Vessel and system for biological regeneration of ion exchange and absorptive media

A method of biologically regenerating ion exchange and absorptive media comprising the steps of:

• feeding a biological regenerating fluid into a first region of a vessel containing contaminated media particles at a first volumetric flowrate sufficient to produce a shear force high enough to reduce bio-film thickness on the media particles;
• dividing the biological regenerating fluid from the first region into portions,
• directing one of the portions of biological regenerating fluid into a second region of the vessel at a second volumetric flowrate lower than said first volumetric flowrate;
• and
• directing another one of the portions of biological regenerating fluid into a third region of the vessel at a third volumetric flowrate lower than said second volumetric flowrate.

A system for biological regeneration of ion exchange and absorptive media comprising:

• a vessel configured to contain a bed of contaminated media particles;
• a draft tube disposed within said vessel and having an inlet spaced above a bottom of said vessel and an outlet disposed proximate to a top of the bed of media particles, said draft tube being configured to receive a biological regenerating fluid for contacting the contaminated media particles;
• a substantially annular region longitudinally disposed at an elevation above said draft tube outlet and below a liquid deflector disposed at an elevation above said draft tube outlet, said substantially annular region being radially disposed between an outside wall of said draft tube and an inside wall of said vessel, and said substantially annular region being configured to receive a portion of biological regenerating fluid from said draft tube;
• and
• an upper region of said vessel disposed at an elevation above said deflector and comprising an area defined by a substantially full inside diameter of said vessel, said upper region being configured to receive another portion of biological regenerating fluid from said draft tube.

A system for biological regeneration of ion exchange and absorptive media comprising:

• a vessel configured to contain a bed of contaminated media particles;
• a central passage disposed within said vessel and having an inlet disposed at a top of said vessel and an outlet disposed at an elevation above and spaced apart from a bottom of said vessel, said central passage being configured to receive biological regenerating fluid for contacting the contaminated media particles;
• a first substantially annular region configured to receive biological regenerating fluid from said central passage, said first substantially annular region longitudinally being disposed from a bottom of said vessel to a top of the media bed and being radially disposed between an outside wall of said central passage and an inside wall of said vessel;
• a second substantially annular region longitudinally disposed (1) from a top of the media bed to an elevation below a first gas deflector disposed in an upper region of said vessel, and (2) between an outside wall of central passage and an inside wall of said vessel, said second substantially annular region being configured to receive a portion of biological regenerating fluid from said first substantially annular region;
• an upper region of said vessel longitudinally disposed above said gas deflector and between the outside wall of said central passage and the inside wall of said vessel, said upper region being configured to receive another portion of biological regenerating fluid from said first substantially annular region.

A system for biological regeneration of ion exchange and absorptive media comprising:

• a vessel configured to contain a bed of contaminated media particles;
• an outer central passage positioned within said vessel and having an inlet disposed at a top of said vessel and an outlet disposed in an upper region of said vessel, said outer central passage configured to receive a biological regenerating fluid for contacting the contaminated media particles;
• a first substantially annular region longitudinally disposed between a bottom region of said vessel and a top of said media bed and radially disposed between an outer wall of said inner central passage and an inner wall of said vessel, said first substantially annular region being configured to receive a portion of biological regenerating fluid from said outer central passage;
• an inner central passage having an inlet at a bottom region of said vessel and an outlet disposed at the top of said vessel, said inner central passage being configured to receive the portion of biological regenerating fluid from said first substantially annular region;
• and
• a second substantially annular region longitudinally disposed between a top of said media bed and a top of said vessel and radially disposed between the outer wall of said outer central passage, a portion of said inner central passage and the inner wall of said vessel, said second substantially annular region being configured to receive another portion of biological regenerating fluid from said outer central passage.