초록 ▼

A transportable apparatus for biological treatment of a slurry of contaminated materials, including a series of square reactor cells having substantially parabolic lower portions, set at the same elevation and communicating in series. Gas diffusers are placed in each cell for aerating and mixing the

A transportable apparatus for biological treatment of a slurry of contaminated materials, including a series of square reactor cells having substantially parabolic lower portions, set at the same elevation and communicating in series. Gas diffusers are placed in each cell for aerating and mixing the slurry, and an airlift slurry transport system is employed for recirculating the slurry. The apparatus also has applicability to the treatment of water and waste water.

대표청구항 ▼

A method of bacterially treating a slurry of particulate material contaminated by one or more organic compounds comprising: providing a reaction cell having a centrally located vertically disposed draft tube therein and a horizontally extending diffuser bank substantially surrounding said draft tube

A method of bacterially treating a slurry of particulate material contaminated by one or more organic compounds comprising: providing a reaction cell having a centrally located vertically disposed draft tube therein and a horizontally extending diffuser bank substantially surrounding said draft tube in the lower portion thereof; providing a volume of said slurry in said reaction cell; introducing gas into said draft tube and thereby recirculating said slurry therethrough from the bottom of said reaction cell to the top thereof; introducing gas into said diffuser bank and thereby mixing said slurry across substantially the entire horizontal cross-section of said reaction cell above said diffuser bank; ceasing gas flow into said draft tube and said diffuser bank, whereby solids in said slurry settle to the bottom of said reaction cell; closing said draft tube; recommencing gas flow into said closed draft tube and out of the lower end thereof to cause said settled solids to loosen; and opening said draft tube and recommencing recirculation of said slurry therethrough.