CN106430389A - Defoaming device and method for electrochemical wastewater treatment system - Google Patents
Defoaming device and method for electrochemical wastewater treatment system Download PDFInfo
- Publication number
- CN106430389A CN106430389A CN201610949967.3A CN201610949967A CN106430389A CN 106430389 A CN106430389 A CN 106430389A CN 201610949967 A CN201610949967 A CN 201610949967A CN 106430389 A CN106430389 A CN 106430389A
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- Prior art keywords
- foam
- baffle plate
- froth breaking
- electrolysis bath
- defoaming
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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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)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Removal Of Floating Material (AREA)
Abstract
The invention discloses a defoaming device and method for an electrochemical wastewater treatment system. The defoaming device comprises an electrolytic tank, wherein the electrolytic tank is connected with a water inlet pipe and a water outlet pipe; the defoaming device further comprises a defoaming baffle plate inverted above the electrolytic tank, a gas collecting cover arranged above the defoaming baffle plate in a covering manner, a plurality of spray nozzles distributed on an inner wall of the gas collecting cover, and a slag discharging opening which is connected with a bottom edge of the defoaming baffle plate and extends out of the electrolytic tank; a plurality of through holes are formed in the defoaming baffle plate; a plurality of barbs are arranged on one surface, facing the electrolytic tank, of the defoaming baffle plate; the top of the gas collecting cover is connected with an exhaust pipe; the spray nozzles are connected with a high pressure water pump through a pipeline; the slag discharging opening is connected with a foam collecting pool through the pipeline. The defoaming device and method provided by the invention convert part of foam into liquid by utilizing diversion and interception effects of the baffle plate; foam overflowing from the baffle plate is broken by water drops sprayed by high pressure nozzles; the foam and defoamed liquid return to the electrolytic tank along with water flow; a defoaming agent can be added to the electrolytic tank for treatment.
Description
Technical field
The present invention relates to a kind of sewage treatment equipment, and in particular to a kind of defoaming device of wastewater electrochemical treatment system and
Method.
Background technology
Electrochemistry oxygen metallization processes are widely used in field of waste water treatment, and the wastewater from chemical industry for difficult degradation has well
Treatment effect.But a certain amount of surfactant is usually contained in chemical waste water, can be produced a large amount of in electrolytic process
Foam, working environment can be caused to deteriorate, the problems such as foam overflow even can cause short circuit of polar.
Traditional defoamer includes the fatty acid ester compounded thing of emulsified silicone oil, higher alcohols, polyoxyethylene polyoxypropylene Ji Wusi
Alcohol ether etc., most of is macromolecule organic, can introduce new polluter, and be difficult to remove in waste water, in particular by
When electrochemistry oxygen metallization processes carry out advanced treating, defoamer using wastewater treatment can be caused not up to standard.
The Chinese invention patent application document of such as Application No. 201480041186.3 disclose one kind can expand logical
The defoaming device of the effective scope of the froth breaking effect that crosses defoaming device and bring, reaches froth breaking using drive shaft and froth breaking blade
Effect, this defoaming device complex structure, the scope of application is narrower.The Chinese invention patent of Application No. 201510000919.5
Application documents disclose a kind of mechanical defoaming device, the pump intake of corrosion resisting centrifugal pump is connected with water tank bottom, and pump discharge is upwards
It is venturi tube structure to be communicated to inside the suction inlet of hydraulic ejector, hydraulic ejector, the side inspiration QI KOU of hydraulic ejector
Connect with surge tank, the jet of hydraulic ejector is communicated to defoaming tank, be disposed with inside defoaming tank to remove and indulge in serfing the Net, defoaming tank bottom
Connect with water tank；Surge tank top is provided with suction tube, and the mouth of pipe of suction tube arranges the liquid level positioned at biochemical aeration tank.Can
Realize gas-liquid separation, it is adaptable to biochemical wastewater treatment pond.
All there are elimination not thorough or complex structure and other problems in existing defoaming device.
Content of the invention
For solving the problems, such as prior art, the present invention provide a kind of defoaming device of wastewater electrochemical treatment system and
Debubbling method.
A kind of defoaming device of wastewater electrochemical treatment system, including electrolysis bath, the electrolysis bath is connected with water inlet pipe and goes out
Water pipe, also includes：
Froth breaking baffle plate of the back-off above the electrolysis bath, opens up some through holes, the froth breaking gear on the froth breaking baffle plate
Some agnails are set on the face towards electrolysis bath of plate；
The gas skirt above the froth breaking baffle plate is covered at, the gas skirt top connects exhaustor；
Several shower nozzles being distributed on the gas skirt inwall, the shower nozzle passes through the external high-pressure hydraulic pump of pipeline；
With the bottom of the froth breaking baffle plate along being connected and extending the slag-drip opening outside electrolysis bath, the slag-drip opening is by pipeline even
Connect foam collecting pit.
The defoaming device of the present invention makes part foam be converted into liquid, from baffle plate using water conservancy diversion, the interception function of baffle plate
The globule that spilling foam is sprayed by high-pressure nozzle is broken, and the water after shower nozzle water outlet is liquefied with foam passes through the through hole on froth breaking baffle plate
Being back to electrolysis bath carries out electrolysis process.
Preferably, also include above the froth breaking baffle plate and cover at least one negative pressure in the gas skirt to wear
Kong Guan, the negative pressure perforated pipe connects foam collecting pit by pipeline, the external vacuum pump of the foam collecting pit.
The foam being difficult to remove for high-pressure spraying is collected using negative pressure perforated pipe and is focused on to foam collecting pit, foam
It is the tiny structure of -50～-100Pa in collecting pit, foam at slag-drip opening and negative pressure perforated pipe is collected, using defoamer to being difficult to disappear
The foam for removing is processed.
The defoaming device of the present invention, can carry out three-level defoaming treatment, and the agnail of froth breaking baffle plate carries out one-level froth breaking；High pressure spray
The globule of head sprinkling carries out two grades of froth breakings to the untreated foam of froth breaking baffle plate；The foam being also difficult to eliminate for high-pressure spraying is adopted
In being collected to foam collecting pit with negative pressure perforated pipe, three-level froth breaking is carried out by adding defoamer；Phase between defoaming treatments at different levels
Mutually cooperate with, improve jointly defoaming effectiveness.
With the change of the conditions such as kind of waste water, electrolytic current density, aeration rate, the foam volume that produces in electrolytic process and
The removal of foam complexity is not quite similar.Slower for foam generating rate, foam is easier to shattered to pieces situation, using froth breaking baffle plate
The foam for producing in electrolytic process can be processed；When foam generating rate is very fast, foam volume meeting increasing fast, triggers the bubble
Foam induction apparatuss, start high-pressure nozzle and eliminate foam；When the foam for producing in electrolytic process is in froth breaking baffle plate and the work of high-pressure spraying
With under be still difficult to remove when, start vacuum pump, using perforated pipe, foam is collected defoaming tank and is focused on using defoamer, keep away
Exempt from pollution electrolysis water outlet.
For strengthening the automatization of apparatus of the present invention, it is preferable that be additionally provided with：
Controller；
Foam induction apparatuss, for sensing above the froth breaking baffle plate foam height and transmitting a signal to the controller；
Electromagnetic valve, is respectively arranged on the inlet pipeline of high-pressure hydraulic pump and connects the pipe of negative pressure perforated pipe and foam collecting pit
Lu Shang；
The electromagnetic valve, high-pressure hydraulic pump and vacuum pump are all accessed and are controlled by the controller.
The controller is conventional controller, such as PLC etc..
The high-pressure hydraulic pump adopts high-pressure mini water pump, when foam reaches the setting height(from bottom) of the foam sensor that disappears, opens micro-
Electrolysis bath water outlet is sprayed from shower nozzle by type high-pressure hydraulic pump and corresponding electromagnetic valve, when foam is still suffered from after high-pressure spraying, is entered
One step opens the corresponding electromagnetic valve of negative pressure perforated pipe and foam is collected by negative pressure antipriming pipe and carried out to foam collecting pit by vacuum pump
Process, when foam height is less than the setting height(from bottom) of bubble froth breaking sensor, the corresponding electromagnetic valve of negative pressure perforated pipe, high-pressure mini water pump
And corresponding electromagnetic valve, vacuum pump are turned off.
The froth breaking baffle plate is plastic material, it is preferable that the froth breaking baffle plate is held in the mouth by top board and around top board and with top board
The side plate composition for connecing, side plate is with top board joining place in obtuse angle.Further preferably side plate is pressed from both sides in 120 °～135 ° with top board joining place
Angle.
I.e. the froth breaking baffle plate is in truncated cone-shaped back-off above electrolysis bath, and the agnail on baffle plate can play a part of froth breaking,
Major part foam can remove using high-pressure nozzle spray, the water being sprinkled upon on baffle plate can be back to electrolysis bath from circular hole.Incline
Froth breaking baffle plate can increase baffle plate and foam contacting area, strengthen defoaming effect, while spray can be easy to by foam concentrations to middle part
Defoaming treatment.
Side plate bottom edge is connected with slag-drip opening, it is preferable that the slag-drip opening is consistent with baffle plate to be inclined.Truncated cone-shaped froth breaking baffle plate can
Foam concentrations are made at middle part, increase the middle part shower nozzle water yield and can improve froth breaking speed.
Preferably, the height of the froth breaking baffle plate is be electrolysed groove height L 1/6～1/4, and larger froth breaking space can extend
Foam time, makes foam vanish under the squeezing action of baffle plate.The electrolysis groove height refers to top board to the vertical of side plate bottom edge
Highly.
Agnail is furnished with the froth breaking baffle plate, it is further preferred that the agnail base diameter is 1～3mm, to be highly 10
～20mm, the spacing between adjacent agnail is 1～3mm, and fine and closely woven agnail of arranging can play preferable defoaming effect.Most preferably
Ground, it 2mm, is highly 15mm that the agnail base diameter is, the spacing between adjacent agnail is 2mm.
Some through holes are uniformly furnished with the froth breaking baffle plate, it is further preferred that aperture is 5～10mm, adjacent through-holes
Between spacing be 50～100mm.The foam that the through hole is available for not eliminating passes through, for spraying out during spray froth breaking
The water of the generation after water and bubble burst is back to electrolysis bath.
It is further preferred that the negative pressure perforated pipe is located above the top board of froth breaking baffle plate, the aperture of negative pressure perforated pipe sets
There is the collection QI KOU of expansion, collect QI KOU bottom along the 20～30mm of top board away from froth breaking baffle plate.Foam generating rate is higher than baffle plate froth breaking speed
During rate, foam is collected by collecting QI KOU using negative pressure perforated pipe.
It is further preferred that the foam induction apparatuss are placed at the side plate height 1/2～2/3 of froth breaking baffle plate, foam senses
Device is arranged on the position of froth breaking baffle plate upper middle, and the foam for being easier to rupture can be just eliminated in the presence of baffle plate, such as
Fruit foam height is higher than foam induction apparatuss, and the more difficult removal of foam is described, needs to remove by modes such as spray, negative pressure collections.
It is further preferred that the shower nozzle is uniformly distributed on the inside of gas skirt, the water inlet pipe of all shower nozzles is all and electrolysis bath
Outlet pipe be connected, the shower nozzle maximum stream flow positioned at gas skirt top is 2～3 times of other shower nozzle maximum stream flows.Excellent further
Selection of land, the spacing between adjacent shower nozzle is 100～300mm, it is ensured that whole baffle surface is all within spray coverage rate.
Further, the shape of the shape of the gas skirt lower half and electrolysis bath be adapted, the shape of the first half with disappear
Bubble baffle plate is adapted, and the height at gas skirt distance from top froth breaking baffle plate top is 1/10～1/8 electrolysis groove height.
Preferably, in the electrolysis bath, deflector is provided with, the deflector is obliquely installed, which pushes up edge and froth breaking baffle plate bottom edge
Linking, bottom edge are stretched in electrolysis bath.It is further preferred that deflector is perpendicular with the side plate of the froth breaking baffle plate.
Deflector is provided with froth breaking baffle plate and electrolysis bath junction, deflector is arranged vertically with froth breaking baffle plate, shower nozzle is sprayed
Water outlet passes through froth breaking baffle plate, is back to electrolysis bath along deflector.
Slag-drip opening is provided with the shower nozzle with froth breaking baffle plate joining place.
In the present invention, the most preferably set location of each froth breaking part is：
The height of the froth breaking baffle plate is be electrolysed groove height L 1/5；The negative pressure perforated pipe is located at the top board of froth breaking baffle plate
Top, the aperture of negative pressure perforated pipe is provided with the collection QI KOU of expansion, collects QI KOU bottom along the top board 25mm away from froth breaking baffle plate；The foam
Induction apparatuss are placed at the side plate height 3/5 of froth breaking baffle plate；Spacing between adjacent shower nozzle is 200mm；Gas skirt distance from top disappears
The height at bubble baffle plate top is 1/9 electrolysis groove height.
The present invention also provides a kind of debubbling method of wastewater electrochemical treatment system, is preferably realized by apparatus of the present invention,
Comprise the steps：
The first step, waste water enters electrolysis bath and is electrolysed, and produces foam；
Second step, foam height gradually rises, and eliminates viscosity relatively low foam in part in the presence of froth breaking baffle plate agnail；
3rd step, when froth breaking baffle plate antifoaming speed produces speed less than foam, foam height continues to raise, foam height
During higher than foam induction apparatuss, controller receives signal and opens high-pressure hydraulic pump and its electromagnetic valve on inlet pipeline；
4th step, high-pressure hydraulic pump open after, electrolysis bath water outlet from shower nozzle to electrolysis bath in carry out the froth breaking that sprays water with high pressure；
5th step, the water after shower nozzle water outlet is liquefied with foam is back to electrolysis bath by the through hole on froth breaking baffle plate；
6th step, the part residue of foam strip to froth breaking baffle plate and the foam not being completely eliminated lead under the washing away of current
Cross slag-drip opening and drain into foam collecting pit and processed；
7th step, when the foam for producing cannot be eliminated by the mode of spraying water with high pressure, opens negative pressure perforated pipe external pipeline
On electromagnetic valve and vacuum pump, the tiny structure of 50～-100Pa is provided by vacuum pump in foam collecting pit, foam is passed through negative pressure
Perforated pipe is collected and is processed using defoamer to foam collecting pit；
8th step, when foam height is less than foam induction apparatuss height, foam induction apparatuss send signal to controller, control
The electromagnetism that device is cut out on high-pressure hydraulic pump, high-pressure hydraulic pump inlet pipeline solenoid, vacuum pump and negative pressure perforated pipe external pipeline
Valve, completes froth breaking.
Electrolysis processing parameter in the present invention adopts Conventional process parameters for the wastewater property for processing.
Beneficial effect of the present invention：
（1）Using the baffle plate of reversed acanthoid, foam can rupture on baffle plate and be converted into drop, play the effect of froth breaking；Foam
Drop after vanishing flows back to electrolysis bath from circular hole.
（2）Baffle plate is in platform shape, on the one hand can increase the contact area of foam and baffle plate, using baffle plate de-bubble, on the other hand
Can make foam concentrations at one, be easy to follow-up high-pressure spraying de-bubble.
（3）Using Water spray is electrolysed out, new polluter will not be introduced, also baffle plate can be rinsed, it is to avoid blocking；
Microorganism on baffle plate can also be inactivated using the chlorine residue in waste water, microbial growth is prevented, block baffle plate.
（4）Baffle plate can make a small amount of foam for flowing down downstream return to electrolysis bath with the deflector of electrolysis bath connecting portion, it is to avoid
Water and foam ooze out.
（5）There are froth breaking baffle plate, high-pressure spraying and the triple froth breaking facilities of negative pressure perforated pipe, for foam yield robot control system(RCS)
Start different froth breaking measures, can while defoaming effect is ensured energy saving.
Description of the drawings
Fig. 1 is the structure chart of defoaming device of the present invention.
Fig. 2 is defoaming device piping arrangement of the present invention.
Fig. 3 is the part-structure schematic diagram of froth breaking baffle plate.
Shown in figure, reference is as follows：
1- shower nozzle 2- froth breaking baffle plate 3- gas skirt
4- slag-drip opening 5- electrolysis bath 6- battery lead plate
7- water inlet pipe 8- exhaustor 9- negative pressure perforated pipe
10- foam induction apparatuss 11- deflector 12- outlet pipe
13- foam collecting pit 14- vacuum pump 15- water pipe
16- high-pressure hydraulic pump 17- the first electromagnetic valve 18- circuit
19- self-control box 20- the second electromagnetic valve 21- top board
22- side plate 23- through hole 24- agnail
Specific embodiment
As shown in FIG. 1 to 3, a kind of defoaming device, including electrolysis bath 5, electrolysis bath 5 is conventional electrolysis groove, in electrolysis bath
Put battery lead plate 6, the bottom connection water inlet pipe 7 of electrolysis bath, top connection outlet pipe 12.
One froth breaking baffle plate 2 of back-off above electrolysis bath, froth breaking baffle plate is tipped upside down in truncated cone-shaped above electrolysis bath, by top board 21
Constitute with side plate 22, top board is that circular slab, side plate be connected around top board and with top board, and side plate is blunt with the angle of top board joining place
Angle, preferably 120 °～135 °, vertical height of the top board apart from side plate bottom edge is be electrolysed groove height L 1/6～1/4.
The plate face schematic diagram of froth breaking baffle plate is as shown in figure 3, uniformly open up some through holes 23, direction in the plate face of froth breaking baffle plate
Some agnails 24 are uniformly arranged in the plate face of electrolysis bath side.
Slag-drip opening 4 is obliquely installed, and always, the upper end of slag-drip opening and side plate bottom are along rank for the side plate of angle of inclination and froth breaking baffle plate
Connect, the outside of electrolysis bath is extended in lower end, foam collecting pit 13 is connected by pipeline, foam collecting pit connects a vacuum pump
14.In electrolysis bath, deflector 11 is set, deflector 11 is perpendicular with the side wall of froth breaking baffle plate, upper end is connected froth breaking baffle plate side plate.
The some negative pressure perforated pipes 9 being parallel to each other are set above the top board of froth breaking baffle plate, and the aperture of negative pressure perforated pipe sets
There is the collection QI KOU of expansion, collect QI KOU bottom along the 20～30mm of top board away from froth breaking baffle plate, negative pressure perforated pipe is connected to bubble by pipeline
Foam collecting pit, arranges the second electromagnetic valve 20 on connecting line.
Froth breaking baffle plate and negative pressure perforated pipe outer housing set a gas skirt 3, and the lower half of gas skirt is in and electrolytic cell body one
The cylindrical shape of cause, first half shape are consistent with froth breaking baffle plate in truncated cone-shaped, between gas skirt distance from top froth breaking baffle plate top board
Height be 1/10～1/8 electrolysis groove height, gas skirt top connect exhaustor 8, be uniformly distributed shower nozzle 1 on gas skirt inwall,
Positioned at 2～3 times that the flow of the shower nozzle at top is other shower nozzle flow directions.
All shower nozzles all connect a high-pressure hydraulic pump 16 by water pipe 15（Using high-pressure mini water pump）, the water inlet of the water pump
Pipeline connects outlet pipe 12, arranges the first electromagnetic valve 17 on inlet pipeline.
Foam induction apparatuss 10 are also equipped with the inside of gas skirt, for sensing the height of foam above froth breaking baffle plate, foam sense
Answer at the side plate vertical height 1/2～2/3 installed in froth breaking baffle plate of device；One self-control box 19, self-control box are set outside electrolysis bath
Interior installation automatic controller, the conventional controller such as such as PLC, foam induction apparatuss access the self-control box, will be detected letter
Number controller is transferred to, the first electromagnetic valve, the second electromagnetic valve, high-pressure hydraulic pump and vacuum pump all access self-control box by circuit 18.
The method that apparatus of the present invention carry out froth breaking is as follows：
The first step, waste water enters electrolysis bath 5 and is electrolysed, and produces foam；
Second step, foam height gradually rises, and can eliminate the relatively low bubble of part viscosity in the presence of 2 agnail of froth breaking baffle plate
Foam；
3rd step, when 2 antifoaming speed of froth breaking baffle plate produces speed less than foam, foam height continues to raise, foam height
When degree is higher than foam induction apparatuss 10, self-control box 19 receives signal and opens the first electromagnetic valve 17 and high-pressure hydraulic pump 16；
4th step, high-pressure hydraulic pump open after, electrolysis water outlet from shower nozzle 1 to electrolysis bath in carry out the froth breaking that sprays water with high pressure, round platform
Shape froth breaking baffle plate can make foam concentrations at middle part, increase the middle part shower nozzle water yield and can improve froth breaking speed；
5th step, the water after shower nozzle water outlet is liquefied with foam is back to electrolysis bath by the circular hole on froth breaking baffle plate；
6th step, the part residue of foam strip to froth breaking baffle plate and the foam not being completely eliminated lead under the washing away of current
Cross slag-drip opening 4 and drain into foam collecting pit 13 and processed；
7th step, when the foam for producing cannot be eliminated by the mode of spraying water with high pressure, opens the second electromagnetic valve 20 and vacuum
Pump, foam is collected by negative pressure perforated pipe 9 and is processed using defoamer to foam collecting pit；
8th step, when foam height is less than foam induction apparatuss height, induction apparatuss send signal, automatic control system to robot control system(RCS)
System closes high-pressure mini water pump, the first electromagnetic valve, the second electromagnetic valve and vacuum pump, completes froth breaking.
The case that is embodied as of patent of the present invention is the foregoing is only, but the technical characteristic of patent of the present invention is not limited to
This, any those skilled in the relevant art are in the field of the invention, and the change that is made or modification are all covered in the special of the present invention
Among sharp scope.
Claims (10)
1. a kind of defoaming device of wastewater electrochemical treatment system, including electrolysis bath, the electrolysis bath is connected with water inlet pipe and water outlet
Pipe, it is characterised in that also include：
Froth breaking baffle plate of the back-off above the electrolysis bath, opens up some through holes on the froth breaking baffle plate, the froth breaking baffle plate
Towards on the face of electrolysis bath, some agnails are set；
The gas skirt above the froth breaking baffle plate is covered at, the gas skirt top connects exhaustor；
Several shower nozzles being distributed on the gas skirt inwall, the shower nozzle passes through the external high-pressure hydraulic pump of pipeline；
With the bottom of the froth breaking baffle plate along being connected and extending the slag-drip opening outside electrolysis bath, the slag-drip opening is by pipeline connection bubble
Foam collecting pit.
2. defoaming device according to claim 1, it is characterised in that also include above the froth breaking baffle plate and cover at
At least one negative pressure perforated pipe in the gas skirt, the negative pressure perforated pipe connects foam collecting pit, the bubble by pipeline
The external vacuum pump of foam collecting pit.
3. defoaming device according to claim 2, it is characterised in that be additionally provided with：
Controller；
Foam induction apparatuss, for sensing above the froth breaking baffle plate foam height and transmitting a signal to the controller；
Electromagnetic valve, is respectively arranged on the inlet pipeline of high-pressure hydraulic pump and connects the pipeline of negative pressure perforated pipe and foam collecting pit
On；
The electromagnetic valve, high-pressure hydraulic pump and vacuum pump are all accessed and are controlled by the controller.
4. defoaming device according to claim 3, it is characterised in that the froth breaking baffle plate by top board and around top board and with top
The side plate composition of plate linking, side plate is with top board joining place in obtuse angle.
5. defoaming device according to claim 4, it is characterised in that the height of the froth breaking baffle plate is electrolysis groove height L
1/6～1/4.
6. defoaming device according to claim 4, it is characterised in that the negative pressure perforated pipe is located on the top board of froth breaking baffle plate
Side, the aperture of negative pressure perforated pipe is provided with the collection QI KOU of expansion, collects QI KOU bottom along the 20～30mm of top board away from froth breaking baffle plate.
7. defoaming device according to claim 4, it is characterised in that the foam induction apparatuss are placed in the side plate height of froth breaking baffle plate
At degree 1/2～2/3.
8. defoaming device according to claim 4, it is characterised in that the shower nozzle is uniformly distributed on the inside of gas skirt, is owned
The water inlet pipe of shower nozzle is all connected with the outlet pipe of electrolysis bath, and the shower nozzle maximum stream flow positioned at gas skirt top is other shower nozzle maximums
2～3 times of flow.
9. defoaming device according to claim 1, it is characterised in that be provided with deflector in the electrolysis bath, the deflector
It is obliquely installed, its top edge is connected with froth breaking baffle plate bottom edge, bottom edge is stretched in electrolysis bath.
10. a kind of debubbling method of wastewater electrochemical treatment system, it is characterised in that：Comprise the steps：
The first step, waste water enters electrolysis bath and is electrolysed, and produces foam；
Second step, foam height gradually rises, and eliminates viscosity relatively low foam in part in the presence of froth breaking baffle plate agnail；
3rd step, when froth breaking baffle plate antifoaming speed produces speed less than foam, foam height continues to raise, and foam height is higher than
During foam induction apparatuss, controller receives signal and opens high-pressure hydraulic pump and its electromagnetic valve on inlet pipeline；
4th step, high-pressure hydraulic pump open after, electrolysis bath water outlet from shower nozzle to electrolysis bath in carry out the froth breaking that sprays water with high pressure；
5th step, the water after shower nozzle water outlet is liquefied with foam is back to electrolysis bath by the through hole on froth breaking baffle plate；
6th step, the part residue of foam strip to froth breaking baffle plate and the foam that is not completely eliminated are by row under the washing away of current
Cinder notch drains into foam collecting pit and is processed；
7th step, when the foam for producing cannot be eliminated by the mode of spraying water with high pressure, opens on negative pressure perforated pipe external pipeline
Electromagnetic valve and vacuum pump, are provided the tiny structure of 50～-100Pa, foam are bored a hole by negative pressure by vacuum pump in foam collecting pit
Pipe is collected and is processed using defoamer to foam collecting pit；
8th step, when foam height is less than foam induction apparatuss height, foam induction apparatuss send signal to controller, and controller is closed
The electromagnetic valve for closing on high-pressure hydraulic pump, high-pressure hydraulic pump inlet pipeline solenoid, vacuum pump and negative pressure perforated pipe external pipeline, complete
Become froth breaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949967.3A CN106430389B (en) | 2016-10-27 | 2016-10-27 | Defoaming device and method of wastewater electrochemical treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949967.3A CN106430389B (en) | 2016-10-27 | 2016-10-27 | Defoaming device and method of wastewater electrochemical treatment system |
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| CN106430389A true CN106430389A (en) | 2017-02-22 |
| CN106430389B CN106430389B (en) | 2023-06-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904679A (en) * | 2017-04-21 | 2017-06-30 | 南通中国科学院海洋研究所海洋科学与技术研究发展中心 | A kind of foam separator |
| CN107335255A (en) * | 2017-08-18 | 2017-11-10 | 河北科瑞达仪器科技股份有限公司 | Water route air-vent |
| CN107376428A (en) * | 2017-07-24 | 2017-11-24 | 安徽理工大学 | A kind of defoaming device and method of desulfurization slurry foaming |
| CN108051339A (en) * | 2017-11-30 | 2018-05-18 | 宁波市新铭建设工程测试有限公司 | The test method of asphalt density |
| CN110016765A (en) * | 2019-05-16 | 2019-07-16 | 苏州海蓝环保科技有限公司 | A kind of production line and its production method of deduster filtrate |
| CN111441063A (en) * | 2019-01-17 | 2020-07-24 | 宝山钢铁股份有限公司 | Belted steel alkali wash recovery system |
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| CN106904679A (en) * | 2017-04-21 | 2017-06-30 | 南通中国科学院海洋研究所海洋科学与技术研究发展中心 | A kind of foam separator |
| CN107376428A (en) * | 2017-07-24 | 2017-11-24 | 安徽理工大学 | A kind of defoaming device and method of desulfurization slurry foaming |
| CN107335255A (en) * | 2017-08-18 | 2017-11-10 | 河北科瑞达仪器科技股份有限公司 | Water route air-vent |
| CN108051339A (en) * | 2017-11-30 | 2018-05-18 | 宁波市新铭建设工程测试有限公司 | The test method of asphalt density |
| CN111441063A (en) * | 2019-01-17 | 2020-07-24 | 宝山钢铁股份有限公司 | Belted steel alkali wash recovery system |
| CN111441063B (en) * | 2019-01-17 | 2022-06-24 | 宝山钢铁股份有限公司 | Belted steel alkali wash recovery system |
| CN110016765A (en) * | 2019-05-16 | 2019-07-16 | 苏州海蓝环保科技有限公司 | A kind of production line and its production method of deduster filtrate |
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