Ultrasound device for destruction of organic chemicals
AssigneeNew Jersey Institute of Technology
InventorsJay Meegoda, Jitendra Kewalramani
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Abstract
A treatment method and system using high-frequency ultrasound for treating a waste stream containing per- and polyfluoroalkyl substance (PFAS) is disclosed. The system has one or more reactors including one or more transducers configured to operating at one or more frequencies to destroy or mineralize the per- and polyfluoroalkyl substances (PFAS) in the waste stream using sonolysis.
Claims17
A sonochemical reactor system for destroying or mineralizing per- and polyfluoroalkyl substances (PFAS) in a waste stream, the reactor system comprising:
- a reactor defining a chamber for receiving the waste stream, wherein the chamber is defined by a plurality of walls;
- one or more baffles extending from at least one of the plurality of walls into the chamber;
- and
- a plurality of transducers disposed in the chamber, the plurality of transducers being disposed on the plurality of walls and being operable to induce cavitation in the waste stream to destroy or mineralize the per- and polyfluoroalkyl substances (PFAS) in the waste stream;
- wherein the one or more baffles define a plurality of reactor stages within the chamber, each of the reactor stages including a subset of the plurality of transducers, the subset including at least one pair of the plurality of transducers, the at least one pair of the plurality of transducers being opposingly or adjacently spaced, and each of the plurality of reactor stages defining a different stage of remediation, degradation and/or removal of the per- and polyfluoroalkyl substances (PFAS) from the waste stream.
A sonochemical reactor system for destroying or mineralizing per- and polyfluoroalkyl substances (PFAS) in a waste stream, the reactor system comprising:
- one or more reactors defining one or more chambers for receiving the waste stream;
- a plurality of walls defined by at least one of the one or more chambers or one or more baffles disposed in the one or more chambers;
- and
- a plurality of transducers disposed in the one or more chambers, the plurality of transducers being disposed on the plurality of walls and being operable to induce cavitation in the waste stream to destroy or mineralize the per- and polyfluoroalkyl substances (PFAS) in the waste stream;
- a fluid inlet to an interior volume of the flow-type sonochemical reactor;
- a first baffle of the one or more baffles attached to a first reaction chamber wall, a second baffle of the one or more baffles attached to a second reaction chamber wall, and a third baffle of the one or more baffles attached to the first reaction chamber wall, wherein the waste stream is received via the fluid inlet and directed to the first baffle and the first, second, and third baffles are configured such that the waste stream is directed in a sinuous path from the first baffle to the second baffle and from the second baffle to the third baffle;
- a first transducer of the plurality of transducers attached to a front face of the first baffle;
- a second transducer of the plurality of transducers attached to a rear face of the first baffle;
- a third transducer of the plurality of transducers attached to a front face of the second baffle;
- a fourth transducer of the plurality of transducers attached to a rear face of the second baffle;
- a fifth transducer of the plurality of transducers attached to a front face of the third baffle;
- a sixth transducer of the plurality of transducers attached to a rear face of the third baffle;
- and
- a fluid outlet through which a treated stream is discharged from the interior volume;
- wherein the one or more reactors define a plurality of reactor stages, each of the reactor stages including a subset of the plurality of transducers, the subset including at least one pair of the plurality of transducers, the at least one pair of the plurality of transducers being opposingly or adjacently spaced.
A sonochemical reactor system of for destroying or mineralizing per- and polyfluoroalkyl substances (PFAS) in a waste stream, the reactor system comprising a modular configuration that includes a plurality of reactors are operably coupled to each other, wherein the plurality of reactors include:
- one or more chambers for receiving the waste stream;
- a plurality of walls defined by at least one of the one or more chambers or one or more baffles disposed in the one or more chambers;
- and
- a plurality of transducers disposed in the one or more chambers, the plurality of transducers being disposed on the plurality of walls and being operable to induce cavitation in the waste stream to destroy or mineralize the per- and polyfluoroalkyl substances (PFAS) in the waste stream;
- wherein the plurality of reactors define a plurality of reactor stages, each of the reactor stages including a subset of the plurality of transducers, the subset including at least one pair of the plurality of transducers, the at least one pair of the plurality of transducers being opposingly or adjacently spaced;
- wherein the modular configuration includes a first reactor set comprising a first reactor in series with a second reactor in series with a third reactor, and a second reactor set in parallel with the first reactor set, the second reactor set comprising a fourth reactor in series with a fifth reactor in series with a sixth reactor.
Dependencies are inferred from the claim text.