Water Innovations, Inc

Treatment of Cyanide Bearing Wastewaters


Courtesy of Water Innovations, Inc

Water Innovations utilizes a 2-stage Cyanide Oxidation (CN) system that can treat from 2 GPM to 10 GPM. In the first stage of treatment, hypochlorite oxidizes cyanide to cyanate. It consists of two double-wall “Batch” Cyanide Oxidation Tank and an accumulation tank for cyanide-bearing rinse water, each tank equipped with one mixer. Wastewater containing cyanide will be pumped or flow by gravity into the first tank and then on to the second tank for complete cyanide oxidation.  Both tanks have liquid level monitoring by an ultrasonic sensor to control incoming waste and outgoing solution transfers. The cyanide oxidation process would be controlled by level, pH & ORP sensors with electronic chemical metering pumps for NaOH, H2SO4, and hypochlorite addition with 4-20 mA control. All managed by  Allen-Bradley CompactLogix (PAC) controller with touch screen (HMI).

Features & Benefits

  • Waste Volumes 2 GPM – 100 GPM
  • Nema 4 Control Enclosure
  • Pedestal Mounted Mixers
  • Simple Design Modular & Scalable
  • Signet pH Control, ORP & Level Sensor
  • Highly-Automated Chemical Treatment
  • Integrated Controls


  • Holding Tank
  • Pump Skid
  • Controls
  • Chemical Feeds
  • Mechanical Mixers


  • Best in Class system Controls
  • Rockwell Automation
  • Auto Chemical Feed Pump
  • Allen-Bradley PLC & HMI
  • Custom Engineering available

Water Innovations specializes in best-in class ion exchange water recycling systems for deionized   water & highly automated wastewater treatment equipment for a wide variety of waste from many industrial applications. WI uses high quality components to ensure reliability and performance.

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