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 performance verified by the New Jersey Department of Environmental Protection, as well as numerous other stormwater regulatory agencies.

The Jellyfish Filter is a stormwater quality treatment technology featuring high surface area, high flow rate membrane filtration, at low driving head. By incorporating pretreatment with light-weight 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 backwashing, and rinseable/reusable cartridges ensures long-lasting performance.

• 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 pushed down below the cartridge deck where a separation skirt around the cartridges directs 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 and 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.
• After every storm peak, 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 located outside the backwash pool enables water levels to balance.

Jellyfish Filter Features and Benefits

Features

1. High surface area, high flow rate membrane filtration

2. High design treatment flow rate per cartridge (up to 80 gpm (5 L/s))

3. Low driving head (typically 18 inches or less (457 mm))

4. Lightweight cartridges with passive backflush

5. 3rd party verified field performance per TARP protocol

Benefits

1. Long-lasting and effective stormwater treatment

2. Compact system with a small footprint, lower construction cost

3. Design Flexibility, lower construction cost

4. Easy maintenance and low life-cycle cost

5. Superior pollutant capture with confidence

Jellyfish Filter Approvals

The Jellyfish Filter is approved through numerous state and federal verification programs, including:

• New Jersey Corporation for Advanced Technology (NJCAT) - Field Performance Verification per TARP Tier II Protocol
• Washington State Department of Ecology (TAPE - CULD)
• Maryland Department of the Environment (MD DOE)
• Canada ISO 14034 Environmental Management - Environmental Technology Verification (ETV)
• Texas Commission on Environmental Quality (TCEQ)
• Virginia Department of Environmental Quality (VA DEQ)

The Jellyfish Filter can be can be configured in a variety of systems; manhole, catch basin, vault, fiberglass tank, 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.

• Commercial and residential development, infill and redevelopment and stormwater quality retrofit applications
• Highways, airports, seaports and military installations
• Pretreatment for Low Impact Development, infiltration, and rainwater harvesting and reuse systems

• Jellyfish Filter cartridges are light weight, 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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