Laundry Solutions Australia
Free Call: 1800 243 477
Email: info@ozonelaundry.com.au
Ozone Laundry is owned by Laundry Solutions Australia.

We are the importer & distributor of the premium range of IPSO Laundry Equipment and have been helping businesses with their laundry equipment needs for over 30 years. Our innovative and environmentally friendly Envirosaver – Ozone Laundry Disinfection system have thus far reduced our clients utility usage by in excess of 400 million litres of water, 100 million megajoules of Gas, 15 thousand tons of green house gas emissions, and saved our clients in excess of $3 million in utility costs.

How Ozone Disinfection Works

What Is Ozone Disinfection?

Ozone occurs quite readily in nature, most often as a result of lightning strikes that occur during thunderstorms. In fact the “fresh, clean, spring rain” smell that we notice after a storm most often results from nature’s creation of ozone. However, we are probably most familiar with ozone from reading about the “ozone layer” that circles the planet above the earth’s atmosphere. Here ozone is created by the sun’s ultra-violet rays. This serves to protect us from the ultra-violet radiation.

Ozone, (O3), sometimes called “activated oxygen”, contains three atoms of oxygen rather than the two atoms we normally breathe. Ozone is the second most powerful disinfectant in the world and can be used to destroy bacteria, viruses and odours.

Ozone is currently used in a wide range of applications including, pools, fruit and vegetable cleaning, room deodorising, sewerage treatment and as a disinfecting process for bottled water just to name a few.

How Is Ozone Produced?

Ozone is created when air is exposed to either: ultraviolet light, lightening or high voltage electric arcs.

EnviroSaver uses the ozone manufacturing technique known as a ‘corona discharge’ – by sending a spark through a stream of oxygen.

The electricity produces arcs that come into contact with the oxygen (O2) that splits oxygen molecules into single oxygen atoms.

The separate atoms then attach themselves to other oxygen molecules (O2) thus creating ozone (O3).

ozone-creation

Ozone very quickly reverts back to oxygen after it is used. This makes it a very environmentally friendly oxidant.

Compared to UV ozone systems, corona discharge systems create much more ozone at a higher concentration by weight, making them better suited for commercial and high-volume applications such as laundry disinfection systems.

What Makes Ozone Effective In Laundry?

When used in a laundry application ozone disinfects the wash water and everything in the wash water. Because this is achieved in cold water, it results in dramatic utility cost savings. It is for this reason that the application of ozone in laundry has gained rapid international acceptance over conventional laundry methods which require substantial amounts of hot water.

How Does Ozone Kill Bacteria?

The third oxygen atom of ozone makes it extremely reactive. This makes it the second most powerful disinfectant in the world. Ozone attacks most organic soils and kills bacteria 3200 times faster than chlorine bleach.

What Is ORP?

The presence of ozone in water can be measured in parts per million (ppm) but this is not enough, we need to know that the introduction of ozone to the wash bath is going to disinfect.

Because ozone is used in many water disinfection applications worldwide, the World Health Organisation recommends that the most effective way to measure the ability of ozone to disinfect in water is by using a measurement called ORP.

ORP is a term used frequently in the water treatment & food processing industries. ORP stands for Oxidation-Reduction Potential. So what is that? The best definition to give is that ORP is a measure of the water or wash-bath’s ability to break down contaminants.

It has a range of -2,000 to + 2,000 and units are in “mV” (millivolts). Since ozone is an oxidizer, we are only concerned with positive ORP levels (above 0 mV).

The higher the ORP level, the more ability the water has to destroy foreign contaminants such as microbes, or carbon based contaminants. The chart to the left identifies ORP levels for various applications.

ORP level can also be viewed as the level of bacterial activity of the water because a direct link occurs between ORP level and Coliform count in water. The chart here lists ORP levels and relative Coliform counts.

Does The Use Of Ozone In Laundry Meet The Australian Standards?

Yes it does.

The Australian Standard AS4146-2000 details two methods of disinfection in laundry; they are Thermal Disinfection (Section 3.5.2) and Chemical Disinfection (Section 3.5.3).

Thermal disinfection requires that the main wash is heated and maintained to either 71c for 3 minutes or 65c for 10 minutes.

Chemical disinfection requires a process of applying chemicals that increase the oxidative qualities of the wash bath that are then validated by swab tests conducted by the chemical supplier. The swab test is an aerobic bacterial plate count of less than 1 microorganism per square centimeter.

As mentioned earlier in this document we use a measurement of “ORP” to ensure that the disinfection process is set up correctly. EnviroSaver also has a failsafe system in place that will not allow the wash process to continue unless all of the factors reliant on ORP are achieved, i.e. ozone generation and delivery.

How Safe Is Ozone?

There have never been any reported long-term affects of exposure to ozone, however just like many disinfectants, ozone can be harmful if it were ever ingested in large volumes. Fortunately, this is not possible with the way ozone is blended with the water.

Ozone is diffused directly into a closed loop of water which means that there is no opportunity for ozone to escape into the laundry room.

The World Health Organisation requires that no working environment have ozone levels exceeding 0.1 ppm over an eight hour period or 0.3 ppm over a 15 minute period.

Our system does not release enough ozone into the environment to exceed these levels in fact a wall mounted air conditioner produces higher amounts of residual ozone in a laundry room than the ozone system itself.

Does Ozone Help With The Cleaning?

No, ozone is not “the silver bullet” for cleaning. The prime purpose of ozone is to disinfect. Cleaning is the job of the chemicals.

Some people perceive that there is a saving in chemical usage, however experience has shown that whilst there may be a reduction of one type of chemical, there is most likely an increase in another.

Each installation is different because no one site uses the same chemicals or concentrations. This means that detergent, bleaches and softeners need adjusting to suit cold water washing.

Request More Information

For more information on Ozone Disinfection or to request a quote on installing our EnviroSaver system in your laundry, please fill in the form and one of our helpful team members will be in contact as soon as possible.