Burdwan
thirty thirty thirty
thirty thirty one among the
well researched
thirty thirty
hour wildlife depends upon clean water for exist.
The
or the herbs
and this kind of fishing is successful only in clean water the
girl urged
green rather is essential for livestock
and for irrigation It is also necessary for commercial fishing
or ice to.
And salmon
and all types of freshwater fish fish shakes need clean water
to hatch fingerlings need clean water to grow into trout to challenge the
sportsman's kill from the beginning of time our rivers like
the seven scenes have been arteries of transportation factory sites may be
chosen because of the availability of sufficient clean water a vital factor in many
industrial processes
and most important our natural wonders are the major source of our drinking water
in fact seventy five when our most invariably man settled near the water.
He needed water for is domestic use where food production.
Where is industries
where
and for transportation bringing
your water is communities dumping their waste matter their sewage into the streams
for easy disposal why that's creating the serious
problem of pollution one problem which has grown increasingly serious as
communities have increased in size.
You we pride ourselves on our high sanitary
standards.
Yet we deliberately make open sewers of our waterways where
what clean clear waters
that were once so friendly and useful become greasy
and they're all smelling scum forms on the surface
floating Matthew Rogers on the shores of the creek with layers of rotting waste
once attractive residential districts have declined in value
bathing beaches I'm swimming holes are closed
but the terms of water borne diseases typhoid fever.
Carrara dysentery
and other intestinal infections thrive in polluted water
or are these deadly sewage bacteria are frequently carried long distances
by blowing screens sometimes contaminating drinking water supplies
and rendering them dangerous to public health.
Remember that three fourths of our communities take their writer from likes
and stream drive stock pastured near polluted water may become infected.
German festive shellfish taken from contaminated waters are a menace to have
sewage many a sportsman's paradise threatened with destruction
or has already been destroyed by the pollution of our streets
alluded waterways hinder shipping the farming
and rusting bulbs entire
communities have suffered from hydrogen sulfide fumes from polluted water these
pilgrims are not only disagreeable.
But are also destructive to the paint on buildings industrial plants needing a
kind of a surprise clean water will not rotate along polluted streams.
Are these calamities are caused by the tremendous quantities of sewage
and other wastes constantly poured into right in London coastal waters
but it's form a science
and oysters more than doubled in price because of pollution at one time.
Millions of pounds of salmon were taken each year from twenty eight streams along
our North Atlantic seacoast today
that if we fill the streams yield any of this valuable food
and gain face enormous places along our coasts
see bathers
or for us to travel many miles to find water is not contaminated in
one West Coast area.
An estimated fifty four million additional miles are traveled each year by people
whose home beaches are pollutant.
A beach resort on an eastern shore which cost five million dollars
and gave pleasure to thousands of people.
Was made on unfit for use as a resort because of pollution
the recreation
and economic rushes due to pollution affect the lives of every one of us
in the United States Public Health Service says the notion of our natural water
costs the country more than one hundred million dollars annually exclusive of many
important intangible losses all of these losses can be avoided
through sewage treatment an economical and effective process.
What raw sewage the collected wastes of the community is channeled into the
plant modern efficient treatment plants employing
processes developed by sanitary and consulting engineers
and equipment manufacturers remove the polluting materials
the exact process used depends upon the various factors of the final product is in
all cases the same clear water which can be turned back into the stream without
harmful effects complete sewage treatment consists of two major steps
primary treatment and second.
Very tricky the primary treatment included the mechanical
removal of solids which will settle
it starts
when the raw sewage enters the plant in a typical plant the
sewage first flows through
and mechanically cleaned by a screen which removes any course material
that might damage the pumps
or other equip the
sewage then passes slowly through the grid removal Basin allowing the grid to
settle out
and here the sewage is lifted into a settling tank by pubs the pumps are
usually driven by electric motors such as these settling tanks very in design
but the purpose is the same
here the speed of flow is greatly reduced.
Let the suspended organic matter settle to the bottom sometimes chemicals are added
to help sedimentation the settled matter
called sludge is pumped to an enclosed unheated Justin tank
in the detesting tank kept for bacteria which thrive without oxygen reduced the
sludge to a useful humus like residue this process generates a gas
that may be burned a friend a sheet
or a power to operate parts of the system after the gesture
and the sludge is dried or the latter.
This may be done by spreading it on.
Fan vents to dry by evaporation
maybe more rapidly dried by mechanical process
the dried sludge is useful as fertilizer.
But unless he treated it should not be used on vegetables that are eaten raw
or the steps then comprise primary trick
screening grip settling settling of silence sludge did gesture
sludge drying and sometimes carnation R.B.F.
Not the secondary
treatment includes the biological transformation of any organic matter remaining in
the liquid
that was drawn from the top of the primary settling tack this liquid is treated in
a filter which triggers an overrun on which live bacteria
that thrive in the presence of oxygen
or
or this may be done by any of several filtering
methods which allow these oxygen loving bacteria to oxidize the remaining organic
matter and Pragya lake the solid matter into clumps which will settle out.
Are it may be done by the activated slider process in which large quantities of the
air are plans for the liquid to which a bacteria culture has been added
the air flow in from any of these processes may be drawn up into a tank for final
settling. The remaining liquid after any further necessary filtering
or chlorination is a clean that won't which can be discharged into a stream
or a body of water
but almost all the dangers of pollution removed of course the safer drinking
surface water from any source must be treated further in a modern water supply
system this
successful transformation of raw sewage into clear clean effluent
is accomplished in a specially built especially equipped
and efficiently operated plants
that have been developed largely within the past fifteen years.
There were only sixty such plants in one thousand nine hundred one thousand nine
hundred ten there were three hundred their numbers grew until by nine hundred forty
five there were over six thousand plants in use
but at the same time.
Thousands of other communities were installing sewers for the first time
and turning their untreated waste into our waterways.
So today our public health service officials estimate
that there is a pressing need now for more than ten thousand new plants
and in addition a large number of the existing plants are in Adam
and this great need for a fish
and sewage treatment exists in almost every community so
on as we had nor this need pollution will manage health.
Rob us of food reduce property values.
Take away our stroller wildlife
and add greatly to the difficulty and cost of providing same city water supply.
What.
Adequate treatment of sewage will eliminate these dangers handicaps
and losses from pollution collaborative planning by the communities in your
area would be required to coordinate then develop the broad programs needed for
adequate sewage treatment our water heater dissatisfied the nation's present
and future needs refineries sound public works programs
and will provide employment but thousands of workers at already estimate.
That on a national the saving of the one hundred million dollars last annually as a
result of pollution would very nearly pay the entire cost of the construction
program.
The result will be the return of our inland
and coaster waters to their original natural state so
that they may again be unhampered in performing their natural functions in our
industries supplying our food providing recreation
opportunities nearer home.
The conservation of our nation game
when caring for our welfare in many different ways
and the price of the waters the surging surf combing breakers
the tumbling gleaming cascades of mountain torrents the placid deep.
Flowing rivers the gentle lapping at the shores of inland lakes.
Well again fine vibrant joyous expression
and the merry bubbling of the brook
and renew the age old prophecy murmured by its clean clear water by wind
power and in
and out with here a Brussels sailing
and here and there a lusty trout and here
and there a grayling and draw them all along
and stroll to join the brimming river for
men may come a man may go but I go on. While I'm.