CN113213724A - Silt solidification and dehydration assembly type structure based on horizontal electroosmosis method and construction method thereof - Google Patents
Silt solidification and dehydration assembly type structure based on horizontal electroosmosis method and construction method thereof Download PDFInfo
- Publication number
- CN113213724A CN113213724A CN202110479327.1A CN202110479327A CN113213724A CN 113213724 A CN113213724 A CN 113213724A CN 202110479327 A CN202110479327 A CN 202110479327A CN 113213724 A CN113213724 A CN 113213724A
- Authority
- CN
- China
- Prior art keywords
- drainage
- electroosmosis
- layer
- horizontal
- connecting structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005370 electroosmosis Methods 0.000 title claims abstract description 97
- 238000007711 solidification Methods 0.000 title claims abstract description 32
- 230000008023 solidification Effects 0.000 title claims abstract description 32
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 31
- 230000018044 dehydration Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 title abstract description 12
- 239000010802 sludge Substances 0.000 claims abstract description 81
- 239000004033 plastic Substances 0.000 claims description 65
- 229920003023 plastic Polymers 0.000 claims description 65
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 60
- 229910052799 carbon Inorganic materials 0.000 claims description 30
- 229910002804 graphite Inorganic materials 0.000 claims description 30
- 239000010439 graphite Substances 0.000 claims description 30
- 229910001369 Brass Inorganic materials 0.000 claims description 22
- 239000010951 brass Substances 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000002023 wood Substances 0.000 claims description 14
- 238000005086 pumping Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 82
- 239000002184 metal Substances 0.000 description 6
- 230000005684 electric field Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a sludge solidification and dehydration assembled structure based on a horizontal electroosmosis method and a construction method thereof, and the sludge solidification and dehydration assembled structure comprises a top anode layer (7), one or more middle variable-polarity drainage layers (29) and a bottom cathode drainage layer (30) which are sequentially arranged in a sludge tank (1) from top to bottom, wherein the layers are separated by sludge to be solidified, electroosmosis drainage systems (2) are respectively arranged on the middle variable-polarity drainage layer (29) and the bottom cathode drainage layer (30), and the electroosmosis drainage systems (2) are externally connected with a direct current power supply (3). Compared with the traditional vertical electroosmosis method, the invention has high dehydration efficiency, can realize on-site rapid construction and assembly, and can be laid in a large area in a sludge storage yard, thereby being more suitable for treating a larger amount of dredged sludge.
Description
Technical Field
The invention relates to the field of land, river and lake solidification and dehydration engineering, in particular to a sludge solidification and dehydration assembly type structure based on a horizontal electroosmosis method and a construction method thereof.
Background
At present, the modes for solidifying and dehydrating the sludge mainly comprise natural airing, mechanical dehydration, chemical dehydration, electroosmotic drainage and the like. The natural drying needs a large amount of stacking fields, the depth of the sludge which can be treated is limited, and the sludge on the surface layer forms a crust layer after drying and shrinking to block the evaporation of the water in the sludge on the lower part. The mechanical dehydration adopts a plate frame filter press, a horizontal screw centrifuge and the like. Pumping the sludge into a filter-pressing tank, and extruding and removing water in the sludge by using mechanical pressure. The mechanical dehydration has the advantages of high dehydration efficiency, small water content of the mud cake after filter pressing and the like, but the mechanical purchase and maintenance cost is high. The chemical dehydration is to put proper curing agent into the dredged sludge, and the curing agent put into the sludge is not organic or inorganic and is difficult to realize high efficiency, no toxicity and low cost under the level of the existing material science. The electroosmosis drainage method is usually used for reinforcing drainage by using a soft foundation and treating a foundation of dredged land, under a straight electric field, water in sludge can flow from an anode to a cathode under the driving of electric field force, and the water in the sludge can be quickly drained only by arranging a drainage channel at the cathode. However, the existing electroosmosis method has the defects of complicated equipment installation, serious anode corrosion during electroosmosis, high power consumption, rapid reduction of electroosmosis current caused by separation of an electrode and a soil body after the soil body cracks at the later stage of electroosmosis and the like, so that the electroosmosis drainage method is limited to a certain degree.
In order to overcome the difficulty that the cracking of the sludge after dehydration affects the efficiency of the electroosmosis method, the electroosmosis method (horizontal electroosmosis method) of arranging electrodes horizontally is adopted. However, the existing horizontal electroosmosis technology is complicated in steps and requires overlapping of a frame, a vertical electrode and a drain plate when being installed in a large area.
At present, the vertical electroosmosis method is mostly adopted in the existing construction. A vertical electrode rod is typically inserted into the sludge and connected to the anode and cathode, respectively. But the electroosmosis effect is not very good, on one hand, the electroosmosis is not uniform and not sufficient, on the other hand, the sludge is cracked after a period of electroosmosis to cause separation from the electrode bar, and the dehydration efficiency is reduced. Meanwhile, the electroosmosis range of the vertical electrode rod is small, so that multiple groups of devices are needed, and the leads are mixed.
Disclosure of Invention
In view of the shortcomings of the prior art, a first object of the present invention is to provide a sludge solidification and dewatering fabricated structure based on horizontal electroosmosis. Compared with the traditional vertical electroosmosis method, the invention has high dehydration efficiency, can realize on-site rapid construction and assembly, and can be laid in a large area in a sludge storage yard, thereby being more suitable for treating a larger amount of dredged sludge.
In order to solve the technical problems, the invention is realized by the following technical scheme:
silt solidification dehydration assembled structure based on horizontal electroosmosis method, its characterized in that: including top anode layer, one deck or multilayer middle part variable polarity drainage layer and the bottom negative pole drainage layer that from top to bottom sets gradually in the silt pond, separate by the silt that needs the solidification between the layer, all set up the electric osmosis drainage system on middle part variable polarity drainage layer and the bottom negative pole drainage layer, the external DC power supply of electric osmosis drainage system.
Further: the electroosmosis drainage system comprises a plurality of conductive drainage units and a connecting structure, wherein the conductive drainage units are provided with a plurality of conductive plastic drainage plates, the conductive plastic drainage plates are connected with the connecting structure, and drainage hoses are inserted in the connecting structure.
Further: the top anode layer of the top in the sludge pond is composed of a plurality of first graphite carbon cloths, the plurality of first graphite carbon cloths are laid side by side, a positive electrode wire is connected to the plurality of first graphite carbon cloths, and the positive electrode wire is connected with an external direct-current power supply.
Further: the conductive plastic drainage plate comprises a harmonica-shaped plastic core plate, and the upper part and the lower part of the harmonica-shaped plastic core plate are sequentially bonded with the inverted filter layer and the second graphite carbon cloth.
Further: the end parts of the conductive plastic drainage plates of two adjacent conductive drainage units on the electroosmosis drainage system are connected through drainage plate interfaces, first wood screws penetrate through the two sides of the drainage plate interfaces from top to bottom, and the conductive plastic drainage plates are fixed by the first wood screws.
Further: the connection structure includes horizontal connection structure and vertical connection structure, all sets up the brass wire in horizontal connection structure and the vertical connection structure, and the brass wire is connected with outside direct current power supply, electrically conductive drainage unit comprises single horizontal connection structure and the electrically conductive plastics drain bar of polylith that corresponds connection in horizontal connection structure both sides, electrically conductive plastics drain bar sets up the electrode, and the brass wire in electrode and the horizontal connection structure meets.
Further: the drainage hose is inserted into the horizontal connecting structure and the vertical connecting structure and is externally connected with a vacuum pump, the electroosmosis drainage system is composed of a plurality of horizontal guide pipes connected with the front parts of the conductive drainage units, brass wires are arranged in the horizontal guide pipes, pipe bodies of the horizontal guide pipes are connected with the vertical connecting structure, and the tail ends of the connecting structures of the conductive drainage units are blocked for plugging.
Further: the horizontal connecting structure is provided with an upper plate and a lower plate which are correspondingly arranged, a plurality of conductive plastic drainage plates are correspondingly connected between the upper plate and the lower plate, and the upper plate and the lower plate are fixedly connected with the conductive plastic drainage plates through second wood screws.
A second object of the present invention is to provide a construction method of a horizontal electroosmosis-based sludge solidification and dehydration fabricated structure, which is characterized in that the horizontal electroosmosis-based sludge solidification and dehydration fabricated structure is arranged in a sludge tank, and the following steps are performed:
s1, adopting a top-down electroosmosis sequence during electroosmosis, wherein the top anode layer is used as an anode and externally connected with a direct current power supply, the first electroosmosis drainage system of the middle variable-polarity drainage layer below the top anode layer is used as a cathode and externally connected with the direct current power supply, and at the moment, a drainage hose of the first electroosmosis drainage system is externally connected with a vacuum pump for pumping water;
s2, after electroosmosis for a period of time, converting the cathode of the electroosmosis drainage system of the first layer into the cathode of the electroosmosis drainage system serving as an anode externally connected with a direct current power supply, performing electroosmosis by using the electroosmosis drainage system of the second layer below as the cathode externally connected with the direct current power supply, and externally connecting a drainage hose of the electroosmosis drainage system of the second layer with a vacuum pump for pumping water; therefore, the middle part polarity-variable drainage layer firstly drains for the cathode and then becomes the anode until the bottom cathode drainage layer is used as the last cathode for drainage, thereby realizing the multi-layer electroosmotic drainage from top to bottom in sequence.
Further: the sludge solidification and dehydration fabricated structure based on the horizontal electroosmosis method is constructed in the following way:
s01, assembling the conductive plastic drainage plate: sequentially bonding a reverse filter layer and second graphite carbon cloth above and below the harmonica-shaped plastic core plate;
s02, assembling the conductive drainage unit: fixedly arranging brass wires on an upper plate of the horizontal connecting structure, connecting a plurality of conductive plastic drainage plates to two sides of the upper plate and the lower plate of the horizontal connecting structure through second wood screws, and penetrating drainage hoses in the middle of the upper plate and the lower plate;
s03, assembling the electroosmotic drainage system of the middle variable-polarity drainage layer and the bottom cathode drainage layer: connecting the end parts of a plurality of conductive drainage units with the same horizontal guide pipe, plugging the other end of the connecting structure of the conductive drainage units by a plug, connecting a vertical connecting structure on the pipe body of the horizontal guide pipe, extending brass wires of the conductive drainage units into the horizontal guide pipe and the vertical connecting structure, connecting a direct current power supply outwards through the vertical connecting structure, arranging drainage hoses in the horizontal guide pipe and the vertical connecting structure, and communicating the conductive drainage units, the horizontal guide pipe and the drainage hoses in the vertical connecting structure;
s04, assembling a top anode layer: lay polylith first graphite carbon cloth side by side to connect the positive pole wire with polylith first graphite carbon cloth, anodal wire structure is outwards switched in DC power supply.
S05, sequentially paving a bottom cathode drainage layer, a middle variable-polarity drainage layer and a top anode layer in the sludge tank from bottom to top, paving the bottom cathode drainage layer in the sludge tank, pouring a first layer of sludge, paving a middle variable-polarity drainage layer on the first layer of sludge, pouring a second layer of sludge on the middle variable-polarity drainage layer, and arranging the bottom cathode drainage layer and the middle variable-polarity drainage layer until the top anode layer is paved according to the sequence until the vertical connection structure of the electroosmosis drainage system is close to the tank wall of the sludge tank.
Compared with the prior art, the invention has the following advantages and beneficial effects:
compared with the existing sludge solidification and dehydration, the sludge solidification and dehydration method can be quickly put into use, and the preparation time is shortened. In addition, the traditional plastic drainage plate and the graphite carbon cloth are fused into the novel conductive plastic drainage plate, the conductive plastic drainage plate is used as an electrode, the corrosion to sludge can be reduced, and the cost is greatly saved compared with the traditional metal electrode. Meanwhile, the problem that the electroosmosis efficiency is influenced by the separation of the electrode and the soil body in the later stage of electroosmosis can be solved by adopting a method of horizontally laying a multilayer electroosmosis drainage system, the conductive plastic drainage plate is light in weight and can be suspended in sludge, the conductive plastic drainage plate can move downwards along with the shrinkage of the soil body during electroosmosis, the drainage path is shortened, and the top-down electroosmosis sequence is favorable for drainage.
Drawings
FIG. 1 is a schematic structural view of a conductive plastic drain board of the present invention;
FIG. 2 is a schematic structural view of an electrically conductive drainage cell of the present invention;
FIG. 3 is a schematic view of the construction of an electroosmotic drainage system of the present invention;
FIG. 4 is an assembly schematic of the present invention;
FIG. 5 is a schematic view of the construction of the drain board interface of the present invention;
FIG. 6 is a schematic view of the connection of the horizontal conduit of the present invention;
fig. 7 is a schematic view of the construction of the semicircular clip of the present invention.
Reference numerals: 1-a sludge tank; 2-electroosmotic drainage system; 3-a direct current power supply; 4-a conductive drainage cell; 5-conductive plastic drain board; 6-a drain hose; 7-a top anode layer; 8-a first graphite carbon cloth; 9-positive electrode lead; 10-harmonica-shaped plastic core plate; 11-an inverted filter layer; 12-a second graphite carbon cloth; 13-a drain board interface; 14-first wood screw; 15-horizontal connection structure; 16-vertical connection structure; 17-brass wire; 18-a vacuum pump; 19-a horizontal conduit; 20-blocking; 21-upper plate; 22-lower plate; 23-second wood screw; 24-a metal contact; 25-sub-lead; 26-rubber ring; 27-a half-circle clip; 28-screw; 29-middle variable polarity drainage layer, 30-bottom cathode drainage layer, 31-water vapor exchange tank.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
As shown in fig. 1 to 7, the sludge solidification and dewatering fabricated structure based on the horizontal electroosmosis method comprises a top anode layer 7, one or more middle variable polarity drainage layers 29 and a bottom cathode drainage layer 30 which are sequentially arranged in a sludge tank 1 from top to bottom, wherein the layers are separated by sludge to be solidified, electroosmosis drainage systems 2 are respectively arranged on the middle variable polarity drainage layers 29 and the bottom cathode drainage layer 30, and the electroosmosis drainage systems 2 are externally connected with a direct current power supply 3.
The horizontal electroosmosis-based sludge solidification and dewatering fabricated structure according to claim 1, wherein: the electroosmosis drainage system 2 is composed of a plurality of conductive drainage units 4 and a connecting structure, wherein each conductive drainage unit 4 is provided with a plurality of conductive plastic drainage plates 5, the conductive plastic drainage plates 5 are connected with the connecting structure, and drainage hoses 6 are inserted into the connecting structure.
The uppermost top anode layer 7 in the sludge tank 1 is composed of a plurality of first graphite carbon cloths 8, the first graphite carbon cloths 8 are laid side by side, the first graphite carbon cloths 8 are connected with a positive electrode lead 9, and the positive electrode lead 9 is connected with an external direct-current power supply 3. The laying direction of the first graphite carbon cloth 8 is consistent with that of the conductive plastic drainage plate 5 of the conductive drainage unit 4, and the laying positions of the conductive plastic drainage plate 5 on the bottom cathode drainage layer 30, the conductive plastic drainage plate 5 on the multi-layer electroosmosis drainage system 2 of the middle variable-polarity drainage layer 29 and the first graphite carbon cloth 8 are consistent or nearly consistent. Because the top anode layer 7 is arranged on the upper surface of the sludge in the sludge tank, dehydration is not needed, and only a plurality of pieces of first graphite carbon cloth 8 are needed, so that the workload can be reduced by arranging the conductive plastic drainage plates oppositely, and the device is economical and applicable.
The conductive plastic drain board 5 comprises a harmonica-shaped plastic core board 10, and an inverted filter layer 11 and a second graphite carbon cloth 12 are sequentially bonded above and below the harmonica-shaped plastic core board 10. The end part of the harmonica-shaped plastic core plate 10 far away from the connecting structure is sealed and wrapped by a reverse filtering layer 11 and a second graphite carbon cloth 12.
The end parts of the conductive plastic drainage plates 5 of two adjacent conductive drainage units 4 on the electroosmotic drainage system 2 are connected through a drainage plate interface 13, first wood screws 14 penetrate through the two sides of the drainage plate interface 13 from top to bottom, and the conductive plastic drainage plates 5 are fixed by the first wood screws 14. The drain board interface 13 physically connects the two adjacent conductive plastic drain boards 5 of the conductive drainage unit 4, so that the stability of the electroosmosis drainage system 2 is ensured, and the local settlement and the local deviation caused by the local settlement are avoided.
The connecting structure comprises a horizontal connecting structure 15 and a vertical connecting structure 16, brass wires 17 are arranged in the horizontal connecting structure 15 and the vertical connecting structure 16, the brass wires 17 are connected with an external direct-current power supply 3, and the conductive drainage unit 4 is composed of a single horizontal connecting structure 15 and a plurality of conductive plastic drainage plates 5 correspondingly connected to two sides of the horizontal connecting structure 15.
The drainage hose 6 is inserted into the horizontal connecting structure 15 and the vertical connecting structure 16, the drainage hose 6 is externally connected with a vacuum pump 18, the electroosmotic drainage system 2 is composed of a plurality of horizontal guide pipes 19 connected with the front parts of the conductive drainage units 4, brass wires 17 are arranged in the horizontal guide pipes 19, pipe bodies of the horizontal guide pipes 19 are connected with the vertical connecting structure 16, and the tail ends of the connecting structures of the conductive drainage units 4 are provided with plugs 20 for plugging. The horizontal connecting structure 15, the vertical connecting structure 16, the drain board interface 13 and the horizontal conduit 19 are all made of PVC materials, and the horizontal connecting structure 15 and the vertical connecting structure 16 are arranged in the shape of a pipeline. The drain board interface 13 is square, and both ends have the notch, notch and conductive plastic drain board 5 phase-match.
The horizontal connecting structure 15 is provided with an upper plate 21 and a lower plate 22 which are correspondingly arranged, a plurality of conductive plastic drainage plates 5 are correspondingly connected between the upper plate 21 and the lower plate 22, and the upper plate 21 and the lower plate 22 are fixedly connected with the conductive plastic drainage plates 5 through second wood screws 23. The upper plate 21 and the lower plate 22 are disposed to be elongated in the longitudinal direction of the horizontal coupling structure 15.
The conductive plastic drain board 5 is provided with electrodes which are connected with brass wires 17 in the horizontal connecting structure 15. And metal contacts 24 are arranged in the upper plate 21 and the lower plate 22, the metal contacts 24 are connected with the brass wires 17 on the inner wall of the horizontal connecting structure 15 through secondary wires 25, and after the conductive plastic drainage plate 5 is connected with the horizontal connecting structure 15, the second graphite carbon cloth 12 on the surface of the conductive plastic drainage plate 5 is contacted with the metal contacts 24 and is connected with the brass wires 17 through the metal contacts 24 and the secondary wires 25.
When the horizontal guide pipe 19 is installed, two ends of the rubber ring 26 are respectively sleeved on the ends of two adjacent horizontal guide pipes 19 to be connected, then the two semicircular clamps 27 are buckled outside the rubber ring 26, and the two semicircular clamps 27 are buckled and fixed through screws 28, so that the two horizontal guide pipes 19 can be connected.
The dehydration method of the sludge solidification and dehydration fabricated structure based on the horizontal electroosmosis method is characterized in that the sludge solidification and dehydration fabricated structure based on the horizontal electroosmosis method is arranged in a sludge tank, and the following steps are carried out:
s1, adopting a top-down electroosmosis sequence during electroosmosis, wherein the top anode layer 7 is used as an anode and externally connected with a direct current power supply 3, the first electroosmosis drainage system of the middle variable polarity drainage layer 29 below the top anode layer 7 is used as a cathode and externally connected with the direct current power supply 3, and at the moment, a drainage hose 6 of the first electroosmosis drainage system is externally connected with a vacuum pump 18 for pumping water;
s2, after electroosmosis for a period of time, converting the cathode of the electroosmosis drainage system of the first layer into the cathode to be used as the anode externally connected with the direct current power supply 3, using the middle variable polarity drainage layer 29 below as the cathode externally connected with the direct current power supply 3 for electroosmosis, and externally connecting the drainage hose 32 of the middle variable polarity drainage layer 29 with the water vapor exchange tank 31 and the vacuum pump 18 for water pumping; therefore, the middle variable-polarity drainage layer firstly drains for the cathode and then becomes the anode, namely, the yellow lead 17 of the first-layer electroosmosis drainage system of the middle variable-polarity drainage layer is firstly externally connected with the cathode of the direct-current power supply 3 to finish drainage and then is connected with the anode, and the cathode of the second-layer electroosmosis drainage system of the middle variable-polarity drainage layer 29 is externally connected with the direct-current power supply 3 to finish drainage until the bottom cathode drainage layer 30 is used as the last cathode to perform drainage, so that the multilayer electroosmosis drainage is realized from top to bottom in sequence.
The sludge solidification and dehydration fabricated structure based on the horizontal electroosmosis method is constructed in the following way:
s01, assembling the conductive plastic drainage plate 5: sequentially bonding a reverse filter layer 11 and a second graphite carbon cloth 12 above and below the harmonica-shaped plastic core plate 10;
s02, assembling the conductive drainage cell 4: fixedly arranging brass wires on an upper plate 21 of the horizontal connecting structure 15, and connecting a plurality of conductive plastic drainage plates 5 to two sides of the upper plate 21 and a lower plate 22 of the horizontal connecting structure 15 through second wood screws 23, wherein drainage hoses 6 penetrate through the middles of the upper plate 21 and the lower plate 22;
s03, assembling the middle variable polarity drainage layer 29 and the bottom cathode drainage layer 30 of the electro-osmotic drainage system 2: connecting the end parts of a plurality of conductive drainage units 4 with the same horizontal guide pipe 19, arranging a plug 20 at the other end of the connecting structure of the conductive drainage units 4 for plugging, connecting a vertical connecting structure 16 on the pipe body of the horizontal guide pipe 19, extending brass wires 17 of the conductive drainage units 4 into the horizontal guide pipe 19 and the vertical connecting structure 16, connecting a direct current power supply 3 outwards through the vertical connecting structure 16, arranging drainage hoses 6 in the horizontal guide pipe 19 and the vertical connecting structure 16, and communicating the drainage hoses 6 in the conductive plastic drainage plate 5, the horizontal guide pipe 19 and the vertical connecting structure 16;
s04, assembling the top anode layer 7: lay polylith first graphite carbon cloth 8 side by side to with polylith first graphite carbon cloth 8 connection positive pole wire 9, positive pole wire 9 structure is outwards switched in DC power supply 3.
S05, sequentially paving a bottom cathode drainage layer 30, a middle variable-polarity drainage layer 29 and a top anode layer 7 in the sludge tank 1 from bottom to top, paving the bottom cathode drainage layer 30 in the sludge tank 1, pouring a first layer of sludge, paving the middle variable-polarity drainage layer 29 on the first layer of sludge, pouring a second layer of sludge on the middle variable-polarity drainage layer 29, and arranging the vertical connecting structures 16 of the electroosmosis drainage systems 2 of the bottom cathode drainage layer 30 and the middle variable-polarity drainage layer 29 close to the tank wall of the sludge tank 1 according to the sequence until the top anode layer 7, the bottom anode layer 30 and the middle variable-polarity drainage layer 29 are paved.
The dehydration principle of the electroosmosis drainage system of the invention is as follows: the soil particles in the sludge are negatively charged and the water molecules in the sludge, which are free to move, are relatively positively charged. And an electroosmotic drainage system 2 is laid on the upper surface and the lower surface of the sludge, the electroosmotic drainage system 2 on the upper surface is connected with a positive electrode of a power supply to be used as an anode, and the electroosmotic drainage system 2 on the lower surface is connected with a negative electrode of the power supply to be used as a cathode. The sludge can generate a direct current electric field in the direction from bottom to top, the moving direction of water molecules with negative charges is opposite to the direction of the electric field under the driving of the electric field force, namely the water molecules with negative charges can move from the anode to the cathode, water flow sequentially passes through the reverse filter layer 11, the second graphite carbon cloth 12 and the harmonica-shaped plastic drainage plate and then is collected into the horizontal connection structure 15, and then the vacuum pump 18 is pumped out through the drainage hose 6.
According to the description and the drawings of the present invention, those skilled in the art can easily manufacture or use the horizontal electroosmosis-based sludge solidification and dehydration fabricated structure and the construction method thereof of the present invention, and can produce the positive effects described in the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. Silt solidification dehydration assembled structure based on horizontal electroosmosis method, its characterized in that: the device comprises a top anode layer (7), one or more middle variable-polarity drainage layers (29) and a bottom cathode drainage layer (30) which are sequentially arranged in a sludge tank (1) from top to bottom, wherein sludge needing to be solidified is separated between the layers, an electroosmosis drainage system (2) is arranged on each of the middle variable-polarity drainage layer (29) and the bottom cathode drainage layer (30), and the electroosmosis drainage system (2) is externally connected with a direct-current power supply (3).
2. The horizontal electroosmosis-based sludge solidification and dewatering fabricated structure according to claim 1, wherein: the electroosmosis drainage system (2) comprises a plurality of conductive drainage units (4) and a connecting structure, wherein the conductive drainage units (4) are provided with a plurality of conductive plastic drainage plates (5), the conductive plastic drainage plates (5) are connected with the connecting structure, and drainage hoses (6) are inserted in the connecting structure.
3. The horizontal electroosmosis-based sludge solidification and dewatering fabricated structure according to claim 1, wherein: the top anode layer (7) at the top in the sludge tank (1) is composed of a plurality of first graphite carbon cloths (8), the first graphite carbon cloths (8) are laid side by side, the first graphite carbon cloths (8) are connected with a positive electrode lead (9), and the positive electrode lead (9) is connected with an external direct-current power supply (3).
4. The horizontal electroosmosis-based sludge solidification dewatering fabricated structure of claim 2, wherein: the conductive plastic drainage plate (5) comprises a harmonica-shaped plastic core plate (10), and an inverted filter layer (11) and a second graphite carbon cloth (12) are sequentially bonded above and below the harmonica-shaped plastic core plate (10).
5. The horizontal electroosmosis-based sludge solidification dewatering fabricated structure of claim 2, wherein: the end parts of the conductive plastic drainage plates (5) of two adjacent conductive drainage units (4) on the electroosmosis drainage system (2) are connected through a drainage plate interface (13), first wood screws (14) penetrate through the two sides of the drainage plate interface (13) up and down, and the conductive plastic drainage plates (5) are fixed by the first wood screws (14).
6. The horizontal electroosmosis-based sludge solidification dewatering fabricated structure of claim 2, wherein: the connecting structure comprises a horizontal connecting structure (15) and a vertical connecting structure (16), brass wires (17) are arranged in the horizontal connecting structure (15) and the vertical connecting structure (16), the brass wires (17) are connected with an external direct current power supply (3), the conductive drainage unit (4) is composed of a single horizontal connecting structure (15) and a plurality of conductive plastic drainage plates (5) correspondingly connected to two sides of the horizontal connecting structure (15), the conductive plastic drainage plates (5) are provided with electrodes, and the electrodes are connected with the brass wires (17) in the horizontal connecting structure (15).
7. The horizontal electroosmosis-based sludge solidification dewatering fabricated structure of claim 6, wherein: the drainage hose (6) is inserted into the horizontal connecting structure (15) and the vertical connecting structure (16), the drainage hose (6) is externally connected with a vacuum pump (18), the electroosmosis drainage system (2) is composed of a plurality of horizontal guide pipes (19) connected with the front parts of the conductive drainage units (4), brass wires (17) are arranged in the horizontal guide pipes (19), pipe bodies of the horizontal guide pipes (19) are connected with the vertical connecting structure (16), and the tail ends of the connecting structures of the conductive drainage units (4) are provided with plugs (20) for plugging.
8. The horizontal electroosmosis-based sludge solidification dewatering fabricated structure of claim 6, wherein: horizontal connection structure (15) have corresponding upper plate (21) and hypoplastron (22) that set up, correspond between upper plate (21) and the hypoplastron (22) and connect polylith conductive plastic drain bar (5), upper plate (21) and hypoplastron (22) are through second wood screw (23) and conductive plastic drain bar (5) fixed connection.
9. A method for dewatering a horizontal electroosmosis based sludge solidification dewatering fabricated structure, characterized in that the horizontal electroosmosis based sludge solidification dewatering fabricated structure of claim 1 is arranged and the following steps are performed:
s1, adopting a top-down electroosmosis sequence during electroosmosis, wherein the top anode layer (7) is used as an anode and externally connected with a direct current power supply (3), a first electroosmosis drainage system of the middle variable-polarity drainage layer (29) below the top anode layer (7) is used as a cathode and externally connected with the direct current power supply (3), and at the moment, a drainage hose (6) of the first electroosmosis drainage system is externally connected with a vacuum pump (18) to pump water;
s2, after electroosmosis for a period of time, converting the cathode of the electroosmosis drainage system of the first layer into the cathode which is externally connected with a direct current power supply (3) and the cathode of the electroosmosis drainage system of the second layer below is externally connected with the direct current power supply (3) for electroosmosis, and externally connecting a drainage hose (6) of the electroosmosis drainage system of the second layer with a vacuum pump (18) for pumping water; therefore, the middle part polarity-changeable drainage layer (29) firstly drains the cathode and then becomes the anode until the bottom cathode drainage layer (30) is used as the last cathode to drain, thereby realizing the multi-layer electroosmotic drainage from top to bottom in sequence.
10. The horizontal electroosmosis based dewatering process for a sludge solidification dewatering fabricated structure of claim 9, wherein: the sludge solidification and dehydration fabricated structure based on the horizontal electroosmosis method is constructed in the following way:
s01, assembling the conductive plastic drainage plate (5): sequentially bonding a reverse filter layer (11) and a second graphite carbon cloth (12) above and below the harmonica-shaped plastic core plate (10);
s02, assembling the conductive drainage unit (4): fixedly arranging brass wires on an upper plate (21) of a horizontal connecting structure (15), connecting a plurality of conductive plastic drainage plates (5) to two sides of the upper plate (21) and a lower plate (22) of the horizontal connecting structure (15) through second wood screws (23), and penetrating drainage hoses (6) in the middles of the upper plate (21) and the lower plate (22);
s03, assembling the middle variable polarity drainage layer (29) and the bottom cathode drainage layer (30) into an electroosmotic drainage system (2): connecting the end parts of a plurality of conductive drainage units (4) with the same horizontal guide pipe (19), arranging a plug (20) at the other end of the connecting structure of the conductive drainage units (4) for plugging, connecting a vertical connecting structure (16) on the pipe body of the horizontal guide pipe (19), extending brass wires (17) of the conductive drainage units (4) into the horizontal guide pipe (19) and the vertical connecting structure (16), connecting a direct current power supply (3) outwards through the vertical connecting structure (16), arranging drainage hoses (6) in the horizontal guide pipe (19) and the vertical connecting structure (16), and communicating the conductive plastic drainage plate (5), the horizontal guide pipe (19) and the drainage hoses (6) in the vertical connecting structure (16);
s04, assembling the top anode layer (7): lay polylith first graphite carbon cloth (8) side by side to connect anodal wire (9) with polylith first graphite carbon cloth (8), anodal wire (9) structure is outwards inserted DC power supply (3).
S05, sequentially paving a bottom cathode drainage layer (30), a middle variable-polarity drainage layer (29) and a top anode layer (7) in the sludge tank (1) from bottom to top, paving the bottom cathode drainage layer (30) in the sludge tank (1) first, pouring a first layer of sludge, paving a middle variable-polarity drainage layer (29) on the first layer of sludge, pouring a second layer of sludge on the middle variable-polarity drainage layer (29), and according to the sequence until the top anode layer (7) is paved, wherein a vertical connecting structure (16) of an electroosmosis drainage system (2) of the middle variable-polarity drainage layer (29) and the bottom cathode drainage layer (30) is arranged close to the tank wall of the sludge tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110479327.1A CN113213724A (en) | 2021-04-30 | 2021-04-30 | Silt solidification and dehydration assembly type structure based on horizontal electroosmosis method and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110479327.1A CN113213724A (en) | 2021-04-30 | 2021-04-30 | Silt solidification and dehydration assembly type structure based on horizontal electroosmosis method and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113213724A true CN113213724A (en) | 2021-08-06 |
Family
ID=77090300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110479327.1A Pending CN113213724A (en) | 2021-04-30 | 2021-04-30 | Silt solidification and dehydration assembly type structure based on horizontal electroosmosis method and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113213724A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101736390A (en) * | 2009-12-24 | 2010-06-16 | 北京有色金属研究总院 | Lead dioxide electrode plate and preparation method thereof |
| CN102534717A (en) * | 2010-12-17 | 2012-07-04 | 北京有色金属研究总院 | Method for preparing lead dioxide electrode plate on engineering plastic substrate |
| CN102720182A (en) * | 2012-06-15 | 2012-10-10 | 武汉大学 | Conductive plastic drain board |
| CN103395957A (en) * | 2013-07-11 | 2013-11-20 | 河海大学 | Layered electro-osmotic sludge dehydration device and using method thereof |
| US20160311003A1 (en) * | 2013-12-09 | 2016-10-27 | Afitex International | Soil-treatment system, geocomposite for such a system, and soil consolidation method |
| CN106445265A (en) * | 2016-10-14 | 2017-02-22 | 深圳市宇顺工业智能科技有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN109208577A (en) * | 2018-09-30 | 2019-01-15 | 华中科技大学 | A kind of horizontal vacuum pre-pressed joint electric osmose reinforces the device and method of saturated dredger soft soil |
| CN111794258A (en) * | 2020-07-24 | 2020-10-20 | 温州泰乐维工程设计有限公司 | Foundation pit dewatering system |
| CN216039217U (en) * | 2021-04-30 | 2022-03-15 | 中国电建集团华东勘测设计研究院有限公司 | Silt solidification dehydration assembled structure based on horizontal electroosmosis method |
-
2021
- 2021-04-30 CN CN202110479327.1A patent/CN113213724A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101736390A (en) * | 2009-12-24 | 2010-06-16 | 北京有色金属研究总院 | Lead dioxide electrode plate and preparation method thereof |
| CN102534717A (en) * | 2010-12-17 | 2012-07-04 | 北京有色金属研究总院 | Method for preparing lead dioxide electrode plate on engineering plastic substrate |
| CN102720182A (en) * | 2012-06-15 | 2012-10-10 | 武汉大学 | Conductive plastic drain board |
| CN103395957A (en) * | 2013-07-11 | 2013-11-20 | 河海大学 | Layered electro-osmotic sludge dehydration device and using method thereof |
| US20160311003A1 (en) * | 2013-12-09 | 2016-10-27 | Afitex International | Soil-treatment system, geocomposite for such a system, and soil consolidation method |
| CN106445265A (en) * | 2016-10-14 | 2017-02-22 | 深圳市宇顺工业智能科技有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN109208577A (en) * | 2018-09-30 | 2019-01-15 | 华中科技大学 | A kind of horizontal vacuum pre-pressed joint electric osmose reinforces the device and method of saturated dredger soft soil |
| CN111794258A (en) * | 2020-07-24 | 2020-10-20 | 温州泰乐维工程设计有限公司 | Foundation pit dewatering system |
| CN216039217U (en) * | 2021-04-30 | 2022-03-15 | 中国电建集团华东勘测设计研究院有限公司 | Silt solidification dehydration assembled structure based on horizontal electroosmosis method |
Non-Patent Citations (1)
| Title |
|---|
| 周大纲主编: "《土工合成材料制造技术及性能 第2版》", 30 April 2019, 中国轻工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107905211B (en) | Electric osmosis electrode capable of quickly crusting by newly dredger fill and use method thereof | |
| CN106284293A (en) | A kind of system and method for vacuum pre-pressed joint electric osmose reinforcing soft ground | |
| CN216039217U (en) | Silt solidification dehydration assembled structure based on horizontal electroosmosis method | |
| US20160311003A1 (en) | Soil-treatment system, geocomposite for such a system, and soil consolidation method | |
| CN206138807U (en) | Desulfurization system's silt discharge system | |
| CN212104266U (en) | Hydraulic engineering desilting device | |
| CN104667754B (en) | Dielectrophoresis in-line type membrane assembly | |
| CN113213724A (en) | Silt solidification and dehydration assembly type structure based on horizontal electroosmosis method and construction method thereof | |
| CN104150740A (en) | Two-pool sludge dehydration technology through vacuum pre-compression combined electroosmosis | |
| CN108862999B (en) | Multi-field combined waste slurry dewatering device | |
| CN110903014A (en) | River channel engineering sludge dewatering method and equipment | |
| CN104294812A (en) | Tumbler-type water collecting device for vacuum preloading | |
| CN216108339U (en) | Prevention of seepage water wall body of hydraulic and hydroelectric engineering construction | |
| CN112144501B (en) | Plastic drainage plate for preventing micro soil particles from being blocked and construction method thereof | |
| JP2005095814A (en) | Apparatus and method for dehydrating highly hydrated earth and sand | |
| CN114411688A (en) | System and method for treating soft foundation by combining pipeline heating and vacuum with electroosmosis prepressing | |
| CN209866960U (en) | Autonomous controllable soil or sediment pollutant electric acidification dissociation device | |
| CN108343051A (en) | A kind of mixing cured processing method of electric osmose for shallow layer foundation | |
| CN108862957B (en) | Building slurry dehydration process based on multi-field coupling | |
| CN208493836U (en) | A kind of stifled electric field membrane filter of general-purpose highly effective anti-pollution | |
| CN114105433B (en) | Method for removing dirt and dewatering large amount of industrial waste residue slurry | |
| CN106746447B (en) | Electric dehydration device based on silt transportation pipeline | |
| CN206666347U (en) | A kind of electric osmose filter frame device for plate and frame filter press | |
| CN109162271A (en) | Drain bar, hardened system and reinforcement means for reinforcing soft ground | |
| CN220034307U (en) | Mud barge for transferring dredging sediment of river, lake and reservoir |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210806 |
|
| RJ01 | Rejection of invention patent application after publication |