CN205368093U - Sludge dewatering mummification processing system based on electroosmosis - Google Patents

Abstract

The utility model relates to a sludge dewatering mummification processing system based on electroosmosis, including a pressure filter, the pressure filter includes a plurality of superimposed filter plates in proper order, forms a mud between two adjacent filter plates and holds the chamber, the filter plate has hollow medium and holds the chamber, still is provided with the medium import and medium export of holding the chamber intercommunication with the medium on the filter plate, the medium hold the chamber pass through the medium import with the medium export establish ties in the media rotation pipeline, the exhalant canal of mud appearance chamber on through the filter plate is connected with the delivery pipe of filtrating, the filtrating delivery pipe still is connected with evacuating device through the diverter valve, the filter plate all is equipped with the electrode on the surface, and electrode that every mud holds the chamber both sides is connected with the two poles of the earth of power respectively. Under the effect of electrode, the electroosmosis effect takes place for mud, and the moisture in the mud is isolated to take moisture out from the exhalant canal through evacuating device, the water content in the mud can be further reduced like this, the dewatering effect of mud is improved.

Description

A sludge dehydration and drying treatment system based on electro-osmosis

technical field

The utility model relates to a sludge dehydration and drying treatment system based on electroosmosis, which belongs to the field of sewage treatment.

Background technique

In sewage treatment, activated sludge process is currently the most widely used sewage treatment technology. After the sewage is treated with activated sludge, a large amount of residual activated sludge will be produced. These remaining activated sludge contain a large amount of harmful substances, such as parasite eggs, pathogenic microorganisms, heavy metals, and unstabilized organic matter. If they are not treated effectively, they will have a bad impact on the environment. Our country produces 80,000 tons of wet sludge per day, including 40,000 tons of industrial wet sludge, with an annual growth rate of 10-15%. Such a huge amount of sludge needs to be treated in a timely and effective manner to achieve reduction and harmlessness. The purpose of globalization, stabilization and resource utilization. Sludge contains a lot of water, and dehydration treatment is the first step in sludge reduction treatment. Squeeze sludge and heat dehydration is an existing treatment method. For example, the patent application number CN2012100454363 relates to a The complete set of low-temperature vacuum dehydration and drying equipment and its technology, the patent No. ZL201120498066X relates to a heating filter plate, and the patent No. 201120498495.7 relates to a diaphragm filter plate. The sludge dehydration treatment method involved in these technologies uses pressing After treatment by dehydration treatment methods such as heating and heating, although the moisture content in the sludge can be reduced to a low state, the treatment efficiency is relatively low, and the energy consumption of the treatment process is relatively large.

Utility model content

In order to overcome the defects of the prior art, the utility model provides a sludge dehydration and drying treatment system based on electroosmosis, which can further reduce the moisture content in the sludge, improve the sludge treatment efficiency, and reduce the energy consumption of the treatment process.

In order to achieve the above and related purposes, a sludge dehydration and drying treatment system based on electro-osmosis of the utility model adopts the following technical scheme: a sludge dehydration and drying treatment system based on electro-osmosis, including a filter press, The filter press includes a plurality of successively stacked filter plates, and a sludge chamber is formed between two adjacent filter plates; A mud channel and a water outlet channel; the filter plate has a hollow medium cavity, the filter plate is also provided with a medium inlet and a medium outlet connected to the medium cavity, and both sides of the filter plate have filter plate surfaces facing the sludge cavity, The surface of the filter plate is covered in the filter cloth; the medium cavity on the filter plate is connected in series in the medium circulation pipeline through the medium inlet and the medium outlet, and the water outlet channels on each filter plate are connected to each other and connected to the filtrate The discharge pipe is connected to each other, and the filtrate discharge pipe is also connected to the vacuum device through a switching valve; electrodes are arranged on the surface of the filter plate, and the electrodes on both sides of each sludge chamber are respectively connected to the two poles of the power supply.

Preferably, the filter plate is also provided with an air pressure port communicating with the water outlet channel, and the air pressure port is in communication with the air pressure device.

Preferably, the filter plates are all diaphragm filter plates, the surface of the filter plate on both sides of the diaphragm filter plate is a flexible pressure-resistant heat-conducting diaphragm, and a first plate frame is arranged around the heat-conducting diaphragm, between the first plate frame and the heat-conducting diaphragm on both sides A first medium chamber is formed between them.

Preferably, the filter plate includes a diaphragm filter plate and a heating filter plate, and the diaphragm filter plate and the heating filter plate are arranged at intervals; the surface of the filter plate on both sides of the diaphragm filter plate is a flexible pressure-resistant and heat-conducting diaphragm, and the periphery of the heat-conducting diaphragm is provided with a first Plate frame, the first medium cavity is formed between the first plate frame and the heat conduction diaphragm on both sides; the surface of the filter plate on both sides of the heating filter plate is a heat conduction plate, and a second plate frame is arranged around the heat conduction plate, and the second plate frame A second medium chamber is formed between the heat conducting plates on both sides.

Further, the heat conduction plate is a metal plate, and the heat conduction plate constitutes the electrode.

Further, the thermally conductive diaphragm is made of conductive rubber, and the thermally conductive diaphragm constitutes the electrode.

Further, the medium inlet and medium outlet of the membrane filter plate are connected in series in the pressurized medium circulation pipeline.

Further, the medium inlet and medium outlet of the filter plate are connected in series in the heating medium circulation pipeline.

Based on the above technical solution, a sludge dehydration and drying treatment system based on electro-osmosis of the utility model, wherein the filter press includes a plurality of sequentially stacked filter plates, and a sludge container is formed between adjacent filter plates. The surface of both sides of the filter plate is equipped with electrodes for connecting to the power supply. Under the action of the electrodes, the sludge has an electroosmotic effect, and the water in the sludge is separated, and the water is drawn out from the water outlet channel by a vacuum device. ; This can further reduce the water content in the sludge, improve the dehydration effect of the sludge, improve the efficiency of sludge treatment, thereby reducing the energy consumption of the treatment process.

Description of drawings

Fig. 1 is an overall schematic diagram of a sludge dehydration and drying treatment system based on electro-osmosis of the present invention.

Figure 2 is a structural diagram of the filter plate arrangement of the filter press.

Figure 3 is a front view of a membrane filter plate.

Fig. 4 is a sectional view of A-A in Fig. 3 .

Figure 5 is a front view of the heated filter plate.

Fig. 6 is a sectional view of B-B in Fig. 5 .

1 Media inlet of filter press 511a

11 Media outlet of filter plate group 512a

2 vacuum device 520a heat conduction diaphragm

3 The first medium chamber of the air compressor 530a

4 Heating medium circulation pipeline 540a recessed area

5 pressurized medium circulation pipeline 550a sludge channel

6 power supply 560a water outlet channel

61 lead wire 570a communication groove

200 first pressure plate 500b heating filter plate

210 main water outlet 510b second plate frame

220 main sludge inlet 511b medium inlet

300 tail pressure plate 512b medium outlet

310 pressure port 520b heat conduction plate

400 switching valve 530b second medium chamber

500 filter plate 540b recessed area

511 medium inlet 550b sludge channel

512 medium outlet 560b water outlet channel

500a diaphragm filter plate 570b communication groove

510a first plate frame 600 sludge chamber

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail. These embodiments are only used to illustrate the utility model, but not to limit the utility model.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplified descriptions, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

Fig. 1 is an overall schematic diagram of a sludge dehydration and drying treatment system based on electro-osmosis of the present utility model; Fig. 2 is a schematic diagram of a filter plate arrangement structure of a filter press. As shown in Figures 1 and 2, a sludge dehydration and drying treatment system based on electroosmosis includes a filter press 1, and the filter press 1 includes a plurality of sequentially stacked filter plates 500, and the stacked filter plates 500 are arranged in series to form a filter plate group 11, and the filter plate group 11 is pressed from both ends, and a sludge chamber 600 is formed between two adjacent filter plates 500; The sludge channel 550 and the water outlet channel 560 communicated with the sludge chamber 600; the wet sludge from the sludge conditioning tank flows into and fills each sludge chamber 600 through the sludge channel 550; the filter plate 500 has a hollow medium The cavity (530a in FIG. 4/530b in FIG. 6) is used to fill with hot fluid medium or fluid medium with pressure, and the filter plate 500 is also provided with a medium inlet 511 and a medium outlet communicating with the medium cavity 512, respectively used to pass into the fluid medium and outflow the fluid medium, the filter plate 500 has a filter plate surface facing the sludge chamber 600 on both sides, and the filter plate surface is covered in the filter cloth (not shown in the figure) , the wet sludge entering the sludge chamber 600 is between the filter cloths of the two filter plates 500; the medium chamber on the filter plate 500 is connected in series in the medium circulation pipeline (heating medium) through the medium inlet 511 and the medium outlet 512 In the circulation pipeline 4/pressurized medium circulation pipeline 5), the outlet channels 560 on each filter plate 500 communicate with each other and are connected to the filtrate discharge pipe, which is also connected to the vacuum device 2 through the switching valve 400 Electrodes are provided on the surface of the filter plate 500, and the electrodes on both sides of each sludge chamber 600 are connected to the two poles of the power supply 6 respectively. In this way, after the wet sludge in the sludge chamber 600 has been squeezed once and twice, under the action of the electrodes on the surface of the filter plate, the sludge has an electroosmotic effect, and the water in the sludge is separated, further improving the quality of the sludge. Sludge dehydration effect: the water can be extracted from the water outlet channel 560 through the vacuum device 2, which can further reduce the water content in the sludge and improve the sludge dehydration effect. Therefore, a sludge dehydration and drying treatment system based on electroosmosis of the utility model can further reduce the water content of the sludge, improve the efficiency of the sludge dehydration treatment, reduce the energy consumption of the treatment process, and improve the dehydration effect of the sludge.

When performing a press, it is necessary to pressurize the filter plate group 11 from both ends of the filter plate group 11 so that the filter plates 500 are pressed against each other. A first pressure plate 200 and a tail pressure plate 300 are respectively arranged at the tail end, the first pressure plate 200 is fixed to the frame, the tail pressure plate 300 and each filter plate 500 are installed on the frame, the tail pressure plate 300 and each filter plate 500 can be opposite to the frame Slide along the axial direction of the filter plate group 11, and apply pressure on the filter plate group 11 along the axial direction of the filter plate group 11 on the tail pressure plate 300 to press the filter plates 500 against each other; in order to facilitate the passage into the sludge channel 550 To discharge the sludge and water from the water outlet channel 560 , a main sludge inlet 220 for communicating with the sludge conditioning tank and a main water outlet 210 for communicating with the filtrate discharge pipe can be provided on the first pressure plate 200 .

As shown in FIG. 2 , the tail pressure plate 300 is further provided with an air pressure port 310 communicating with the water outlet channel, and the air pressure port 310 is connected with the air pressure device 3 . In this way, the compressed air blown out by the air compressor 3 passes through the compressed air port 310, each sludge chamber 600, each water outlet channel 560, the main water outlet 210 and the main sludge inlet 220 to discharge the moisture therein from the filter plate 500, implementing "normal Blow"; as shown in Figure 2, the air compressor 3 can also be connected to the main sludge inlet 220 of the first pressure plate 200, and the main sludge inlet 220 is used as the air pressure port, and the compressed air blown out by the air compressor 3 passes through the The main sludge inlet 220, each sludge chamber 600 and each water outlet channel 560 discharge the moisture therein from the filter plate 500 to implement "back blowing"; in order to implement both "forward blowing" and "back blowing", you can Connection pipes are arranged between the main sludge inlet 220 and the air compressor 3 and between the air compressor 310 and the air compressor 3, and the connection pipes and the air compressor 310 between the main sludge inlet 220 and the air compressor 3 The switching valve 400 is set on the connecting pipeline between the air compressor device 3 and the air compressor device 3; when "forward blowing", the switching valve 400 on the connecting pipeline between the main sludge inlet 220 and the air compressor device 3 is closed, and the air compressor port 310 is opened The switching valve 400 on the connecting pipeline between the main sludge inlet 220 and the air-compressing device 3; during "back blowing", open the switching valve 400 on the connecting pipeline between the main sludge inlet 220 and the air-compressing device 3, and close the compressed air port 310 and The switching valve 400 on the connecting pipeline between the air compressors 3 .

Diaphragm filter plate 500a and heating filter plate 500b are two kinds of filter plates commonly used in filter presses for sludge dehydration treatment. Each filter plate in the filter plate group 11 is a diaphragm filter plate 500a, and each diaphragm filter plate 500a is stacked successively; or each filter plate in the filter plate group 11 of the filter press 1 includes a diaphragm filter plate 500a and a heating filter plate 500b, the membrane filter plate 500a and the heating filter plate 500b are arranged at intervals.

As shown in Figure 3 and Figure 4, the surface of the filter plate on both sides of the diaphragm filter plate 500a is a flexible pressure-resistant heat-conducting diaphragm 520a, and a first plate frame 510a is arranged around the heat-conducting diaphragm 520a, and the first plate frame 510a and the heat-conducting diaphragm on both sides 520a forms a first medium cavity 530a, and the frame end surfaces on both sides of the first plate frame 510a protrude outward relative to the surface of the heat-conducting diaphragm 520a to form a recessed area 540a, and both sides of the diaphragm filter plate 500a have said recessed area 540a , in the filter plate group 11 of the filter press 1, when each filter plate is a diaphragm filter plate 500a, the recessed areas 540a of two adjacent two diaphragm filter plates 500a are enclosed to form the sludge chamber 600; A support plate (not marked in FIG. 4 ) is also provided inside the heat conduction diaphragm 520a, and a through hole is provided on the support plate, and the support plate is used to support the diaphragm to limit the recess of the heat conduction diaphragm 520a into the first medium cavity 530a; A plate frame 510a is also provided with a communication groove 570a. One end of the communication groove 570a extends to the water outlet channel 560a and communicates with the water outlet channel 560a, and the other end extends to the recessed area 540a and communicates with the recessed area 540a. A membrane filter plate 500a may be provided with a Or a plurality of water outlet channels 560a, and one or more communication grooves 570a may be provided between the water outlet channels 560a and the recessed area 540a.

As shown in Figure 5 and Figure 6, the surface of the filter plate on both sides of the heating filter plate 500b is a heat conduction plate 520b, and the periphery of the heat conduction plate 520b is provided with a second plate frame 510b, between the second plate frame 510b and the heat conduction plates 520b on both sides The second medium cavity 530b is formed between them; the frame end surfaces on both sides of the second plate frame 510b protrude outward relative to the surface of the heat conducting plate 520b to form a recessed area 540b, and both sides of the heating filter plate 500b have said recessed area 540b. In the filter plate group 11 of the filter press 1, when the diaphragm filter plate 500a and the heating filter plate 500b are arranged at intervals in sequence, the recessed area 540a of the adjacent diaphragm filter plate 500a and the recessed area 540b of the heating filter plate 500b are enclosed to form a The sludge chamber 600; the second plate frame 510b is also provided with a communication groove 570b, one end of the communication groove 570b extends to the water outlet channel 560b and communicates with the water outlet channel 560b, and the other end extends to the recessed area 540b and communicates with the recessed area 540b, One or more water outlet channels 560b may be provided on the heating filter plate 500b, and one or more communication grooves 570b may be provided between the water outlet channels 560b and the recessed area 540b.

In a sludge dehydration and drying treatment system based on electroosmosis of the present utility model, when each filter plate in the filter plate group 11 of the filter press 1 is a diaphragm filter plate 500a, each diaphragm filter plate 500a is stacked in sequence At this time, because the heat-conducting diaphragm 520a on both sides of the diaphragm filter plate 500a is flexible and can withstand relatively high pressure, the medium inlet 511a and the medium outlet 512a of the diaphragm filter plate 500a can be connected in series in the pressurized medium circulation pipeline 5, pressurized The medium is passed into the first medium chamber 530a of the diaphragm filter plate 500a, so that the heat-conducting diaphragm 520a on both sides of the diaphragm filter plate 500a bulges outwards and squeezes the sludge in the sludge chamber 600, so that the moisture in the sludge discharge to achieve secondary pressing; the heat-conducting diaphragm 520a has good thermal conductivity, and the medium inlet 511a and the medium outlet 512a of each diaphragm filter plate 500a can also be connected in series in the heating medium circulation pipeline 4, after the secondary pressing, to the diaphragm The high-temperature fluid medium is passed into the first medium chamber 530a of the filter plate 500a to heat the sludge in the sludge chamber 600, and the moisture in the sludge is converted into heat under the action of the vacuum device 2 at the same time. The steam is discharged; the thermally conductive diaphragm 520a of the diaphragm filter plate 500a can be made of conductive rubber, so that the wire 61 can be connected to the thermally conductive diaphragm 520a, and the thermally conductive diaphragm 520a constitutes an electrode, and the adjacent diaphragm filter plates 500a are respectively connected to the two poles of the power supply 6 , so that the sludge in the sludge chamber 600 undergoes electrodialysis, and the water is separated from the sludge and discharged from the water outlet channel 560a.

In a sludge dehydration and drying treatment system based on electroosmosis of the present utility model, when each filter plate in the filter plate group 11 of the filter press 1 includes a diaphragm filter plate 500a and a heating filter plate 500b, the diaphragm filter plate 500a When arranged at intervals with the heating filter plate 500b, the recessed area 540a of the adjacent diaphragm filter plate 500a and the recessed area 540b of the heating filter plate 500b form the sludge chamber 600; because the heat-conducting diaphragm 520a on both sides of the diaphragm filter plate 500a It is flexible and can withstand high pressure. The medium inlet 511a and medium outlet 511b of the membrane filter plate 500a can be connected in series in the pressurized medium circulation pipeline 5, and the pressurized medium is passed into the first medium container of the membrane filter plate 500a. In the chamber 530a, the heat-conducting diaphragms 520a on both sides of the diaphragm filter plate 500a bulge outwards to squeeze the sludge in the sludge chamber 600, so that the water in the sludge is discharged to realize secondary pressing; the heat conduction of the heating filter plate 500b The plate 520b has a good heat conduction effect, and the heat conduction diaphragm 520a of the diaphragm filter plate 500a also has a good heat conduction effect. After the secondary pressing, the medium inlets 511b, 511a and the medium outlet 512b of the heated filter plate 500b and the diaphragm filter plate 500a can be , 512a are all connected in series in the heating medium circulation pipeline 4, and the high-temperature fluid medium is passed into the second medium chamber 530b, 530a of the heating filter plate 500b and the diaphragm filter plate 500a, and the sludge in the sludge chamber 600 Heating, under the action of the vacuum device 2, the moisture in the sludge is converted into hot steam and discharged; the heat-conducting diaphragm 520a of the diaphragm filter plate 500a can also be made of conductive rubber, so that the wire 61 can be connected to the heat-conducting diaphragm 520a, the heat conduction diaphragm 520a constitutes an electrode; the heat conduction plate 520b of the heating filter plate 500b can be made of metal material, and the heat conduction plate 520b constitutes the electrode. The electrodes on the diaphragm filter plate 500a and the heating filter plate 500b are respectively connected to the two poles of the power supply 6, so that the sludge in the sludge chamber undergoes electrodialysis, and the water is further separated from the sludge and discharged from the water outlet channel.

Because the medium inlet 511a and the medium outlet 512a of the membrane filter plate 500a can be connected in series in the pressurized medium circulation pipeline 5, and can also be connected in series in the heating medium circulation pipeline 4, in order to be able to switch and pass into the membrane filter plate 500a conveniently The medium in the first medium chamber 530a, as shown in Figure 1, can communicate with the heating circulation pipeline 4 connected with the membrane filter plate 500a and the pressurization circulation pipeline 5 with a connecting pipe, and in the heating circulation pipeline 4 A switching valve 400 is provided on the pressurized circulation pipeline 5 .

Based on the above-mentioned embodiments, a sludge dehydration and drying treatment system based on electro-osmosis of the present utility model, wherein the filter press includes a plurality of sequentially stacked filter plates, and a sludge container is formed between adjacent filter plates. The surface on both sides of the filter plate is provided with electrodes for connection with the power supply 6. Under the action of the electrodes, the sludge has an electroosmotic effect, and the water in the sludge is separated, and the water is removed from the outlet water by the vacuum device 2. The channel is drawn out; this can further reduce the water content in the sludge, improve the dehydration effect of the sludge, improve the efficiency of sludge treatment, and thus reduce the energy consumption of the treatment process.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and replacements can also be made. And replacement should also be regarded as the protection scope of the present utility model.

Claims (8)

1. process a system based on the sludge dehydrating and drying of electro-osmosis, including a pressure filter,

Described pressure filter (1) includes multiple filter plate (500) overlapped successively, forms a mud cavity volume (600) between two adjacent filter plates (500)；Filter plate (500) is provided through filter plate (500) the mud passage (550a/550b) connected with described mud cavity volume (600) and exhalant canal (560a/560b)；

Described filter plate (500) has the medium cavity volume (530a/530b) of hollow, filter plate (500) is additionally provided with the medium entrance (511a/511b) and media outlet (512a/512b) that connect with medium cavity volume (530a/530b), filter plate (500) both sides have the filter plate surface towards mud cavity volume (600), within described filter plate surface is covered by filter cloth；

It is characterized in that,

Medium cavity volume (530a/530b) on described filter plate (500) is connected in medium circulation pipeline (4/5) by medium entrance (511a/511b) and media outlet (512a/512b), exhalant canal (560a/560b) on each filter plate (500) interconnects, and be connected with filtrate discharge pipe, described filtrate discharge pipe is connected with vacuum extractor (2) also by switching valve (400)；

Being equipped with electrode on described filter plate (500) surface, the electrode of each mud cavity volume (600) both sides is connected with the two poles of the earth of power supply (6) respectively.

2. the sludge dehydrating and drying based on electro-osmosis as claimed in claim 1 processes system, it is characterized in that: described pressure filter also includes the mouth of calming the anger (310) connected with the exhalant canal (560a/560b) on filter plate (500), described in mouth (310) of calming the anger connect with air compressing device (3).

3. the sludge dehydrating and drying based on electro-osmosis as claimed in claim 1 processes system, it is characterized in that: described filter plate (500) is membrane filter plate (500a), the filter plate surface of membrane filter plate (500a) both sides is flexible pressure-resistant heat conduction barrier film (520a), heat conduction barrier film (520a) periphery is provided with the first sheet frame (510a), forms described first medium cavity volume (530a) between the heat conduction barrier film (520a) of the first sheet frame (510a) and both sides.

4. the sludge dehydrating and drying based on electro-osmosis as claimed in claim 1 processes system, it is characterized in that: described filter plate (500) includes membrane filter plate (500a) and heating filter plate (500b), membrane filter plate (500a) and heating filter plate (500b) and is intervally arranged；

The filter plate surface of membrane filter plate (500a) both sides is flexible pressure-resistant heat conduction barrier film (520a), heat conduction barrier film (520a) periphery is provided with the first sheet frame (510a), forms first medium cavity volume (530a) between the heat conduction barrier film (520a) of the first sheet frame (510a) and both sides；

The filter plate surface of the both sides of heating filter plate (500b) is heat-conducting plate (520b), heat-conducting plate (520b) periphery is provided with the second sheet frame (510b), forms second medium cavity volume (530b) between the heat-conducting plate (520b) of the second sheet frame (510b) and both sides.

5. the sludge dehydrating and drying based on electro-osmosis as claimed in claim 4 processes system, it is characterized in that: described heat-conducting plate (520b) is metallic plate, and described heat-conducting plate (520b) constitutes described electrode.

6. the sludge dehydrating and drying based on electro-osmosis as described in claim 3 or 4 processes system, it is characterized in that: described heat conduction barrier film (520a) is made up of conductive rubber, and described heat conduction barrier film (520a) constitutes described electrode.

7. the sludge dehydrating and drying based on electro-osmosis as described in claim 3 or 4 processes system, it is characterized in that: medium entrance (511a) and the media outlet (512a) of described membrane filter plate (500a) are connected in pressure medium circulation line (5).

8. the sludge dehydrating and drying based on electro-osmosis as described in claim 3 or 4 processes system, it is characterized in that: the medium entrance (511a/511b) of described filter plate (500) and media outlet (512a/512b) are connected in heating medium circulation pipeline (4).