If a facility operates a treatment system consisting of hydrolysis and activated carbon, and decides to drop hydrolysis and only run activated carbon, would the facility require approval first?
If the Table 10 technologies for the pesticide active ingredients present in the wastewater are both hydrolysis and activated carbon, then the facility would need to show that activated carbon is equivalent to hydrolysis for those pesticide active ingredients whose listed technology is hydrolysis before removing the hydrolysis unit from the treatment system. In addition, the facility must also demonstrate that the activated carbon system would be well operated and maintained. This would include reevaluating the frequency of carbon changeout to account for the carbon removing more pesticide active ingredients (and therefore becoming saturated more quickly).
