CN113772904A - Device and method for removing heavy metals in municipal sludge - Google Patents
Device and method for removing heavy metals in municipal sludge Download PDFInfo
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- CN113772904A CN113772904A CN202111089331.3A CN202111089331A CN113772904A CN 113772904 A CN113772904 A CN 113772904A CN 202111089331 A CN202111089331 A CN 202111089331A CN 113772904 A CN113772904 A CN 113772904A
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- 239000010802 sludge Substances 0.000 title claims abstract description 93
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims abstract description 8
- 230000001590 oxidative effect Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 16
- 238000005868 electrolysis reaction Methods 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 150000002500 ions Chemical class 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
-
- 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
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a device and a method for removing heavy metals in municipal sludge. The method for removing heavy metals in municipal sludge comprises the following steps: t1: conveying sludge needing heavy metal removal operation into a stirring tank, then injecting clear water into the stirring tank, and stirring the sludge at the same time to ensure that the water content in the sludge reaches between ninety-five percent and ninety-eight percent, thereby forming slurry; t2: after sludge forms slurry, uniformly scattering an oxidant into the stirring tank, stirring simultaneously, and transferring the sludge into electrolytic equipment after the sludge reacts with the oxidant for one hour in the stirring tank to remove heavy metals. The device and the method for removing heavy metals in municipal sludge provided by the invention have the advantages of cleaning effect, convenience in disassembly and assembly and good heavy metal removing effect.
Description
Technical Field
The invention relates to the technical field of municipal engineering, in particular to a device and a method for removing heavy metals in municipal sludge.
Background
In China, municipal infrastructure refers to various buildings, structures, equipment and the like which are arranged in planning and construction ranges of urban areas and towns (villages) and provide paid or unpaid public products and services for residents based on government responsibilities and obligations, and various public infrastructure constructions matched with urban life belong to the municipal engineering category, such as common urban roads, bridges, subways, underground pipelines, tunnels, river channels, rail transit, sewage treatment, garbage treatment and disposal and other projects, and such as various pipelines closely related to life: rainwater, sewage, water supply, reclaimed water, electric power (parts except red lines), telecommunication, heating power, gas and the like, and construction of squares, urban greening and the like belong to the municipal engineering category.
Nowadays, sludge is generated in various municipal engineering operations, such as road engineering, sewage treatment engineering, etc., in some sludge, because the environment generated by the sludge contains some metal waste, the sludge also contains some heavy metal ions, the sludge containing the heavy metal ions can pollute the surrounding environment and further influence animals and plants living around, in the sludge treatment process, the sludge heavy metal removal operation is generally carried out by adopting an electrolysis mode, but because the heavy metal ions in the sludge are distributed unevenly, the heavy metal ions in the sludge are troublesome to remove and easy to cause poor removal effect, meanwhile, the electrode plates can adsorb the heavy metal ions in the sludge in the use process, the use of the electrode plates can be influenced after a long time, and the electrode plates can be contaminated by more sludge in the use process, and the sludge contains acidic substances, when the electrode plate is not used, the acidic substances are still attached to the surface of the electrode plate for a long time to corrode the electrode plate, thereby affecting the service life of the electrode plate.
Therefore, it is necessary to provide a device and a method for removing heavy metals from municipal sludge to solve the above technical problems.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a manufacturing method and a device for removing heavy metals in municipal sludge.
The invention provides a method for removing heavy metals in municipal sludge, which comprises the following steps:
t1: conveying sludge needing heavy metal removal operation into a stirring tank, then injecting clear water into the stirring tank, and stirring the sludge at the same time to ensure that the water content in the sludge reaches between ninety-five percent and ninety-eight percent, thereby forming slurry;
t2: after sludge forms slurry, uniformly scattering an oxidant into the stirring tank, stirring simultaneously, and transferring the sludge into electrolysis equipment after the sludge reacts with the oxidant for one hour in the stirring tank to remove heavy metals;
t3: after the sludge enters the electrolysis equipment, inserting an electrode plate into the sludge, wherein the electrode plate is provided with a plurality of hanging pieces and is powered simultaneously, heavy metals in the sludge are converted into simple substances through the electrode plate and are adsorbed on the outer walls of the hanging pieces, and the electrolysis reaction is finished after about one to two hours of reaction;
t4: and (3) carrying out multiple times of electrolysis operation of the sludge in a T3 mode, taking the electrode plate out of the electrolytic cell when the thickness of the metal simple substance on the outer wall of the hanging piece on the electrode plate is increased to one to two millimeters, and then taking down the hanging pieces from the electrode plate for recovery.
The invention also provides a device for removing heavy metals in municipal sludge, which comprises an electrolytic cell, wherein fixing frames are arranged on the outer walls of two sides of the electrolytic cell, a connecting plate is arranged above the electrolytic cell, a threaded nut is rotatably arranged on the fixing frames, a lifting screw rod is fixedly arranged at the top of the connecting plate, the top end of the lifting screw rod penetrates through the threaded nut and is in threaded connection with the threaded nut, a lifting motor is fixedly arranged at the top of the fixing frame, a plurality of electrode transverse plates are fixedly arranged at the bottom of the connecting plate, a plurality of electrode support plates are fixedly arranged at the bottoms of the electrode transverse plates, hanging pieces are arranged on the outer walls of one sides of the electrode support plates, which are far away from the electrode transverse plates, a fixing transverse plate is fixedly arranged on the fixing frames, a plurality of cleaning mechanisms are arranged on the fixing transverse plates, and a plurality of mounting mechanisms are arranged on the electrode support plates, and a plurality of the mounting mechanisms are respectively connected with a plurality of hanging pieces.
Preferably, the cleaning mechanism includes: an installation through groove, two connecting plates, a plurality of cleaning frames, an adjusting groove, an adjusting cavity, two adjusting screws and an adjusting rotating rod, the mounting through groove is arranged at the top of the fixed transverse plate, the two connecting plates are arranged in the mounting through groove, the cleaning frames are respectively and fixedly arranged on the outer wall of one side of the two connecting plates which are close to each other, the adjusting groove is arranged on the inner wall of one side of the mounting through groove, the adjusting cavity is arranged on the fixed transverse plate, the two adjusting screw rods are rotatably arranged on the inner walls of the two sides of the adjusting groove, and the ends of the two adjusting screws close to each other extend into the adjusting cavity, the threads on the two adjusting screws are arranged in reverse direction, the regulation dwang rotates to be installed on one side outer wall of fixed diaphragm, just the one end of adjusting the dwang extends to adjust the intracavity.
Preferably, the mounting mechanism comprises: the electrode support plate comprises an installation block, an embedded groove, an embedded block, two clamping grooves, an avoiding groove, a sliding plate, two clamping blocks, a fixed threaded hole and a fixed threaded rod, wherein the installation block is fixedly installed on the outer wall of one side of the electrode support plate, the embedded groove is formed in the bottom of the installation block, the embedded block is arranged in the embedded groove, the bottom of the embedded block is connected with the top of the corresponding hanging piece, the two clamping grooves are formed in the outer wall of one side of the embedded block, the avoiding groove is formed in the inner wall of one side of the embedded groove, the sliding plate is slidably installed on the inner walls of two sides of the avoiding groove, the two clamping blocks are fixedly installed on the outer wall of one side of the sliding plate, the outer walls of one side of the two clamping blocks extend into the two clamping grooves respectively and are matched with the two clamping grooves respectively, and the fixed threaded hole is formed in the outer wall of one side of the installation block, and the fixed threaded hole is communicated with the avoiding groove, the fixed threaded rod is rotatably installed on the outer wall of one side of the sliding plate, and one end of the fixed threaded rod penetrates through the fixed threaded hole and is in threaded connection with the fixed threaded hole.
Preferably, the outer wall of the threaded nut is fixedly sleeved with a first bevel gear, the rotating shaft of the lifting motor is fixedly sleeved with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.
Preferably, the regulation dwang is located the fixed cover of one end in the regulation intracavity is equipped with third taper gear, two the one end that adjusting screw is close to each other all fixes the cover and is equipped with fourth taper gear, third taper gear and two fourth taper gear meshing.
Preferably, a sliding groove is formed in the inner wall of one side of the through groove, sliding rods are fixedly mounted on the inner walls of two sides of the sliding groove, sliding blocks are fixedly mounted on the outer walls of two sides of the connecting plate, one outer wall of each sliding block extends into the corresponding adjusting groove and is in threaded connection with the corresponding adjusting screw rod, and the outer wall of one side of each sliding block extends into the corresponding sliding groove and is in sliding connection with the corresponding sliding rod.
Preferably, the fixed threaded rod is sleeved with a spring, one end of the spring is fixedly connected with the inner wall of one side of the avoidance groove, and the other end of the spring is fixedly connected with the outer wall of one side of the sliding plate.
Preferably, a plurality of cleaning brushes are arranged on the inner wall of the cleaning frame, and the inner wall of the cleaning frame is matched with the hanging piece.
Preferably, the top of the connecting plate is fixedly provided with two limiting rods, the top ends of the two limiting rods penetrate through the fixing frame and are in sliding connection with the fixing frame, and the top ends of the two limiting rods and the lifting screw rod are fixedly provided with limiting blocks
Compared with the related art, the device and the method for removing heavy metals in municipal sludge provided by the invention have the following beneficial effects:
the invention provides a device and a method for removing heavy metals in municipal sludge, which can comprehensively remove the heavy metals from the sludge in an electrolytic cell through a plurality of electrode support plates and a plurality of hanging pieces, thereby improving the effect of removing the heavy metals; the outer walls of the electrode supporting plates and the hanging pieces can be well cleaned through the installation through grooves, the connecting plates and the cleaning frames, so that sludge is reduced to be attached to the outer walls of the electrode supporting plates and the hanging pieces, corrosion to the electrode supporting plates and the hanging pieces is reduced, the service lives of the electrode supporting plates are prolonged, the distance between the two corresponding connecting plates can be adjusted through the adjusting rotating rod and the two adjusting screw rods, the distance between the corresponding cleaning frames is further adjusted, and the effect of cleaning the electrode supporting plates and the hanging pieces through the cleaning frames is guaranteed; the installation and the disassembly between the hanging piece and the electrode supporting plate can be rapidly completed through the fixed threaded rod, the fixed threaded hole, the sliding plate, the two clamping blocks, the two clamping grooves, the embedded groove and the embedded block, and the disassembly efficiency of the hanging piece is improved.
Drawings
FIG. 1 is a schematic front view of a device for removing heavy metals from municipal sludge according to a preferred embodiment of the present invention;
FIG. 2 is a schematic side view of a motor support plate in the device for removing heavy metals from municipal sludge provided by the invention;
FIG. 3 is an enlarged schematic view of portion A shown in FIG. 2;
FIG. 4 is a schematic sectional view of a part of a top view of a fixing transverse plate in the device for removing heavy metals from municipal sludge provided by the invention;
fig. 5 is an enlarged schematic view of a portion B shown in fig. 4.
Reference numbers in the figures: 1. an electrolytic cell; 2. a fixed mount; 3. a connector tile; 4. a screw nut; 5. a lifting screw; 6. a lifting motor; 7. an electrode transverse plate; 8. an electrode support plate; 9. hanging a piece; 10. fixing the transverse plate; 11. installing a through groove; 12. a connecting plate; 13. cleaning the frame; 14. an adjustment groove; 15. an adjustment chamber; 16. adjusting the screw rod; 17. a rotating rod is adjusted; 18. mounting blocks; 19. caulking grooves; 20. an insert block; 21. a card slot; 22. an avoidance groove; 23. a sliding plate; 24. a clamping block; 25. fixing the threaded hole; 26. and fixing the threaded rod.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The first embodiment is as follows:
in the embodiment, the method for removing the heavy metals in the municipal sludge comprises the following steps:
t1: conveying sludge needing heavy metal removal operation into a stirring tank, then injecting clear water into the stirring tank, and stirring the sludge at the same time to ensure that the water content in the sludge reaches between ninety-five percent and ninety-eight percent, thereby forming slurry;
t2: after sludge forms slurry, uniformly scattering an oxidant into the stirring tank, stirring simultaneously, and transferring the sludge into electrolysis equipment after the sludge reacts with the oxidant for one hour in the stirring tank to remove heavy metals;
t3: after the sludge enters the electrolysis equipment, inserting an electrode plate into the sludge, wherein the electrode plate is provided with a plurality of hanging pieces and is powered simultaneously, heavy metals in the sludge are converted into simple substances through the electrode plate and are adsorbed on the outer walls of the hanging pieces, and the electrolysis reaction is finished after about one to two hours of reaction;
t4: carrying out multiple times of electrolysis operation of the sludge in a T3 mode, taking the electrode plate out of the electrolytic cell when the thickness of a metal simple substance on the outer wall of the hanging piece on the electrode plate is increased to one to two millimeters, and then taking down the hanging pieces from the electrode plate for recycling;
example two:
referring to fig. 1 to 5, fig. 1 is a schematic front view of a device for removing heavy metals from municipal sludge according to a preferred embodiment of the present invention; FIG. 2 is a schematic side view of a motor support plate in the device for removing heavy metals from municipal sludge provided by the invention; FIG. 3 is an enlarged schematic view of portion A shown in FIG. 2; FIG. 4 is a schematic sectional view of a part of a top view of a fixing transverse plate in the device for removing heavy metals from municipal sludge provided by the invention; fig. 5 is an enlarged schematic view of a portion B shown in fig. 4. The embodiment provides a device for removing heavy metals in municipal sludge, which comprises an electrolytic cell 1, wherein fixing frames 2 are arranged on the outer walls of two sides of the electrolytic cell 1, connecting plates 3 are arranged above the electrolytic cell 1, a plurality of electrode supporting plates 8 can be arranged through the arrangement of the connecting plates 3, so that the sludge in the electrolytic cell 1 can be electrolyzed relatively comprehensively, the size of the electrolytic cell 1 is in direct proportion to the number of the electrode supporting plates 8, the sludge in the electrolytic cell 1 can be completely electrolyzed through the plurality of electrode supporting plates 8, a threaded nut 4 is rotatably arranged on the fixing frame 2, a lifting screw rod 5 is fixedly arranged at the top of the connecting plate 3, the top end of the lifting screw rod 5 penetrates through the threaded nut 4 and is in threaded connection with the threaded nut 4, and the connecting plates 3 can be driven to lift and move through the threaded connection between the lifting screw rod 5 and the threaded nut 4, thereby driving the plurality of electrode supporting plates 8 to move up and down, the top of the fixing frame 2 is fixedly provided with the lifting motor 6, the plurality of electrode supporting plates 8 are driven to move in a motor mode, the stability of movement can be ensured, the heights of the plurality of electrode supporting plates 8 can be accurately adjusted through the lifting motor 6, the bottom of the connecting plate 3 is fixedly provided with the plurality of electrode transverse plates 7, the bottoms of the plurality of electrode transverse plates 7 are fixedly provided with the plurality of electrode supporting plates 8, the outer walls of one sides of the plurality of electrode supporting plates 8 far away from the electrode transverse plates 7 are respectively provided with the hanging pieces 9, the outer walls of two sides of the electrode supporting plates 8 can be well protected through the plurality of hanging pieces 9, and metal simple substances in sludge can be adsorbed onto the hanging pieces 9 through the arrangement of the hanging pieces 9, so that the hanging pieces 9 can be quickly replaced, and the service life of the electrode supporting plates 8 can be ensured at the same time, the electrode support plate structure is characterized in that a fixing transverse plate 10 is fixedly mounted on the fixing frame 2, a plurality of cleaning mechanisms are arranged on the fixing transverse plate 10, a plurality of mounting mechanisms are arranged on the electrode support plate 8, and the mounting mechanisms are respectively connected with the plurality of hanging pieces 9.
In order to better clean the sludge on the electrode support plate 8 and the hanging piece 9, reduce the corrosion of acid substances in the sludge to the electrode support plate 8 and the hanging piece 9 and improve the service life of the electrode support plate 8, the cleaning mechanism comprises: the electrode plate cleaning device comprises an installation through groove 11, two connecting plates 12, a plurality of cleaning frames 13, an adjusting groove 14, an adjusting cavity 15, two adjusting screws 16 and an adjusting rotating rod 17, wherein the installation through groove 11 is formed in the top of a fixed transverse plate 10, the two connecting plates 12 are all arranged in the installation through groove 11, the cleaning frames 13 are respectively and fixedly installed on the outer walls of one side, close to each other, of the two connecting plates 12, the outer walls of the electrode plate 8 and the hanging piece 9 can be cleaned comprehensively through the cleaning frames 13, the cleaning effect on the electrode plate 8 and the hanging piece 9 is improved, the adjusting groove 14 is formed in the inner wall of one side of the installation through groove 11, the adjusting cavity 15 is formed in the fixed transverse plate 10, the two adjusting screws 16 are rotatably installed on the inner walls of the two sides of the adjusting groove 14, and one ends, close to each other, of the two adjusting screws 16 extend into the adjusting cavity 15, two screw thread on adjusting screw 16 is reverse setting, through two adjusting screw 16's setting, can adjust for the distance between a plurality of clearance frames 13 that correspond to make clearance frame 13 can come the clearance with better dynamics down the mud on electrode extension board 8 and lacing film 9 surface, improve the clearance effect, adjust dwang 17 and rotate and install on one side outer wall of fixed diaphragm 10, just the one end of adjusting dwang 17 extends to in adjusting chamber 15, through the setting of adjusting dwang 17, can make things convenient for operating personnel to adjust the distance between a plurality of clearance frames 13 that correspond, improve the simple operation nature.
In order to rapidly assemble and disassemble the hanging piece 9 and improve the assembly and disassembly efficiency of the hanging piece 9, the installation mechanism comprises: the electrode plate comprises an installation block 18, an embedded groove 19, an embedded block 20, two clamping grooves 21, an avoiding groove 22, a sliding plate 23, two clamping blocks 24, a fixed threaded hole 25 and a fixed threaded rod 26, wherein the installation block 18 is fixedly installed on the outer wall of one side of the electrode support plate 8, the installation mechanism can be conveniently supported and arranged through the installation block 18, the embedded groove 19 is formed in the bottom of the installation block 18, the embedded block 20 is arranged in the embedded groove 19, the bottom of the embedded block 20 is connected with the top of the corresponding hanging piece 9, the hanging piece 9 can be preliminarily fixed to one side of the electrode support plate 8 through the arrangement of the embedded groove 19 and the embedded block 20, the position of the hanging piece 9 is limited at the same time, the installation accuracy of the hanging piece 9 is guaranteed, the two clamping grooves 21 are formed in the outer wall of one side of the embedded block 20, the avoiding groove 22 is formed in the inner wall of one side of the embedded groove 19, the sliding plate 23 is slidably mounted on the inner walls of the avoiding groove 22 at both sides, the two fixture blocks 24 can be relatively stable during movement by the arrangement of the sliding plate 23, and the connection stability between the fixture blocks 24 and the mounting block 18 is ensured, both the two fixture blocks 24 are fixedly mounted on the outer wall of one side of the sliding plate 23, the outer walls of one sides of the two fixture blocks 24 respectively extend into the two clamping grooves 21 and are respectively matched with the two clamping grooves 21, the fixed threaded hole 25 is arranged on the outer wall of one side of the mounting block 18, the fixed threaded hole 25 is communicated with the avoiding groove 22, the fixed threaded rod 26 is rotatably mounted on the outer wall of one side of the sliding plate 23, one end of the fixed threaded rod 26 penetrates through the fixed threaded hole 25 and is in threaded connection with the fixed threaded hole 25, and through the arrangement of the fixed threaded rod 26 and the fixed threaded hole 25, can make things convenient for operating personnel to adjust the position of two fixture blocks 24 to accomplish the block between fixture block 24 and the draw-in groove 21, make things convenient for operating personnel to the dismouting of lacing film 9 then.
In order to enable the lifting motor 6 to drive the threaded nut 4 to rotate so as to drive the lifting screw 5 to rotate and adjust the heights of the electrode support plates 8, a first conical gear is fixedly sleeved on the outer wall of the threaded nut 4, a second conical gear is fixedly sleeved on the rotating shaft of the lifting motor 6 and is meshed with the first conical gear.
Adjust dwang 17 and can drive two adjusting screw 16 simultaneously and rotate in order to make, drive two connecting plates 12 simultaneously then and remove, adjust the distance between a plurality of clearance frames 13 that correspond, adjust dwang 17 and be located the fixed cover of one end in the regulation chamber 15 is equipped with third taper gear, two the one end that adjusting screw 16 is close to each other is all fixed the cover and is equipped with fourth taper gear, third taper gear and two fourth taper gear engagement.
In order to make adjusting screw 16 can drive corresponding connecting plate 12 and remove, guarantee simultaneously that connecting plate 12 is in the removal of horizontal direction, the sliding tray has been seted up on the one side inner wall of logical groove 11 in the installation, fixed mounting has the slide bar on the both sides inner wall of sliding tray, two equal fixed mounting has the sliding block on the both sides outer wall of connecting plate 12, wherein two one side outer wall of sliding block all extend to in adjusting tray 14 and respectively with two 16 threaded connection of adjusting screw, another one side outer wall of sliding block all extend to in the sliding tray and with slide bar sliding connection.
In order to improve the connection tightness between the clamping block 24 and the clamping groove 21, a spring is sleeved on the fixed threaded rod 26, one end of the spring is fixedly connected with the inner wall of one side of the avoiding groove 22, and the other end of the spring is fixedly connected with the outer wall of one side of the sliding plate 23.
In order to enable the cleaning frame 13 to better clean sludge on the surfaces of the electrode support plate 8 and the hanging piece 9, a plurality of cleaning brushes are arranged on the inner wall of the cleaning frame 13, and the inner wall of the cleaning frame 13 is matched with the hanging piece 9.
In order to improve the stability of being connected between linkage plate 3 and mount 2, improve this heavy metal remove device's in mud safety in utilization, linkage plate 3's top fixed mounting has two gag lever posts, two the top of gag lever post all runs through mount 2 and with 2 sliding connection of mount, two the gag lever post with the equal fixed mounting in top of lifting screw 5 has the stopper.
In this embodiment:
when the heavy metal removal operation is carried out on the sludge, the sludge slurry of the mixed water flow is conveyed into the electrolytic cell 1;
before the electrolysis operation, the hanging pieces 9 can be installed on the outer wall of the electrode support plate 8, the hanging pieces 9 are connected with the outer wall of the electrode support plate 8, the same conductivity is achieved, in the installation process, the fixed threaded rod 26 can be rotated to pull the sliding plate 23 to move, then the two clamping blocks 24 are driven to move towards the avoidance groove 22 and separate from the corresponding caulking grooves 19, then the embedding blocks 20 at the top of the hanging pieces 9 can be inserted into the caulking grooves 19, the sliding plate 23 is pushed to move by reversely rotating the fixed threaded rod 26 and the two clamping blocks 24 are pushed to move, the two clamping blocks 24 respectively enter the two clamping grooves 21, and therefore the hanging pieces 9 can be fixed on the outer wall of one side of the electrode support plate 8;
starting a lifting motor 6, driving a threaded nut 4 to rotate through a first bevel gear and a second bevel gear, enabling a lifting screw 5 to push a connecting plate 3 to descend under the action of two limiting rods, then pushing a plurality of electrode transverse plates 7, a plurality of electrode support plates 8 and a plurality of hanging pieces 9 to descend and enter an electrolytic cell 1, then conducting operation can be carried out, absorbing heavy metal ions in sludge onto the outer walls of the hanging pieces 9 in an electrolytic mode, driving the lifting screw 5 to ascend through the lifting motor 6 and the threaded nut 4 after the electrolytic operation is completed, then driving the plurality of electrode transverse plates 7, the plurality of electrode support plates 8 and the plurality of hanging pieces 9 to ascend and separate from the electrolytic cell 1, then discharging the sludge out of the electrolytic cell 1, and then completing heavy ion removal operation;
at a plurality of electrode diaphragm 7, the in-process that a plurality of electrode extension boards 8 and a plurality of lacing film 9 rise, can lead to groove 11 through a plurality of installations, can clear up the outer wall of a plurality of lacing film 9 and a plurality of electrode extension board 8 through a plurality of clearance frames 13, reduce adhering to of mud, thereby reduce the corruption of acid material to electrode extension board 8 in the mud, then guarantee electrode extension board 8's life, and can rotate and adjust dwang 17 and drive two adjusting screw 16 and rotate, can drive two corresponding connecting plates 12 through two adjusting screw 16 and remove, it removes to drive a plurality of clearance frames 13 that correspond again, can adjust the distance between a plurality of clearance frames 13 like this, then can adjust the clearance dynamics of brush to electrode extension board 8 and lacing film 9, guarantee the clearance effect to electrode extension board 8 and lacing film 9.
Compared with the prior art, the device for removing heavy metals in municipal sludge provided by the invention has the following beneficial effects:
the heavy metal removal operation can be comprehensively carried out on the sludge in the electrolytic cell 1 through the plurality of electrode support plates 8 and the plurality of hanging pieces 9, so that the heavy metal removal effect is improved;
the outer walls of the electrode support plates 8 and the hanging pieces 9 can be well cleaned through the installation through grooves 11, the connecting plates 12 and the cleaning frames 13, so that sludge is reduced to be attached to the outer walls of the electrode support plates 8 and the hanging pieces 9, corrosion to the electrode support plates 8 and the hanging pieces 9 is reduced, the service lives of the electrode support plates 8 are prolonged, the distance between the two corresponding connecting plates 12 can be adjusted through the adjusting rotating rods 17 and the two adjusting screw rods 16, the distance between the corresponding cleaning frames 13 is adjusted, and the effect of the cleaning frames 13 on the electrode support plates 8 and the hanging pieces 9 is guaranteed;
the installation and the disassembly between the hanging piece 9 and the electrode support plate 8 can be rapidly completed through the fixed threaded rod 26, the fixed threaded hole 25, the sliding plate 23, the two clamping blocks 24, the two clamping grooves 21, the embedded groove 19 and the embedded block 20, and the disassembly efficiency of the hanging piece 9 is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The method for removing heavy metals in municipal sludge is characterized by comprising the following steps:
t1: conveying sludge needing heavy metal removal operation into a stirring tank, then injecting clear water into the stirring tank, and stirring the sludge at the same time to ensure that the water content in the sludge reaches between ninety-five percent and ninety-eight percent, thereby forming slurry;
t2: after sludge forms slurry, uniformly scattering an oxidant into the stirring tank, stirring simultaneously, and transferring the sludge into electrolysis equipment after the sludge reacts with the oxidant for one hour in the stirring tank to remove heavy metals;
t3: after the sludge enters the electrolysis equipment, inserting an electrode plate into the sludge, wherein the electrode plate is provided with a plurality of hanging pieces and is powered simultaneously, heavy metals in the sludge are converted into simple substances through the electrode plate and are adsorbed on the outer walls of the hanging pieces, and the electrolysis reaction is finished after about one to two hours of reaction;
t4: and (3) carrying out multiple times of electrolysis operation of the sludge in a T3 mode, taking the electrode plate out of the electrolytic cell when the thickness of the metal simple substance on the outer wall of the hanging piece on the electrode plate is increased to one to two millimeters, and then taking down the hanging pieces from the electrode plate for recovery.
2. The device for removing heavy metals in municipal sludge is characterized by comprising an electrolytic cell, wherein fixing frames are arranged on the outer walls of two sides of the electrolytic cell, a connecting plate is arranged above the electrolytic cell, a threaded nut is rotatably arranged on each fixing frame, a lifting screw rod is fixedly arranged at the top of each connecting plate, the top end of each lifting screw rod penetrates through the threaded nut and is in threaded connection with the threaded nut, a lifting motor is fixedly arranged at the top of each fixing frame, a plurality of electrode transverse plates are fixedly arranged at the bottom of each connecting plate, a plurality of electrode support plates are fixedly arranged at the bottoms of the electrode transverse plates, hanging pieces are arranged on the outer walls of one sides, away from the electrode transverse plates, of the electrode support plates, a fixing transverse plate is fixedly arranged on each fixing frame, a plurality of cleaning mechanisms are arranged on the fixing transverse plate, and a plurality of mounting mechanisms are arranged on the electrode support plates, and a plurality of the mounting mechanisms are respectively connected with a plurality of hanging pieces.
3. The device for removing heavy metals in municipal sludge according to claim 2, wherein the cleaning mechanism comprises: an installation through groove, two connecting plates, a plurality of cleaning frames, an adjusting groove, an adjusting cavity, two adjusting screws and an adjusting rotating rod, the mounting through groove is arranged at the top of the fixed transverse plate, the two connecting plates are arranged in the mounting through groove, the cleaning frames are respectively and fixedly arranged on the outer wall of one side of the two connecting plates which are close to each other, the adjusting groove is arranged on the inner wall of one side of the mounting through groove, the adjusting cavity is arranged on the fixed transverse plate, the two adjusting screw rods are rotatably arranged on the inner walls of the two sides of the adjusting groove, and the ends of the two adjusting screws close to each other extend into the adjusting cavity, the threads on the two adjusting screws are arranged in reverse direction, the regulation dwang rotates to be installed on one side outer wall of fixed diaphragm, just the one end of adjusting the dwang extends to adjust the intracavity.
4. The municipal sludge heavy metal removal device of claim 2, wherein the mounting mechanism comprises: the electrode support plate comprises an installation block, an embedded groove, an embedded block, two clamping grooves, an avoiding groove, a sliding plate, two clamping blocks, a fixed threaded hole and a fixed threaded rod, wherein the installation block is fixedly installed on the outer wall of one side of the electrode support plate, the embedded groove is formed in the bottom of the installation block, the embedded block is arranged in the embedded groove, the bottom of the embedded block is connected with the top of the corresponding hanging piece, the two clamping grooves are formed in the outer wall of one side of the embedded block, the avoiding groove is formed in the inner wall of one side of the embedded groove, the sliding plate is slidably installed on the inner walls of two sides of the avoiding groove, the two clamping blocks are fixedly installed on the outer wall of one side of the sliding plate, the outer walls of one side of the two clamping blocks extend into the two clamping grooves respectively and are matched with the two clamping grooves respectively, and the fixed threaded hole is formed in the outer wall of one side of the installation block, and the fixed threaded hole is communicated with the avoiding groove, the fixed threaded rod is rotatably installed on the outer wall of one side of the sliding plate, and one end of the fixed threaded rod penetrates through the fixed threaded hole and is in threaded connection with the fixed threaded hole.
5. The municipal sludge heavy metal removal device according to claim 2, wherein a first bevel gear is fixedly sleeved on the outer wall of the threaded nut, a second bevel gear is fixedly sleeved on the rotating shaft of the lifting motor, and the second bevel gear is meshed with the first bevel gear.
6. The device for removing heavy metals from municipal sludge according to claim 3, wherein a third bevel gear is fixedly sleeved at one end of the adjusting rotating rod located in the adjusting cavity, fourth bevel gears are fixedly sleeved at both ends of the two adjusting screws close to each other, and the third bevel gear is meshed with the two fourth bevel gears.
7. The device for removing heavy metals from municipal sludge according to claim 3, wherein a sliding groove is formed in one side of the through groove, sliding rods are fixedly mounted on the inner walls of the two sides of the sliding groove, sliding blocks are fixedly mounted on the outer walls of the two sides of the two connecting plates, one side of the outer wall of each of the two sliding blocks extends into the adjusting groove and is in threaded connection with the two adjusting screws, and one side of the outer wall of each of the other sliding blocks extends into the sliding groove and is in sliding connection with the sliding rods.
8. The device for removing heavy metals from municipal sludge according to claim 4, wherein a spring is sleeved on the fixed threaded rod, one end of the spring is fixedly connected with the inner wall of one side of the avoidance groove, and the other end of the spring is fixedly connected with the outer wall of one side of the sliding plate.
9. The device for removing heavy metals from municipal sludge according to claim 4, wherein a plurality of cleaning brushes are arranged on the inner wall of the cleaning frame, and the inner wall of the cleaning frame is matched with the hanging pieces.
10. The device for removing heavy metals from municipal sludge according to claim 2, wherein two limiting rods are fixedly mounted at the top of the connecting plate, the top ends of the two limiting rods penetrate through the fixing frame and are slidably connected with the fixing frame, and limiting blocks are fixedly mounted at the top ends of the two limiting rods and the lifting screw.
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| CN202111089331.3A CN113772904A (en) | 2021-09-17 | 2021-09-17 | Device and method for removing heavy metals in municipal sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870317A (en) * | 2022-12-09 | 2023-03-31 | 安徽禹信环境工程科技有限公司 | Resource utilization equipment for metal-containing pollutants |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005144311A (en) * | 2003-11-14 | 2005-06-09 | Hitachi Kiden Kogyo Ltd | Sludge electrolyzer |
| CN101265007A (en) * | 2008-04-11 | 2008-09-17 | 同济大学 | Method for removing heavy metal in urban sludge by employing electric repairing technique |
| CN104386892A (en) * | 2014-11-21 | 2015-03-04 | 中国矿业大学 | Device for removing heavy metal in excess sludge by using electrodynamic force technology |
| CN105884157A (en) * | 2016-05-31 | 2016-08-24 | 浙江大学 | Method for removing and recovering heavy metal in sludge through electrolytic method |
| CN108328892A (en) * | 2018-03-08 | 2018-07-27 | 罗永山 | A kind of processing method of municipal sludge |
| CN208684491U (en) * | 2018-08-06 | 2019-04-02 | 江苏佳世达环保工程有限公司 | A kind of device for sewage treatment by electrolysis |
| CN110482809A (en) * | 2019-08-20 | 2019-11-22 | 昆明理工大学 | The method and device of electrochemically strengthening sludge concentration and simultaneous removing heavy metal |
| CN209685538U (en) * | 2019-03-14 | 2019-11-26 | 广州绿邦环境技术有限公司 | A kind of Heavy Metals in Sludge removal device |
| CN209917757U (en) * | 2019-03-15 | 2020-01-10 | 上海旷彩环保科技发展有限公司 | Industrial sludge treatment system capable of efficiently and environmentally removing heavy metals |
| CN210146492U (en) * | 2019-02-25 | 2020-03-17 | 南通新源环保有限公司 | Storage and stirring integral type sludge treatment pond |
| CN111807571A (en) * | 2020-06-16 | 2020-10-23 | 湖州梦源环保科技有限公司 | Three-dimensional pulse electrocatalytic oxidation sewage treatment equipment and method |
| CN112794623A (en) * | 2019-11-14 | 2021-05-14 | 江门市新会区江洲环保疏浚有限公司 | Sludge treatment device for removing heavy metals and dehydrating |
-
2021
- 2021-09-17 CN CN202111089331.3A patent/CN113772904A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005144311A (en) * | 2003-11-14 | 2005-06-09 | Hitachi Kiden Kogyo Ltd | Sludge electrolyzer |
| CN101265007A (en) * | 2008-04-11 | 2008-09-17 | 同济大学 | Method for removing heavy metal in urban sludge by employing electric repairing technique |
| CN104386892A (en) * | 2014-11-21 | 2015-03-04 | 中国矿业大学 | Device for removing heavy metal in excess sludge by using electrodynamic force technology |
| CN105884157A (en) * | 2016-05-31 | 2016-08-24 | 浙江大学 | Method for removing and recovering heavy metal in sludge through electrolytic method |
| CN108328892A (en) * | 2018-03-08 | 2018-07-27 | 罗永山 | A kind of processing method of municipal sludge |
| CN208684491U (en) * | 2018-08-06 | 2019-04-02 | 江苏佳世达环保工程有限公司 | A kind of device for sewage treatment by electrolysis |
| CN210146492U (en) * | 2019-02-25 | 2020-03-17 | 南通新源环保有限公司 | Storage and stirring integral type sludge treatment pond |
| CN209685538U (en) * | 2019-03-14 | 2019-11-26 | 广州绿邦环境技术有限公司 | A kind of Heavy Metals in Sludge removal device |
| CN209917757U (en) * | 2019-03-15 | 2020-01-10 | 上海旷彩环保科技发展有限公司 | Industrial sludge treatment system capable of efficiently and environmentally removing heavy metals |
| CN110482809A (en) * | 2019-08-20 | 2019-11-22 | 昆明理工大学 | The method and device of electrochemically strengthening sludge concentration and simultaneous removing heavy metal |
| CN112794623A (en) * | 2019-11-14 | 2021-05-14 | 江门市新会区江洲环保疏浚有限公司 | Sludge treatment device for removing heavy metals and dehydrating |
| CN111807571A (en) * | 2020-06-16 | 2020-10-23 | 湖州梦源环保科技有限公司 | Three-dimensional pulse electrocatalytic oxidation sewage treatment equipment and method |
Non-Patent Citations (1)
| Title |
|---|
| 王月琴 等主编: "《环境保护与污水处理技术及应用》", 文化发展出版社, pages: 225 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870317A (en) * | 2022-12-09 | 2023-03-31 | 安徽禹信环境工程科技有限公司 | Resource utilization equipment for metal-containing pollutants |
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