You will need to provide more information your wastewater e.g. volume and what else you suspect is in it e.g. fats/greases, metals, etc.

As for bubbling in oxygen, this is a non starter as if you want to treat/degrade the BOD/COD biologically you will need to inocculate the mixture with biomass and then provide a suitable clarifier to remove the biomass from the wastewater. The above is simplistic as you will need balance tank, blowers, RAS pumps, control systems, sludge storage tanks, etc, etc.

A feasibility study to determine both aerobic/anaerobic technologies, carried out by a local consultant should guide you through the process of avoiding mistakes!  Wastewater treatment is an expensive business.

Woefie:

On the presumption that your wastewater carboxylic residues are readily oxidizable, which you imply in your initial post and which is generally supported by your company's web site, there is an electrolytic-catalytic process that has reasonable CAPEX and very low OPEX costs that should provide the cleanup you require.

If this is of interest to you, please contact ECP International, LLC at water@infoecp.com for a means by which this process can be performance demonstrated.

Orenda

Christophe,
                You haven't given any guidance on the quantity of this material you need to treat or the timespan for treatment. If time is not of the essence it should be possible to set up a simple batch treatment process to deal with this material. This would involve biological treatment and if this is of interest I would be happy to discuss in more detail.

Best regards,
Cgillen
cgillen@biofuture.ie

The solution is MBR . For more information please contact
Elcode Engineering &  lilianur@netvision.net.il

Good Evening Christphe-
As Orenda noted, if the primary carboxylic acids are oxidizable, the oil and grease residual proves no problem - then electrolytic treatment may be the simplest and cheapest issue for treating in 1000l batches. Peroxide can be hazardous to handle and store - it is extremely caustic -eating through metal and concrete as the solutions are normally 35-50% solutions. Ozone is impractical in a working environment where dust and dirt can clog air intiake filters rapidly, and the main labor force is untrained. Perozone - the use of ozone with peroxide injection is even more difficult and requires more labor and monitoring. Electrolytic process would not require trained help nor caustic chemical addition - maybe some enzyme concentrate to help oil/grease breakdown - but your talking small amount - like 2-3 ounces per 10,000 gallons of wastewater. Then it's a simple time and rotation of each 1000l as a batch.

I agree that a more indepth analysis of the water is required - and that should be provided to any of the parties you respond to here.

Biological action may be required - again, depends on the oxidation potential of the carboxylic acid - if so, then you would want a small, highly aerobic system - much like Honeywell-Xceeds ICB with pretreatment by electrolytic oxidation. Both ECP International and Honeywell-Xceed can address the issue with you directly. If you need a contact at Honeywell -just let me know - though ECP International does joint-applications with them.

A simple bench/lab test will determine if the acid is oxidizable - just  add a small amount of 25% hydrogen peroxide to a beaker of the wastewater - if the COD drops - it's oxidizable. Does not mean you have to reach COD of "0" mg/l - and probably won't - it's just a simple test to determine the reaction. Then you'll have a better handle on which way to proceed -

It would also help if you can provide how/where the treated wastewater would be discharged - ground/river/municipal sewage, etc.

Regards,
Dave Orlebeke
Aquatic Technologies
www.eoh20.cm