Figure 4-14. Box-type baffle grease trap (cut-away view).
4-19. BARREL FILTER GREASE TRAP
The barrel filter grease trap may be made from a 30- to 50-gallon barrel or drum
which has had its top removed and a number of large holes bored into the bottom
(figure 4-15). Eight inches of gravel or small stones are placed in the bottom and
covered with 12 to 18 inches of wood ashes or sand. A piece of burlap is fastened to
the top of the barrel to serve as a coarse strainer. The trap may be placed directly over
the soakage pit or it may be placed on a platform with a trough leading to the pit. The
grease trap should be emptied, washed, and refilled with fresh ashes or sand every
other day. The old ashes or sand should be buried. The burlap strainer should be
either washed or changed every day. If burlap is not available, a pail strainer may be
made by boring holes in the bottom of an old metal pail or can and filling it with grass or
straw. Place the strainer on top of the wood ashes or sand in the barrel grease trap.
Either the burlap strainer or the pail strainer will prevent the trap from becoming clogged
by coarse food particles.