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?????????????????????????? (Water treatment Processes)

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Title: ?????????????????????????? (Water treatment Processes)


1
?????????????????????????? (Water treatment
Processes)
  • ????????
  • ????????? ?????????? 4405120
  • ??????? ???????? 4405430

2
??????????????????????????????????? ???
????????????????????? ????????????????????????????
?????????????????? ??????????????????????????????
?????????????????????? ???????????????????????????
??????????? ?????? 1 ?????????????????????????????
???????????????????(??? Johnson division,1975)
3
????????????????????????????????????????????? 4
????????????????? 1 . ????????????????(water
softening) ????? 3 ?????????????? ? . Boiling
???????????????????????? Ca(HCO3)2 Ca
2HCO3 CaCO3 H2O CO2
4
?. Lime-soda process ????????????????????????????
????? ???????????? softening ????????
??????????? Ca (HCO3)2 Ca(OH)2
2CaCO3 2H2O
Hardness Lime Mg (HCO3)2 Ca(OH)2
CaCO3 2H2O
Mg(OH)2 ???????????????(Non-carbonate hardness)
??????????????? MgSO4 Ca (OH)2

Mg(OH)2 CaSO4 Hardness Lime
Hardness CaSO4 Na2 CO3
CaCO3
Na2SO4 Hardness soda Non-hardness (S
oluble)
5
?. Base exchange ???? Zeolite softening
?????????????????? Zeolite (sodium aluminium
silicate) ???????????? Na ??? Zeolite
???????????? Ca ??? Mg ?????????????????????
????????? Base exchange ??????????????????
Ca, Mg (HCO3)2,SO4, Cl Na2Z Na2
(HCO3)2,SO4, Cl (Ca, Mg)Z Hardness
Zeolite Non-hardness ??????? Na?? Zeolite
???? ??????????????????????? ??????? NaCl
solution(strong) ?????????????????? (Ca, Mg) Z
2NaCl Na2Z (Ca, Mg)Cl2
6
3. ????????????????????????(Iron and manganese
removal)?????????????????????????? oxidizing
????????????????? ??????? 2 ?????????? ?.Aeratio
n ?????????????????????????? ?????? Fe2
????????????? Fe3 ???????????????????????????????
????????? 2 .??????????????????????????????????

7
???????????????????????? ?????????????????????????
????????
8
?.Manganese greeensand (Glanconite sand) ?????
Glanconite sand ???????????????????? Manganese
sulfate ??????????????????????????? Manganese
greeensand (Glanconite sand)
9
????????????????????????????????? (Disinfection)
  • Chlorination
  • Ultra- Violet ray treatment
  • Pasteurization
  • Ozonization

10
????????????????????????????????Demineralization
  • Ion exchange method
  • Electrodialysis Process
  • Reverse Osmosis
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