What are the methods of water purificaton?

Answer 1

Water purification is the process of removing undesirable chemicals, materials, and biological contaminants from raw water.
The goal is to produce water fit for a specific purpose.
Most water is purified for human consumption (drinking water) .
In general the methods used include physical process such as filtration and sedimentation, biological processes such as slow sand filters or activated sludge, chemical process such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light.

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Answer 2

There are several ways to purify water.

First is the obvious, boiling the water for an extended period of time allows all the microorganisms to be killed. Boiling for 1-3 minutes usually kills anything harmful in water. However, if the water you are boiling is hard water, this might actually cause more compounds to materialize. Hard water has calcium, magnesium and bicarbonate ions in it. Boiling could actually cause carbonate compounds form, due to the decomposition of the bicarbonate ions when boiling.

The 2nd can be a bit more complicated. There is a machine called a water softener that doesn't clean water, per se. It just replaces those magnesium and calcium ions with the lighter, softer sodium ions. What the water softener does is run the water over a "resin bed." An area with a compound that reacts with the ions in the water, removing the bad ions and adding in the harmless ions. This resin bed does have to be regenerated, meaning as it reacts with the ions in water it loses sodium ions, and must be regenerated by reacting it with another sodium ion source, like sodium chloride solution (salt water).

A 3rd is an activated carbon deionizer bed or activated carbon filtering tube. Activated Carbon can be put into a container and all water can be run through it, removing silver ions.

A 4th is reverse osmosis.

Osmosis is when you have two solutions of the same chemical (like two solutions of sodium chloride.) but of different concentrations; separated by a semi-permeable membrane. According to osmosis, the concentration will head towards the less concentrated side, thus making them equally concentrated.

Reverse Osmosis runs on the opposite principle. A machine forces the concentration to go to the side with a higher concentration. So if you're trying to remove magnesium and calcium ions from water, you should put the solution next to a solution with a higher concentration of magnesium and calcium ions in it, separated by a semi permeable membrane is a reverse osmosis system. The R.O. System will force the concentration of ions over to the second solution, leaving your water pure. this also will remove chlorine ions, or any ion that you want.

A 5th and the final one I know about is distillation. To distill water, you heat it to the point of complete evaporation, then let the vapor reform on a cooled surface. What this does is allow the water to separate itself from anything that has a higher boiling point than the water. For example, if you dissolve salt into a pan of water, then evaporate the entire pan, the salt will be at the bottom of the pan because salt has a much higher boiling point than water. Then the water vapor can condense elsewhere, with no salt in it.

Answer 3

CHLORITSAFE (NADCC) TABLETS

Sodium Dichloroisocyanurate Tablets are widely used and demanded by various industries and even by domestic sector in order to purify the water for better usage. These tablets are very effective in cleaning and purifying the polluted or contaminated water. Several testing and experiments are performed to ensure the safety of these tablets and hence it is an assured point from the organization that there are no side or harmful effects of these tablets on human health. Sodium Dichloroisocyanurate Tablets are stable and single tablet has the tendency to purify large quantity of water in one go.

Physical Form: Solid

Grade: Industrial Grade

Purity(%): 99

Type: Water Purification Tablets

Supply Ability: As Per Requirement Per Day

Size of the tablet - 3.5 MG

Available Chlorine - 2 MG

Volume of the water to be treated - 1 Litre

Packing - 1000 Teblets

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Answer 4

1. flocculation

2. sedimentation

3. aeration

4. ion-exchange

5. reverse osmosis

Answer 5

distillation fractional distillation crystallization fractional crystallization sedimentation filteration decantation addition of chemicals

Answer 6

3 water purification methods are Distillation, Boiling water and Purification tablets

Answer 7

Purifying with a commercial micro filter

Chemically treating water with chlorine or iodine

Boiling vigorously for at least one minute

Answer 8

No filters or treatment systems are 100% effective in removing all contaminants from water, and you need to know what you want your filter to do before you go shopping (see Step 1) also the best water filter systems available. water treatment systems in Ireland Not all filters of a particular type use the same technology, so you should read the label carefully.