Dear Chad, The question ...

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Dear Chad,

The question seems not complete.

If you could share what was the Pollution Load (BOD, COD, pH) earlier and now after using H2O2 what changes (increase) has been noticed in (BOD, COD, pH). 

Main question which is not present here, were they using H2O2 while the Treatment plant designed or it is a new process change in Laundry?

Does your wastewater increased as well. 

Please check any other stream in not introduced from any other source.

Having an Activated Sludge Treatment on the Basis of MBR (Membrane Bio Reactor) gives quite good discharge and meets the Discharge Standards up to level of BOD