Filter bed backwash system and process with recycled gas
AssigneeSiemens Energy, Inc.
InventorsChad L. Felch, Stuart J. Munson
Life of this patent
Estimating the term…
Abstract
A system and method for recycling gas in a backwash process is provided. The backwash process removes contaminants from a bed of filtration media. The method includes generating a mixed liquid-gas stream from the backwash process, withdrawing the mixed liquid-gas stream from the backwash process, separating the mixed liquid-gas stream into a liquid and a gas, and recycling at least a portion of the separated gas to the backwash process.
Claims15
1-15. (canceled)
A method for recycling gas in a backwash process, the backwash process comprising removing contaminants from a bed of filtration media in a water treatment device, the method comprising:
- backwashing the bed of filtration media by directing a gas and a backwash liquid through the bed of filtration media;
- generating a mixed liquid-gas stream from the backwashing of the bed of filtration media;
- separating the mixed liquid-gas stream into a liquid and a gas;
- and
- utilizing at least a portion of the separated gas as the gas in the backwashing of the filtration media.
A system for recycling gas from backwashing a bed of filtration media, the system comprising:
- a separation device having an inlet in fluid communication with a mixed liquid-gas stream, a liquid outlet, and a gas outlet, the separation device configured to separate the mixed liquid-gas stream into a liquid in fluid communication with the liquid outlet and a separated gas in fluid communication with the gas outlet;
- and
- a water treatment device containing filtration media and configured to generate the mixed liquid-gas stream during the backwashing, the water treatment device further having a gas inlet in fluid communication with at least a portion of the separated gas and a mixed liquid-gas stream outlet in fluid communication with the mixed liquid-gas stream.
Dependencies are inferred from the claim text.