| 摘要 |
<p>PURPOSE: Provided is a device for treating sewage and wastewater by using gas dissolution and sludge mixing which is able to improve the sewage and wastewater treating efficiency by effectively supplying oxygen to the sewage and wastewater and stirring. CONSTITUTION: In a sewage and wastewater treating device comprising an aeration tank (1) and a diffuser (3), the diffuser comprises a supplying pipe (5), one side (13) of which is placed on the outer part of the aeration tank and the other side (15) of which is placed on the inner part of the aeration tank to allow air or sewage and wastewater to flow in the aeration tank, a stirring means (9) mounted on the top part of the supplying pipe and generating fine bubbles by being rotated by buoyancy of air sprayed from the supplying pipe to increase dissolved oxygen rate by the stirring with the sludge and an air inducing body (7) mounted on the supplying pipe to intensively spray the supplied air to a rotation-inducing body (11).</p> |
