CN104973748B - A kind of electro-osmosis sludge dewatering composite filter band - Google Patents

Abstract

The object of the present invention is to provide a composite filter belt for electroosmotic sludge dewatering. The technical scheme of the present invention is: comprising a composite filter belt and several insulating sheaths, the composite filter belt is composed of a first polyester layer, a coarse particle adsorption layer, several conductive tapes, a second polyester layer, a fine particle adsorption layer and a water-absorbing layer. layer composition. The composite filter belt is divided into a double-layer filtration process. The large particles in the sludge will be adsorbed by the coarse particle adsorption layer; those fine particles will be adsorbed by the fine particle adsorption layer; The edge water-absorbing layer and the overall water-absorbing layer are composed, and insulating sheaths are added to the exposed two sides of the entire composite filter belt, which has a certain protective effect on the staff. The composite filter belt is made of multi-layer cross composite weaving, and has the functions of acid resistance, alkali resistance, wear resistance and high temperature resistance, long service life, high stability of filter cloth, good water permeability, easy to flatten, and no discount Tear phenomenon, high safety factor.

Description

A composite filter belt for electroosmotic sludge dewatering

technical field

The invention relates to the technical field of environmental protection, in particular to an electroosmotic sludge dewatering composite filter belt.

Background technique

In today's environmental protection field, the dehydration filter belt is an important component used in sewage treatment, power plant desulfurization, paper washing and pulping, chemical industry, tailings treatment, titanium dioxide, coal washing, vegetable oil filtration and other industries. In the past, for various sludge dewatering fields, the composition of the composite filter belt using the electroosmotic dewatering system is relatively traditional, and the structure is relatively simple; the details in the filtration are not particularly ideal, the effect after dehydration is not good, and the water source is turbid ; Even some composite filter belts also lack safety, which will cause potential safety hazards for unprepared staff during work.

The composite filter belt is divided into two-layer filtration procedures. The large particles in the sludge will be adsorbed by the coarse particle adsorption layer under the first polyester layer. This is the first filtration procedure; then some fine particles will fall to the second layer. On the surface of the two-polyester layer, the layer adopts a criss-cross pattern, which allows the sludge to distribute the fine particles infiltrated through the coarse particle adsorption layer in an array during the dehydration process, and then carry out the second filtration process. , those fine particles will be adsorbed by the fine particle adsorption layer under the second polyester layer; the second polyester layer is different from the weaving method of the first polyester layer. The polyester layer in the form can drive impurities, particles or other fine particles to be evenly screened and distributed, so as to achieve layer-by-layer adsorption while dehydrating and penetrating.

The water-absorbing layer at the bottom of the composite filter belt is composed of two edge water-absorbing layers and an overall water-absorbing layer. The two edge water-absorbing layers are located on both sides of the composite filter belt in parallel. The edges absorb moisture. The overall water-absorbing layer mainly absorbs moisture to the composite filter belt during the dehydration process. In addition, insulating sheaths are added to the exposed two sides of the entire composite filter belt, which has a certain protective effect on the staff. The composite filter belt is made of multi-layer cross composite weaving, and a double-layer adsorption layer is added, which makes the adsorption strength of micro particles extremely high, and has the functions of acid resistance, alkali resistance, wear resistance and high temperature resistance, and has a long service life. High stability, good water permeability, easy to flatten, long-term use will not appear discounted tearing phenomenon, high safety factor.

Contents of the invention

The object of the present invention is to provide an electroosmotic sludge dehydration composite filter belt with acid resistance, alkali resistance, wear resistance, high temperature resistance, long service life and good water permeability.

The technical solution of the present invention is: a composite filter belt for electroosmotic sludge dewatering, characterized in that it includes a composite filter belt and several insulating sheaths, and the composite filter belt is composed of a first polyester layer, a coarse particle adsorption layer, It consists of several conductive belts, a second polyester layer, a fine particle adsorption layer and a water absorption layer, the first polyester layer is located at the top of the composite filter belt, and the coarse particle adsorption layer is located at the bottom of the first polyester layer, The coarse particle adsorption layer is fixedly connected to the first polyester layer, any of the conductive bands is located at the bottom of the coarse particle adsorption layer, the conductive band is fixedly connected to the coarse particle adsorption layer, and the second polyester layer is located at the bottom of the coarse particle adsorption layer. The lower part of the conductive tape, the second polyester layer is fixedly connected to the conductive tape, the fine particle adsorption layer is located at the bottom of the second polyester layer, and the fine particle adsorption layer is fixedly connected to the second polyester layer, Described water-absorbing layer is positioned at the bottom of fine particle adsorption layer, and described water-absorbing layer is made up of several edge water-absorbing layers and integral water-absorbing layer, and any described edge water-absorbing layer is positioned at the side of composite filter belt, and described edge water-absorbing layer and composite filter The belt is fixedly connected, and the integral water-absorbing layer is located at the lower part of the fine-particle adsorbing layer. The integral water-absorbing layer and the fine-particle adsorbing layer are fixedly connected. Any of the insulating sheaths is located on one side of the edge water-absorbing layer. The sleeve and the composite filter belt are fixedly connected.

Furthermore, the first polyester layer is a polyester mesh structure, and adopts an X-shaped cross weaving method, which can make the sludge uniformly distributed on the surface of the filter belt in an irregular form before dewatering.

Further, the coarse particle adsorption layer is a nylon adsorption net or a fiber adsorption net.

Further, the number of the several conductive strips is 2, and the material is metal, and the 2 conductive strips are located in parallel on both sides of the lower part of the coarse particle adsorption layer.

Further, the second polyester layer is a polyester mesh structure, and adopts a criss-cross pattern, which can make the sludge distribute in arrays to the fine particles infiltrated through the coarse particle adsorption layer during the dehydration process. .

Further, this layer is different from the weaving method of the first polyester layer. The purpose is that during the sludge dehydration and infiltration process, different forms of polyester layers can drive impurities, particles or other fine particles to be evenly screened and distributed. Thus, while dehydrating and penetrating, the effect of layer-by-layer adsorption is achieved.

Further, the fine particle adsorption layer is a cotton adsorption net or a fiber adsorption net.

Further, the number of the several edge water-absorbing layers is 2, and its material is water-absorbing sponge or water-absorbing cotton cloth or water-absorbing fiber; the two edge water-absorbing layers are located in parallel on both sides of the composite filter belt 1, mainly during the dehydration process In the middle, the moisture is absorbed on the edge of each layer in the composite filter belt 1.

Further, the material of the overall water-absorbing layer is water-absorbing sponge, water-absorbing cotton cloth or water-absorbing fiber, which mainly absorbs water in the composite filter belt during the dehydration process.

Further, the number of the plurality of insulating sheaths is 2, and its material is a colloidal sheath, and each insulating sheath is wrapped on the side of the composite filter belt with an edge water-absorbing layer, and its cross-sectional area is concave. glyph.

The beneficial effect of the present invention is that: the first polyester layer 2 of the composite filter belt adopts a polyester mesh structure and is in an X-shaped cross weaving manner, which can make the sludge uniform in an irregular form before dehydration distributed on the surface of the filter belt.

In the process of dehydration, the composite filter belt is divided into two-layer filtration procedures, and the large particles in the sludge will be adsorbed by the coarse particle adsorption layer under the first polyester layer. This is the first filtration procedure; then some The fine particles will fall to the surface of the second polyester layer. This layer adopts a criss-cross weave pattern. This form can make the sludge distribute in arrays to the fine particles that penetrate through the coarse particle adsorption layer during the dehydration process, and then For the second filtration process, those fine particles will be adsorbed by the fine particle adsorption layer under the second polyester layer; the second polyester layer is different from the weaving method of the first polyester layer. In the process of dehydration and infiltration, different forms of polyester layers can drive impurities, particles or other fine particles to be evenly screened and distributed, so as to achieve layer-by-layer adsorption during dehydration and infiltration.

The water-absorbing layer at the bottom of the composite filter belt is composed of two edge water-absorbing layers and an overall water-absorbing layer. The two edge water-absorbing layers are located on both sides of the composite filter belt in parallel. The edges absorb moisture. The overall water-absorbing layer mainly absorbs moisture to the composite filter belt during the dehydration process. In addition, insulating sheaths are added to the exposed two sides of the entire composite filter belt, which has a certain protective effect on the staff. The composite filter belt is made of multi-layer cross composite weaving, and a double-layer adsorption layer is added, which makes the adsorption strength of micro particles extremely high, and has the functions of acid resistance, alkali resistance, wear resistance and high temperature resistance, and has a long service life. High stability, good water permeability, easy to flatten, long-term use will not appear discounted tearing phenomenon, high safety factor.

Description of drawings

Fig. 1 is a sectional front view of the present invention.

Fig. 2 is a schematic diagram of the layer-by-layer dismantling structure of the present invention.

Fig. 3 is a partially enlarged schematic view of the first polyester layer of the present invention.

Fig. 4 is a partially enlarged schematic view of the second polyester layer of the present invention.

Among them: 1. Composite filter belt 2. The first polyester layer 3. Coarse particle adsorption layer

4. Conductive tape 5. Second polyester layer 6. Fine particle adsorption layer

7. Water absorption layer 8. Edge water absorption layer 9. Overall water absorption layer

10. Insulation sheath

Detailed ways

The specific implementation manners of the present invention will be briefly described below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, an electro-osmotic sludge dewatering composite filter belt is characterized in that it includes a composite filter belt 1 and several insulating sheaths 10, and the composite filter belt 1 consists of a first A polyester layer 2, a coarse particle adsorption layer 3, several conductive tapes 4, a second polyester layer 5, a fine particle adsorption layer 6 and a water absorption layer 7, the first polyester layer 2 is located on the composite filter belt 1 The uppermost layer, the coarse particle adsorption layer 3 is located at the bottom of the first polyester layer 2, the coarse particle adsorption layer 3 is fixedly connected to the first polyester layer 2, and any of the conductive strips 4 is located in the coarse particle adsorption layer 3 The lower part of the conductive belt 4 is fixedly connected to the coarse particle adsorption layer 3, the second polyester layer 5 is located at the bottom of the conductive belt 4, and the second polyester layer 5 is fixedly connected to the conductive belt 4, so The fine particle adsorption layer 6 is located at the bottom of the second polyester layer 5, and the fine particle adsorption layer 6 is fixedly connected with the second polyester layer 5, and the water absorption layer 7 is located at the bottom of the fine particle adsorption layer 6. Water-absorbing layer 7 is made up of several edge water-absorbing layers 8 and integral water-absorbing layer 9, and any described edge water-absorbing layer 8 is positioned at the side of composite filter belt 1, and described edge water-absorbing layer 8 is fixedly connected with composite filter belt 1, and described The integral water-absorbing layer 9 is positioned at the bottom of the fine particle adsorption layer 6, and the integral water-absorbing layer 9 is fixedly connected to the fine particle adsorption layer 6, and any of the insulating sheaths 10 is positioned on one side of the edge water-absorbing layer 8, and the insulating sheath 10 is fixedly connected with composite filter belt 1. The first polyester layer 2 is a polyester mesh structure, and adopts an X-shaped cross weaving method, which allows the sludge to be evenly distributed on the surface of the filter belt in an irregular manner before dehydration. The coarse particle adsorption layer 3 is a nylon adsorption net or a fiber adsorption net. The number of the plurality of conductive strips 4 is two, and the material is metal, and the two conductive strips 4 are located in parallel on both sides of the lower part of the coarse particle adsorption layer 3 . The second polyester layer 5 is a polyester mesh structure, and adopts a criss-cross pattern, which can make the fine particles infiltrated through the coarse particle adsorption layer 3 in the sludge be distributed in an array during the dehydration process. ; This layer is different from the weaving mode of the first polyester layer 2, and its purpose is that during the dehydration and infiltration process of the sludge, the polyester layers of different forms can drive impurities, particles or other fine particles to be evenly screened and distributed, thereby At the same time of dehydration and penetration, it can achieve the effect of layer-by-layer adsorption. The fine particle adsorption layer 6 is a cotton adsorption net or a fiber adsorption net. The number of said several edge water-absorbing layers 8 is 2, and its material is water-absorbing sponge or water-absorbing cotton cloth or water-absorbing fiber; The two edge water-absorbing layers 8 are located in parallel on both sides of the composite filter belt 1, mainly in the process of dehydration In the middle, the moisture is absorbed on the edge of each layer in the composite filter belt 1. The overall water-absorbing layer 9 is made of water-absorbing sponge, water-absorbing cotton cloth or water-absorbing fiber, mainly for absorbing moisture to the composite filter belt 1 during the dehydration process. The number of the plurality of insulating sheaths 10 is 2, and its material is a colloidal sheath, and each insulating sheath 10 is wrapped on the side of the composite filter belt 1 with the edge water-absorbing layer 8, and its cross-sectional area is Concave shape.

Working method: The composite filter belt 1 is a belt composed of the first polyester layer 2, the coarse particle adsorption layer 3, several conductive belts 4, the second polyester layer 5, the fine particle adsorption layer 6 and the water absorption layer 7 Multi-layer composite filter belt with electro-osmotic sludge dewatering. First of all, it is necessary to place the sludge to be treated on the upper part of the first polyester layer 2, which adopts a polyester mesh structure and is in an X-shaped cross weave, which allows the sludge to be dehydrated according to different Regular forms are evenly distributed on the surface of the filter belt. Compared with water, sludge has a slight negative charge, but the sludge particles and the surrounding medium solution are electrically neutral as a whole. In order to balance these negative charges, the surface of the sludge particles must absorb the opposite charge in the medium solution. Charged cations. The negative charges on the surface of solid particles and the counterions in the surrounding medium they adsorb form the so-called electric double layer. Under the action of an electric field, the cations adsorbed on the surface of the sludge solid particles carry water and move to the cathode, forming an electro-osmosis phenomenon, and then the sludge is dehydrated through the conductive belt 4 .

During the dehydration process, the large particles in the sludge will be adsorbed by the coarse particle adsorption layer 3 under the first polyester layer 2, this time is the first filtration process; then some fine particles will fall to the second polyester layer On the surface of layer 5, this layer adopts a criss-cross weaving method, which can make the sludge distribute in arrays to the fine particles that penetrate through the coarse particle adsorption layer 3 during the dehydration process, and then perform the second filtration process, Those fine particles will be adsorbed by the fine particle adsorption layer 6 under the second polyester layer 5; Among them, different forms of polyester layers can drive impurities, particles or other fine particles to be evenly screened and distributed, so as to achieve layer-by-layer adsorption while dehydrating and penetrating.

A water-absorbing layer 7 is also attached to the bottom of the composite filter belt 1. This layer is composed of two edge water-absorbing layers 8 and an overall water-absorbing layer 9. The two edge water-absorbing layers 8 are located on both sides of the composite filter belt 1 in parallel, mainly During the dehydration process, moisture is absorbed on the edge of each layer in the composite filter belt 1 . The integral water-absorbing layer 9 mainly absorbs moisture to the composite filter belt 1 during the dehydration process. And the insulating sheath 10 is added on the exposed both sides of the whole composite filter belt 1, which plays a certain protective effect on the staff. The composite filter belt is made of multi-layer cross composite weaving, and a double-layer adsorption layer is added, which makes the adsorption strength of micro particles extremely high, and has the functions of acid resistance, alkali resistance, wear resistance and high temperature resistance, and has a long service life. High stability, good water permeability, easy to flatten, long-term use will not appear discounted tearing phenomenon, high safety factor.

An embodiment of the present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (8)

1. A composite filter belt for electroosmotic sludge dewatering, characterized in that: comprise a composite filter belt and several insulating sheaths, said composite filter belt is composed of the first polyester layer, a coarse particle adsorption layer, several conductive belts, The second polyester layer, fine particle adsorption layer and water absorption layer are composed, the first polyester layer is located at the uppermost layer of the composite filter belt, the coarse particle adsorption layer is located at the bottom of the first polyester layer, and the coarse particle adsorption The first polyester layer is fixedly connected with the first polyester layer, and the first polyester layer is a polyester mesh structure, and adopts an X-shaped cross weaving method, which can make the sludge uniform in an irregular form before dewatering Distributed on the surface of the filter belt, any of the conductive belts is located at the bottom of the coarse particle adsorption layer, the conductive belt and the coarse particle adsorption layer are fixedly connected, the coarse particle adsorption layer is a nylon adsorption network or a fiber adsorption network, and the first The dipolyester layer is located at the bottom of the conductive tape, the second polyester layer is fixedly connected with the conductive tape, the fine particle adsorption layer is located at the bottom of the second polyester layer, and the fine particle adsorption layer is connected with the second polyester layer. The layers are fixedly connected, and the water-absorbing layer is located at the bottom of the fine particle adsorption layer. The water-absorbing layer is composed of several edge water-absorbing layers and an overall water-absorbing layer. Any of the edge water-absorbing layers is located on one side of the composite filter belt. The edge The water-absorbing layer is fixedly connected to the composite filter belt, the overall water-absorbing layer is located at the bottom of the fine particle adsorption layer, the overall water-absorbing layer is fixedly connected to the fine particle adsorption layer, and any of the insulating sheaths is located on one side of the edge water-absorbing layer , the insulating sheath is fixedly connected to the composite filter belt. 2. A composite filter belt for electroosmotic sludge dewatering according to claim 1, characterized in that: the number of said several conductive belts is 2, and its material is metal, and the 2 conductive belts are located in parallel in the thick Both sides of the lower part of the particle adsorption layer. 3. A composite filter belt for electroosmotic sludge dewatering according to claim 1, characterized in that: the second polyester layer is a polyester mesh structure, and adopts a criss-cross weaving method, which can make During the dewatering process, the sludge distributes the fine particles infiltrated through the coarse particle adsorption layer in an array. 4. A composite filter belt for electroosmotic sludge dewatering according to claim 3, characterized in that: the second polyester layer is different from the weaving method of the first polyester layer, the purpose of which is to dehydrate the sludge During the infiltration process, different forms of polyester layers can drive impurities, particles or other fine particles to be evenly screened and distributed, so as to achieve layer-by-layer adsorption while dehydrating and infiltrating. 5. A composite filter belt for electroosmotic sludge dewatering according to claim 1, characterized in that: the fine particle adsorption layer is a cotton adsorption net or a fiber adsorption net. 6. A composite filter belt for electro-osmotic sludge dewatering according to claim 1, characterized in that: the number of said several edge water-absorbing layers is 2, and its material is water-absorbing sponge or water-absorbing cotton cloth or water-absorbing fiber; The two edge water-absorbing layers are located in parallel on both sides of the composite filter belt 1, mainly for absorbing water from the edges of each layer in the composite filter belt 1 during the dehydration process. 7. A composite filter belt for electro-osmotic sludge dewatering according to claim 1, characterized in that: the material of the integral water-absorbing layer is water-absorbing sponge or absorbent cotton or water-absorbing fiber, mainly for the composite filter belt in the dehydration process. The belt absorbs moisture. 8. A composite filter belt for electroosmotic sludge dewatering according to claim 1, characterized in that: the number of the plurality of insulating sheaths is 2, and the material is a colloidal sheath, and each insulating sheath The sleeve is wrapped on the side of the composite filter belt with the edge water-absorbing layer, and its cross-sectional area is concave.