CN206645984U - Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system - Google Patents
Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system Download PDFInfo
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- CN206645984U CN206645984U CN201720297056.7U CN201720297056U CN206645984U CN 206645984 U CN206645984 U CN 206645984U CN 201720297056 U CN201720297056 U CN 201720297056U CN 206645984 U CN206645984 U CN 206645984U
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Abstract
Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system, including power supply, both positive and negative polarity converter and chassis, mounting bracket is provided with above chassis, the electric osmose liquid collecting bin being provided with chassis below mounting bracket, the electro-osmosis reactor that profile is cuboid is installed on mounting bracket, administration injection device is connected with by rope yarn on mounting bracket, using the length direction of electro-osmosis reactor as left and right horizontal direction, the width and length of electric osmose liquid collecting bin are all higher than the width and length of electro-osmosis reactor, the left side and right side of electro-osmosis reactor are open, sludge mouth is offered at the top of electro-osmosis reactor, rear side is hinged with cover plate by hinge at sludge mouth, it is connected on front side of cover plate by hasp with the roof of electro-osmosis reactor；In summary, the utility model combines advanced oxidation by electro-osmosis and sludge is dehydrated, without add substantial amounts of advanced oxidation agent, will not caused by producing the excessive corrosion of battery lead plate heavy metal pollution, technological process it is simple.
Description
Technical field
The utility model belongs to sludge dewatering technical field, and in particular to a kind of transfer electron formula electro-osmosis advanced oxidation is dirty
Mud dewatering system.
Background technology
Sludge be after sewage plant active sludge treatment waste water it is caused it is a kind of be highly soluble in the solid matter of water, wherein containing
Substantial amounts of organic matter, poisonous and harmful substance and some inorganic matter fragments.
Sludge has the characteristics that yield is big, moisture content is high, intractability is big, and not disposing or ineptly handling sludge has
Secondary pollution may be caused and endanger soil, water source, resident and the health of livestock.It has been investigated that the safe disposal of sludge is very
Premise to secondary use is effectively to remove the moisture in sludge, so as to reduce the difficulty of disposal link.
The processing mode that sewage treatment plant is commonly used is to utilize plate and frame filter press, centrifugal dehydrator or belt filter press,
Shallow-layer processing is carried out to sludge by the physics mode such as extruding or centrifuging.Sludge after above-mentioned PROCESS FOR TREATMENT can not meet me substantially
The increasingly strict specific resistance to filtration standard of state.
In view of the foregoing, deep dehydration technology is increasingly becoming the new way of sludge dewatering.Advanced oxidation system Yin Qigao
The water separation capability and shirtsleeve operation mode of effect once turned into the characteristics of research, but due to many actual limitations can not extensive use,
Such as advanced oxidation system is only for moisture content 95%-99% liquid sludge, largely add inorganic medicament it is handled after dirt
Mud can not be utilized directly, and the filtrate of removing could be flowed back after must also carrying out the processing of complexity.
Chinese patent literature《A kind of method for improving dehydrating municipal sludge performance》（Publication number CN105502882A）Announce
A kind of technique of advanced oxidation deep dehydration, added specifically by the municipal sludge that moisture content is 98%-99% or so
Ferrous salt and persulfate are stirred reaction, add quick lime and are nursed one's health with portland cement, are obtained after filtering dehydration
Moisture content 50%-55% mud cake, the technique with the addition of substantial amounts of inorganic conditioner, and the filtrate after processing is in strong basicity；In reality
In the application of border, integrated artistic need to be transformed using the sewage treatment plant of mechanical dehydration, is otherwise difficult to.
Electro-osmosis technology has begun to small range applied to the dry of sludge as a kind of cleaning, efficient deep dehydration technology
Change processing links.But traditional electro-osmosis technology there is also its application is limited the shortcomings that, such as：Carried out using only electro-osmosis technology
During dehydration, the sludge after processing is close to anode-side moisture content 15%-20% lower than cathode side or so；Electro-osmosis anodic
The speed of metal electrode corrosion is exceedingly fast, after corrosion caused heavy metal ion enter in sludge and filtrate can cause it is heavy metal-polluted
Dye.
Electro-osmosis combined dehydration technology has turned into the research main flow of environmental industry.Chinese patent literature《One kind is used for municipal administration
The dewatering system of deeply dehydrating sludge》（Publication number CN204111556U）Disclose a kind of depth of electro-osmosis addition composite conditioner
Spend dewatering type.Specifically, sludge dewatering to 70%-85% is then subjected to electro-osmosis after first adding composite conditioner stirring
Dehydration, 50%-55% is reduced to by moisture content, and the technological process is complicated, and needs to add substantial amounts of inorganic medicament, electro-osmosis
Mud cake lack of homogeneity afterwards, it can not directly carry out follow-up sludge treatment.
Utility model content
The utility model is in order to solve weak point of the prior art, there is provided one kind need not add substantial amounts of advanced oxidation
Agent, will not caused by producing the excessive corrosion of battery lead plate the simple transfer electron formula electro-osmosis of heavy metal pollution, technological process it is high
Level oxidized sludge dewatering system.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：The advanced oxygen of transfer electron formula electro-osmosis
Change sludge dewatering system, including power supply, both positive and negative polarity converter and chassis, be provided with mounting bracket above chassis, position is installed on chassis
Electric osmose liquid collecting bin below mounting bracket, is provided with the electro-osmosis reactor that profile is cuboid on mounting bracket, on mounting bracket
Administration injection device is connected with by rope yarn, using the length direction of electro-osmosis reactor as left and right horizontal direction, electric osmose liquid is collected
The width and length in storehouse are all higher than the width and length of electro-osmosis reactor, and the left side and right side of electro-osmosis reactor are open,
Sludge mouth is offered at the top of electro-osmosis reactor, rear side is hinged with cover plate by hinge at sludge mouth, and cover plate front side is by taking
Button is connected with the roof of electro-osmosis reactor；The inwall of electro-osmosis reactor is provided with filter cloth, the front side wall of electro-osmosis reactor, after
Side wall and bottom offer some permeable holes, correspondingly offer medicine feeding hole on the front side wall and filter cloth of electro-osmosis reactor, add
Medicine hole is provided with plug at least provided with two at medicine feeding hole；The left side and right side of electro-osmosis reactor are respectively equipped with one group of electrode group,
Two arrays of electrodes group is symmetrical set on the center line of electro-osmosis reactor, and the electrode group positioned at left side includes hydraulic cylinder and ferroelectricity
Pole plate, the cylinder body of hydraulic cylinder is fixed on the left side of mounting bracket and its axis is set along left and right horizontal direction, and ferroelectricity pole plate, which slides, to be connected
It is connected in electro-osmosis reactor, the lateral wall of ferroelectricity pole plate coordinates with the inner wall sealing of electro-osmosis reactor, the piston of hydraulic cylinder
Bar is connected to the left surface of ferroelectricity pole plate；Power supply, both positive and negative polarity converter and two pieces of ferroelectricity pole plates are connected by wire；
Administration injection device includes push rod and injection tube, one end closure of injection tube and other end opening, the envelope of injection tube
Stifled end offers circular hole, and push rod, which slides, to be plugged in circular hole and extend into injection tube, the one of the push rod extending into injection tube
End is fixed with piston, and the other end of push rod is provided with the handle outside injection tube, and piston outer rim is slided simultaneously with injection tube inwall
Sealing coordinates, and the side of piston is fixed with rotating shaft, and rotating shaft is coaxially set with injection tube；The opening end of injection tube is provided with stirring and sprayed
Penetrate mechanism.
Internal thread is offered on the inside of the open end of injection tube, stirring injection equipment includes the injector head of cone cylinder structure,
Uniformly offer some spray-holes in injector head side wall, coaxial line is fixed with columnar erecting bed on injector head, outside erecting bed
Side offers external screw thread, and erecting bed is threaded in the open end of injection tube, is fixed with fixed mount in erecting bed, on fixed mount
Fixing axle is fixed with, fixing axle is coaxially set with injection tube, and flabellum, the precession direction court of flabellum are rotatably connected in fixing axle
To injector head.
The open end face of injection tube and the joint of injector head are provided with rubber gasket.
The periphery of cover plate is provided with sealing strip with the joint of electro-osmosis reactor.
Using above-mentioned technical proposal, the utility model has the advantages that：
（1）The utility model is dehydrated using electro-osmosis technical tie-up advanced oxidation, can be to moisture content 75%-99% liquid
After state or semisolid sludge are handled, and significantly reduce the moisture content of sludge, and the sludge after processing can be directly used for
Continuous sludge treatment；
（2）The utility model can be directed to two kinds and presently, there are the wide sludge progress dewater treatment of form（That is moisture content
The relatively low primary dewatering sludge in solid-state of the higher dilute sludge and moisture content that are in a liquid state）；
（3）The utility model only needs to add a small amount of advanced oxidation agent, can be returned after handled electric osmose liquid simple process
Stream；
（4）The utility model using both positive and negative polarity converter go to change two pieces of ferroelectricity pole plates electric situation, not only improve
The uniformity of mud cake, the extent of corrosion of positive plate is also slow down to a certain extent；
（5）The battery lead plate that the utility model uses is ferroelectricity pole plate, ferroelectricity pole plate caused Fe after corrosion2+Can pair plus
The advanced oxidation agent entered is activated, and lifts the deep dehydration effect of sludge, is avoided and was produced in the past using other metal electrodes
Secondary pollution phenomenon；
（6）The utility model has installed hydraulic means additional in the left and right ends of electro-osmosis reactor, effectively improves dehydration
Speed, dehydrating effect have also obtained significant raising；
（7）The utility model offers permeable hole in the outer wall of electro-osmosis reactor, and the structure can be by caused gas
And penetrating fluid is quickly discharged, so as to which rate of water loss be greatly improved, dewatering time is shortened；
（8）The utility model employs electro-osmosis compound advanced oxidation technology processing sludge, and the use of the complex technique
Water separation capability can effectively be lifted, moreover it is possible to a certain degree of dosage for reducing medicament, so as to avoid the generation of secondary pollution, this
It is due to the property that advanced oxidation agent only changes sludge in sludge handling process, destroys the structure of sludge constraint moisture, and it is electric
Process of osmosis is responsible for removing the moisture in sludge, therefore need not add a large amount of inorganic flocculating agents；
（9）The utility model technique is electric by obtaining for both positive and negative polarity converter two pieces of ferroelectricity pole plates of change during electro-osmosis
Situation（After a period of time is dehydrated, the positive pole of ferroelectricity pole plate becomes negative pole, and the negative pole of another piece of ferroelectricity pole plate becomes positive pole）For dirt
Mud treatment effect is greatly improved, and first, the anodic attack of electro-osmosis technology is difficult to avoid that very much, and work out now
Corrosion-resistant material also mostly can not volume production, therefore can effectively slow down anodic attack speed using both positive and negative polarity variable power supply, its
Secondary, in electro-osmosis processing procedure, the moisture in sludge largely moves from anode to negative electrode, and at the end of processing procedure, cathode side is dirty
Mud often not exclusively remains substantial amounts of moisture due to processing, and the sludge of cathode side residual moisture is made using both positive and negative polarity variable power supply
It is processed again, so as to lift treatment effect；
（10）System of the present utility model provides a kind of injection chemicals dosing plant, and the injection chemicals dosing plant is connected to by rope yarn
On mounting bracket, prevent its commonly using when lose；Additionally by the injection chemicals dosing plant to the sludge in electro-osmosis reactor
Carry out dosing so that sludge can fully receive medicament, wherein due to axial direction flowing of the medicament along injection tube, flabellum exists
Rotated under impact by medicament flowing, so as to being stirred by the medicament of flabellum, be revolved because medicament has by flabellum
Turn power, medicament enters injector head and further mixed, and its principle stirred is：Air axial direction is produced according to the driving air of fan
The principle of flowing, in turn, when fluid moves axially through flabellum, flabellum can be driven to rotate；Other injector head is cone cylinder structure,
Spray-hole is arranged in the side wall of injector head, so medicament can scatter when being sprayed from injector head to surrounding, is finally equably sprayed
In sludge, during push rod injection is promoted, injection tube moves back and forth in the fore-and-aft direction of electro-osmosis reactor, reaches more
The effect uniformly injected；Injector head is threaded in the end of injection tube by erecting bed, and be so easy for installation and maintenance flabellum.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the structural representation of administration injection device；
Fig. 4 is the enlarged drawing at I in Fig. 3；
Fig. 5 is the structural representation that flabellum is arranged on erecting bed.
Embodiment
As Figure 1-5, transfer electron formula electro-osmosis advanced oxidation sludge dewatering system of the present utility model, including electricity
Source, both positive and negative polarity converter and chassis 6（Power supply and both positive and negative polarity converter are existing conventional techniques, not shown in figure）, the top of chassis 6
Provided with mounting bracket 7, the electric osmose liquid collecting bin 8 positioned at the lower section of mounting bracket 7 is installed on chassis 6, being provided with profile on mounting bracket 7 is
The electro-osmosis reactor 9 of cuboid, administration injection device 24 is connected with by rope yarn on mounting bracket 7, with electro-osmosis reactor 9
Length direction is left and right horizontal direction, and the width and length of electric osmose liquid collecting bin 8 are all higher than the width and length of electro-osmosis reactor 9
Degree, the left side and right side of electro-osmosis reactor 9 are open, and the top of electro-osmosis reactor 9 offers sludge mouth, at sludge mouth after
Side is hinged with cover plate 11 by hinge 10, and the front side of cover plate 11 is connected by hasp 12 with the roof of electro-osmosis reactor 9；Electric osmose
The inwall of saturating reactor 9 is provided with filter cloth, and front side wall, rear wall and the bottom of electro-osmosis reactor 9 offer some permeable holes
13, medicine feeding hole is correspondingly offered on the front side wall and filter cloth of electro-osmosis reactor 9, and medicine feeding hole is at least provided with two, at medicine feeding hole
Provided with plug 14；The left side and right side of electro-osmosis reactor 9 are respectively equipped with one group of electrode group, and two arrays of electrodes group is on electric osmose transflection
The center line of device 9 is answered to be symmetrical set, the electrode group positioned at left side includes hydraulic cylinder 15 and ferroelectricity pole plate 16, the cylinder of hydraulic cylinder 15
Body is fixed on the left side of mounting bracket 7 and its axis is set along left and right horizontal direction, and ferroelectricity pole plate 16 is slidably connected at electric osmose transflection
Answer in device 9, the lateral wall of ferroelectricity pole plate 16 coordinates with the inner wall sealing of electro-osmosis reactor 9, the bar of piston 4 connection of hydraulic cylinder 15
In the left surface of ferroelectricity pole plate 16；Power supply, both positive and negative polarity converter and two pieces of ferroelectricity pole plates 16 are connected by wire.
Administration injection device 24 includes push rod 1 and injection tube 2, one end closure of injection tube 2 and other end opening, injection tube
2 closure end offers circular hole 3, and push rod 1, which slides, to be plugged in circular hole 3 and extend into injection tube 2, is extend into injection tube 2
One end of push rod 1 be fixed with piston 4, the other end of push rod 1 is provided with the handle 5 outside injection tube 2, the outer rim of piston 4 and
The inwall of injection tube 2 slides and seals cooperation；The opening end of injection tube 2 is provided with stirring injection equipment；
Internal thread is offered on the inside of the open end of injection tube 2, stirring injection equipment includes the injector head of cone cylinder structure
17, some spray-holes 18 are uniformly offered in the side wall of injector head 17, and coaxial line is fixed with columnar erecting bed on injector head 17
19, the outside of erecting bed 19 offers external screw thread, and erecting bed 19 is threaded in the open end of injection tube 2, consolidated in erecting bed 19
Surely there is fixed mount 23, fixing axle 20 is fixed with fixed mount 23, fixing axle 20 is coaxially set with injection tube 2, in fixing axle 20
It is rotatably connected to flabellum 21, the precession direction of flabellum 21 is towards injector head 17.
The open end face of injection tube 2 is provided with rubber gasket 22 with the joint of injector head 17.
The periphery of cover plate 11 is provided with sealing strip with the joint of electro-osmosis reactor 9.
Electro-osmosis co-oxidation dewatering is carried out using the utility model, is comprised the following steps：
（1）, prepare medicament；The medicament of respective concentration, selected height are prepared according to the ratio of selected advanced oxidation agent and sludge
Level oxidant is hydrogen peroxide, sodium peroxide, calper calcium peroxide, sodium peroxydisulfate, potassium peroxydisulfate or ammonium persulfate；（Such as：Control is dirty
The mass ratio of mud and hydrogen peroxide is 1:0.03, or the mass ratio of sodium peroxydisulfate and sludge is 0.02:1）
（2）, load sludge；Hasp 12 is opened, cover plate 11 is opened, loads dirt into electro-osmosis reactor 9 by sludge mouth
Mud, cover plate 11 is closed, locks hasp 12；
（3）, medicament injected into electro-osmosis reactor 9 by administration injection device 24；Injector head 17 is inserted and prepared
In good medicament, handle 5 is then pulled upwards, and handle 5 pulls piston 4 to move up by push rod 1, so as in the work of piston 4
Sucked with lower medicament from spray-hole 18 in injection tube 2, after being filled medicament in injection tube 2, extract the plug 14 at medicine feeding hole, then
Injection tube 2 is inserted in the sludge of electro-osmosis reactor 9, injection tube 2 inserts driving handle 5 while in sludge, makes piston 4 will
Medicament in injection tube 2 sprays from the spray-hole 18 of injector head 17, due to axial direction flowing of the medicament along injection tube 2, flabellum
21 rotate under the impact flowed by medicament, so as to be stirred to the medicament by flabellum 21, because medicament passes through flabellum
21 have revolving force, and medicament enters injector head 17 and further mixed, and injector head 17 is cone cylinder structure in addition, and spray-hole 18 is set
In the side wall of injector head 17, so medicament can scatter when being sprayed from injector head 18 to surrounding, sludge is finally equably injected in
Interior, during the injection of push rod 1 is promoted, injection tube 2 moves back and forth along the longitudinal direction in electro-osmosis reactor 9, reaches more
The effect uniformly injected, after having injected medicament in a medicine feeding hole, another medicine feeding hole of reselection repeats above injection
Journey；After injecting medicament, extract injection tube 2 and get back into plug 14 at medicine feeding hole again；
（4）Electroosmotic dewatering；Turning on the power, two pieces of ferroelectricity pole plates 16 must be electric, at the same time two hydraulic cylinders 15 of startup, and two
Individual hydraulic cylinder 15 promotes two pieces of ferroelectricity pole plates 16 to move towards, and two pieces of ferroelectricity pole plates 16 start to the dirt in electro-osmosis reactor 9
Mud carries out electro-osmosis and extruded, wherein in the presence of both positive and negative polarity converter, two pieces of ferroelectricity pole plates 16 are through anaplasia during certain frequency
Electrode is changed, final sludge deviates from water in the presence of medicament, electro-osmosis and extruding force and produces gas, caused gaseous volatilization
Dissipate, the water of abjection flows out through filter cloth at permeable hole 13, finally flow in electric osmose liquid collecting bin 8；
（5）Collect mud cake；After electroosmotic dewatering, sludge forms mud cake, closes power supply and two hydraulic cylinders 15, unlatching is taken
Button 12 simultaneously opens cover plate 11, is pressed from both sides out the mud cake in electro-osmosis reactor 9 using clamping device.
The present embodiment not makees any formal limitation, every foundation to shape of the present utility model, material, structure etc.
Any simple modification, equivalent change and modification that the technical essence of the utility model is made to above example, belongs to this reality
With the protection domain of new technique scheme.
Claims (4)
1. transfer electron formula electro-osmosis advanced oxidation sludge dewatering system, it is characterised in that：Including power supply, both positive and negative polarity converter and
Chassis, chassis top are provided with mounting bracket, the electric osmose liquid collecting bin being provided with chassis below mounting bracket, are installed on mounting bracket
There is the electro-osmosis reactor that profile is cuboid, administration injection device is connected with by rope yarn on mounting bracket, reacted with electro-osmosis
The length direction of device is left and right horizontal direction, the width and length of electric osmose liquid collecting bin be all higher than electro-osmosis reactor width and
Length, the left side and right side of electro-osmosis reactor are open, offer sludge mouth at the top of electro-osmosis reactor, at sludge mouth after
Side is hinged with cover plate by hinge, is connected on front side of cover plate by hasp with the roof of electro-osmosis reactor；Electro-osmosis reactor
Inwall is provided with filter cloth, and front side wall, rear wall and the bottom of electro-osmosis reactor offer some permeable holes, electro-osmosis reactor
Front side wall and filter cloth on correspondingly offer medicine feeding hole, medicine feeding hole is provided with plug at least provided with two at medicine feeding hole；Electric osmose transflection
Answer the left side of device and right side is respectively equipped with one group of electrode group, two arrays of electrodes group symmetrical is set on the center line of electro-osmosis reactor
Put, the electrode group positioned at left side includes hydraulic cylinder and ferroelectricity pole plate, and the cylinder body of hydraulic cylinder is fixed on left side and its axle of mounting bracket
Line is set along left and right horizontal direction, and ferroelectricity pole plate is slidably connected in electro-osmosis reactor, the lateral wall and electric osmose of ferroelectricity pole plate
The inner wall sealing of saturating reactor coordinates, and the piston rod of hydraulic cylinder is connected to the left surface of ferroelectricity pole plate；Power supply, both positive and negative polarity converter
Connected with two pieces of ferroelectricity pole plates by wire；
Administration injection device includes push rod and injection tube, one end closure of injection tube and other end opening, the closure end of injection tube
Circular hole is offered, push rod, which slides, to be plugged in circular hole and extend into injection tube, and the one end for the push rod extending into injection tube is consolidated
Surely there is piston, the other end of push rod is provided with the handle outside injection tube, and piston outer rim is slided and sealed with injection tube inwall
Coordinate, the side of piston is fixed with rotating shaft, and rotating shaft is coaxially set with injection tube；The opening end of injection tube is provided with stirring spraying machine
Structure.
2. transfer electron formula electro-osmosis advanced oxidation sludge dewatering system according to claim 1, it is characterised in that：Injection
Internal thread is offered on the inside of the open end of cylinder, and stirring injection equipment includes the injector head of cone cylinder structure, in injector head side wall
Some spray-holes are uniformly offered, coaxial line is fixed with columnar erecting bed on injector head, and outer spiral shell is offered on the outside of erecting bed
Line, erecting bed are threaded in the open end of injection tube, and fixed mount is fixed with erecting bed, fixation is fixed with fixed mount
Axle, fixing axle are coaxially set with injection tube, are rotatably connected to flabellum in fixing axle, and the precession direction of flabellum is towards injector head.
3. transfer electron formula electro-osmosis advanced oxidation sludge dewatering system according to claim 2, it is characterised in that：Injection
The open end face of cylinder and the joint of injector head are provided with rubber gasket.
4. transfer electron formula electro-osmosis advanced oxidation sludge dewatering system according to claim 3, it is characterised in that：Cover plate
The joint of periphery and electro-osmosis reactor be provided with sealing strip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720297056.7U CN206645984U (en) | 2017-03-24 | 2017-03-24 | Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system |
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| CN201720297056.7U CN206645984U (en) | 2017-03-24 | 2017-03-24 | Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997948A (en) * | 2019-05-27 | 2020-11-27 | 国家能源投资集团有限责任公司 | Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system |
| CN115164561A (en) * | 2022-06-24 | 2022-10-11 | 广西南宁明源木业有限公司 | Green building materials processing drying-machine with antibacterial function disinfects |
-
2017
- 2017-03-24 CN CN201720297056.7U patent/CN206645984U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997948A (en) * | 2019-05-27 | 2020-11-27 | 国家能源投资集团有限责任公司 | Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system |
| CN115164561A (en) * | 2022-06-24 | 2022-10-11 | 广西南宁明源木业有限公司 | Green building materials processing drying-machine with antibacterial function disinfects |
| CN115164561B (en) * | 2022-06-24 | 2024-05-07 | 广西南宁明源木业有限公司 | Green building materials processing drying-machine with antibacterial function disinfects |
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