Essentials and necessity of Water purification A student’s viewpoint

Water purification: how it works.



The application of the technologies derived from nature for the betterment of our day-to-day life has gone a long way in helping us lead a better life; especially where simple, routine tasks are rendered easier.

Since times immemorial, humankind has been striving to make its work simpler by observing and assimilating ideas from nature and its bountiful resources; if it were not for this use of their intelligence and the associated curiosity, and its application towards making life easier, it would not have been possible to improve the quality of life for us.

Processes employed in everyday life by animals, birds, plants etc have been studied closely, analyzed at length, researched extensively, modified suitably, and then, wisely used to provide assistance and/or comfort to their future generations in particular and humankind in general.

When employed to routine daily tasks which are daily necessities of the masses, the utilization gains significant importance.
Water is one such element which finds universal demand for drinking, washing, irrigation and various other purposes. Since it is a life-sustaining requirement, the amount of effort or care taken to ensure its availability has been considerable. But, apart from abundant availability, the next, most essential requirement is of its being safe for human consumption.

The researchers have always directed their efforts at providing safety for consumption since it can become a potential health hazard because it can also be a very potent carrier of all sorts of bacteria, viruses, chemical effluents and other potentially poisonous and toxic substances.

Yardsticks are in place specifying down the quality of water required for different uses; for example, water for drinking would, certainly, require a set of parameters regarding the amount of impurities like bacteria, minerals, Solid Particle Matter (SPM) etc that may exist in the water supply to be potable.

As far as drinking water is concerned the developed countries realized, long ago, the benefits of using purified water to avoid water borne diseases and you would hardly find any household without a water purifier.

Even the developing countries, as also the third world, the advent of knowledge has made the use of a water filter a must for every home.
The process of Osmosis is quite simple and exists mostly in plants; water seeps in through thin membranes filtering the water. This process purifies water to remove impurities such as:
 Bacteria,
 Minerals,
 Other impurities of a soluble nature which dissolve in water including toxic substances.

As in the conduction of heat, which flows from a point where it is higher to a point where it is lower, water also has a propensity to travel, through permeable membranes from the side where it is dilute (and in a higher proportion ) to a point where the liquid is having higher concentration of impurities (called SOLUTES). This would, in effect, try to balance the amount of water on both sides.

This is Osmosis.

The process employed in purifiers is reverse of this process since we inject incoming water with a force sufficient to pass through the porous membrane from the side containing more solutes to the side where there are no solutes.

Thus water with impurities is, through employment of pressure forced to travel towards the other side with only purified product. This is REVERSE OSMOSIS.

Osmosis is one such process which has been used widely by industry to purify various liquids depending on the requirements, it has become a vital tool in helping us in our quest to ensure purity of what we consume in our daily life by providing potable, purified water.

An analysis of the quality of water is very important to decide if, and whether, a purifier is required or not; secondly, whether the amount of impurities are high enough to warrant the installation of an RO or whether only a minimal purification will do. A good salesman will, normally try to hide this aspect.

The reason for employing Carbon filters for the filtration process is that they prevent odors and filter most chemicals. In order to further purify micro-organisms some purifiers use UV radiation technology.

What we must first understand first is that the first requirement is to ascertain whether there is need for a purifier or not.

If the quality of the output is good, i.e. the amount of impurities or Solid Particle Matter (SPM) or the Total Dissolved Solids (TDS) is within the specified safety standards then there may be no need for a RO purifier.

This company has, in its wisdom, come up with purifiers to meet the needs of various sectors and would be happy to provide an adequate solution to all queries and requirements like::
Industry and

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Umrao Singh
Written for: Lars-Magnus Carlsson.
Friday, October 06, 2017