DEWATERING SCREENS | FILTRATION SCREENS

Screen Systems manufacture dewatering screens, water recycling screens and filtration screens from stainless steel wedge wire. Due to their strength and self cleaning properties wedge wire screens are used in a variety of applications for the waste water industry as filtration screens and dewatering screens. Therefore, they are perfect for separation screening. Wedge wire screens are also low maintenance and can have a high open area which is beneficial for separation screening and filtration screening.

Dewatering, separation screening and filtration screening processes include, solid removal from process waste water, sewage treatment, diversion of water to keep solids from water sources ie. debris from streams and rivers. Storms and heavy rainfall have an impact of the transportation of water to waste water treatment plants. As a result this can cause the water to overflow and potentially become contaminated during transportation. In addition wedge wire screens can be used as diversion screens resulting in the water being filtered before reaching the plant.

APPLICATION OF DEWATERING SCREENS & FILTRATION SCREENS

Screen Systems manufacture a range of dewatering screens from stainless steel wedge wire. These are used in the water and waste water industry for separation screening and filtration screening. Also wedge wire is used for river intake screens, hydro screens and coanda screens. In addition to upward flow clarifiers, storm overflow screens, rainwater harvesting and many more.

Stainless steel wedge wire screens, for upward flow clarifiers, are used as a stand alone medium, however they can also be used as a support for a pea gravel bed. They have equally been successfully installed in existing humus tanks and new installations to remove suspended solids by flocculation and settlement. The majority of remaining solids caught in the narrowing zones of the wedge wire physically flocculate. Thereby increasing their settlement velocity and thus causing them to settle at the bottom of the tank.

upward flow wedge wire clarifier

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DESIGN OF DEWATERING SCREENS

Screen Systems wedge wire dewatering screens are available as flat screens, curved screens or cylindrical screens. Each application is purpose designed in-house to suit the flow rates and characteristics of the individual location. Also our dewatering, filtration and separation screens are available in mild steel, galvanised and stainless steel wedge wire. In addition we work together with our clients so we can incorporate a support structure which is low maintenance, cost effective and efficient.

BENEFITS OF DEWATERING SCREENS / FILTRATION SCREENS

  • Purpose designed
  • Inherent strength
  • Low Maintenance
  • Minimum downtime
  • Unaffected from UV light degradation
  • Long life expectancy

waste treatment

CASE STUDY – WELDED WEDGE WIRE TUBULAR FILTER

Screen Systems recently completed a project for a welded wedge wire stainless steel dewatering screen. It was a welded wedge wire tubular filter with a 1mm aperture x 12S B profile. It was created using Stainless steel 304 and also had external support rods, 12 SB at approx 12mm pitch plain cylinder.

CASE STUDY – DEWATERING SCREENS / WASH SCREENS FOR A COAL MINE

Screen Systems have recently completed a project with Hewitt Robins for two dewatering screeners / wash screeners for a coal mine. We manufactured the wedge wire dewatering screens to Hewitt Robins specification requirements, they then fitted the screens to their machines. The machines were sent on to their customer who was washing 30 tph of Anthracite. Both the screens and the machines were made to measure to the customer’s requirements.