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Zero Liquid Discharge

Meet your water recycling goals with ZLD technologies that maximize recovery and minimize waste

Water is a precious and scarce resource. Protect the value in your water by reusing over 95% of your wastewater and reducing liquid waste volume. Kontek’s sludge dryers, liquid crystallizers and filter presses effectively minimize waste. 


Contact our sales team at: 1-877-332-8366, or email.


  • Consistently meet strict compliance discharge levels with reliable equipment
  • Target, recover and reuse specific contaminants with ion exchange
  • Significantly reduce sludge and slurry waste disposal costs with solids dewatering equipment
  • Efficiently treat and recycle process wastewater
  • Minimize labour costs with self-protecting and automated system safety features
  • Maintain a safe work environment while promoting environmental stewardship

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Blue ZLD1Process Complete



Black tanks

  • Eliminate any possibility of discharging non-compliant water
  • Recover reusable purified process water
  • Leave only small quantities of dry solid for disposal

Zero Liquid Discharge Technologies



ReKon Ion Exchange is a reliable and cost-effective method of removing dissolved heavy metals and salts from wastewater and producing high quality deionized water for recycling. Some of the applications: raw water purification, softening and deionization; wastewater treatment, wastewater recovery and recycling; polishing and targeted ion recovery.


Reverse Osmosis Purification removes 99% of contaminants. Designed for efficiency, Kontek’s Reverse Osmosis systems recover up to 85% of the raw city or recovered process feed water by re-circulating the reject water portion back a second pass for retreatment.

Filter Press

Filter Press (300 by 142)

Quickly transform your liquid discharge into a solid form that passes the slump test. Presses consistently transform aqueous solution containing 2 to 5% total suspended solids  (TSS) to solid sludge cakes containing less than 65% moisture for easy disposal. Paired with a sludge dryer, your filter press is an important step in achieving Zero Liquid Discharge (ZLD).

Sludge Dryer

Space-Mizer 300 by 142

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 300 by 142

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.



SmartLogic’s intuitive design protects your water quality, safeguards your parts and conserves chemicals – all while minimizing labour requirements. Sophisticated, yet user friendly HMIs enable you to quickly fine-tune parameters  with precision, view analytics and respond to alarms.


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