The OXAQUA system

HSD Water, offers OXAQUA RW; a reliable and sustainable water disinfection technology.

Based on the water electrolysis principle, OXAQUA RW sanitizes water stored in tanks and water towers by recirculating continuously a flow rate up to 7 m³/h without any addition of chemicals nor precursors such as sodium chloride. In addition it creates a small residual of oxidizer up to retain the quality of water while in storage or until the end-user’s point of use.

OXAQUA RW creates a recirculation loop of the (drinking) water storage tanks using an integrated pump. Its electrode will activate only when the oxidizer residual is reaching a low level (Built-in chlorine analyser provided in option OXAQUA RW CL).

OXAQUA RW uses the chlorides naturally present in the water to be treated (concentration has to be above 20 ppm Cl-) to generate on site and on demand up to 2 ppm of free chlorine under the form of hypochlorous acid, a strong oxidizer known for the prevention of the proliferation of bacteria, viruses, algae and molds in drinking and hot water systems. It is also efficient against many pathogens, such as E. Coli or Legionella Pneumophila.

Key applications of the system are:

Building buffer tanks
Beverage bottling industry (safeguarding processes & quality)
Water towers and reservoirs
Process water applications (feed water, make-up water)
Factory cooling processes (e.g.: Milk, …)

Stored water disinfection

Although it is generating a sanitizer, OXAQUA does not require any handling of chemicals, ensuring a minimum manpower and an extremely low carbon footprint.

The core of OXAQUA RW, the electrolysis cell, has a lifetime of up to 8,000 hours of operation, and an overall electric consumption of less than 500W, including the recirculation allows its installation not only on small to mid-size water supplies but also on fountain systems, water towers and reservoirs, drinking water tanks aboard ships and factory cooling processes.

The residual additional free chlorine generated will protect the distribution network (pipes & tanks) against micro-organism growth and will limit the biofilm development.

Implementing & operating OXAQUA-RW

OXAQUA RW is a compact system, easy to install and to control, even on existing pipework for retrofitting or replacement of obsolete disinfection systems.

It is easily operated through an intuitive control panel and monitoring of the performance can be done through the built-in data-logger (optional). Altough it is generation a sanitizer, OXAQUA RW does not require any handling of chemicals, ensuring a minimum manpower and an extremely low carbon footprint.

Maintenance operations are limited and do not require specific skillset or personal protection equipment.

Though not exhaustive, the equipment can be used for primary water disinfection, for re-chlorination (boosting stations) and for process water applications.

Summary of benefits

1. On-site generation of disinfected water

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