With the application of different methods, it was possible to reduce
some critical parameters to smaller levels. Among the different
methods, we highlight those with the application of UV/O3/Fe2+ using
a catalyzer of 150 mg L−1
. This method managed to reduce COD by
59.1%, BOD5 by 50.3%, TKN by 86.8% and total P by 74.7%, and also increased
the biodegradability potential (COD/BOD5=1.32)