KR101851988B1 - Sludge dehydrator - Google Patents

Abstract

The present invention provides a sludge dewatering device for enhancing efficiency of use by enhancing solid separation rate of the sludge while increasing space utilization efficiency. The sludge dewatering device comprises: a sludge concentration means for performing solid-liquid separation and concentration through a condensate regarding supplied sludge; a dewatering means for supplying and dewatering suspended solids discharged from an outlet of a stirring member; and a compressing means for supplying the suspended solids discharged through the outlet of the dewatering means to pressurize and compress the suspended solids.

Description

[0001] Sludge dehydrator [0002]

The present invention relates to a sludge treatment apparatus for separating solids and a liquid material from sludge mixed with a solid material and a liquid material and more particularly to a sludge treatment apparatus for improving the efficiency of space utilization and improving the solid separation rate of sludge, And a sludge dewatering device capable of reducing energy consumption.

Generally, sludge such as sewage effluent, livestock wastewater, food waste leachate, etc. generated in environmental industry is mixed with solid matter and liquid water.

Such sludge is treated by separating solid matter and liquid matter.

Such a solid-liquid separator selects and uses a single unit in consideration of the site conditions. When the solid-liquid separation efficiency is low, a plurality of unit units are used in conjunction with each other to increase the efficiency of solid-liquid separation.

One of the systems capable of continuously treating the sludge in the solid-liquid separator as described above is a system using an extrusion screw, and there is a system in which dehydration is performed through a screen (filtration body) for filtering the liquid material.

On the other hand, there is also a method of dehydrating and drying by supplying high-temperature steam and air, or a natural drying method by ventilation.

Korean Patent Application No. 10-2005-0041466 entitled " Solid-liquid separation filtration device ", May, May, 18, 2005). As known in the art, the inside of the case is surrounded by the inner space portion and the outer space A cartridge filter body formed to communicate with the inner space part and having a contaminant inlet port through which the contaminant to be filtered flows and a fluid outlet port communicating with the outer space part to discharge the filtered fluid; A plurality of blades in a tubular shape communicating with the passage in a predetermined interval are formed in a portion located inside the cartridge filter body so as to be rotatable through a central portion of the filter body in a vertical direction, A rotary shaft provided to be protruded to the lower end of the rotary shaft, A gas supply pipe connected to inject a pressurized gas to pressurize the inner space, a pressure measuring means mounted to measure the pressure of the inner space, Liquid separating and filtering apparatus including differential pressure measuring means mounted to measure the differential pressure between the parts and control means provided for overall operation control.

In Korean Patent Application No. 10-2007-0107952 (entitled: Solid-liquid Separation Device / October 27, 2007), as known in the art, a drum screen for solid-liquid separation of a sample dispensed through a sample distributor ; An extrusion screw extending outwardly from an inner center portion of the drum screen and feeding the introduced sample in one direction; A sample injection member provided to surround the outside of the extrusion screw so as to transfer the sample to the outside of the drum screen; And a dewatering unit having a dewatering screen for solid-liquid separation of the sample transferred to one side of the extrusion screw through the sample introduction member, and a dewatering guide for guiding the moisture discharged from the dewatering screen to the drum screen side, .

On the other hand, in Korean Patent Application No. 10-2011-0108320 (entitled: Solid-liquid Separator / Oct. 21, 2011), as is known in the art, there is a structure in which a top surface is opened on a support frame body, A microfiltration hole having a diameter of 1 to 1.2 mm is drilled in the circumferential surface of the cylindrical body to be a cylindrical body and the lower end of the support pipe is opened at the upper side of the support, A shaft is formed so that the end of the central shaft rod is fitted in a shaft grip provided on the support and rotatably supported. A protruding tubular body communicating with the inside from the center of the upper shielding plate toward the outside is formed. The lower end of the disk is placed on two support rollers attached to the upper surface of the support and is rotated in place so that the inclination of the cylindrical body is maintained in the range of 2 to 5 degrees, And a rotary filter cylinder connected to the drive gear of the drive motor mounted on the support and rotated by RPM 10 to 13 revolutions with a chain sprocket attached to the support spindle and a feed pipe inserted into the center of the projecting pipe to have a moisture content of 88 to 90 wt% A drainage guide pipe disposed at an open load side of the rotary filtration tube for guiding the waste discharged from the rotary filtration tube to the screw conveyer, and a drainage pipe for receiving the debris falling through the discharge guide pipe, And a screw conveyor for conveying the waste liquid to a residue processing unit.

In addition, as disclosed in Korean Patent Application No. 10-2014-0072196 (entitled: Solid-liquid Separator / June, 2003), an outlet having an accommodating space and a front end of the accommodating space is formed, A separating portion having a plurality of through holes penetrating the bottom surface of the accommodating space; A driving unit coupled to a front end or a rear end of the separation unit to reciprocate the separation unit forward and backward; A collision block installed at a predetermined distance from an outlet of the separator to collide with the separator when the separator is moved; And a drain part spaced apart from the lower part of the separating part and receiving a liquid passing through the through hole of the separating part.

1, Korean Patent Application No. 10-2005-0041466 (2005.05.18.) 2, Korean Patent Application No. 10-2007-0107952 (October 25, 2007). 3, Korean Patent Application No. 10-2011-0108320 (Oct. 21, 2011) 4, Korean Patent Application No. 10-2014-0072196 (Apr.

However, the conventional sludge disposal apparatuses described above have a problem in that the separation efficiency of the solid material and the liquid material in the sludge deteriorates.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a sludge treatment method and a sludge treatment method, And to provide a dewatering device.

In order to accomplish the above object, the present invention provides a sludge dewatering device comprising: a sludge dewatering device having a receiving space provided with a supply port through which sludge is fed, a stirring vane rotating by a stirring motor, A stirrer having a discharge port for discharging suspended solids suspended in the inside of the stirring barrel to the outside; A filtration plate which is arranged in a vertical direction so as to communicate with the storage space of the agitation tank and is divided into a drainage space which is separated from the liquid material and drained to the outside, a filter plate having a plurality of filtration holes arranged in the filtration tank, A sludge thickening means having a filter including a rotating plate formed of an elliptical plate shaped to rotate while opening and closing a filtration hole, and a power member rotating the rotating plates; A dewatering passage in which the filter is horizontally disposed between an inlet through which the suspension is introduced and an outlet through which the suspension is discharged to supply and discharge dewater discharged from the outlet of the stirring member; A dewatering means connected to the filter and having a reservoir for storing the filtrate filtered through the filter and having a drain for draining to the outside; A separating passage in which the filter is horizontally disposed between an inlet for receiving a suspension discharged through an outlet of the dehydrating device and a discharge port for discharging to the outside, an inner space spatially connected to a lower portion of the separating container, And a pressing member which is provided in the separating cylinder and is adapted to pressurize the floating matter moving through the upper portion of the filter in the direction from the upper side to the filtering plate so as to compress the filtrate, And a crimping means for crimping the crimping piece.

Wherein the storage tank is spatially connected to the storage tank through a connection pipe so that the filtrate stored in the storage tank flows into the storage tank; Wherein the reservoir and the agitator are spatially connected through a collecting pipe; And the recovery pipe is provided with a recovery pump adapted to pump the filtrate stored in the storage tank to the stirring tank.

The sludge dewatering apparatus according to the present invention as described above comprises sludge concentration means for performing solid-liquid separation and concentration of the supplied sludge through a condensate; A dewatering means for supplying and discharging suspended solids discharged from an outlet of the stirring member; And a compression unit adapted to receive and pressurize the suspended solids discharged through the outlet of the dehydrating unit to increase the efficiency of space utilization while improving the solid separation rate of the sludge, .

1 is a schematic view showing a sludge dewatering device according to an embodiment of the present invention.
2 to 3 are schematic views showing sludge thickening means applied to the sludge dewatering apparatus according to the present embodiment.
4 to 5 are schematic views showing a filter applied to the sludge dewatering device according to the present embodiment,
6 is a schematic view showing a dehydrating means applied to the sludge dewatering device according to the present embodiment.
7 is a schematic view showing a squeezing means applied to the sludge dewatering apparatus according to the present embodiment.
Figs. 8 and 9 are schematic views showing a pressing member constituting a squeezing means applied to the sludge dewatering apparatus according to the present embodiment. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, referring to the accompanying drawings, a pulp dewatering device according to a preferred embodiment of the present invention will be described in detail.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 to 9 are views showing a sludge dewatering apparatus according to an embodiment of the present invention. In the sludge dewatering apparatus 1 according to the present embodiment, in a sludge mixed with a solid matter and a liquid material, Are separately treated to prevent environmental pollution.

The sludge dewatering apparatus 1 according to this embodiment has a receiving space provided with a supply port 31 through which sludge is supplied and a stirring blade 333 rotated by a stirring motor 331 is rotatably fixed An agitating member 332 having an agitating member 332 and an outlet 34 for discharging suspended solids suspended in the agitating tank 332 to the outside; A filtration tube 22 which is vertically arranged so as to communicate with the accommodation space of the stirring barrel 332 and which is divided into a drainage space which is connected to separate the liquid material and drained to the outside, A rotary plate 213 having a filter plate 211 having a plurality of filtration holes 212 and an elliptical plate shaped to rotate while opening and closing a filtration hole 212 of the filtration plate 211, And a sludge thickening means (3) having a filter (21) including a power member (23) adapted to make the sludge.

That is, while the sludge supplied to the agitation tank 332 is stirred by the agitating member 33, the filtrate is separated from the sludge through the filtration holes 212 of the filtration plate 211 and is dehydrated.

Meanwhile, the stirring barrel 332 is provided with a feed barrel 311 provided with the feed port 31 so that sludge is supplied from the outside; The flocculant supply pipe 32 for flocculating the solid contained in the sludge is connected to the supply tank 311 so that the flocculant supplied to the supply tank 311 through the flocculant charging pipe 32 is combined with the sludge As a result, the solid content is agglomerated, and the solid-liquid separation is performed more smoothly.

In the above, the flocculant is preferably composed of an organic flocculant; Most preferably, it is made of a polymer.

In the sludge dewatering apparatus 1 according to the present embodiment, the sludge agitated in the agitation tank 332 is separated from the liquid material through the filter plate 211 of the filter unit 21.

At this time, the filtration holes 212 are prevented from being closed by the solids through the rotation of the rotating plates 213 constituting the filter 21, thereby preventing the filtration efficiency from being lowered.

As described above, the liquid material separated through the filter 21 is separately drained, and purified and purified through an unillustrated water purification apparatus.

In the sludge dewatering device 1 according to the present embodiment as described above, the power member 23 constituting the filter 21 includes a filtering motor 24 for generating a rotating force by receiving power, A movable gear 25 adapted to transmit the rotational force generated by the filtering motor 24 to the rotating plate 213 and a chain gear coupled to the shaft of the rotating plates to rotate by receiving the rotational force of the movable gear 25 26 and chain belts 27 coupled to the chain gears 26. [

In the sludge dewatering device 1 according to the present embodiment as described above, the sludge thickening means 3 supplies sludge supplied from the outside to the supply trough 311, When the flocculant is injected into the feed cylinder 311, the sludge is mixed with the flocculant and is moved to the stirring cylinder 332. While the sludge is stirred in the stirring cylinder 332, 211, the filtrate is filtered and drained. The solid matter from which the filtrate is separated is lifted up to form a suspended material, and the suspended material is discharged to the outside through the discharge port 34 provided in the stirring barrel 332 .

The sludge dewatering device 1 according to the present embodiment as described above is provided with an inlet 44 through which the suspended solids flow into and an outlet through which the suspended solids are discharged to the outside 45), the filter (21) being arranged in a horizontal plane; A dehydrator (42) having a drain (43) spatially connected to the bottom of the dehydrator (41) and having a drain port (43) for storing the filtrate filtered through the filter (21) 4).

That is, the suspended solids concentrated through the sludge thickening means 3 are separated from the filtrate through the filter 21 while passing through the dehydrating tub 41 and dewatered while dropping the filtrate naturally into the reservoir 42.

The filtrate stored in the reservoir (42) is preferably supplied to a separate purifier (not shown) through the drain port (43) and processed.

The sludge dewatering device 1 according to the present embodiment as described above is characterized in that the sludge dewatering device 1 is provided with an inlet 51 for receiving the suspended matter discharged through the outlet of the dehydrating means 4 and a discharge port 55 for discharging to the outside, A separator (52) in which the filter (21) is arranged in a horizontal plane; A reservoir 53 having an outlet 56 spatially connected to the lower portion of the separator 52 for storing the filtrate filtered through the filter 21 and draining to the outside; (5) having a pressing member (54) provided on the separating cylinder (52) and pressing the floating matter moving through the upper part of the filter (21) in the direction of the filter plate (211) .

That is, the suspended dehydrated water primarily supplied through the dehydrating means 4 is continuously supplied to the separating cylinder 52 and is compressed and filtered through the filter 21 and the compression member 54 while being discharged to the outside Secondary dehydration is performed.

Accordingly, the water content of the suspended matters discharged to the discharge port 55 is significantly lowered, and the treatment efficiency of the sludge is increased.

The reservoir 42 and the reservoir 53 are spatially connected through a connection pipe 62 so that the filtrate stored in the reservoir 42 flows into the reservoir 53; The reservoir 53 and the agitator 332 are spatially connected through a return pipe 61; The recovery pipe 61 is preferably provided with a recovery pump 6 for pumping the filtrate stored in the storage tank 53 to the stirring tank 332.

That is, the filtrate separated from the suspended material through the dewatering means 4 and the squeezing means 5 through the recovery pipe 61 is recovered and filtered again by the stirring barrel 332, so that the treatment quality of the sludge .

In the sludge dewatering apparatus 1 according to the present embodiment, the compression member 54 is pressurized in the form of a plate in which one end is axially rotatably fixed to the separation cylinder 52 And a compression cylinder 542 in which a piston rod is fastened to one end of the compression plate 541. The compression cylinder 542 compresses the compression plate 541, It is preferable that the float passing through the upper portion of the filtration plate 211 is squeezed and dewatered while repeating the squeezing and releasing operations.

A plurality of compression protrusions 543 are formed on the surface of the compression plate 541 to improve the contact area with the floating matter and further improve the compression efficiency by facilitating the pressing of the floating matter into the inside thereof. ; Most preferably, the pressing projection 543 is a V-shaped frame coupled to the surface of the pressing plate 543.

Meanwhile, the stirring barrel 332 is provided with a flow level controller for sensing and adjusting the flow rate, so that the dewatering operation can be performed while adjusting the dewatering capacity of the sludge, It is possible.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the scope of the present invention as defined by the appended claims and their equivalents. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: sludge dewatering device 2: filtration member
21: filter 211: filtration plate
212: filtration ball 213: spindle
22: Filter tube 23: Power member
24: Filtration motor 25:
26: chain gear 27: chain belt
3: sludge thickening means 31:
311: feed pipe 32: coagulant feed pipe
33: stirring member 331: stirring motor
332: stirrer 333: stirring blade
34: Outlet 4: Dewatering means
41: dehydrator 42: reservoir
43: drain 44: inlet
45: outlet 5: crimping means
51: inlet 52:
53: storage tank 54:
541: compression plate 542: compression cylinder
543: Crimp projection 55: Outlet
56: Outlet 6:
61: collecting pipe 62: connecting pipe

Claims (2)

An agitating cylinder 332 having a receiving space provided with a supply port 31 to which sludge is supplied and in which a stirring vane 333 rotated by a stirring motor 331 is rotatably fixed, A stirring member 33 having an outlet 34 for discharging floating matters floating in a solid state and connected vertically so as to communicate with the accommodation space of the stirring barrel 332 to separate the liquid material from the outside, A filtering plate 211 having a plurality of filtering holes 212 arranged in the filtering barrel 22 and having a length and a filtering hole 212 of the filtering plate 211, A sludge thickening means (3) comprising a filter (21) having rotating plates (213) composed of an elliptical plate shaped to rotate while being opened and closed and a power member (23) rotating the rotating plates (213); The filter 21 is arranged between the inlet 44 through which the suspension is introduced and the outlet 45 through which the suspension is discharged so as to supply and dehydrate the suspension discharged from the discharge port 34 of the stirring member 33, And a drain port 43 which is spatially connected to the bottom of the dehydrator 41 and stores the filtrate filtered through the filter 21 and drained to the outside, (4) having a suction port (42); Wherein the filter 21 is arranged between the inlet port 51 for receiving the suspended matter discharged through the outlet 45 of the dehydrating means 4 and the discharge port 55 discharged to the outside, A reservoir 53 having an outlet 56 spatially connected to the lower portion of the separator 52 for storing the filtrate filtered through the filter 21 and drained to the outside, A compression means (5) provided on the separating cylinder (52) and having a pressing member (54) for compressing the floating matter moving through the upper portion of the filter (21) in the direction toward the filtering plate (211) from above; ≪ / RTI >
The reservoir 42 and the reservoir 53 are spatially connected through a connection pipe 62 so that the filtrate stored in the reservoir 42 flows into the reservoir 53;
The reservoir 53 and the agitator 332 are spatially connected through a return pipe 61;
The sludge dewatering device (1) according to any one of the preceding claims, wherein the recovery pipe (61) is provided with a recovery pump (6) for pumping the filtrate stored in the storage tank (53)
The pressing member (54)
A compression plate 541 in the form of a plate whose one end is axially rotatably fixed to the separation cylinder 52 and a compression cylinder 541 in which a piston rod is fastened to one end of the compression plate 541 542);
On the surface of the press plate 541,
A plurality of pressing projections 543 are formed;
The pressing projections 543 are formed by pressing,
And a 'V' shaped frame coupled to the surface of the compression plate (541). delete

Images