save our earth

please plant

Use of automobiles should be

minimized. Industrial smoke must

be filtered before releasing into the

atmosphere. By planting more trees to

get pure air (O2) and reduce the CO2 content in the environment.

IN future

Water pollution reduces the amount of fresh water that is available for agriculture,drinking,swimming,fishing the wastages coming from industries and farms mainly from leather industries affect the water resources in rivers .

water pollution

water  pollution

 UNO announced the river paallar in tamilnadu  has been listed among top five rivers in the world to be polluted more and more hazardous to the human beings who use this water.

Because, the river paallar contains some very small amount of cyanide.

river paallar would be like this

This river is mainly polluted by industries. These industries releases their wastages directly into the river.

THEN HOW TO PREVENT THIS RIVER ?

Cleaning of water is a process of

removing pollution before it enters

a water body. This process of waste

water treatment is commonly known

as Sewage Treatment.

 Waste Water Treatment Plant

Treatment of waste water involves physical, chemical and biological

processes.

1. At first, waste water is passed through bar screens.

2. Large objects like sticks, cans and plastic packets are removed.

3. The water is then passed through a grit chamber in which sand

is removed.

4. The water is then allowed to settle in a large tank.

5. Solid materials settle at the bottom.

6. Then the water is transferred to the next tank having a skimmer. This

skimmer removes the floating solids like oil and grease.

7. Next, air is pumped through water in an aeration tank to help aerobic

bacteria to grow. The bacteria consumes unwanted matters that still

remain in water.

8. The treated water has a very low level of organic material and suspended matter. It is discharged into a river.

                                                                                                                      water sewage treatment

Over a millions of tons of oils deliberately discharged into world’s oceans

Every year by tankers by routine cleaning of their tanks

                                                                   A sea bird get covered in oils is obviously in great distress,because oil covering the waxy covering of its feathers causing it to became water logged and often todrown or die of cold.

air pollution

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THERE ARE THREE WORDS  TO CONTROL  ANY POLLUTION  IS:

  1)REDUCE

  2)RECYCLE

  3)REUSE