CN115108625A - Organic pollutant wastewater treatment device and wastewater treatment method - Google Patents
Organic pollutant wastewater treatment device and wastewater treatment method Download PDFInfo
- Publication number
- CN115108625A CN115108625A CN202210946847.3A CN202210946847A CN115108625A CN 115108625 A CN115108625 A CN 115108625A CN 202210946847 A CN202210946847 A CN 202210946847A CN 115108625 A CN115108625 A CN 115108625A
- Authority
- CN
- China
- Prior art keywords
- wastewater
- plasma
- voltage electrode
- gas
- unit
- 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.)
- Pending
Links
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 46
- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 39
- 239000002351 wastewater Substances 0.000 claims abstract description 129
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000013543 active substance Substances 0.000 claims abstract description 20
- 238000000889 atomisation Methods 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 64
- 230000007246 mechanism Effects 0.000 claims description 42
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 239000007921 spray Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 239000002638 heterogeneous catalyst Substances 0.000 claims description 4
- 239000002815 homogeneous catalyst Substances 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 5
- 239000011149 active material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/4608—Treatment of water, waste water, or sewage by electrochemical methods using electrical discharges
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The application discloses an organic pollutant wastewater treatment device and a wastewater treatment method, wherein the device comprises a plasma generation part, an atomization unit and a cooling unit; the plasma generating part is used for generating plasma through high-voltage discharge; the atomization unit is used for atomizing the wastewater into liquid drops, and the liquid drops are mixed with active substances in the plasma released by the plasma generation part; the cooling unit is used for cooling the waste water and spraying the cooled waste water to the plasma generation part. The organic pollutant wastewater treatment device can also comprise at least one of the following devices: the waste water circulation unit, the air supply and gas circulation unit and the catalysis unit form an integrated design. The application has high integration degree, overcomes the defect that the prior art does not consider multi-factor coupling influence, can improve the utilization efficiency of active substances, and is more environment-friendly.
Description
Technical Field
The application relates to a wastewater treatment device and a wastewater treatment method, belongs to the field of environmental protection application technology treatment, and particularly relates to an organic pollutant wastewater treatment device and a wastewater treatment method.
Background
The organic pollutant waste water treatment technology has great significance to the field of environmental protection and has important application prospect. The plasma wastewater treatment as an advanced oxidation technology is a hotspot and a difficulty of current research, and how to improve the yield of active substances in plasma and improve the utilization rate of the active substances under the condition of the same energy consumption aiming at the wastewater treatment of organic pollutants is two important aspects of pushing the plasma wastewater treatment technology to engineering application.
Researchers have generally focused on studying the effects of a single factor on plasma parameters and have only suggested individual measures to improve the performance of plasma treatment wastewater. However, the plasma parameters are complex and are influenced by coupling of various factors, so that in practical engineering application, an integrated design capable of simultaneously applying various technical means is lacked, the integration difficulty is high, and the excellent characteristics of the plasma are far from being fully exerted.
Disclosure of Invention
The invention aims to provide a device for efficiently treating organic pollutant wastewater based on multi-factor coupling. Another object of the present invention is to provide a method for treating organic pollutant wastewater.
The organic pollutant wastewater treatment device comprises: a plasma generating part, an atomizing unit and a cooling unit; wherein the content of the first and second substances,
the plasma generating part is used for generating plasma through high-voltage discharge;
the atomization unit is used for atomizing the wastewater into liquid drops, and the liquid drops are mixed with active substances in the plasma released by the plasma generation part;
and the cooling unit is used for cooling the waste water and spraying the cooled waste water to the plasma generation part.
Preferably, the plasma generating portion includes a high voltage electrode, the high voltage electrode is connected with a positive electrode of a high voltage power supply, the high voltage electrode is wrapped with a blocking medium, a low voltage electrode is arranged on the periphery of the blocking medium, a gap is left between the blocking medium and the low voltage electrode, so that waste water and gas can pass through the gap, and the low voltage electrode is grounded with a negative electrode of the high voltage power supply.
Preferably, the high voltage electrode, the barrier medium and the low voltage electrode are coaxial.
Preferably, the low voltage electrode is cylindrical.
Preferably, the blocking medium is made of an insulating material, a medium blocking discharge structure is formed, and large-area uniform plasma is generated under the atmospheric pressure condition, so that the isolation between the high-voltage electrode and the low-voltage electrode is improved, and the effective generation of the plasma between the electrodes is ensured.
Preferably, the high-voltage power supply adopts a pulse type or an alternating current type. The pulse type high-voltage power supply has the advantages of small volume, low energy consumption and high active substance yield; the alternating current type high-voltage power supply has large power and low manufacturing cost.
Preferably, the atomization unit comprises an ultrasonic atomizer, and the ultrasonic atomizer is connected with a power supply.
Further, the organic pollutant wastewater treatment device further comprises a wastewater circulating unit for pumping wastewater into the plasma generating part, and the wastewater forms a water curtain when flowing through the inner wall of the plasma generating part. The water curtain is formed between the high-voltage and low-voltage electrodes, and air is also provided, so that a gas-liquid two-phase discharge structure is formed, and the waste liquid treatment efficiency is improved.
Preferably, the wastewater circulating unit comprises a first circulating water pump, a flow meter and a first valve, wherein the first circulating water pump is arranged on a passage between the wastewater and the plasma generating part, the flow meter is used for detecting the flow rate of the wastewater, and the first valve is used for controlling the opening and closing of the passage.
Preferably, the water curtain is formed on an inner wall of a low voltage electrode of the plasma generating part.
Preferably, the wastewater circulating unit further comprises a flow guide mechanism, wherein a gap is reserved between the flow guide mechanism and the low-voltage electrode of the plasma generating part, and the flow guide mechanism is used for guiding the wastewater introduced into the passage to form a water film.
Preferably, the flow guide mechanism is coaxial with the plasma generation part.
Further, the organic pollutant wastewater treatment device also comprises an air supply and gas circulation unit which is used for inputting gas to the plasma generation part.
Preferably, the gas comprises at least one of: air, oxygen, ozone, inert gases.
Preferably, the gas make-up and gas circulation unit comprises: and the input end of the gas pressurization mechanism is connected with the reaction box comprising the plasma generation part and is used for pressurizing the gas in the communication gas path and then inputting the gas into the plasma generation part. The reaction box is a closed space isolated from the outside atmosphere.
Preferably, a gas flow meter is provided in a gas passage between the gas pressurizing mechanism and the plasma generating portion.
Preferably, the output end of the gas pressurization mechanism is connected with a flow guide mechanism, and gas is introduced into the plasma generation part through a gas hole arranged on the flow guide mechanism.
Preferably, the reaction box is internally provided with waste water at the bottom, and the atomization unit is arranged in the reaction box.
Preferably, a catalytic unit is further arranged in the wastewater, and the catalytic unit is used for adsorbing pollutant molecules in the wastewater and activating active substances.
Preferably, the catalytic unit comprises a homogeneous and/or heterogeneous catalyst, capable of adsorbing contaminant molecules and effectively activating active species.
Preferably, the catalyst can be mixed in the wastewater and can also be supported, so that the use efficiency of the active substances is improved.
Preferably, a partition board is arranged in the reaction box, the plasma generating part is arranged at the lower end of the partition board, and the partition board, the four walls and the bottom surface of the reaction box form a reaction area.
Preferably, the cooling unit comprises a first circulating water pump, a water cooling machine and a spray header which are connected in sequence, and a first valve is arranged on a passage connecting the water cooling machine and the spray header; wherein the content of the first and second substances,
the water cooling machine is used for cooling the wastewater pumped by the first circulating water pump;
the first valve is used for controlling the cooled wastewater output by the water cooling machine to enter the spray header;
and the spray header is used for spraying the cooled waste liquid to the low-voltage electrode of the plasma generation part.
The organic pollutant wastewater treatment method comprises the following steps:
generating plasma by utilizing a discharge process between the high-voltage electrode and the low-voltage electrode;
atomizing the wastewater into liquid drops, wherein the liquid drops are mixed with active substances in the plasma;
and cooling the wastewater, spraying the wastewater to the low-voltage electrode, and cooling the low-voltage electrode.
Further, the organic pollutant wastewater treatment method further comprises the following steps: and continuously introducing gas into the reaction area of the plasma.
Further, the organic pollutant wastewater treatment method further comprises the following steps: adding a homogeneous or heterogeneous catalyst to the wastewater.
Further, the organic pollutant wastewater treatment method further comprises the following steps: and circularly flowing the wastewater into the reaction area of the plasma, so that the wastewater forms a water curtain when flowing through the inner wall of the low-voltage electrode.
A wastewater treatment method based on the organic pollutant wastewater treatment device comprises the following steps:
a plasma generating section for generating plasma;
the atomization unit atomizes the wastewater into liquid drops, and the liquid drops are mixed with active substances in the plasma released by the plasma generation part;
the cooling unit cools the wastewater and then sprays the cooled wastewater to the plasma generation part.
Preferably, the cooling unit cooling the waste water and spraying the cooled waste water to the plasma generation part includes:
the first circulating water pump pumps the wastewater to be conveyed to a water cooler;
the water cooling machine cools the wastewater, and the output of the water cooling machine is controlled by a first valve to enter the spray header;
the shower head sprays the cooled waste liquid to the low-voltage electrode of the plasma generation part.
Further, the wastewater treatment method further comprises: the waste water circulating unit pumps waste water into the plasma generating part and forms a water curtain when flowing through the inner wall of the plasma generating part.
Preferably, the wastewater circulating unit drawing wastewater into the plasma generating part includes:
the first circulating water pump pumps the waste water and leads the waste water into the diversion mechanism;
the flow meter detects the flow of the extracted wastewater, and the opening and closing of the wastewater circulating passage are controlled through the first valve.
Further, the wastewater treatment method further comprises: the gas supply and circulation unit supplies gas to the plasma generation part.
Preferably, the gas supplementing and circulating unit inputting gas to the plasma generating part includes: the gas pressurizing mechanism pressurizes the gas in the reaction box of the plasma generating part and inputs the pressurized gas into the plasma generating part.
Furthermore, the gas output by the gas pressurization mechanism is introduced into the plasma generation part through a gas hole arranged on the flow guide mechanism.
Further, the wastewater treatment method further comprises: the catalytic unit adsorbs pollutant molecules in the wastewater to activate active substances.
The beneficial effects that this application can produce include:
1. the utility model provides an atomizing unit atomizes organic pollutant waste water into the droplet, and then dispersion is in the reaction zone, because droplet surface area is bigger, has strengthened waste water and plasma active material's mixing, has improved plasma active material's utilization efficiency.
2. The cooling unit of this application utilizes refrigerated waste water, and the low voltage electrode in to the plasma produces the portion and cools down the processing to reduced the decomposition of being heated of ozone, improved ozone output.
3. This application makes waste water form the water film through setting up water conservancy diversion mechanism, forms the water curtain then when downflow along the low pressure electrode inner wall, forms the gas-liquid two-phase and flows, and it has following advantage:
(1) the plasma active product has high yield and high gas ionization degree;
(2) the active product can directly act on the wastewater, and the utilization rate is high;
(3) ultraviolet rays in the plasma can effectively play a role in catalysis, and the wastewater treatment efficiency is high.
4. This application is through setting up tonifying qi and gas circulation unit, to reaction zone make-up gas, can effectively improve active substance output.
Furtherly, this application has set up the baffle in the reaction box for baffle and reaction box four walls and ground form comparatively inclosed reaction zone, the active gas that the setting up of tonifying qi and gas circulation unit made the reaction zone can cyclic utilization, has improved the utilization ratio, has also avoided simultaneously because of the secondary pollution of the atmospheric environment that gaseous loss income atmosphere leads to, environmental protection more.
5. The catalytic unit can adsorb pollutant molecules, effectively activate active substances and improve the utilization efficiency of the active substances.
6. On the whole, the method comprehensively considers the coupling influence of multiple factors, forms an integrated design, has simple and easy structure, greatly improves the treatment efficiency of the organic pollutant wastewater, can reduce energy consumption, can be industrialized and has wide application prospect.
Drawings
FIG. 1 is a schematic structural view of a plasma generating part according to an embodiment of the present invention;
FIG. 2 is a schematic view of a wastewater recycling unit and wastewater recycling process according to an embodiment of the present invention;
FIG. 3 is a schematic view of a cooling unit and a cooling process according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an atomizing unit according to an embodiment of the present invention;
FIG. 5 is a schematic view of a gas make-up and gas circulation unit and a gas make-up circulation process according to one embodiment of the present invention;
FIG. 6 is a schematic view of an apparatus for treating organic pollutant wastewater according to an embodiment of the present invention.
List of parts and reference numerals: 1-a high voltage electrode; 2-a barrier dielectric; 3-a low voltage electrode; 4-wastewater; 5-a first circulating water pump; 6-a flow meter; 7-a first valve; 8-a separator; 9-a flow guide mechanism; 10-the gap between the flow guide mechanism and the cylindrical low-voltage electrode; 11-a second circulating water pump; 12-a water cooling machine; 13-a second valve; 14-a shower head; 15-ultrasonic atomizer; 16-a power supply; 17-wastewater droplets; 18-a gas pressurization mechanism; 19-a gas flow meter; 20-pores; 21-a catalyst; 22-a high voltage power supply; 23-ground.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
The organic pollutant wastewater treatment device comprises: a plasma generating part, a cooling unit and an atomizing unit; wherein the content of the first and second substances,
the plasma generating part is used for generating plasma through high-voltage discharge;
the atomization unit is used for atomizing the wastewater into liquid drops, and the liquid drops are mixed with active substances in the plasma released by the plasma generation part;
and the cooling unit is used for cooling the waste water and spraying the cooled waste water to the plasma generation part.
The organic pollutant wastewater treatment method comprises the following steps:
generating plasma by utilizing a discharge process between the high-voltage electrode and the low-voltage electrode;
atomizing the wastewater into liquid drops, wherein the liquid drops are mixed with active substances in the plasma;
and cooling the wastewater and spraying the wastewater to the low-voltage electrode.
Example one
Referring to fig. 1, a schematic diagram of a preferred plasma generating portion is shown.
The plasma generating part comprises a high-voltage electrode 1, a barrier medium 2 and a low-voltage electrode 3. The high-voltage electrode 1 is wrapped with a layer of insulating material as a barrier medium 2. The arrangement of the blocking medium 2 improves the isolation between the high-voltage electrode 1 and the low-voltage electrode 3, and ensures the effective generation of plasma between the electrodes. The low-voltage electrode 3 is arranged on the periphery of the blocking medium 2, and a gap is reserved between the low-voltage electrode and the blocking medium 2, so that waste water and air can pass through the low-voltage electrode.
The low-voltage electrode 3 is cylindrical, so that the high-voltage electrode and the low-voltage electrode can form a coaxial structure, and plasma active substances are wrapped in a reaction region, so that high-efficiency utilization is realized, the discharge area is large, and the engineering applicability is strong.
The high-voltage electrode 1 is connected with the anode of a high-voltage power supply 22, and the cathode of the high-voltage power supply 22 and the low-voltage electrode 3 are grounded together 23, so that the electricity utilization safety of the whole device is ensured.
The high-voltage power supply adopts a pulse type or an alternating current type.
Example two
The device comprises a plasma generating part, a cooling unit and an atomizing unit, and also comprises a waste water circulating unit which is used for pumping waste water into the plasma generating part, wherein the waste water forms a water curtain when flowing through the inner wall of the plasma generating part.
The wastewater circulating unit shown in fig. 2 comprises a first circulating water pump 5, a flow meter 6 and a first valve 7, wherein the first circulating water pump 5 is used for pumping wastewater, the flow meter 6 is used for detecting the flow of the wastewater, and the first valve 7 is used for controlling the opening and closing of the passage.
The wastewater circulation unit further comprises a diversion mechanism 9. The reaction box is divided into an upper layer and a lower layer by a clapboard 8 as shown in the figure, a flow guide mechanism 9 is arranged on the upper layer, and a gap 10 is reserved between the flow guide mechanism and the low-voltage electrode of the plasma generation part. The flow guide mechanism 9 is of a structure with an upper cylinder and a lower cylinder, wherein the diameter of the upper cylinder is larger than that of the lower cylinder, and the upper cylinder is internally provided with a through air hole 20 which can lead gas to be introduced into a plasma region. The upper end cylinder and the lower end cylinder are integrally processed, and a chamfer angle can be arranged on the transition part. The lower end cylinder is provided with three or more convex structures which are embedded into the inner wall of the low-voltage electrode 3 to form close fit with the low-voltage electrode, and a gap 10 is formed between the part of the lower end cylinder except the convex structure and the inner wall of the low-voltage electrode, so that water flow and air flow can pass through. The difference between the radius of the upper end cylinder and the lower end cylinder is the thickness of the water curtain. The upper end of the low-voltage electrode 3 is provided with a clamping ring, the low-voltage electrode 3 is in threaded connection with the clamping ring, and the periphery of the clamping ring is pressed on the partition plate 8 to form fixation. The partition plate 8 is used for receiving wastewater flowing down from the first valve 7, and gradually submerges the gap of the flow guide mechanism 9 along with the rising of the water level of the wastewater carried on the partition plate 8, at the moment, the wastewater can enter the gap by the gravity of the wastewater, and a water curtain is formed on the low-voltage electrode 3.
The organic pollutant wastewater treatment method of the invention also comprises a wastewater circulation process, which comprises the following steps:
and the first circulating water pump 5 is used for pumping the wastewater into the plasma generating part to form a wastewater circulating water path. On the wastewater circulating water path, the flow of wastewater is monitored by using a flowmeter 6, the opening and closing of the water path are controlled by using a first valve 7,
the waste water 4 enters a gap 10 between the flow guide mechanism 9 and the cylindrical low-voltage electrode and flows down along the inner wall of the low-voltage electrode 3 to form a water curtain.
EXAMPLE III
An organic pollutant wastewater treatment device comprises a plasma generation part, an atomization unit and a cooling unit shown in figure 3.
The cooling unit includes:
a second circulating water pump 11 for pumping the wastewater 4;
the water cooler 12 is used for cooling the wastewater pumped by the second circulating water pump 11;
the second valve 13 is used for controlling the opening and closing of a water path between the water cooler 12 and the spray header 14;
and the spray header 14 is used for spraying the cooled wastewater to the low-voltage electrode 3.
The method for treating the organic pollutant wastewater comprises the following steps of:
pumping the wastewater by using a second circulating water pump 11, cooling the wastewater by using a water cooler 12, and controlling a cooling water path switch by using a second valve 13; the cooled waste water is sprayed to the low voltage electrode 3 by the shower head 14.
Example four
An organic pollutant wastewater treatment device comprises a plasma generation part, a cooling unit and an atomization unit which are arranged in a reaction box, wherein the atomization unit is shown in figure 4.
The atomizing unit adopts ultrasonic atomizer 15, ultrasonic atomizer 15 is placed in waste water 4 of reaction box bottom for atomize waste water into the liquid drop, the liquid drop is in disperse in the reaction box, with the mixing of plasma active material in the reaction box. The ultrasonic atomizer 15 is connected to a power supply 16.
EXAMPLE five
An organic pollutant wastewater treatment device comprises a gas supplementing and circulating unit as shown in figure 5, besides a plasma generation part, a cooling unit and an atomization unit which are arranged in a reaction box.
The air supplement and gas circulation unit comprises: a gas pressurization mechanism 18 and a gas flow meter 19. The input end of the gas pressurization mechanism 18 is communicated with the reaction box and is used for generating air or oxygen flow and outputting the air or oxygen flow to the plasma generation part. And the gas flowmeter 19 is used for monitoring the gas flow output by the gas pressurization mechanism 18 and is convenient to control.
The gas pressurization mechanism 18 may employ a gas compressor or a high pressure gas source.
Considering the integrated design, when the diversion mechanism 9 is installed in the organic pollutant wastewater treatment device, the diversion mechanism 9 can be provided with the air hole 20, so that the gas output from the gas supplementing and circulating unit can conveniently enter the plasma generation part through the air hole 20.
The organic pollutant wastewater treatment method of the invention also comprises air supply circulation:
the gas introduced into the reaction zone is pressurized by a gas pressurization mechanism 18, and the gas flow rate is controlled by a gas flow meter 9. The gas enters the plasma reaction zone through the gas holes 20 on the flow guide mechanism 9.
EXAMPLE six
The organic pollutant waste water treating apparatus includes one plasma generator, one cooling unit, one atomizing unit and one catalytic unit.
The catalytic unit is disposed in the wastewater and comprises a homogeneous or heterogeneous catalyst. The catalyst may be mixed in the waste water or may be supported.
EXAMPLE seven
Referring to FIG. 6, a schematic diagram of an organic pollutant wastewater treatment device is shown.
The organic pollutant wastewater treatment device comprises a reaction box, a high-voltage electrode 1, a blocking medium 2, a low-voltage electrode 3, a first circulating water pump 5, a second circulating water pump 11, a flowmeter 6, a first valve 7, a second valve 13, a partition plate 8, a flow guide structure 9, a water cooler 12, a spray header 14, an ultrasonic atomizer 15, a power supply 16, a high-pressure gas source 18, a catalyst 21 and a high-pressure power supply 22; the reaction box is divided into an upper layer space and a lower layer space by a clapboard 8.
The high-voltage electrode 1 is wrapped by a layer of barrier medium 2, and the periphery of the barrier medium 2 is wrapped by a cylindrical low-voltage electrode 3. A gap is reserved between the low-voltage electrode 3 and the barrier medium 2, so that waste water and air can pass through. The positive pole of the high voltage power supply 22 is connected to the high voltage electrode 1, and the negative pole is connected to the ground 23 in common with the low voltage electrode 3.
The ultrasonic atomizer 15 is connected with a power supply 16; the gas pressurization mechanism 18 is connected with a gas flowmeter 19; the gas enters the plasma reaction area through the gas holes 20 on the flow guide mechanism. The catalyst 21 is thrown into the wastewater.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. An apparatus for treating organic pollutant wastewater, the apparatus comprising: a plasma generating part, an atomizing unit and a cooling unit; wherein the content of the first and second substances,
the plasma generating part is used for generating plasma through high-voltage discharge;
the atomization unit is used for atomizing the wastewater into liquid drops, and the liquid drops are mixed with active substances in the plasma released by the plasma generation part;
and the cooling unit is used for cooling the waste water and spraying the cooled waste water to the plasma generating part.
2. The organic pollutant wastewater treatment device of claim 1, wherein: the plasma generating part comprises a high-voltage electrode, the high-voltage electrode is connected with the anode of a high-voltage power supply, a blocking medium is wrapped outside the high-voltage electrode, a low-voltage electrode is arranged on the periphery of the blocking medium, a gap is reserved between the blocking medium and the low-voltage electrode, and the low-voltage electrode is grounded with the cathode of the high-voltage power supply;
preferably, the high voltage electrode, the barrier medium and the low voltage electrode are coaxial;
preferably, the low voltage electrode is cylindrical;
preferably, the high-voltage power supply adopts a pulse type or an alternating current type.
3. The organic pollutant wastewater treatment device of claim 1, wherein: the device also comprises a wastewater circulating unit which is used for pumping wastewater into the plasma generating part, and the wastewater forms a water curtain when flowing through the inner wall of the plasma generating part;
preferably, the wastewater circulating unit comprises a first circulating water pump, a flow meter and a first valve, wherein the first circulating water pump is arranged on a passage between the wastewater and the plasma generating part, the first circulating water pump is used for pumping the wastewater, the flow meter is used for detecting the flow of the wastewater, and the first valve is used for controlling the opening and closing of the passage;
preferably, the water curtain is formed on the inner wall of the low-voltage electrode of the plasma generating part;
preferably, the wastewater circulating unit further comprises a flow guide mechanism, wherein a gap is reserved between the flow guide mechanism and a low-voltage electrode of the plasma generating part, and the flow guide mechanism is used for guiding wastewater introduced into the passage to form a water film;
preferably, the flow guide mechanism is coaxial with the plasma generation part.
4. The organic pollutant wastewater treatment device of claim 1, wherein: the device also comprises a gas supplementing and circulating unit which is used for inputting gas to the plasma generating part;
preferably, the gas comprises at least one of: air, oxygen, ozone, inert gases.
5. The organic pollutant wastewater treatment plant of claim 4, wherein the make-up and gas recycle unit comprises: the input end of the gas pressurization mechanism is connected with the reaction box comprising the plasma generation part and is used for pressurizing the gas in the communication gas path and inputting the pressurized gas into the plasma generation part; preferably, a gas flow meter is provided in a gas passage between the gas pressurizing mechanism and the plasma generating portion;
preferably, the output end of the gas pressurization mechanism is connected with the flow guide mechanism, and gas is introduced into the plasma generation part through a gas hole arranged on the flow guide mechanism;
preferably, the bottom in the reaction box is used for storing wastewater, and the atomization unit is arranged in the reaction box;
preferably, a catalytic unit is further arranged in the wastewater, and is used for adsorbing pollutant molecules in the wastewater and activating active substances;
preferably, a partition board is arranged in the reaction box, the plasma generating part is arranged at the lower end of the partition board, and the partition board, the four walls and the bottom surface of the reaction box form a reaction area.
6. The organic pollutant wastewater treatment device of claim 1, wherein: the cooling unit comprises a second circulating water pump, a water cooler and a spray header which are sequentially connected, and a second valve is arranged on a passage connecting the water cooler and the spray header; wherein the content of the first and second substances,
the water cooling machine is used for cooling the wastewater pumped by the second circulating water pump;
the second valve is used for controlling the cooled wastewater output by the water cooling machine to enter the spray header;
and the spray header is used for spraying the cooled waste liquid to the low-voltage electrode of the plasma generation part.
7. A method for treating organic pollutant wastewater is characterized by comprising the following steps:
generating plasma by utilizing a discharge process between the high-voltage electrode and the low-voltage electrode;
atomizing the wastewater into liquid drops, wherein the liquid drops are mixed with active substances in the plasma;
and cooling the wastewater and spraying the wastewater to the low-voltage electrode.
8. The wastewater treatment method according to claim 7, characterized in that the method further comprises: and continuously introducing gas into the reaction area of the plasma.
9. The wastewater treatment method according to claim 7, characterized in that the method further comprises: adding a homogeneous and/or heterogeneous catalyst to the wastewater.
10. The wastewater treatment method according to claim 7, characterized in that the method further comprises: and circularly flowing the wastewater into the reaction area of the plasma, so that the wastewater forms a water curtain when flowing through the inner wall of the low-voltage electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946847.3A CN115108625A (en) | 2022-08-09 | 2022-08-09 | Organic pollutant wastewater treatment device and wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946847.3A CN115108625A (en) | 2022-08-09 | 2022-08-09 | Organic pollutant wastewater treatment device and wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115108625A true CN115108625A (en) | 2022-09-27 |
Family
ID=83336115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210946847.3A Pending CN115108625A (en) | 2022-08-09 | 2022-08-09 | Organic pollutant wastewater treatment device and wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115108625A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115676961A (en) * | 2023-01-03 | 2023-02-03 | 中国科学院合肥物质科学研究院 | Method for degrading antibiotics by using immersion type plasma jet serial activated gas water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202558734U (en) * | 2012-03-31 | 2012-11-28 | 四川省水处理及资源化工程技术研究中心 | Phenolic resin production waste water disposal device |
| CN103819030A (en) * | 2014-01-21 | 2014-05-28 | 中国科学院等离子体物理研究所 | Gas-liquid mixed dielectric barrier discharge water treatment device and method |
| CN203754483U (en) * | 2014-01-09 | 2014-08-06 | 中国科学院等离子体物理研究所 | Dam-type DBD (dielectric barrier discharge) plasma based pharmaceutically industrial wastewater treatment device |
-
2022
- 2022-08-09 CN CN202210946847.3A patent/CN115108625A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202558734U (en) * | 2012-03-31 | 2012-11-28 | 四川省水处理及资源化工程技术研究中心 | Phenolic resin production waste water disposal device |
| CN203754483U (en) * | 2014-01-09 | 2014-08-06 | 中国科学院等离子体物理研究所 | Dam-type DBD (dielectric barrier discharge) plasma based pharmaceutically industrial wastewater treatment device |
| CN103819030A (en) * | 2014-01-21 | 2014-05-28 | 中国科学院等离子体物理研究所 | Gas-liquid mixed dielectric barrier discharge water treatment device and method |
Non-Patent Citations (2)
| Title |
|---|
| 薛广波等: "《空气净化原理、设计与应用》", 西北工业大学出版社, pages: 1038 - 310 * |
| 黄龙呈等: "《低温等离子体降解偏二甲肼废水的实验研究》", 《合能材料》, pages 1 - 10 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115676961A (en) * | 2023-01-03 | 2023-02-03 | 中国科学院合肥物质科学研究院 | Method for degrading antibiotics by using immersion type plasma jet serial activated gas water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103819030B (en) | Gas-liquid mixed dielectric barrier discharge water treatment device and method | |
| CN100522320C (en) | Low temperature plasma device for treating volatile organic | |
| CN110394038B (en) | Device and method for purifying air by using low-temperature plasma activation water | |
| US7919053B2 (en) | Pulsed gliding arc electrical discharge reactors | |
| CN105600869B (en) | A kind of corona discharge plasma sewage-treatment plant using multilayer wire plate electrode | |
| CN115108625A (en) | Organic pollutant wastewater treatment device and wastewater treatment method | |
| CN102161534A (en) | Device for processing dimethylamine exhaust gas and wastewater | |
| CN105130046A (en) | Plasma and ultrasonic and catalysis combined cascading style water treatment device | |
| CN114852962B (en) | Hydrogen production system and method for decomposing alcohols by microwave plasma under normal pressure | |
| CN110316787B (en) | Gas-liquid discharge synergistic composite photocatalyst water treatment device and treatment method | |
| CN110482642A (en) | A kind of pollutant handling arrangement of foam class dielectric barrier discharge plasma | |
| CN207330422U (en) | A kind of Air-oil mixing film low-temperature plasma wastewater treatment device | |
| CN101148285A (en) | Method for processing waste water by high-voltage impulse gas-phase humidification discharge | |
| CN113163566B (en) | Device and method for modifying carbon material by using plasma | |
| CN107417493B (en) | Method and device for modifying light hydrocarbon absorbed by gas discharge synergistic solution | |
| CN101759154B (en) | Device and method for plasma to synthesize hydrogen peroxide | |
| CN107311272B (en) | Method and device for purifying waste water by gas discharge | |
| CN111559790B (en) | Pollutant treatment device of venturi type water mist discharge plasma | |
| CN103657359A (en) | Atmospheric glow discharge plasma reactor with rotating electrode | |
| CN102515302B (en) | Micro-hollow cathode discharge plasma efficient sewage treatment unit | |
| CN216878667U (en) | Waste gas treatment device for plastic packaging printing industry | |
| CN216136390U (en) | Nanometer atomizing device for low-temperature plasma activated water disinfection | |
| CN210287019U (en) | Device for treating organic pollutants in landfill leachate by utilizing electrostatic spraying | |
| CN110642332B (en) | Array jet water purifier | |
| CN207330423U (en) | A kind of gas-liquid mixed film low-temperature plasma wastewater treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |