Patent ID: 7288191
Filing Date: 2007-10-30
Classification: C02F,Y10S

Abstract:
1. A sludge treatment apparatus, comprising: an ozone treatment vessel which receives a supplied sludge-containing liquid and foams the sludge-containing liquid by blowing an ozone-containing gas into the sludge-containing liquid, wherein the ozone treatment vessel includes a diffuser pipe at a bottom of the ozone treatment vessel, the diffuser pipe is configured to supply the ozone-containing gas within an interior of the ozone treatment vessel, and the ozone treatment vessel includes a mixer having a plurality of blades provided within an interior of the ozone treatment vessel, and the plurality of blades includes a bubble mixing blade provided at an upper portion of the ozone treatment vessel and a liquid mixing blade provided at a lower portion of the ozone treatment vessel; and a phosphorus elution vessel which receives bubbles generated in the ozone treatment vessel through a bubble discharge port provided in an upper portion of the ozone treatment vessel and elutes phosphorus in the sludge-containing liquid by bringing sludge adsorbed on the bubbles and a sludge-dissolving agent into contact with each other, wherein a waste ozone gas decomposition device is connected to an upper portion of the phosphorous elution vessel.