Note: Descriptions are shown in the official language in which they were submitted.
CA 02889358 2015-04-28
WEBB 03 1 - 1CA
1
GREASE INTERCEPTOR
BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The present invention relates to the treatment of wastewater products
and, more
particularly, to a grease interceptor designed for maximizing the disposal of
grease, fats, and
oils from wastewater.
Description of Related Art
[0002] Grease interceptors are typically installed at locations where grease
is likely to be
conveyed down a drain system with wastewater. To prevent an additional burden
on the
wastewater system, grease interceptors are installed between the point of
water disposal and
the wastewater system. Grease interceptors are typically installed at
restaurants and food
processing facilities due to the large amount of food that is prepared at each
location. During
the cleaning process, grease and other food particles may easily be washed
away and
deposited in the water system if a grease interceptor is not in place to
mitigate the amount of
contaminants that reach the water system. The overtaxing of municipal sewage
treatment
facilities has become a serious problem in many communities and ordinances
requiring a
reduction in volume of grease and insoluble solids discharged into municipal
sewers are
becoming more widespread and stringent.
[0003] When greasy wastewater is discharged through a wastewater disposal
system, the
grease accumulates on the interior walls of associated piping. As the grease
coating grows, it
obstructs the flow of wastewater in the sewage pipe. Grease interceptors are
typically utilized
to intercept and remove this grease prior to entrance into the disposal
system. In many
instances, grease interceptors are not properly cleaned or maintained which
may result in
inadequate removal of grease.
[0004] In an effort to improve the separation and collection of grease and
foreign
materials, grease interceptors may include a series of compartments. However,
these
compartmentalized grease interceptors typically utilize level and temperature
sensors, valves,
and heating devices to properly maintain the flow and separation of grease
from the
wastewater. Grease interceptors of this type require frequent cleaning to
remove accumulated
materials. Cleaning of these grease interceptors is an unpleasant task that
can become very
messy and tedious. However, if the grease interceptor is not properly
maintained, the grease
CA 02889358 2015-04-28
WEBB 03 1- 1CA
2
will collect on the sensors and valves, thereby causing the grease interceptor
to function
improperly. Therefore, there is a current need for a simple grease interceptor
that minimizes
the above-mentioned deficiencies due to improper cleaning and maintenance.
[0005] Grease interceptors are well known in the art for receiving and
processing a mixture
of water and grease. The water and grease mixture is introduced within the
grease interceptor
tank where a baffle obstructs the flow of the water and grease mixture causing
the water and
grease mixture to slow down in velocity. The grease interceptor includes a
settling chamber,
whereby the grease floats on top of the water and the water is removed from
the bottom of the
grease interceptor. In each grease interceptor design, a portion of the
grease, or the solids,
however small, will end up passing through the grease interceptor. Therefore,
it is an object
of the present invention to lower the amount of grease and/or solids that pass
through the
grease interceptor.
[0006] Grease interceptors, in principle, use the natural differences in
buoyancy to remove
contaminants such as fat, oil, and grease (FOG) from the types of wastewater
experienced at
restaurants or any location which processes or prepares food. The difference
between the
density of a contaminant and incoming water is the driving force behind
separation. Having a
larger difference in density between materials will result in faster
separation. Other than
differences in density between materials, there are other main parameters
which affect the
rate of rise of FOG. Droplet velocity, concentration, retention time, and the
condition of the
grease/oil as it enters the basin all contribute to the rate of separation.
[0007] Oils, having a noticeably lower density compared to water, will rise.
Fats, having a
density of 900 kg/m^3 compared to water's average of 1000 kg/m^3 at room
temperature
(20 C), will also rise due to the difference in density but at a slower rate.
Solid food and other
particulates which also have the potential to enter the grease interceptor
system will tend to
either settle to the bottom of the interceptor or flow out with the filtered
water. The settling of
a particulate is dependent on the amount of time the particle is allowed to
remain inside the
interceptor.
[0008] The FOG particulates can also play a role in the rate of separation.
Having a larger
diameter grease globule will increase the rate of separation due to the
increased difference in
density from that of water. The relationship between the rate of rise and
droplet size is
directly proportional.
CA 02889358 2015-04-28
WEBB03 1- 1CA
3
[0009] The velocity of the grease entering the interceptor can influence the
rate of
separation. Although interceptors are designed to slow all incoming wastewater
to increase
retention time, an increased velocity of a grease globule will allow the
particle to more easily
rise to the top of the interceptor. A slow or non-moving particle will not
have enough
momentum to drive itself upward and it will rely on differences in density
alone, which can
increase retention time. Increasing the vertical velocity and decreasing the
horizontal velocity
of grease entering the system can be important to a successful grease
interceptor design.
[0010] The condition of the FOG entering the interceptor can also influence
the rate of
separation. With increased temperatures of FOG, these materials have a lower
drag
coefficient. In other words, the substances will have a decreased viscosity.
With a lower
viscosity, the contaminants have more ease rising to the top of the
interceptor. A decreased
temperature will increase the viscosity (drag coefficient) of a particle,
thereby making the
resistant forces for rising to the top to increase. This can also have a
positive impact on the
overall efficiency of the interceptor, however, due to the increased retention
time seen with
slower moving molecules entering the system.
[0011] With increased temperature, the solubility of grease also increases.
With more
grease dissolved within the wastewater, the particle size is significantly
decreased, thus
lowering the separation rate. Unless the mixture is allowed to cool to a lower
temperature, the
grease will not be separated and trapped by the interceptor.
[0012] The retention time is an important element when dealing with the rate
of separation
and having a successful interceptor. If the material entering the interceptor
passes through too
quickly, oil will not have enough time to rise to the top and materials with a
lower specific
volume and density will not have enough time to settle to the bottom of the
basin. Retention
time is calculated by dividing the volume of the interceptor by the flow rate.
Therefore, there
is a need for a grease interceptor that provides a flow through period equal
to the retention
time, meaning that in the amount of time it takes a particle to fully pass
through the
interceptor, it has also been retained and allowed to settle.
Most current grease interceptors are made from a metallic material and
periodically need to
be replaced due to corrosion. The current grease interceptors can be very
costly due to the use
of stainless steel to avoid substantial corrosion. Therefore, it is an object
of the present
invention to provide a grease interceptor with a longer lifecycle, which will
remain cost
effective in the marketplace.
CA 02889358 2015-04-28
WEBB03 1- 1CA
4
SUMMARY OF THE INVENTION
[0013] In one embodiment, a grease interceptor includes a container having a
plurality of
outer walls and a bottom surface connected to the outer walls, an inlet
opening defined in one
of the outer walls of the container, an outlet opening defined in an opposing
outer wall of the
container, an inlet baffle positioned adjacent the inlet opening, the inlet
baffle including a
protruding upper portion and a straight lower portion, a deflector positioned
adjacent a
bottom portion of the inlet baffle, a mid-wall baffle positioned at a
substantially centered
position along the longitudinal length of the container, and an exit baffle
positioned adjacent
the outlet opening.
[0014] The inlet baffle, the deflector, the mid-wall baffle, and the exit
baffle may be
removably inserted into channels defined in the outer walls of the container.
A top surface of
the mid-wall baffle may be positioned closer to a top surface of the container
than a top
surface of the outlet opening. A lid may be removably attached to a top
surface of the
container. The lid may include at least one clip configured to hold the lid on
the container.
The container and lid may define at least one slot for receiving the at least
one clip. The at
least one clip may be snap-fit into place on the lid and the container. A top
surface of the
deflector may be positioned closer to a top surface of the container than a
bottom surface of
the inlet baffle. The inlet baffle may include an upper flange that extends
outwardly from a
top surface of the inlet baffle to rest on a top surface of the container. The
protruding upper
portion of the inlet baffle may be substantially bulbous shaped. A first
separation chamber
may be defined between the inlet baffle and the mid-wall baffle, and a second
separation
chamber may be defined between the mid-wall baffle and the exit baffle. The
deflector, the
mid-wall baffle, and the exit baffle may extend substantially perpendicular to
the bottom
surface of the container.
[0015] In another embodiment, a water containment device includes a container
having a
plurality of outer walls and a bottom surface connected to the outer walls, an
inlet opening
defined in one of the outer walls of the container, an outlet opening defined
in an opposing
outer wall of the container, a lid removably attached to a top surface of the
container via at
least one clip that is received in a channel defined by the lid and the
container. The at least
one clip may include a tab extending outwardly from the container. The tab may
be
configured to assist in snap-fitting the at least one clip onto the lid and
container.
CA 02889358 2015-04-28
WEBB031-1CA
[0016] In another embodiment, a method of removing grease from a wastewater
stream
includes the steps of providing a grease interceptor including a container
having outer walls
and a bottom connected to the outer walls, an inlet opening defined in one of
the outer walls
of the container, an outlet opening defined in an opposing outer wall of the
container, an inlet
baffle positioned next to the inlet opening, and a deflector positioned near a
bottom portion of
the inlet baffle; directing wastewater filled with grease through the inlet
opening and against
a protruding portion of the inlet baffle, directing the wastewater out of a
bottom end of the
inlet baffle and against the deflector; directing the wastewater upwards in
the container
allowing grease to separate from the wastewater stream and float to a top
surface of the
container; and directing the wastewater out of the container through the
outlet opening. The
wastewater stream is directed through the outlet opening due to volume
displacement within
the container.
[00171 The method may also include the step of providing a mid-wall baffle
between the
inlet baffle and the outlet opening to define a first separation chamber and a
second
separation chamber in the container. The first separation chamber may be
defined between
the inlet baffle and the mid-wall baffle. The second separation chamber may be
defined
between the mid-wall baffle and the outlet opening. The method may also
include the step of
collecting a larger amount of grease in the first separation chamber than in
the second
separation chamber. The volume displacement within the container may be
achieved by
directing a substantially equal volume of clean water out of the container as
compared to a
volume of wastewater that is directed into the container. The method may
further include the
step of creating a turbulent flow in the wastewater when the wastewater is
directed against
the protruding portion of the inlet baffle. The method may further include the
step of creating
turbulent flow in and decreasing the velocity of the wastewater upon
contacting the deflector.
The method may further include the step of providing an exit baffle adjacent
the outlet
opening in the container to direct clean water out of the container.
[0018] Further details and advantages will be understood from the following
detailed
description read in conjunction with the accompanying drawings.
CA 02889358 2015-04-28
WEBB03 1-1CA
6
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 is a top perspective view of a grease interceptor in accordance
with this
disclosure;
[0020] FIG. 2 is a top perspective view of the grease interceptor of FIG. 1
with a lid
removed;
[0021] FIG. 3 is a top view of the grease interceptor of FIG. 1;
[0022] FIG. 4 is a side view of the grease interceptor of FIG. 1;
[0023] FIG. 5 is a back view of the grease interceptor of FIG. 1;
[0024] FIG. 6 is a top perspective view of the cover of the grease interceptor
of FIG. 1;
[0025] FIG. 7 is a cross-sectional view of the grease interceptor of FIG. 1
showing the
flow path of wastewater through the grease interceptor;
[0026] FIG. 8 is a top perspective, cross-sectional view of the grease
interceptor of FIG. 1;
[0027] FIG. 9 is a front perspective view of a baffle insert used with the
grease interceptor
of FIG. 1;
[0028] FIG. 10 is a top view of the baffle insert of FIG. 9;
[0029] FIG. 11 is a side view of the baffle insert of FIG. 9;
[0030] FIG. 12 is a back view of the baffle insert of FIG. 9;
[0031] FIG. 13 is a front perspective view of a cover clip used with the
grease interceptor
of FIG. 1; and
[0032] FIG. 14 is a side view of the cover clip of FIG. 13.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0033] For purposes of the description hereinafter, spatial orientation terms,
as used, shall
relate to the referenced embodiment as it is oriented in the accompanying
drawings, figures,
or otherwise described in the following detailed description. However, it is
to be understood
that the embodiments described hereinafter may assume many alternative
variations and
configurations. It is also to be understood that the specific components,
devices, features, and
operational sequences illustrated in the accompanying drawings, figures, or
otherwise
described herein are simply exemplary and should not be considered as
limiting.
[0034] Referring to FIGS. 1, 2, 4, and 5, a grease interceptor 2 is described
in detail. The
grease interceptor 2 includes a container 10 having a bottom 12 and four walls
14a, 14b, 14c,
and 14d extending upward from the bottom 12. In one embodiment, the container
10 is
CA 02889358 2015-04-28
WEBB03 1-1CA
7
rectangular-shaped. It is to be understood, however, that additional shapes
and sizes of the
container 10 are contemplated, such as square-shaped. The grease interceptor 2
may be made
from a plastic material such as polyethylene or polypropylene. Alternative
materials may also
be used such as a metal or a hard rubber. An inlet opening 16 is defined in
one wall 14b of
the container 10 and establishes fluid communication between the container 10
and a drain
outlet (not shown). The diameter of the inlet opening 16 may correspond to the
diameter of
the drain outlet. An outlet opening 18 is defined in an opposing wall 14d of
the container 10
and establishes fluid communication between the container 10 and a wastewater
treatment
system (not shown). The diameter of the outlet opening 18 may correspond to
the diameter of
the piping leading to the wastewater treatment system. The outlet opening 18
may be
positioned in closer proximity to the top of the container 10 than the bottom
of the container
10.
[0035] A plurality of channels 20a-20h are also defined in an inner surface of
the walls
14a, 14c of the container 10. The channels 20a-20h extend from an upper
portion of the walls
14a, 14c to a bottom portion of the walls 14a, 14c. As shown in FIG. 4, at
least one of the
channels 20f may extend closer to the bottom surface of the container 10 than
other channels
20e, 20g, 20h. The channels 20a-20h are configured to receive additional
components of the
grease interceptor 2 as will be discussed in further detail below. A plurality
of slots 22a-22h
are positioned at an upper portion of an outer surface of the walls 14a-14d of
the container
10. In one embodiment, there are two slots 22a-22h positioned on each wall 14a-
14d. The
slots 22a-22h include two vertical members that define a channel therebetween.
It is
contemplated that more or fewer slots may be provided on the container 10.
[0036] As shown in FIGS. 1, 3, and 6, the grease interceptor 2 also includes a
lid 30 for
sealing the top of the grease interceptor 2. The upper surface of the
container 10 may include
a recessed ledge to allow the lid 30 to rest thereon. The lid 30 corresponds
to the shape of the
container 10, so that upon placement of the lid 30 on top of the container 10
an air-tight seal
is established. It is also contemplated that a lid 30 may not be used with the
grease interceptor
2. The lid 30 includes a plurality of slots 34a-34h positioned on a top
surface of the lid 30.
The slots 34a-34h are positioned on the lid 30 to correspond to the position
of the slots 22a-
22h on the container 10 when the lid 30 is provided on the container 10. When
the slots 34a-
34h of the lid 30 align with the slots 22a-22h of the container 10, an
elongated channel is
established therebetween. This elongated channel is longer in length than each
of the
CA 02889358 2015-04-28
WEBB03 1-1CA
8
channels defined by each individual slot 22a-22h, 34a-34h. These elongated
channels
established by the slots 22a-22h of the container 10 and the slots 34a-34h of
the lid 30 are
configured to receive a plurality of cover clips 32a-32h. The cover clips 32a-
32h are inserted
into the elongated channels defined by the slots 22a-22h of the container 10
and the slots
34a-34h of the lid 30. The cover clips 32a-32h may be configured to lock the
lid 30 onto the
container 10. In one embodiment, the cover clips 32a-32h may be snap-fit into
the elongated
channels defined by the lid 30 and container 10. It is also contemplated that
the cover clips
32a-32h may be mechanically fastened to the lid 30 and the container 10 using
screws, nails,
or other suitable fasteners. The lid 30 may also be locked on the container 10
using a friction
fit, adhesive, or a hinged arrangement. In another embodiment, the lid 30 may
be integrally
formed with the container 10, thereby creating a single, monolithic structure.
However, since
the lid 30 could not be removed to clean the container 10, this is not a
preferred embodiment.
By using the cover clips 32a-32h to hold the container 10 and the lid 30
together, an air-tight
seal is formed therebetween. This air tight seal may assist in preventing
wastewater and
grease from spilling out of the container 10, as well as blocking unpleasant
odors from
leaking out of the container 10.
[0037] As shown in FIGS. 13 and 14, each cover clip 32a-32h is substantially U-
shaped
with a pair of horizontal members 36a, 36b extending from a vertical member
35. An
extension member 38 extends in an opposing direction from the top horizontal
member 36a.
The extension member 38 is configured to permit an individual to apply
pressure to each
cover clip 32a-32h to snap-fit the cover clips 32a-32h on and off of the
container 10 and the
lid 30. The cover clips 32a-32h may be separate and removable from the lid 30
and container
10. Alternatively, the cover clips 32a-32h may be hingedly connected to the
container 10 via
the lower horizontal member 36b or 1--) the lid 30 via the top horizontal
member 36a.
[0038] As shown in FIGS. 7-12, an inlet baffle 40 extends across the width of
the
container 10 and is positioned near the inlet opening 16. The inlet baffle 40
slides into the
channels 20d, 20e of the container 10 to rigidly hold the inlet baffle 40
within the container
10. This allows for easy removal of the inlet baffle 40 to clean the inlet
baffle 40 or the
container 10. It is also contemplated that the inlet baffle 40 may be
integrally formed with the
container 10. The inlet baffle 40 includes an upper flange 42, a lower flange
44, a protruding
portion 46, and a straight portion 48. The protruding portion 46 extends
upward and outward
from the straight portion 48. The protruding portion 46 has a substantially
bulbous shape. In
CA 02889358 2015-04-28
WEBB03 1- 1CA
9
one embodiment, a bulbous shape may include a round and elongated shape.
However, it is to
be understood that the protruding portion 46 may have any alternative shape
that directs
wastewater into the container 10. The lower flange 44 extends laterally from a
front surface
of the protruding portion 46 and the straight portion 48. The lower flange 44
is inserted into
the channels 20d, 20e defined in the container 10, thereby holding the inlet
baffle 40 in the
container 10. The upper flange 42 extends outwardly from a top surface of the
lower flange
44. The upper flange 42 is configured to abut an upper portion of the
container 10 above the
inlet opening 16. The protruding portion 46 and the straight portion 48 of the
inlet baffle 40
define a channel 50 therebetween that directs wastewater from the inlet
opening 16 to the
bottom of the container 10.
[0039] The container 10 also includes a deflector 52 positioned on a bottom
surface of the
container 10 near the bottom portion of the inlet baffle 40. The deflector 52
extends across
the bottom width of the container 10 and is inserted into the channels 20c,
20f of the
container 10. The deflector 52 may also be integrally formed with the
container 10. A top
surface of the deflector 52 is positioned above the bottom surface of the
inlet baffle 40. The
deflector 52 may be configured to direct any wastewater that exits out of the
bottom portion
of the inlet baffle 40 upwardly within the container 10.
[0040] A mid-wall baffle 54 is positioned in the center portion of the
container 10 between
the inlet opening 16 and the outlet opening 18. The mid-wall baffle 54 slides
into the
channels 20b, 20g of the container 10. The mid-wall baffle 54 may also be
intergrally formed
with the container 10. The mid-wall baffle 54 does not extend to the bottom
surface of the
container 10 nor does the mid-wall baffle 54 extend to the top surface of the
container 10.
Using this arrangement, wastewater may flow underneath of the mid-wall baffle
54. The mid-
wall baffle 54 extends across the width of the container 10.
[0041] An exit baffle 56 is positiu=led near the outlet opening 18 in the
container 10. The
exit baffle 56 slides in to the channels 20a, 20h of the container 10. The
exit baffle 56 may
also be integrally formed with the container 10. Similar to the mid-wall
baffle 54, the exit
baffle 56 does not extend to the bottom surface of the container 10 nor does
the exit baffle 56
extend to the top surface of the container 10. The inlet baffle 40, the
deflector 52, the mid-
wall baffle 54, and the exit baffle 56 are removably inserted into the
channels 20a-20h to
allow an individual to remove them for cleaning and emptying the container 10
of any grease
or food particles deposited therein. The inlet baffle 40, the deflector 52,
the mid-wall baffle
CA 02889358 2015-04-28
WEBB031-1CA
54, and the exit baffle 56 may be snap-fit or friction fit into the channels
20a-20h of the
container 10. A first separation chamber 58 is defined between the inlet
baffle 40 and the
mid-wall baffle 54. A second separation chamber 60 is defined between the mid-
wall baffle
54 and the exit baffle 56.
[0042] With reference to FIG. 7, operation of the grease interceptor 2 will
now be
described. Wastewater that enters the grease interceptor 2 through the inlet
opening 16 is
directed against the protruding portio,7 46 of the inlet baffle 40. As the
wastewater is directed
against the inlet baffle 40, the wastewater loses its horizontal velocity
component and is
directed downwardly towards the bottom of the container 10. The wastewater may
develop a
turbulent flow in the protruding portion 46 as the wastewater deflects in
several different
directions upon contacting the protruding portion 46. This turbulent flow will
assist in
separating the grease from the water in the wastewater. Air may also be
entrained in the
wastewater stream due to the turbulent wastewater flow that is created inside
of the
protruding portion 46 of the inlet baffle 40, wherein air bubbles may adhere
to the outer
surface of any grease globules in the wastewater stream. By adhering air
bubbles to the
grease globules, the air bubbles can assist the grease globules in floating to
the top of the
grease interceptor 2. The wastewater is directed out of the protruding portion
46 and through
the channel 50 defined in the inlet baffle 40, eventually exiting out of the
bottom portion of
the inlet baffle 40.
[0043] Once the wastewater travels under the bottom surface of the inlet
baffle 40, the
wastewater is directed against the deflector 52. The deflector 52 may create
additional
turbulent flow in the wastewater to further separate the grease from the
water. The defletor 52
will also assist in reducing the velocity of the wastewater. The deflector 52
directs the
wastewater upwardly towards the upper portion of the container 10. At this
point, any heavy
solid food particles in the wastewater stream have already been filtered from
the wastewater
stream at a point upstream of the grease interceptor 2 using a filtering
arrangement (not
shown). Therefore, the wastewater stream will most likely only contain grease,
oil, and fat
particles. However, if any heavy solid food particles were to remain in the
wastewater stream
in the grease interceptor 2, the heavy solid food particles would fall to the
bottom surface of
the container 10 next to the deflector 52. The trapped food particles can be
easily removed
from the container 10 by removing the lid 30 and scooping out the food
particles from the
container 10.
CA 02889358 2015-04-28
WEBB 03 1 - 1CA
11
[0044] As the wastewater is directed upward in the container 10, the grease in
the
relatively slow wastewater stream has an opportunity to float to the top
surface of the water
held in the container 10, thereby forming a grease layer on the top of the
water. Due to the
slow velocity of the wastewater and the differences in density of the grease
and water, the
grease can separate from the water and float to the top surface of the
container 10. The
wastewater may be slowed to a velocity that maximizes the retention time of
the wastewater
in the separation chambers 58, 60, without completely stopping the flow of
wastewater
through the container 10. It should be appreciated that during operation of
the grease
interceptor 2, the level of wastewater within the grease interceptor 2 may not
be lower than
the lower ends of the inlet opening 16 and the outlet opening 18. A
substantial portion of the
grease is separated from the wastewater stream in the first separation chamber
58 of the
container 10. However, additional grease may be separated from the water in
the second
separation chamber 60, as well.
[0045] After the first separation stage, the wastewater stream is directed
underneath the
mid-wall baffle 54 into the second separation chamber 60. Heavy food particles
still left in
the wastewater stream may drop to the bottom surface of the container 10 at
this point also.
As the wastewater stream continues to lose velocity, the remaining grease in
the wastewater
stream has an opportunity to float to the top surface of the water in the
container 10. The
clean wastewater stream is then directed underneath the bottom surface of the
exit baffle 56
and out of the outlet opening 18. Clean wastewater is removed from the grease
interceptor 2
through volume displacement within the container 10. Using this volume
displacement
arrangement, as new wastewater is directed into the container 10 through the
inlet opening
16, clean water positioned near the outlet opening 18 of the container 10 is
pushed out of the
grease interceptor 2. Therefore, clean water is not removed from the grease
interceptor 2 until
new wastewater is directed into the grease interceptor 2 and pushes the clean
wastewater out
of the grease interceptor 2. The volume of clean water that is directed out of
the outlet
opening 18 may be substantially equal to the volume of wastewater that is
directed into the
inlet opening 16. Further, since the outlet opening 18 is positioned lower
than the top of the
mid-wall baffle 54 in the container 10, any water will drain out of the outlet
opening 18
before flowing over the mid-wall baffle 54. Using this arrangement, all of the
grease
collected on the top surface in the first separation chamber 58 cannot
overflow into the
cleaner water in the second separation chamber 60.
CA 02889358 2015-04-28
WEBB03 1-1CA
12
[0046] While an embodiment of a grease interceptor is shown in the
accompanying figures
and described hereinabove in detail, other embodiments will be readily
apparent to, and
readily made by, those skilled in the art. Accordingly, the foregoing
description is intended to
be illustrative rather than restrictive. The invention described hereinabove
is defined by the
appended claims.
