CN106006849A - Sewage treatment device and sewage treatment method - Google Patents
Sewage treatment device and sewage treatment method Download PDFInfo
- Publication number
- CN106006849A CN106006849A CN201610535185.5A CN201610535185A CN106006849A CN 106006849 A CN106006849 A CN 106006849A CN 201610535185 A CN201610535185 A CN 201610535185A CN 106006849 A CN106006849 A CN 106006849A
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- CN
- China
- Prior art keywords
- sewage
- ozone
- unit
- waste water
- water container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Abstract
The invention relates to a sewage treatment device. The sewage treatment device comprises an ultrasonic unit, a sewage container, an ozone transport unit and an electrochemical catalytic unit; the ultrasonic unit is provided with a reaction chamber, the sewage container is arranged in the reaction chamber, the ozone transport unit is used for transporting ozone into the sewage container, the electrochemical catalytic unit comprises an anode and a cathode which are arranged in the sewage container, and the surface of the anode is coated with a nanometer coating. The invention further relates to a sewage treatment method. According to the sewage treatment method, the sewage treatment device is adopted to treat sewage.
Description
Technical field
The present invention relates to a kind of sewage-treatment plant and sewage water treatment method, particularly relate to a kind of ultrasonic/ozone compound electric
The device of chemical processing effluent, and the method using this device process sewage.
Background technology
In difficult for biological degradation organic sewage, pollutant are mainly nature non-existent organic compound originally, are difficult to micro-
Biodegradation, is not easy to after being discharged into the natural environment such as water body gradually decrease its content by natural biological self-purification,
They constantly can accumulate in the natural medium such as water body, soil, then enters organism by food chain and is progressively enriched with, finally
Enter human body, be detrimental to health.
Advanced oxidation processes (AOPs) treatment technology can produce, because of it, the hydroxyl radical free radical that oxidability is extremely strong, can effectively divide
Solve the organic pollution in poisonous difficult for biological degradation water, there is the advantage that operating condition is easily controllable, it has also become be dirty for this type of
The main flow treatment technology of water.Ozonation, ultrasonic sound method and electrochemical process are conventional high-level oxidation technology.So
And, there is inevitable inferior position when Ozonation, ultrasonic sound method or this type of sewage of electrochemical process individual processing.Ozone
Oxidizing process selectivity is strong and causes degrading the most thorough；Ultrasonic sound method oxidative degradation is not thorough and energy consumption is the biggest；Electrochemical process is anti-
Answering speed slow, the process to high-concentration sewage is relatively difficult, degrades the most thorough.
Summary of the invention
In view of this, a kind of sewage-treatment plant of necessary offer, this sewage-treatment plant can overcome disadvantage mentioned above.
A kind of sewage-treatment plant, including: a ultrasound unit, this ultrasound unit has a reative cell；One waste water container, should
Waste water container is arranged in described reative cell；One ozone supply unit, this ozone supply unit is in described waste water container
Delivery of ozone；And an electrochemical catalysis unit, this electrochemical catalysis unit includes an anode and a negative electrode, this anode and negative electrode
It is arranged in described waste water container, surface-coated one nano coating of described anode.
A kind of method using above-mentioned sewage-treatment plant to carry out sewage disposal, comprises the following steps: by pending dirt
Water injects in described waste water container；The positive electrical of the anode in described electrochemical catalysis unit and a power supply is connected, negative electrode with
The negative electricity of this power supply connects, and turns on the power switch；Make described ozone supply unit delivery of ozone in waste water container；And beat
Drive the switch of ultrasound unit.
Compared with prior art, sewage-treatment plant and method that the present invention provides include an electrochemical catalysis unit,
Anode surface one layer of nano coating of coating of this electrochemical catalysis unit, owing to nano-particle has bigger surface area and Geng Gao
Catalysis activity, it is possible to produce more hydroxyl radical free radical, and the nano coating that ultrasound unit can make anode surface produce
Hydroxyl radical free radical diffuse quickly in sewage, and with dirty organic pollutants fast reaction, having in sewage can be made
It is more thorough that machine thing is degraded.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the sewage-treatment plant that the embodiment of the present invention provides.
Fig. 2 is the nanometer of the anode surface of the electrochemical catalysis unit in the sewage-treatment plant that the embodiment of the present invention provides
The electron micrograph of coating.
Main element symbol description
| Sewage-treatment plant | 100 |
| Ozone supply unit | 10 |
| Oxygen depurator | 11 |
| Ozonator | 12 |
| Ozone monitoring device | 13 |
| Electrochemical catalysis unit | 20 |
| Anode | 21 |
| Negative electrode | 22 |
| Ultrasound unit | 30 |
| Reative cell | 31 |
| Ultrasonic transducer | 32 |
| Waste water container | 40 |
| Power supply | 50 |
| Ozone diffusion unit | 60 |
| Tail gas treating unit | 70 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the specific embodiments, the sewage-treatment plant 100 provided the present invention is made the most in detail
Describe in detail bright.
Referring to Fig. 1, the sewage-treatment plant 100 that the present invention provides includes an ozone supply unit 10, and an electrochemistry is urged
Change unit 20, a ultrasound unit 30, and a waste water container 40.Described ultrasound unit 30 has a reative cell 31, this reative cell
Equipped with water in 31, described waste water container 40 is arranged in described reative cell 31, and at least part of described waste water container 40 immerses
In the water of reative cell 31.Described electrochemical catalysis unit 20 is arranged in described waste water container 40 and electrically connects with power supply 50.
Described ozone supply unit 10 is used for producing ozone and being transported to by ozone in described waste water container 40.Described ozone
Supply unit 10 includes an oxygen depurator 11, ozonator 12 and an ozone monitoring device 13.Described oxygen depurator
11 are used for purified oxygen, and oxygen after purification enters described ozonator 12 and reacts generation ozone, described ozone monitoring
Device 13 is for monitoring the flow of ozone.Preferably, the ozone concentration that described ozone supply unit 10 produces is 10 ~ 20mg/L, smelly
The flow of oxygen is 0.05 ~ 0.15L/min.
Described electrochemical catalysis unit 20 includes anode 21 and a negative electrode 22.Described anode 21 and the positive pole of power supply 50
Electrical connection, described negative electrode 22 is connected with the negative electricity of power supply 50.Surface-coated one nano coating of described anode 21, it is preferred that
Described nano coating is a nano-oxide coating.It is furthermore preferred that described nano coating is an oxide nano rare earth coating.By
In oxide nano rare earth, there is bigger surface area and higher catalysis activity, it is possible to produce more hydroxyl radical free radical, can
So that organic matter degradation in sewage is more thorough.Preferred 0.5nm～10nm of thickness of described nano coating.
In the present embodiment, the battery lead plate of described anode 21 is titanium plate, and the battery lead plate of described negative electrode 22 is corrosion resistant plate.Described
The surface of anode 21 includes an oxide nano rare earth coating, and this oxide nano rare earth coating is ruthenic oxide (RuO2), two
Yttrium oxide (IrO2), tin ash (SnO2) and the polynary nanometer rare earth oxide of titanium dioxide composition.Fig. 2 is that the present embodiment is received
The surface texture form of rice rare earth oxide coating.Figure it is seen that nano coating smooth surface and have and higher compare table
Area.
The manufacturing process of the anode being coated with oxide nano rare earth coating includes: preparation includes rare earth oxide RuO2、
IrO2And SnO2First mixed solution of nano-particle；In described first mixed solution, add butyl titanate make a masking liquid；
Described masking liquid is brushed on a titanium plate, and to be painted with about the 120 DEG C heating in oxygen atmosphere of the titanium plate of masking liquid about 1 little by this
Time.
Described masking liquid can use alcohothermal method or sol-gal process to prepare.Wherein, alcohothermal method is used to prepare institute
State masking liquid to comprise the following steps: at slaine RuCl3, IrCl3And SnCl3Ethanol solution in add bromination hexadecane base three
First ammonium (HTAB), and be dried about 4h temperature about 120 DEG C and obtain a solid；After described solid ethanol purge, in vacuum
Lower dry about 6h, obtains nano-metal particle Ru, Ir and Sn；Described metallic particles Ru, Ir and Sn are dissolved in ethanol is formed one
Suspension, adds a small amount of butyl titanate (C in described suspension16H36O4Ti) after, by ultrasonic for described suspension about 20min,
Obtain described masking liquid.
Ruthenic oxide (the RuO that described oxide nano rare earth coating is not limited in the present embodiment2), iridium dioxide
(IrO2), tin ash (SnO2) and the polynary nanometer rare earth oxide of titanium dioxide composition.The battery lead plate of described anode and the moon
The battery lead plate of pole is also not limited to titanium plate and corrosion resistant plate in the present embodiment, it is also possible to select other material according to actual needs
Battery lead plate and the battery lead plate of negative electrode as anode.
Described ultrasound unit 30 farther includes a ultrasonic transducer 32, and this ultrasonic transducer is arranged at described ultrasound unit
The both sides of 30.The frequency preferably 40～50kHz of described ultrasound unit 30.The power preferably 200～300W of described ultrasound unit 30.
Ultrasound wave can be added to anode 21 by described ultrasound unit 30 so that the hydroxyl that the nano coating of anode surface produces
Free radical diffuses quickly in sewage, and with dirty organic pollutants fast reaction.What i.e. ultrasound unit 30 produced is ultrasonic
Ripple can promote the mass transport process of dirty organic pollutants.The gas ozoniferous that ultrasound unit 30 can also will enter in sewage
Body pulverizes the microbubble for a diameter of 0.2～0.3 m, increases the contact area of ozone and sewage, improves mass transfer thus improves smelly
Coefficient of oxygen utilization.Ultrasound unit 30 also is able to strengthen the decomposition of ozone, promotes the ozone in cavitation bubble the most permissible without dissolving diffusion
(free radical, free radical is with crumble and fall entrance water body and the organic pollution fast reaction of cavitation bubble, thus accelerates anti-directly to discharge O
Answer process.Ultrasonic and electrochemistry is worked in coordination with during processing sewage, under ultrasonic effect, occurs to be drawn by ozone and oxygen in sewage
The multiple reaction sent out, produces、、、H2O2Sewage disposal process is participated in, significantly etc. multiple Strong oxdiative material
Accelerate water treatment progress.When sewage has oxygen or nitrogen, ultrasonic can be by the oxygen in sewage or nitrogen by ultrasonic
Cavitation produces free radicalOr, shock wave and jet that ultrasonic cavitation produces can make、、Deng free
Base rapidly enters in sewage and reacts with Organic substance, thus improves sewage treating efficiency.It addition, the ultrasonic electrode surface that can also increase is received
The catalysis of rice coating is active and cleans electrode surface, is greatly improved sewage treating efficiency.
Described waste water container 40 is used for holding treatment sewage and electrochemical catalysis unit 20.In the present embodiment, described
The material of waste water container 40 is lucite.
Described power supply 50 is preferably controlled power of direct current, described anode 21 and the spacing of negative electrode 22 and anode 21 and negative electrode
Voltage between 22 can control as required, it is preferred that the spacing of described anode 21 and negative electrode 22 is 1 ~ 5cm；Described anode
Voltage between 21 and negative electrode 22 is 1 ~ 15V.
Described sewage-treatment plant 100 farther includes an ozone diffusion unit 60, and this ozone diffusion unit 60 is arranged at
The inside of described waste water container 40, is used for making ozone rapid dispersion in waste water container 40 uniform.In the present embodiment, described ozone
Diffusion unit 60 is an aeration sand plate.
Described sewage-treatment plant 100 farther includes a tail gas treating unit 70, for processing the Organic substance in sewage
The waste gas produced in catabolic process, and then protection environment.This tail gas treating unit 70 can farther include an ozone monitoring device 13,
Amount for the ozone that monitoring is not decomposed.
Embodiment one
Use after anaerobic-aerobic biological treatment PROCESS FOR TREATMENT cannot the most biodegradable pharmacy waste water, water quality index
For: COD be 350mg/L, TOC be 200mg/L and pH be 5.6, use described sewage-treatment plant 100 to process described pharmacy waste water
Operating condition be: electric current density is 300mA, and supersonic frequency is 45kHz, and ultrasonic power is 250 W；The flow of ozone is
0.1L/min.The most described pharmacy waste water COD clearance is 99%.
Embodiment two
Phenol synthetic water, water quality index is: COD be 400mg/L, pH be 4, die opening is lcm, described sewage-treatment plant
100 operating conditions processing described phenol synthetic water are: electric current density is 300mA, and supersonic frequency is 45kHz, ultrasonic power
For 200W.The most described COD clearance is 98%.
The present invention also provides for a kind of method using above-mentioned sewage-treatment plant 100 to carry out sewage disposal, including following step
Rapid:
S1: pending sewage is injected in described waste water container 40；
S2: the anode 21 in described electrochemical catalysis unit 20 is connected with the positive electrical of power supply 50, negative electrode 22 and power supply 50
Negative electricity connects, and turns on the power switch；
S3: make described ozone supply unit 10 delivery of ozone in waste water container 40；And
S4: open the switch of ultrasound unit 30.
It is appreciated that step S2 can mutually be exchanged to the order of step S4.
In step S2, surface-coated one nano coating of described anode 21, it is preferred that described nano coating is a nano oxygen
Compound coating.It is furthermore preferred that described nano coating is an oxide nano rare earth coating.Owing to oxide nano rare earth has more
Big surface area and higher catalysis activity, it is possible to produce more hydroxyl radical free radical, the organic matter degradation in sewage can be made
More thorough.Preferred 0.5nm～10nm of thickness of described nano coating.
In step S3, the concentration preferably 10 ~ 20mg/L of the ozone that described ozone supply unit 10 produces, described ozone carries
Unit 10 is the flow of delivery of ozone preferably 0.05 ~ 0.15L/min in waste water container 40.
In step S4, the frequency preferably 40～50kHz of described ultrasound unit 30, the power of described ultrasound unit 30 is preferred
200～300W.
Sewage-treatment plant that the embodiment of the present invention provides and sewage water treatment method, due to electrochemical catalytic oxidation method, smelly
Oxygen oxidizing process and ultrasonic oxidation method are all to process waste water by the material of electric energy generation Strong oxdiative performance, have environment compatibility
Good, the advantages such as operating performance is strong, above advanced oxidation wastewater processing technology is combined, can preferably play its collaborative effect
Should, overcome respective defect, solve such as ozone selective oxidation, electrochemistry water electrolysis potential window and ultrasonic
The deficiency of the aspects such as utilization ratio, greatly speeds up free radical and organic reaction process, is effectively improved wastewater degradation efficiency, thorough
End degradation of organic substances.Anode surface one layer of nano coating of coating in the sewage-treatment plant that the embodiment of the present invention provides, due to
Nano-particle has bigger surface area and higher catalysis activity, it is possible to produce more hydroxyl radical free radical, and ultrasonic list
The hydroxyl radical free radical that unit can make the nano coating of anode surface produce diffuses quickly in sewage, and organic dirt with sewage
Dye thing fast reaction, can make the more thorough of organic matter degradation in sewage.
It addition, those skilled in the art can also do other change in spirit of the present invention, these are according to present invention spirit
The change done, all should be included in scope of the present invention.
Claims (10)
1. a sewage-treatment plant, including:
One ultrasound unit, this ultrasound unit has a reative cell；
One waste water container, this waste water container is arranged in described reative cell；
One ozone supply unit, this ozone supply unit is for delivery of ozone in described waste water container；And
One electrochemical catalysis unit, this electrochemical catalysis unit includes an anode and a negative electrode, and this anode and negative electrode are arranged at institute
State in waste water container, surface-coated one nano coating of described anode.
2. sewage-treatment plant as claimed in claim 1, it is characterised in that described nano-oxide coating is a nano rare earth
Oxide coating.
3. sewage-treatment plant as claimed in claim 2, it is characterised in that described oxide nano rare earth coating is by two
Ruthenium-oxide, iridium dioxide, tin ash and the polynary nanometer rare earth oxide coating of titanium dioxide composition.
4. sewage-treatment plant as claimed in claim 1, it is characterised in that the thickness of described nano coating be 0.5nm～
10nm。
5. sewage-treatment plant as claimed in claim 1, it is characterised in that farther including an ozone diffusion unit, this is smelly
Oxygen diffusion unit is arranged at the inside of described waste water container, is used for making ozone be uniformly dispersed in waste water container.
6. sewage-treatment plant as claimed in claim 1, it is characterised in that the spacing of described anode and negative electrode is 1 ~ 5cm.
7. sewage-treatment plant as claimed in claim 1, it is characterised in that described ozone supply unit includes that an oxygen purifies
Device, an ozonator and an ozone monitoring device；Described oxygen depurator is used for purified oxygen, and the oxygen after purification enters institute
Stating ozonator to react generation ozone, described ozone monitoring device is for monitoring the flow of ozone.
8. use the method that any one sewage-treatment plant as described in claim 1-7 carries out sewage disposal, bag
Include following steps:
The positive electrical of the anode in described electrochemical catalysis unit and a power supply being connected, negative electrode is electrically connected with the negative pole of this power supply
Connect, turn on the power switch；
Make described ozone supply unit delivery of ozone in waste water container；
Open the switch of ultrasound unit；And
Pending sewage is injected in described waste water container.
9. the method for sewage disposal as claimed in claim 8, it is characterised in that described ozone supply unit is in waste water container
The flow of delivery of ozone is 0.05 L/min ~ 0.15L/min.
10. the method for sewage disposal as claimed in claim 8, it is characterised in that the frequency of described ultrasound unit is 40 kHz
～50kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610535185.5A CN106006849A (en) | 2016-07-08 | 2016-07-08 | Sewage treatment device and sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610535185.5A CN106006849A (en) | 2016-07-08 | 2016-07-08 | Sewage treatment device and sewage treatment method |
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| Publication Number | Publication Date |
|---|---|
| CN106006849A true CN106006849A (en) | 2016-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610535185.5A Pending CN106006849A (en) | 2016-07-08 | 2016-07-08 | Sewage treatment device and sewage treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143706A (en) * | 2019-06-18 | 2019-08-20 | 中南大学 | A kind of sewage disposal system of modified carbon cloth electro-catalysis persulfate, ozone |
Citations (4)
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|---|---|---|---|---|
| US20120223000A1 (en) * | 2011-03-04 | 2012-09-06 | Lih-Ren Shiue | Vacuum assisted ozonization |
| CN102863110A (en) * | 2012-10-23 | 2013-01-09 | 河海大学 | Device and method for integrally treating refractory organic wastewater |
| CN102992455A (en) * | 2012-12-25 | 2013-03-27 | 清华大学 | Novel three-dimensional electrode device for treating wastewater difficult in biologically degrading |
| CN103130307A (en) * | 2013-03-26 | 2013-06-05 | 重庆大学 | Ozone and photo-electrochemical coupled oxidation water-treatment device and method |
-
2016
- 2016-07-08 CN CN201610535185.5A patent/CN106006849A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120223000A1 (en) * | 2011-03-04 | 2012-09-06 | Lih-Ren Shiue | Vacuum assisted ozonization |
| CN102863110A (en) * | 2012-10-23 | 2013-01-09 | 河海大学 | Device and method for integrally treating refractory organic wastewater |
| CN102992455A (en) * | 2012-12-25 | 2013-03-27 | 清华大学 | Novel three-dimensional electrode device for treating wastewater difficult in biologically degrading |
| CN103130307A (en) * | 2013-03-26 | 2013-06-05 | 重庆大学 | Ozone and photo-electrochemical coupled oxidation water-treatment device and method |
Non-Patent Citations (1)
| Title |
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| 汪多仁: "《绿色纳米化学品》", 31 July 2007, 北京科学技术文献 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143706A (en) * | 2019-06-18 | 2019-08-20 | 中南大学 | A kind of sewage disposal system of modified carbon cloth electro-catalysis persulfate, ozone |
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