KR102442884B1 - Belt press dehydrator with cleaning water supply and sludge overflow prevention function through recycling - Google Patents

Abstract

The present invention relates to a belt press dehydrator with functions of supplying washing water through recycling and preventing sludge overflowing. Filtered water is recycled and recirculated so that a belt can be cleaned. When the sludge is supplied to a supply hopper, it is possible to prevent the sludge from overflowing from a supply hopper due to poor coagulation and poor supply amount setting. This is to solve problems such as gas fouling. A first filtration belt passing through the supply hopper and a second filtration belt pressurizing the sludge supplied to the first filtration belt are moved along a plurality of rollers to dehydrate the sludge between the filtration belts. The first and second filtration belts are washed through a belt washing nozzle spraying washing water. Filtered water is collected and discharged to the outside through the lower collection tank installed on the lower side of the aircraft. The lower collection tank forms inclined surfaces on the left and right sides based on the center. The drain pipe is formed inclined toward the pipe. By piping the first drain pipe at right angles to the drain pipe, the collected filtered water is configured to be discharged to a recycling means. The filtered water from which residual sludge is removed through the recycling means is supplied to the belt washing nozzle for washing the first and second filtration belts through a washing water supply pump.

Description

Belt press dehydrator with cleaning water supply and sludge overflow prevention function through recycling

The present invention relates to a belt press dehydrator having a function of supplying washing water through recycling and preventing overflow of sludge. To provide a belt press dehydrator with a function of supplying washing water through recycling and preventing sludge overflow, which can prevent problems such as gas pollution by preventing overflow of sludge from the supply hopper due to defects and poor setting of the supply amount. will do

In general, an industrial dehydrator is for removing moisture from processed sludge generated during the operation of industrial wastewater treatment facilities, sewage/wastewater/sewage treatment facilities, and environmental wastewater treatment facilities such as agriculture/livestock, and the processed sludge contains approximately 97 to 99 It contains moisture within the % range, and if it flows into the surface or river in this state, it will cause environmental pollution.

This sludge is dewatered using an industrial dehydrator, and a belt press type is mainly used.

In the case of a belt press dehydrator, sludge is inserted between a pair of first and second filtration belts moving along a plurality of rollers to be dewatered, and the first and second filtration belts are washed to improve dewatering efficiency. have.

As the prior art of belt press dehydrator, the belt press for dehydration in the Republic of Korea Utility Model Publication No. 20-0275511 (2002.05.11), and the Republic of Korea Utility Model Publication No. Belt press equipped with high-pressure belt and moisture adsorption fan of the Republic of Korea Patent Publication No. (B1) 10-0452145 (Oct. - Various technologies are provided, such as a belt press equipped with a closed circulation filter cloth of No. 2076278 (2020.03.02.) and a sludge dewatering device equipped therewith.

In the case of the above-mentioned prior technologies, which were developed with the main focus on improving the dewatering performance, the problem of increasing the use of external washing water due to insufficient technology to recycle the washing water for washing the belt, poor coagulation of the supplied sludge and poor setting of the supply amount As a result, there was a problem that the sludge overflowed from the supply hopper and polluted the gas, and a new technology to solve this problem was required in the industry.

US 200275511 Y1 2002.05.11. US 200412540 Y1 2006.03.28. US 100452145 B1 2004.10.12. US 102076278 B1 2020.03.02.

Accordingly, the present inventors have conventionally provided washing water from the outside to wash the filter belt, thereby increasing the washing quantity, and the gas overflows from the supply hopper due to poor coagulation of the sludge supplied to the supply hopper and poor setting of the supply amount, etc. In order to solve the problems, the present invention was researched and developed.

That is, in the present invention, by improving the structure of the lower water collection tank and adding a recycling means, the washing water used when washing the belt can be provided so that the washing quantity can be secured. will have completed

In addition, in the present invention, an overflow prevention means is provided in the supply hopper to prevent the sludge overflowing from the supply hopper even if the water level rises due to poor coagulation of the sludge supplied to the supply hopper and poor setting of the supply amount, etc. The present invention has been completed with the technical problem of the invention to be solved.

In the present invention as a means to solve the problem,

First, the first filtration belt passing through the supply hopper and the second filtration belt that pressurizes the sludge supplied to the first filtration belt are moved along a plurality of rollers to dehydrate the sludge between the filtration belts, and the washing water is sprayed. A belt press dehydrator that washes the first and second filter belts through a nozzle, collects filtered water through a lower water collection tank installed under the gas, and discharges it to the outside;

the lower water collection tank has inclined surfaces on the left and right sides with respect to the center, the drain pipe is inclined toward the pipe side, and the first drain pipe is piped at a right angle to the drain pipe so that the collected filtered water can be discharged as a recycling means; It is characterized in that the filtered water from which the residual sludge is removed through the recycling means is supplied to the belt washing nozzle for washing the first and second filter belts through the washing water supply pump.

Second, a corrugated concave-convex part is formed on the bottom of the first drain pipe side of the lower water collection tank so that heavy sediment can be deposited, and a floating material discharge tank partitioned by an overflow wall is formed on the side of the first drain pipe, and the floating material discharge tank has a second It is characterized in that it is possible to discharge the floating matter overflowing through the overflow wall by piping the second drain pipe to the outside.

Third, the recycling means includes: a washing water supply tank formed on the lower side of the frame and piped with a washing water supply pipe; a discharge water tank partitioned by a bulkhead on a side of the washing water supply tank and having a drain pipe; a drum supported by a frame on the upper side of the washing water supply tank, driven by a motor, a drain hole is perforated in the front, and filtered water is supplied through a first drain pipe; a sludge discharge plate installed in the axial direction inside the drum; a drum washing nozzle disposed in the axial direction on the upper part of the drum to spray washing water to wash the sludge moving along the inner surface of the drum by the sludge discharge plate; a sludge discharge hopper installed at an angle on the inside of the drum to discharge the sludge washed by the drum washing nozzle and a sludge discharge pipe for discharging the sludge discharged from the sludge discharge hopper to a discharge water tank; a washing water supply pipe piped to the washing water supply tank and supplying washing water to the belt washing nozzle and the drum washing nozzle; and a washing water supply pump installed in the middle of the washing water supply pipe to pump and supply washing water.

Fourth, an overflow prevention means is provided on the side wall of the supply hopper to prevent overflow of sludge from the supply hopper even if the water level rises due to poor agglomeration of the sludge supplied to the supply hopper and poor supply amount setting. .

Fifth, the overflow prevention means includes an overflow prevention hole formed in the upper middle of the side wall of the supply hopper; Guide rails formed on the left and right sides of the overflow prevention hole to the inside of the side wall; a sluice gate for ascending and descending along the guide rail; a ball tab coupled to the sluice gate and elevating the sluice gate according to the water level of the supply hopper; a water tank for preventing overflow formed on the outside of the side wall; and an overflow water discharge pipe for guiding and discharging the sludge that is piped to the overflow prevention water tank and discharged through the overflow prevention hole to the lower water collection tank.

When a belt press dehydrator having a function of supplying washing water through recycling and preventing sludge overflow provided in the present invention is used, the following effects are obtained.

- It is designed to supply washing water with residual sludge removed from the recycling means in the state that the primary sediment and suspended matter have been treated in the lower water collection tank, and the discarded filtered water can be reused as washing water, thereby reducing the cost of supplying washing water can save

-Since the supply hopper is equipped with an overflow prevention means that automatically opens and closes according to the water level, even if the water level rises due to poor agglomeration of the sludge supplied to the supply hopper and poor setting of the supply amount, the sludge overflows from the supply hopper and protects the gas or its surroundings. Since it is not contaminated, you can always keep the area around the belt press dehydrator clean.

1 is a front view showing a schematic configuration of a belt press dehydrator having a function of supplying washing water through recycling and preventing sludge overflow provided by the present invention;
Figure 2 is a plan view of Figure 1
3 is a perspective view taken from the lower water collection tank applied to the present invention;
4 is a plan view of the lower water collection tank applied to the present invention;
5 is a cross-sectional view showing the configuration of the corrugated concave-convex part and overflow wall of the lower water collecting tank applied to the present invention;
6 is a front cross-sectional view of the recycling means applied to the present invention;
7 is a side view of the recycling means applied to the present invention;
8 is a side cross-sectional view of the drum part in the recycling means of the present invention;
9 is a perspective view taken from the overflow prevention means applied to the side wall of the supply hopper of the present invention
10 is a cross-sectional view of FIG.

Hereinafter, a preferred embodiment of a belt press dehydrator having a function of supplying washing water through recycling and preventing overflow of sludge will be described based on the accompanying drawings.

1 is a front view showing a schematic configuration of a belt press dehydrator having a function of supplying washing water through recycling and preventing sludge overflow provided by the present invention, and FIG. 2 is a plan view of FIG.

A belt press dehydrator (1) having a function of supplying washing water through recycling and preventing sludge overflow to which the present invention is applied is provided with a plurality of rollers (3) installed on the base (2) as shown, and the supply installed on the base (2) A first filtration belt 5 that moves in a state in which the sludge is loaded via the hopper 4 and a second filtration belt 6 that pressurizes the sludge mounted on the first filtration belt 5 are provided with a plurality of rollers ( 3) so that dehydration can be made while moving along, and the supply hopper 4 is configured so that a fixed amount of sludge can be supplied from the sludge supply unit 7 in which a coagulant is added to the sludge introduced from the outside so that the sludge is agglomerated. .

A lower water collecting tank 8 is installed on the lower side of the gas 2 so that the filtered water dehydrated from the sludge can be collected by the first and second filter belts 5 and 6 moving along the rollers 3 and the dehydrated cake should be discharged to the outside.

In addition, as described above, the first and second filter belts 5 and 6 in a state where the cake is discharged after dewatering the sludge under pressure while moving along the roller 3 is performed by the washing water sprayed at high pressure from the belt washing nozzle 9. In the washing state, the first filtration belt 5 is supplied with sludge via the supply hopper 4, and the second filtration belt 6 is covered with the upper part of the first filtration belt 5 on which the sludge is placed. While moving along the plurality of rollers 3 as described above, it is configured so that dehydration can be made.

At this time, in order to wash the first and second filter belts 5 and 6, the first and second filter trays ( 10) (11) is installed to be supported by the gas (2) so that the washing water flows along the first and second filter belts (5) and (6) while dripping into the first and second filter belts (5, 6) being dehydrated It is configured to prevent it, and a lower water collecting tank 8 is installed at the lower end of the base 2 to collect filtered water.

This is a general configuration of the belt press dehydrator 1 having the above configuration.

In the present invention, in the configuration of the belt press dehydrator 1 having the above general configuration, the lower water collection tank 8 is improved to supply the filtered water to the recycling means 20 in a state in which sediment and suspended matter are removed from the filtered water, and the sludge is treated again. The filtered water can be used as washing water for washing the first and second filter belts (5) and (6).

In addition, in the present invention, the overflow prevention means 30 is provided on the side wall 4a of the supply hopper 4 to which the sludge is supplied, and the water level rises due to poor coagulation of the sludge supplied to the supply hopper 4 and poor setting of the supply amount. Even so, it is possible to prevent the overflow of sludge from the supply hopper (4).

Hereinafter, the structural features of the present invention will be described.

3 is a perspective view showing an excerpt of the lower water collecting tank applied to the present invention, FIG. 4 is a plan view of the lower water collecting tank applied to the present invention, and FIG. Each cross-sectional view is shown.

The lower water collecting tank 8 applied to the present invention is installed in the lower part of the base 2 so as to be supported on the base 2 .

The lower water collection tank 8 has inclined surfaces on the left and right sides with respect to the center, the drain pipe 8a is formed to be inclined toward the piping side, and the first drain pipe 8b is piped at a right angle to the drain pipe 8a to collect water. It is configured so that the filtered water can be discharged to the recycling means (20).

In addition, a wavy concave-convex portion 8c is formed on the bottom of the first drain pipe 8b side of the lower water collection tank 8 so that the heavy sediment contained in the filtered water falling into the lower water collecting tank 8 and collected can be deposited. and a floating material discharge tank 8e partitioned by an overflow wall 8d is formed on the side of the first drain pipe 8b, and a second drain pipe 8f is piped to the floating material discharge tank 8e to the overflow wall 8d ) and discharged to the outside so that the filtered water containing the floating matter overflowing can be discharged.

When the lower water collection tank 8 is configured as described above, the filtered water generated in the process of dewatering the sludge located between the first and second filtration belts 5 and 6 and the first and second filtration belts 5 and 6 are removed. Washing water generated during washing is collected in the lower water collecting tank 8. At this time, the filtered water contains some suspended matter and sediment. According to the present invention, in the case of sediment, a waveform formed on the floor in the process of moving toward the first drain pipe 8b. is caught by the concavo-convex part 8c of the It is supplied to the recycling means 20 through the.

8 is a front sectional view of the recycling means applied to the present invention, Figure 9 is a side view of the recycling means applied to the present invention, Figure 10 is a side sectional view of the drum part in the recycling means of the present invention, respectively.

The recycling means (20) in the present invention removes sludge again from the filtered water supplied from the lower water collection tank (8), and then can be used as the washing water used for the belt washing nozzle (9). A washing water supply tank 22 is installed.

The washing water supply tank 22 is provided with a discharge water tank 24 to be partitioned by the partition wall 23 laterally.

A washing water supply pipe 22a is piped to the washing water supply tank 22 , and a drain pipe 24a is piped to the discharge water tank 24 so that filtered water can be discharged.

And a drain hole is perforated in the front side of the washing water supply tank 22, and a drum 25 to which filtered water is supplied through the first drain pipe 8b is disposed to be supported by the frame 21, and a motor 26 It can be rotated with a driving force of

The drum 25 has a drive shaft 25a coupled to one side so that it can be rotated by a motor 26, and the other side is opened to connect the first drain pipe 8b connected to the lower water collection tank 8 to the drum 25. ) to allow entry into the interior.

The drum 25 has a filtering net 25b, such as a filtering belt, is coupled to the inner surface, a sludge discharge plate 25c is coupled to the inner wall in the axial direction, and the drum washing nozzle is axially coupled to the outer upper part of the drum 25 (29) is installed so that it can be sprayed toward the drum (25).

In addition, the sludge discharge hopper 27 supported by the frame 21 is inclinedly disposed toward the open side of the drum 25, and a sludge discharge pipe 27a is disposed at the end of the sludge discharge hopper 27 on the outside of the drum 25. Pipe to discharge the sludge to the discharge water tank (24).

When the sludge discharge plate 25c is formed in this way, the sludge is discharged when the washing water is sprayed from the drum washing nozzle 29 while the sludge collected at the bottom of the drum 25 is moved upward along the sludge discharge plate 25c. It falls into the hopper 27 and falls into the discharge water tank 24 through the sludge discharge pipe 27a, and is discharged through the drain pipe 24a.

Meanwhile, the washing water supply pipe 22a piped to the washing water supply tank 22 is connected to supply washing water to the belt washing nozzle 9 and the drum washing nozzle 29, and a washing water supply pump 28 is installed in the middle. Installed so that washing water can be supplied at high pressure.

6 is a perspective view showing an overflow prevention means applied to the side wall of the supply hopper of the present invention, and FIG. 7 is a cross-sectional view of FIG.

The supply hopper (4) in the present invention is provided with an overflow prevention means (30) on the side wall (4a).

The overflow prevention means 30 forms an overflow prevention hole 31 in an elongated long oval shape at the upper middle end of the side wall 4a of the supply hopper 4, and an overflow prevention hole 31 on the inner surface of the side wall 4a. ) to form the guide rails 32 to be located on the left and right sides. The guide rail 32 may be provided in a configuration in which grooves are formed in the vertical direction.

The sluice gate 33 is coupled to the guide rails 32 formed on the left and right sides of the overflow prevention hole 31 so that the guide rails 32 can be lifted up and down. Preferably, by coupling the ball tab 34 to the sluice gate 33, when the amount of sludge supplied to the supply hopper 4 increases more than the set value, the sluice gate 33 rises by buoyancy to close the overflow prevention hole 31. It is opened, and when the amount of sludge supplied to the supply hopper 4 meets the set value, it loses buoyancy so that the sluice gate 33 can be closed by its own weight.

In addition, an overflow prevention water tank 35 in which the sludge discharged from the overflow prevention hole 31 is accommodated is coupled to the outside of the side wall 4a, and an overflow water discharge pipe 36 is piped to the overflow prevention water tank 35. It allows the overflow water (sludge) to be discharged to the lower collection tank (8).

When the overflow prevention means 30 is installed in the supply hopper 4 as described above, when the water level rises due to poor coagulation of the sludge supplied to the supply hopper 4 and poor setting of the supply amount, the buoyancy of the ball tap 34 is It is automatically opened to the sluice gate 33 by ), it is possible to solve the problem of not polluting the gas (2) or gas (2) surroundings by overflowing the sludge, so that it is possible to always keep the surroundings of the belt press dehydrator (1) clean.

When you want to dewater sludge using the belt press dehydrator 1 having a function of supplying washing water through recycling and preventing sludge overflow provided in the present invention configured as described above, a coagulant is first added to the sludge so that the sludge is coagulated. A quantity of sludge is supplied from the sludge supply unit (7) to the supply hopper (4).

The sludge supplied to the supply hopper 4 is moved while being mounted on the first filtration belt 5 passing through the supply hopper 4, and a plurality of rollers 3 with the second filtration belt 6 covered. It is dehydrated while moving along the water, and the filtered water is collected into the lower water collection tank 8 under the gas 2 .

At this time, the filtered water collected in the lower water collecting tank 8 is supplied to the recycling means 20 in a state in which the sediment and suspended matter have been removed through the concave-convex part 8c and the overflow wall 8d of the bottom, and the recycling means 20 again After the sludge is separated, it is supplied to the belt washing nozzle 9 and the drum washing nozzle 29 to be used as washing water.

In addition, when the water level rises due to poor agglomeration of the sludge supplied to the supply hopper 4 and poor setting of the supply amount, the overflow prevention means 30 provided on the side wall 4a of the supply hopper 4 operates to remove the sludge. It is to prevent the sludge from overflowing the supply hopper (4) and polluting the gas (2) or around the gas (2) by quickly discharging it to the lower water collecting tank (8).

Therefore, according to the present invention, it is possible to secure the amount of washing by supplying the use of washing water in a recycling manner, and to solve the problem that the sludge overflows from the supply hopper 4 and pollutes the gas 2 or around the gas 2 . will be.

In the detailed description of the present invention, although specific embodiments are described, various modifications are possible without departing from the scope of the present invention. Therefore, the protection scope of the present invention should not be limited to the described embodiments, and should be defined by the claims described below as well as equivalents.

1: Belt press dehydrator 2: Gas
3: Roller 4: Feed hopper
4a: side wall 5: first filtration belt
6: Second filtration belt 7: Sludge supply part
8: lower collection tank 8a: drain pipe
8b: first drain pipe 8c: uneven part
8d: overflow wall 8e: floatation tank
8f: 2nd drain pipe 9: Belt cleaning nozzle
10, 12: first and second filter receiver 20: recycling means
21: Frame 22: Washing water supply tank
22a: washing water supply pipe 23: bulkhead
24: discharge tank 24a: drain pipe
25: drum 25a: drive shaft
25b: filtration network 25c: sludge discharge plate
26: motor 27: sludge discharge hopper
27a: sludge discharge pipe 28: washing water supply pump
29: drum cleaning nozzle 30: overflow prevention means
31: overflow prevention hole 32: guide rail
33: water gate 34: ball tap
35: overflow prevention tank 36: overflow water outlet pipe

Claims (5)

The first filtration belt 5 passing through the supply hopper 4 and the second filtration belt 6 pressurizing the sludge supplied to the first filtration belt 5 are moved along the plurality of rollers 3 to filter The sludge between the belts is dehydrated and the first and second filter belts 5 and 6 are washed through the belt washing nozzle 9 that sprays washing water, and the lower water collecting tank 8 installed below the gas 2 In the belt press dehydrator (1) for collecting filtered water and discharging it to the outside;
The lower water collecting tank 8 has inclined surfaces on the left and right sides with respect to the center, the drain pipe 8a is inclined toward the piped side, and the first drain pipe 8b is piped at a right angle to the drain pipe 8a to collect water. configured to discharge the filtered water to the recycling means (20);
The filtered water from which the residual sludge has been removed through the recycling means 20 is supplied to the belt washing nozzle 9 for washing the first and second filtration belts 5 and 6 through the washing water supply pump 28;
A wavy concave-convex portion 8c is formed on the bottom of the first drain pipe 8b side of the lower water collection tank 8 so that a heavy sediment can be deposited, and the overflow wall 8d is placed on the side of the first drain pipe 8b. A floating material discharge tank 8e partitioned by Belt press dehydrator with functions to supply washing water through recycling and prevent sludge overflow.
delete The method of claim 1 ;
The recycling means 20 includes a washing water supply tank 22 formed below the frame 21 and having a washing water supply pipe 22a connected thereto;
a discharge water tank 24 configured to be partitioned by a partition wall 23 on the side of the washing water supply water tank 22 and to which a drain pipe 24a is piped;
a drum 25 supported by a frame 21 above the washing water supply tank 22 and driven by a motor 26, a drain hole is drilled in the front, and filtered water is supplied through a first drain pipe 8b;
a sludge discharge plate 25c installed on the inside of the drum 25 in the axial direction;
a drum washing nozzle 29 disposed in the axial direction on the drum 25 and spraying washing water to wash the sludge moving along the inner surface of the drum 25 by the sludge discharge plate 25c;
The sludge installed at an angle inside the drum 25 and washed by the drum washing nozzle 29 is discharged from the sludge discharge hopper 27 and the sludge discharged to the sludge discharge hopper 27 is discharged to the discharge water tank 24. a discharge pipe (27a) and;
a washing water supply pipe (22a) piped to the washing water supply tank (22) and supplying washing water to the belt washing nozzle (9) and the drum washing nozzle (29);
Belt press dehydrator having a function of supplying washing water through recycling and preventing sludge overflow, characterized in that it includes a washing water supply pump (28) installed in the middle of the washing water supply pipe (22a) to pump and supply washing water.
The method of claim 1 ;
An overflow prevention means 30 is provided on the side wall 4a of the supply hopper 4, and even if the water level rises due to poor agglomeration of the sludge supplied to the supply hopper 4 and poor supply amount setting, etc., in the supply hopper 4 Belt press dehydrator having a function of supplying washing water through recycling and preventing sludge overflow, characterized in that it prevents the overflow of sludge.
5. The method of claim 4;
The overflow prevention means 30 includes an overflow prevention hole 31 formed in the upper middle of the side wall 4a of the supply hopper 4;
Guide rails 32 formed on the left and right sides of the overflow prevention hole 31 to the inside of the side wall 4a;
a sluice gate 33 ascending and descending along the guide rail 32;
a ball tab 34 coupled to the sluice gate 33 to elevate the sluice gate 33 according to the water level of the supply hopper 4;
a water tank 35 for preventing overflow formed outside of the side wall 4a;
Washing water supply through recycling and Belt press dehydrator with sludge overflow prevention function.

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