KR100887938B1 - Sludge thickening combined coagulation device - Google Patents

Abstract

An apparatus for cohering and concentrating sludge is provided to improve efficiency of concentrating sludge by arranging a screw type solid-liquid separator in an upper part of the apparatus. An apparatus for cohering and concentrating sludge comprises the following units. A cohesion tank includes a sludge flowing hole and a sludge supplying hole. A cohesion stirrer is driven by a driving motor to mix, cohere, and transfer the flowing sludge. A solid-liquid separator(300) is equipped with a plurality of fixing rings arranged in a horizontal direction to concentrate sludge cohered in the cohesion tank, a spacer for maintaining an interval between fixing rings, and a screw feeder driving motor located in the plural fixing rings.

Description

SLUDGE THICKENING COMBINED COAGULATION DEVICE}

The present invention relates to a device for simultaneously agglomeration and concentrating excess sludge generated in a sewage treatment plant, wastewater treatment plant, etc. More specifically, at least one solid-liquid separator is arranged horizontally on the top of the coagulation tank to simultaneously perform the flocculation and concentration of the excess sludge For example, the present invention relates to a sludge flocculation and concentrating device which can improve the concentration efficiency by adjusting the treatment concentration according to the type of sludge, and minimizes weight and size and extends the life of the device.

Generally, sludge from sewage, sewage, or plant wastewater generated in factories, sewage treatment plants, wastewater treatment plants, etc. is treated by methods such as landfilling, incineration, recycling by minimizing the amount of sludge after removing moisture to the maximum using a dehydrator. In addition, the amount of solid waste is minimized by transporting solidified sludge after removing water and loading it into a waste dump.

The excess sludge produced by separating the upper rack in the final sedimentation tank of sewage treatment plant or wastewater treatment plant is usually low concentration (water content of 99.6 ~ 98.5% by weight), and the sludge of low concentration is various methods such as gravity concentration, mechanical concentration, etc. The amount is reduced by concentration and then dehydrated in a dehydrator to reduce the amount.

Therefore, the conventional sludge concentration system has been developed and operated by a gravity thickening tank, a centrifugal concentrator, various mechanical concentrators in which a flocculation tank and a concentrator are installed in parallel, and a concentrator which simultaneously performs coagulation and concentration at the base. A tank, a coagulant tank, a concentrator, and a dehydrator are connected in series through a pipeline, and a coagulant tank is connected to the coagulant tank in parallel with a sludge storage tank, while agitation means are connected to the sludge storage tank, the coagulant tank, and the coagulant tank. It is formed by respectively installing the pumps in the discharge line of the sludge storage tank and flocculant tank, respectively.

This conventional sludge concentration system separates the supernatant by overflowing the sedimentation tank, separates the supernatant, and deposits the sludge of the low concentration precipitated in the storage tank, and the sludge stored in the sludge storage tank is transferred to the coagulation tank by the pump. At the same time, the coagulant stored in the coagulant tank is injected into the coagulant tank by a pump, and the sludge and the coagulant are mixed by agitation means to form a floc, and then transferred to a concentrator and concentrated to a water content of 95 to 97% by weight. The sludge concentrated at 95 ~ 97 wt% of water content is dehydrated at less than 80 wt% of water content in dehydrator.

However, the conventional sludge concentrator as described above is not only able to perform the coagulation and concentration of excess sludge at the same time, but also the concentration efficiency is lowered because it is not possible to adjust the treatment concentration according to the type of sludge, the coagulation and concentration of excess sludge Since it has to be carried out in a separate part, the weight and size of the device is increased and the device life is reduced.

In order to solve the problems described above, Korean Utility Model Publication No. 20-0392069 uses a flocculant to flocculate resinous suspended solids in the wastewater to form flocs of a predetermined size so that the floc lumps are concentrated on the drum screen of the concentrator. Disclosed is a sludge flocculation and concentrating device in which a sludge flocculation treatment function for treating sludge in wastewater is improved so as to filter the sludge in the wastewater without going out together with the concentrated water.

However, in the conventional sludge flocculation and concentrating device, since the diameters of the stationary disc and the movable disc are almost the same, the agglomeration stirrer and the movable disc for cleaning the screen gap are stirred and oscillated at the same rotational speed by rotation of the same rotating shaft. This operation method inevitably must match the rotational speed to the stirring for optimal flocculation, the rotational speed of the movable plate for the optimal cleaning is ignored and the solid-liquid separation performance, which is the basic function of the concentrator, is deteriorated. In addition, during the continuous operation, the swing motion of the movable plate becomes constant, resulting in a blockage of the gap due to the sticking of solids between the remaining movable plate and the fixed plate, resulting in a decrease in solid-liquid separation performance. It is heavy and there is a problem of rising manufacturing costs.

In addition, in the conventional sludge flocculation and concentrating device, a solid-liquid separator including a fixing ring is installed upright in the concentration tank in the sludge liquid, and solids are discharged together with the separation liquid due to the water pressure difference caused by the vertical depth of the sludge liquid. When the water pressure is high, the sludge floc blocks the gap between the fixing ring and the solid-liquid separation, that is, the concentration performance is lowered, and the concentration efficiency is greatly reduced.

Therefore, the object of the present invention improves the concentration efficiency by adopting the solid-liquid separation method by gravity by arranging the solid-liquid separator horizontally on one side of the top instead of the central upright solid-liquid separator to solve the problem of the flocculation, concentrator. It is to provide a sludge flocculation and concentration apparatus that can facilitate the concentration control.

Another object of the present invention is to provide a sludge flocculation and concentrating device for separately controlling the rotational speed for optimum stirring and the drive speed of the screw for optimal concentration by separately installing the stirring motor of the coagulation tank and the driving motor of the concentrator. .

Another object of the present invention is to install and detach a plurality of cleaning pins on the outer circumferential surface of the double spiral braid of the screw feeder at regular intervals as a cleaning means to maintain the continuous cleaning performance of the gap between the fixed ring ring cleaning performance by scraping action with a superior cleaning efficiency than swinging action. It is to provide a sludge flocculation and concentrating device that can be easily installed while maintaining the cleaning pin and reduce the installation cost.

In order to achieve the above object, in the present invention, the sludge inlet hole is formed so that the sludge is introduced into the lower body and the coagulation tank portion is formed a sludge supply hole for supplying the coagulation sludge to the solid-liquid separator installed in the upper portion; An agglomeration stirrer disposed at the center of the agglomeration tank and driven by a driving motor to induce mixing, agglomeration and upward transfer of the introduced sludge; And a plurality of retaining rings installed integrally with the agglomeration tank part and horizontally arranged to solidify the sludge by solid-liquid separation of the sludge agglomerated in the agglomeration tank part, and to maintain a small gap between the fixed ring and the fixed ring. Spacers, a fixing ring fixing shaft for fixing the fixing ring and the spacer, a screw feeder driving motor accommodated in the plurality of fixing rings, a screw shaft connected to the screw feeder driving motor, and an outer peripheral surface of the screw shaft. A screw feeder helically coupled to the screw feeder to have a double braid having a screw shape, a plurality of cleaning pin fixing parts fixedly formed at regular intervals along a gap outer circumferential surface between the double braids of the screw feeder, and the cleaning pin fixing part Detachable and formed to clean the gap between each retaining ring spaced by the spacer It has a plurality of sludge flocculation Greater concentration apparatus comprising cleaning pin into the solid-liquid separating section formed is provided.

The solid-liquid separator and the solid-liquid separator are symmetrical with each other and are configured on an agglomeration tank.

The cleaning pin fixing part is installed on the outer circumferential surface of the double blade of the screw feeder, a cross section is formed in the shape of a rectangular plate and is fitted with fittings having a cylindrical shape curved at one end.

The cleaning pin may include a removal cleaning blade formed to clean the sludge sandwiched between the microgaps of the plurality of fixing rings; A fastening groove formed so that a central portion thereof is opened at the other side of the removal cleaning blade; A fixing groove formed at one side of the inner surface of the fastening groove so as to be seated on the cleaning pin fixing part; A catching jaw formed to prevent the catching hole seated in the fixing groove from being separated; And a disassembly hole positioned at a cleaning blade to facilitate disassembly of the cleaning pin.

Further comprising a filtrate collecting portion formed in the lower portion of the solid-liquid separator.

The drain hole in the lower portion of the filtrate collecting portion is formed with a wear-shaped control unit for adjusting the filtrate discharge level.

As described above, the sludge flocculation and concentrating device according to the present invention has an effect of increasing the concentration efficiency of the sludge by easily disposing the cleaning pin multi-plate screw-type solid-liquid separator horizontally on top. .

In addition, the sludge flocculation and concentrating device of the present invention by installing the drain hole formed on one side of the concentration tank differently to be processed according to the type or concentration of the sludge, concentration control is optimized to improve the recovery rate and dehydration power according to dehydration I have it.

In addition, the sludge flocculation and concentrating device of the present invention is installed separately from the agitation motor of the coagulation tank and the driving motor of the concentrator separately to control the rotational speed for optimum agitation and the drive speed of the screw for the optimal concentration to achieve optimal flocculation and It has the effect of obtaining the optimal concentration performance.

In addition, the sludge flocculation and concentrating device of the present invention is to attach a plurality of cleaning pins to the outer circumferential surface of the double spiral braid at regular intervals so that the cleaning is performed by a scraping action with only a simple drive of the screw feeder, It is easy to install and reduce the installation cost, and it is easy to work when combining and replacing the cleaning pin, and also has the effect of reducing the manufacturing cost by the simple structure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of related well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention.

Figure 1 shows a front structure of the sludge flocculation and concentrating device according to an embodiment of the present invention, Figure 2 shows a planar structure of the sludge flocculation and concentrating device according to an embodiment of the present invention, Figure 3 1 is a cross-sectional view of the horizontal solid-liquid separator of FIG. 1, and FIG. 4 is a right side of the horizontal solid-liquid separator of FIG. 1, and FIG. 5 shows the main part of the horizontal solid-liquid separator of FIG. 6 illustrates an installation state of the cleaning pin in the cleaning pin fixing part of FIG. 5.

Sludge inlet hole 110 is formed to penetrate in and out of the lower end of the main body of the cylindrical or rectangular box shape to inlet the sludge, and the solid-liquid separation unit 300 installed on one side or the other side of the main body to supply the coagulated sludge. A coagulation tank part 100 having a supply hole 121 and a drainage hole 122 for discharging the concentrated filtrate is disposed, the coagulation tank part 100 is disposed, the lower side of the central portion of the coagulation tank part 100 is introduced Is connected to the stirrer shaft 210, the stirrer drive motor 240 for driving the stirrer shaft 210, the stirrer shaft 210 is formed to induce the concentration, mixing and flocculation of the sludge and the upward conveyance of the coagulated sludge The sludge stirrer 200 formed by the stirring blade 220 and the stirring shaft support part 230 for holding the swing of the stirrer, the filtrate collecting part 120 of the coagulation tank part 100 is accommodated. Aggregated sludge It is formed so as to concentrate the sludges and solid-liquid separation is composed of a solid-liquid separation unit 300 is disposed horizontally to the ground.

The solid-liquid separator 300 includes a plurality of fixing rings 311, a spacer 330, a fixing ring fixing shaft 320, and a fixing part supporting plate 360. ), The concentrated sludge discharge part 380, and the screw feeder 340 and the screw feeder driving motors 350a and 350b for discharging the filtrate from the aggregated sludge accommodated inside the screen unit 310 and transferring the concentrated sludge The screw feeder 340 is connected to the rotation axis of the screw feeder drive motor 350 and the screw shaft 341 is formed to rotate at a predetermined speed ratio, and the spiral coupling with respect to the outer peripheral surface of the screw shaft 341 And a double screw blade 342 consisting of double blades 342a and 342b so as to have a screw thread, and a plurality of cleaning pin fixing parts 410 fixedly fixed to a gap outer circumferential surface of the double blades 342a and 342b at regular intervals. ) And the above Coupled to Lee ningpin fixing unit 410 is composed of a plurality of cleaning pins 400 formed so as to clean the small gap between the retaining ring 311, spaced apart by the spacers 330.

The cleaning pin fixing part 410 has a cross-sectional shape of a rectangular plate and has a fitting locking hole 411 having a curved cylindrical shape at one end thereof, and an outer circumferential surface between the gaps of the double blades 342a and 342b. It is composed of a support groove 372 which is located on the other side facing the fitting locking hole 371 so as to be horizontally fixed to the screw shaft 341 and grooved inward.

The cleaning pin 400 is formed of a foil-shaped thin plate and formed on one side to clean the microgap between the fixing ring 311 to be introduced into the cleaning blade 401, the other side facing the cleaning blade 401 Fastening groove 402 formed to be opened to the outside in, the locking projection 404 is formed on one side of the inner circumferential surface of the fastening groove 402 for supporting the fitting locking 411 of the cleaning pin fixing part 410 not to be separated. ) And a disassembly hole 405 to facilitate disassembly of the cleaning pin 400.

The sludge stirrer 200 forms agglomeration and flocculation by mixing the sludge and the coagulant in the accommodating part of the coagulation tank part 100.

2 shows a horizontal solid-liquid separator 300 is installed symmetrically on the left and right sides. The solid-liquid separator 300 includes the coagulated sludge inlet 370, the screen unit 310, the concentrated sludge discharge unit 380, the screw feeder 340 on which the cleaning pin 400 is installed, and the screw feeder driving motor 350a. And 350b) are provided respectively.

The sludge flocculated and flocculated in the sludge flocculation tank part 100 flows into the solid-liquid separator 300 through the flocculation sludge inlet 370 and is concentrated by the screw feeder 340 on which the cleaning pin 400 is placed. The filtrate is detached and discharged by gravity from the screen unit 310 while being transferred toward the sludge discharge unit 380, and the concentrated sludge is discharged through the concentrated sludge discharge unit 380.

The agglomeration tank part 100 is a body having a shape of a body, and a sludge inflow hole 110 formed to penetrate in and out at a lower end side of the sludge inlet, and a supply hole 121 and a drain hole at one side of the body upper part ( A filtrate collecting part 390 having a 122 is provided.

At this time, the filtrate collecting unit 390 is a sludge solid-liquid separator 300, which will be described later is installed, the sludge flowing over from the sludge agitator 200 is formed on one side, the filtrate treated with solid-liquid separation is drained The drain hole 122 is formed on the other side as much as possible.

The filtrate detached by gravity in the sludge solid-liquid separator 300 is isolated from the agglomeration tank 100 and the filtrate collecting part 390 located in the lower part of the solid-liquid separator 300 is drainage and drainage of the filtrate on one side. A drain hole 122 provided with a ware to adjust the water level is provided, and the supply hole 121 flows to the solid-liquid separator 300 by flowing the sludge which is flocculated and flocculated in the coagulation tank part 100. This is made up.

At this time, the drain hole 122 of the filtrate collecting part 390 is formed on the outer side of the filtrate collecting part 390, the wear type to adjust the filtrate drainage level from the bottom surface of the filtrate collecting part 390 to a set height It is preferable that the level control gate of. That is, by adjusting the water level of the filtrate collecting unit 390, the lower portion of the solid-liquid separator 300 is immersed in the filtrate to adjust the pore height from the bottom surface of the filtrate to adjust the concentration of sludge.

That is, if the filtrate level of the filtrate collecting unit 390 is low, the concentration level becomes low when the water level is increased based on the bottom part, and the concentration level becomes high when the water level decreases, and the concentration of the concentrated sludge can be freely adjusted due to the difference of the filtrate levels. Will be.

In addition, the filtrate collecting unit 390 is preferably formed so as to be parallel to both sides of the sludge agglomeration tank 100, the central axis based on the central rotation axis 210 of the stirring unit 200. That is, the solid-liquid separator 300 including the filtrate collector 390 is formed to double the sludge treatment efficiency by installing a plurality of filtrate separators 300a and 300b disposed in the coagulation tank 100. to be.

On the other hand, the sludge agglomeration, the stirrer 200 is disposed at the lower center side of the filtrate collection portion 390 of the coagulation tank 100 to induce concentration and mixing of the introduced sludge and coagulant, and to induce upward conveyance of the coagulation and flocculation sludge. The stirrer shaft 210 and the stirrer blade 220 and the stirrer shaft support unit 230 are formed to be rotated at the same time in conjunction with the stirrer shaft 210 to be formed.

At this time, the stirrer shaft 210 is rotated in conjunction with the stirrer drive motor 240, the stirrer shaft 210 extends in the vertical direction in the coagulation tank portion 100, while the stirrer formed on the bottom inner peripheral surface Corresponding to the shaft support 230 and the rotary bushing to facilitate the rotation.

In other words, the stirrer shaft 210 of the long shaft connected to the stirrer drive motor 240 adjusts the concentrated agglomeration of the sludge introduced as a flocculant through the sludge inlet hole 110, which is applied to the stirring blade 220 described above. Is implemented. At this time, the stirring blade 220 is coupled to the stirrer shaft 210 by the stirrer shaft support 230 to form a kind of impeller to form a rotary swirl and upward swirl flow of the introduced sludge.

That is, the stirring blade 220 forms a strong mixing of the sludge and flocculant due to the vortex of the sludge and adjusts the upturn swirl, while inducing the sludge is mixed with the firm assembly of the floc (造粒) Will form.

The solid-liquid separation unit 300 is formed to dehydrate the filtrate by solid-liquid separation to concentrate the sludge by excluding the filtrate from the sludge collected in the filtrate collecting part 390 of the cohesion tank unit 100 inside the ground A screen portion 310 composed of a plurality of fixing rings 311, spacers 330, etc. arranged horizontally with respect to the coagulated sludge inlet 370, the concentrated sludge outlet 380, the screw feeder accommodated in the inner cylinder ( 340 and the screw feeder driving motors 350a and 350b, which are fixed to the outer circumferential surfaces of the double blades 342a and 342b of the screw feeder 340 at regular intervals, and are spaced apart by the spacer 330 of the screen unit 310. A plurality of cleaning pins 400 for cleaning the micro gaps between the fixed ring 311 is provided.

That is, the solid-liquid separator 300 is a plurality of fixing rings 311 are stacked at a predetermined interval by the fixing ring-fixing shaft 320 and the spacer 330.

At this time, a plurality of cleaning pins 400 are inserted between the gaps of the fixing ring 311 so that the cleaning pins 400 interlocked with the rotation of the screw feeder 340 are inserted into the gaps between the fixing rings 311. It is formed to clean the sludge.

In this case, the cleaning pin fixing part 410 has a cross section forming a rectangular plate shape and a fitting catch 411 having a cylindrical shape curved at one end of the rectangular plate is formed, and the double blades 342a and 342b gaps. It is composed of a support groove 372 which is located on the other side facing the fitting locking hole 371 to be grooved inward so as to be horizontally fixed to the screw shaft 341 on the outer peripheral surface therebetween.

In addition, the cleaning pin 400 is formed of a foil-shaped thin plate and is formed to be introduced into the cleaning blade 401, cleaning the clearance gap between the fixing ring 311 on one side, facing the cleaning blade 401 A fastening groove 402 which is formed to be opened to the outside on the other side, a locking jaw which is formed on one side of the inner circumferential surface of the fastening groove 402 to support the fitting locking holes 411 of the cleaning pin fixing shaft 410 so as not to be separated. 404 and a disassembly hole 405 that facilitates disassembly of the cleaning pin 400.

The cleaning pin 400 is coupled to the cleaning pin fixing part 410 which will be described later through the opening fastening groove 402, and is cleaned due to the locking step 404 and the fixing groove 403 of the cleaning pin 400. The fastening mechanism of the pin fixing part 410 and the locking hole 411 to form a strong fixed coupling, while replacing the fastening by detaching as hanging on the disassembly hole 405 with a simple tool when replacing it has a simple and stable mounting.

The cleaning pin 400 is inserted into the spiral phase for each gap between the fixing rings 311 to effectively remove the sludge caught in the micro-gaps between the fixing rings 311 when the sludge is concentrated, and the cleaning on the spiral is excluded from the filtrate. This is to increase the solid-liquid separation efficiency by making the amount constant.

The cleaning pin 400 is assembled to form an acute angle with respect to the tangential direction of the screw shaft 341, so that the sludge between the gaps is introduced into the inside during cleaning by rotation so that the cleaned sludge is not discharged to the outside, thereby increasing the solid recovery rate. You will have a constant cleaning.

The solid-liquid separator 300 forms a circular hole of a diameter that does not interfere when the screw feeder 340, which will be described later, rotates inside the plurality of circular fixing rings 311, and is fixed around 3 to 4 pieces. At the same time as forming the piece 230 integrally and the support hole 240 in the fixing piece 230, inserting a spacer 330 of a predetermined thickness between the fixing piece 230, the support hole ( 240 and the spacer 330 by inserting the fixed ring fixed shaft 320 to form a small gap (g) of 0.2 ~ 1mm between the fixed ring 310 and at the same time formed in the fixed ring 311 The insertion space portion S of the screw feeder 340 is formed by the hole.

The screw feeder 340 has a double screw blade (342a, 342b) is integrally formed on the outside of the screw shaft 341 is inserted into the screw insertion space (S) and at the same time the both ends of the fixing ring 360 and After the condensed sludge inlet 370 and the concentrated sludge outlet 380 are configured, the sludge is supported by installing the screw feeder driving motor 350 on the outer wall of the solid discharge part 150 on the side of the concentrated sludge outlet 380. The aggregating unit 200 is solid-liquid separation and concentration of the coagulation sludge supplied from the coagulation tank unit 100 to be conveyed to the concentrated sludge discharge unit 380 side.

And the present invention by adjusting the number of rotations of the feeder motors (340a, 340b) of the screw feeder 340 when the solid-liquid separation of the sludge as described above to control the water content solid-liquid separation efficiency, that is, the concentration of the solid content (g) do. Concentration of the thickening sludge is lowered as the rotational speed of the screw feeder 340 is increased, while the concentration is increased as the rotational speed is lowered. For example, when the rotational speeds of the feeder motors 340a and 340b are driven at 15 rpm, the moisture content of the solid content is 2%. When the rotational speeds of the feeder motors 340a and 340b are driven at 10 rpm, the moisture content of the solid content is 4%, and when the rotational speed of the feeder motors 340a and 340b is driven at 5 rpm, the moisture content of the solid content may be 8%.

When the sludge solid-liquid separation as described above, a part of the solid content is entered into the micro gap (g) formed between the fixing ring 311, the solid content entered into the micro gap (g) is a double blade of the double screw blade (342) ( The cleaning pin 400 installed at regular intervals in the spiral direction between the 342a and 342b rotates together with the screw feeder 340 and continuously cleans and reproduces the microgap g, and the solid content is automatically inserted into the screw insertion space. It is recovered to the portion (S).

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a front view of the sludge flocculation and concentrating device according to an embodiment of the present invention

2 is a plan view of the sludge flocculation and concentrating device according to an embodiment of the present invention

3 is a cross-sectional view of the horizontal solid-liquid separator of FIG.

4 is a right side view of the horizontal solid-liquid separator of FIG.

5 is a perspective view of main parts of the horizontal solid-liquid separator of FIG.

6 is an exemplary view illustrating a mounting state of a cleaning pin in the cleaning pin fixing part of FIG. 5.

Explanation of symbols on the main parts of the drawings

100: agglomeration tank 110: sludge inflow hole

150: sludge discharge part 200: flocculator

210: stirrer shaft 220: stirring blade

230: stirrer shaft support 240: stirrer drive motor

300: solid-liquid separator 310: screen portion

311: fixing ring 320: fixing ring fixing portion

330: spacer 340: screw feeder

341: screw shaft 342: screw blade

350: screw feeder drive motor 360: retaining ring support plate

370: coagulated sludge inlet 380: concentrated sludge outlet

390: filtrate collector 400: cleaning pin

410: cleaning pin fixing part

Claims (6)

In the sludge flocculation and concentrator, An agglomeration tank part in which a sludge inflow hole formed to introduce sludge in the lower part of the main body and a sludge supply hole for supplying agglomerated sludge to the solid-liquid separator installed in the upper part of the main body; An agglomeration stirrer disposed at the center of the agglomeration tank and driven by a driving motor to induce mixing, agglomeration and upward transfer of the introduced sludge; And It is installed integrally with the agglomeration tank and a plurality of fixed rings horizontally arranged to concentrate the sludge by solid-liquid separating the sludge agglomerated in the agglomeration tank, and for maintaining a small gap between the fixed ring and the fixed ring A spacer, a fixed ring fixed shaft for fixing the fixing ring and the spacer, a screw feeder drive motor accommodated in the plurality of fixed rings, a screw shaft connected to the screw feeder drive motor, and an outer peripheral surface of the screw shaft. A screw feeder coupled in a helical shape to have a double braid having a screw shape, a plurality of cleaning pin fixing parts fixedly formed at regular intervals along a gap outer circumferential surface between the double braids of the screw feeder, and detachable to the cleaning pin fixing part. And to clean the gap between each of the fixing rings spaced by the spacer. Sludge agglomeration and concentrating device comprising a solid-liquid separator consisting of a plurality of cleaning pins. According to claim 1, wherein the solid-liquid separator and the solid-liquid separator is characterized in that the coagulation and concentrating device, characterized in that configured on top of the coagulation tank. According to claim 1, wherein the cleaning pin fixing portion is installed on the outer peripheral surface of the double blade of the screw feeder, sludge agglomeration, characterized in that the cross section is formed in the shape of a rectangular plate and the fitting hanger having a curved cylindrical shape on one side end And thickener. The method of claim 1, wherein the cleaning pin A removal cleaning blade formed to clean the sludge sandwiched between the microgaps of the plurality of fixing rings; A fastening groove formed so that a central portion thereof is opened at the other side of the removal cleaning blade; A fixing groove formed at one side of the inner surface of the fastening groove so as to be seated on the cleaning pin fixing part; A catching jaw formed to prevent the catching hole seated in the fixing groove from being separated; And Sludge agglomeration and concentrating device, characterized in that consisting of the decomposition hole located in the cleaning blade to facilitate the cleaning pin disassembly. The sludge agglomeration and concentrating device of claim 1, further comprising a filtrate collecting part formed under the solid-liquid separator. delete

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