Water purification

Water purification System

The water purification is the process of removing contaminants from raw water which is polluted by a mixture of the halogenous compounds, preferably hydrocarbons. The major portion of water is purified for human consumption. The water purification can also be conceived for a variety of other goals, including the fulfillment of the requirements of the medical applications, pharmacology, chemical and industrial purposes. The methods of water purification include distillation, ionic exchanges, reverse osmosis, adsorption of Activated-carbon, micro porous filtration, ultrafiltration and Photo-oxidation. The water purification removes sand particles; the micro organic materials like Giardia; Parasites; Cryptosporidium; virus; bacteria; algae and the minerals like calcium, silica, magnesium, and toxic metals such as copper; chromium plate etc Of the purification process, a few may  be elective purification, including the odor, the taste, and the appearance.

Modern water purification is very different from the past because they are known to be very advanced and powerful which always ensures clean drinking water. Usually the purification takes place when water passes through the filter where all particulate substances and impurities are blocked and at the end you are left with only clean and pure drinking water. We can find various types of water purification systems matching our needs and conditions. The modern water purifiers are very powerful and advanced in purification were the water is purified up to 98%. Distillation is probably the oldest method of water purification. Water is initially heated by boiling. The steam rises to a condenser where the cooling water lowers the temperature thus the vapor is condensed, gathered and stored. The majority of the contaminants remain with in the liquid phase vessel.

The membrane filtration process of separating dissolved salts from water is called Reverse Osmosis (RO). In the RO, not only the insoluble particles maintained by the membrane but also of the molecules and the ions in solution are maintained. The continuous movement of water under a high pressure (>200 delivers per square inch) rinses the membrane, which removes the ion concentrations from it. The carbon absorption is a usual employed method of treating water at the house because of its capacity to improve water by removing the unpleasant taste and odors, including reprehensible chlorine. The activated carbon effectively removes many chemicals and gas, and in certain cases it can be effective in removing micro-organisms.

The exposure of intense ultraviolet (UV) radiation in water systems kills the pathogenic bacteria virus. Since UV is not a physical filter, the particles suspended in water such as bacteria and virus may not be affected quickly. That is why good UV systems have the ceramics cartridge as pre and final filters. Heat produced due to boiling kill the micro-organisms probably at a temperature of boiling point. The boiling of water is rather hot and long enough to disinfect it. The chemical disinfection of water helps in the massacre of the bacteria, Giardia, amoeba, and the viruses by the chemical. Halogens such as chlorine and iodine are generally used for this purpose. The important point to be remembered in the effective massacre of the chemical depends on the concentration of the chemical, the temperature of water, and the time of contact. The sediment increases the need for halogen.

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