Ozone is an unstable gas as it is
produced for commercial application and has a pungent
characteristic odor, it is formed photo chemically in
Earth's Stratosphere, but exist at ground level only in low
concentration. It is the most powerful Oxidant used in
Swimming Pools and has the ability to destroy algae and
bacteria, inactive viruses and to oxidize many organics and
inorganic contaminants which are present in the water.
Ozone has a short half life in aqueous solution this
Ozonised water can be recycled in Swimming Pools without
fear of building high concentration of dissolved Chemicals.
Application of Ozone in Water
treatment for Swimming pools
Anybody entering a swimming pool
contaminates the water either from secretion or just from
washing off. Typical contaminated are
● Skin flaks
● Hair ointments
In addition there are contaminants and organisms from the
environment of the swimming pools such as dust algae and
microorganisms therefore the pool water has to be constantly
filtered and disinfected.
At the present time only chlorine disinfection is used which
means use if chlorine, hypochloride and chlorine dioxide.
However, the disinfection efficiency of chlorine is very
much hindered by water contaminants.
For Example : In highly contaminated water even at a
concentration of 3.5mg/l of free chlorine, virus bacteria
were found while normally a tenth of this amount that is
0.3mg Cl 2/ltrs would be sufficient to destroy the bacteria.
There are several causes for a reduction of Chlorine
Colloids may envelope bacteria forming a protective coat
Organic are oxidised by chlorine which reduces the
concentration of free chlorine.
Ammonia and other nitrogenous compounds react with Chlorine
forming Chlorine-Nitrogen compounds which have slower in
activation for virus and bacteria.
These Chlorine compounds known as Chloamines and Chlorourea
not only produce that typical unwanted swimming pool odor.
But are also highly Irritant poisonous substances that cause
Eye Irritation ( Redness of Eyes ) and Skin Allergy. Some of
these chlorine compound are found to be highly carciogenic.
The comfort of the swimmer keep a priority aspect is
selection of a swimming pool purification process.
Ozone is proved to be the most Advanced & beneficial
treatment processes .Advantage of using Ozone v/s Chlorine
Ozone possesses many advantages over chlorine in the
processing of swimming pool water or in conjuction with
Basically, ozone is used as a purification agent and
chlorine is used for disinfection. Actually, ozone can be
used both as a flocculating agent as a disinfectant in
addition to its function as a purification agent. The pool
water is flocculated to remove various colloidal material
and substances that create turbidity, as well as bacteria
and virus. The water passes through sand filters to remove
the precipitate before being ozonated. By removing the
colloidal matter and the cause of turbidity, the ozone is
given a better chance of doing a fine job.
Some of the advantages and
disadvantages of ozone and chlorine used for swimming pool
water purification are :
● Chlorine is not only highly toxic,
it is a poisonous gas
● Although ozone is rated as toxic at the 1.0 mg/1 level by
the United States government, no one has ever been known to
as a result of inhaling it. Ozone has a very
pungent odor, noticeable at the 0.01mg/1 level; is highly
irritating at elevated levels;
tends to dry out the skin and
mucous membrane and can cause temporary throat discomfort.
● Chlorine is stored in high pressure containers on the
premises and can be dangerous. A broken chlorine line could
● Ozone is generated on the premises (not stored)
● Chlorine, when mixed with urine and perspiration, will
form chloramines that will cause eye irritation and are
toxic to aquatic life.
● The cost of chlorine is constantly increasing and has
become quite expensive. Ozone, on the contrary, is becoming
due to the increase in efficiency and lower
energy consumption. The overall cost of using ozone instead
of chlorine will be less
costly to the pool owner.
● Ozone is the most active oxidizing agent that can be used
with safety. It is sometimes called “activated oxygen”.
● Tests have proven that ozone is from 600 to 3000 times
more active in the destruction of bacteria and viruses than
chlorine in the
same concentration. Escherichia Coliform (E.
coli) is killed within 5 seconds by ozone at a concentration
of 1 mg/1, whereas
15,000 seconds for the same results using
chlorine at the same concentration.
● Ozone is effective against mustiness, mildew, fungus and
can be used to eliminate the “locker room” odor in dressing
● Due to the flocculation process and the ozonation process,
the water in an ozonated pool is very clear. A sky blue
color is imparted
in the pool water.
● Chlorine is more effective against algae growth. Outdoor
pools using ozone have a problem with algae bloom, under
temperature conditions, that can be eliminated bu
chlorine “ shock treatment’ of 5 to 10 mg /1, when needed.
● Chlorine needs pH control (7.0 to 7.4 pH) for reliable
results. Ozone does not not require pH control but some of
chemicals used may require such control.
● Ozone is an excellent deodorizing agent for many
substances, such as putrefactions, hydrogen sulfide, urine,
● Ozonated pools do not have the “bath tub ring” that is
caused by skin oils, grease, ointments, hair dressing and
by the swimmers
● Ozone is used in therapeutic pools and baths for the
treatment of skin infection and burns.
OZONE WASTE WATER TREATMENT
Ozonation has recently gained
popularity as a wastewater treatment alternative in the
United States after regulatory agencies placed restrictions
on chlorine treatment induced disinfections byproducts,
especially levels of trihalomethane (THM). Ozonation is an
established and proven disinfections alternative as well as a
peroxidant for the control of THM precursors.
Benefits of Ozonation
Oxidation and volatilization of
Control of algae and associated compounds,
Destabilization (micro-flocculation) of certain types of
Removal of color-causing compounds,
Oxidation of iron and manganese,
Very short disinfection times, and
Partial oxidation of organics for subsequent removal by
Ozonation for Bottled Water:
Ozone in Bottled Water industry is
becoming more like a pre-requisite. Almost all the popular
brands take pride in claiming that their water is ozonated.
The International Bottled Water Association (IBWA)
recommends that ozone be applied in the 1.0 to 2.0 milligram
per liter (mg/L) range for a period of 4 to 10 minutes
contact time to safely ensure disinfection. Application at
this level helps maintain a 0.1 to 0.4 ppm residual ozone
level at the time of bottling. This provides an additional
safety factor because the bottles can be disinfected and
sanitized while filling it with product.
In the bottled water market, maintaining an optimum level of
ozone at the filler is critical. If the ozone level is too
high, plastic bottles may develop an aftertaste. If the
level is too low, bacteria spores hidden in the water,
inside the plastic walls or closure device could recover and
easily contaminate the entire product.
Water charged with ozone is also suitable for rinsing
bottles and cleaning and disinfecting production equipment.
This reduces the potential for bacterial growth in
unchlorinated water found within the distribution system. It
also reduces the amount of clean-in-place (CIP) required to
keep the operation disinfected. Many plants have started
incorporating an ozonated cap and bottle rinsing system.
Ozone is particularly effective when used in conjunction
with other water treatment processes. By using reverse
osmosis and nanofiltration or ultrafiltration, organic
precursors and inorganics such as bromide, can be removed
from water before ozone is used. With this configuration, 99
percent of naturally occurring organic materials (such as
lignin, humic and fulvic acids) can be removed, reducing the
amount of ozone necessary to disinfect the water. Another
benefit is that ozone will not lead to the formation of
harmful trihalomethanes (THMs), which are formed when
chlorine is added to raw water containing humic materials.
Chemtronics ozonetor ensures a high concentration of ozone
at a consistent rate. The machines are protected using
various safety circuits. Chemtronics ozonetor also has a
very efficient mixing system which gives you the set
Residual ozone measurement can be done using different ozone
sensors such as Ecosensors for accurate ozone sensing. But
for the bottlers who do not want accurate ozone sensing, we
can supply digital ozone sensors with the calibration chart
at a very low cost. Also, the chemical testing kits are
available with us.
While considering all the technical benefits ozone is giving
you, the commercial benefits should not be overlooked. Due
to ozone, the shelf life of your finished product increases.
You can store the water for a longer period of time without
any worry of recontamination. Similarly, ozone ensures very
low bacteria count, which leads to highly safe drinking
water. This eliminates the risk of failing on the tests
performed by BIS.
To sum it all, we can say that ozone is the ultimate saviour
for the bottled water manufacturers.
Ozone for drinking water application:
Safe and pure drinking water has
become one of the main concerns of every citizen. First of
all the water supply of the municipal corporation is
inadequate in most of the cases. Add to that the atrocious
rates charged by the tanker water suppliers and you have a
very unhealthy situation at hand. Therefore a lot of housing
colonies, hotels and clubs etc prefer their own boring
wells. Although the problem of sufficient water is taken
care of by these boring wells, the safe and pure drinking
water is far from guaranteed.
The main concern is the odour, bad taste and the high
bacterial contamination, which make this water unpotable.
Use of chlorine further makes the quality of water worse.
Ultra-violet lamps cannot remove the heavy load of bacterial
contamination nor it can remove the odour and bad taste. And
that makes you wonder if there is any easy solution close
The solution is right in front of you. Ozone removes not
only the odour and bad taste but also the bacterial load and
makes the boring well water potable. The system is very cost
effective. It can also treat huge volumes of water
instantaneously. You will not have to add any chemicals to
water and thus it is environmental friendly too! In other
words, Ozonation is the Complete Solution to your water
In some cases, the municipal water supply is adequate but
water is not clean. The water pipelines are usually very
old. They are rusted and they pass through catchments. A
possibility of sewage water mixed into your drinking water
line is very high. Even then, Ozone is your lifeguard.
Chemtronics ozonetor can be installed for the purification
of the municipal water before it reaches your glass.
Chemtronics ozonetor doesn't take a large space. It is in
fact so small that you can fit it in a very small covered
area such as you existing pump room. The power requirement
is also very less. In typical plants, the power consumption
is as low as 200 watts per hour or 1 unit in 5 hours! As
mentioned earlier, you don't need to add any harmful
chemicals in your water. Ozone is generated using a fraction
of oxygen from the air directly.
Access to Safe and Pure drinking water is your birthright.
If your civic administration is failing to do its duties,
why should you suffer? This is the right opportunity for you
to be self sufficient in the most essential commodity:
Cooling Water Treatment with Ozone
Ozone treatment of a cooling tower can
reduce the quantity of blowdown. Actual reductions will be
system specific, but can range from 50% to 90%. Although
actual elimination of blowdown altogether is unlikely, this
is a very effective technique used to reduce water
consumption. Ozone decomposes into oxygen, and therefore
imparts no undesirable chemical residue into the system.
Therefore, blowdown from cooling towers treated with ozone
only will be free of biocide, scale, or corrosion control
Ozone is an unstable gas that will occur naturally during a
thunderstorm. There are also several man made sources such
as electronic copying/printing equipment, electric motors.
For industrial use, it is generated and it is to be used.
The inherent instability of ozone makes it impractical to
package for use and shipment.
Ozone can be generated from dry air, with a dew point of -51
o C or less, or dry oxygen with a dew point of -51 o C or
less. An air-fed ozone generation system includes an air
filter, air cooler, compressor and dryer. Ozone reactions in
cooling water are as follows:
Ozone will disinfect more rapidly than any other
commercially available oxidant. This feature makes ozone a
viable technique for biofilm control and to attack organic
binders holding scaling materials to cooling water surfaces.
The mucilage is usually generated by bacteria in the system.
Ozone will destroy many organics commonly encountered in
recirculated cooling systems, some rapidly, some slowly, and
some no reaction. Ozonation of some organics will result in
by-products that will be difficult to oxidize further. Thus,
although ozone is effective in destroying many organics, all
organics will not be completely converted to carbon biocide
Algae are readily oxidized by ozone. However, algae will
reappear on exposure to sunlight unless small ozone residual
is left in the system. Ozone levels in the 0.01 to 0.05-mg/l
ranges, maintained for a few minutes, are usually sufficient
for algae control.
Current data on corrosion control benefits that are obtained
by using ozone is conflicting. In some cases, corrosion
rates are slow and others, more rapid. Mild steel and
aluminum corrode slower with ozone presence, whereas
galvanized steel has an increased corrosion rate versus
water containing oxygen. It seems reasonable that some
corrosion is expected, but can be minimized by maintaining
Ozone Used In Commercial Laundry
Washing Out the Competition Clean
clothes and linens are essential to the health and
well-being of most individuals. However, keeping clothes and
linens clean is typically an expensive and wasteful process.
Consider the importance of laundries to hotels, hospital,
prisons and numerous other institutions. Heating water to a
sufficient temperature to be used in traditional laundry
systems is expensive, and wasteful. Most water used in
traditional laundry sytems is drained into the sewer.
A considerable waste considering the cost required to
transport the water to the laundry system, heat the water,
drain the water and ultimately clean the water.
Ozone laundry systems are an effective replacement for
traditional hot water and detergent systems. Ozone is a
significantly more effective sanitizing agent than chlorine,
killing all bacteria and viruses instantly, without the
creation of harmful by-products.
Many savings can be realized as a result of using ozone as
an alternative to chemical-only laundry treatment. Ozone
laundry systems do not require hot water.
Ozone Laundry Systems
There are over large number commercial
laundry facilities located in hotels, resorts, health
service facilities, prisons, and stand-alone companies all
over the globe. Conventional systems use substantial amounts
of detergents, chemicals, hot water, and energy. With
ozonation systems, ozone is injected into the wash process
to clean the clothing or linens.
With ozonation systems, the amount of chemical usage is
reduced significantly. Water usage and wash times are
reduced, and textile life is improved. In addition, the
systems can reduce the time taken to wash a load. Along with
environmental benefits, there are economic benefits as well.
In its role as a powerful oxidant and biocide, ozone
eliminates or alleviates a variety of laundry problems. The
equipment is market proven and offers large cost savings
that have an immediate positive effect on the bottom line.
Ozone Generator for Air