sulfide is a gas present in some waters. There is never any
doubt as to when it is present due to its offensive "rotten
egg" odor. Obnoxious as is the taste and odor of hydrogen
sulfide, these are only two of the problems it presents. It
promotes corrosion due to its activity as a weak acid;
further, its presence in air causes silver to tarnish in a
matter of seconds. High concentrates of hydrogen sulfide gas
are both flammable and poisonous. High concentration of
dissolved hydrogen sulfide or iron can foul the bed of an ion
exchange softener. Its continued presence will lead to lower
and lower capacity and may finally necessitate replacement of
the resin bed. Iron is a very common element often found in
ground water. Iron may be found in several forms in water.
The two most common are ferrous (dissolved) or ferric (rust
particles). Iron bacteria are also common and thrive on iron,
which it actually uses in their metabolic processes. Iron
present in water can cause staining and/or impart a metallic
or distorted flavor to beverages. Iron bacteria can cause
staining, plugging, and taste and odor problems in a water
system, in even when iron levels are very low.
Many different chemical
treatment approaches have been used to control or treat
hydrogen sulfide or iron.
Though a strong oxidizer is nonselective, requires large
doses, and can react with organic compounds to form
chlorinated organics, which increase effluent toxicity.
Another strong oxidizer is a hard‑to‑handle purple powder. It
also adds manganese to the system, which precipitates out as
manganese dioxide, which is an unsightly brownish‑black stain.
Is a strong oxidizer that reacts quickly and specifically with
hydrogen sulfide at a theoretical dosing ratio of about 1:1
(weight). Reaction byproducts are harmless, consisting of
sulfur, sulfate, water, and oxygen. It will also react
quickly and specifically with iron (ferrous) at a theoretical
dosing of about 0.3:1 (weight). Reaction byproducts are
harmless, consisting of iron (ferric), water and oxygen.
Reaction times will occur within minutes or less.
peroxide combine advantages not obtainable with any other
single form of sulfide or iron control. It is cost effective,
component specific, and forms no toxic byproducts. It is a
stable oxidant, having a natural decomposition rate in storage
of less than 2% per year.
Versatility of hydrogen peroxide
Hydrogen peroxide is versatile, it can be used for many
applications. It can be used in all media; air, water, waste
water and soils. It is sometimes used combined with other
agents, to enhance and accelerate processes. Hydrogen peroxide
is most commonly used to remove pollutants from waste water
and from air. It contests bacterial growth (for example bio
fouling in water systems) and it can enhance bacterial growth
(for example bio remediation of polluted soils and ground
water) through oxygen addition. It can also be used to treat
pollutions that can be easily oxidized (for example iron and
sulfides) and pollutions that are difficult to oxidize (for
example dissolved solids, gasoline and pesticides).
Finally, it can be used to bleach paper, textile, teeth and
hair or to produce food, minerals, petrochemical substances or
washing powder. In pure form, hydrogen peroxide is used as an
oxygen provider to drive Russian submarines.
OXYLOX WATER TREATMENT SYSTEM
Specialties Group, Inc. has designed the Oxylox SystemTM,
utilizing hydrogen peroxide, to treat total sulfide levels in
excess of 300 ppm and iron levels up to 30 ppm, while
controlling iron related and sulfate reducing bacteria. The
Oxylox System is easy to install and requires little
maintenance. In most cases, chlorine is eliminated, as well
as, large bulky retention tanks. Proprietary valve control
configuration and media, rapid in-line mixing, and corrosion
resistant components are designed to last for years in even
the most difficult water treatment applications.
Is hydrogen peroxide used for drinking water
Among other applications, hydrogen peroxide is used as a
disinfectant. It is used to treat inflammation of the gums and
to disinfect (drinking) water. It is also used to combat
excessive microbial growth in water systems and cooling
towers. In the United States, hydrogen peroxide is used more
and more frequently to treat individual water supplies. It is
used to prevent the formation of colors, tastes, corrosion and
scaling by pollution degradation (iron, manganese, sulfates)
and micro-organism degradation. Hydrogen peroxide reacts very
fast. It will than disintegrate into hydrogen and water,
without the formation of byproducts. This increases the amount
of oxygen in water.
The disinfection mechanism of hydrogen peroxide
is based on the release of free oxygen radicals: H2O2
H2O + O2
In the 1950's, hydrogen peroxide was first used for drinking
water disinfection in Eastern Europe. It is known for its high
oxidative and biocide efficiency. Hydrogen peroxide has not
been used often for drinking water disinfection, but it's
popularity seems to increase. It is often used combined with
ozone, silver or UV.
Is hydrogen peroxide used for swimming pool
The application of peroxides for
disinfection and water treatment are limited. Recently, more
stable forms have been developed, which can be used for
application in swimming pools. Hydrogen peroxide disinfection
requires a high dose. The main disadvantage is the small
disinfecting and oxidizing ability of hydrogen peroxide at
active concentrations (tens of milligrams per liter), which
are required for swimming pool disinfection. Another problem
is the quick decomposition of hydrogen peroxide in water and
the presence of oxygen radicals. Through stabilizer addition,
the decomposition of hydrogen peroxide is delayed and the
disinfection ability can be maintained.