What you can see in this pictures?

DO YOU KNOW FROM WHERE WE GET CLEAN WATER? STREAM WATER TAP WATER

RAINFALL WELL WATER

Can we drink this water ?

This dirty water is called as

WASTE WATER OR SEWAGE

Different sources of waste water

Industrial waste Run off

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