Gaia© Ozone Generator

Ozone is an unstable molecule; thus, Water ApS recommends that its generation should occur at the point of application. That means one generator per ozonation system. The length of tubing should be kept as short as possible (preferably not more than a few meters) to minimize ozone destruction within the residence time in the inlet tubing. Some advantages of the proposed setup are:

  • Maximum dissolution efficiency
  • Minimum losses
  • Safety: ozone is not traveling for long through the hoses that might be oxidised,
    minimizing the risk for leaks
  • Low installation cost: less parts, shorter tubes
  • Maximum water treatment efficiency: even if one of the ozone generators stops working,
    the majority of the water will be treated.

Specifications for Gaia Ozone Generator

  • Gaia Ozone Generator
  • Very compact and easy to operate
  • 150 g/Nm3.
  • 60 g/h.
  • 8-15 % wt/wt ozone.
  • Nominal Working Pressure. 2.5 BAR / 36 PSI
  • Gas flow 6 l/m
  • 230 V ~ ±3%, 50/60 Hz, Single Phase, 3.5 A
  • Maximum Power Consumption: 700 W
  • Tubing oxygen inlet: 4/6 mm PTFE
  • Tubing ozone outlet: 4/6 mm PTFE
  • It is essential to cool the ozone generator with liquid cooling, to keep its performance optimal.
    SMC – Thermo – Chiller. Model: HRS030.
    Set temperature for Gaia 5° celcius.


  • Control platform supplied by OxyGuard A/S
  • Name: Ozone / o3 / Trioxygen
  • Ozone = 2 kg/m3
  • Size:
    • W : 230 mm. L : 500 mm. H : 100 mm. Kg 12.
  • Flow calculated in weight:
    • 3 liter oxygen / min  =  250 gram / oxygen hour.
    • 6 liter oxygen / min  =  500 gram / oxygen hour.
    • 10 liter oxygen / min  =  840 gram / oxygen hour.
    • 40 liter oxygen / min = 3360 gram / oxygen hour.

Materials and Construction

  • Enclosure: Aluminum
  • High Precision Machined Ozone Generator
  • Cell tested at up to 10 BAR for leaks
  • o3 / o2 Gas tubing: PTFE
  • The Gaia ozone generator is designed manufactured by Water ApS in Denmark and it is based on a patent idea.

Nitrogen booster

Ozone generators that use pure oxygen (100%) can not run optimal, it is necessary to add some nitrogen in the oxygen flow before it enters the ozone generator. A small amount of compressed dry air will make sure the ozone generator will run as efficiently as possible.

The ozone generator needs 95 to 98% oxygen. To regulate how much air the nitrogen booster should supply, an oxygen sensor will be used.

Technical data
Voltage / FrequencyVolt / Hz230 V / 50 Hz
MotorHP / kW105 / 1,1 – (A = 7,8)
Tank sizeLitres25
Max. pressureBar / Psi8 / 116
Inlet flow rate @ 0 bar
Outlet flow rate @ 5 bar
120 – incl. 15% purge regeneration
Dew pointPDP-40 @ 7 bar
Dimensions (L x W x H)mm460 x 535 x 690
Duty CycleS1100%
Noise leveldB(A)1m71

Check valve for backflow

In a continually running system, malfunctions might occur, resulting in accidental backflow of water. If that water enters the ozone generator, it could cause severe damage to the ozone reactor and power supplies resulting in major cost and treatment interruption. The simplest solution is using check valve. Water ApS can consult you to select the right solution according to your needs.

The check valves can also be used for drinking water because of it’s clean materials and approval by the authorities.

Approvals and certificationsMaterials
ISO by VeritasSteel
TÜV, 2014 / 68 / EUSeals PTFE
CE 0035
ATEX declaration

Pacific control unit

The required ozone dosage might fluctuate over the year or during the day; with the Pacific control system supplied by OxyGuard International A/S, the delivered ozone dosage will be adjusted according to the water quality requirements of the specific system. This automatic adjustment of ozone dosage will save energy, keeping the running cost for the entire ozonation system at a low level, ensuring safety. The Pacific control system provides an overview of the ozone generator performance and it consists of indicators, combination of relays and digital inputs/outputs. With the Pacific control unit you can simultaneously monitor and control the Gaia ozone generator along with the miscellaneous sensors that consist the ozonation system. A single Pacific control unit can work with up to 20 Gaia ozone generators. The Pacific control units have a simple design and they are reliable and easy to handle.

By adding a Web interface to a Pacific control unit, you can use a web browser and IP connection to see values on a computer. Pacific control units are equipped with alarm systems, while sms will be sent in case of abnormalities. Therefore, it is possible to fully control the ozone system not only manually on site but also remotely through a computer. It also communicates with OxyGuard Commander systems, P-Net, TCP/Modbus, TCP/IP and USB.

Several OxyGuard sensors can be added in the Pacific control unit allowing to monitor continually e.g. dissolved oxygen concentration, REDOX level, pH, salinity, carbon dioxide and total gas pressure level and temperature allowing a complete overview of several water quality parameters within the system. The Pacific control systems has also active and passive devices such as sensors, flow meters etc. The water flow and the ozone concentration in water and the surrounding environment are also controlled. A build-in data logger facilitates the data collection. For more information, about the Pacific control unit and the various probes please see the relevant technical manual supplied by OxyGuard International A/S.