CN108101338B - Sludge dewatering device based on electroosmosis principle - Google Patents
Sludge dewatering device based on electroosmosis principle Download PDFInfo
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- CN108101338B CN108101338B CN201711418318.1A CN201711418318A CN108101338B CN 108101338 B CN108101338 B CN 108101338B CN 201711418318 A CN201711418318 A CN 201711418318A CN 108101338 B CN108101338 B CN 108101338B
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- 239000010802 sludge Substances 0.000 title claims abstract description 160
- 238000005370 electroosmosis Methods 0.000 title claims abstract description 28
- 238000011282 treatment Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 15
- 208000005156 Dehydration Diseases 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 8
- 239000012466 permeate Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000005684 electric field Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 4
- 239000010865 sewage Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- 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 discloses a sludge dewatering device based on an electroosmosis principle, which comprises an insulating sludge tank, a dewatering mechanism and a lifting mechanism; the insulating sludge tank comprises a side wall and a bottom plate, and the lifting mechanism is arranged below the bottom plate; the dewatering mechanism comprises a cathode net control plate arranged on the bottom plate, an anode plate arranged at the upper opening of the insulating sludge tank and a driving device for driving the anode plate to rotate, current is conducted between the anode plate and the cathode net control plate so as to carry out electroosmosis dewatering treatment on sludge, and a scraper which is arranged on one surface of the anode plate and is in contact with the sludge and is in Archimedes spiral arrangement is arranged on one surface of the anode plate, which is used for discharging the sludge. According to the sludge dewatering device, the electric field acting on the electroosmosis effect can keep stable strength by combining the electroosmosis dewatering mode and the mechanical movement mode, so that the problem of increasing the local resistance value of sludge is avoided, and the sludge dewatering efficiency is effectively improved.
Description
Technical Field
The invention relates to the technical field of sludge dewatering, in particular to equipment for deep dewatering of sludge by adopting an electroosmosis principle.
Background
In recent years, with the rapid development of domestic urban domestic sewage treatment plants, the surplus activated sludge produced by the sewage treatment plants is rapidly increased, and is becoming a nuisance. The sludge is in a colloid state due to the large number of active bacteria, and is difficult to mechanically dehydrate. At present, a centrifugal sludge dehydrator and a belt sludge dehydrator which are commonly used only dehydrate sludge to the sludge with the water content of about 80 percent. The dewatered sludge is still high in water content, so that the dewatered sludge is unfavorable for subsequent treatments such as solidification landfill, biological fermentation or incineration.
At present, the dewatering water content of the residual activated sludge of urban sewage treatment plants required by the country is less than 60%, mechanical dewatering technology mainly comprising a box type filter press, sludge solidification landfill technology and the like are presented, but the operation cost of the technologies is higher and the efficiency is low, and some technologies reduce the water content by adding inorganic solid substances, so that the content of organic matters is reduced, the subsequent recycling is not facilitated, the technology is particularly used for preparing fertilizer by biological fermentation, and the landfill soil is polluted.
Electroosmosis sludge dewatering is becoming a reliable and stable technique for deep dewatering of sludge by electric field action, and has been gradually paid attention to and accepted. The principle is that a certain direct current voltage is applied to the sludge, the phenomenon that the sludge particles and water molecules are separated and moved in opposite polarity directions is utilized for dehydration, and high mechanical pressure is not required to be applied during dehydration.
An important factor affecting the dewatering efficiency of electroosmosis sludge is that the water content of sludge near the anode side is rapidly reduced, the sludge with low water content causes the increase of local resistance value, the electric field acting on the electroosmosis effect is rapidly reduced, the whole electroosmosis efficiency is directly reduced, and the dewatering time is prolonged. None of the existing electroosmosis sludge dewatering devices effectively focus on and solve this problem.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a sludge dewatering device based on an electroosmosis principle, which combines an electroosmosis dewatering mode and a mechanical movement mode to ensure that an electric field acting on an electroosmosis effect can maintain stable strength, so that the problem of increasing local resistance value of sludge is avoided, and the efficiency of sludge dewatering is effectively improved.
The invention solves the problems by adopting the following technical scheme:
the sludge dewatering device based on the electroosmosis principle comprises an insulating sludge tank for loading sludge, a dewatering mechanism for carrying out electroosmosis dewatering treatment on the sludge in the insulating sludge tank and a lifting mechanism for lifting the sludge in the insulating sludge tank; the insulating sludge tank comprises a side wall and a bottom plate capable of lifting along the side wall, and the lifting mechanism is arranged below the bottom plate; the dewatering mechanism comprises a cathode net control plate arranged on the bottom plate, an anode plate arranged at the upper opening of the insulating sludge tank and flush with the upper opening of the insulating sludge tank, and a driving device for driving the anode plate to rotate, wherein current is conducted between the anode plate and the cathode net control plate so as to carry out electroosmosis dewatering treatment on sludge, and a scraper which is arranged on one surface of the anode plate and is in contact with the sludge and is arranged in an Archimedes spiral manner is arranged on one surface of the anode plate, which is used for discharging the sludge.
Further, the dehydration mechanism also comprises a direct current power supply for forming a power supply loop with the anode plate, the sludge and the cathode screen control plate, and the positive end and the negative end of the direct current power supply are respectively connected with the anode plate and the cathode screen control plate.
Further, the lifting mechanism comprises a lifting screw rod connected below the bottom plate, a lifting driving wheel for driving the lifting screw rod to lift and move and a lifting motor for driving the lifting driving wheel to rotate, wherein the lifting driving wheel is connected with a rotating shaft of the lifting motor, and the lifting driving wheel is meshed with the lifting screw rod.
Further, a liquid collection chamber for collecting permeate obtained from the sludge is provided below the bottom plate.
Further, the bottom of the liquid collection chamber is provided with a vacuum suction module for discharging permeate.
Further, the driving device is a rotary motor.
Further, the cross section of the scraper is triangular.
Further, the anode plate is circular.
Further, the diameter of the anode plate is larger than the diameter of the opening above the insulating sludge tank.
Further, there are several archimedes spirals formed by the doctor blade, and the anode plate equally divides the archimedes spiral formed by the doctor blade.
The beneficial effects of the invention are as follows: according to the sludge dewatering device based on the electroosmosis principle, the insulating sludge tank can be used for effectively loading water-containing sludge, when the sludge is in the insulating sludge tank, the lifting mechanism can continuously drive the bottom plate to drive the sludge to lift along the side wall, so that the sludge at the topmost layer can be well contacted with the anode plate, and when the sludge is simultaneously contacted with the anode plate and the cathode net control plate, current can be conducted from the anode plate to the cathode net control plate through the sludge, so that electroosmosis dewatering treatment is carried out on the sludge; when the sludge at the topmost layer is dehydrated and dried under the action of the anode plate, the anode plate which is continuously rotated can continuously discharge the dried sludge by utilizing the scraper which is arranged on the surface of the anode plate and is arranged in an Archimedes spiral, and along with the continuous discharge of the dried sludge, the lifting mechanism can synchronously lift the sludge in the insulating sludge tank. Therefore, the sludge dewatering device disclosed by the invention combines an electroosmosis dewatering mode and a mechanical movement mode, so that an electric field acting on an electroosmosis effect can keep stable strength, the problem of increasing the local resistance value of sludge is avoided, and the sludge dewatering efficiency is effectively improved.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic view of a sludge dewatering apparatus of the present invention;
figure 2 is a schematic diagram of a doctor blade in an anode plate.
Detailed Description
Referring to fig. 1 to 2, the electroosmosis principle-based sludge dewatering apparatus of the present invention includes an insulating sludge tank 1 for loading sludge, a dewatering mechanism for electroosmosis dewatering treatment of sludge in the insulating sludge tank 1, and a lifting mechanism for lifting sludge in the insulating sludge tank 1; the insulating sludge tank 1 comprises a side wall and a bottom plate capable of lifting along the side wall, and the lifting mechanism is arranged below the bottom plate; the dewatering mechanism comprises a cathode net control plate 2 arranged on the bottom plate, an anode plate 3 arranged at the upper opening of the insulating sludge tank 1 and flush with the upper opening of the insulating sludge tank 1, and a driving device 4 for driving the anode plate 3 to rotate, wherein current is conducted between the anode plate 3 and the cathode net control plate 2 so as to carry out electroosmotic dewatering treatment on sludge, and a scraper 31 which is used for discharging the sludge and is arranged on one surface of the anode plate 3, which is contacted with the sludge, and is arranged in an Archimedes spiral manner. Wherein the driving device 4 is a rotating electric machine. Specifically, the insulating sludge tank 1 can effectively load water-containing sludge, when the sludge is in the insulating sludge tank 1, the lifting mechanism can continuously drive the bottom plate to drive the sludge to lift along the side wall, so that the sludge at the topmost layer can be in good contact with the anode plate 3, and when the sludge is simultaneously in contact with the anode plate 3 and the cathode screen control plate 2, current can be conducted from the anode plate 3 to the cathode screen control plate 2 through the sludge, so that electroosmotic dehydration treatment is performed on the sludge; when the topmost sludge is dehydrated and dried under the action of the anode plate 3, the anode plate 3 which continuously rotates can continuously discharge the dried sludge by utilizing the scraper 31 which is arranged on the surface of the anode plate and is arranged in an Archimedes spiral manner, and along with the continuous discharge of the dried sludge, the lifting mechanism can synchronously lift the sludge in the insulating sludge tank 1, and the problem of local resistance value increase of the sludge can not occur because the sludge between the anode plate 3 and the cathode screen control plate 2 is in a wet state, so that an electric field acting on an electroosmosis effect can keep stable strength in the sludge at any time, and the sludge can be continuously and effectively dehydrated. Therefore, the sludge dewatering device disclosed by the invention combines an electroosmosis dewatering mode and a mechanical movement mode, so that an electric field acting on an electroosmosis effect can keep stable strength, the problem of increasing the local resistance value of sludge is avoided, and the sludge dewatering efficiency is effectively improved.
Referring to fig. 1, the dewatering mechanism further includes a dc power supply 5 for forming a power circuit with the anode plate 3, the sludge and the cathode grid control plate 2, wherein the positive and negative ends of the dc power supply 5 are connected to the anode plate 3 and the cathode grid control plate 2, respectively. Specifically, the direct current power supply 5 outputs a stable power supply to the anode plate 3, so that a stable electric field is generated in the sludge, and the electric field is ensured to be effectively applied to the sludge with the water content which is not up to the requirement. When the anode plate 3 and the cathode screen control plate 2 carry out electroosmotic dehydration treatment on sludge, the strength of an electric field generated between the anode plate 3 and the cathode screen control plate 2 is between 3 and 8V/mm. The direct current power supply 5 is a pulse switch direct current adjustable power supply, and the output voltage of the direct current power supply 5 is adjusted according to the thickness of the sludge measured by the electronic ruler, so that the sludge can be ensured to be in an electric field with proper strength.
1-2, the lifting mechanism comprises a lifting screw rod 6 connected below the bottom plate, a lifting driving wheel 7 for driving the lifting screw rod 6 to lift and move and a lifting motor 8 for driving the lifting driving wheel 7 to rotate, wherein the lifting driving wheel 7 is connected with a rotating shaft of the lifting motor 8, and the lifting driving wheel 7 is meshed with the lifting screw rod 6. Specifically, when the sludge dewatering device of the invention works, the lifting motor 8 can correspondingly rotate along with the speed of the scraper 31 in the anode plate 3 for discharging sludge, so as to drive the lifting driving wheel 7 to rotate and drive the lifting screw 6 to rotate, so that the lifting screw 6 can lift the bottom plate along with the rotation action of the lifting driving wheel 7, the sludge on the bottom plate can be continuously close to and contacted with the anode plate 3 at a proper speed, thereby ensuring that the sludge can be stably dewatered and discharged, and preventing the water content of the discharged sludge from being inconsistent with the requirement.
Wherein, referring to fig. 1, a liquid collecting chamber 9 for collecting permeate obtained from the sludge is also arranged below the bottom plate. Specifically, the liquid collecting chamber 9 can effectively receive the liquid removed from the sludge, so that the sludge and the liquid are effectively separated, the removed liquid is ensured not to dip the sludge for the second time, and the dehydration effect and efficiency of the sludge are improved.
Wherein, referring to fig. 1, the bottom of the liquid collection chamber 9 is provided with a vacuum suction module 10 for discharging permeate. Specifically, when a certain degree of liquid is collected in the liquid collection chamber 9, the vacuum suction module 10 operates to rapidly and effectively discharge the liquid in the liquid collection chamber 9 by the suction force of the vacuum, so that the effective collection of the subsequent liquid is not affected.
1-2, the cross section of the scraper 31 is triangular; the anode plate 3 is circular; the diameter of the anode plate 3 is larger than the diameter of the opening above the insulating sludge tank 1. Specifically, the diameter of the anode plate 3 is preferably 1m, and is made of graphite plate, and the diameter of the anode plate 3 is larger than the diameter of the opening above the insulating sludge tank 1; the doctor blade 31 having a triangular cross section has a base dimension of 5mm, a blade height of 2.5mm, is made of a hard insulating ceramic, and is fixed to the anode plate 3 by adhesion. The anode plate 3 formed of the graphite plate has good conductive performance, so that a stable electric field can be generated to the sludge, and the diameter of the anode plate 3 is larger than the diameter of the opening above the insulating sludge tank 1, so that when the anode plate 3 rotates to discharge the sludge, the sludge can be ensured to be effectively discharged, and thus the problem that the sludge falls back into the insulating sludge tank 1 does not occur. The scraper 31 provided in the archimedes spiral can push out the sludge to the outside of the insulating sludge tank 1 when the anode plate 3 rotates, and the phenomenon of sludge clogging and accumulation does not occur.
In which, referring to fig. 1-2, there are several archimedes spirals formed by the doctor blade 31, and the anode plate 3 equally divides the archimedes spirals formed by the doctor blade 31. Specifically, the doctor blade 31 is arranged in an archimedes spiral, that is, the shape of the doctor blade 31 is a constant speed spiral, and since the diameter of the anode plate 3 is preferably 1m, the polar equation of the doctor blade 31 is r=100 a (1+t), where r is the radius value of the doctor blade 31 at each point position, and t is the time for constituting the constant speed spiral. Preferably, the archimedes spiral formed by the scraping blade 31 has four scraping blades 31 which are arranged in the archimedes spiral and equally divided by the circular anode plate 3, when the anode plate 3 drives the scraping blade 31 to rotate to discharge sludge, the scraping blades 31 which are arranged in the archimedes spiral can discharge sludge with an optimal effect, and the effect of preventing the sludge from blocking and accumulating is better. When the anode plate 3 rotates, sludge with low water content at one side close to the anode plate 3 can be discharged along gaps between the scrapers 31 under the action of the scrapers 31, so that the sludge can be discharged efficiently, and the problem that the Archimedes spiral is blocked by the sludge is avoided.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (8)
1. Sludge dewatering device based on electroosmosis principle, its characterized in that: comprises an insulating sludge tank (1) for loading sludge, a dehydration mechanism for carrying out electroosmotic dehydration treatment on the sludge in the insulating sludge tank (1) and a lifting mechanism for lifting the sludge in the insulating sludge tank (1); the insulating sludge tank (1) comprises a side wall and a bottom plate capable of lifting along the side wall, and the lifting mechanism is arranged below the bottom plate; the dewatering mechanism comprises a cathode net control plate (2) arranged on the bottom plate, an anode plate (3) arranged at the upper opening of the insulating sludge tank (1) and flush with the upper opening of the insulating sludge tank (1) and a driving device (4) for driving the anode plate (3) to rotate, current is conducted between the anode plate (3) and the cathode net control plate (2) so as to carry out electroosmotic dewatering treatment on sludge, and a scraper (31) which is arranged in an Archimedes spiral way and is used for discharging the sludge is arranged on one surface of the anode plate (3) which is contacted with the sludge;
the diameter of the anode plate (3) is larger than that of an opening above the insulating sludge tank (1), a plurality of Archimedes spirals are formed by the scrapers (31), the anode plate (3) equally divides the Archimedes spirals formed by the scrapers (31), and the scrapers (31) are made of hard insulating ceramics.
2. The sludge dewatering device according to claim 1, wherein: the dewatering mechanism further comprises a direct current power supply (5) which is used for forming a power supply loop with the anode plate (3), the sludge and the cathode net control plate (2), and the positive end and the negative end of the direct current power supply (5) are respectively connected with the anode plate (3) and the cathode net control plate (2).
3. The sludge dewatering device according to claim 1, wherein: the lifting mechanism comprises a lifting screw (6) connected below the bottom plate, a lifting driving wheel (7) used for driving the lifting screw (6) to lift and move, and a lifting motor (8) used for driving the lifting driving wheel (7) to rotate, wherein the lifting driving wheel (7) is connected with a rotating shaft of the lifting motor (8), and the lifting driving wheel (7) is meshed with the lifting screw (6).
4. The sludge dewatering device according to claim 1, wherein: a liquid collection chamber (9) for collecting permeate obtained from the sludge is also arranged below the bottom plate.
5. The sludge dewatering device according to claim 4, wherein: the bottom of the liquid collection chamber (9) is provided with a vacuum suction module (10) for discharging permeate.
6. The sludge dewatering device according to claim 1, wherein: the driving device (4) is a rotating motor.
7. The sludge dewatering device according to any one of claims 1 to 6, wherein: the cross section of the scraper (31) is triangular.
8. The sludge dewatering device according to claim 7, wherein: the anode plate (3) is round.
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| CN201711418318.1A CN108101338B (en) | 2017-12-22 | 2017-12-22 | Sludge dewatering device based on electroosmosis principle |
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| CN201711418318.1A CN108101338B (en) | 2017-12-22 | 2017-12-22 | Sludge dewatering device based on electroosmosis principle |
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| 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 |
| CN111574004A (en) * | 2020-05-19 | 2020-08-25 | 哈工大机电工程(嘉善)研究院 | Comprehensive experimental device for reduction of oily sludge |
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| JP2000317345A (en) * | 1999-05-11 | 2000-11-21 | Hideo Murakami | Dry separation method and apparatus of heavy metals from heavy metal-containing matter |
| CN102503070A (en) * | 2011-11-11 | 2012-06-20 | 河海大学 | Device for reducing water ratio of sludge |
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| JP2017196574A (en) * | 2016-04-27 | 2017-11-02 | 株式会社エイブル | Electro-osmotic dehydrator |
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| US5114560A (en) * | 1989-08-28 | 1992-05-19 | Nagabhusan Senapati | Apparatus and method for removal of liquids |
| RU2058887C1 (en) * | 1992-06-15 | 1996-04-27 | Кочедыков Анатолий Константинович | Chipping machine |
| BE1006394A3 (en) * | 1992-11-20 | 1994-08-09 | Dredging Int | DEVICE FOR DREDGING OF RIVER BASINS UNDER, AND dredging FOR SUCH DEVICE. |
| CN1047154C (en) * | 1993-06-22 | 1999-12-08 | 林清锋 | Apparatus for treating waste water |
| EP1642868A1 (en) * | 2004-09-29 | 2006-04-05 | Les Technologies Elcotech Inc. | Process and apparatus for treating sludge |
| CN101891365B (en) * | 2010-07-20 | 2011-09-21 | 浙江大学 | Movable-electrode electro-osmosis dewatering device for dewatering urban sewage sludge |
| JP2014104461A (en) * | 2012-11-27 | 2014-06-09 | Koa Gijutsu Kk | Method and equipment for electroosmosis and dehydration of hydrated compound |
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| WO2017155040A1 (en) * | 2016-03-11 | 2017-09-14 | 株式会社エイブル | Electric osmosis dehydration device and method for operating same |
| CN207828082U (en) * | 2017-12-22 | 2018-09-07 | 佛山科学技术学院 | A kind of electro-osmosis sludge dehydration device |
| CN207939113U (en) * | 2018-03-01 | 2018-10-02 | 徐州领君仁驰自动化设备有限公司 | A kind of Novel wire-stripping machine rotary cutter |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000317345A (en) * | 1999-05-11 | 2000-11-21 | Hideo Murakami | Dry separation method and apparatus of heavy metals from heavy metal-containing matter |
| CN102503070A (en) * | 2011-11-11 | 2012-06-20 | 河海大学 | Device for reducing water ratio of sludge |
| JP2017196574A (en) * | 2016-04-27 | 2017-11-02 | 株式会社エイブル | Electro-osmotic dehydrator |
| CN106746465A (en) * | 2017-01-18 | 2017-05-31 | 河南工程学院 | A kind of sludge dewatering system and its mud dewatering method of continuous electro-osmosis |
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