Replacing Old Ozone Generators

An old ozone generator is often replaced for a number of reasons, which could be failure, age, or changes in water flow or water quality. However, the main challenge is to find a new ozone generator, which could fit the existing system. Primozone, specializing in complete ozone water treatment solutions, provides cost efficient ozone generators that will redefine ozone installation.

Primozone Ozone Generator Technology

Primozone ozone generator technology includes unique features that provide innovative possibilities when it comes to substituting an old ozone generator. Features such as modular design, small footprint, high concentration of ozone up to 20wt%, and high gas pressure of up to 4 bar/58psi allow for easy replacement and at the same time provides opportunities to prepare for future improvements.

Space continues to be a constant challenge when substituting an old ozone generator with a new one. Thanks to the modular design of Primozone ozone generators, space constraint is no longer an issue as the footprint is over 50% smaller than that of current ozone generators.

Using a forklift, the Primozone ozone generator modules can be easily placed in position. This eliminates the need to change the building or to lift off any roofs. When replacing ozone generators, up-time becomes an important factor. Due to the small footprint of Primozone ozone technology, it can be deployed next to the old generator before removing the latter one.

Ease of Installation and Start-Up

Other factors that secure the up-time are start-up and ease of installation. The Primozone ozone generator is easy to deploy, start-up, and operate. The biggest challenge is accommodating the present ozone system, but with the Primozone ozone generators, except for making slight corrections to the present peripheral equipment, no additional tasks are involved.

The present oxygen source, whether containing a LOX or PSA oxygen generator, will exhibit sufficient capacity and do not have to be replaced often. High ozone concentration translates into significant savings in oxygen.

Due to the low gas flow produced by high ozone concentration, the existing dissolution solutions and ozone destructors do not have to be replaced often; however, an upgrade will enhance performance. In addition, it is easy to add ozone capacity to a present system.

A Primozone ozone generator can be easily fitted in almost any place, thanks to its small footprint. If a current ozone solution is not dimensioned to handle the increased ozone capacity, a complete system can be integrated through a containerized solution. A comprehensive ozone system that generates up to 4kg/ 200lb/day of ozone can be accommodated in a 20' container.

Redefining Ozone Installation

Using Primozone ozone technology in place of standard ozone installations will allow major improvements at different points in the system. High gas pressure, high concentration of ozone, and modularity are attributed to the excellent performance of the Primozone system, allowing improvements in terms of efficiency.

The use of Primozone ozone technology, in tandem with a properly designed ozone system, will translate into reduced running costs and lower investment costs. Figure 1 shows a diagram of Primozone ozone generator.

Layout of Primozone ozone generator

Figure 1. Layout of Primozone ozone generator

Less Oxygen Consumption

Oxygen consumption is reduced to just over 50% as a result of the sophisticated Primozone technology, thus making it possible to generate ozone with high concentrations (up to 20 wt%). In other words, oxygen consumption is linear to ozone generation and just half the amount of oxygen is used.

Modularity Saves Investment Cost

Modularity saves as much as 40% in investment costs since the requirement for standby systems are reduced to a large extent. If the ozone requirement is 10kg, users can add a 2.5kg Primozone ozone module for stand-by.

Efficient Dissolution

Due to high gas pressure and high ozone concentration, more efficient dissolution is obtained. Based on the design, this also means the option of utilizing smaller booster pumps or eliminating the booster pumps entirely. This saves operational and investment costs.

Less Off-Gas

Since the high ozone concentration means a lower gas flow, 50% less off-gas is obtained. This saves both investment and operational expenditures.

Building for the Future

Replacement can be carried out gradually to save on investment costs. First, the ozone generator can be replaced to secure up-time, and then enhancements can be made to oxygen generation and the dissolution system to further improve performance and bring down operational costs.


  • Containerized ozone solution: 4 x Primozone® GM18; cooling skid; and control system; commissioning June 2015 (City of Luxembourg, WTP, Luxembourg)
  • Replacement ozone generator: Primozone® GM48; commissioning April 2015 (Fisher Ferry, WTP, Vicksburg, US Replacement ozone generator)
  • Replacement ozone generators: 4 x Primozone GM18; commissioning 2011 (E.ON RoCa Power station, Rotterdam, Holland)
  • Complete ozone solution: Primozone® GM12, oxygen generation, dissolution and side-stream modules, Primozone® DM ozone destructor; commissioning March 2012 (Oulun Vesi WTP, Finland)
  • Complete ozone solution: 2 x Primozone® GM18 on independent lines, oxygen generators and dissolution; commissioning June 2007 (Dalkaraby WTP, Âland, Finland)

This information has been sourced, reviewed and adapted from materials provided by Primozone.

For more information on this source, please visit Primozone.


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