I have a situation here, we manufacture ready to eat food . We have only one central grease trap outside our building before the waste water discharge to the main stream. Recently I have purchase and enzyme brick to prevent fat coagulation and improve my waste water quality before down to the stream.
I have send the sample before install and after installing enyzme brick . The result was great but my COD result is still over the limit.
So I wonder is the only grease trap are not sufficient ? or What other possible ways implement ?