Reverse Osmosis Water Treatment (RO) is normally used as a pre filtration system ahead of waster di-ionization system. To avoid membrane fouling in this application a softener and Sodium Bisulfate as an oxidizer is also used to protect the membrane. The application of this technology in wastewater has not been quite popular due to extensive pre-treatment requirement.
gmp
WW Flow Rate, Qww =
gal/day
Moles/L of OH– needed =
moles/L
Incoming pH, pHin =
NaOH rate needed =
moles/day
Desired pH, pHout =
Caustic solution rate =
lb/day
Caustic sol’n % NaOH =
Caustic solution rate =
gal/day
Caustic sol’n density, ρ =
lb/gal
Daily cost of caustic =
$/day
Caustic solution cost =
$/lb
gmp
WW Flow Rate, Qww =
gal/day
Incoming pH, pHin =
Desired pH, pHout =
Caustic sol’n % NaOH =
Caustic sol’n density, ρ =
lb/gal
Caustic solution cost =
$/lb
Moles/L of OH– needed =
moles/L
NaOH rate needed =
moles/day
Caustic solution rate =
lb/day
Caustic solution rate =
gal/day
Daily cost of caustic =
$/day
gmp
WW Flow Rate, Qww =
gal/day
Moles/L of H+ needed =
moles/L
Incoming pH, pHin =
H2SO4 rate needed =
moles/day
Desired pH, pHout =
Acid solution rate =
lb/day
Acid sol’n % H2SO4 =
Acid solution rate =
gal/day
Acid sol’n density, ρ =
lb/gal
Daily cost of acid =
$/day
Acid solution cost =
$/lb
gmp
WW Flow Rate, Qww =
gal/day
Incoming pH, pHin =
Desired pH, pHout =
Acid sol’n % H2SO4 =
Acid sol’n density, ρ =
lb/gal
Acid solution cost =
$/lb
Moles/L of H+ needed =
moles/L
H2SO4 rate needed =
moles/day
Acid solution rate =
lb/day
Acid solution rate =
gal/day
Daily cost of acid =
$/day
