JPH08108009A - Floc settling tank - Google Patents

Abstract

PURPOSE: To uniformly concentrate a floc on a floc extracting part without leaving the floc on the bottom of a tank in a nonuniform state by fitting a partition plate having a large inclination to the extracting part and furnishing a mechanism for transmitting a microvibration to the partition plate. CONSTITUTION: A vibrator 10 is operated at about 3000CPM in a floc settling tank, hence the settled floc is uniformly concentrated on a floc extracting part 6 without being left nonuniformly on partition plates 8A and 8B, and the floc is efficiently discharged. A fence 7 is formed to prevent the floc from being discharged from a supernatant outlet 4 when the floc is floated up due to any abnormality. The partition plates 8A and 8B are fixed to the main body 1 of a floc settling tank so that they have a large inclination to the floc extracting part 6. Further, the vibrator 10 is intermittently operated to adjust the concentrated state of the floc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floc settling tank for use in wastewater treatment and the like. More specifically, the present invention relates to a floc settling tank which is provided with a partition plate to which microvibration is applied, to efficiently perform floc It relates to a floc settling tank that is well drawn.

[0002]

[Prior art and its problems] The conventional structure for concentrating the flocs accumulated at the bottom of the floc settling tank used for wastewater treatment etc. in the extraction part has a gentle inclination toward the floc extraction part. It was common to have.

However, with such a structure, it is difficult to concentrate the flocs evenly in the floc extraction portion, and the flocs remain in the tank bottom in an uneven state, so that the flocs can not be efficiently extracted. It was impossible.

[0004]

SUMMARY OF THE INVENTION The present invention provides a floc settling tank capable of uniformly concentrating flocs in a floc pulling portion without the flocs remaining in an uneven state on the tank bottom.

Therefore, in the floc settling tank of the present invention, a floc pull-out portion is installed at the bottom of the main body of the flock settling tank, and a partition plate having a large inclination angle is arranged toward the floc pull-out portion. It is configured to include a vibration transmission mechanism for transmitting a minute vibration to the.

Such a vibration transmitting mechanism includes a vibration generating device disposed on the upper part of the flock sedimentation tank main body, a vibration transmitting frame connected to the vibration generating device, and a tip portion of the vibration transmitting frame. It can be configured with a stopper provided on the partition plate so as to be in contact with the partition plate, or the vibration transmission mechanism can be configured to operate intermittently.

[0007]

1 is a conceptual side sectional view of a floc settling tank according to an embodiment of the present invention, and FIG. 2 is a conceptual sectional view of its longitudinal direction. In both figures, a flock settling tank body 1 is composed of a treatment liquid receiving section 2, an aggregating section 3 having a stirrer 5, a supernatant discharging section 4, a floc pulling section 6 formed at the bottom of the tank, and a fence 7. .

Here, the fence 7 is provided in order to prevent the flocs from flowing out from the supernatant liquid discharge section 4 in the event that the flocs float up due to some abnormality. Further, a screw for discharging the flock and the like provided in the flock pull-out portion 6 are omitted in the drawing.

The partition plates 8A and 8B are provided with a floc pull-out portion 6
The periphery is simply fixed to the flock sedimentation tank main body 1 with a screw or the like so as to have a large inclination angle toward. In the illustrated embodiment, the inclination angle is 60 degrees.

The transmission mechanism for microvibration is a vibration generator 10 composed of an electromagnetic coil attached to a beam 9 fixed to the upper edge of the flock settling tank body 1, and a vibration extending downward when connected to the vibration generator 10. It is composed of a transmission frame 11 and stoppers 12 attached to the partition plates 8A and 8B, respectively. Here, the tip of the vibration transmitting frame 11 is held in contact with each stopper 12.

In the floc settling tank having the above structure, 30
When the vibration generator 10 is operated at about 00 CPM, the settled flocs are not concentrated and remain on the partition plates 8A and 8B in an uneven state and are evenly concentrated on the floc pull-out portion 6, so that the flocs can be efficiently discharged. It can be carried out. It is also possible to adjust the concentration of flocs by intermittently operating the vibration generator 10.

[0012]

In the floc settling tank of the present invention, a partition plate having a large inclination angle is provided toward the floc extraction portion,
Since this partition plate is equipped with a vibration transmission mechanism for transmitting minute vibrations, the settled flocs are not evenly left on the partition plate in an uneven state and are evenly concentrated in the floc pull-out portion, and therefore the floc The discharge can be treated efficiently.

Since the mechanism is simple and easy to repair, it can be installed at low cost.

[Brief description of drawings]

FIG. 1 is a schematic side sectional configuration diagram of a floc sedimentation tank according to an embodiment of the present invention.

FIG. 2 is a conceptual cross-sectional configuration diagram in the major axis direction of FIG.

[Explanation of symbols]

 1 Flock settling tank main body 2 Treatment liquid receiving part 3 Coagulation part 4 Supernatant liquid discharging part 5 Stirrer 6 Flock drawing part 7 Fence 8B Partition plate 8B Partition plate 9 Beam 10 Vibration generator 11 Vibration transmission frame 12 Stopper-

Claims (3)

[Claims] 1. A flock extraction part is installed at the bottom of a flock sedimentation tank main body, a partition plate having a large inclination angle is arranged toward the flock extraction part, and vibration transmission for transmitting a minute vibration to the partition plate. A floc settling tank configured to have a mechanism. 2. The vibration transmitting mechanism, wherein the vibration transmitting device is disposed above the flock sedimentation tank body, a vibration transmitting frame connected to the vibration generating device, and the vibration transmitting frame.
2. The floc settling tank according to claim 1, further comprising a stopper provided on the partition plate so as to abut a tip portion of the fume. 3. The floc precipitation tank according to claim 1, wherein the vibration transmission mechanism is operated intermittently.