Kcp sugar industry
Dm plant
M.srinu 14096-ch-025
DM PLANT
Demineralisation is the process of removing
mineral salts such as cations of
Sodium,Magnesium,Potassium,calcium,Iron,
Copper etc.,
And anions such as
Chlorides,Sulphates,Nitrates,Bicarbonates,
Carbonates etc.,
In this content of water purification,Ion
exchange
is
a
rapid
and
reversible
process
in
In this content of water
which Impurity Ions Present in the water are
purification,Ion
exchange
is
a
replaced by Ions released by an Ion-exchange
rapid Impurity
and reversible
process
resin.The
Ions are taken
up by in
the
resin,Which
must be periodically
regenerated
which impurity
Ions present
in the to
restore
it
to
the
original
Ionic
form(An
Ion
is
an
water are replaced by ions
atom or group of atoms with an electric
released
by
an
Ion-exchange
charge.Positively -charged Ions are called
resin
cations
and are usually metals; Negatively
charged Ions are called anions and are usually
non-metals.)
ION EXCHANGE RESIN
There are two basic types of resin cationexchange and anion -exchange resins.
Cation exchange resins will release (H+)Ions.
Anion exchange resins will release
hydroxyl(OH-) Ions.
DM PLANT CONSISTS OF
1Solid Contact reactor clarifier
2Multi-Grade sand filter
3Activated carbon filter
4Strong acid cation
5Degasier tank
6Weak base anion
7Strong base anion
8Mixed bed
SOLID CONTACT REACTOR
In this clarifier mixed with
Alum,Polyelectrolyte,Hypochloride to remove the
solid particulates or suspended solids from water
for clarification.
Concentrated Impurities,Discharged from the
bottom of the tank are known as sludge,While the
particles that float to the surface of the water are
called scum.
MULTI-GRADE SAND FILTER
The Multi-Grade sand filter consists of a
multiple layer of sand with a variety in size and
specific gravity.These filters are designed to
remove turbidity and suspended particles
present in the feed water.
ACTIVATED CARBON FILTER
Activated carbon filter is the most common
method of treatment for dechlorination and
removal of Colour,Odour,Organic Impurities &
residual chlorine from water.
STRONG ACID CATION
Strong acid cation is filled with cation resin it is
used to remove the hardness cations from the
water.The resin is very efficiently regenerated
with an acid,usually HCL.The cation exchange
resin will release Hydroden Ions.
DEGASIER TANK
Degasier tank is a part of a D.M PLANT .It is
used for to remove the carbon dioxide in the
water.
WEAK BASE ANION
It is filled with weak base anion resin.The weak
base anion resin absorbs all the free mineral
acidity present cation treated water thus
producing substantially free from dissolved
salts.
STRONG BASE ANION
It is used for to remove the all the cations
from the water like Nitrate,sulphate etc.,
Regenerated with a Caustic soda(NAOH).
MIXED BED
The last traces of silica can be removed on a
resin bed where highly regenerated strong acid
cation and strong base anion resins are mixed.
The mixed bed units deliver an excellent
treated water quality,but are complicated to
regenerate.
Thanku