CN107381996B - Electroosmosis filter-pressing cooperated sludge dewatering device - Google Patents
Electroosmosis filter-pressing cooperated sludge dewatering device Download PDFInfo
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- CN107381996B CN107381996B CN201710852676.7A CN201710852676A CN107381996B CN 107381996 B CN107381996 B CN 107381996B CN 201710852676 A CN201710852676 A CN 201710852676A CN 107381996 B CN107381996 B CN 107381996B
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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
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
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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
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention relates to an electroosmosis filter-pressing cooperated sludge dewatering device, which comprises: the electroosmosis filter pressing unit is internally provided with a filter pressing chamber, after the feeding dehydration is realized in the filter pressing chamber, electroosmosis and filter pressing dehydration are performed, and along with the reduction of the water content of sludge at the anode plate side of the electroosmosis filter pressing unit, the sludge cutting mechanism starts to perform sludge cutting action at intervals; and the mud cutting mechanism is provided with mud cutting gaps on the anode plate side of the corresponding electroosmosis filter pressing unit, and cuts off a mud layer on the anode plate side of the electroosmosis filter pressing unit through the mud cutting gaps at intervals. According to the invention, the sludge to be treated is electrified, the sludge with negative charge is attracted to the anode, and the anode dry sludge layer is timely cut off, so that the resistance of the anode sludge is reduced, the current is increased, and the influence on electroosmosis dehydration is reduced.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to an electroosmosis filter pressing cooperated sludge dewatering device.
Background
The high water content of the sludge is a bottleneck which restricts the treatment of the sludge, the sludge with high water content is huge in volume, and a large amount of organic matters, heavy metals and harmful microorganisms contained in the sludge are easy to be decomposed or released into the environment, so that secondary pollution is caused, and adverse effects are caused on subsequent landfill, incineration, recycling and the like of the sludge. Therefore, the deep dehydration and reduction of the sludge is the primary aim of sludge treatment, the reduction is the basis for realizing other 'three' types of sludge, and the drier the sludge is, the more beneficial the subsequent treatment is.
The sludge contains 4 forms of water, namely free water, adsorbed water, capillary water and internal water. Although the adsorbed water, capillary water and internal water only occupy a small part of the water content of the sludge, the total content of the adsorbed water, capillary water and internal water is far beyond the quality of the dry sludge, the adsorbed water, capillary water and internal water are not easy to remove by adopting a conventional method, and the water content of the sludge is difficult to further reduce. The special floc structure of the sludge is a main factor influencing deep dehydration of the sludge, is mainly formed by wrapping suspended particles in adsorbed water by highly hydrated Extracellular Polymer (EPS), has a special double-layer structure, and has poor sedimentation performance and dehydration performance. To achieve deep dehydration of sludge, the special floc structure of the sludge must be destroyed first, bound water is released, and the surface hydrophilicity of the sludge is weakened.
Electroosmosis dewatering technology is a special electric double layer structure that utilizes the presence of sludge to effect dewatering. The sludge particles are negatively charged, and the water molecules are positively charged, and under the action of electric field force, the negatively charged sludge particles move towards the anode plate, and the positively charged water molecules move towards the cathode plate. As a novel, green and efficient solid-liquid separation technology, the electroosmosis dehydration technology has the advantages of good dehydration performance, high flexibility, no pollution, strong controllability and the like, and is widely focused in recent years, and more researchers apply the electroosmosis dehydration technology to sludge dehydration so as to achieve the purpose of deep dehydration of sludge.
Compared with the existing deep dehydration technology (heat drying, chemical conditioning and high-pressure squeezing methods, etc.), the electroosmosis dehydration technology has a series of unique advantages, and the specific expression is as follows: in the electro-osmotic dehydration process, sludge cells are electrically stimulated under the action of electrochemical reaction, electrolyzed water moves strongly in a directional way to generate brownian motion, the temperature and the pressure in the cells are increased, so that cell membranes are broken, partial water in the membranes flows out, partial water which cannot be removed by the traditional mechanical dehydration can be removed by electro-osmotic dehydration, and the water content of the sludge can be reduced to below 60% through electro-osmotic dehydration; compared with heat drying, the method has certain energy-saving advantage, and reduces the cost of sludge deep treatment drying; only the sludge is reduced and dehydrated, the properties and components of the sludge are not changed, new substances are not added, and the subsequent sludge treatment mode is not influenced; the treatment process is clean and has no secondary pollution.
The main structural form of the current electroosmosis sludge dehydrator is an electroosmosis belt type sludge dehydrator, an electroosmosis plate-frame type sludge dehydrator and an electroosmosis spiral-type sludge dehydrator. In order to discharge the water collected near the cathode, the electro-osmotic sludge dehydrator with the three structures often needs extremely large extrusion force, so that the device has huge volume, complex structure, high energy consumption and low efficiency. In order to effectively extrude the water in the sludge, the distance between the anode and the cathode is close, and once a good conductor appears in the sludge, the filter belt is easy to break down, so that frequent maintenance is required and the filter belt is replaced.
If the sludge with high water content directly enters electroosmosis, a large amount of water needs to be removed, the energy consumption of the electroosmosis is greatly improved, and the sludge is subjected to preliminary dehydration by adopting a mechanical dehydration method before the electroosmosis dehydration, so that the sludge enters the electroosmosis dehydration after the water content reaches a certain degree, and the optimal energy-saving effect is achieved.
However, electro-osmotic dewatering technology is an emerging sludge dewatering technology, and the following main problems still exist at present: 1. the final water content of the dehydrated sludge is still 50-60%, 50% is difficult to break through, and a sludge electroosmosis high-dryness dehydration technology is difficult to form; 2. in the electroosmosis process, the water content of the sludge near the anode is rapidly reduced, and cracks appear in the sludge cake and the generation of electrochemical reaction gas, so that the contact area between the sludge cake and the electrode plate is reduced, the sludge resistance is increased, the current is reduced, and the dehydration effect is deteriorated; 3. in the dehydration process, electric energy is converted into heat energy by electric current generated by an electric field, so that the temperature of the sludge is increased, and the problem of large energy consumption exists in practice; 4. the sludge moisture content of the anode layer is low due to uneven distribution of the sludge moisture content of the mud cake in the thickness direction, and water molecules accumulate on the cathode layer to cause high sludge moisture content near the cathode plate.
Disclosure of Invention
In view of the above, the invention provides an electroosmosis filter pressing cooperated sludge dewatering device which can cut off an anode sludge layer and can adjust the voltage at two ends of a polar plate according to the thickness of a mud cake in real time, aiming at the technical problems that the resistance of the anode sludge layer is increased, the current is reduced, the constant voltage gradient is difficult to maintain in the electroosmosis process, the energy consumption is higher and the dewatering effect is poorer in the prior art, so as to improve the dewatering efficiency and effect and reduce the dewatering energy consumption.
The technical proposal of the invention is to provide an electroosmosis filter-pressing cooperated sludge dewatering device with the following structure, which comprises:
the electroosmosis filter pressing unit is internally provided with a filter pressing chamber, after the feeding dehydration is realized in the filter pressing chamber, electroosmosis and filter pressing dehydration are performed, and along with the reduction of the water content of sludge at the anode plate side of the electroosmosis filter pressing unit, the sludge cutting mechanism starts to perform sludge cutting action at intervals;
and the mud cutting mechanism is provided with mud cutting gaps on the anode plate side of the corresponding electroosmosis filter pressing unit, and cuts off a mud layer on the anode plate side of the electroosmosis filter pressing unit through the mud cutting gaps at intervals.
Optionally, the electro-osmotic filter pressing unit comprises an anode plate component, a cathode plate component and a cylinder, the cylinder is arranged on a rack sliding rail of a rack, the anode plate component and the cathode plate component can be slidably arranged in the cylinder, and the filter pressing cavity is a space formed by the cylinder wall, the anode plate component and the cathode plate component; the cylinder is provided with a mud cutting gap for the mud cutting mechanism to perform mud cutting action, when mud is required to be cut, the mud cutting gap is arranged in the filter pressing chamber by moving the cylinder and is close to the anode plate component, and in a non-mud cutting state, the mud cutting gap is separated from the filter pressing chamber by moving the cylinder.
Optionally, the electro-osmotic filter pressing unit further comprises a connecting plate, the connecting plate is also installed on a rack sliding rail of the rack, and the cathode plate assembly is fixedly connected with the connecting plate through a polar plate pushing column; the anode plate component is also connected with an anode plate pushing column, and the pushing rod is driven under the action of the power piece to extrude the filter pressing cavity.
Optionally, the anode plate component comprises an anode plate and an anode cover plate, the anode plate is arranged on the anode cover plate, sealing installation is realized through a sealing ring, and a mud inlet pipe penetrates through the anode plate and the anode cover plate so that mud can enter the filter pressing chamber; the negative plate assembly comprises a negative plate cover plate, a negative pressure ring, a water outlet pipe and filter cloth, wherein the negative plate is arranged on the negative plate, the filter cloth is covered on the negative plate, the negative pressure ring compresses the filter cloth on the negative plate, sealing rings are arranged on the negative plate and the negative plate, a plurality of protruding points are arranged on the negative plate for sealing, gaps are arranged between the protruding points, moisture passes through the filter cloth and the positive plate, and then flows to the water outlet pipe from the gaps on the negative plate.
Optionally, the voltage between the anode plate component and the cathode plate component of the electroosmosis filter pressing unit is adjusted according to the thickness of the mud cake in the filter pressing cavity, so that the voltage of the mud cake in unit distance is constant.
Optionally, the electro-osmotic pressure filtration unit further comprises an orthogonal sliding connecting rod mechanism, at least one end of the orthogonal sliding connecting rod mechanism is connected to the cylinder body, one end of the orthogonal sliding connecting rod mechanism is connected to the connecting plate, and the relative position of the cylinder body and the pressure filtration chamber is adjusted through the movement of the driving end of the orthogonal sliding connecting rod mechanism.
Optionally, the orthogonal sliding link mechanism include vertical connecting rod, horizontal connecting rod, connecting rod base, oblique connecting rod and vertical sliding ring, wherein connecting rod base fixed mounting is on barrel and connecting plate journal stirrup, the journal stirrup passes through spout and frame sliding connection, vertical sliding ring cover is on vertical connecting rod, vertical connecting rod and link mechanism slide rail synchronous up-and-down movement drive horizontal connecting rod and rotate, and then change the distance between barrel and the connecting plate and push away mud cake to the mud slit department that cuts, oblique connecting rod vertical sliding ring connect, provide the effort of horizontal direction for vertical connecting rod, make it can vertically horizontal slip in the filter-pressing process.
Optionally, cut mud mechanism include the push rod support, cut mud push rod and push away the mud push rod, the one end of push rod support install on the barrel, cut mud push rod and push away the mud push rod and slide on the push rod support in order to realize cutting mud and pushing away mud, the equal sliding connection of mud push rod that cuts of a plurality of mud mechanisms cuts on the mud rod slide rail that cuts of frame, the equal sliding connection of mud push rod that pushes away of a plurality of mud mechanisms pushes away on the mud rod slide rail that pushes away of frame.
Optionally, the electroosmosis filter pressing unit further comprises a constant voltage gradient control system, the constant voltage gradient control system comprises a displacement sensor and a power supply voltage adjusting module, the displacement sensor detects the thickness of the mud cake and feeds back a detected mud cake thickness signal to the power supply voltage adjusting module so as to adjust the voltage between the cathode plate component and the anode plate component, and constant voltage gradient electroosmosis dehydration is achieved.
Optionally, a barrier strip for blocking the anode plate component is arranged on one side of the cylinder body close to the anode plate component, the displacement sensor detects the distance from the anode plate component to the barrier strip and the distance from the cathode plate component to the barrier strip in real time, indirectly measures the real-time thickness of the mud cake, transmits a thickness signal to the controller, processes the thickness signal to the power supply voltage regulating module through the controller to send a signal to change the reference voltage, and regulates the voltage at two ends of the mud cake in real time so that the voltage gradient on the mud cake is constant.
With the structure, the invention has the following advantages: when the energy-saving electro-osmotic sludge high-dry dehydration system is used for electro-osmotic dehydration, the sludge with negative charges is attracted to the anode by electrifying the sludge to be treated, and the anode dry sludge layer is timely cut off, so that the resistance of the anode sludge is reduced, the current is increased, and the influence on electro-osmotic dehydration is reduced. In the whole process, electroosmosis dehydration is carried out by adopting a constant voltage gradient mode, so that the energy consumption is further reduced, and the dehydration effect and efficiency are improved.
Drawings
FIG. 1 is a schematic diagram of the electroosmosis filter-pressing cooperated sludge dewatering device;
FIG. 2 is a front view of the electro-osmotic pressure filtration and sludge dewatering device of the invention;
FIG. 3 is an isometric view of an electroosmotic pressure filtration co-sludge dewatering device of the present invention;
FIG. 4 is a schematic view of the structure of a cathode cover plate;
FIG. 5 is a schematic structural view of a cathode plate;
FIG. 6 is a schematic diagram of an assembled structure of a plurality of electro-osmotic pressure filtration and sludge dewatering devices;
FIG. 7 is a front view of a plurality of electro-osmotic pressure filtration co-operative sludge dewatering devices;
fig. 8 is a schematic diagram of the structure of the filtrate tank.
As shown in the figure: 1. the mud pushing cylinder, 2, the mud cutting cylinder, 3, the cylinder body sliding cylinder, 4, the head plate, 5, the mud pushing rod sliding rail, 6, the extrusion cylinder, 7, the link mechanism sliding rail, 8, the mud pushing rod, 9, the mud cutting pushing rod, 10, the push rod bracket, 11, the connecting plate, 12, the orthogonal sliding link mechanism, 12-1, the vertical link, 12-2, the horizontal link, 12-3, the link base, 12-4, the inclined link, 12-5, the vertical sliding ring, 13, the mud cutting rod sliding rail, 14, the tail plate, 15, the support lug, 16, the control bus, 17, the power line, 18 and the cylinder body, 19, a chute, 20, a polar plate pushing column, 21, a displacement sensor, 22, a filter cloth cleaning water spray pipe, 23, an anode plate limiting cylinder, 24, a rack sliding rail, 25, a controller, 26, an anode plate component, 26-1, an anode cover plate, 26-2, an anode plate, 26-3, a mud inlet pipe, 27, a cathode plate component, 27-1, a cathode cover plate, 27-2, a cathode plate, 27-3, a cathode compression ring, 28, a barrier strip, 29, a filtrate buffer tank, 30, a water suction pump, 31, a pneumatic ball valve, 32, a filtrate buffer tank water inlet, 33 and a filtrate buffer tank water outlet.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the following description of preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will be fully understood to those skilled in the art without such details. Furthermore, the drawings of the present invention are not necessarily to scale, nor are they necessarily drawn to scale.
The basic solution of the invention is an electroosmosis filter-pressing cooperated sludge dewatering device, comprising:
the electroosmosis filter pressing unit is internally provided with a filter pressing chamber, after the feeding dehydration is realized in the filter pressing chamber, electroosmosis and filter pressing dehydration are performed, and along with the reduction of the water content of sludge at the anode plate side of the electroosmosis filter pressing unit, the sludge cutting mechanism starts to perform sludge cutting action at intervals;
and the mud cutting mechanism is provided with mud cutting gaps on the anode plate side of the corresponding electroosmosis filter pressing unit, and cuts off a mud layer on the anode plate side of the electroosmosis filter pressing unit through the mud cutting gaps at intervals.
Although the single electro-osmotic pressure filtration and sludge dewatering device can complete electro-osmotic dewatering operation, a plurality of electro-osmotic pressure filtration and sludge dewatering devices are arranged on a frame to form a whole group of dewatering systems, and efficiency is further improved and synergetic advantages are reflected through synchronous operation and control.
Specific technical details are set forth further in connection with the accompanying drawings.
As shown in the figure, the electro-osmotic filter-pressing unit comprises an anode plate assembly 26, a cathode plate assembly 27 and a cylinder 18, wherein the cylinder 18 is arranged on a rack sliding rail 24 of a rack, the anode plate assembly 26 and the cathode plate assembly 27 can be slidably arranged in the cylinder 18, and the filter-pressing chamber is a space formed by the cylinder wall, the anode plate assembly 26 and the cathode plate assembly 27; the cylinder 18 is provided with a mud cutting gap for the mud cutting mechanism to perform mud cutting action, when mud is required to be cut, the mud cutting gap is arranged in the filter pressing chamber by moving the cylinder 18 and is close to the anode plate assembly 26, and in a non-mud cutting state, the cylinder 18 is moved to enable the mud cutting gap to leave the filter pressing chamber.
The electroosmosis filter pressing unit further comprises a connecting plate 11, wherein the connecting plate 11 is also arranged on a rack sliding rail 24 of a rack, and the cathode plate assembly 27 is fixedly connected with the connecting plate 11 through a polar plate pushing column 20; the anode plate assembly 26 is also connected with a pole plate pushing pole 20, and the pole plate pushing pole 20 is driven by the power piece to press the filter pressing cavity.
The mud cutting mechanism comprises a push rod support 10, a mud cutting push rod 9 and a mud pushing push rod 8, one end of the push rod support 10 is installed on a cylinder 18, the mud cutting push rod 9 and the mud pushing push rod 8 slide on the push rod support 10 to cut mud and push mud, the mud cutting push rods 9 of a plurality of mud cutting mechanisms are all slidably connected to the mud cutting rod sliding rail 13 of the frame, and the mud pushing push rods 8 of a plurality of mud cutting mechanisms are all slidably connected to the mud pushing rod sliding rail 5 of the frame.
The power part mainly comprises a mud pushing cylinder 1, a mud cutting cylinder 2, a cylinder body sliding cylinder 3 and an extrusion cylinder 6, wherein the mud pushing cylinder 1 controls a mud pushing rod sliding rail 5 to ascend and descend so as to drive a mud pushing rod 8 to ascend and descend, and the mud cutting cylinder 2 controls a mud cutting rod sliding rail 13 to ascend and descend so as to drive a mud pushing rod 9 to ascend and descend. In addition, the anode plate assembly is limited by an anode plate limiting cylinder 23, the anode plate limiting cylinder 23 is arranged at the mud cutting gap of the lower half part of the cylinder body 18, the front and the rear parts are respectively customized according to the width of the gap, and a piston column of the anode plate limiting cylinder 23 extends out of the gap to clamp the anode plate assembly 26 in the mud feeding process. The mud cutting steel wire and the mud pushing strip are lowered to the upper side of the mud feeding pipe, so that the anode piston plate cannot slide to the left of a mud cutting seam, and can be used for limiting cooperatively. The cylinder sliding cylinder 3 can adopt servo motion, which mainly controls the relative distance between the cylinder 18 and the connecting plate 11, and enables the cylinder sliding cylinder 3 to ascend a certain distance according to the distance measured by the displacement sensor 21 of the anode plate assembly 26, namely the slide rail 7 of the link mechanism and the vertical link 12-1 ascend a certain distance, the horizontal link 12-2 inclines the cylinder 18 to slide on the connecting plate 11, and the anode dry mud layer is exposed at the mud cutting seam.
The electro-osmotic pressure filtration unit also comprises an orthogonal sliding connecting rod mechanism, at least one end of the orthogonal sliding connecting rod mechanism is connected to the cylinder 18, one end of the orthogonal sliding connecting rod mechanism is connected to the connecting plate 11, and the relative position of the cylinder 18 and the pressure filtration chamber is adjusted through the movement of the driving end of the orthogonal sliding connecting rod mechanism. The orthogonal sliding link mechanism 12 comprises a vertical link 12-1, a horizontal link 12-2, a link base 12-3, an inclined link 12-4 and a vertical slip ring 12-5, wherein the link base 12-3 is fixedly arranged on a cylinder 18 and a support lug 15 of an intermediate connecting plate 11, the support lug 15 is connected with a rack sliding rail 24 through a sliding groove 19, the vertical slip ring 12-5 is sleeved on the vertical link 12-1, the vertical link 12-1 and the link mechanism sliding rail 7 synchronously move up and down to drive the horizontal link 12-2 to rotate, the distance between the cylinder 18 and the intermediate connecting plate 11 is changed, namely mud cakes are pushed to mud cutting joints, and the inclined link 12-4 is connected with the vertical slip ring 12-5 to provide acting force in the horizontal direction for the vertical link 12-1, so that the vertical link 12-1 can vertically and horizontally slide in the filter pressing process.
A head plate 4 is arranged before the electroosmosis filter pressing units, a tail plate 14 is arranged after the electroosmosis filter pressing units, the extrusion oil cylinder 6 is arranged on the head plate 4, and the tail plate 14 butts against a connecting plate of the last stage of electroosmosis filter pressing unit.
The electroosmosis filter pressing unit further comprises a constant voltage gradient control system, the constant voltage gradient control system comprises a displacement sensor 21 and a power supply voltage adjusting module, the displacement sensor 21 detects the thickness of the mud cake and feeds back a detected mud cake thickness signal to the power supply voltage adjusting module so as to adjust the voltage between the cathode plate assembly 27 and the anode plate assembly 26, and constant voltage gradient electroosmosis dehydration is achieved. The power supply voltage adjusting module can be arranged in the controller 25 or can be arranged separately, and the power supply supplies power 27 to the anode plate assembly 26 and the cathode plate assembly through the power line 17 by the controller 25, and controls the power supply voltage of the power supply 27 to the anode plate assembly 26 and the cathode plate assembly through the control bus 16.
The displacement sensor 21 detects the distance from the anode plate component 26 to the barrier strip 28 and the distance from the cathode plate component 27 to the barrier strip 28 in real time, indirectly detects the real-time thickness of the mud cake, transmits a thickness signal to the controller 25, processes the thickness signal by the controller 25, transmits a signal to the power supply voltage regulating module to change the reference voltage, and regulates the voltages at two ends of the mud cake in real time so that the voltage gradient on the mud cake is constant.
The barrel 18 on install push rod support 10, cut mud push rod 9 and push away mud push rod 8 and install on push rod support 10, can independently slide from top to bottom, and cut mud push rod 9 is always under push away mud push rod 8, anode plate subassembly 26 and negative plate subassembly 27 freely slide at barrel 18, but it can not slide away from the barrel under the restriction of blend stop 28. A groove penetrating the cylinder 18 is arranged right below the pushing bar of the mud pushing rod 8, the groove is used for exposing the anode dry mud layer outside the cylinder and then cutting off, the filtrate buffer tank 29 buffers a tank of the filter-pressed liquid as a water source for cleaning the filter cloth, the water suction pump 30 pumps the filter liquor out to spray the filter cloth through the filter cloth cleaning spray pipe 22, and the filter cloth moves along with the sliding of the cathode plate assembly 27, so that the spraying point moves from the center of the filter cloth to the outside for a circle. The filtrate buffer tank 29 is provided for collecting filtered water, a plurality of filter cloth cleaning spray pipes 22 are obliquely arranged on the circumference of the cylinder 18, and the water pump 30 pumps out the water in the filtrate buffer tank 29 and cleans the filter cloth through the filter cloth cleaning spray pipes 22. The filtrate buffer tank 29, the water suction pump 30, the pneumatic ball valve 31, the filtrate buffer tank water inlet 32 and the filtrate buffer tank water outlet 33 form a filtrate buffer unit, and a water source is provided for cleaning the filter cloth. The filtrate buffer tank water inlet 32 is lower than the cathode plate assembly water outlet pipe, and in the electro-osmotic pressure filtration process, filtrate flows into the filtrate buffer tank 29 under the action of gravity until the tank is full of liquid, and the filtrate is automatically discharged from the filtrate buffer tank water outlet 33.
The mud cutting push rod 9 comprises two steel wires at the bottom, sliding strips at the two sides and a pressing plate at the top, a slip ring above the pressing plate is used for being connected with a mud cutting rod sliding rail, a hollow push strip for pushing the mud push rod passes through the middle of the pressing plate, the mud pushing rod 8 comprises a push strip at the bottom, sliding strips at the two sides and a pressing strip at the top, and the mud cutting push rod 9 is always positioned below the mud pushing rod 8.
One of the key components for realizing electroosmosis is that the electrode plate comprises an anode plate assembly 26 and a cathode plate assembly 27, the anode plate 26-2 is arranged on the anode cover plate 26-1, sealing installation is realized through a sealing ring, and a mud inlet pipe 26-3 penetrates through the anode plate 26-2 and the anode cover plate 26-1 so that mud can enter an electroosmosis chamber. The cathode plate 27-1, the cathode plate 27-2, the cathode pressing ring 27-3, the water outlet pipe, the filter cloth and the sealing ring form a cathode plate assembly 27, wherein the cathode plate 27-2 is arranged on the cathode plate 27-1, the filter cloth covers the cathode plate 27-2, the cathode pressing ring 27-3 presses the filter cloth on the cathode plate 27-2, the sealing rings are arranged on the cathode plate 27-1 and the cathode plate 27-2 to play a sealing role, a plurality of protruding points are arranged on the cathode plate 27-1, gaps are arranged between the protruding points, moisture passes through the filter cloth and the anode plate during electroosmosis, and then flows to the water outlet pipe from the gaps on the cathode plate 27-1.
The frame is provided with a head plate 4, a tail plate 14, a frame sliding rail 24, a mud pushing rod sliding rail 5, a mud cutting rod sliding rail 13 and a connecting rod mechanism sliding rail 7, a sliding groove 19 is arranged on a supporting lug 15 arranged on a cylinder 18, and the sliding groove 19 is tightly matched with the frame sliding rail 24, so that the filter pressing unit stably slides on the guide rail and cannot incline. The mud cutting push rod 9, the mud pushing push rod 8 and the orthogonal sliding link mechanism 12 slide on corresponding sliding rails in the whole device operation process.
The working principle of the device is as follows:
the initial state is that the volume of all the cavities reaches the minimum, the anode plate component is tightly attached to the polar plate barrier strip, the horizontal connecting rod in the orthogonal sliding connecting rod mechanism is in a horizontal state, at this time, the controller sends a corresponding instruction, the mud cutting push rod and the mud pushing push rod descend to the upper side of the mud feeding pipe, the push strip on the mud cutting push rod can block the anode plate component to slide leftwards, meanwhile, the anode plate limiting cylinder acts, and the anode plate is matched with the push strip to ensure that the anode plate cannot slide through mud cutting seams through the stress of three points. When mud pushes the electroosmosis cavity to the maximum, the anode assembly plate clings to the push bar and the piston rod of the anode plate limiting cylinder, the pressure to which the mud is subjected is between 1.5 and 2.0MPa under the action of continuous feeding pressure, the mud is continuously pumped in, water enters a water outlet gap on the cathode cover plate through the filter cloth and the cathode plate, flows into the filtrate buffer tank from the water outlet pipe, the mud is remained in the electroosmosis filter pressing cavity, the electroosmosis filter pressing cavity is filled after a period of feeding dehydration, the mud cannot enter, the mud is stopped to enter, and preliminary dehydration is realized.
The squeeze cylinders then begin to provide pressure to the press filtration chamber, i.e., force through the plate push posts. The power module is used for supplying power to the cathode and anode plates, starting to electroosmosis filter-press dehydration of the sludge, wherein the thickness of a mud cake can be continuously changed in the process, indirectly measuring the thickness of the sludge in real time through the displacement sensor, then regulating the voltage on the cathode and anode plates in each cavity by the controller, so that the voltage gradient on the mud cake in the whole electroosmosis process is constant, the anode sludge layer becomes extremely higher than the dry resistance after a certain time of electroosmosis filter-press, and at the moment, in order to keep the electroosmosis efficiency and save electric energy, the mud cutting mechanism starts to work.
Before the mud cutting mechanism acts, the dry mud layer needs to be moved to the mud cutting gap, the controller sends out an instruction to retract the piston of the anode plate limiting cylinder, and the mud cutting push rod and the mud pushing push rod return to the initial state, generally rise to the highest point. After the actions are completed, the cylinder body sliding oil cylinder acts, the distance from the anode plate component to the barrier strip is measured according to the displacement sensor, the distance that the connecting rod mechanism sliding rail needs to ascend is determined, the connecting rod mechanism sliding rail is lifted under the action of the cylinder body sliding oil cylinder, the corresponding cylinder body moves towards the right connecting plate, the anode dry mud layer is exposed to the mud cutting gap on the cylinder body, the mud cutting cylinder drives the mud cutting rod sliding rail to move downwards, the mud cutting push rod slides to the lowest position, the dry mud layer is separated from the whole mud cake, then the mud pushing cylinder drives the mud pushing rod sliding rail to move downwards, the mud pushing rod slides to the lowest position, the dry mud layer is pushed out of the cylinder body, partial mud unloading is realized at the same time when the dry mud layer is cut, the cylinder sliding oil cylinder drives the connecting rod mechanism sliding rail to move downwards, the orthogonal sliding connecting rod mechanism is restored to an initial state, namely the horizontal connecting rod keeps horizontal, and the chamber is closed again.
And repeating the actions after the mud is fed again after the chamber is closed, wherein the action of releasing the sliding of the anode piston plate is not required to be repeated, namely, electroosmosis filter pressing, mud cutting and electroosmosis filter pressing … are carried out until all mud in the chamber is cut off, and one electroosmosis filter pressing period is finished.
After a plurality of electroosmosis filter pressing cycle, start to wash the filter cloth, open pneumatic ball valve and suction pump, the water in the filtrate buffer tank is taken out and is flowed to filter cloth washing spray pipe, spray the filter cloth through the slope pore on the barrel on, stop the gliding mechanism action of anode plate this moment, the push rod of pushing away mud push rod is hugged closely to the anode plate, barrel slip hydro-cylinder reciprocates for the negative plate subassembly is the left and right sides slip that is continuous in the barrel, the water that sprays out in the pore just can wash whole filter cloth like this, the water column sprays the removal that the drop point is continuous from filter cloth central authorities to all around.
Although the embodiments have been described and illustrated separately above, and with respect to a partially common technique, it will be apparent to those skilled in the art that alternate and integration may be made between embodiments, with reference to one embodiment not explicitly described, and reference may be made to another embodiment described.
The foregoing is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. In general, all changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (4)
1. An electroosmosis filter-pressing cooperated sludge dewatering device, comprising:
the electroosmosis filter pressing unit is internally provided with a filter pressing chamber, after the feeding dehydration is realized in the filter pressing chamber, electroosmosis and filter pressing dehydration are performed, and along with the reduction of the water content of sludge at the anode plate side of the electroosmosis filter pressing unit, the sludge cutting mechanism starts to perform sludge cutting action at intervals;
the mud cutting mechanism is provided with mud cutting gaps on the anode plate side of the corresponding electroosmosis filter pressing unit, and cuts off a mud layer on the anode plate side of the electroosmosis filter pressing unit through the mud cutting gaps at intervals;
the electroosmosis filter pressing unit comprises an anode plate assembly (26), a cathode plate assembly (27) and a cylinder body (18), wherein the cylinder body (18) is arranged on a rack sliding rail (24) of a rack, the anode plate assembly (26) and the cathode plate assembly (27) are slidably arranged in the cylinder body (18), and the filter pressing cavity is a space formed by the cylinder body wall, the anode plate assembly (26) and the cathode plate assembly (27); a mud cutting gap for a mud cutting mechanism to perform mud cutting action is formed in the cylinder (18), when mud is required to be cut, the mud cutting gap is placed in the filter pressing chamber by moving the cylinder (18) and is close to the anode plate component (26), and in a non-mud cutting state, the mud cutting gap is separated from the filter pressing chamber by moving the cylinder (18);
the electroosmosis filter pressing unit further comprises a connecting plate (11), the connecting plate (11) is also arranged on a rack sliding rail (24) of the rack, and the cathode plate assembly (27) is fixedly connected with the connecting plate (11) through a polar plate pushing column (20); the anode plate component (26) is also connected with a pole plate pushing column (20), and the pole plate pushing column (20) is driven under the action of the power piece to extrude the filter pressing cavity;
adjusting the voltage between the anode plate assembly (26) and the cathode plate assembly (27) of the electro-osmotic pressure filtration unit according to the thickness of the mud cake in the pressure filtration chamber, so that the voltage per unit distance of the mud cake is constant;
the electro-osmotic pressure filtration unit also comprises an orthogonal sliding connecting rod mechanism, at least one end of the orthogonal sliding connecting rod mechanism is connected to the cylinder body (18), one end of the orthogonal sliding connecting rod mechanism is connected to the connecting plate (11), and the relative position of the cylinder body (18) and the pressure filtration chamber is adjusted through the movement of the driving end of the orthogonal sliding connecting rod mechanism;
the orthogonal sliding connecting rod mechanism (12) comprises a vertical connecting rod (12-1), a horizontal connecting rod (12-2), a connecting rod base (12-3), an inclined connecting rod (12-4) and a vertical sliding ring (12-5), wherein the connecting rod base (12-3) is fixedly arranged on a cylinder body (18) and a supporting lug (15) of the connecting plate (11), the supporting lug (15) is connected with a rack sliding rail (24) through a sliding groove (19), the vertical sliding ring (12-5) is sleeved on the vertical connecting rod (12-1), the vertical connecting rod (12-1) and the connecting rod mechanism sliding rail (7) synchronously move up and down to drive the horizontal connecting rod (12-2) to rotate, the distance between the cylinder body (18) and the connecting plate (11) is changed, namely mud cakes are pushed to mud cutting joints, and the inclined connecting rod (12-4) is connected with the vertical sliding ring (12-5) to provide horizontal acting force for the vertical connecting rod (12-1), so that the vertical sliding rod can vertically slide horizontally in the process;
the electroosmosis filter pressing unit further comprises a constant voltage gradient control system, the constant voltage gradient control system comprises a displacement sensor (21) and a power supply voltage adjusting module, the displacement sensor (21) detects the thickness of the mud cake and feeds back a detected mud cake thickness signal to the power supply voltage adjusting module so as to adjust the voltage between the cathode plate component (27) and the anode plate component (26) and realize constant voltage gradient electroosmosis dehydration.
2. The electro-osmotic pressure filtration cooperated sludge dewatering device according to claim 1, wherein: the anode plate assembly (26) comprises an anode plate (26-2) and an anode cover plate (26-1), the anode plate (26-2) is arranged on the anode cover plate (26-1), sealing installation is realized through a sealing ring, and a mud inlet pipe (26-3) penetrates through the anode plate (26-2) and the anode cover plate (26-1) so that mud can enter a filter pressing chamber; the negative plate assembly (27) comprises a negative plate cover plate (27-1), a negative plate (27-2), a negative pressure ring (27-3), a water outlet pipe and filter cloth, wherein the negative plate (27-2) is arranged on the negative plate cover plate (27-1), the filter cloth is covered on the negative plate (27-2), the filter cloth is tightly pressed on the negative plate (27-2) by the negative pressure ring (27-3), sealing rings are arranged on the negative plate cover plate (27-1) and the negative plate (27-2) to play a role in sealing, a plurality of protruding points are arranged on the negative plate cover plate (27-1), gaps are arranged between the protruding points, water passes through the filter cloth and the positive plate, and then flows to the water outlet pipe from the gaps on the negative plate cover plate (27-1).
3. The electro-osmotic pressure filtration cooperated sludge dewatering device according to claim 1, wherein: the mud cutting mechanism comprises a push rod support (10), a mud cutting push rod (9) and a mud pushing push rod (8), one end of the push rod support (10) is installed on the cylinder body (18), the mud cutting push rod (9) and the mud pushing push rod (8) slide on the push rod support (10) to cut mud and push mud, the mud cutting push rods (9) of a plurality of mud cutting mechanisms are all slidably connected to the mud cutting rod sliding rail (13) of the frame, and the mud pushing push rods (8) of a plurality of mud cutting mechanisms are all slidably connected to the mud pushing rod sliding rail (5) of the frame.
4. The electro-osmotic pressure filtration co-sludge dewatering device according to claim 2 or 3, wherein: the device is characterized in that a barrier strip (28) for blocking the anode plate component (26) is arranged on one side of the barrel (18) close to the anode plate component (26), the displacement sensor (21) detects the distance from the anode plate component (26) to the barrier strip (28) and the distance from the cathode plate component (27) to the barrier strip (28) in real time, the real-time thickness of a mud cake is indirectly measured, a thickness signal is transmitted to the controller (25), the controller (25) processes the thickness signal and transmits the signal to the power supply voltage regulation module to change the reference voltage, and the voltage at two ends of the mud cake is regulated in real time so that the voltage gradient on the mud cake is constant.
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| CN115259627B (en) * | 2022-07-29 | 2023-10-20 | 山东祥龙新材料股份有限公司 | Sludge dewatering treatment device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201737821U (en) * | 2010-07-20 | 2011-02-09 | 浙江大学 | Mobile electrode type electroosmosis dehydration device for dehydration of urban sewage sludge |
| CN104163557A (en) * | 2014-08-12 | 2014-11-26 | 嘉兴学院 | Layer-by-layer electroosmosis method and device for dewatering energy-containing sludge |
| CN104587717A (en) * | 2015-01-27 | 2015-05-06 | 扬州荣恒机械制造有限公司 | Ultra-dry filtering machine and filtrating method thereof |
| JP2015147193A (en) * | 2014-02-07 | 2015-08-20 | 栗田工業株式会社 | Electro-osmotic dehydrator and method of operating the same |
| CN105923952A (en) * | 2016-06-21 | 2016-09-07 | 饶宾期 | Electric osmosis filter pressing based sewage sludge co-dehydration device |
| CN106865944A (en) * | 2017-02-23 | 2017-06-20 | 北京海斯顿水处理设备有限公司 | A kind of vacuum electric permeates sludge drying device and its method |
| CN107042027A (en) * | 2017-05-15 | 2017-08-15 | 广州铭远机械设备有限公司 | A kind of mud-scraping apparatus in sewage disposal device |
-
2017
- 2017-09-19 CN CN201710852676.7A patent/CN107381996B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201737821U (en) * | 2010-07-20 | 2011-02-09 | 浙江大学 | Mobile electrode type electroosmosis dehydration device for dehydration of urban sewage sludge |
| JP2015147193A (en) * | 2014-02-07 | 2015-08-20 | 栗田工業株式会社 | Electro-osmotic dehydrator and method of operating the same |
| CN104163557A (en) * | 2014-08-12 | 2014-11-26 | 嘉兴学院 | Layer-by-layer electroosmosis method and device for dewatering energy-containing sludge |
| CN104587717A (en) * | 2015-01-27 | 2015-05-06 | 扬州荣恒机械制造有限公司 | Ultra-dry filtering machine and filtrating method thereof |
| CN105923952A (en) * | 2016-06-21 | 2016-09-07 | 饶宾期 | Electric osmosis filter pressing based sewage sludge co-dehydration device |
| CN106865944A (en) * | 2017-02-23 | 2017-06-20 | 北京海斯顿水处理设备有限公司 | A kind of vacuum electric permeates sludge drying device and its method |
| CN107042027A (en) * | 2017-05-15 | 2017-08-15 | 广州铭远机械设备有限公司 | A kind of mud-scraping apparatus in sewage disposal device |
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Denomination of invention: Electroosmotic pressure filtration synergistic sludge dewatering device Effective date of registration: 20230918 Granted publication date: 20230526 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Shanghai pilot Free Trade Zone Lingang xinpian District sub branch Pledgor: SHANGHAI GUOHUI ENVIRONMENTAL PROTECTION TECHNOLOGY GROUP Co.,Ltd. Registration number: Y2023310000558 |
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