I am a final year chemical engineering student and I'm working on a tannery waste water treatment design project.
I am supposed to design and size a precipitation unit. The reactants are calcium hydroxide and chromium(III) sulphate ( precipitating chromium out). Can you please advise me if a mixing tank or stirred tank is sufficient for this process. And Right after this unit i have a settling tank to remove the precipitate.
Inlet flow : 1,727,741 kg/day
Outlet flow: 1,728,395 kg/day
Lime added: 654 kg/day
Inlet temperature: room temp
Outlet temperature: 297 K
Enthalpy : -8,196,232 kJ/day (endothermic)
Please advice me of any books that has info to design this.
P.S. I have tried Coulson and Richardson and David Hendrick's book on water treatment unit processes.