Leopold FilterWorx gravity media filtration system is designed for water and wastewater treatment, desalination pretreatment, and water reuse. Removes particulates, turbidity, organics, iron, manganese, and nutrients. Suitable for new or existing installations with multiple underdrain and media options.

  • Gravity media filter for potable water, wastewater, desalination pretreatment, and biologically active filtration
  • Removes particulates, turbidity, organics, iron, manganese, total suspended solids, ortho-phosphorus, nitrate, and silt
  • Compatible with water-only, sequential air/water, and concurrent air/water backwash methods
  • Works with flat bottom, front, centre, and H-flume types
  • Automatic, manual, or semi-automatic control systems
  • Choice of underdrains: Type XA, Type S, Type S Recycled Materials, Type SL
  • Media options include silica sand, high density sand, anthracite, granular activated carbon, and expanded clay
  • Meets AWWA, ASTM, and British DWI standards

Applications

  • Potable drinking water treatment
  • Tertiary wastewater treatment
  • Nutrient removal in water or wastewater
  • Reverse osmosis membrane desalination pretreatment
  • Water reuse
  • Biologically active filtration (BAF)

Materials

Media made from silica sand, high density sand, anthracite, granular activated carbon, expanded clay

Backwash troughs made from densely laminated fibreglass-reinforced plastic

Mounting brackets, hardware, and stabilisers made from stainless steel

Options and variations

Underdrain types: Type XA, Type S, Type S Recycled Materials, Type SL

Media support: graded gravel, I.M.S 200 media retainer, I.M.S 1000 media retainer

Trough types: fibreglass, stainless steel, with optional stainless steel media retention baffles

Valve actuators: electric, pneumatic, hydraulic

Control system: automatic, manual, semi-automatic

Performance

Removes particulates, turbidity, organics, iron, manganese, total suspended solids, ortho-phosphorus, nitrate, silt, TOC

Backwash methods: water only, sequential air followed by water, concurrent air/water, sustained air/water

Engineered filter media with uniformity coefficients below 1.30

Product accreditations

Conforms to AWWA, ASTM, and British DWI standards

Installation

Suitable for new or existing installations regardless of current underdrain type

Flat-bottom flume reduces excavation and support requirements

Maintenance

Backwash process designed to restore head loss and maximise filter runs while minimising power use and wastewater generation

Technical support

Engineering support for system analysis, evaluation, and design