The present invention relates to a lipophilic and hydrophobic nanofiber membrane and a method of preparing the same. The lipophilic and hydrophobic nanofiber membrane according to an exemplary embodiment may be compressed at a pressure of 10 kPa to 100 kPa and may have an average thickness of 10 μm to 1,500 μm.

A separation system includes an elongated separator vessel having an inlet, a heating section which is located downstream of the inlet, an oil accumulation section which is located downstream of the heating section, and an oil outlet which is connected to the oil accumulation section. The heating section includes an immersed plate heater which is fluidly connected to a heating medium heater that is located externally of the separator vessel. In operation, a heating fluid which is heated in the heating medium heater is circulated through the immersed plate heater to heat the multiphase fluid.

A separation system includes an elongated separator vessel having an inlet, a heating section which is located downstream of the inlet, an oil accumulation section which is located downstream of the heating section, and an oil outlet which is connected to the oil accumulation section. The heating section includes an immersed plate heater which is fluidly connected to a heating medium heater that is located externally of the separator vessel. In operation, a heating fluid which is heated in the heating medium heater is circulated through the immersed plate heater to heat the multiphase fluid.

A system for recovering fat, oil and grease (FOG) from wastewater has multiple annular flotation zones in a concentric configuration surrounding a central column to create progressively increasing surface areas for FOG and solid particles flotation. Each flotation zone may be equipped with an independent pressurized micro air and/or ozone bubbles distribution system. The FOG is recovered in the first flotation zone without chemical additions. Coagulant and flocculant may be added in the second flotation zone to maximize removals of biochemical oxygen demand (BOD), total suspended solids (TSS), and colloidal particulates and produce clear effluent. Magnesium chloride is added in the third flotation zone to remove phosphorus and to form struvite particulates that can be used as fertilizer. Since both organic loading and solid loading in the treated effluent are significantly reduced, poultry processing plants can more easily meet wastewater treatment plant discharge limits and avoid surcharges.

A system for recovering fat, oil and grease (FOG) from wastewater has multiple annular flotation zones in a concentric configuration surrounding a central column to create progressively increasing surface areas for FOG and solid particles flotation. Each flotation zone may be equipped with an independent pressurized micro air and/or ozone bubbles distribution system. The FOG is recovered in the first flotation zone without chemical additions. Coagulant and flocculant may be added in the second flotation zone to maximize removals of biochemical oxygen demand (BOD), total suspended solids (TSS), and colloidal particulates and produce clear effluent. Magnesium chloride is added in the third flotation zone to remove phosphorus and to form struvite particulates that can be used as fertilizer. Since both organic loading and solid loading in the treated effluent are significantly reduced, poultry processing plants can more easily meet wastewater treatment plant discharge limits and avoid surcharges.

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.

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.

A smart sand includes raw sand particles, synthetic SiO.sub.2 particles attached to the raw sand particles, a first material attached to a first set of the synthetic SiO.sub.2 particles, a second material attached to a second set of the synthetic SiO.sub.2 particles, and a third material attached to the first material. Each of the first to third materials is different from each other.

A smart sand includes raw sand particles, synthetic SiO.sub.2 particles attached to the raw sand particles, a first material attached to a first set of the synthetic SiO.sub.2 particles, a second material attached to a second set of the synthetic SiO.sub.2 particles, and a third material attached to the first material. Each of the first to third materials is different from each other.

A grease interceptor and method of use thereof is provided for separating solids, fats, oils, and grease waste (“F.O.G.”), and other particulate matter. The grease interceptor receives waste water in a liquid storage area where solids in the waste water have residence time long enough to gravitationally separate towards the bottom of the liquid storage area and waste that is less dense than water floats to the top of the liquid storage area. A series of features including channels, interrupter plates, and walls can increase the residence time or otherwise improve the separation of waste from the water. In addition, embodiments of the grease interceptor can have tapered access holes that improve visual inspection of the liquid storage area of the grease interceptor.