CN210481181U - Exchange electrode electroosmosis sludge dewatering system based on voltage grading detection - Google Patents
Exchange electrode electroosmosis sludge dewatering system based on voltage grading detection Download PDFInfo
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Abstract
Exchange electrode electroosmosis sludge dewatering system based on voltage grading detection, including the support, the support is improved level and is provided with the platen, is provided with electroosmosis reactor, power, first voltmeter and second voltmeter on the platen, and inside top-down interval of electroosmosis reactor has set gradually upper carbon piece electrode, middle level copper sheet electrode and lower floor copper sheet electrode, and upper carbon piece electrode top is provided with and is used for driving the power drive arrangement that upper carbon piece electrode moved down along the electroosmosis reactor inner wall. The utility model adopts the exchange electrode type electroosmosis process to carry out deep dehydration on the sludge, can effectively reduce the water content of the sludge, can improve the problem of poor uniformity of the sludge after the traditional electroosmosis, and can directly carry out subsequent treatment on the treated sludge; the utility model discloses a mode of exchange electrode has played the improvement effect to copper sheet electrode corrosion problem.
Description
Technical Field
The utility model belongs to the technical field of sludge treatment, concretely relates to exchange electrode electroosmosis sludge dewatering system based on voltage classification detects.
Background
The sludge is a solid-liquid mixed substance containing pathogenic bacteria, organic matters, inorganic matters and toxic and harmful substances generated in the sewage treatment process. Due to the large sludge yield and high water content, secondary pollution can be caused if the sludge is not properly treated or disposed, and the health of land, human beings and livestock is harmed. In order to reduce the difficulty of sludge treatment disposal, sludge dewatering should be the primary treatment.
Most sewage treatment plants use mechanical dehydration, and the common mechanical dehydration method can only reduce the water content to 80 percent and can not meet the requirement of China on sludge treatment and disposal.
In view of the above, the deep sludge dewatering technology is a new way to dewater sludge. Electroosmosis technology has been applied to sludge dewatering as a technology having characteristics of environmental protection and stable dewatering effect. However, the electroosmosis technology usually stops dehydration after reaching the dehydration limit, and at the moment, the water content of the cathode and anode mud cakes is different by 20-50%, the uniformity is poor, the anode material is seriously corroded, and the defects become the bottleneck problem of the industrialized application of the electroosmosis dehydration technology.
Chinese patent document "an electroosmosis sludge dewatering machine" (publication No. CN 104961320A) discloses a sludge dewatering machine adopting electroosmosis technology, and the water content of the treated sludge is reduced by below 60%. However, the uniformity of the sludge cake treated by the technology is poor, the serious drying condition of the anode sludge cannot be improved, and the subsequent sludge treatment cannot be directly carried out.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a mud cake homogeneity after being convenient for operate, handle is good and can directly carry out the exchange electrode electroosmosis sludge dewatering system based on voltage classification detects.
In order to solve the technical problem, the utility model adopts the following technical scheme: an exchange electrode electroosmosis sludge dewatering system based on voltage grading detection comprises a bracket, a bedplate is horizontally arranged on the bracket, an electroosmosis reactor and a power supply are arranged on the bedplate, the device comprises a first voltmeter and a second voltmeter, wherein an upper layer carbon sheet electrode, a middle layer copper sheet electrode and a lower layer copper sheet electrode are sequentially arranged in an electroosmosis reactor from top to bottom at intervals, the middle layer copper sheet electrode and the lower layer copper sheet electrode are respectively provided with an upper permeable water permeable hole and a lower permeable water permeable hole, the upper layer carbon sheet electrode and the middle layer copper sheet electrode are both connected in the electroosmosis reactor in a sliding manner, the lower layer copper sheet electrode is fixedly arranged at the bottom of the electroosmosis reactor, sludge is respectively arranged between the upper layer carbon sheet electrode and the middle layer copper sheet electrode and between the middle layer copper sheet electrode and the lower layer copper sheet electrode, and a power driving device for driving the upper layer carbon sheet electrode to move downwards along the inner wall of;
the positive pole of power passes through first wire and second wire and is connected with the positive pole of first voltmeter and upper carbon piece electrode respectively, and the negative pole of power passes through the third wire and is connected with lower floor's copper sheet electrode, and middle level copper sheet electrode divide into two fourth wires through T type main branch electric wire connector and is connected with the negative pole of first voltmeter and the positive pole of second voltmeter simultaneously, and lower floor's copper sheet electrode is connected with the negative pole of second voltmeter through fifth wire.
The electroosmosis reactor comprises an outer cylinder body and an inner cylinder body which are coaxially arranged, the bottoms of the outer cylinder body and the inner cylinder body are horizontally provided with a connecting flange, the inner diameter of the connecting flange is equal to that of the inner cylinder body, an annular cavity is arranged between the outer cylinder body and the inner cylinder body, the top of the annular cavity is open, one side of the outer circumference of a middle-layer copper sheet electrode is connected with a corrugated plate which can stretch up and down, the horizontal section of the corrugated plate is arc-shaped, the arc angle of the corrugated plate is 10-30 degrees, the central line of the corrugated plate is coincided with the central line of the inner cylinder body, the outer wall of the corrugated plate is in sliding fit with the inner wall of the inner cylinder body, a guide hole which is through from inside to outside is arranged between the middle part and the lower part of the inner cylinder body along the vertical direction, a threading hole which, the circular holes which correspond to the inner barrel up and down are formed in the bedplate, the water collecting hopper which is located on the periphery of the circular holes is arranged on the lower surface of the bedplate, the bottom of the water collecting hopper is connected with a water guide pipe, the lower-layer copper sheet electrode is arranged above the circular holes in the upper surface of the bedplate, filter cloth and a sealing washer are sequentially arranged on the upper surface of the lower-layer copper sheet electrode from bottom to top, the lower surface of the connecting flange is in contact with the sealing washer, and the connecting flange is fixedly connected with the bedplate.
The power driving device comprises a pressure-bearing upper seat, a hydraulic push rod is vertically arranged on the pressure-bearing upper seat, and the lower end of the hydraulic push rod coaxially extends into the electroosmosis reactor from top to bottom.
An electronic scale is arranged below the water guide pipe, and a water storage container used for bearing the flowing water in the water guide pipe is arranged on the electronic scale.
A flow guide hole for communicating the water collecting hopper with the annular cavity is formed in the connecting flange;
the lower parts of the inner barrel and the outer barrel are correspondingly provided with mounting holes along the radial direction, thermometer probes extending into the inner barrel are mounted in the mounting holes, and corrosion-resistant sealing rings are arranged between the thermometer probes and the mounting holes.
By adopting the technical scheme, the dehydration method of the exchange electrode electroosmosis sludge dehydration system based on voltage classification detection comprises the following steps,
(1) preparing medicaments with corresponding concentration according to the proportion of the selected high-grade oxidant and water, and then uniformly mixing the medicaments with the sludge, wherein the selected high-grade oxidant is ammonium persulfate, potassium persulfate, sodium persulfate, ferrous activated persulfate or calcium peroxide;
(2) placing a corrugated plate in the inner cylinder, tightly attaching the corrugated plate to the inner wall of the inner cylinder, wherein the corrugated plate shields the guide hole, the corrugated plate is stretched up and down to be in the longest state, and then, sludge uniformly mixed with the medicament in the step (1) is loaded in the inner cylinder;
(3) when the sludge height is higher than the threading holes formed in the corrugated plates, the middle-layer copper sheet electrode is placed in the inner cylinder body, then the sludge is filled above the middle-layer copper sheet electrode, the middle-layer copper sheet electrode separates the sludge into upper-layer sludge and lower-layer sludge, and then the upper-layer copper sheet electrode is placed on the upper-layer sludge;
(4) the upper layer carbon sheet electrode, the middle layer copper sheet electrode and the lower layer copper sheet electrode are correspondingly connected with a power supply, a first voltmeter and a second voltmeter;
(5) arranging the lower end of a hydraulic push rod of the power driving device in the inner cylinder body to be in contact with the upper-layer carbon sheet electrode;
(6) electroosmotic dehydration: the power supply is turned on, the upper carbon sheet electrode, the middle copper sheet electrode and the lower copper sheet electrode are electrified to start to carry out electroosmosis on the upper sludge and the lower sludge in the inner cylinder, electroosmosis voltages of a cathode and an anode are displayed on the first voltmeter and the second voltmeter, the electrodes of the upper carbon sheet electrode and the lower copper sheet electrode are changed along with certain frequency and time, wires connected with the first voltmeter and the second voltmeter are changed accordingly, voltage grading detection is carried out, meanwhile, the hydraulic push rod drives the upper carbon sheet electrode to move downwards along the inner cylinder to extrude the upper sludge, pressure is transmitted to the middle copper sheet electrode, the middle copper sheet electrode presses the lower sludge, the corrugated plate is compressed simultaneously, water separated from the upper sludge flows into the lower sludge through water permeable holes in the middle copper sheet electrode, and water separated from the upper sludge and the lower sludge under the electroosmosis action and the pressure action sequentially penetrates through the filter cloth, Discharging the lower-layer copper sheet electrode into a water collecting hopper, and finally flowing into a water storage container and weighing by an electronic scale;
(7) collecting mud cakes; after electroosmosis dehydration is finished, a power supply is turned off, the power driving device is taken down, the upper carbon sheet electrode is taken out, the connecting bolt between the connecting flange and the bedplate is dismounted, the inner cylinder and the outer cylinder are dismounted, the fourth lead is dismounted, the upper sludge and the lower sludge are taken out to be compressed into two layers of mud cakes, the corrugated plates and the middle copper sheet electrode are taken out, and the water content of the upper mud cake and the lower mud cake is measured in a layered mode.
The specific connection mode of the step (4) is that the positive pole of the power supply is respectively connected with the positive pole of the first voltmeter and the upper carbon sheet electrode through the first lead and the second lead, the negative pole of the power supply is connected with the lower copper sheet electrode through the third lead, the middle copper sheet electrode is divided into two fourth leads through the T-shaped main branch wire connector and is simultaneously connected with the negative pole of the first voltmeter and the positive pole of the second voltmeter, and the lower copper sheet electrode is connected with the negative pole of the second voltmeter through the fifth lead.
In the step (5), the electrodes of the upper layer carbon sheet electrode and the lower layer copper sheet electrode are changed along with certain frequency and time, the wires connected with the first voltmeter and the second voltmeter are changed, and the specific mode of carrying out voltage grading detection is as follows: the upper-layer carbon sheet electrode and the middle-layer copper sheet electrode are respectively connected with the anode and the cathode of the first voltmeter, the middle-layer copper sheet electrode and the lower-layer copper sheet electrode are respectively connected with the anode and the cathode of the second voltmeter, when the electrodes are exchanged, the anode and the cathode on the first voltmeter and the cathode on the second voltmeter are simultaneously exchanged, and therefore the first voltmeter and the second voltmeter can still keep detecting the voltage of the upper-layer sludge and the lower-layer sludge after the electrodes are exchanged.
In the dehydration process in the step (5), part of water seeps out through a gap between the outer wall of the corrugated plate and the inner wall of the inner cylinder body, flows into the annular cavity through the guide holes, and finally flows into the water collecting hopper through the guide holes at the bottom of the annular cavity.
To sum up, the utility model discloses following technological effect has:
(1) the utility model adopts the exchange electrode type electroosmosis process to carry out deep dehydration on the sludge, can effectively reduce the water content of the sludge, can improve the problem of poor uniformity of the sludge after the traditional electroosmosis, and can directly carry out subsequent treatment on the treated sludge;
(2) the utility model adopts the mode of exchanging the electrodes to improve the corrosion problem of the copper sheet electrodes;
(3) the utility model adopts advanced oxidation technology, and can effectively improve the release amount of sludge combined water by only adding a small amount of advanced oxidant, thereby improving the sludge dewatering efficiency;
(4) the telescopic corrugated plate used by the utility model can tightly block the guide hole arranged on the side surface of the inner cylinder body, the threading hole arranged on the corrugated plate can pass through the fourth wire to be directly connected with the middle-layer copper sheet electrode, thereby avoiding the direct contact between the sludge and the fourth wire to corrode the fourth wire, and when the middle-layer copper sheet electrode moves downwards, the fourth wire moves downwards along the guide hole, thereby avoiding the bending damage of the fourth wire; in addition, the corrugated plate prevents sludge from entering the guide holes and only allows water to flow out of the guide holes;
(5) the lower copper sheet electrode of the utility model is provided with a plurality of water permeable holes and is covered with a layer of filter cloth, so that water and generated gas can be conveniently discharged, and sludge is intercepted;
(6) the utility model discloses make upper carbon piece electrode and lower floor copper sheet electrode get the electricity condition exchange (upper carbon piece electrode becomes the negative pole by the positive pole, lower floor copper sheet electrode becomes the positive pole by the negative pole) through positive negative pole converter in the electroosmosis process, traditional electroosmosis technique can't avoid to the corruption of anode material, and corrosion-resistant material is with high costs, use exchange electrode formula electroosmosis can effectively improve the anodic corrosion condition, and along with the electrode exchange, the moisture in the negative pole mud migrates to the positive pole, has improved the homogeneity of mud cake;
(7) the pressure-bearing upper seat of the utility model is used for connecting the hydraulic push rod, providing hydraulic power and effectively enhancing the electroosmosis sludge dewatering efficiency;
(8) the electronic scale, the thermometer probe, the first voltmeter and the second voltmeter are all connected with the computer, voltage, water removal amount and temperature data are automatically recorded, when the dehydration amount reaches a set value, the dehydration limit is automatically considered to be reached, and the power supply is turned off to stop electroosmosis;
(9) the thermometer probe arranged in the utility model realizes the whole temperature monitoring of electroosmosis;
(10) the utility model provides an alternation electrode formula electroosmosis sludge dewatering system and method based on voltage detects in grades can realize that the negative and positive poles of the earth cake moisture content is completely even after the electroosmosis treatment.
Drawings
Fig. 1 is a schematic structural view of the whole of the present invention;
FIG. 2 is a vertical cross-sectional view of the electro-osmotic reactor of FIG. 1;
FIG. 3 is a schematic diagram of the wiring among the middle power supply, the first voltmeter, the second voltmeter, the upper carbon sheet electrode, the middle copper sheet electrode and the lower copper sheet electrode;
FIG. 4 is a diagram illustrating the results of different modes of electroosmosis techniques on the influence of sludge water content;
FIG. 5 is a diagram illustrating the results of different modes of electroosmosis combined with advanced oxidation to study the effect of sludge water content;
FIG. 6 is a schematic diagram illustrating the results of investigation of the influence of different modes of electroosmosis technology combined with advanced oxidation technology and voltage classification detection on the water content of sludge.
Detailed Description
As shown in figures 1, 2 and 3, the exchange electrode electroosmosis sludge dewatering system based on voltage grading detection of the utility model comprises a support 1, a platen 2 is horizontally arranged on the support 1, an electroosmosis reactor 3, a power supply 4, a first voltmeter 5 and a second voltmeter 6 are arranged on the platen 2, an upper carbon sheet electrode 7, a middle copper sheet electrode 8 and a lower copper sheet electrode 9 are sequentially arranged in the electroosmosis reactor 3 from top to bottom at intervals, permeable holes are respectively arranged on the middle copper sheet electrode 8 and the lower copper sheet electrode 9, the upper carbon sheet electrode 7 and the middle copper sheet electrode 8 are both connected in the electroosmosis reactor 3 in a sliding way, the lower copper sheet electrode 9 is fixedly arranged at the bottom of the electroosmosis reactor 3, sludge is respectively arranged between the upper carbon sheet electrode 7 and the middle copper sheet electrode 8 and between the middle copper sheet electrode 8 and the lower copper sheet electrode 9, a power driving device for driving the upper carbon sheet electrode 7 to move downwards along the inner wall of the electroosmosis reactor 3 is arranged above the upper carbon sheet electrode 7;
the positive pole of power 4 is connected with the positive pole of first voltmeter 5 and upper carbon piece electrode 7 respectively through first wire 10 and second wire 11, and the negative pole of power 4 is connected with lower floor's copper sheet electrode 9 through third wire 12, and middle level copper sheet electrode 8 is divided into two fourth wires 13 through T type main branch wire connector and is connected with the negative pole of first voltmeter 5 and the positive pole of second voltmeter 6 simultaneously, and lower floor's copper sheet electrode 9 is connected with the negative pole of second voltmeter 6 through fifth wire 14.
The electroosmosis reactor 3 comprises an outer cylinder body 15 and an inner cylinder body 16 which are coaxially arranged, a connecting flange 17 is horizontally arranged at the bottom of the outer cylinder body 15 and the bottom of the inner cylinder body 16, the inner diameter of the connecting flange 17 is equal to that of the inner cylinder body 16, an annular cavity 18 is arranged between the outer cylinder body 15 and the inner cylinder body 16, the top of the annular cavity 18 is open, one side of the outer circumference of a middle layer copper sheet electrode 8 is connected with a corrugated plate 19 which can stretch up and down, the horizontal section of the corrugated plate 19 is arc-shaped, the arc angle of the corrugated plate 19 is 10-30 degrees, the central line of the corrugated plate 19 is superposed with the central line of the inner cylinder body 16, the outer wall of the corrugated plate 19 is in sliding fit with the inner wall of the inner cylinder body 16, a guide hole 20 which is through from inside to outside is arranged between the middle part and, the upper surface of the lower copper sheet electrode 9 is sequentially provided with a filter cloth 24 and a sealing washer 25 from bottom to top, the lower surface of the connecting flange 17 is in contact with the sealing washer 25, and the connecting flange 17 is fixedly connected with the bedplate 2 into a whole through a plurality of connecting bolts 26 along the circumferential direction.
The power driving device comprises a pressure-bearing upper seat 27, a hydraulic push rod 28 is vertically arranged on the pressure-bearing upper seat 27, and the lower end of the hydraulic push rod 28 coaxially extends into the electroosmosis reactor 3 from top to bottom.
An electronic scale 29 is arranged below the water guide pipe 23, and a water storage container 30 for receiving the flowing water in the water guide pipe 23 is arranged on the electronic scale 29.
A diversion hole 31 for communicating the water collecting hopper 22 with the annular cavity 18 is formed in the connecting flange 17;
the lower parts of the inner cylinder 16 and the outer cylinder 15 are correspondingly provided with mounting holes along the radial direction, a thermometer probe 32 extending into the inner cylinder 16 is arranged in the mounting holes, and a corrosion-resistant sealing ring is arranged between the thermometer probe 32 and the mounting holes.
The dehydration method of the exchange electrode electroosmosis sludge dehydration system based on the voltage grading detection comprises the following steps,
(1) preparing medicaments with corresponding concentration according to the proportion of the selected high-grade oxidant and water, and then uniformly mixing the medicaments with the sludge, wherein the selected high-grade oxidant is ammonium persulfate, potassium persulfate, sodium persulfate, ferrous activated persulfate or calcium peroxide;
(2) placing a corrugated plate 19 in the inner cylinder 16, tightly attaching the corrugated plate 19 to the inner wall of the inner cylinder 16, wherein the corrugated plate 19 shields the guide hole 20, the corrugated plate 19 is vertically stretched to be in the longest state, and then, sludge uniformly mixed with the medicament in the step (1) is filled in the inner cylinder 16;
(3) when the sludge height is higher than the threading holes 21 formed in the corrugated plate 19, the middle-layer copper sheet electrode 8 is placed in the inner cylinder 16, then the sludge is filled above the middle-layer copper sheet electrode 8, the sludge is separated into upper-layer sludge and lower-layer sludge by the middle-layer copper sheet electrode 8, and then the upper-layer copper sheet electrode is placed on the upper-layer sludge;
(4) the upper layer carbon sheet electrode 7, the middle layer copper sheet electrode 8 and the lower layer copper sheet electrode 9 are correspondingly connected with the power supply 4, the first voltmeter 5 and the second voltmeter 6;
(5) the lower end of a hydraulic push rod 28 of the power driving device is arranged in the inner cylinder 16 and is contacted with the upper carbon sheet electrode 7;
(6) electroosmotic dehydration: the power supply 4 is turned on, the upper layer carbon sheet electrode 7, the middle layer copper sheet electrode 8 and the lower layer copper sheet electrode 9 are electrified to start to carry out electroosmosis on the upper layer sludge and the lower layer sludge in the inner cylinder 16, electroosmosis voltages of a cathode and an anode are displayed on the first voltmeter 5 and the second voltmeter 6, the electrodes of the upper layer carbon sheet electrode 7 and the lower layer copper sheet electrode 9 are changed along with certain frequency and time, leads connected with the first voltmeter 5 and the second voltmeter 6 are changed accordingly to carry out voltage grading detection, meanwhile, the hydraulic push rod 28 drives the upper layer carbon sheet electrode 7 to move downwards along the inner cylinder 16 to extrude the upper layer sludge, pressure is transmitted to the middle layer copper sheet electrode 8, the middle layer copper sheet electrode 8 presses the lower layer sludge, the corrugated plate 19 is also compressed at the same time, water separated from the upper layer sludge flows into the lower layer sludge through water permeable holes in the middle layer copper sheet electrode 8, and water separated from the upper layer sludge and the lower layer sludge sequentially penetrates through the filter cloth 24, the, The lower-layer copper sheet electrode 9 is discharged into the water collecting hopper 22, and finally flows into the water storage container 30 and is weighed by an electronic scale 29;
(7) collecting mud cakes; after electroosmosis dehydration is finished, the power supply 4 is turned off, the power driving device is taken down, the upper carbon sheet electrode 7 is taken out, the connecting bolt 26 between the connecting flange 17 and the bedplate 2 is detached, the inner cylinder 16 and the outer cylinder 15 are taken down, the fourth lead 13 is detached, two layers of mud cakes formed by compressing upper-layer mud and lower-layer mud are taken out, the corrugated plate 19 and the middle-layer copper sheet electrode 8 are taken out, and the moisture content is measured in a layering mode on the upper-layer mud cakes and the lower-layer mud cakes.
The specific connection mode of the step (4) is that the anode of the power supply 4 is respectively connected with the anode of the first voltmeter 5 and the upper carbon sheet electrode 7 through a first lead 10 and a second lead 11, the cathode of the power supply 4 is connected with the lower copper sheet electrode 9 through a third lead 12, the middle copper sheet electrode 8 is divided into two fourth leads 13 through a T-shaped main branch wire connector and is simultaneously connected with the cathode of the first voltmeter 5 and the anode of the second voltmeter 6, and the lower copper sheet electrode 9 is connected with the cathode of the second voltmeter 6 through a fifth lead 14.
In the step (5), the upper layer carbon sheet electrode 7 and the lower layer copper sheet electrode 9 change electrodes along with a certain frequency and time, the wires connected with the first voltmeter 5 and the second voltmeter 6 are also changed, and the specific mode of carrying out voltage grading detection is as follows: the upper-layer carbon sheet electrode 7 and the middle-layer copper sheet electrode 8 are respectively connected with the anode and the cathode of the first voltmeter 5, the middle-layer copper sheet electrode 8 and the lower-layer copper sheet electrode 9 are respectively connected with the anode and the cathode of the second voltmeter 6, when the electrodes are exchanged, the anodes and the cathodes of the first voltmeter 5 and the second voltmeter 6 are simultaneously exchanged, so that the first voltmeter 5 and the second voltmeter 6 can still detect the voltage of the upper-layer sludge and the lower-layer sludge after the electrodes are exchanged.
In the dewatering process in the step (5), part of water seeps out through a gap between the outer wall of the corrugated plate 19 and the inner wall of the inner cylinder 16, flows into the annular cavity 18 through the guide hole 20, and finally flows into the water collecting hopper 22 through the guide hole 31 at the bottom of the annular cavity 18.
The following three specific examples were used to analyze the decrease in the water content of the sludge. Example 1 is to explore the influence of different modes of electroosmosis technology on the water content of sludge; example 2 is to explore the influence of different modes of electroosmosis technology combined with advanced oxidation technology on the water content of sludge; example 3 is to explore the influence of different modes of electroosmosis technology combined with advanced oxidation technology and voltage classification detection on the water content of sludge.
Example 1
An exchange electrode type electroosmosis sludge dewatering method based on voltage grading detection is characterized in that two groups of experiments are carried out for comparison, the first group adopts a traditional electroosmosis technology, the second group adopts an exchange electrode type electroosmosis technology, and other conditions are consistent. The results of both sets of experiments are shown in FIG. 4.
Example 2
An exchange electrode type electroosmosis sludge dewatering method based on voltage grading detection is characterized in that three groups of experiments are carried out for comparison, the first group adopts a traditional electroosmosis technology, the second group adopts an exchange electrode type electroosmosis technology to combine with an ammonium persulfate high-grade oxidant, the third group adopts an exchange electrode type electroosmosis technology to combine with a ferrous activated ammonium persulfate oxidant, and other conditions are consistent. The results of both sets of experiments are shown in FIG. 5.
Example 3
An exchange electrode type electroosmosis sludge dewatering method based on voltage grading detection is characterized in that two groups of experiments are carried out for comparison, the first group adopts a traditional electroosmosis technology, the second group adopts an exchange electrode type electroosmosis technology, ammonium persulfate high-grade oxidant is combined, a voltage grading detection system is adopted, and other conditions are consistent. The results of both sets of experiments are shown in FIG. 6.
From the three examples above, it is clear that the second group in example 3 is the most effective in dewatering. The good effect of sludge dewatering by adopting the exchange electrode type electroosmosis technology combined with the ammonium persulfate high-grade oxidant and adopting voltage classification is also proved.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (5)
1. Exchange electrode electroosmosis sludge dewatering system based on voltage classification detects, its characterized in that: the device comprises a support, wherein a bedplate is horizontally arranged on the support, an electroosmosis reactor, a power supply, a first voltmeter and a second voltmeter are arranged on the bedplate, an upper-layer carbon sheet electrode, a middle-layer copper sheet electrode and a lower-layer copper sheet electrode are sequentially arranged in the electroosmosis reactor from top to bottom at intervals, the middle-layer copper sheet electrode and the lower-layer copper sheet electrode are respectively provided with a vertically permeable water permeable hole, the upper-layer carbon sheet electrode and the middle-layer copper sheet electrode are respectively connected in the electroosmosis reactor in a sliding manner, the lower-layer copper sheet electrode is fixedly arranged at the bottom of the electroosmosis reactor, sludge is respectively arranged between the upper-layer carbon sheet electrode and the middle-layer copper sheet electrode and between the middle-layer copper sheet electrode and the lower-layer copper sheet electrode, and a power driving device for driving the;
the positive pole of power passes through first wire and second wire and is connected with the positive pole of first voltmeter and upper carbon piece electrode respectively, and the negative pole of power passes through the third wire and is connected with lower floor's copper sheet electrode, and middle level copper sheet electrode divide into two fourth wires through T type main branch electric wire connector and is connected with the negative pole of first voltmeter and the positive pole of second voltmeter simultaneously, and lower floor's copper sheet electrode is connected with the negative pole of second voltmeter through fifth wire.
2. The exchange electrode electro-osmosis sludge dewatering system based on voltage grading detection according to claim 1, characterized in that: the electroosmosis reactor comprises an outer cylinder body and an inner cylinder body which are coaxially arranged, the bottoms of the outer cylinder body and the inner cylinder body are horizontally provided with a connecting flange, the inner diameter of the connecting flange is equal to that of the inner cylinder body, an annular cavity is arranged between the outer cylinder body and the inner cylinder body, the top of the annular cavity is open, one side of the outer circumference of a middle-layer copper sheet electrode is connected with a corrugated plate which can stretch up and down, the horizontal section of the corrugated plate is arc-shaped, the arc angle of the corrugated plate is 10-30 degrees, the central line of the corrugated plate is coincided with the central line of the inner cylinder body, the outer wall of the corrugated plate is in sliding fit with the inner wall of the inner cylinder body, a guide hole which is through from inside to outside is arranged between the middle part and the lower part of the inner cylinder body along the vertical direction, a threading hole which, the circular holes which correspond to the inner barrel up and down are formed in the bedplate, the water collecting hopper which is located on the periphery of the circular holes is arranged on the lower surface of the bedplate, the bottom of the water collecting hopper is connected with a water guide pipe, the lower-layer copper sheet electrode is arranged above the circular holes in the upper surface of the bedplate, filter cloth and a sealing washer are sequentially arranged on the upper surface of the lower-layer copper sheet electrode from bottom to top, the lower surface of the connecting flange is in contact with the sealing washer, and the connecting flange is fixedly connected with the bedplate.
3. The exchange electrode electro-osmosis sludge dewatering system based on voltage grading detection according to claim 1, characterized in that: the power driving device comprises a pressure-bearing upper seat, a hydraulic push rod is vertically arranged on the pressure-bearing upper seat, and the lower end of the hydraulic push rod coaxially extends into the electroosmosis reactor from top to bottom.
4. The exchange electrode electro-osmosis sludge dewatering system based on voltage grading detection according to claim 2, characterized in that: an electronic scale is arranged below the water guide pipe, and a water storage container used for bearing the flowing water in the water guide pipe is arranged on the electronic scale.
5. The exchange electrode electro-osmosis sludge dewatering system based on voltage grading detection according to claim 2, characterized in that: a flow guide hole for communicating the water collecting hopper with the annular cavity is formed in the connecting flange;
the lower parts of the inner barrel and the outer barrel are correspondingly provided with mounting holes along the radial direction, thermometer probes extending into the inner barrel are mounted in the mounting holes, and corrosion-resistant sealing rings are arranged between the thermometer probes and the mounting holes.
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| CN110240388A (en) * | 2019-06-06 | 2019-09-17 | 河南工程学院 | Exchange electrode electro-osmosis sludge dewatering system and method based on voltage hierarchical detection |
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| CN110240388A (en) * | 2019-06-06 | 2019-09-17 | 河南工程学院 | Exchange electrode electro-osmosis sludge dewatering system and method based on voltage hierarchical detection |
| CN110240388B (en) * | 2019-06-06 | 2023-09-12 | 河南工程学院 | Exchange electrode electroosmosis sludge dewatering system and method based on voltage grading detection |
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