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Post on 01-Jan-2016
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How each person is wasting water ?
Home – kitchen waste Industries – chemical waste Daily process – bathing , shaving Mining waste - minerals Hospital waste –blood , chemicals
The waste from above all areas is called as the
SEWAGE
Sewage has dissolved and
suspended impurities called CONTAMINANTS
OR POLLUTANTS
Sewage is made up of following constituents
ORGANIC IMPURITIES e.g. urine, waste from kitchen, animals, plants, pesticides
INORGANIC IMPURITIES e.g.phosphates,nitrates,metals like iron, copper
NUTRIENTS e.g. nitrogen, phosphorus BACTERIA & MICROBES e.g. typhoid microbe
FILTRATION
Removing the impurities and contaminants
CHLORINATION
Use of chlorine to clean water
PURIFICATION OF SEWAGE
SEWAGE ORWASTE WATER
USABLE WATER
SEWAGE TREATMENT PLANT
SEWAGE TREATMENT PLANT/WASTE WATER MANAGEMENT
A process of removing pollutants or contaminants from waste water.
IMPORTANCE OF WASTE WATERtreatment
• The treated water from the sewage treatment plant is discharged in sea, river for further purification .
• The treated water is used for agricultural activities like irrigation .
GOOD HABITS OF USING WATER
• Turn off the tap while brushing.
• Mop the floor instead of washing.
• Repair the leaking taps or inform the elders.
• Solid food remains should be thrown in the dustbin
• Cooking oils & fats should not be thrown down the drain – blocks the drain
• Chemicals like paints, solvents, medicines kill microbes that purify water
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