AZCO equipment is utilized in fish hatcheries, fish farms, single-family sewer systems, municipal and commercial sewer systems, food processing waste treatment, toxic waste treatment, greenhouses and more. Our systems can be sized to completely oxidize the flow stream or only partially to desired levels.
For the most economical solution, ozone must be applied in conjunction with a chain of other clean and environment-friendly techniques:
  • Rotating screens. They are suitable for flows up to 460 m3/h, with screens 15 – 100 um size. About 1% of the main flow is charged with ozone for continued backwash. The water for the backwash does not require any chemicals, and it does not have to be heated.
  • DAF cells are suitable for the aeration of wastewater with very high organic content. In this process ozone oxidizes the surface of the tiny organic particles, creating tiny bubbles of carbon dioxide. Added ambient air provides further lift to the particles. Skimmers remove the resulting foam.
  • Foam Fractionators work similarly to DAF cells, except that they do not need mechanical skimmers. The foam overflows to a special compartment where it is removed by high-pressure mist. Ozone is injected into the incoming water line.
  • Flocculation process uses ozone to create flocculates from otherwise dissolved organics. A sand filter with automatic backwash further down the line filters these flocculates out.
    In more elaborate industrial wastewater treatment systems ozone is applied in a Ph-LOW tank followed by filtration, then in a Ph-HIGH treatment followed by filtration, and further followed by a high ozone level treatment assisted with hydrogen peroxide and/or UV radiation.
  • Ozone also helps in oil separation and sedimentation.
  • Aerobic and anaerobic digesters are suitable for pre-treatment, to be followed by ozonation.
  • Ozonation of large lagoons provides a much more efficient bio-treatment, see also the Lake Remediation process.
In most cases, not all of the techniques above need to be implemented at the same time. For the selection of proper technologies, many aspects must be evaluated, including:
  • Water flow
  • Wastewater content based on laboratory test results
  • Space available, and the cost of the space
  • Target water quality anywhere between merely some reduction of BOD and COD to compliance with bottled water quality standards.
  • Penalties for the discharge of water with BOD above allowable limits.
  • Cost of regional water and estimated value of the recycled water.

Azco Industries Limited is happy to work with your system design engineers for ozone system sizing to achieve the goals specified by the overall system architects.