In a collection system, grease is considered to be the residues of fats, detergents, waxes, free fatty acids, calcium and magnesium soaps, mineral oils, and certain other nonfatty materials which tend to separate from water and coagulate as floatables or scums. Many varieties of grease have high adhesive characteristics and collect other solids, forming restrictions and stoppages in collection systems. A receptacle designed to collect and retain grease and fatty substances usually found in kitchens or from similar wastes. It is installed in the drainage system between the kitchen or other point of production of the waste and the building wastewater collection line. Commonly used to control grease from restaurants.
Greensand is a natural ion exchange material which is capable of softening water.
The heavy material present in wastewater, such as sand, coffee grounds, eggshells, gravel and cinders. The heavy mineral material present in wastewater such as sand, coffee grounds, eggshells, gravel and cinders. The chamber is sized and shaped to reduce the velocity of flow through it and thus permit the settling out of grit. An enlargement in a collection line where grit can easily settle out of the flow. The waterway of a grit chamber.