Industrial wastewater characteristics vary with each type of discharge. Food processing ,dairy operations and meatpacking all have wastes that are very high in BOD, sometimes over 1000 mg/L. This BOD is high in dissolved sugars, fats, and proteins and low in suspended material. It will dramatically increase the loading on the secondary treatment processes. Some food process wastes can also have a high pH, And industrial discharge is considered to be a “Significant Industrial User” or SIU