3.de mineralisation
TRANSCRIPT
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DISSOLVED SALTS
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DISSOLVED SALTS
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One in Ten Millionmolecules of
Water is ionizedinto Hydrogenand Hydroxylions
esidualconducti!ity ofWater "#"$ microsiemens%cm#
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SO&TE'I'(
)reci*itation of )racticallyinsolu+le su+stances from
A,ueous solutions is of ma-orim*ortance in Water Treatment
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SOL./LIT0 )OD.1T
- )roduct of t2e concentration ofdissol!ed ions at a gi!entem*erature 3 A 1onstant
E4AM)LE
Mg SO$ Mg5 55 SO$33
'a OH 'a55 OH3
MgSO$5 6'aOH Mg7OH86 5
'a6SO$
SOL./LIT0 )OD.1T O& Mg7OH86
9:x;"3;;at 6"o1
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(E'EALL0 THE EA1TIO' WILL/E DIS)LA1ED I& O'E O& THE)OD.1TS O& EA1TI' IS
;# S)AI'(L0 SOL./LE
CaCl2+ Na2CO3 2Nacl + CaCo3
S)I'(L0 SOL./LE
6# O'L0 SLI(HTL0 DISSO1IATEDNaOH + Hcl Nacl + H2O
SLI(HTL0 DISSO1IATED
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SOL./ILIT0 O& I'O(A'I11OM)O.'DS
I' WATE1OM)O.'D
1a7H1O
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SODA LIME )O1ESS
1a7H1O
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DIS1OVE0 O& /ASE
E41HA'(E ('H$86SO$ 5 1a 1aSO$5
7'H$86
SOIL I' 1AL1I.M SOIL I' AMMO'I.M
&OM &OM
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EOLITES O (EE'
SA'DS- Minerals ex2i+iting 2ig2 ca*acity of
ion exc2ange
- .nsta+le in acid or alBaline conditions- .se generally limited to neutral Cater
- 1a 5 6 'acl 'a6 5 1acl6
.SED I' /ASE
E41HA'(E
)O1ESS
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S.L)HO'ATED 1OAL
- Ion exc2ange material *roducedfrom certain ty*es of coal treatedCit2 26so$
- Sta+le o!er Cide *H range
- Ha!ing greater ca*acity o!erzeolites
CaCl2 + H2Z Ca Z + 2 HClS.L)HO'ATED
1OAL I' H6&OM
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SO.1E O& AW WATE3DEE) /OEWELL
1ATIO'S AS 1a1O< A'IO'S AS 1a1O