates oil, trash and debris outside the filtration zone, allowing sand-sized particles to settle in the sump.
- Water is directed to the filtration zone and up through the top of the cartridge into the backwash pool. Once the water has filled the backwash pool, clean water overflows the weir where it exits via the outlet pipe.
- The membrane filters provide a very large surface area to effectively remove fine sand and silt-sized particles, and a high percentage of particulate-bound pollutants such as nitrogen, phosphorus, metals, and hydrocarbons while ensuring long-lasting treatment.
- As influent flow subsides, the filtered water in the backwash pool flows back through the hi-flo membrane cartridges into the lower chamber. This passive backwash extends cartridge life, keeping the membrane clean for future events.
- The draindown cartridge(s) located outside the backwash pool enables water levels to balance.
Jellyfish Filter Features and BenefitsFEATURES
High surface area membrane filtration
High design treatment flow rate per cartridge (up to 80 gpm (5 L/s))
Low driving head (typically 18-21 inches or less
(457-533 mm))
Lightweight cartridges with passive backwash
BENEFITS
Low flux rate promotes cake filtration and slows membrane occlusion
Compact system with a small footprint, lower construction cost
Design Flexibility, lower construction cost
Easy maintenance and low life-cycle cost
Jellyfish Filter Performance Testing ResultsPollutant of Concern
Total Suspended Solids (TSS)
Total Phosphorus (TP)
Total Copper (TCu)
Total Zinc (TZn)
% Removal
85%
75%
67%
60%
Select Jellyfish Filter Certifications - Washington State Department of Ecology (TAPE) GULD - Basic, Phosphorus
- New Jersey Corporation for Advanced Technology (NJCAT)
- Virginia Department of Environmental Quality (VA DEQ)
- Texas Commission on Environmental Quality (TCEQ)
- Canada ISO 14034 Environmental Management - Environmental Technology Verification (ETV)
- Philadelphia Water District (PWD)
- Maryland Department of the Environment (MD DOE)
- Virginia Department of Environmental Quality (VA DEQ)
Jellyfish Filter ConfigurationsThe Jellyfish Filter can be can be configured in a variety of systems; manhole, catch basin, vault, or custom configuration. Typically, 18 inches (457 mm) of driving head is designed into the system. For low drop sites, the designed driving head can be less.
Jellyfish Filter Maintenance - Jellyfish Filter cartridges are lightweight, easy to use, and reusable
- Maintenance of the filter cartridges is performed by removing, rinsing and reusing the cartridge tentacles.
- Vacuum extraction of captured pollutants in the sump is recommended at the same time.
- Full cartridge replacement intervals differ by site due to varying pollutant loading and type, and maintenance frequency. Replacement is anticipated every 2-5 years.
- Contech has created a network of Certified Maintenance Providers to provide maintenance on stormwater BMP’s.
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