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Tame Demanding Industrial Wastewater Solids

4-HYDRO open-channel, dual-shafted, wastewater grinders operate at slow speed using high torque to reduce the size of damaging industrial process solids. These powerful open-channel grinders are designed to protect downstream equipment, like pumps, valves, centrifuges and heat exchangers from damaging and clogging by large solids.

The 4-HYDRO grinder uses a standard 10 hp motor to power its way through large and challenging solids in the industrial wastewater stream. This ensures optimum process efficiency and reduces the need for unscheduled equipment maintenance, while improving solids recovery and dewatering.

Typical applications include:

  • Drill cuttings
  • Oil sands processing
  • Petroleum processing
  • Pulp and paper mills
  • Chemical plants
  • Fish/beef/poultry processing
  • Manure
  • Recycling plants
3-Hydro C Site


  • Prevents unplanned equipment maintenance and process downtime
  • Protects pumps, valves, centrifuges and other downstream equipment from damage and clogs requiring costly repairs
  • Preconditions sludges, slurries and waste materials for improved solids recovery and dewatering


  • Dual-shafted, slow-speed, high-torque grinder easily shreds the toughest solids, including rocks, wood, plastic, animal waste, plant waste and other debris
  • Compact footprint allows installation within most wastewater channels
  • Smart controller with load sensing control system optimizes performance and protects against jams
  • Custom frames for easy channel installation
  • Hardened steel cutters resist corrosion and wear
  • Various cutter configurations and materials are available to optimize the grinder performance by specific application
  • Global motor and controller options meet local energy efficiency and regulatory requirements
  • Immersible motors available to support application-specific operating conditions


  • Flow rates from 915 – 2,100 gpm (207 – 477 m3/hr)
  • Cutting chamber lengths 18 – 32 inches (457 – 813 mm)
  • 10 hp (7.5 kW) motor