KR200235057Y1 - The in-reactor type sludge condensing equipment of activated sludge process - Google Patents

Abstract

The present invention relates to a floating supernatant drainage device for discharging the suspended supernatant such as scum under the surface of the water only in the supernatant discharge step of the batch activated sludge method.

The main body of the supernatant discharge device in the present invention is a buoyancy chamber (1) connected to the air supply / exhaust device, the air chamber (2) installed inside the buoyancy chamber (1), the discharge pipe which is integrally installed in the air chamber (5) ), And the collecting pipe (4) connected to the discharge pipe (7) in a state located below the water surface (11). In addition, the lower end of the discharge pipe (5) is connected to the expansion pipe (6) is configured to be exposed to the atmosphere by installing a space (3) on the upper portion of the discharge pipe (5). The present invention provides a function of discharging and blocking the supernatant water by allowing the main body of the supernatant water discharge device to be submerged or injured with respect to the water surface 11 by supplying and excluding air through the air supply / exhaust device. It is a simple and easy operation and operation device that can discharge a relatively large amount of supernatant without entering floating matters.

Description

Floating type super sludge drainage system used in the batch activated sludge process {The in-reactor type sludge condensing equipment of activated sludge process}

The present invention relates to a sewage treatment apparatus, and more particularly, to a floating supernatant discharge device used in a batch activated sludge method or the like.

The batch activated sludge process is operated at each stage of inflow, aeration, sedimentation and discharge of supernatant. In the supernatant discharge step, the sedimented upper treated water should be discharged to the outside quickly, and sewage should not be discharged except for the supernatant discharge step. In the conventional supernatant discharge device, the supernatant is discharged by overflowing by installing an opening in the water surface of the reaction vessel side wall, or by installing an overflow-arm device and mechanically moving the overflow-arm up and down by power. Move to drain the supernatant. However, in such a conventional technology, since floating materials such as scum may be introduced into the discharge water, it is necessary to install a scum inflow preventing plate so that scum and the like do not flow in, and there is a problem such as a limitation in the amount of treated water.

Therefore, the present invention is to solve the problem of the floating water such as scum in the prior water discharge step or the limit of the treated water in the prior art as described above.

In addition, the present invention has an object to increase or decrease the buoyancy by the supply / removal operation of the air in the supernatant discharge step and other stages to automatically discharge or block only the supernatant water automatically without a separate power supply.

1 is a model diagram showing the basic structure of the main body water discharge device according to the present invention

Figure 2a is a cross-sectional view showing the position of the body of the supernatant discharge device in the supernatant discharge

2b is a cross-sectional view showing the elevated position so that the supernatant is not discharged by supplying air to the buoyancy chamber of the supernatant discharge apparatus at a stage other than the supernatant discharge stage.

<Description of the symbols for the main parts of the drawings>

1. Buoyancy chamber 2. Air chamber

3. Space 4. Water collection pipe

5. Exhaust pipe 6. Expansion pipe

7. Lower exhaust pipe 8. Air pipe

9. Air valve 10. Guide pipe

11.Sleep 12. Superior water

13. Precipitated Sludge 14. Batch Reactor

In order to achieve the above object, the supernatant discharge device main body of the present invention is integrated into the buoyancy chamber 1 connected to the air supply / exhaust device, the air chamber 2 installed inside the buoyancy chamber 1, and the air chamber 2. It consists of a vertical discharge pipe (5), and a collecting pipe (4) connected to the discharge pipe (5) in a state located below the water surface 11, the lower end of the discharge pipe (5) is connected to the expansion pipe (6) . In addition, inside the air chamber 2, the upper end of the discharge pipe 5 is exposed to the atmosphere, and a space part 3 into which the guide pipe can be inserted is installed.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a schematic view of the body of the supernatant discharge device according to the present invention.

The body of the supernatant water discharge device includes a buoyancy chamber 1 connected to an air supply / exhaust device (air engine 8 and air valve 9), an air chamber 2 installed inside the buoyancy chamber 1, and air. The discharge pipe 5 in the vertical direction, which is integrally installed in the chamber 2, the collecting pipe 4 connected to the discharge pipe 5 at a right angle and including the vertical portion, and installed inside the air chamber 2, and the discharge pipe 5 The space part 3 which exposes the upper end part of the to air | atmosphere is comprised. And the lower end of the discharge pipe 5 is connected to the expansion pipe 6, the expansion pipe 6 is connected to the lower discharge pipe 7 for discharging the supernatant to the outside of the batch reactor.

When the air is supplied to the buoyancy chamber 1 and the air chamber 2 has the size of the buoyancy chamber 1 and the air chamber 2, the lower end of the collection pipe 4 is submerged under the water surface 11, but the water collection pipe 4 and The connection part of the discharge pipe 5 rises above the water surface 11 (the state of FIG. 2B), and when the air is excluded, the connection of the collecting pipe 4 and the discharge pipe 5 is submerged under the water surface 11. In consideration of the state of FIG. The lower end of the collecting pipe 4 connected to the discharge pipe 5 is always moved up and down at a height below a certain level than the water surface 11.

The lower end of the collecting pipe 4 is open in the horizontal direction to collect the supernatant water in the horizontal direction as possible to discharge the clean upper water. Meanwhile, a curved rectifying plate is installed at the bottom of the collecting pipe 4 to prevent water from remaining in the collecting pipe 4 and to prevent sludge from accumulating. The cross-sectional shape of the collecting pipe 4 is round, square, etc., and rectangular is suitable for a large apparatus.

The operation sequence of the supernatant water discharge device of the present invention first opens the air valve 9 at the start of discharge of the supernatant water, so as to submerge the main body of the supernatant water discharge device downward with respect to the water surface 11, as shown in FIG. The supernatant is introduced into the discharge pipe 5 by the siphon phenomenon, and the supernatant is discharged through the discharge pipe 5 and the expansion pipe 6. When the water surface 11 is sufficiently low in the following order, air is supplied to the buoyancy chamber 1 to float to the position where the connection portion of the collection pipe 4 and the discharge pipe 5 is exposed to the atmosphere, and the collection pipe 4 The outflow of the supernatant is stopped by blocking the siphon phenomenon formed between the supernatant and the supernatant. Thereafter, while repeating the same operation, the body of the supernatant draining device is submerged or floated with respect to the water surface 11 to discharge or block the supernatant.

Thus, the upper end of the discharge pipe (5) is installed in the form exposed to the atmosphere by the space portion 3, the operation of repeating the start of the discharge of the supernatant water and shut off in accordance with the operation of supplying / removing air to the buoyancy chamber (1) It is very convenient to operate and the device is simple. And by installing the guide pipe 10 in the space (3) to prevent the upper water discharge device main body to shake left and right, the extension / expansion of the expansion pipe (6) is easy.

The devised upper water discharge device of the present invention is a state in which the lower end of the water collecting pipe (4) is always submerged under the water surface (11), so that suspended matter such as scum does not flow into the discharge water, so that the clean water can be recovered. By adjusting the bottom position, the level of water discharged from the supernatant can be easily adjusted.

As described above, the supernatant discharge device according to the present invention can obtain clean supernatant water from which floating materials such as scum are not introduced by supplying / extracting air to the buoyancy chamber 1, so that the activated activated sludge under the reactor is not injured. To discharge a relatively large amount of supernatant.

Claims (1)

The main body includes a buoyancy chamber 1 connected to an air supply / exhaust device (air engine 8 and air valve 9), an air chamber 2 installed inside the buoyancy chamber 1, and an air chamber 2 Vertically connected to the discharge pipe (5), the discharge pipe (5) perpendicularly installed on the collecting pipe (4) including a vertical portion, and is installed inside the air chamber (2) the upper end of the discharge pipe (5) The lower portion of the discharge pipe (5) is connected to the expansion pipe (6), the expansion pipe (6) is a lower discharge pipe (7) for discharging the supernatant water to the outside of the batch reactor. Connected to, the supernatant discharge device having a function of discharging and blocking the supernatant by submerging or floating the main body of the supernatant discharge device with respect to the water surface (11) by the operation of supplying and excluding air.