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Engineering HSC and
IIT-JEE Mains and advanced videos. Hello
students today will be studying chapter
microbes in human Welfare in that we are
doing topic Sewage Treatment Steps in
this part of the chapter will be
studying how muncipality cleans the
wastewater that comes out of your house
using various steps and microorganisms
as well.
Sewage Treatment Steps they Sewage
that comes out from your house is not
directly treated there are various steps
or parameters which goes in Sewage
treatment or wastewater treatment the
first process is primary treatment now
during primary treatment all the solid
waste is removed when I say solid waste
it means paper plastics pebbles or
construction waste once physical removal
of waste has done the next process is
filtration and sedimentation
now during filtration what is done is
all the solid particle like soil the
food products plant waste is removed
using filtration filtration is nothing
but a sieve clip is present and through
this YouTube based aspire now once
filtration is done the waste is
subjected to sedimentation sedimentation
is nothing but under the influence of
gravity some base particles like cement
or dead decaying organic matter settles
down once physical room or or primary
treatment is done the next process is
secondary treatment from the primary
trying the waste is transferred into
secondary times inside secondary time
the waste will have lot of food matter
and now to reduce this food matter or to
decompose this four matter what has done
is oxygen is added inside those time and
the tank is shaped vigorously when you
have oxygen inside the tank and you
shake the tank vigorously microbes will
grow obviously and this microorganisms
are nothing but aerobic microorganisms
this Arabic microorganisms consumes the
organic matter when I say consume the
organic matter it means these
microorganisms will feel on the food
particles consume the food particles and
release energy and in this process our
food particle or organic waste is
reduced completely so during the primary
treatment all this solid waste just
remove and during the secondary
treatment all the food waste is removed
after the secondary treatment the
wastewater will only have chemicals and
certain compounds which is subjected to
partial treatment or the chemical
treatment the final
treatment which will also include Bude
biological oxygen demand so let us see
the steps in Ch treatment
the first step in CIA's treatment is
primary treatment during primary
treatment physical removal of solid
particles are done from the waste this
solid particle could be Stubbins pebbles
plastic etc primary treatment is
subjected into two parts the first one
is filtration and the second one is
sedimentation filtration is done using
large biological filters and
sedimentation is done using gravity
under the influence of gravity waste
materials are subjected
secondary treatment of sewage treatment
wastewater from primary tank is passed
into secondary time basically the
effluent is passed into secondary time n
is pumped into wastewater aerobic
organisms grow on waste and heat for
particle status organic waste into the
secondary tank air is passed and pin air
is present and what food is present
obviously organisms will grow and the
organisms which use oxygen to grow and
nothing but aerobic microorganisms as
viola this aerobic microorganisms
decreases the load of organic waste or
the food waste and once food waste is
completely reduced and during primary
treatment the solid waste is reduced
then the waste water or this matter is
subjected to the final step and the
final step is tertiary treatment which
cleans the chemicals present inside
water so students in this part of the
chapter we have studied the various step
of serious treatment I hope you all are
clear about the steps of sea waste
treatment thank you
