✔ Removes large and fine solids before they enter the downstream processes
✔ Apply in municipal and industrial wastewater treatment systems
✔ Known for its static wedge wire design and low-maintenance operation
A Hydrosieve Screen (also known as a static wedge wire screen, parabolic screen, or sidehill screen) is a non-mechanical screening device used in wastewater treatment systems. It is built with a curved or parabolic stainless steel wedge wire panel that allows water to flow through precisely engineered slots while retaining solid particles.
Unlike rotary drum screens or bar screens, the hydrosieve has no moving parts. It relies entirely on gravity and hydraulic energy to separate solids from liquids. This makes it both energy-efficient and highly durable, requiring minimal maintenance.
Key features of hydrosieve screens include:
• Curved wedge wire screen surface for high screening efficiency.
• Stainless steel construction to resist corrosion in wastewater environments.
• Static operation: no motors, gears, or complex mechanical systems.
• Customizable slot sizes (typically 0.25 mm to 3.0 mm) depending on the required level of filtration.
• Compact design suitable for retrofitting into existing treatment facilities.
How Hydrosieve Screens Work
The working principle is simple yet highly effective. Wastewater is evenly distributed across the parabolic wedge wire screen surface. As water passes through the slots, suspended solids are retained and slide down due to gravity. The filtered liquid continues into the wastewater treatment system, while screened solids are collected for disposal or further processing.
Hydrosieve Screen Used across Wastewater Treatment Systems
1. Municipal Wastewater Treatment
Primary screening of sewage influent.
Removal of plastics, rags, paper, and organic matter.
Pretreatment before sedimentation tanks and biological processes.
2. Industrial Wastewater Treatment
• Food and Beverage: separation of fruit peels, vegetable pulp, and organic residues.
• Dairy Industry: removal of fats, proteins, and fibrous particles.
• Breweries: separation of hops, spent grains, and yeast solids.
• Textile Industry: capturing lint, fibers, and dye-laden solids.
• Pulp and Paper Mills: fiber recovery and wastewater screening.
• Chemical & Pharmaceutical Plants: pretreatment of complex effluents.
3. Sludge Thickening and Recovery
Used as a pre-thickening device for sludge management.
Efficiently reduces water content in sludge before further processing.
4. Aquaculture and Agriculture
Screening of fish farm effluents.
Separation of solids in irrigation water recycling systems.
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