Dear Aquablu,   You could ...

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Dear Aquablu,
 

You could use the RO after remove the COD and the system solids.

 

In most of the cases the most economical path to remove the COD is biological. Maybe in this case the COD could be remove (if it is not recalcitrant) using the biological way.

 

I think some of the steps that could be explored are:

 

COD removal (Biologic1: Anaerobic or MBBR Aerobic) >> COD removal (Biologic2; MBBR) >> AOP (Ozonation, if it is necessary) >> MF >> Membrane filtration >> Evaporation of the obtained concentrate

 

I recommend you a pilot test of the suggested system you decide use or explore.

With our technical partners we can help you with some of this steps.

 

If you have enought area and climate you could evaporate all the water or just the concentrate.

 

Regards,

Orlando D. Gutiérrez Coronado