| 摘要 |
<P>PROBLEM TO BE SOLVED: To greatly increase sewage treatment efficiency by ultra-atomizing bubbles with relatively small energy consumption; to make maintenance easy with a very simple structure. <P>SOLUTION: Sewage aeration equipment 1 has a treatment tank 10 having a supply part 11 of the sewage w and a discharge part 12 for discharging purified water and purifying suspended organic matter in the sewage by applying it to contact oxidation due to bubbles discharged from the lower part and converging it in a massive form, and treat water feeders 20, 30 which are connected with an aeration pipe 16 laid at the lower part of the treatment tank 10 and discharging the bubbles into the treatment tank 10, and supply bubble-containing treat water W. The treat water feeders 20, 30 introduce bubbles into a water flow, fed at high speed in a water introduction part, at an air introduction part. The high-speed water flow is fed at a flow rate of at least 8 m/second into a ring passage limited by a cylindrical wall in a device casing, and impact force at a flow direction change part and shearing force and/or cavitation effect on a cylindrical wall surface ultra-atomize a cluster of water and the introduced bubbles, so that the atomized cluster of water and bubbles are contained in the flow of the treat water W. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
