KR101254765B1 - Sludge concentrate device - Google Patents

Abstract

PURPOSE: A sludge thickener is provided to maximize the concentration efficiency of sludge by continuous cleaning, in order to prevent air or washing water sprayed from an air pipe and a washing pipe inside of a wedge drum screen from blocking the gap of the wedge drum screen and thus to make the discharge of filtrate smooth. CONSTITUTION: A sludge thickener includes a main drum(2); a support plate(6); a rotation drum(8); a wedge drum screen(12) combined with the lower side of the rotation drum; a secession filtrate receiver(18); a filtrate discharge pipe(20); a central axis(23); an upper impeller(14); a lower impeller(26), and an internal impeller(25). The central axis is combined with an axis support plate(17) combined with the lower part of the wedge drum screen and is combined with bearings(7,22) fixed to the support plate and the secession filtrate receiver. The upper impeller is located outside of the wedge drum screen. The lower impeller is installed in the lower part of the central axis. The internal impeller is installed in the upper side of the central axis in order to be located inside of the wedge drum screen. Two air pipes(27) and two washing pipes(28) are symmetrically arranged inside of the wedge drum screen at a 90 degree angle to the axial direction, and a nozzle is formed in the air pipes and the washing pipes.

Description

Sludge concentrate device

The present invention relates to a sludge thickening device for separating the solids contained in the inflowing liquid sludge, and more specifically, to form a strainer to separate the water to form a bar-shape in the vertical direction to rotate the whole, and intermittently It is to provide a sludge concentrator that maximizes the efficiency of condensation by frequently filtering the sieve bucket by the high pressure compressed air and washing water injected.

A variety of technologies for treating industrial wastewater are provided, and a sludge concentrator that separates and discharges a portion of the desorption liquid is used to increase the concentration of sludge before dewatering the sludge into various dewatering devices to make a cake.

The prior art is provided with a sludge thickening device of the Republic of Korea Patent Publication (B1) 10-0707282 (2007.04.13.), A non-screw sludge thickening device of 10-0736695 (2007.07.09.).

The sludge thickening apparatus of Korean Patent Publication (B1) 10-0707282 is a sludge thickening apparatus which concentrates by separating and discharging a part of the stripping liquid from the floc and the stripping liquid formed by stirring the sludge and the flocculant, and the sludge and the flocculant are injected. An outer casing each having a discharge pipe for discharging the floc in communication with the pipe and the outside, which is vertically installed in the outer casing, is repeatedly stacked alternately so that a plurality of ring-shaped stationary discs and movable discs have a gap therebetween. A cylinder formed with a discharge pipe for discharging the desorption liquid, a drive shaft installed on the center shaft of the cylinder and rotating by receiving external power, a reducer mounted on the drive shaft to reduce the rotational force of the drive shaft in a reverse direction, and transmitting the rotational force of the drive shaft. And rotates between the outer casing and the cylinder Fitted with a stirrer, and the speed reducer for stirring the sludge and the coagulant, but rotating in the reverse direction and the stirrer consists of a configuration that includes a bar movable disc rotation for rotating to move the movable disk on the fixed disk.

The non-screw sludge thickening apparatus of Korean Patent Publication (B1) 10-0736695 includes a concentrator tank configured to separate and discharge the introduced wastewater into sludge and filtrate; Fixing plates provided in the concentrator tank and formed of a circular ring structure and assembled to each other by a fixed shaft, flow plates formed between the circular ring structures and generating gaps between the fixing plates and the fluidizing plate. A separation tank composed of spaces to separate sludge; A main shaft installed to penetrate the center portion of the separation tank to transmit rotational force; It consists of a configuration including a fluid plate swinging mechanism for rotating the fluidized plate while rotating in contact with the main axis in the state mounted to the main shaft, while rolling contact with the inner peripheral surface of the fluidized plate.

In the case of the above-described prior art, the treated water is introduced into the separation tank in which the fixed plate and the fluid plate are stacked, and the filtrate can be discharged into the gap between the fixed plate and the fluid plate constituting the separation tank.

However, in such a configuration, the gap between the fixed plate and the fluidized plate is blocked by sludge, which often hinders the discharge of the filtrate, and thus, it is difficult to lower the water content of the sludge, and there is also a problem in that the treatment capacity is lowered.

KR 100707282 B1 2007.04.13. KR 100736695 B1 2007.07.09.

Therefore, the present inventors have studied the present invention to solve the above-described problems, and in the present invention, the filter tube separating water is constituted by a bar type standing in a vertical direction so that the whole rotates, and also the high pressure of the intermittent injection The present invention has been completed with a technical problem in providing a sludge concentrating device capable of maximizing the efficiency of condensation by frequently placing the wedge drum screen by compressed air and washing water.

In the present invention as a problem solving means in the sludge thickening apparatus; A main drum having a supply pipe to which the treated water is supplied and a chemical liquid injection pipe formed at a lower side thereof, and a discharge pipe configured to discharge sludge at an upper side thereof; A support plate installed on an upper portion of the main drum; A rotating drum installed so as to be rotated by a driving force of a geared motor installed on an upper portion of the support plate while bearing the support plate; Wedge drum screen coupled to the lower side of the rotating drum; A tally filtrate receiver fixedly installed as a filtrate support on the main drum so as to be positioned below the wedge drum screen; A filtrate discharge pipe connected to the filtrate discharge unit installed at the upper end of the main drum in the tally filtrate receiver; A central shaft coupled to the shaft support plate coupled to the lower portion of the wedge drum screen and coupled to a bearing fixed to the support plate and the tally filtrate receiver; An upper impeller installed outside the wedge drum screen; An internal impeller installed on the upper side of the central axis was installed to be located inside the lower impeller and the wedge drum screen under the central axis.

In addition, the wedge drum screen is coupled to the upper and lower ends of the plurality of wedge bars between the top and bottom fixing flange of the donut shape to form a drum shape; The wedge bar has a wide triangular shape on the outside when viewed in a planar section, and a gap is formed between neighboring wedge bars.

In addition, two air pipes and two wash water pipes are arranged symmetrically with each other at an angle of 90 degrees in the axial direction inside the wedge drum screen; A nozzle was formed in the air pipe and the wash water pipe.

And the nozzle comprises two rows of holes of a long hole type; The holes of the nozzles are overlapped with each other to allow the spray to be evenly distributed throughout the gap.

In the case of using the sludge concentrating device provided by the present invention, the treatment water continuously supplied is solidified and separated from the water and the sludge by using the wedge drum screen, which is injected from the air pipe and the washing water pipe located inside the wedge drum screen. The air or wash water is continuously cleaned so that the gap of the wedge drum screen is not blocked, so that the filtrate can be discharged smoothly to maximize the sludge concentration efficiency.

Figure 1 is a front sectional view showing a preferred embodiment of the sludge concentrating device provided by the present invention
Figure 2 is a side cross-sectional view showing a preferred embodiment of the sludge thickening apparatus provided by the present invention
Figure 3 is a plan view of Figure 1
Figure 4 is an excerpt cross-sectional view showing the power transmission state in the present invention
Figure 5 is a plan cross-sectional view of the wedge drum screen applied in the present invention
Figure 6 is a perspective view showing an example of the air pipe and the washing water pipe applied to the present invention

Hereinafter, an embodiment of the sludge thickening apparatus provided by the present invention will be described with reference to the accompanying drawings.

1 and 2 is a front sectional view and a side sectional view showing a preferred embodiment of the sludge concentrator provided in the present invention, Figure 3 is a plan view of Figure 1, Figure 4 shows a power transmission state in the present invention It shows a main portion excerpt cross section for. In addition, Figure 5 is a plan sectional view of the wedge drum screen applied to the present invention, Figure 6 shows a perspective view showing an example of the air pipe and the washing water pipe applied to the present invention.

The sludge concentrating device 1 provided in the present invention forms a supply pipe 3 through which the treated water is supplied to the lower side of the main drum 2, and the lower side is able to mix the chemical liquid such as a coagulant with the treated water. The chemical injection tube 4 is formed. And the upper side of the main drum (2) forms a discharge pipe (5) for discharging the sludge concentrated in the treated water to be discharged to the sludge to the outside.

Although the sludge discharged to the outside is not shown in the present invention, the sludge is supplied to the sludge dehydrator so that the water can be squeezed again to form a cake with low water content.

The upper part of the main drum 2 is made of an open type, and the support plate 6 is installed at the upper part of the open main drum 2.

The lower side of the support plate 6 is provided with a rotating drum 8, the upper portion of which is supported by the bearing 7 on the support plate 6 and rotates.

A driving gear 9 is coupled to an upper edge of the rotating drum 8, and the driven gear 9 is provided on a shaft of a geared motor 10 provided above the supporting plate 6. ) To drive the rotating drum (8) coupled to the driven gear (9).

The rotating drum (8) is installed concentrically in the center of the main drum (2), and the wedge drum screen (12) is installed below the rotating drum (8).

The wedge drum screen 12 is configured to combine the upper and lower ends of the plurality of wedge bars 12c between the donut-shaped upper fixing flange 12a and the lower fixing flange 12b to form a drum shape. The wedge bar 12c used in the present invention has a wide triangular outer side when viewed in a planar section, and a gap 13 is formed between neighboring wedge bars 12c to separate the filtrate from the sludge from the treated water. The wedge drum screen 12 can be moved inside.

The outer side of the wedge drum screen 12 is coupled to the upper impeller 14 capable of stirring the sludge moving inside the main drum (2). Two upper impellers 14 are provided at symmetrical positions.

The coupling of the upper impeller 14 is configured to be fixed by using a bolt and nut 16 to the impeller fixing plate 15 that is erected between the upper fixing flange 12a and the lower fixing flange 12b.

The wedge drum screen 12 couples the upper fixed flange 12a with the rotating drum 8, and the shaft support plate 17 is coupled to the lower fixed flange 12b.

A tally filtrate receiver 18 is disposed below the shaft support plate 17 in a spaced apart state from the shaft support plate 17, and is supported by the filtrate support holder 19 fixed inside the main drum 2. The desorption filtrate receiver 18 is coupled to the filtrate discharge pipe 20 piped to the main drum 2 to discharge the filtrate.

The filtrate discharged to the filtrate discharge pipe 20 is discharged to the outside through the filtrate discharge portion 21, the filtrate discharge portion 21 is installed inside the discharge vessel 21a formed on the outside of the main drum (2) The water level is controlled by the level control device (21b) is a known technique that is configured to be discharged to the outside, the detailed description thereof will be omitted.

On the other hand, the upper end is coupled to the support plate 6 as a bearing 7 on the axial support 17a formed in the axial support plate 17, and the lower end passes through the bearing 22 installed in the tallyfiltrate 18 and receives the main drum ( It passes through the central axis 23 is installed to be close to the inner bottom of 2) and is fixed to the central axis 23 by using the bolt 24 to be driven together with the wedge drum screen 12.

An upper impeller 25 is disposed in the upper portion of the wedge drum screen 12 at the upper portion of the central shaft 23, and a lower impeller 26 is disposed in the main drum 2 at the lower portion of the central shaft 23. Install).

The lower impeller 26 has a function of mixing the treated water supplied through the supply pipe 3 and the chemical liquid supplied to the chemical input tube 4, and the internal impeller 25 passes through the wedge drum screen 12. It has the functionality of stirring a filtrate.

Meanwhile, in the sludge thickening apparatus 1 configured as described above, two air pipes 27 and two washing water pipes 28 are disposed at an angle of 90 degrees in the axial direction inside the wedge drum screen 12. Arranged symmetrically with each other, these air pipes 27 and wash water pipes 28 are fixed to the support plate 6 to maintain the stop state irrespective of the rotation of the wedge drum screen 12.

Nozzles 27a and 28a are formed in the air pipe 27 and the washing water pipe 28, and the nozzles 27a and 28a have a gap 13 formed by a wedge bar 12c in a long hole type hole. It is formed to be sprayed toward the side to prevent the gap 13 between the wedge bars 12c from being blocked by the sludge.

In the present invention, the nozzles 27a and 28a are configured in two rows, and the holes of both nozzles 27a and 28a are overlapped with each other so that the spraying can be evenly applied to the entire gap 13.

The present invention constituted as described above is used when the sludge is concentrated and separated from the treated water (sewage, industrial water, etc.) containing the sludge, and the operation according to the use of the present invention will be described below.

In order to use the sludge concentrating device 1 provided by the present invention, the wedge drum screen 12 and the central axis 23 are collectively driven by applying power to the geared motor 10 first. At this time, the compressed air and the washing water are supplied together at high pressure through the air pipe 27 and the washing water pipe 28.

In the above state, the treated water is supplied to the supply pipe 3 below the main drum 2, and the chemical liquid is supplied to the chemical input tube 4.

When the feed water and the chemical liquid are supplied through the supply pipe 3 and the chemical liquid input pipe 4, the sludge is condensed while they are agitated by the lower impeller 26 installed at the lower end of the central shaft 23.

As the sludge is condensed as above, the water level gradually increases, and when the treated water rises above the wedge drum screen 12, the sludge and the filtrate separated from the gap 13 are formed between the wedge bars 12c of the wedge drum screen 12. The sludge is introduced into the wedge drum screen 12 through the upper portion of the wedge drum screen 12 while being stirred by the upper impeller 14 and gradually rises and is discharged to the upper discharge pipe 5 of the main drum 2. .

And the filtrate introduced into the wedge drum screen 12 is discharged to the filtrate discharge pipe 20 through the desorption filtrate (18) installed in the lower portion of the wedge drum screen (12).

At this time, the filtrate flowing into the wedge drum screen 12 is installed above the central shaft 23 is stirred by the internal impeller (25).

Meanwhile, when the filtrate separated from the sludge flows into the wedge drum screen 12, the sludge blocks the gap 13 between the wedge bars 12c to prevent the smooth inflow of the filtrate, according to the present invention. Compressed air and high pressure sprayed from the nozzles (27a, 28a) formed in the air pipe 27 and the washing water pipe 28 is fixed to the inside of the wedge drum screen 12 to the gap 13 and By separating the sludge to secure the gap 13 will be able to ensure a smooth inflow of the filtrate.

In the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the described embodiments, but should be defined by equivalents as well as the following claims.

1: Sludge Thickener 2: Main Drum
3: supply pipe 4: chemical injection pipe
5: discharge pipe 6: support plate
7: Bearing 8: Rotary drum
9: driven gear 10: geared motor
11: Driving gear 12: Wedge drum screen
12a: upper fixed flange 12b: lower fixed flange
12c: Wedgeba 13: gap
14: upper impeller 15: impeller fixing plate
16: Bolt and nut 17: Shaft support plate
17a: Banking area 18: Tally
19: Filtrate receiving support 20: Filtrate discharge pipe
21: filtrate discharge part 22: bearing
23: center axis 24: bolt
25: Internal impeller 26: Lower impeller
27: air building 28: washing water pipe
27a, 28a: Nozzle

Claims (4)

In the sludge concentrating device 1;
A main drum (2) having a supply pipe (3) to which treated water is supplied and a chemical liquid introduction pipe (4) formed at a lower side thereof, and a discharge pipe (5) for discharging sludge to an upper side thereof;
A support plate 6 provided on the top of the main drum 2;
A rotating drum (8) installed so as to rotate by a driving force of the geared motor (10) installed on the upper portion of the supporting plate (6) in a state where the bearing (7) is supported by the supporting plate (6);
A wedge drum screen 12 coupled to the lower side of the rotating drum 8;
A tallow filtrate 18 fixed to the main drum 2 by a filtrate support 19 so as to be positioned below the wedge drum screen 12;
A filtrate discharge pipe (20) connected to the filtrate discharge unit (21) installed at the outer top of the main drum (2) in the tally filtrate receiver (18);
A central shaft 23 coupled to the axial support plate 17 coupled to the lower portion of the wedge drum screen 12 and coupled to the bearings 7 and 22 fixed to the support plate 6 and the tallow filtrate 18. and;
An upper impeller (14) installed outside the wedge drum screen (12);
Sludge, characterized in that it comprises a lower impeller 26 installed below the central axis 23 and an internal impeller 25 installed above the central axis 23 to be located inside the wedge drum screen 12. Thickener.
The method according to claim 1;
The wedge drum screen 12 is coupled to the upper and lower ends of the plurality of wedge bars (12c) between the donut-shaped upper fixing flange (12a) and the lower fixing flange (12b) to form a drum shape;
The wedge bar (12c) is a sludge thickening apparatus, characterized in that the outer side is made of a wide triangular shape when viewed in a planar cross section and a gap (13) is formed between neighboring wedge bars (12c).
The method according to claim 1 or 2,
Two air pipes 27 and two wash water pipes 28 are symmetrically disposed at a 90 degree angle in the axial direction inside the wedge drum screen 12;
The sludge thickening apparatus, characterized in that the air pipe 27 and the washing water pipe 28 is formed with nozzles (27a) (28a).
The method according to claim 3;
The nozzles 27a and 28a constitute two rows of holes of a long hole type;
Sludge concentrating device, characterized in that the holes of the nozzles (27a) (28a) are configured to overlap each other to evenly spray the entire gap (13).

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