Water is the basic determinant for the existence of life on
earth. Water is required in everyday life in the domestic, industrial,
commercial and agriculture sectors abundantly. With the increase in population
growth, environmental pollution and growth of technology, water gets polluted
very easily through the waste materials from these sources and it becomes very
imperative to treat water we use. It is equally important to treat the waste
water too in order to check pollution of the water bodies and the ground water.
The purpose of treating water is to rid of the water contaminants present in
the water and make it fit for consumption. The treated waste water is
let out in to the environment without causing any negative impact on ecology.
- Conservation of water sources.
- Protection of environment.
- Maintain a healthy life for human beings.
In the modern world, providing water treatment solutions has
occupied a prime position and has developed as a major industry, extending
services in the sectors of domestic, industry, agriculture etc.
The basic product which is used in treating water and waste
water iscarbon. The activated carbon is a processed carbon that has high level of
micro porosity and makes possible the chemical absorption very quickly. The activated carbon finds its use
in water purification and
waste water treatment, apart from applications in other areas. It is a process
by which the contaminants in both the water and waste water are removed.
Removal of nitrogen and phosphorus from waste water is
another way of purification by which process the nitrogen gas is removed from
the waste water and released to air. Disinfecting the contaminateddrinking water is mainly done
to minimize the level of microorganisms in the treated water. The commonly used
methods used for disinfection of water are ozone, chlorine or ultraviolet
light.
Chlorination
The most commonly adopted method of treating water and waste water through
chlorination which is cost effective. Since the toxicity of residual chlorine
will affect aquatic species, it is essential to dechlorinate the treated effluent.
Ultraviolet
In ultraviolet no chemicals are used and the treated water
will not affect the consumers of treated water. The radiation of UV damages the
bacteria’s genetic pattern and renders them unable to reproduce.
Ozone O3
In this process, the Ozone O3 is produced through combining
O2 and a third oxygen atom and destroys many micro organisms. The disadvantage
of this process is the high cost of the equipment for generating ozone.
Water treatment
solutions depend on the nature of the water bodies and the intensity
of contaminants present in water. In addition to the above mentioned
general water treatment solutions, there are many companies who have designed
their own water treatment
solutions by obtaining patent for their technologies.
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