Hi think first  try to reduce ...

Hi think first  try to reduce the entrance of grease into the system and also considere increment the maintenance of the trap, make sure plenty space for sludge disposal, measure the amount of bulk grease to be removed from the trap, mesure the amount of the grease entrance into the trap, analyze the components of the grease in a away to identify the sources if possible, the data collection should follow.a protocol and quality control standard, at least; then you need to talk to an expert on the field you trust, hope this might help you in the meantime