A. Flow from kitchen fixtures
enters the grease trap
B. An approved flow control or
restricting device is installed to restrict the flow to the grease
trap to the rated capacity of the trap.
C. An air intake valve allows
air into the open space of the grease trap to prevent siphonage and
D. The baffles help to retain
grease toward the upstream end of the grease trap since grease floats
and will generally not go under the baffles. This helps to
prevent grease from leaving the grease trap and moving further
downstream where it can cause blockage problems.
E. Solids in the wastewater that
do not float will be deposited on the bottom of the grease trap and
will need to be removed during routine grease trap cleaning.
F. Oil and grease floats on the
water surface and accumulates behind the baffles. The oil and
grease will be removed during routine grease trap
G. Air relief is provided to
maintain proper air circulation within the grease trap.
H. Some grease traps have a
sample point at the outlet end of the trap to sample the quality of
the grease trap effluent.
I. A cleanout is provided at the
outlet or just downstream of the outlet to provide access into the
pipe to remove any blockages.
J. The water exits the grease
trap through the outlet pipe and continues on to the grease interceptor
or to the sanitary sewer system.