Ozone Water Treatment
Ozone has been in use for over a century to disinfect and treat water. North America is quickly becoming a major market for
Ozone Generators and Ozonated products. Ozone has a number of advantages over “traditional” treatments such as Chlorine.
Ozone is generated by Ozone Generators and is made from Oxygen in the air. This means that you never have to buy
chemicals or other “consumables” to treat your water. Oxygen is abundant and free. There is never any need to haul
chemicals, store chemicals on site, work with dangerous or toxic materials, determine proper mix ratios and other problems
associated with chemical water treatment.
Reliability, Modular Parts
As well, the systems are incredibly reliable. With advances in micro-electronics and modular design (snap-in boards and easily
interchanged parts), Ozone Generators are reliable, self-metering and “smart” with features such as automatic flow control and
metering. Generators do not require intensive maintenance or attention.
Once they are set up and running properly, there is not a lot
of user intervention required. And they do an excellent job of
sanitizing water. Ozone is the strongest commercially
available oxidant in the marketplace. This means it can kill
even chlorine-resistant bacteria. It also improves water taste
and acceptability (a feature often not found in even the best
chemical treatment systems). It precipitates iron and
manganese, which means that these substances can be
eliminated from the water. As well, it kills foul odors and
tastes caused by Hydrogen Suflide, sulphur bacteria and
other bacteria.
Operating Costs
Ozone operates for just pennies a day. A 4 gr/hr. Generator
only uses 120 watts and only operates when water is flowing.
With chemical systems, the costs to buy chemicals quickly
add up to more than what an Ozone Generator would cost.
Ozone (O3) is Produced from Oxygen (O2)
Ozone is produced from oxygen in the air. The Ozone
Generators take Oxygen in the air and “manufacture” Ozone.
Ozone generating systems are safe, reliable and the
technology is well understood. Ozone has been extensively
studied in clinical trials, universities, public water treatment
facilities, wastewater systems and other systems worldwide for decades. They are safe, reliable and easily adapted to on-farm
use. Once you have an Ozone Generator, there is never any need to buy chemicals or other on-going consumables, other
than electricity.
Many cities and municipalities now rely on Ozone for primary oxidation and sanitation. Ozone is a superior sanitizer and can
kill germs, viruses and bacteria thousands of times faster than chlorine. As well, unlike Chlorine, Ozone does not break down
into carcinogenic substances
Ozone System Objectives
Improvement in overall operation of the water treatment system by oxidizing iron, manganese, other minerals which are easily
removed from the water system.
•
Oxidation of organics, inorganics and killing of bacteria, germs and viruses.
•
Significant improvement in water clarity and purity.
•
No need to handle caustic chemicals such as Chlorine. (Ozone does not require chemicals for operation - Ozone is
produced from Oxygen in the air.)
•
Reduced liability in relation to water sanitation (destruction of chlorine-resistant bacteria) and employee liability
(exposure to carcinogens in water caused by Chlorine byproducts).
•
To produce crystal clear, healthy, good tasting water even under the most demanding circumstances.
Equipment, Maintenance
Ozone systems convert Oxygen (O2) in the air into Ozone (O3). Unless otherwise stated, Envron utilizes Corona Discharge
Ozone Generators which incorporate air dryers for maximum Ozone production. These systems are robust, low-maintenance
generators which incorporate micro-electronics and advanced safety features.
Ozone Generators
Ozone Generator operation is straightforward and is based on flow from the Mazzei Injectors. A flowmeter on the outside of the
Ozone Generator shows airflow. A balance barometer is used to ensure no water enters the Ozone Generator and a valve
controls how much airflow is allowed to flow through the Ozone Generator. If the Ozone Generator is to be installed in a warm
environment (such as a mechanical room), a duct will be set up to draw air from a cooler part of the building (see photo)
Safety, Ozone Contacting System
Ozone is metered into the water through the use of Mazzei Injectors. These injectors take water flow from your existing pump
and create a suction or vacuum which pulls air through the Ozone Generators. This is a significant safety feature as Ozone
cannot escape into the atmosphere in rooms where the Ozone Generators are housed. If the Ozone Generator leaks or a line
breaks, air is simply pulled into the system, Ozone does not escape. (See schematic).
Contacting
The Ozone contacting system is one of the key components of the Ozone system. Ozone needs contact time and mixing in
order to treat water. Envron systems use an initial Ozone manifold for contacting and a contact or settling tank to provide
adequate time for the Ozone reactions to take place.
Water Treatment System Typical Flow Chart
Ozone Generator Maintenance
If the Ozone Generator is set up with a
clean airflow, routine maintenance will
vary from six to eight months to one
year or more. This maintenance would
include cleaning the dielectrics in the
generator, dusting the interior of the
generator and reassembly. All
electrical components in the generator
are based on easily replaceable circuit
boards or on an easily replaced
dielectric. System failure is very rare.
Air Dryer - Desiccant in the air dryer
generally lasts from 2 - 3 years before
needing replacement.