Ozone for water & wastewater

For water and wastewater treatment

Ozone for industrial chemical oxidisation

It is one of the strongest oxidants available on an industrial scale, second only to fluorine due to the extreme instability of its molecule (O3), which tends to transform into molecular oxygen (O2). Ozone is a colourless gas with a characteristic odour and is 12.5 times more soluble than oxygen in water. Given the highly unstable nature of the molecule, it cannot be produced and immediately sent for use. Its use is widespread in water treatment: purification, reuse, refractory compounds, dye removal.

The advantages of ozone oxidation

  • It does not generate solid waste.
  • It does not create odours.
  • It eliminates aerosols.
  • It increases the biodegradability of the substance.
  • It has a short life span and decomposes into oxygen (to be reused).

Ozone for tertiary treatments

The main sections that characterise an ozone treatment plant are:

  • the storage of refrigerated liquid oxygen;
  • the ozone production generator;
  • the ozone dissolution system.

Ozone can be dosed using various systems, two of which are the most commonly used:

  • the system with ceramic diffusers positioned at the bottom of the contact tank,
  • or the hydrokinetic system, in which a pump pressurises the liquid to be treated, which is then mixed with the gas through specially designed ejectors.

To ensure the correct sizing of the equipment, Nippon Sanso always recommends carrying out a trial run, providing its customers with equipment, specialised personnel and the know-how gained in over 25 years of activity.

The main applications of tertiary ozone treatment

Chemical industry

  • Detoxification.
  • Reduction of phenols, surfactants, colour, sulphides, cyanides.
  • Oxidation of nitrites and sulphites.
  • Increased biodegradability.
  • Oxidation of pesticides.

Food industry

  • Elimination of mould and algae.
  • Disinfection.
  • Sanitisation of process water distribution lines.

Textile industry

  • Colour and surfactant removal.
  • Final disinfection.
  • Water recovery.

Primary water treatment

  • Disinfection.
  • Pesticide oxidation.

Related gases

Do you still have questions?

At Nippon Sanso we are called “The Gas Professionals” for a reason, and it’s because we’ll be able to solve any doubt.

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