Conserving Water:Rainwater Harvesting, Water, Class 6 Science Video Lecture

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when when we are talking about
conserving water a very interesting
concept is rainwater harvesting that is
how we can utilize the rainwater for
various purposes so what is rainwater
harvesting it is collecting rainwater to
be used later for various purposes now
when we see various purposes it could be
for cooking for washing clothes or
working for TV
so variety of purposes now when it rains
should we get a lot of water a lot of
water gets collected order new thoughts
there are a lot of waterfalls on in the
bathroom music on houses everywhere and
what happens to that water it gradually
gets into the drain nearby drains from
there it goes into the river and then he
being linked directly we receive the
same one so instead of doing that
how about it be if we directly store
that rainwater we didn t store it in our
houses and then we use the same water we
feel a rate we clean it and then they
use the same water directly for so many
purposes so in that is unnecessary if we
do not need to do all these indirect
process to get the same order back from
rivers it's a very simple thing that is
in that so what we do is we keep a
storage tank we design a storage tank
and then we ensure that all the water
that falls or they do for our houses
they get collected in that tank so that
rainwater gets connected and then that
rain water is cleaned purified and then
stored there
now as and when it is needed that is
supplied to the caps of our houses so
that's such a nice way of utilizing the
rainwater collected so this is how it
works let's say this is your building
this is the roof of your building so
what you have is now when when it rains
so water flows from the cemented area of
the roof top ruthlessly in water storage
tanks
you have a set of pipelines which are
arranged in a specific way so that what
they very very veins were so the water
will pass through these pipes and it
will get stored in this green water
storage so you have a big tank here to
store the rainwater now from here it
again passes to another tank and then
you have some arrangement where you have
a filter so this filter will remove sand
or any other dirt or dust which is
present in the water to make the water
usable for daily activities and then
water after a certain level is allowed
to flow freely into the soil so then
this water passage to the main that so
then you have the main tank if you say
here from the main tank there are two
ends it is one inside this there is
another exit this which is connected to
the pump so certain amount of water
flows into the soil so when you are
allowing water to pass into the soil so
that water is basically being stored as
groundwater which is a an equally
important for us so that next time when
we did a well in the nearby area we get
some water so that is you will increase
the groundwater level but a minimum
level of water is maintained in the cap
so whenever let's say you say that okay
I have just an example say you want that
if I keep X liters or let's say 500
liters of water should be blessed with
an mean that so and what is an excess
amount of water you have after this 500
meters all that we get into them so I so
they will be allowed to pass into the
soil so there is a bulb which is
attached here you have a valve here
which allows water to pass from the main
tank into the soil but it doesn't allow
soil to pass on to the main tank for
that but because you have a one so that
it allows only uni-directional
only flow of water in one direction not
in both directions so that's how you
maintain clean water storage in the main
tank so anytime you have some amount of
water using the water rather in the
so now this musical water is taken up by
the pump and then if it is it comes to
our kitchen bathrooms as and when needed
so even if it is an apartment let's say
it's a 10 story building so the pump is
able to pump the water it in the 10th
floor ninth floor first row second so
this is an excellent way by which you
can typically use in water for a lot of
your day-to-day activities
now the question is why rainwater
harvesting by doing we do this because
the rain water otherwise if we don't do
this then what happens to the rainwater
it passes through the drains will do the
rivers and lakes so and then what
happens again it will be the sea water
from the river segments so why don't you
want to use whole bunch of topics
complete things let's didn't introduce
there any water more of it in a rural
areas it is a very difficult piece in
the urban areas you have basins in your
more actionable tips what is the easily
accessible but when if you go to the
rural areas small towns it is very
difficult to get water in from rivers
for household purposes fetching water
becomes a very tedious have so many
people manually doing so they carry
their buckets to deliver and then they
got it in their home so water gets dirty
it's a long process it is long process
which is people leave the water so that
means it is not a very wise decision to
let the rain water flow into the range
rivers and lakes so rainwater harvesting
has its own advantages and these
advantages so in terms of advantage it
is very easy and affordable not very
high maintenance cost maintains high
ground water level because we allow some
amount of water to flow into the soil so
that means we are also increasing the
level of ground water which is
indirectly going to help us in terms of
these advantages it is restricted we
inform which is uncertain so
as I said that rainfall is very
frequently with monsoons but not even
suffers saying summers rainwater
harvesting is not going to be of any use
regular maintenance needed ends and
result in bust because now the water
that is being stored in the tags those
fans need to be political reasons
otherwise stagnant water might eat to
what we do and then the sweetest end
result in diseases so that means these
are some of the disadvantage we design
importance that cleanliness need to be
taken care however there is a one-time
installation cost involved for rainwater
harvesting but otherwise the maintenance
cost is not that high and this is
extremely beneficial for agriculture
household purposes as well as industrial
purposes thank you please visit
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