KR200260936Y1 - Sludge Discharge Equipment Having No Dead Zone And Mixing Device - Google Patents

Abstract

The present invention is installed in a sedimentation basin such as a water treatment plant or a sewage treatment plant, and the sludge collected by the sludge collector is condensed and discharge efficiency is reduced, thereby preventing the effects of water quality due to waste of supernatant and sludge decay. A sludge agitation device for settling basins and a discharge device without dead zones.

The present invention in the sludge discharge apparatus for the sedimentation basin for discharging the sludge 10 collected in the hopper (5) of the sedimentation basin 1 to the outside, so that the sludge deposited in the lower portion of the hopper 5 can be collected as a center portion Perforated sludge suction tube having a plurality of holes (11a) set in the size and arrangement interval of each hole is installed at the bottom of the impeller and hopper of the specially designed stirrer to suck the inside of the tube with suction force to discharge to the outside of the hopper ( 11) characterized by consisting of.

Description

Sludge Discharge Equipment Having No Dead Zone And Mixing Device

The present invention relates to a sludge discharge device for the sedimentation basin, in particular, installed in the sedimentation basin, such as a water purification plant or sewage treatment plant, the sludge collected by the sludge collector is condensed to reduce the discharge efficiency, thus wasteless supernatant waste and sludge The present invention relates to a sludge agitation discharge device for sedimentation basins that can be retained in and prevent the adverse effects of water quality due to decay.

In general, water purification plants and sewage treatment plants are provided with a sedimentation basin 1 having a rectangular shape of approximately 70 mL × 10 mW × 5 mH as shown in FIGS. 1 and 2 to precipitate sludge contained in raw water flowing into the water purification plant and the sewage treatment plant. After that, the supernatant of the sedimentation basin is supplied to the filter paper through the overflowware (2) in the case of the water purification plant, and discharged to the stream after the organic matter purification process in the case of the sewage treatment plant.

Meanwhile, the sludge 10 precipitated in the sedimentation basin 1 is collected by the sludge hopper 5 located on the opposite side of the supernatant drainage wareware 2 by the sludge collectors 3 and 4 installed in the sedimentation basin, and then the vane valve ( 8), the water purification plant is discharged to the waste water tank through the vane pipe 7 to the concentration tank in the case of the sewage treatment plant.

In addition, the conventional sludge discharge device has a structure for inhaling and discharging the sludge 10 into the manifold pipe (7) installed between the hopper (5) and the thickening tank by operating the vane valve (8) periodically or manually to the timer. have.

Therefore, conventionally, the sludge 10 collected in the hopper 5 is condensed at the bottom of the hopper as shown in FIG. 4, and only the sludge around the vanillary tube 9 is discharged and the sludge located far from the rear and the entrance of the vanillary tube 9. Will continue to accumulate when it is not discharged smoothly. When this phenomenon continues and the surrounding sludge hardens, the vicious cycle of discharging sludge with a low concentration of only supernatant or sludge is repeated through the channel 11 formed in the compacted sludge 10.

Therefore, it is necessary to periodically empty the sedimentation basin 1 and use manpower to remove the condensed sludge 10 at the bottom of the hopper, causing a lot of economic losses.

Therefore, the present invention has been devised in view of the problems of the prior art, the purpose of which is installed in the hopper of the sedimentation basin, the impeller and the sludge designed to collect the sludge collected in the hopper to the center portion of the sludge (10) In order to solve the problem of sludge accumulation due to the stirrer 22 designed at a low speed of the impeller and in particular, the dead zone at the back of the existing vanillary tube 9 so as to prevent the injury, It is to provide a porous tube device designed to be possible.

1 is a plan view of the sedimentation basin of the general water treatment plant / sewage treatment plant,

2 is a cross-sectional view of FIG.

3 is an enlarged view of the hopper of FIG.

Figure 4 is a cross-sectional view of the sludge agitator and sludge discharge device combined according to the present invention,

5 is a detailed view of the sludge discharge apparatus according to the present invention,

6 is a plan view of the stirring apparatus according to the present invention,

7 is a plan view of the stirring apparatus according to the present invention,

8 is a side view of the stirring device according to the present invention.

* Explanation of Signs of Major Parts of Drawings *

One ; Sedimentation basin 5; Hopper

5e; Inclined plane 7; Connection

8 ; Valve valve 9; fallopian tubes

10; Sludge 11; Perforated tube

11a; Holes (porous pipes) 12; Concrete mortar

20; Agitator drive part 21; Agitator shaft

22; Stirring apparatus impeller 23; Agitator Bearings

24; Impeller Connection

In order to achieve the above object, the present invention is a sludge agitation discharge device for the sedimentation basin for discharging the sludge collected in the hopper of the sedimentation basin outside is installed in the center of the hopper, the porous tube for sludge collection is buried at the bottom of the hopper. The sludge accumulation zone was eliminated by constructing the inclined surface 5a from the mission.

The stirring device transmits the rotational force to the shaft 21 directly connected to the drive unit 20 including the reducer to the upper SLAB of the sedimentation basin, and the sludge accumulated on the inclined surface 5a of the hopper with the impeller 22 installed at the center of the hopper. It is composed of a shaft 21 for transmitting the rotational force of the streamlined impeller 22 and the vertical type reducer 20 designed to prevent the sludge from being scattered out by the impeller's rotational force to the impeller 22. The peripheral speed of (22) is designed to shift in the speed range (0.1m / min to 1.5m / min) where sludge does not float.

Perforated pipe (11) device for discharging the sludge is buried in the bottom of the hopper (5) to eliminate the sludge accumulated in the back of the vanilla fallopian tube (9) and the sludge accumulation section accumulated on the bottom of the hopper like the existing structure, c. The hole 11a is installed in the entire length of the perforated pipe, but the sludge can be drawn out with a uniform suction force using the perforated pipe 11 to discharge the sludge in a short period of time so that the facility cost required for the sludge treatment process Can greatly reduce and improve the water quality. In consideration of the shape of the hopper 5, the size of the sedimentation basin width, and the characteristics of the sludge 10, the diameter of the holes is arranged in a large number of not less than 15 mm without the hole 11a being clogged to evenly discharge the entire area of the sedimentation basin hopper. The aperture should be less than 300m / m to reduce the consumption of discharged water.

(Example)

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings in which preferred embodiments are shown.

5 is a cross-sectional view showing a sludge stirring discharge device coupled to the sludge stirring discharge device and the suction porous tube embedded in the hopper bottom according to the present invention, Figure 6 is a plan view of the porous pipe according to the present invention, Figure 7 is a detailed view of the sludge stirring impeller.

First, the sludge discharge device according to the present invention is installed in the lower middle of the sludge hopper 5 as shown in FIG. 6 to discharge the sludge from the sedimentation basin hopper 5 to the concentration tank.

The sludge suction porous pipe 11 is able to suck the sludge evenly by processing a plurality of suction holes (11a) in the upper portion. It is preferable in terms of efficiency to analyze the flow velocity of each hole and to arrange them with a narrower distance away from the center, or to calculate and arrange the specifications of each hole using the sedimentation basin water pressure.

The size and quantity of each hole of the porous pipe 11 are set suitably according to the discharge | emission of sludge and the characteristic of discharged sludge.

7 and 8 show a sludge stirring apparatus.

The sludge agitator is designed to connect the impeller 22 and the connecting plate 24 and the center of rotation of the shaft 21 that are designed to collect the sludge toward the perforated tube at the bottom of the hopper in the center portion. It consists of an underwater bearing device 23 installed in the bottom of the hopper.

The operation of the sludge stirring discharge device of the present invention configured as described above will be described in detail below.

When sludge is collected in the sludge hopper 5 by the sludge collector installed in the sedimentation basin 1, the stirrer is operated about 1 minute before opening the vane valve 8 automatically or manually periodically, and the inclined wall surface 5e of the hopper Sludge accumulated in the to move to the sludge porous pipe (11).

The ambient speed of the stirrer should be maintained between 0.1 m / min and 1.5 m / min to minimize the rise of sludge. After this process, when the banney transmission valve 8 is opened, the sludge is effectively discharged through the sludge porous pipe 11.

The sludge porous pipe is embedded in the bottom portion of the hopper 5 in order to increase the discharge effect, and remove the sludge accumulation section by making the inclined surface of the hopper from the porous pipe portion as shown in FIG.

The stirrer, the hopper and the sludge may be used separately or in combination with the stirrer and the porous tube.

As described above, in the present invention, the sludge condensed on the wall and bottom of the hopper part of the sedimentation basin is collected by the stirrer toward the porous tube of the bottom part of the hopper, and then the sludge is uniformly applied to the entire area inside the hopper by using the vane pipe. By rapidly sucking high concentrations and reducing the average discharge time of the existing facility to 6 minutes or less, it is possible to reduce the capacity of these structures to less than 50% by discharging them into discharge tanks or thickening tanks, and to clean sludge accumulated in the hopper three times a year. It can improve the uneconomical method of cleaning. The present invention is not limited to the above embodiments, and various changes and modifications may be made by those skilled in the art to which the present invention pertains without departing from the spirit of the present invention.

Claims (2)

In the sludge agitation discharge device for the sedimentation basin for discharging the sludge 10 collected in the hopper (5) of the sedimentation basin 1 to the outside, In order to evenly discharge the sludge accumulated in the bottom part and the corner part of the hopper 5 to the discharge device without dead zone embedded in the bottom part of the hopper, the hole 11a for the even suction force in the entire porous pipe. The sludge agitating and discharging device, whose diameter is 15mm ~ 300mm and the number of holes is one or more according to the shape and size of the hopper 5, is composed of two or more wing plates that can collect sludge toward the porous pipe 11. Sludge agitator discharge device consisting of a shaft 21 for transmitting power by connecting the impeller 22 and the vertical reducer and the impeller capable of operating the stirrer. The circumferential speed of the stirrer is set to 0.1 m / min to prevent sludge from running when the arc stirrer 20 and the impeller 22 are operated to collect the sludge toward the sludge porous tube 11 at the lower center of the hopper. Sludge agitation discharging device to operate at 1.5m / min.