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US 8,025,798 B2Granted
Modular biological fluidized bed reactor system
AssigneeMYK Consultant, Inc.
InventorsMark Y. Kigel, Oleksandr O. Kovelenko, Leonard B. Goldman, John F. Shultis
Life of this patent
Estimating the term…
Abstract
A biological wastewater treatment process and modular apparatus wherein activated sludge is recirculated in all of aeration, fluidized bed and return sludge phases in the apparatus.
Claims14
In a packaged modular biological fluidized bed reactor system containing an aeration tank-clarifier for continuously reducing organic biodegradable impurities in wastewater comprising:
- a. An inlet pipe to introduce said wastewater into said modular biological fluidized bed system,
- b. a high efficiency grinding disintegrator to grind organic biodegradable impurities in wastewater,
- c. a head suppression chamber for receiving and conveying the wastewater with the ground particles,
- d. a tangential grit removal chamber that receives wastewater with said ground particles, said tangential chamber having a conical bottom wherein said ground particles settle,
- e. a container placed below said tangential chamber to receive said ground particles from said conical bottom of said tangential chamber,
- f. a split chamber to receive said wastewater from which said ground particles have been removed and
- g. at least one aeration tank-clarifier capable of receiving blown air which provides hydraulic recirculation provided by oxygen supplied from an air blower and disinfectant is supplied from a unit outside of said aeration tank-clarifier, wherein remaining organic impurities in said wastewater are biochemically oxidized and disinfected and said wastewater and an activated sludge are separated from the clarified effluent of said wastewater in a fluidized bed;
- the improvement wherein a system of baffles and recirculation tubes are present such that said oxygen provided by said air blower into said aeration tank-clarifier is capable of flowing along said system of baffles and sucked into the upper ends of said recirculation tubes to enhance air flow in said aeration tank-clarifier upon exiting from the lower ends of said recirculation tubes;
- thereby providing conditions for aeration, formation of a fluidized bed and liquid mass recirculation flow between all hydraulic circulation zones in said aeration tank-clarifier to result in a high reactor mass concentration within reaction volumes.
6 more elements
In a biological fluidized bed reactor system which comprises
- a. a high efficiency grinding disintegrator operable to grind organic biodegradable impurities in wastewater to a particle size of 6 mm or less, and
- b. a grit removal chamber in fluid communication with the grinding disintegrator,
- c. an aeration tank-clarifier in fluid communication with said grit removal chamber, said aeration tank-clarifier providing a zone for hydraulic recirculation,
- d. an oxygen supply in fluid communication with the aeration tank-clarifier, and
- e. a supply of disinfectant in fluid communication with the aeration tank-clarifier, wherein the air blower, disinfectant, and aeration tank-clarifier are operable to biochemically oxidize and disinfect said wastewater;
- the improvement wherein a system of baffles and recirculation tubes are present such that said oxygen provided by said air blower into said aeration tank-clarifier is capable of flowing along said system of baffles and sucked into the upper ends of said recirculation tubes to enhance air flow in said aeration tank-clarifier upon exiting from the lower ends of said recirculation tubes.
3 more elements
Dependencies are inferred from the claim text.