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GROUP 3

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GROUP 3

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  1. TOPIC TOPIC WATER AND ITS WATER AND ITS TREATMENTS TREATMENTS • PRESENTED BY PRESENTED BY • 1. CH.MANMOHAN 1. CH.MANMOHAN • 2. B.DINESH 2. B.DINESH • 3.A.SAI VARDHAN 3.A.SAI VARDHAN • 4.A.PRAVEEN 4.A.PRAVEEN • 5.A.ASHISH 5.A.ASHISH

  2. Introduction to Water and its Treatment Water treatment is Water treatment is any process that improves the quality of water to make it any process that improves the quality of water to make it appropriate for a specific end appropriate for a specific end- -use. The end use may be drinking, industrial use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment. other uses, including being safely returned to the environment.

  3. THREE COMMON COMMON WATER WATER TREATMENT TREATMENT METHODS: METHODS: Reverse Osmosis Water Filtration Reverse Osmosis Water Filtration Reverse Osmosis Reverse Osmosis is a process where water pressure is employed to force forcewater through a semi-permeable membrane.When water is forced against the reverse osmosis membrane surface, the dissolved materials are repelled, while the water molecules are diffused through the membrane molecule by molecule, forming purer water on the other side. This "reverse osmosis" method is a popular method for the reduction of contaminants in water.

  4. 2. Ultraviolet Water 2. Ultraviolet Water Sterilization and Filtration Sterilization and Filtration Ultraviolet Ultraviolet::Sunlight has long since been Sunlight has long since been known to kill microorganisms. The rays known to kill microorganisms. The rays from the sun contain the UV spectrum from the sun contain the UV spectrum used in Ultraviolet Water Treatment used in Ultraviolet Water Treatment Systems Systems – – although at much lower although at much lower intensities. It is also referred to as either intensities. It is also referred to as either the Germicidal Spectrum or Frequency. the Germicidal Spectrum or Frequency. The frequency used in killing micro The frequency used in killing micro- - organisms is 254 nanometers (nm). The organisms is 254 nanometers (nm). The UV lamps used in water treatment are UV lamps used in water treatment are designed specifically to have the highest designed specifically to have the highest amount of UV energy at this frequency. amount of UV energy at this frequency.

  5. 3. Filtration Filtration is a process in which water passes through a water system that may include one or more filters for the purpose of removing turbidity, taste, color, iron or odor. The design can be loose media tank-type systems or cartridge devices. In general the process may include mechanical, adsorptive, neutralizing and catalyst/oxidizing filters.

  6. What is the best treatment for water? Reverse osmosis is the best option, whereas filtering is good for basic water tasks such as sediment and chlorine removal. Reverse osmosis covers a larger spectrum of contaminant removal.

  7. Conclusion Water treatment facilities are designed to speed up the natural process of purifying water. With billions of people and even more wastewater, the natural process is overloaded. Without wastewater treatment, the amount of wastewater would cause devastation, as it still does today in developing countries.

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