Hydro-Sludge Screen Systems with Control Panels
Industrial water treatment Water and wastewater treatment

Hydro-Sludge Screen

Remove, compact and dewater solids from sludge to cut maintenance, reduce handling costs and increase biosolids value.

The Hydro-Sludge® Screen is a superior sludge screening solution for municipal and industrial applications, delivering better performance and easier maintenance.

Designed to remove rags and dry solids from primary, secondary, or combined wastewater sludge, it protects, reduces blockages and increases the efficiency of downstream treatment processes such as anaerobic digesters.

The Hydro-Sludge® Screen removes, compacts and dewaters solids from municipal and industrial wastewater sludge to reduce handling costs, increase the calorific value of biosolids and improve overall treatment efficiency.

A small-footprint, low-maintenance system designed to work early in the sludge management process, the Hydro-Sludge® Screen can handle dry solids of up to 9% and delivers screenings at up to 40% total solids—enabling engineers, operators and owners to protect valuable equipment, reduce blockages and increase the efficiency of downstream treatment processes such as anaerobic digesters.

The Hydro-Sludge® Screen generates a drier output that is easier and cheaper to handle and transport, whether for disposal or as a higher-value biosolids product for energy generation and other secondary processes.

Industrial applications

Visit our industrial microsite to learn how products like the Hydro-Sludge™ Screen can help industrial businesses.

Improve downstream process efficiency

Offering a range of screen sizes, the Hydro-Sludge® Screen reduces loading on downstream processes and improves overall treatment effectiveness. Able to handle a dry solids capacity of up to 9%, the equipment removes solids early on in the sludge management process, minimizing the clogging that would otherwise reduce subsequent treatment efficiency.

Cut maintenance costs

With an easy-maintenance standard design and optional enhanced maintenance package, Hydro-Sludge® Screen has been developed with the operator's needs in mind. A self-lubricating cone cuts maintenance requirements, and a re-engineered discharge section provides easy-access servicing, making routine inspection, cleaning and maintenance activities quick, simple, and safe.

Save money on solids handling

Delivering screenings at 40% total solids, the Hydro-Sludge® Screen removes, compacts, and dewaters coarse material in sludge to reduce the solids handling burden, cutting the cost of screened solids management, transport, and disposal.

Reduce operational costs

The Hydro-Sludge® Screen reduces the dewatering required for screenings – cutting handling costs.

Watch a Video showing how Hydro-Sludge® Screen works

  1. Flow enters through the center of a sludge inlet (red arrow).
  2. Sludge passes through the perforation and exits via the sludge outlet (blue arrow), the screenings become trapped inside.
  3. A rotating screw moves the screenings off the inside of the drum to the pressing zone.
  4. The coarse screenings are retained on the stainless steel inner screen surface and then transported to the stainless steel pressing zone and onward to the pressing zone by an Archimedean screw.
  5. In the pressing zone the screenings are pressed against a retention cone which is balanced against the drive load of the screw.
  6. Dewatered screenings are discharged by gravity via the screenings outlet (brown arrow).


Hydro-Sludge Screen - how it works

Dry solids capacity and flow rate

% Dry Solids Content - gpm (L/s)

  • 0-1% - 660 gpm (42 L/s)
  • 2% - 485 gpm (31 L/s)
  • 3% - 420 gpm (26 L/s)
  • 4% - 350 gpm (22 L/s)
  • 5% - 330 gpm (21 L/s) 
  • 6% - 310 gpm (19 L/s)
  • 7% - 265 gpm (17 L/s)
  • 8% - 240 gpm (15 L/s)
  • 9% - 220 gpm (14 L/s)

Dewatering capability output

40% total solids.

Technical specifications

  • 3-10 mm diameter screen perforations
  • Fully automatic operation - continuous or intermittent screening
  • Cast iron or stainless steel fabrication options

  • Hydro-Sludge Screens side view
  • Hydro-Sludge Screen and control panels
  • Hydro-Sludge Screen drive motors
  • Hydro-Sludge Screen Discharge end
  • Hydro-Sludge screen systems being installed
  • Long view Hydro-Sludge Screen systems
  • Side view of Hydro-Sludge Screen systems
  • Hydro Sludge Screens on elevated platform
  • Multiple Hydro-Sludge Screen systems

Parts & Spares

Keep your Hydro International water management systems running effectively and efficiently. Our services teams will supply you with…

Get Cleaner Sludge

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