CN115364538B - Membrane filter press filter unit based on electroosmosis enhanced dehydration - Google Patents
Membrane filter press filter unit based on electroosmosis enhanced dehydration Download PDFInfo
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- CN115364538B CN115364538B CN202211116350.5A CN202211116350A CN115364538B CN 115364538 B CN115364538 B CN 115364538B CN 202211116350 A CN202211116350 A CN 202211116350A CN 115364538 B CN115364538 B CN 115364538B
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- 239000012528 membrane Substances 0.000 title claims abstract description 41
- 238000005370 electroosmosis Methods 0.000 title claims abstract description 34
- 230000018044 dehydration Effects 0.000 title claims abstract description 20
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 68
- 239000004744 fabric Substances 0.000 claims abstract description 63
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 238000005728 strengthening Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000004020 conductor Substances 0.000 claims description 7
- 229920001940 conductive polymer Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002861 polymer material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 abstract description 3
- 239000012065 filter cake Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 16
- 208000005156 Dehydration Diseases 0.000 description 13
- 239000002245 particle Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
- B01D25/285—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by compression using inflatable membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
-
- 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
-
- 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
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a membrane filter press filtering unit based on electroosmosis strengthening dehydration, wherein a filtering unit body comprises a membrane plate and filter plates arranged on two sides of the membrane plate, the membrane plate comprises a central plate and pressing plate frames positioned on two sides of the central plate, the pressing plate frames are fixed on the central plate, the middle parts of the two sides of the central plate and the filter plates are respectively provided with an indent, a membrane and a pressing frame filter cloth are fixed at the inner frame of the pressing plate frames, the pressing frame filter cloth is positioned at one side of the central plate on the membrane, the filter plates are provided with filter plate filter cloth on one side of the filter plates, the two sides of the central plate and the filter plates are respectively provided with hanging lugs, and the two sides of the filtering unit body are respectively provided with conductive sliding rails for placing the hanging lugs, namely anode conductive sliding rails and cathode conductive sliding rails. In the invention, the suspension lugs and the conductive sliding rails are adopted as the power supply body of each filter unit, and the conductivities of the suspension lugs on the diaphragm plate and the filter plate are utilized to adjust the cathode and the anode according to the requirements, so that the complex circuit design is avoided.
Description
Technical Field
The invention relates to the field of membrane filter presses, in particular to a membrane filter press filtering unit based on electroosmosis enhanced dehydration.
Background
Naturally occurring solids (e.g., soil, rock, river and lake sediments, etc.) often have some electrical properties on their surface (in most cases electronegativity). When the solid particles are contacted with water, the charged surfaces thereof adsorb a part of water molecules under the action of electrostatic attraction, thereby forming weakly bound water. Conventional dewatering techniques typically rely on mechanical forces (e.g., physical pressing, centrifugation) or heat (e.g., heat drying) to effect solid-liquid separation. Wherein, physical squeezing or centrifugation can remove most of gravity water, and weak binding water is difficult to remove; the heat drying technology can dry gravity water and combined water, but the required energy consumption is huge.
Electroosmosis technology has also been applied to the field of solid-liquid separation since the discovery of electroosmosis phenomenon in solid-liquid systems. The principle of electroosmosis is based on an electric double layer generated in a liquid phase by the electric property of the surface of solid particles, and the electric charge in the electric double layer moves to an electrode by applying an external electric field, so that a drag force is formed on weakly bound water in the process, and the water in pore channels is driven to flow along with the drag force. From this, it can be seen that: the mechanical dewatering mechanism realizes solid-liquid separation by driving gravity water; the electroosmosis dehydration mechanism realizes solid-liquid separation by driving weak binding water on the surfaces of solid particles. Therefore, the synergetic technology of mechanical force and electroosmosis is widely applied in the field of solid-liquid separation based on respective dehydration mechanisms of mechanical force and electroosmosis.
Mechanical pressing is the most common process relying on mechanical force for dewatering. Compared with the centrifugal dehydration process, the mechanical squeezing process has the advantages of less equipment investment, large treatment capacity and convenient operation, thus having remarkable cost benefit. Common mechanical press process equipment is: a chamber filter press, a plate-and-frame filter press, a membrane filter press, a belt filter press, a spiral shell stacking machine, etc. Compared with a belt filter press and a spiral shell stacking machine, the box type, plate frame and membrane filter press has the remarkable characteristic of good dehydration effect. Therefore, box, plate and frame and membrane filter presses are the most commonly used mechanical dewatering equipment in geotechnical and municipal engineering at present.
Since most particle surfaces from rock or soil are negatively charged, the effect of electroosmosis is to drive the flow of water in the filter cake towards the cathode. This can lead to the following problems:
the filter cake near the anode has the phenomena of water loss, drying shrinkage, cracking and the like, so that the conductivity is reduced, even the filter cake is separated from the anode, thereby increasing the energy consumption of the electroosmosis process, even the filter cake is completely separated from the anode, and the circuit is interrupted to cause the electroosmosis process to fail. CN201620119895.5 discloses a sludge dewatering metal plate-and-frame filter press device with a dialysis function, but since it uses a plate-and-frame filter press, there is no method that can make the filter cake contact with the electrode all the time after the filter cake is formed.
In the synergetic dehydration technology based on a plate-and-frame filter press or a box filter press and electroosmosis, the main disadvantage is that the mechanical squeezing force is insufficient; in the collaborative dehydration technology based on membrane filter press and electroosmosis, the problems of complex equipment system and overlong process path generally exist because the membrane used as an anode is required to have conductivity and the conductive membrane is prevented from being short-circuited with a cathode in the tympanic membrane squeezing process.
Disclosure of Invention
The invention aims to provide a membrane filter press filtering unit based on electroosmosis enhanced dehydration.
The invention has the innovation points that the hangers and the conductive sliding rails are adopted as the power supply body of each filter unit, and the conductivities of the hangers on the diaphragm plate and the filter plate are utilized to adjust the cathode and the anode according to the requirements, so that the complex circuit design is avoided; and the energization is performed simultaneously with the diaphragm pressing, that is, the diaphragm pressing and the electroosmosis are performed simultaneously. The filter cake is always in a pressed state in the electroosmosis process, so that the problem of poor contact between the filter cake and the anode can be avoided.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a filter unit of membrane filter press based on electro-osmosis strengthening dehydration, the filter unit body includes the diaphragm board and arranges the filter plate in diaphragm board both sides, and the diaphragm board includes the center plate and is located the clamp plate frame of center plate both sides, the clamp plate frame is fixed on the center plate, and center plate and filter plate both sides middle part all are equipped with the indent, and clamp plate frame inside casing department is fixed with diaphragm and clamp plate filter cloth, diaphragm position center plate one side department, clamp plate filter cloth is located filter plate one side department, filter plate both sides are equipped with filter plate filter cloth, center plate and filter plate both sides all are equipped with the hangers, center conductive hangers of center plate one side end, center nonconductive hangers of the other side end are the same side end of filter plate and center conductive hangers of center plate filter plate on the center plate, the other side end is the filter plate conductive hangers; the two sides of the filter unit body are provided with conductive sliding rails for holding hanging lugs, namely an anode conductive sliding rail and a cathode conductive sliding rail; the central plate is provided with a central wire hole for the conductive wires to pass through; the pressure filter frame is provided with a conductive connecting column which is used for electrically communicating the central conductive column with the diaphragm, and the diaphragm is made of conductive materials; the filter plate comprises a concave part and a non-concave part, the concave part is conductive, the non-concave part is non-conductive, a filter plate wire guide hole for communicating the concave part with the cathode hanger is arranged in the filter plate, and a filter plate conductive column is arranged in the filter plate wire guide hole for electrically communicating the concave part with the filter plate conductive hanger.
Further, a diaphragm groove and a filter cloth groove are formed in the inner frame of the pressing plate frame, a diaphragm fixing hole is formed in the side face of the diaphragm groove, and the diaphragm is plugged into the diaphragm fixing piece through the diaphragm fixing hole to limit; the side face of the filter plate groove is provided with a filter cloth fixing hole, and the filter cloth of the press frame is plugged into the filter cloth fixing piece to be fixed through the filter cloth fixing hole. And the limit is convenient.
Further, one of the diaphragm fixing members is a conductive connecting column. And a conductive connecting column is not needed to be additionally manufactured, so that the method is more convenient.
Further, the concave part of the filter plate is made of conductive plastic. Is not easy to be corroded.
Further, a diaphragm sealing strip is arranged in the diaphragm groove. The sealing effect is better.
Further, liquid inlet holes are formed in the central plate, the filter plates, the filter plate filter cloth, the press frame filter cloth and the diaphragm to form liquid inlet channels, and the liquid inlet holes between the filter plate filter cloth on two sides of the central plate are connected through a water isolation pipe; the central plate, the pressing plate frame, the filter plate filter cloth and the pressing frame filter cloth are respectively provided with a liquid discharge hole and a pressing medium hole, the liquid discharge holes are communicated to form a liquid discharge channel, and the pressing medium holes are communicated to form a pressing medium channel; the filter plate filter cloth and the press frame filter cloth form a filter chamber, a pressing chamber is formed between the diaphragm and the central plate indent, a plurality of pressing medium circulation channels which are used for communicating the pressing chamber with the pressing medium channels are arranged on two sides of the central plate, and liquid discharge circulation channels which are used for communicating the filter chamber with the liquid discharge channels are arranged on two sides of the filter plate and on the press plate frame.
Further, the press media passage is located below the recessed portion. The later stage of the pressing medium may be discharged by gravity.
Further, the number of the liquid discharge channels is 2, and the liquid discharge channels are respectively positioned at the left side and the right side of the pressing medium channel. The liquid discharge speed is faster.
Further, the platen frame and the center plate are connected by bolts.
Further, the press frame filter cloth and the filter plate filter cloth are made of conductive materials; the diaphragm material is conductive polymer material. The frame pressing filter cloth and the filter plate filter cloth are made of conductive materials, so that the conductivity is better, and the diaphragm is not easy to corrode due to the conductive polymer materials of the diaphragm materials.
The beneficial effects of the invention are as follows:
1. in the invention, the hangers and the conductive sliding rails are adopted as the power supply body of each filter unit, and the conductivities of the hangers on the diaphragm plate and the filter plate are utilized to adjust the cathode and the anode according to the requirements, so that complex circuit design is avoided; and the energization is performed simultaneously with the diaphragm pressing, that is, the diaphragm pressing and the electroosmosis are performed simultaneously. The filter cake is always in a pressed state in the electroosmosis process, so that the problem of poor contact between the filter cake and the anode can be avoided.
2. The invention adopts a mode of sandwiching a diaphragm plate between two filter plates, namely a single-sided squeezing mode, which can ensure that electrodes, namely the diaphragm and the conductive concave parts on the filter plates, are always in contact with the filter plates in the squeezing process, can ensure the energy utilization efficiency of electroosmosis and reduce the fixing cost of equipment to a certain extent.
3. The invention combines the conductive diaphragm and the filter cloth with the non-conductive pressing plate frame and the non-conductive central plate, and simultaneously adopts a mode that the conductive wire is arranged in the central plate to connect the conductive suspension lugs on the central plate with the conductive diaphragm, thereby avoiding the problem that the conductive diaphragm serving as an anode forms a short circuit with the cathode filter plate and the filter cloth.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the center plate.
Fig. 3 is a schematic longitudinal cross-sectional view of a diaphragm plate.
Fig. 4 is a schematic cross-sectional view of a center plate.
Fig. 5 is a schematic structural view of a platen frame.
Fig. 6 is a schematic longitudinal cross-sectional view of a platen frame.
Fig. 7 is a schematic view of the structure of the filter sheet.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1: as shown in fig. 1, 2, 3, 4, 5, 6 and 7, a membrane filter press filter unit based on electro-osmosis enhanced dehydration, wherein a filter unit body comprises a membrane plate 1 and filter plates 2 arranged on two sides of the membrane plate 1, the membrane plate 1 comprises a central plate 1.1 and pressing plate frames 1.2 positioned on two sides of the central plate 1.1, the pressing plate frames 1.2 are fixed on the central plate 1.1, and the pressing plate frames 1.2 and the central plate 1.1 are connected through bolts. The middle parts of the two sides of the central plate 1.1 and the filter plate 2 are respectively provided with an indent, a diaphragm 1.3 and a pressing frame filter cloth 1.4 are fixed at the inner frame part of the pressing plate frame 1.2, the diaphragm 1.3 is positioned at one side of the central plate 1.1, the pressing frame filter cloth 1.4 is positioned at one side of the filter plate 2, the two sides of the filter plate 2 are provided with the filter plate filter cloth 3, and the pressing frame filter cloth 1.4 and the filter plate filter cloth 3 are made of conductive materials; the diaphragm 1.3 is made of conductive polymer material. The two sides of the central plate 1.1 and the filter plate 2 are respectively provided with a hanging lug, one side end of the central plate 1.1 is provided with a central conductive hanging lug 4.1, the other side end is provided with a central non-conductive hanging lug 4.2, the central conductive hanging lugs 4.1 on the filter plate 2 and the central plate 1.1 are provided with a non-conductive hanging lug 4.3 of the filter plate at the same side end, and the other side end is provided with a conductive hanging lug 4.4 of the filter plate; the two sides of the filter unit body are provided with conductive sliding rails for holding hanging lugs, namely an anode conductive sliding rail 5.1 and a cathode conductive sliding rail 5.2; the central plate 1.1 is provided with a conductive post mounting hole 1.11 which penetrates through the plate surface of the central plate 1.1, a central conductive post 1.12 is arranged in the conductive post mounting hole 1.11, the central conductive post 1.12 is electrically communicated with the central conductive hanger 4.1 through a conductive wire 1.14, and the central plate 1.1 is provided with a central conductive wire hole 1.13 used for the conductive wire 1.14 to penetrate through; the pressure filter frame 1.2 is provided with a conductive connecting column 1.21 which electrically connects the central conductive column 1.12 and the diaphragm 1.3, and the diaphragm 1.3 is made of conductive material; the filter plate 2 comprises a concave part 2.1 and a non-concave part 2.2, the concave part 2.1 is conductive, the concave part 2.1 of the filter plate 2 is made of conductive plastic, the non-concave part 2.2 is non-conductive, a filter plate wire hole 2.3 for communicating the concave part 2.1 with a filter plate conductive hanging lug 4.4 is arranged in the filter plate 2, and a filter plate conductive column 2.4 for electrically communicating the concave part 2.1 with the filter plate conductive hanging lug 4.4 is arranged in the filter plate wire hole 2.3.
The inner frame of the pressing plate frame 1.2 is provided with a diaphragm groove 1.5 and a filter cloth groove 1.6, the side surface of the diaphragm groove 1.5 is provided with a diaphragm fixing hole 1.51, and the diaphragm 1.3 is limited by being plugged into a diaphragm fixing piece 1.52 through the diaphragm fixing hole 1.51; a diaphragm sealing strip 1.53 is arranged in the diaphragm groove 1.5. One of the diaphragm holders 1.52 is an electrically conductive connecting post 1.21. The side surface of the filter plate groove 1.6 is provided with a filter cloth fixing hole 1.61, and the filter cloth 1.4 of the press frame is plugged into a filter cloth fixing piece 1.62 through the filter cloth fixing hole 1.61 to be fixed.
The central plate 1.1, the filter plate 2, the filter plate filter cloth 3, the press frame filter cloth 1.4 and the diaphragm 1.3 are respectively provided with a liquid inlet 6 to form a liquid inlet channel 7, and the liquid inlet 6 between the filter plate filter cloths 3 at the two sides of the central plate 1.1 is connected through a water isolation pipe 6.1; the central plate 1.1, the pressing plate frame 1.2, the filter plate 2, the filter plate filter cloth 3 and the pressing frame filter cloth 1.4 are respectively provided with a liquid discharge hole 8 and a pressing medium hole 9, the liquid discharge holes 8 are communicated to form a liquid discharge channel 10, and the pressing medium holes 9 are communicated to form a pressing medium channel 11; the pressing medium channels 11 are arranged below the concave parts 2.1, and 2 liquid discharge channels 10 are respectively arranged at the left side and the right side of the pressing medium channels 11. A filter chamber 12 is formed between the filter plate filter cloth 3 and the press frame filter cloth 1.4, a pressing chamber 13 is formed between the diaphragm 1.3 and the concave of the central plate 1.1, a plurality of pressing medium circulation channels 14 which are used for communicating the pressing chamber 13 with the pressing medium channels 11 are arranged on two sides of the central plate 1.1, and liquid discharge circulation channels 15 which are used for communicating the filter chamber 12 with the liquid discharge channels 10 are arranged on two sides of the filter plate 2 and the press frame 1.2.
The using method comprises the following steps:
(1) The assembled filter units are placed on a filter press, wherein the central conductive lugs 4.1 on the central plate 1.1 and the non-conductive lugs 4.3 on the filter plates 2 are placed on the anode conductive slide rail 5.1 connected to the anode of an external direct current source, and the individual filter units are pressed in a conventional manner, one filter unit forming two filter chambers 12 and two press chambers 13.
(2) When in squeezing, the squeezing medium channel 11 is closed, and the liquid inlet channel 7 and the liquid outlet channel 10 are opened; pumping the slurry to be treated into the filter chamber 12 through the liquid inlet channel 7; the solid particles in the slurry are trapped in the filter chamber 12 by the filter plate filter cloth 3 on the filter plate 2 and the press frame filter cloth 1.4 on the press plate frame 1.2, the filtrate passing through the filter plate filter cloth 3 flows into the drain passage 10 via the drain flow passage 15 on the filter plate 2 to be discharged, and the filtrate passing through the press frame filter cloth 1.4 flows into the drain passage 10 via the drain passage 15 in the press plate frame 1.2 to be discharged.
(3) After the filter chamber 12 is filled with solid particles in the slurry and forms a filter cake, the liquid inlet channel 7 is closed, the pressing medium channel 11 is opened, the pressing medium (water or gas with a certain pressure) is filled into the pressing chamber 13 between the diaphragm 1.3 and the central plate 1.1 on the pressing plate frame 1.2, the pressing medium pushes the diaphragm 1.3 to move towards the filter chamber 12, the filter cake is pressed to form secondary dehydration, the filtrate passing through the filter plate filter cloth 3 flows into the liquid outlet channel 10 through the liquid outlet channel 15 on the filter plate 2 and is discharged, and the filtrate passing through the pressing plate frame filter cloth 1.4 flows into the liquid outlet channel 10 through the liquid outlet channel 15 in the pressing plate frame 1.2 and is discharged.
(4) And (3) turning on a direct current power supply to supply power to the anode conductive slide rail 5.1 and the cathode conductive slide rail 5.2 while the step (3) is implemented. The current flows into the anode conductive sliding rail 5.1 from the positive electrode of the direct current power supply, enters the conductive wire 1.14 and the central conductive column 1.12 on the central plate 1.1 through the conductive central conductive hanging lug 4.1 on the anode conductive sliding rail 5.1, and enters the diaphragm 1.2.2 through the conductive connecting column 1.21 on the pressing plate frame 1.2; after being conducted by the filter cake, the filter cake flows into the cathode conductive sliding rail 5.2 through the conductive concave part 2.1, the conductive post 2.4 and the conductive hanging lug 4.4 on the filter board 2, and finally returns to the negative electrode of the power supply.
(5) According to the current flowing direction of (4), the diaphragm 1.3 on the pressing plate frame 1.2 on one side of the filter cake in the filter chamber 12 is the anode of the filter cake, and the concave part 2.1 of the filter cake 2 on the other side is the cathode of the filter cake. Therefore, a potential difference is formed on two sides of the filter cake, so that the water in the filter cake is electroosmosis.
(6) If the electroosmosis action causes the water in the filter cake to flow to the cathode, the anode conductive slide rail 5.1 is connected with the anode of the direct current power supply; if the electroosmosis action causes the water in the filter cake to flow to the anode, the anode conductive slide rail 5.1 is connected with the cathode of the direct current power supply, so that the electroosmosis flow direction of the water is kept consistent with the water flow direction driven by the diaphragm press, namely, the water flows to the filter plate.
(7) After the dehydration is finished, the pressure in the filter pressing medium channel 11 is released, and at the moment, the pressing medium in the pressing chamber 13 is discharged through the pressing medium channel 11 under the action of dead weight; and simultaneously, the direct current power supply is turned off.
(8) The membrane plate 1 and the filter plate 2 are separated, and the filter cake is discharged from the filter chamber 12.
The described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (9)
1. The utility model provides a filter unit of membrane filter press based on electro-osmosis strengthening dehydration, the filter unit body includes the diaphragm board and arranges the filter plate in diaphragm board both sides, and the diaphragm board includes the center plate and is located the clamp plate frame of center plate both sides, clamp plate frame is fixed on the center plate, and center plate and filter plate both sides middle part all are equipped with indent, and clamp plate frame inside casing department is fixed with diaphragm and clamp plate filter cloth, diaphragm position center plate one side department, clamp plate filter cloth is located filter plate one side department, filter plate both sides are equipped with filter plate filter cloth, characterized by that, center plate and filter plate both sides are equipped with the hangers, center conductive hangers of center plate one side end is the center conductive hangers of center plate, and center conductive hangers of center plate and center plate on the center plate are filter plate non-conductive hangers of same side end, the opposite side is the filter plate conductive hangers; the two sides of the filter unit body are provided with conductive sliding rails for holding hanging lugs, namely an anode conductive sliding rail and a cathode conductive sliding rail; the central plate is provided with a central wire hole for the conductive wires to pass through; the pressure filter frame is provided with a conductive connecting column which is used for electrically communicating the central conductive column with the diaphragm, and the diaphragm is made of conductive materials; the filter plate comprises a concave part and a non-concave part, the concave part is conductive, the non-concave part is non-conductive, a filter plate wire guide hole which is used for communicating the concave part with the cathode hanger is arranged in the filter plate, and a filter plate conductive column is arranged in the filter plate wire guide hole to electrically communicate the concave part with the filter plate conductive hanger;
the central plate, the filter plates, the filter plate filter cloth, the press frame filter cloth and the diaphragms are all provided with liquid inlets to form liquid inlets, and the liquid inlets between the filter plate filter cloth on two sides of the central plate are connected through a water isolation pipe; the central plate, the pressing plate frame, the filter plate filter cloth and the pressing frame filter cloth are respectively provided with a liquid discharge hole and a pressing medium hole, the liquid discharge holes are communicated to form a liquid discharge channel, and the pressing medium holes are communicated to form a pressing medium channel; the filter plate filter cloth and the press frame filter cloth form a filter chamber, a pressing chamber is formed between the diaphragm and the central plate indent, a plurality of pressing medium circulation channels which are used for communicating the pressing chamber with the pressing medium channels are arranged on two sides of the central plate, and liquid discharge circulation channels which are used for communicating the filter chamber with the liquid discharge channels are arranged on two sides of the filter plate and on the press plate frame.
2. The filter unit of the membrane filter press based on electroosmosis enhanced dehydration according to claim 1, wherein a membrane groove and a filter cloth groove are arranged at the inner frame of the pressing plate frame, a membrane fixing hole is arranged on the side surface of the membrane groove, and the membrane is plugged into a membrane fixing piece through the membrane fixing hole to limit; the side face of the filter plate groove is provided with a filter cloth fixing hole, and the filter cloth of the press frame is plugged into the filter cloth fixing piece to be fixed through the filter cloth fixing hole.
3. The electro-osmotic enhanced dewatering-based membrane filter press filtration unit of claim 2, wherein one of the membrane fixtures is a conductive connecting post.
4. The filter unit of the membrane filter press based on electroosmosis enhanced dehydration according to claim 1, wherein the concave part of the filter plate is made of conductive plastic material.
5. The filter unit of the membrane filter press based on electroosmosis enhanced dehydration according to claim 2, wherein a membrane sealing strip is arranged in the membrane tank.
6. The electroosmosis enhanced dewatering based membrane filter press filtration unit of claim 1, wherein the press media channel is located below the recess.
7. The filtration unit of the membrane filter press based on electroosmosis enhanced dewatering of claim 1, wherein the number of the drainage channels is 2, and the drainage channels are respectively positioned at the left side and the right side of the pressing medium channel.
8. The electro-osmotic enhanced dewatering based membrane filter press filtration unit of claim 1, wherein the platen frame and center plate are bolted.
9. The filtration unit of the membrane filter press based on electroosmosis enhanced dehydration according to claim 1, wherein the frame filter cloth and the filter plate filter cloth are made of conductive materials; the diaphragm material is conductive polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211116350.5A CN115364538B (en) | 2022-09-14 | 2022-09-14 | Membrane filter press filter unit based on electroosmosis enhanced dehydration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211116350.5A CN115364538B (en) | 2022-09-14 | 2022-09-14 | Membrane filter press filter unit based on electroosmosis enhanced dehydration |
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| Publication Number | Publication Date |
|---|---|
| CN115364538A CN115364538A (en) | 2022-11-22 |
| CN115364538B true CN115364538B (en) | 2024-03-26 |
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| CN202211116350.5A Active CN115364538B (en) | 2022-09-14 | 2022-09-14 | Membrane filter press filter unit based on electroosmosis enhanced dehydration |
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| CN116022990A (en) * | 2023-01-06 | 2023-04-28 | 清华大学 | Electroosmosis and filter pressing combined dehydration device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3615015A (en) * | 1968-10-29 | 1971-10-26 | Passavant Werke | Filter press |
| JP2008043903A (en) * | 2006-08-18 | 2008-02-28 | Ebara Corp | Heating filter plate of filter press |
| CN205773889U (en) * | 2016-04-19 | 2016-12-07 | 谢俊磊 | A kind of laboratory waste liquor treatment equipment |
| CN206746078U (en) * | 2017-03-28 | 2017-12-15 | 河南利诺生化有限责任公司 | Alpha linolenic acid filter |
| CN110759532A (en) * | 2019-11-07 | 2020-02-07 | 山东鑫动能锂电科技有限公司 | High-salt concentrated water treatment process for producing iron phosphate by sodium method |
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2022
- 2022-09-14 CN CN202211116350.5A patent/CN115364538B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3615015A (en) * | 1968-10-29 | 1971-10-26 | Passavant Werke | Filter press |
| JP2008043903A (en) * | 2006-08-18 | 2008-02-28 | Ebara Corp | Heating filter plate of filter press |
| CN205773889U (en) * | 2016-04-19 | 2016-12-07 | 谢俊磊 | A kind of laboratory waste liquor treatment equipment |
| CN206746078U (en) * | 2017-03-28 | 2017-12-15 | 河南利诺生化有限责任公司 | Alpha linolenic acid filter |
| CN110759532A (en) * | 2019-11-07 | 2020-02-07 | 山东鑫动能锂电科技有限公司 | High-salt concentrated water treatment process for producing iron phosphate by sodium method |
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| CN115364538A (en) | 2022-11-22 |
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