TO WATER TREATMENT & ABSTRACTION
works & pumping stations
The animations & information below relate to actual sites.
The treatment works produces up to 16 Ml/day.
& pumping stations
Water is pumped via low lift pumps through an aerator &
into DAF filters.
certain chemicals are added at this point these are chlorine
(for disinfection) caustic soda or Kalic lime (for pH correction)
& ferric sulphate or
poly aluminium chloride (a coagulant).
As the water enters the DAF filters a blanket of air bubbles
is injected into the water this forms a blanket on the
top of the
filters known as a floc.
The clean water passes through the base of the
filter and moves by gravity to the contact tank
additional water treated
by the GAC filters also enters the contact tank at the same point.
to going into the Contact tank further treatments (chlorine & caustic soda)
take place to ensure the water meets the treatment parameters.
is then pumped via the high lift pumps to A service reservoir. The final water
is checked by instruments to ensure it is within parameters.
The picture below shows high lift & low lift pumps as green
circles, Generally pumps that move water from reservoirs to other parts of a
treatment works are called Low lift pumps.
Pumps that transfer water from
a treatment works to a service reservoir are called High lift pumps.
The picture below shows the pumps as green circles.
that transfer water from service reservoirs are normally called booster pumps.
The water from the treatment works is pumped into A large service reservoir
& from there It is distributed to the public.
This distribution can
be by using pumps or gravity.