please plant |
Use of automobiles should be
minimized. Industrial smoke must
be filtered before
releasing
into the
atmosphere. By planting more trees to
IN future |
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 |
t
THERE ARE THREE WORDS TO CONTROL ANY POLLUTION IS:
1)REDUCE
2)RECYCLE
3)REUSE