KR101804350B1 - Dehydrating apparatus of sludge - Google Patents

Dehydrating apparatus of sludge Download PDF

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Publication number
KR101804350B1
KR101804350B1 KR1020160019965A KR20160019965A KR101804350B1 KR 101804350 B1 KR101804350 B1 KR 101804350B1 KR 1020160019965 A KR1020160019965 A KR 1020160019965A KR 20160019965 A KR20160019965 A KR 20160019965A KR 101804350 B1 KR101804350 B1 KR 101804350B1
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South Korea
Prior art keywords
filter
cleaning liquid
sludge
filter plates
passage
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KR1020160019965A
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Korean (ko)
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KR20170098063A (en
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문석진
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(주)유천엔지니어링
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/122—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/06—Sludge reduction, e.g. by lysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/06—Dehydrators

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Disclosed is a disposal sludge dewatering apparatus capable of rapidly and effectively removing impurities sticking to a filter plate and a filter fabric, thereby increasing the dewatering efficiency of the disposal sludge. The waste sludge dewatering apparatus according to the present invention comprises a device body having a plurality of filter plates, a guider for slidably supporting the plurality of filter plates, a filter plate drive unit installed on the device body for horizontally moving the filter plates, A plurality of filter cloths, and a cleaning liquid supply unit. The plurality of filter plates have sludge receiving grooves provided on at least one surface thereof, passages formed in the thickness direction, and connection passages connecting the sludge receiving grooves and the passages, and are arranged so as to be accessible and spaced from each other. A plurality of filter cloths are disposed on at least one surface of each of the plurality of filter plates so as to face sludge receiving grooves for dewatering the waste sludge to be caked into a plurality of filter plates. The washing liquid supply unit is installed to be connected to at least one of the plurality of filter plates to supply the washing liquid to the sludge receiving grooves through the passage and the connecting passage of each of the plurality of filter plates.

Figure R1020160019965

Description

[0001] DEHYDRATING APPARATUS OF SLUDGE [0002]

The present invention relates to a waste sludge dewatering apparatus, and more particularly, to a waste sludge dewatering apparatus for dewatering waste sludge using a filter cloth to form a cake.

Generally, a so-called filter press type device is widely used as a waste sludge dewatering device.

1 and 2 are for explaining a conventional filter press type waste sludge dewatering apparatus.

1 and 2, a conventional waste sludge dewatering apparatus 30 includes a filter cloth 10 in which two nonwoven fabrics 12, 14 of polypropylene are connected by a connecting cloth 16 in the middle, A filter plate 20 is used, in which the filter plate 10 is fitted on both sides. The upper ends of the filter cloths 10 are mutually detachable by the velcro tapes 17 and 18, and the lower portions of the filter cloths 10 are structured such that they can be coupled to and separated from each other by a binding strap 19. The filtration plate 20 has a structure in which a sludge inlet 22 is provided at the center and a discharge pipe 24 is provided at a side of the filtration plate 20 to discharge a filtrate (water) having passed through the filter cloth 10.

A conventional filter press type waste sludge dewatering device 30 is provided with a plurality of filtration plates 20 overlaid with a filter fabric 10 between a fixing plate 32 and a pressing portion 34, And presses the filter plate 20 with the pressing portion 34 while supplying the sludge. At this time, the water in the sludge passes through the filter cloth 10 sandwiched between the adjacent filter plates 20, is discharged to the discharge pipe 24 on the side of the filter plate 20, and falls into the channel 36. Then, the sludge is filtered by the filter cloth 10 to be in a cake state and pressured for a predetermined time. After the pressure on the filter plate 20 is released, the sludge falls down from the filter cloth 10 and is collected.

Thus, in the conventional waste sludge dewatering device 30, the sludge is introduced from the side of the fixing plate 32 and filled in the side of the pressure plate 34 sequentially, whereby the dehydration of the sludge is performed by the compression of the side of the fixing plate 32 and the pressure plate 34 After the dewatering of the sludge is completed, the filter plate 20 is separated sequentially from the side of the pressure plate 34, and the cake-shaped sludge is removed. Therefore, the dewatering and desorbing time of the sludge is very long, and there is a problem that the filter cloth 10 provided on the filter plate 20 is replaced and cleaned after separation of the sludge cake.

In view of this point, the applicant of the present invention has proposed a method of automatically moving the filter cloth by moving the vertical actuator (air cylinder) through the patent application No. 2007-0094508 and the patent application No. 2008-0066517, whereby the sludge cake of the filter cloth is automatically The present invention has been made in view of the above problems.

However, since the conventional filing invention of the present applicant has a function of cleaning the filter cloth, there is no cleaning function for the filter plate installed in contact with the filter cloth, so that when the foreign substance such as sludge is attached to the filter plate, Problems were found to be degraded.

Patent Registration No. 0916338 (2009. 09. 08) Patent Registration No. 1059895 (Aug. 29, 2011)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a disposal sludge dewatering device capable of rapidly and effectively removing foreign matter sticking to a filter plate and a filter cloth after a dewatering process of the disposal sludge, The purpose is to provide.

According to an aspect of the present invention, there is provided a waste sludge dewatering apparatus including a sludge receiving groove formed on at least one surface of a sludge receiving groove, a passage formed in a thickness direction of the sludge receiving groove, A plurality of filter plates arranged to be accessible and spaced from each other; An apparatus main body having a guider for slidably supporting the plurality of filter plates; A filter plate driving unit installed on the apparatus body for horizontally moving the filter plates; A plurality of filter cloths disposed on at least one surface of each of the plurality of filter plates so as to face the sludge receiving grooves so as to dehydrate the waste sludge introduced into the plurality of filter plates into a cake; And a washing liquid supply unit connected to at least one of the plurality of filter plates to supply the washing liquid to the sludge receiving groove through the passage and the connecting passage of each of the plurality of filter plates.

Wherein each of the plurality of filter plates is provided with a pair of the passage and the connection passage so as to be spaced apart from each other with the sludge receiving groove interposed therebetween and the cleaning liquid supplied from the cleaning liquid supply unit through any one of the pair of passages, And the washing liquid supplied to the sludge receiving grooves may be discharged through the other one of the other passages.

Wherein the cleaning liquid supply unit includes a cleaning liquid supply pipe connected to any one of the pair of passages provided in any one of the plurality of filter fill rates for supplying the cleaning liquid and a cleaning liquid recovery unit connected to the other passage for cleaning liquid recovery, A cleaning liquid reservoir for storing a cleaning liquid, a pipe for storing the cleaning liquid, a cleaning liquid reservoir for storing the cleaning liquid and connecting the cleaning liquid supply pipe and the cleaning liquid recovery pipe, And a pump for pumping it to the reservoir for recovery.

The path through which the cleaning liquid is discharged from the pair of passages provided in each of the plurality of filter plates may be disposed on the upper side relative to the path through which the cleaning liquid is supplied.

The filtrate passing through the plurality of filter cloths and flowing toward the sludge receiving grooves of each of the plurality of filter plates may be discharged through the connection channel and the passage of each of the plurality of filter plates.

The waste sludge dewatering apparatus according to the present invention can rapidly and effectively remove foreign matter adhered to the surface of the filter plate by supplying a washing liquid to the filter plate by the washing liquid supply unit after the waste sludge dewatering process. Therefore, there is no problem that the dehydration efficiency of the waste sludge is lowered due to adhesion of foreign matter to the filter plate even after repeated use.

In addition, the waste sludge dewatering apparatus according to the present invention can quickly and effectively remove foreign matter adhering to the filter fabric by supplying the cleaning liquid to the cleaning liquid supply unit after the waste sludge dewatering process.

Also, since the disposal sludge dewatering apparatus according to the present invention can be implemented by connecting the conventional disposal sludge dewatering apparatus to the filter plate in a simple structure, it can be manufactured at low cost by using the existing disposal sludge dewatering apparatus .

1 and 2 are for explaining a conventional filter press type waste sludge dewatering apparatus.
3 is a plan view schematically illustrating a waste sludge dewatering apparatus according to an embodiment of the present invention.
4 is a side view schematically showing a waste sludge dewatering apparatus according to an embodiment of the present invention.
5 is a front view showing a filter plate of a waste sludge dewatering apparatus according to an embodiment of the present invention.
6 is a side cross-sectional view of filter plates of a waste sludge dewatering device according to an embodiment of the present invention.
7 is a view for explaining a method of dewatering waste sludge by a filter plate and a filter fabric of a waste sludge dewatering apparatus according to an embodiment of the present invention.
8 is a view for explaining the operation of the cleaning liquid supply unit of the waste sludge dewatering apparatus according to an embodiment of the present invention.

Hereinafter, a waste sludge dewatering apparatus according to the present invention will be described in detail with reference to the drawings.

FIG. 3 is a schematic plan view of a waste sludge dewatering apparatus according to an embodiment of the present invention. FIG. 4 is a side view schematically showing a waste sludge dewatering apparatus according to an embodiment of the present invention. FIG. 6 is a side cross-sectional view of filter plates of a disposal sludge dewatering apparatus according to an embodiment of the present invention. FIG. 6 is a side cross-sectional view illustrating a filter plate of a disposal sludge dewatering apparatus according to an embodiment of the present invention.

3 and 4, the waste sludge dewatering apparatus 100 according to an embodiment of the present invention includes an apparatus body 110, a plurality of filter plates (not shown) A filter plate driving unit 140 for horizontally moving the plurality of filter plates 120; a plurality of filter cloths 150 installed to face the plurality of filter plates 120; 120) for washing with a washing liquid (for example, caustic soda). The waste sludge dewatering device 100 according to the present embodiment can dewater the waste sludge to cake and remove the waste sludge as in the conventional waste sludge dewatering device. In the dewatering process of the waste sludge, 120 and the filter cloths 150 can be quickly and efficiently cleaned.

The apparatus main body 110 includes a pair of base blocks 111 and 112 arranged to be spaced apart from each other and a pair of guiders 113 each having both ends supported by a pair of base blocks 111 and 112 do. A plurality of filter plates 120 are supported on the pair of guiders 113 so as to be slidable. At one side of the apparatus main body 110, a sludge charging unit 114 for charging waste sludge is provided. The waste sludge can be introduced into the plurality of filter plates 120 through the sludge charging unit 114.

3 to 6, the plurality of filter plates 120 are installed to slide along a pair of guiders 113 of the apparatus body 110 so as to be mutually approachable or spaced apart. The plurality of filter plates 120 are connected to each other by a connecting member 130 such as a chain so that they can move in conjunction with each other. The filter plate 120 disposed on the leftmost side of the plurality of filter plates 120 is installed to face one base block 111 of the apparatus body 110, And is connected to the pressure plate 142 of the drive unit 140. These filter plates 120 are caked and removed from the waste sludge dewatered by the filter cloth 150 by moving away from each other or away from each other.

On both sides of the filter plate 120, a pair of supports 121 corresponding to a pair of guiders 113 of the apparatus main body 110 are provided. Sludge receiving grooves 122 are provided at the center of both sides of the filter plate 120. A plurality of protrusions 124 are provided in a partition wall 123 at the center of the filter plate 120 that defines a pair of sludge receiving grooves 122. A sludge inlet 125 is provided at the upper center of the filter plate 120. The sludge inlet 125 is connected to the apparatus body 110 and the sludge inlet 114 so that the waste sludge introduced into the sludge inlet 114 can move along the sludge inlet 125.

Passages 126 and 128 are respectively provided on lower and both upper and lower edges of the filter plate 120, respectively. These passages 126 and 128 form a filtrate of the waste sludge that has passed through the filter cloth 150 in the sludge receiving groove 122 and a flow path through which the washing liquid supplied from the washing liquid supply unit 170 can flow. The passage 126 provided at the lower edge of the filter plate 120 is connected to the sludge receiving groove 122 on both sides of the filter plate 120 through the connection passage 127 provided inside the lower portion of the filter plate 120 do. The passage 128 provided at the upper edge of the filter plate 120 is connected to the sludge receiving grooves 122 on both sides of the filter plate 120 through the connection passage 129 provided inside the upper portion of the filter plate 120, . These connection flow paths 127 and 129 also form a filtrate of the waste sludge that has passed through the filter cloth 150 and a flow path through which the cleaning liquid supplied from the cleaning liquid supply unit 170 can flow.

When the plurality of filter plates 120 are closely contacted with each other, the sludge receiving grooves 122 provided in the respective filter plates 120 face the sludge receiving grooves 122 of the neighboring filter plates 120, Thereby forming a space capable of accommodating the sludge. At this time, the sludge inlet 125 provided in each filter plate 120 is connected to the sludge inlet 125 of the neighboring other filter plate 120 so as to allow fluid to flow therethrough, A plurality of passages 126,128 are fluidly connected to the passages 126,128 of the neighboring filter plates 120, respectively.

Referring to FIGS. 3 and 4, the filter plate drive unit 140 is installed in the apparatus main body 110 to move the plurality of filter plates 120. The filter plate drive unit 140 includes a cylinder 141 mounted on one base block 112 of the apparatus body 110 and a pressure plate 142 moved forward and backward by the cylinder 141. The pressure plate 142 is connected to the filter plate 120 disposed outermost among the plurality of filter plates 120. The plurality of filter plates 120 are sequentially opened and closed by the action of the cylinder 141 pushing and pulling the pressure plate 142. [ That is, when the cylinder 141 pulls the pressure plate 142, the plurality of filter plates 120 are sequentially pulled by the connecting members 130 connected to the filter plates 120, and are opened to each other. On the other hand, when the cylinder 141 pushes the pressure plate 142, the filter plates 120 approach each other in the reverse order of the opening order and sequentially close between them. The filter plate drive unit 140 may be modified into various other structures that can horizontally move the plurality of filter plates 120 in order, in addition to the structure shown.

The filter cloth 150 is installed to face a pair of sludge receiving grooves 122 provided on both sides of the filter plate 120, respectively. The filter cloth 150 is supported by an upper support rod 155 provided on the upper side of the filter plate 120 and a lower support rod 156 provided below the filter plate 120. The filter cloth 150 is movable relative to the filter plate 120 by the filter fabric driving unit 160 installed on the filter plate 120.

The filter fabric driving unit 160 includes a wire 161 connected to the lower supporting rod 156 and a lifting driver 162 lifting or lowering the wire 161 to move the lower supporting rod 156 up and down. The filter fabric 150 is moved by the action of the filter unit 160 so that the filter fabric 150 is brought into contact with the scraper 165 installed on the lower side of the filter plate 120. At this time, the sludge cake sticking to the filter cloth 150 can be smoothly removed from the filter cloth 150. In addition to the structure shown, the filter bag drive unit 160 can be modified into various other structures that can move the filter fabric 150.

A more detailed structure and operation of this filter unit 160 is disclosed in the registered patent application No. 1059895 (Aug. 29, 2011), which was filed and filed by the present applicant, so that a detailed description thereof will be omitted.

The cleaning liquid supply unit 170 is provided with a plurality of filter plates 120 and a plurality of filter cloths 120 so as to remove foreign substances P such as sludge adhering to the plurality of filter plates 120 and the plurality of filter cloths 150 after the waste sludge dewatering process. A cleaning liquid is supplied to the plurality of filter cloths 150. The cleaning liquid supply unit 170 includes a cleaning liquid reservoir 171 for storing the cleaning liquid, a cleaning liquid supply pipe 172 and a cleaning liquid recovery pipe 173 connected to the cleaning liquid reservoir 171, and a cleaning liquid stored in the cleaning liquid reservoir 171 And a pump 174 for pumping. A valve 175 is provided in the middle of the cleaning liquid recovery pipe 173 to open and close the flow path inside the cleaning liquid recovery pipe 173. The valve 175 prevents the washing liquid from flowing backward through the washing liquid collecting pipe 173 or the filtrate discharged from the filter plate 120 through the washing liquid collecting pipe 173 into the washing liquid storing tank 171.

The cleaning liquid supply pipe 172 and the cleaning liquid recovery pipe 173 are connected to one filter plate 120 disposed outermost among the plurality of filter plates 120, respectively. 5, the cleaning liquid supply pipe 172 is connected to one passage 126 disposed below the filter plate 120 among a plurality of passages 126 and 128 provided in the filter plate 120 . The washing liquid recovery pipe 173 is connected to one passage 128 disposed on the upper side of the filter plate 120 among a plurality of passages 126 and 128 provided in the filter plate 120.

The pump 174 pumps the cleaning liquid stored in the cleaning liquid reservoir 171 and supplies the cleaning liquid to the filter plate 120 through the cleaning liquid supply pipe 172. The washing liquid supplied to the washing liquid supply pipe 172 flows into both sludge receiving grooves 122 of the filter plate 120 through the lower passage 126 of the filter plate 120 and the connecting flow path 127 connected thereto, The foreign matter P adhered to the partition 123 or the protrusions 124 of the plate 120 or the filter cloth 150 is washed. The washing liquid which has passed through the sludge receiving grooves 122 on both sides of the filter plate 120 passes through the upper connecting flow path 129 and the passage 128 of the filter plate 120 in order and passes through the washing liquid collecting pipe 173, (171). Thus, the cleaning liquid supply unit 170 can quickly move the plurality of filter plates 120 and the filter cloths 150 while circulating the cleaning liquid stored in the cleaning liquid storage tank 171 along the cleaning liquid supply pipe 172 and the cleaning liquid recovery pipe 173 You can wash it.

Hereinafter, the operation of the waste sludge dewatering apparatus 100 according to the present embodiment will be described.

The cylinder 141 of the filter plate driving unit 140 pushes the pressure plate 142 so that the plurality of filter plates 120 are pushed to one side of the apparatus main body 110 And is brought into close contact with the base block 111 side. At this time, as shown in FIG. 7, the plurality of filter plates 120 are in close contact with each other with the filter cloth 150 interposed therebetween. At this time, a space for forming a sludge cake is formed between the filter plate 120 and the filter plate 120 while the sludge receiving grooves 122 of the adjacent two filter plates 120 face each other. The sludge receiving grooves 122 and the passages 126 and 128 of the two filter plates 120 are interconnected. The sludge inlet 125 of the filter plate 120 disposed outermost among the plurality of filter plates 120 is connected to the sludge inlet 114 of the apparatus main body 110.

When the waste sludge is introduced through the sludge input portion 114 of the apparatus main body 110 while the plurality of filter plates 120 are in close contact with each other, the waste sludge is discharged to the sludge inlet 125 of each filter plate 120, As shown in FIG. At this time, the waste sludge passing through the sludge inlet 125 of each of the filter plates 120 passes through the sludge inlet (not shown) provided between the filter plate 120 and the filter plate 120, And enters between the two filter cloths 150 sandwiched between the plates 120. When the waste sludge flows into the space between the filter plate 120 and the filter plate 120, dehydration of the waste sludge is performed while the filtrate contained in the waste sludge passes through the filter cloth 150. Therefore, a sludge cake having a dehydrated filtrate is formed between the filter cloth 150 and the filter cloth 150 interposed between the two filter plates 120. The filtrate that has permeated the filter cloth 150 passes between the plurality of protrusions 124 provided on the partition 123 of the filter plate 120 and passes through the connection passage 127 and the passages 126 And the connection passage 129 and the passage 128 on the upper side of the filter plate 120 and is discharged to an exhaust passage (not shown) outside the filter plate 120. During the dehydration process of the waste sludge, dehydration of the waste sludge can be promoted by supplying air or water to the sludge receiving groove 122 of the filter plate 120 to compress the filter cloth 150.

After the dewatering of the waste sludge is completed, when the pressure plate 142 is moved to the original position by the cylinder 141 of the filter plate driving unit 140, the plurality of filter plates 120 are sequentially pulled in conjunction with the pressure plate 142. At this time, the filter cloths 120 are opened, and the filter cloth 150 interposed between the filter plates 120 is opened, and the sludge cake formed through the dehydration process between the filter cloths 150 is sucked by the filter cloth 150 And is removed. The sludge cake attached to the filter cloth 150 can be more smoothly moved by operating the filter fabric driving unit 160 and moving the filter cloth 150 while the adjacent two filter plates 120 are opened so that the sludge cake formed therebetween falls. Can be removed. Further, by spraying air or water to the filter cloth 150, the sludge cake can be more smoothly removed from the filter cloth 150.

Meanwhile, foreign matter such as sludge may be adhered to the partition 123, the plurality of protrusions 124, or the filter cloth 150 of the filter plate 120 during the dewatering process of the waste sludge. The foreign matter P adhered to the filter plate 120 obstructs the flow of the filtrate flowing from the sludge receiving groove 122 toward the connecting flow passages 127 and 129 during the dewatering process of the waste sludge, It will fall. Further, foreign matter such as sludge adhering to the filter cloth 150 deteriorates the dehydrating function of the filter fabric 150.

The foreign matter P adhering to the partition 123 of the filter plate 120 or the plurality of projections 124 or the filter fabric 150 can be removed by the cleaning liquid supply unit 170. [ The cleaning process by the cleaning liquid supply unit 170 also proceeds with the plurality of filter plates 120 in close contact with each other.

8, when the pump 174 of the cleaning liquid supply unit 170 is operated, the cleaning liquid stored in the cleaning liquid reservoir 171 flows out of the plurality of filter plates 120 to the outermost filter plate 172 connected to the cleaning liquid supply pipe 172 And is supplied to the lower passage 126 provided in the main body 120. The cleaning liquid supplied through the cleaning liquid supply pipe 172 flows along the passage 126 of each of the plurality of filter plates 120 and flows into the sludge receiving groove 122 through the connection passage 127 of each filter plate 120 ≪ / RTI >

The washing liquid flowing into the sludge receiving groove 122 flows toward the upper connecting flow passage 129 of the filter plate 120 through the space between the partition wall 123 of the filter plate 120 and the filter cloth 150. At this time, the cleaning liquid flows along the plurality of protrusions 124 and rinses the foreign substances P attached to the partition 123 or the protrusions 124 of the filter plate 120. A part of the washing liquid flowing into the sludge receiving groove 122 removes sludge adhered to the filter cloth 150. That is, when the washing liquid is passed through the filter cloth 150 in the direction opposite to the flow direction of the filtrate passing through the filter cloth 150 during the dewatering process, foreign materials such as sludge adhering to the filter cloth 150 can be washed away by the filter cloth 150 have.

The cleaning liquid which has washed the foreign substance P from the filter plate 120 and the filter fabric 150 sequentially passes through the connection flow path 129 and the passage 128 on the upper side of the filter plate 120, And is returned to the washing liquid reservoir 171 through the pipe 173. The washing liquid recovered in the washing liquid reservoir 171 is continuously circulated by the pump 174 to wash the plurality of filter plates 120.

When the degree of contamination of the washing liquid stored in the washing liquid reservoir 171 increases, the washing liquid in the washing liquid reservoir 171 can be replaced with a new washing liquid and then the cleaning operation can be performed. When the cleaning process by the cleaning liquid supply unit 170 is completed, the valve 175 of the cleaning liquid recovery pipe 173 is closed and the waste sludge dewatering process as described above can be re-executed.

As described above, the waste sludge dewatering apparatus 100 according to the present embodiment can remove foreign matter P adhering to the filter plate 120 and the filter cloth 150 using the cleaning liquid supply unit 170 after the waste sludge dewatering process, Can be removed quickly and effectively. The conventional disposal sludge dewatering apparatus can clean only the filter cloth after the dewatering of the disposal sludge and can not remove the foreign matter adhering to the filter plate, resulting in a problem of low dewatering efficiency of the disposal sludge after repeated use. In contrast, the waste sludge dewatering apparatus 100 according to the present embodiment is used as a drain passage for the filtrate, and is connected to the filter plate 120 through the passages 126 and 128 and the connection passages 127 and 129, The foreign matter P adhered to the filter plate 120 as well as the filter cloth 150 is smoothly removed, so that there is no problem that the dehydration efficiency of the waste sludge is lowered even after repeated use.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited to those described and illustrated above.

For example, in the figure, the cleaning liquid supply pipe 172 of the cleaning liquid supply unit 170 is connected to one of the passages 126 of the pair of passages 126 disposed below the filter plate 120, 173 are connected to one of the passages 128 among the two passages 128 disposed on the upper side of the filter plate 120 so that the washing liquid supplied to the filter plate 120 flows upwardly from the lower side, The installation positions of the cleaning liquid supply pipe 172 and the cleaning liquid recovery pipe 173 may be variously changed.

In the drawings, the cleaning liquid supply unit 170 has been shown to recover and reuse the cleaning liquid from which the filter plate 120 has been cleaned through the cleaning liquid recovery pipe 173. However, the cleaning liquid supply unit is not limited to the structure in which the cleaning liquid is not re- Structure.

The cleaning liquid supply unit 170 is connected to the filter plate 120 through the passages 126 and 128 and the connection passages 127 and 129 provided in the filter plate 120 as a discharge passage for the filtrate. However, the filter plate may be provided with a separate flow path for supplying the washing liquid.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art will appreciate that numerous modifications and variations can be made in the present invention without departing from the spirit and scope of the appended claims.

100: waste sludge dewatering device 110:
112, 113: base block 113: guider
114: sludge charging section 120: filter plate
121: Support part 122: Sludge receiving groove
123: partition wall 124: projection
125: sludge inlet 126, 128: passage
127, 129: connecting channel 130: connecting member
140: filter plate driving unit 141: cylinder
142: pressure plate 150: filter cloth
155: upper support rod 156: lower support rod
160: filter cloth driving unit 161: wire
162: lifting actuator 165: scraper
170: cleaning liquid supply unit 171: cleaning liquid storage tank
172: cleaning liquid supply pipe 173: cleaning liquid recovery pipe
174: Pump 175: Valve

Claims (5)

A plurality of filter plates having a sludge receiving groove provided at least on one surface thereof, a passage formed in a thickness direction thereof, and a connection channel connecting the sludge receiving groove and the passage,
An apparatus main body having a guider for slidably supporting the plurality of filter plates;
A filter plate driving unit installed on the apparatus body for horizontally moving the filter plates;
A plurality of filter cloths disposed on at least one surface of each of the plurality of filter plates so as to face the sludge receiving grooves so as to dehydrate the waste sludge introduced into the plurality of filter plates into a cake; And
And a cleaning liquid supply unit installed to be connected to at least one of the plurality of filter plates to supply a cleaning liquid to the sludge receiving groove through the passage and the connection passage of each of the plurality of filter plates,
Wherein each of the plurality of filter plates is provided with a pair of the passage and the connection passage so as to be spaced apart from each other with the sludge receiving groove interposed therebetween and the cleaning liquid supplied from the cleaning liquid supply unit through any one of the pair of passages, Wherein the sludge is introduced into the sludge receiving groove and passes through a filter cloth placed in the sludge receiving groove, and the washing liquid supplied to the sludge receiving groove is discharged through the other one of the passages. delete The method according to claim 1,
The cleaning liquid supply unit includes:
A cleaning liquid supply pipe connected to one of the pair of passages provided in any one of the plurality of filter fill rates for supplying the cleaning liquid and a cleaning liquid recovery pipe connected to the other passage for recovery of the cleaning liquid,
A cleaning liquid storage tank for storing the cleaning liquid and connected to the cleaning liquid supply pipe and the cleaning liquid recovery pipe,
And a pump for discharging the washing liquid stored in the washing liquid storing tank from the washing liquid storing tank through the washing liquid supplying pipe and pumping the collected washing liquid to the washing liquid storing tank through the washing liquid collecting pipe. The method according to claim 1,
Wherein a path through which the cleaning liquid is discharged from the pair of passages provided in each of the plurality of filter plates is disposed on the upper side relative to a path through which the cleaning liquid is supplied. The method according to claim 1,
Wherein the filter fluid passing through the plurality of filter cloths and flowing toward the sludge receiving grooves of each of the plurality of filter plates is discharged through the connection passage and the passage of each of the plurality of filter plates.
KR1020160019965A 2016-02-19 2016-02-19 Dehydrating apparatus of sludge KR101804350B1 (en)

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KR101804350B1 true KR101804350B1 (en) 2017-12-05

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CN112551727A (en) * 2021-02-23 2021-03-26 山东菲纳科技发展有限公司 Oil remover

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CN108939729A (en) * 2018-10-10 2018-12-07 响水县宝吉纺织有限公司 A kind of dustproof filter bag
CN111704266B (en) * 2020-06-13 2022-09-20 深圳市福田区环境技术研究所有限公司 Recycling device based on sewage treatment and sewage treatment recycling system
KR102493583B1 (en) * 2021-04-28 2023-01-31 주식회사 대한엔바이로테크 Sludge dehydrator
KR102472873B1 (en) * 2022-03-29 2022-12-01 (주)태영필트레이션시스템 Filter press dehydrator with deodorization function using filter cloth as a carrier for microorganisms that decompose odor-causing substances

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KR102086418B1 (en) 2019-11-01 2020-04-24 (주)유천엔지니어링 Camera module for anti-pollution and disposal sludge dehydration system containing this
CN112551727A (en) * 2021-02-23 2021-03-26 山东菲纳科技发展有限公司 Oil remover
CN112551727B (en) * 2021-02-23 2021-05-11 山东菲纳科技发展有限公司 Oil remover

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