Published by Josphat Mukindia
Waste water from a bakery contains sulfides (possibly from eggs). Can oxidation take care of the sulfides in the water?
If yes, and the owner employs a blower/diffuser to increase oxygen in the water, how much air needs to be blown into the water to oxidize 1kg of sulfide?
Hi Josphat,
Just a couple of questions to get a better picture of your application:
Are the sulfides soluble or insoluble?
Oxidation using air tends to be very quite slow. Are you able to offer a large retention time in your existing process?
Why do you need to remove the sulfides?
Regards,
Daniel
Published by Daniel Couton, Process and Environmental Chemist
1 mg/L H2S requires 5 mg/L O2 = H2O + SO4, see sulfur cycle chart for chemical/biological reactions.
Published by John Salonich, Vice President / Managing Director
Why do you need to oxidize the sulphides? The soil needs sulpur so it is more a question of sulphur concentration in the waste water, sulphur levels in the soil and application rate.
Published by Jim Boak, Agricultural advisor at GLIER University of Windsor. Independant Agriculture and Environmental consultant