CN109534462A - A kind of round tube nested type rotating electrode of electrolytic sewage slot - Google Patents

A kind of round tube nested type rotating electrode of electrolytic sewage slot Download PDF

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Publication number
CN109534462A
CN109534462A CN201910038508.3A CN201910038508A CN109534462A CN 109534462 A CN109534462 A CN 109534462A CN 201910038508 A CN201910038508 A CN 201910038508A CN 109534462 A CN109534462 A CN 109534462A
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China
Prior art keywords
round tube
electrode
tube
nested
cathode
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CN201910038508.3A
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Chinese (zh)
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韦志锋
曾小波
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韦志锋
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Priority to CN201910038508.3A priority Critical patent/CN109534462A/en
Publication of CN109534462A publication Critical patent/CN109534462A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing

Abstract

A kind of round tube nested type rotating electrode of electrolytic sewage slot is isometric with one group, and equal metal circular tube size is not mutually nested in groups for diameter, is fixed in an eradication edge shaft, forms the electrode body of a nested round tube electrode pad+insulation shaft.During electrolysis handles sewage, electrode body slowly rotates, attachment, the accumulation of floccule are not generated on pole plate, clogging, and electrode swivel also has opposite increase liquid phase-electrode pad contact area, increases mass tranfer coefficient, the advantages that promotion electrochemical reaction process, improves reaction efficiency, and occupied area is small.

Description

A kind of round tube nested type rotating electrode of electrolytic sewage slot
Technical field
The present invention relates to one kind to be aoxidized and be sterilized to sewage by electrochemistry, and water body is clarified, and improves sewage treatment effect The round tube nested type rotating electrode of the electrolytic sewage slot of fruit, belongs to electrolytic sewage process field.
Background technique
In recent years, China's rapid economic development, urban wastewater discharge continue to increase, and Urban Water Environment is by serious dirt Dye, effluent problem has been China one severe environmental protection and economic problems.Due to cost of sewage disposal height, financial input is difficult Think after so that wastewater treatment in China rate is very low, the cost and treatment effeciency of sewage treatment greatly restrict sewage treatment industry Development.Therefore, research and development cost is low, and speed is fast, high-efficient sewage treatment technique, new equipment are sewage treatment industry Developing direction.
Electrolytic treatment method of wastewater is exactly the device pole plate in electrolytic cell, makes in waste water harmful substance on yin, yang the two poles of the earth Oxidation and reduction reaction, the method for transforming into innocuous substance to realize purification of waste water occur respectively.
In a variety of metal materials that can be used as electrode, the price of aluminium and iron due to its good dissolubility and relative moderate Most frequently it is chosen as electrolytic bath electrode plate.When industrial wastewater contains plurality of heavy metal pollutant, soda acid pollutant etc., iron is mostly used to make Electrode;And for polluting relatively light sanitary sewage, then mostly use metallic aluminium to make electrode.This is because aluminium electrode water outlet is steady Fixed, cleaning, is able to satisfy higher process demand.Electrolytic cell requires to take appropriate spacing between two-plate, to guarantee that power consumption is less And it is easily installed, runs and repairs.
This water treating method includes that electrochemical action, indirect oxidation and the indirect reduction effect on electrode surface (utilize electricity Substance chemically reacts in the chemical product and water extremely nearby generated), electric flotation act on it is (micro- using what is generated in electrolytic process Small O2、H2The floating of bubble), electric flocculation effect (since the ion that iron or aluminum metal anode dissolve further hydrolyzes, become hydrogen The metal hydroxides activity coagulant not soluble in water such as ferrous oxide or aluminium hydroxide.This substance is in porosity gel knot Structure has surface charge effect and stronger suction-operated, and obvolvent cohesion can be played to the organic or inorganic pollutant in waste water and is made With making pollutant agglomerate and separate from waste water) etc..
The advantages of electrolysis method processing, is: using low-voltage dc power supply, not expending a large amount of chemical agents, grasps at normal temperatures and pressures Make, management is easy;If Pollutants in Wastewater concentration changes, it can guarantee water outlet by adjusting the method for voltage and current Water stabilization;Processing unit occupied area is small.The disadvantage is that: power consumption when handling a large amount of waste water, its dissolubility anode consumption is larger, The anode particle of dissolution forms flocculant as epipole, precipitates suspended solids in sewage, and a large amount of cotton-shaped suspended matters are attached to On electrode plate, cause water flow low, and can be attached to it is more and more on electrode plate, cause flocculation plant between electrode plate therefore Barrier, voltage of electric field is high, frequently alarms, and integral device is caused to deactivate.
Summary of the invention
Big to solve the consumption of dissolubility anode, a large amount of cotton-shaped suspended matters are attached on electrode plate, cause that water flow is low, frequency Between the pole plate that generates electricity the defects of flocculation plant failure, the present invention has creatively invented rotational structure type electrode.Because two-plate takes Appropriate spacing, it is ensured that power consumption is less and is easily installed, runs and repairs.Therefore the present invention takes 2 isometric, diameters The metal circular tube (material is iron or aluminium) to differ in size takes appropriate spacing, and the inside and outside nesting that is parallel to each other constitutes a nested circle Pipe group is fixed in same root insulation shaft, and a round tube connects positive pole, another round tube connects power cathode, constitutes electricity Solve yin-yang the two poles of the earth of slot.Circular pipe type electrode has electrochemical reaction effective area big, large specific surface area, the high spy for the treatment of effeciency Point.Transmission device driving electrodes axis body is rotated in electrolytic cell with low angular speed, and the cylinder of rotation promotes sediment in gravity It is moved down with sliding under the action of circumferential shearing force, finally falls into bottom of pond from cylinder face, sink to storage bucket, thus will not be between cylinder Form absorption, accumulation, clogging.
Since cylinder is rotated with shaft.By quick rotation shaft, the shear flow of strong turbulence is formed, it can be to cylinder electricity High speed souring is caused in pole, remove possible siltation, block it is very convenient.
The technical solution adopted by the present invention to solve the technical problems:
A kind of round tube nested type rotating electrode of electrolytic sewage slot, it is characterized in that: one group of isometric, diameter etc.;Diameter Ascending, the equal cylindrical metal round tube of mutual diameter difference (material is iron or aluminium), size is mutually nested, from inside to outside The composition concentric round tube group of one nesting arranged in parallel, is fixed in an eradication edge shaft, formed a nested round tube electrode pad+ The electrode body for the shaft that insulate;The cylindrical tube quantity is no less than 2;One round tube connects positive pole, another round tube connects Power cathode;When round tube quantity is greater than 4, round tube or alternately connection positive pole, cathode;Or a round tube connects power supply Cathode, remaining round tube connect positive pole;Or it is on the contrary;It, can nested 1~6 and cathode-anode plate between electrolytic cell anode and cathode Being parallel to each other, mutually indepedent, insulation metal tube;Adjacent tube wall is at regular intervals;There are fin or groove on inside and outside tube wall.
Electrode body is immersed in electrolytic sewage slot, drives insulation shaft with lower angular speed in electrolytic cell by transmission device Rotation;Sewage is full of in electrolytic cell, water flow is flowed along the axial direction of shaft in a cell, electrolytic cell is flowed into from shaft one end, from The other end flows out electrolytic cell;Slot bottom has storage bucket.
The invention has the advantages that not generating the attachment of floccule, accumulation on round tube nested type rotating electrode pole plate, block up Fill in phenomenon;Nested type rotating electrode has electrochemical reaction effective area big, large specific surface area, and electrolysis treatment effeciency is high, land occupation The advantages that area is small;Between electrolytic cell anode and cathode, if adding one piece or a series of parallel metal sheet, these metal plates Bipolar electrode is formed towards the aobvious cathodic of anode surface towards the aobvious positive polarity of cathode plane, the electrolytic cell constituted is double Polarity electrolytic cell;The connection of round tube nested type rotating electrode is simple, and operational safety, power consumption substantially reduces, to reach energy saving effect Fruit.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is perspective view of the invention.
Fig. 2 is three pipe electrode pole plate perspective views of the invention.
Fig. 3 is work longitudinal sectional view of the invention.
In figure: 1. electrolytic cell, 2. sewage, 3. center water inlet pipe, 4. reflecting plate, 5. apopore
6. 7. effluent trough 8. of effluent weir, which precipitates dirt 9., stores 10. sludge pipe of bucket
11. 12. shaft of round tube electrode plate, 13. electrode support
14. 15. groove of fin.
Specific embodiment
In the embodiment shown in fig. 3, material be aluminium the present invention (11) cover center sewage water inlet pipe (3) outside, by bracket Support.One pole plate connects positive pole, another pole plate connects power cathode, and circuit passes through the current collection of hollow axle (12) respectively Ring power supply.Sewage (2) is entered in slot (1) from top to bottom by the water inlet pipe (3) for being located at electrolytic cell (1) center, manages lower umbrella-shaped baffle (4) waste water horizontal homogeneous is spread.Sewage (2) stream is limited by four circumferential grooves (1) wall space, is further separated into the electrode of overlapping arrangement (11) parallel clearance space, along the flowing axially upwards of shaft (12) in clearance space.Sewage (2) passes through cylindrical metal The narrow gap of series that pipe group (11) is formed, occurs a series of electrochemical reactions on electrode plate (11) and is cleaned processing, from cylinder The outflow of metal tube group (11) upper end covers effluent weir (6) spilling, defeated to next work into effluent trough (7), then by apopore (5) Sequence.
The sewage (2) flowed into from water inlet (3), stream enters the series length of cylindrical tube group (11) gap formation very respectively Long narrow slot, arc-shaped siding limit the direction of motion of fluid, have the moving particle with axially distinct component velocity Siding is hit in left and right direction.Since the boundary layer viscosity near solid wall surface is big, stall after moving particle collision, then collide Stall again, last movement velocity are reduced to zero, exhaust energy on solid-liquid boundary, precipitate or be adhered on siding.Solid-liquid Borderline region is the main region that suspended matter forms aggregation.
On electrode solid-liquid boundary, electrolysis generates the active oxygen atom O of strong oxidizing property, or connects with the bacterium in sewage Touching eliminates the bacterium in sewage, or oxidative decomposition occurs with the organic matter in sewage, is decomposed into CO2And H2O;Lose electronics Iron or aluminium ion dissolution enter water body, further hydrolyze to form the metallic hydrogen not soluble in water such as ferrous hydroxide or aluminium hydroxide Oxide active flocculant.This substance is in porosity gel structure, has surface charge effect and stronger suction-operated, is made Flocculant is formed for epipole, obvolvent cohesion can be played to the organic or inorganic pollutant in waste water, keep the suspension in sewage solid Body object, pollutant agglomerate precipitating, thus purifying water body.
In excessively entire cylindrical tube group (11) the gap process of sewage flow, electrochemical reaction such as shade companion, is constantly sent out always Raw, pipe group length is longer, and electrochemical reaction is more abundant, and the purification of sewage is more thorough.
Transmission device driving electrodes axis body (12) rotation in electrolytic cell (1) with low angular speed.It is convex on pole plate (11) Rib (14) and groove (15) play stirring action to water body (2).On the one hand stirring action promotes sediment (8) to cut in gravity and radial direction Sliding moves down under the action of shear force, finally falls into bottom of pond from pole plate (11), storage bucket (9) is sunk to, thus will not be in pole plate (11) absorption, accumulation, clogging are generated on;Still further aspect, under the action of stirring, electrode zone and non-electrode region object There is stronger mobility between material, improve mass transfer rate, accelerate electrochemical reaction on electrode surface, indirect oxidation and Reduction reaction, electric flocculation reaction process are connect, reaction efficiency is improved, so have electrochemical action effective affecting acreage big, than Surface area is big, the high feature for the treatment of effeciency.
Since inclination pole plate (11) is rotated with shaft (12).Fin by quick rotation shaft (12), on pole plate (11) (14) and groove (15) is just like the winged blade turned of high speed, forms the shear flow of strong turbulence, can make to inclination pole plate (11) At high speed souring, remove possible siltation, block it is very convenient.
Fig. 2 is three pipe electrode pole plate perspective views of the invention, and the pole plate of inner and outer ends connects the positive and negative anodes of power supply respectively, intermediate Folded metal plate does not connect power supply.Under the induction of the two poles of the earth electric field, the plate towards anode surface aobvious cathodic, towards cathode plane Aobvious positive polarity, forms bipolar electrode.The plate is not powered, but still plays electrolyzing sewage, to reach energy saving effect Fruit.

Claims (1)

1. a kind of round tube nested type rotating electrode of electrolytic sewage slot, it is characterized in that: one group isometric, diameter etc.;Directly Diameter is ascending, and the equal cylindrical metal round tube of mutual diameter difference (material be iron or aluminium), size is mutually nested, by it is interior to The outer composition concentric round tube group of one nesting arranged in parallel, is fixed in an eradication edge shaft, forms a nested round tube electrode pole Plate+insulation shaft electrode body;The cylindrical tube quantity is no less than 2;One round tube connects positive pole, another round tube Connect power cathode;When round tube quantity is greater than 4, round tube or alternately connection positive pole, cathode;Or a round tube connects electricity Source cathode, remaining round tube connect positive pole;Or it is on the contrary;It, can nested 1~6 and anode and cathode between electrolytic cell anode and cathode That plate is parallel to each other, mutually indepedent, insulation metal tube;Adjacent tube wall is at regular intervals;There are fin or groove on inside and outside tube wall.
CN201910038508.3A 2019-01-16 2019-01-16 A kind of round tube nested type rotating electrode of electrolytic sewage slot Pending CN109534462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910038508.3A CN109534462A (en) 2019-01-16 2019-01-16 A kind of round tube nested type rotating electrode of electrolytic sewage slot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910038508.3A CN109534462A (en) 2019-01-16 2019-01-16 A kind of round tube nested type rotating electrode of electrolytic sewage slot

Publications (1)

Publication Number Publication Date
CN109534462A true CN109534462A (en) 2019-03-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111362373A (en) * 2020-03-03 2020-07-03 清华大学 Electric flocculation device and electric flocculation water treatment device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111362373A (en) * 2020-03-03 2020-07-03 清华大学 Electric flocculation device and electric flocculation water treatment device
CN111362373B (en) * 2020-03-03 2021-07-27 清华大学 Electric flocculation device and electric flocculation water treatment device

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