Filtration and deaeration system

A deaeration system comprising:

• a preliminary filtration stage configured to filter particles from and nucleate gas in a fluid stream to create a filtered fluid stream;
• a primary filtration stage downstream of the preliminary filtration stage configured to separate the filtered fluid stream into a first liquid stream and an air cavity concentrate stream, wherein the primary filtration stage comprises a primary filter element having primary filter media extending between a first end and a second end, the primary filter media having an upstream side and a downstream side;
• a housing spaced from the upstream side of the primary filter media to define a primary fluid flow path from the first end towards the second end, wherein the system defines a primary fluid inlet between the first end of the primary filter media and the housing, a primary fluid outlet on the second end of the primary filter media extending outward from the upstream side of the primary filter media, and a primary liquid outlet extending from the downstream side of the primary filter media;
• and
• a secondary filtration stage configured to receive the air cavity concentrate stream and separate the air cavity concentrate stream into a second liquid stream and a gas stream, wherein the secondary filtration stage comprises a secondary filter element having secondary filter media having an upstream surface and a downstream surface, the secondary filter media extending from a third end to a fourth end, wherein the system defines a secondary fluid inlet that is the primary fluid outlet, a secondary liquid outlet that is the downstream surface of the secondary filter media, and a gas outlet on the fourth end, wherein the secondary fluid inlet is towards the third end.

A method of using a system comprising:

• filtering particles and nucleating gas cavities in a fluid stream to create a filtered and nucleated fluid stream;
• separating the filtered and nucleated fluid stream into a first liquid stream and an air cavity concentrate stream with a primary filter element having primary filter media extending between a first end and a second end, the primary filter media having an upstream side and a downstream side;
• directing the first liquid stream into a fluid tank along a primary fluid flow path defined by a housing spaced from the upstream side of the primary filter media, wherein the primary fluid flow path is from the first end towards the second end, wherein a primary fluid inlet is between the first end of the primary filter media and the housing, a primary fluid outlet is on the second end of the primary filter media extends outward from the upstream side of the primary filter media, and a primary liquid outlet extending from the downstream side of the primary filter media;
• separating the air cavity concentrate stream into a gas stream and a second liquid stream with a secondary filter element having secondary filter media having an upstream surface and a downstream surface, the secondary filter media extending from a third end to a fourth end, wherein the system defines a secondary fluid inlet towards the third end that is the primary fluid outlet, a secondary liquid outlet that is the downstream surface of the secondary filter media, and a gas outlet on the fourth end;
• and
• directing the second liquid stream into the fluid tank.