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Filter Press

Reduce your solids dewatering costs and solid waste volume

Quickly transform your fluid waste stream into a solid state that will pass the slump test. Filter Presses consistently transform a liquid solution containing 2% to 5% suspended solids into solid sludge cakes with 30% to 35% solids content for easy disposal. Paired with a ConRec sludge dryer, your filter press is an important step in achieving Zero Liquid Discharge (ZLD).

Minimize operator attention and let gravity do the work for you. Positioned over your dryer, your press will automatically unload sludge cakes when the press cycle is complete.


Designed for long-term rugged use

With built-in fail-safe technology, ConRec filter presses withstand the harshest environmental conditions:

  • Heavy-duty welded cold rolled steel or stainless steel frame
  • Durable hydraulic pumps and cylinders
  •  Stainless steel rail caps for rugged use
  • Two coats of corrosion-resistant epoxy paint
  • Gasketed or non-gasketed one-piece molded polypropelene corrosion-resistant filter plates
  • Patented follower tail plate swivel joint for precise alignment
  • Semi-automatic plate shifters
  • Pump pressure control system (PPCS)
  • Sludge removal hoppers
  • Safety features: splash guards and light curtains available


Filter Press

Designed and built to match your process:

Your filter press is factory-tested, pre-set, and customized to match your process.  We guarantee that your filter press fits perfectly by adjusting: size, leg length, hydraulic system and controlled pumping.

Size: Batch volume can range from half of a cubic foot to 100 cubic feet.

Plate sizes: Selection of plate is based on your waste volume  and operating objectives , ranging sizes from 470 mm to 1500 mm.

Leg extensions: Conveniently  lift your press above your sludge dryer, disposal drum or roll-off containers with  stanchions.

Hydraulic closure: Larger presses are equipped  with  a proprietary automatic hydraulic pump powered by plant compressed air, complete with  an air filter, regulator and lubricator for smooth operation. Small presses with  smaller batch loads can operate with  manual hand-pump hydraulics.

Controlled pumping: Pump Pressure Control System (PPCS) systems  initially gently feed sludge, coating the cloth with  a thin even layer of solids. Feed pressure is increased in steps to ultimately fill the cavity between the plates with firm, solid filter cake.
The press reaches its maximum pressure at 80 PSI. Controlled escalation of sludge feed pressure delivers efficiency and prevents cloth plugging.

Filter Press

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 Solids Dewatering Technologies

Sludge Dryer




Sludge dryers are designed to match your filter press capacity, giving you an efficient semi-continuous  batch process. Its compact and customized build minimizes both floor  space requirement and operator interference. Sludge falls directly from the filter press into your dryer, minimizing handling and exposure to hazardous waste.

Liquid Crystallizer

  Slurry + Catwalk


Perfect for low-volume, corrosive liquid solutions, ConRec Liquid Crystallizers quickly remove moisture content, leaving behind crystallized salts for disposal. With a trustworthy design used in the industry for over 25 years, the liquid crystallizer eliminates contaminated haulage and disposal costs

Perma-Disc Filter

PermadiscPerma-Disc performs like a large sand filter – except at a much reduced capital cost and a fraction of the size. The small, wheeled filter, pump & platform assembly is portable, easy to install in tight areas, and filters flows of  up to 16,000 gallons per hour. Small package, huge performance!


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