System and method for removing silicone oil from waste water treatment plant sludge
AssigneeGeneral Electric Company
InventorsAmy Rene Freshour, Stephen Lan-Sun Hung, Bang Mo Kim, Mark Allan Moses, Alan Frederick North, Don Royall Houston
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Abstract
A method of removing silicone oils from waste water generated by a silicones manufacturing plant including the step of centrifuging the waste water to concentrate silicone oil contaminated solids while removing the silicone oils. The silicone oil contaminated solids are then dried in a continuously mixed sludge dryer to remove more silicone oils from the sludge to form a sludge product which comprises at least 10% water and a low silicone oil concentration.
Claims10
A method of removing silicone oils from silicone oil-containing waste water, the method comprising:
- adding biosolids to the waste water to reduce biosludge volume;
- centrifuging the waste water to concentrate silicone oil contaminated solids, the centrifuging the waste water removing silicone oil from the waste water;
- drying the silicone oil contaminated solids to remove silicone oil therefrom;
- and
- forming a sludge product that comprises at least 10% water.
A method of removing silicone oils from silicone oil-containing waste water, the method comprising:
- adding biosolids to the waste water to reduce biosludge volume;
- centrifuging the waste water in a centrifuge to a force of at least 740 G's, thereby forming a centrifuge sludge product comprising silicone oil contaminated solids and a phase comprising silicone oil;
- drying the silicone oil contaminated solids to remove silicone oil therefrom;
- and
- forming a sludge product that comprises at least 10% water.
A method of removing silicone oils from silicone oil-containing waste water, the method comprising:
- centrifuging the waste water in a centrifuge to a force of at least 740 G's, thereby forming a centrifuge sludge product comprising silicone oil contaminated solids and a phase comprising silicone oil;
- forming a sludge product that comprises at least 10% water;
- and
- removing free oils and centrate from the centrifuge.
A method of removing silicone oils from silicone oil-containing waste water, the method comprising:
- separating free silicone oils from the waste water in a gravity oil separator;
- centrifuging the waste water in a centrifuge to a force of at least 740 G's, thereby forming a centrifuge sludge product comprising silicone oil contaminated solids and a phase comprising silicone oil;
- and
- forming a sludge product that comprises at least 10% water.
Dependencies are inferred from the claim text.