The HF Series is uniquely designed for the removal of fat, grease and suspended solids from food, industrial and municipal wastewater. It automatically isolates these materials from the liquid waste, making them suitable for separate disposal while increasing plant performance. The removal of these materials greatly decreases pollution loadings and makes the effluent suitable for disposal to public sewers. In addition, the high oxygen transfer rate facilitated by the special aerator provides for oxidation of sulfides.