| 摘要 |
<p>PURPOSE: An air lifting aeration pipe for sewage and wastewater purification treatment is provided which is capable of purification treating sewage and wastewater efficiently, and a sewage and wastewater treatment facility using the air lifting aeration pipe is provided. CONSTITUTION: In a sewage and wastewater treatment facility sequentially comprising an anaerobic tank(7) into which water to be treated is flown, an aerobic tank(8) into which oxygen is supplied, a plurality of aeration tanks in which a plurality of biocontactors are packed, and aeration pipes forming a water current of convecting action as supplying oxygen to the water to be treated are installed, and a disinfecting discharge tank(9) for disinfecting and discharging the water to be treated passing through aeration process in the aeration tank, the sewage and wastewater treatment facility using an air lifting aeration pipe(1) is characterized in that a biocontactor layer in which small and large sized plastic containers(31) are filled is formed between upper and lower sieves installed in an intermediate layer inside each of the aeration tanks of first aeration tank(2a) into which the water to be treated is flown from the aerobic tank(8) to a fourth aeration tank(2d) for flowing out the water to be treated into a hot water tank, a tapered aeration pipe(4) is installed directly above the lower sieve of the first to fourth aeration tanks(2a-2d) respectively so as to secede microorganism lumps contacted onto the surface and inner side of the containers by initially strongly ejecting air from the lower part of the biocontactor layer and gradually reducing ejection amount of air, an upright part(11) which is vertically installed adjacently to the inner wall of one side in each of the first to fourth aeration tanks is integrated with a horizontal part(12) which is horizontally extended to the inner wall of the other side in the state that the horizontal part is bended on the upper part of the upright part.</p> |
