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US 12,637,367 B2Granted
Device for removing fats, oils and/or grease (FOGs) from water
AssigneeButtress Group Ltd
InventorKevin McCabe
Life of this patent
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Abstract
A device and a method for removing fats, oils and/or grease (“FOGs”) from water comprise a separator, wherein the separator removes the FOGs that separate from the water under gravity, and a filter wherein the filter removes the FOGs remaining in the water after the water has passed through the separator. The filter comprises several layers having different compositions suitable for removing FOGs from water, including a layer comprising granular activated carbon bonded together and wrapped in polyester.
Claims23
A FOG (fats, oils and/or grease) filter for removing FOGs from waste water comprises:
- a first perforated layer;
- a second perforated layer adjacent to the first perforated layer, the second perforated layer comprising polyester;
- a third perforated layer adjacent to the second perforated layer, the third perforated layer comprising polyester impregnated with carbon;
- a fourth perforated layer adjacent to the third perforated layer, the fourth perforated layer comprising granular activated carbon bonded together using adhesive and surrounded by a protective layer of polyester;
- a fifth perforated layer adjacent to the fourth perforated layer;
- and
- a perforated casing that surrounds and encases the first to fifth perorated layers, the perforated casing including a front surface and a back surface, each of which is provided with multiple pores, and sidewalls that extend between the front surface and the back surface of the casing;
- wherein the second, third and fourth perforated layers are different to each other, the third perforated layer has pores having a smaller average pore diameter than the pores of the second perforated layer, and the fourth perforated layer has pores having a smaller average pore diameter than the pores of the third perforated layer;
- wherein, in use, waste water flows through the front surface of the casing to enter the filter, through the first to fifth perforated layers, and through the back surface of the casing to exit the filter, and FOGs are removed from the waste water.
6 more elements
A device for removing fats, oils and/or grease (“FOGs”) from water, the device comprising:
- an inlet for receiving water contaminated by FOGs into the device;
- a separator for removing FOGs from water, wherein the separator removes the FOGs that separate from the water under gravity;
- a FOG filter, wherein the FOG filter removes the FOGs remaining in the water after the water has passed through the separator;
- a flow passage for fluidly connecting the separator to the filter;
- and
- a water outlet for emitting the water once FOGs have been removed;
- wherein the FOG filter comprises:
- a first perforated layer;
- a second perforated layer adjacent to the first perforated layer, the second perforated layer comprising polyester;
- a third perforated layer adjacent to the second perforated layer, the third perforated layer comprising polyester impregnated with carbon;
- a fourth perforated layer adjacent to the third perforated layer, the fourth perforated layer comprising granular activated carbon bonded together and wrapped in polyester;
- and
- a fifth perforated layer adjacent to the fourth perforated layer;
- wherein all of the layers are encased by a perforated casing, such that, in use, water flows through the casing and all of the layers of the filter and FOGs are removed from the water.
11 more elements
A device for removing fats, oils and/or grease (“FOGs”) from waste water, the device comprising:
- an inlet for receiving water contaminated by FOGs into the device;
- a separator for removing FOGs from water, wherein the separator removes the FOGs that separate from the water under gravity;
- a filter chamber comprising a first side wall and a second side wall opposite the first side wall;
- a flow passage for fluidly connecting the separator to the filter chamber, the flow passage being provided in the first side wall of the filter chamber;
- a water outlet for emitting the cleaned water from the device, the water outlet being provided in the second side wall of the filter chamber;
- and
- a filter for removing FOGs from waste water located in the filter chamber:
- wherein the flow passage is located above a top of the filter and the water outlet is located opposite a middle portion of the filter;
- and
- wherein the filter comprises:
- a first perforated layer;
- a second perforated layer adjacent to the first perforated layer, the second perforated layer comprising polyester;
- a third perforated layer adjacent to the second perforated layer, the third perforated layer comprising polyester impregnated with carbon;
- a fourth perforated layer adjacent to the third perforated layer, the fourth perforated layer comprising granular activated carbon bonded together and wrapped in polyester;
- and
- a fifth perforated layer adjacent to the fourth perforated layer;
- wherein all of the layers are encased by a perforated casing, such that, in use, water flows through the casing and all of the layers of the filter and FOGs are removed from the water.
14 more elements
Dependencies are inferred from the claim text.