Aerated Grit and Grease Removal Equipment will be installed and traveling on the rectangular tank. By forced aeration, the grease and scum will be floated to liquid surface then skimmed to grease/scum pit for further treatment by surface skimmer. The organics attached on the solids will be detached by aeration. The grit accumulated on tank bottom will be pumped to grit washer for grit washing, the liquid in grit washer will be returned to tank for further treatment. The cleaned grit will be collected in the cart for disposal.