Maytag MWF4200AWS Technical Information download pdf (Page 30)

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3.5.6 Point of Entry (POE) Ozone

A relatively new technology for the consumer market, ozone disinfection technology is becoming an

alternative for water treatment and disinfection. This technology produces a chemical reaction that

converts regular oxygen (O

) into Ozone (O

). Ozone reacts strongly with many compounds through a

process called “oxidation”. Ozone systems have the potential to treat a number of drinking water issues

when applied in combination with filtration systems and specialized media filters. These contaminants

include:

• Dissolved Iron,

• Dissolved Hydrogen Sulphide (rotten egg smell),

• Dissolved Manganese,

• Arsenic,

• Total Organic Carbon (TOC).

In addition to these water contaminants, ozone has the potential to inactivate bacteria, viruses, and parasites

under the proper conditions.

3.5.6.1 POE Ozone Disadvantages

The following are a number of notable disadvantages as compared to the MAYTAG Whole Home Water

Filtration System. Most POE Ozone systems:

• do not provide a physical barrier to bacteria, viruses and cysts,

• allow inactivated pathogens to be consumed after disinfection,

• are not proven to inactivate cysts,

• have a raw water colour and organic limitation that lead to premature fouling of system lowering

the treatment effectiveness,

• produce ozone, which at certain concentrations is a dangerous gas and is toxic to humans,

• cannot produce the required ozone to inactivate potentially harmful bacteria, viruses, and parasites

during power outages,

• have much higher energy costs because ozone production systems typically required higher

energies,

• are affected by lower temperatures (less efficient ozone production),

• are affected by pH levels above 6.5 (reactions are much slower),

• are affected by turbidity in water,

• require very high oxygen quality to produce the required amounts of ozone.

3.5.7 Point Of Entry (POE) Chlorine Dosing Systems

Chlorine Dosing Systems have been used since the 1800’s to reduce the occurrence of waterborne disease

outbreaks in society. These systems are very effective against bacteria and viruses that may be introduced

into a drinking water supply. In addition to its disinfection properties, chlorine, in combination with

filtration systems and specialized media filters treat a number of other drinking water concerns. These

include:

• Dissolved Iron

• Dissolved Hydrogen Sulphide (rotten egg smell)

• Arsenic

• Radon

• Total Organic Carbon (TOC)

Point of entry chlorine dosing systems are commonly used and recommended by municipalities as a

secondary barrier to pathogens.

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Maytag MWF4200AWS Technical Information Page 30

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