Desalination Pretreatment: Dechlorination
|Dechlorination ca be processed by 2 processes: |
The dosing rate is 3:1 of SBS:Cl2 (active chlorine dose). The reaction time is about 2 minutes.
NaHSO3 + Cl2 +H2O --> NaHSO4 + 2 HCl
Na2S2O5 + Cl2 +H20 --> Na2SO4 +SO2 + 2HCl
Chemisorption process where chlorine reacts with the carbon surface.
CL2 --> Cl-