초록 ▼

Apparatus and method for treating liquor (e.g., liquor produced by sewage disposal systems) that is contaminated with dissolved, colloidal and finely divided suspended solids, and also with bacteria and viruses. The apparatus maintains a vertical column of the liquor in a treatment tank. Liquor is c

Apparatus and method for treating liquor (e.g., liquor produced by sewage disposal systems) that is contaminated with dissolved, colloidal and finely divided suspended solids, and also with bacteria and viruses. The apparatus maintains a vertical column of the liquor in a treatment tank. Liquor is continuously introduced into the lower portion of the tank and continuously removed at a level well below the top of the tank. The column is continuously sparged with gas containing ozone whereby gas bubbles progress upwardly to the surface with formation of foam that is received in a confined space above the column. The evolving foam is delivered into the zone of operation of an impeller which collapses the foam bubbles by mechanical shearing and impacting. Liquor derived from the collapsed foam and the evolved gas is collected and discharged. Remaining uncollapsed foam is recycled into the shearing zone. Solids of the liquor are removed from the column with the foam and are discharged in the liquor collected from the foam. Also a system and method making use of a plurality of such apparatus units and which treats the liquor in successive stages.

대표청구항 ▼

A contactor for treating liquors with gas containing ozone for removing contaminating solids and the destruction of bacteria and viruses, the gas being supplied from a source of the same, the contactor comprising an elongated vertical tank, inflow piping connected to the lower portion of the tank, o

A contactor for treating liquors with gas containing ozone for removing contaminating solids and the destruction of bacteria and viruses, the gas being supplied from a source of the same, the contactor comprising an elongated vertical tank, inflow piping connected to the lower portion of the tank, outflow piping connected to an intermediate portion of the tank and spaced upwardly from the inflow piping, means connected to said source for introducing said gas containing ozone into the tank at a level between the inflow and outflow connections, means for maintaining a quiescent zone of liquor and a desired liquor level in the upper portion of the tank, means at the upper end of the tank for receiving and mechanically shearing and impacting foam discharging from the tank to collapse the foam bubbles, and means for collecting and removing the liquor of the collapsed bubbles and for the discharge of gas evolved from the same, said means for maintaining a desired level of liquor in the tank consisting of a vertical standpipe having its lower end connected to receive liquor from the outflow piping.