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Water Purification FAQs

We have compiled a list of frequently asked questions about water purification. Check them out below.

Water purification means freeing water from any kind of impurity it contains, such as contaminants or micro organisms. Water purification is not a very one-sided process; the purification process contains many steps. The steps that need to be progressed depend on the kind of impurities that are found in the water. This can differ very much for different types of water.

There are two forms of impurities found in drinking water, suspended and dissolved:

a) Suspended impurities such as mud, dust, sand, bacteria, viruses etc
b) Dissolved impurities that are soluble in water such as; pesticides, arsenic & fluoride and heavy metals salts like mercury, lead, copper, cadmium.

Reverse Osmosis is a process where water molecules are forced through a 0.0001 micron semi permeable membrane by water pressure. A line of TFC – (Thin Film Composite) sheets are skillfully sandwiched together and rolled up around a hollow central tube in a spiral fashion. The sizes of these tubes depend on the quantity of water to be processed.

The reverse osmosis process of purification is mainly meant to reduce the ‘salt content’ from the water.

“Dissolved solids” in water refers to minerals, salts, metals and anions dissolved in water. This includes anything present in water other than suspended solids. (Suspended solids are particles or substances that are neither dissolved nor settled in the water.

In simple terms, TDS concentration is the sum of the cations (positively charged) and anions (negatively charged) ions in the water.

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