CN203741202U - Anode for electro-osmotic sludge dewatering equipment and equipment - Google Patents
Anode for electro-osmotic sludge dewatering equipment and equipment Download PDFInfo
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- CN203741202U CN203741202U CN201420077533.5U CN201420077533U CN203741202U CN 203741202 U CN203741202 U CN 203741202U CN 201420077533 U CN201420077533 U CN 201420077533U CN 203741202 U CN203741202 U CN 203741202U
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- anode
- negative electrode
- filter cloth
- titanium mesh
- osmosis device
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Abstract
The utility model relates to an anode for electro-osmotic sludge dewatering equipment and the equipment. The whole anode is connected end to end to form a ring shape, and the anode is formed by conductively connecting a plurality of titanium metal plates with each other; the titanium metal plates are arc-shaped members or strip members; a conductive protective layer is coated or sintered on the surface of each titanium metal plate. The equipment adopts the anode. The anode and the equipment disclosed by the utility model are low in machining difficulty and favorable for improving the manufacturing efficiency.
Description
Technical field
The utility model relates to a kind of osmosis device for dehydrating sladge waste anode and equipment, is applicable to, with osmosis technology, biological sludge of sewage treatment plant is carried out to deep dehydration processing, belongs to electrochemical techniques sewage sludge technical field.
Background technology
According to the applicant understood, current sewage disposal mainly adopts bio-oxidation treatment process, and this technique can produce a large amount of biochemical sludges in treating processes, and the water ratio of these mud, more than 95～99%, need to carry out sludge dewatering treatment.Conventionally, sewage work adopts traditional mechanism filter-pressing technique to process biochemical sludge, but, this traditional technology can only be down to 80～85% by moisture percentage in sewage sludge, its major cause is: in biochemical sludge flco moisture, account for 70～75% in conjunction with water, interstitial water accounts for 20～25%, also has a small amount of free water and capillary water; Traditional mechanism filter-pressing technique can only remove the interstitial water of mud, is present in the microorganism cells of mud in conjunction with water, only has and will after cell wall breaking, could further be removed.
Based on this present situation, deeply dehydrating sludge processing has been proposed in the industry, its objective is and make sludge reduction; Target be by moisture 80～85% sludge dewatering to water ratio below 60%, sludge volume reduces more than 50%, so that follow-up sludge disposal; The key of deeply dehydrating sludge is to remove the combination water in mud flco, is microorganism cells broken wall and remove in conjunction with the key of water.
Existing biochemical sludge deep dehydration treatment process is as follows:
(1), natural drying process and heat drying technique
Nature drying process utilizes nature thermal source (as sun power) to carry out dehydration and drying processing to mud, this technique needs huge drying bed, the main weather condition that rely on, treatment time is long, foul gas volatilization in treating processes, easily bring secondary pollution, therefore the application of this technique is restricted.
Heat drying technique, by mud heating, makes cell wall breaking, dehydration and drying.This technique power consumption is large, and the heat energy energy consumption of removing every kg water is 3000～4000kJ, equipment complexity, and investment and running cost are also very high, are difficult to application.
(2) chemical conditioning is in conjunction with the technique of high pressure press filtration
Chemical conditioning is mainly first to add lime, molysite etc. in conjunction with the technique of high pressure press filtration, to change mud molecule charge polarity, increases particle hole, improves press filtration characteristic, and then apply high pressure more than 5MPa, filter-press dehydration.This technique needs extra substance, makes structure, composition, the character of mud that variation occur, and brings problems to follow-up sludge disposal, and additive add-on is larger simultaneously, has also increased dewatered sludge amount.
(3) electroosmotic dewatering technique
Electroosmotic dewatering technique is by novel, the high efficiency technical of the mummification of biochemical sludge deep dehydration.
Electroosmotic dewatering technique is based on electrochemical mechanism, and under External Electrical Field, granular solids, liquid phase in mud are done orientation movement for electrode surface, and mud anode moves, and after cell wall breaking, in its born of the same parents, water, to movable cathode, is discharged from and removes through negative electrode.When mud is applied to electric field, need to keep certain pressure, pressure is at 10～100kPa.
This technique dewatering speed is fast, generally in 5～15 minutes, can realize sludge quantity and reduce by half, and moisture content of the cake takes off to the requirement below 60%.The principal element that affects osmosis sludge dewatering has: strength of electric field, pressure, treatment time, sludge blanket thickness.
The generally know-why based on belt filter press of existing osmosis device for dehydrating sladge waste, adopts roller strainer squeezing mode; Equipment, taking roller as anode, is aided with the negative electrode of track structure, and anode and cathode is equipped with strainer outward, and mud, between anode and cathode strainer, applies in anode and cathode under the condition of electric field and carries out press dewatering.In addition, its anode and cathode of some equipment all adopts parallel caterpillar formula structure or other polymorphic structures.
The greatest problem that above osmosis device for dehydrating sladge waste runs into is: anode electrochemical etching problem.
Osmosis sludge dewatering process Electrode reaction is as follows:
Anodic reaction: 2H
2o → 4H
++ O
2+ 4e
-
Cathodic reaction: 2H
2o+2e
-→ 4OH
-+ H
2
Based on this reaction mechanism, the water pH value removing from negative electrode is 12～13; And hydrogen ion is assembled at anode, the contact surface pH that causes anode surface and mud is 1～2, and under such strongly-acid Working environment, the galvanic corrosion of anode is very serious.Adopt existing metallic substance to do anode, corrosion damage speed is exceedingly fast, and this just at present osmosis device for dehydrating sladge waste not can normally continuously work, reason that can not application.But, there is no so far the technique means that can reliably solve osmosis device for dehydrating sladge waste anodic corrosion problem.
Utility model content
Technical problem to be solved in the utility model is: overcome the problem that prior art exists, a kind of osmosis device for dehydrating sladge waste anode is provided, difficulty of processing is little, is beneficial to improve to manufacture efficiency.In addition, also provide the equipment that adopts above-mentioned anode.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of osmosis device for dehydrating sladge waste anode, is characterized in that, described anode entirety is in the form of a ring end to end, and described anode is mutually conducted electricity and is formed by connecting by some titanium meshes; Described titanium mesh is arcuate member or elongate member; The protective layer that described titanium mesh surface also applies, sintering has conduction.
The utility model anode further perfect technical scheme is as follows:
Preferably, described titanium mesh is arcuate member, and described anode is cylindric, and drum diameter is 0.5-2.5 rice.
Preferably, described titanium mesh is elongate member, and described anode is crawler belt ring-type; The length of described each titanium mesh is 0.5-2.5 rice.
Preferably, described titanium mesh has one group of breather hole.
The utility model also provides:
An osmosis device for dehydrating sladge waste that contains aforesaid anode, is characterized in that, comprise at least two rollers, with roller arc negative plate one to one, described each roller is circumferentially with cylindric anode, the titanium mesh of described anode is arcuate member; Between described anode and negative plate, be provided with successively anode filter cloth and negative electrode filter cloth; Between described anode filter cloth and negative electrode filter cloth, form mud and seize space on both sides by the arms.
An osmosis device for dehydrating sladge waste that contains aforesaid anode, is characterized in that, comprises two negative electrode power wheels, two anode power wheels, and on described two anode power wheels, to have crawler belt orificed anode, the titanium mesh of described anode be elongate member to cover; On described two negative electrode power wheels, cover has crawler belt ring cathode; Between described anode and negative electrode, be provided with successively anode filter cloth and negative electrode filter cloth; Between described anode filter cloth and negative electrode filter cloth, form mud and seize space on both sides by the arms.
Preferably, described negative electrode is mutually conducted electricity and is formed by connecting by some stainless steel plates, and described stainless steel plate has one group of permeable hole.
Compared with prior art, main beneficial effect of the present utility model is as follows:
1. whole anode is divided into some microplates, like this can be to each microplate surface-coated, sintered protecting layer, and then assembled anode entirety, thus significantly reduce difficulty of processing, improve and manufacture efficiency, be especially easy to manufacture the cylindric or crawler belt orificed anode of large size.
2. this anode can be used for roller belt squeezing structure, also can be used for crawler belt rotary type filter-press arrangement, applied widely.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Embodiment
With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in further detail.But the utility model is not limited to given example.
Embodiment 1
As shown in Figure 1, the osmosis device for dehydrating sladge waste of the present embodiment is roller belt squeezing structure, comprise two rollers 1, with roller 1 arc negative plate 4 one to one, each roller 1 is circumferentially with anode 2; Between anode 2 and negative plate 4, be provided with successively anode filter cloth 3 and negative electrode filter cloth 5; Between anode filter cloth 3 and negative electrode filter cloth 5, form mud 7 and seize space on both sides by the arms.In addition, between adjacent two rollers 1, be also provided with the power wheel 6 joining with filter cloth.
The entirety of this equipment anode 2 used is in the form of a ring end to end, and anode 2 is mutually conducted electricity and is formed by connecting by some titanium meshes, and titanium mesh is arcuate member, and anode 2 is cylindric, and drum diameter is 0.5-2.5 rice.Particularly, the present embodiment anode is the cylinder of 1 meter of diameter, 2 meters of length, and the titanium mesh that is 2 meters of 45 °, length by 8 radians forms.
The protective layer (not shown) that titanium mesh surface also applies, sintering has conduction.It should be noted that, coating herein, sintering can adopt existing technique to realize, and the utility model does not comprise the improvement to technique.
Titanium mesh has one group of breather hole (not shown), passes through near the gas producing anode.
Embodiment 2
As shown in Figure 2, the osmosis device for dehydrating sladge waste of the present embodiment is crawler belt rotary type filter-press arrangement, comprises that on two negative electrode power wheels 9, two anode power wheel 8, two anode power wheels 8, cover has anode 2; On two negative electrode power wheels 9, cover has crawler belt ring cathode 4, and negative electrode 4 is mutually conducted electricity and is formed by connecting by some stainless steel plates, and stainless steel plate has one group of permeable hole (not shown), discharges near the water of assembling negative electrode; Between anode 2 and negative electrode 4, be provided with successively anode filter cloth 3 and negative electrode filter cloth 5; Between anode filter cloth 3 and negative electrode filter cloth 5, form mud 7 and seize space on both sides by the arms.
The basic structure of the present embodiment anode 2 is identical with embodiment 1 anode, and difference is only: titanium mesh is elongate member, and anode 2 is crawler belt ring-type; The length of each titanium mesh is 0.5-2.5 rice (for example 2 meters).
Above two embodiment dehydration equipments, in the time of operation, apply DC electric field between anode and cathode, and filter cloth is seized mud on both sides by the arms and formed certain pressure, filter cloth motion under roller, guide deflection sheave effect, and mud enters electric field region and carries out electroosmotic dewatering, realizes sludge drying.
The high-pressure compressing technique of being combined with heat drying technique, the chemical conditioning of prior art is compared, and advantage of the present utility model is as follows:
(1) do not need to add chemical agent, non-processor reagent cost completely;
(2) less energy-consumption, is only 10～30% of heat drying art breading energy consumption, has significantly reduced the expense of sludge deep processing mummification;
(3) just to sludge reduction dehydration, do not change character, the composition of mud, do not increase new material, on any follow-up sludge treating method without impact;
(4) treatment time short, processing efficiency is high;
(5) treating processes is clean, non-secondary pollution;
(6) occupation area of equipment is little, and conditional request is not harsh.
Compared with existing osmosis device for dehydrating sladge waste, particular advantages of the present utility model and beneficial effect are as follows:
(1) with arc for circle or the structure of replace curve by straight line, make anode be easy to processing and fabricating, be easy to make the cylindric or crawler belt orificed anode of large size;
(2) anode after being divided into multiple arcuate members or elongate member is easy to its surface to carry out coating sintering processing.The utility model technical conceive:
(1) although metal titanium (Ti) has excellent corrosion resistance nature, be electrochemical industry plate preferred material, but in the saturating dewatering process of sludge electroosmotic, pure titanium pole plate still can not adapt to harsh galvanic corrosion environment, damage very fast; The conductivity of metal titanium is poor, oxidizable simultaneously, can not meet the technical requirements of osmosis equipment anode.The utility model anode does base material with metal titanium, does protective layer modify on its surface, and gained protective layer has good electroconductibility and resistance to electrochemical corrosion energy.This taking titanium as matrix, at the electrode of its surface-coated protective layer, cause varying sizedly owing to being difficult for being corroded, be called dimensional stable anode, i.e. DSA(Dimensional Stable Anode) anode.
(2) principal element that affects osmosis sludge dewatering has: voltage gradient, mechanical pressure, sludge blanket thickness, treatment time.Voltage gradient can regulate by additional power source, and the control of mechanical pressure, sludge blanket thickness adopts existing belt filter press equipment can ensure.The treatment time of mud in electric field generally needs 5～15 minutes, needs roller diameter, length enough large for the dehydration equipment of roller filter-press arrangement form, the maximum difference of Here it is conventional belt filter press and osmosis belt filter-pressing device.In the time that large-sized roller does sealer processing again, just make and brought very big difficulty to roller.For crawler belt rotary type filter-press arrangement, there is too the problem of manufacture difficulty.
Large size anode is divided into some microplates by the utility model, then respectively to microplate surface-coated, sintered protecting layer, and then assembled anode entirety, thereby solve the large difficult problem of large size Anode machining intractability.
Claims (7)
1. an osmosis device for dehydrating sladge waste anode, is characterized in that, described anode entirety is in the form of a ring end to end, and described anode is mutually conducted electricity and is formed by connecting by some titanium meshes; Described titanium mesh is arcuate member or elongate member; The protective layer that described titanium mesh surface also applies, sintering has conduction.
2. osmosis device for dehydrating sladge waste anode according to claim 1, is characterized in that, described titanium mesh is arcuate member, and described anode is cylindric, and drum diameter is 0.5-2.5 rice.
3. osmosis device for dehydrating sladge waste anode according to claim 1, is characterized in that, described titanium mesh is elongate member, and described anode is crawler belt ring-type; The length of described each titanium mesh is 0.5-2.5 rice.
4. according to the osmosis device for dehydrating sladge waste anode described in claim 1 or 2 or 3, it is characterized in that, described titanium mesh has one group of breather hole.
5. an osmosis device for dehydrating sladge waste that contains anode described in claim 1 to 4 any one, it is characterized in that, comprise at least two rollers, with roller arc negative plate one to one, described each roller is circumferentially with cylindric anode, the titanium mesh of described anode is arcuate member; Between described anode and negative plate, be provided with successively anode filter cloth and negative electrode filter cloth; Between described anode filter cloth and negative electrode filter cloth, form mud and seize space on both sides by the arms.
6. an osmosis device for dehydrating sladge waste that contains anode described in claim 1 to 4 any one, it is characterized in that, comprise two negative electrode power wheels, two anode power wheels, on described two anode power wheels, to have crawler belt orificed anode, the titanium mesh of described anode be elongate member to cover; On described two negative electrode power wheels, cover has crawler belt ring cathode; Between described anode and negative electrode, be provided with successively anode filter cloth and negative electrode filter cloth; Between described anode filter cloth and negative electrode filter cloth, form mud and seize space on both sides by the arms.
7. the osmosis device for dehydrating sladge waste of wanting anode described in 6 according to right, is characterized in that, described negative electrode is mutually conducted electricity and is formed by connecting by some stainless steel plates, and described stainless steel plate has one group of permeable hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077533.5U CN203741202U (en) | 2014-02-24 | 2014-02-24 | Anode for electro-osmotic sludge dewatering equipment and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077533.5U CN203741202U (en) | 2014-02-24 | 2014-02-24 | Anode for electro-osmotic sludge dewatering equipment and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN203741202U true CN203741202U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420077533.5U Expired - Fee Related CN203741202U (en) | 2014-02-24 | 2014-02-24 | Anode for electro-osmotic sludge dewatering equipment and equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140189A (en) * | 2014-08-20 | 2014-11-12 | 湖北合加环境设备有限公司 | Elastic cathode ring for electroosmosis 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 |
| CN114085026A (en) * | 2021-11-08 | 2022-02-25 | 潍坊中泰环保科技有限公司 | Multiple-effect sludge drying equipment |
-
2014
- 2014-02-24 CN CN201420077533.5U patent/CN203741202U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140189A (en) * | 2014-08-20 | 2014-11-12 | 湖北合加环境设备有限公司 | Elastic cathode ring for electroosmosis 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 |
| CN106746465B (en) * | 2017-01-18 | 2023-02-28 | 河南工程学院 | Continuous electroosmosis sludge dewatering system and sludge dewatering method thereof |
| CN114085026A (en) * | 2021-11-08 | 2022-02-25 | 潍坊中泰环保科技有限公司 | Multiple-effect sludge drying equipment |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20190224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |