NOVELTY - The fluid degassing system (400) comprises a reservoir (402), a fluid treatment system (100), a conduit (406) for coupling an outlet of the reservoir to an inlet of the fluid treatment system, a fluid treatment conduit coupling an outlet of the fluid treatment system to the reservoir, and an additive conduit coupled to first and/or vortex nozzle units of the treatment system. The fluid treatment system comprises a first vortex nozzle unit and a second vortex nozzle unit positioned in opposed relation to the first vortex nozzle unit.    USE - The system is useful for degassing fluids including non-flammable fluids such as industrial water, which is useful in hydraulic systems and alkanolamine systems, slurries for ceramic materials, slurries used as coating solution in paper making machines for making coated paper, coating solution, lubricants, cooling liquids for quenching, chemical solutions, and food preparations.    ADVANTAGE - The system efficiently and easily removes the gases from the fluid without degradation by minimizing the absolute pressure of the cavity and/or flushing the cavity with an inert gas thus reducing the dissolved gas partial pressure in the fluid.    DETAILED DESCRIPTION - The fluid degassing system (400) comprises a reservoir (402), a fluid treatment system (100), a conduit (406) for coupling an outlet of the reservoir to an inlet of the fluid treatment system, a fluid treatment conduit coupling an outlet of the fluid treatment system to the reservoir, and an additive conduit coupled to first and/or vortex nozzle units of the treatment system. The fluid treatment system comprises a first vortex nozzle unit and a second vortex nozzle unit positioned in opposed relation to the first vortex nozzle unit so that a stream exiting the first vortex nozzle unit contacts a stream exiting the second vortex nozzle unit. The fluid stream exiting the first vortex nozzle unit is contacted with the fluid stream exiting the second vortex nozzle unit to remove dissolved gases in the fluid stream. The first vortex nozzle unit has vortex nozzles, which are present in a cascade configuration. The additive conduit is configured to allow addition of an additive to the fluid stream passing through the first and/or second vortex nozzle unit. The vortex nozzle unit comprises a vortex nozzle comprising a nozzle body including a passageway, inlet ports and an end cap attached to the nozzle body. A first portion of fluid flows through a first set of nozzles, and a second portion of fluid flows through a second set of nozzles. An INDEPENDENT CLAIM is included for a method of degassing a fluid.    DESCRIPTION OF DRAWING(S) - The diagram shows a cross-sectional view of a system for degassing a fluid including a fluid treatment system.    Fluid treatment system (100)    Degassing system (400)    Reservoir (402)    Fluid receiving conduit (404)    Coupling conduit (406)    Additional conduit. (408)