Waste water from a bakery containing sulfides
Published on by Josphat Mukindia in Technology
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?
Taxonomy
- Industrial Wastewater Treatment
- Industrial Water Treatment
- Industrial Water Treatment
- Food Processing
- Bakery Products
- Bread
- Pastries
3 Answers
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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
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1 mg/L H2S requires 5 mg/L O2 = H2O + SO4, see sulfur cycle chart for chemical/biological reactions.
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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.