CN112390373B - Artificial wetland sewage treatment device and method based on aeration and high-voltage pulse discharge - Google Patents
Artificial wetland sewage treatment device and method based on aeration and high-voltage pulse discharge Download PDFInfo
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- CN112390373B CN112390373B CN202011253965.3A CN202011253965A CN112390373B CN 112390373 B CN112390373 B CN 112390373B CN 202011253965 A CN202011253965 A CN 202011253965A CN 112390373 B CN112390373 B CN 112390373B
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- 239000010865 sewage Substances 0.000 title claims abstract description 78
- 238000005273 aeration Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 75
- 229910052751 metal Inorganic materials 0.000 claims abstract description 75
- 239000011521 glass Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims 1
- 230000033558 biomineral tissue development Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 208000028659 discharge Diseases 0.000 description 59
- 239000007788 liquid Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- 238000003756 stirring Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
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- 239000012071 phase Substances 0.000 description 3
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
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- 238000010168 coupling process Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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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
- C02F1/46—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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- 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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The application provides this application provides an constructed wetland sewage treatment device based on aeration and high-voltage pulse discharge, includes: a housing chamber with an upper opening and a discharge device; wherein, the accommodating cavity is internally provided with an artificial wet stratum, a sewage layer and an aeration layer from top to bottom respectively; the discharge electrode is inserted into and penetrates through the artificial wet stratum to the sewage layer; the discharge electrode includes: a negative electrode and a positive electrode; the negative electrode comprises a conductive metal tube arranged in the sewage layer; the positive electrode comprises a metal wire, and the metal wire extends to the central position of the conductive metal tube; the metal wire is wrapped by a glass tube, and the discharge tip of the metal wire is wrapped by a glass sphere; when power is supplied, the high-voltage electricity is discharged from the discharge tip of the positive electrode to the surrounding conductive metal tube through the glass sphere by penetrating through the air in the glass tube, so that the conventional pollution problem is solved, the organic matters which are difficult to degrade in the water can be efficiently removed, and the complete mineralization process of the organic matters is accelerated.
Description
Technical Field
The application relates to the technical field of water environment pollution treatment, in particular to an artificial wetland sewage treatment device and method based on aeration and high-voltage pulse discharge.
Background
The constructed wetland has been widely applied in the field of sewage centralized treatment, and the high-efficiency aeration technology can greatly improve the content of dissolved oxygen in water, thereby being beneficial to the propagation of aerobic microorganisms and leading the constructed wetland to have better sewage treatment effect. However, in recent years, research focuses on a large number of treatment methods for refractory organic matters in water, which cannot be effectively solved, high-voltage pulse discharge can ionize water molecules to generate a large amount of OH and the like with extremely strong oxidizing capability, oxidize refractory organic matters in water, finally mineralize the refractory organic matters into H2O and CO2, the efficiency is greatly improved, and the problems of overlong period and low efficiency of treating refractory organic matters in the prior art and process conditions of artificial wetland and the like are solved.
At present, high-voltage pulse discharge is not widely applied, because the industrial application of the high-voltage pulse discharge is not mature, and the high-voltage pulse discharge is especially in the field of water treatment. The current discharge modes include gas phase discharge, liquid phase discharge and gas-liquid phase discharge. The gas phase discharge requires low energy, a passage can be formed between the electrodes through breakdown air, and air molecules around the electrodes, particularly between the electrodes, can be ionized under the action of a high-voltage electric field. In the field of water treatment, if electrodes are all placed in liquid, liquid phase discharge is far greater than the molecular spacing in gas because the liquid molecular spacing is far greater than the molecular spacing in gas, and high-voltage power supplies with the same power are difficult to form an effective electric field so as to form plasma. The gas-liquid two-phase discharge is a high-voltage discharge type which is considered to be most effective at present, in which one electrode (usually an anode) is placed in the air, the other electrode is placed in the liquid, an electric field is effectively formed, oxygen in the gas is ionized to form ozone, water molecules are ionized at the interface between the air and the liquid to form free radicals with high oxidability such as OH and the like, and macromolecular organic components in the liquid are degraded by the oxidized substances. The degradation of hardly degradable organic matters in water has the disadvantage that the time required for complete mineralization is long and unnecessary.
Disclosure of Invention
Aiming at the problems, the application provides the constructed wetland sewage treatment device and the constructed wetland sewage treatment method which can solve the conventional pollution problem and can also efficiently remove the organic matters difficult to degrade in water, and simultaneously accelerate the complete mineralization process of the organic matters.
The application provides an artificial wetland sewage treatment device based on aeration and high-voltage pulse discharge, include: a housing chamber with an upper opening and a discharge device; wherein, the accommodating cavity is internally provided with an artificial wet stratum, a sewage layer and an aeration layer from top to bottom respectively; the discharge electrode is inserted into and penetrates through the artificial wet stratum to the sewage layer; the discharge electrode includes: a negative electrode and a positive electrode; the negative electrode comprises a conductive metal tube arranged in the sewage layer; the positive electrode comprises a metal wire, and the metal wire extends to the central position of the conductive metal tube; the metal wire is wrapped by a glass tube, and the discharge tip of the metal wire is wrapped by a glass sphere; when power is supplied, high-voltage electricity is discharged from the discharge tip of the positive electrode through the air in the glass tube, through the glass sphere and to the surrounding conductive metal tube.
Optionally, the artificial wet stratum comprises: the wetland substrate sludge and wetland plants planted on the wetland substrate sludge;
the bottom of the artificial wet stratum is provided with a water permeable plate so as to be separated from the sewage layer; the external sewage permeates through the artificial wet stratum and enters the sewage layer through the water permeable plate.
Optionally, the aeration layer includes: a plurality of aeration devices; each aeration device comprises: two conductive metal pipes are vertically crossed to form four aeration short pipes extending out along the center of the vertical intersection point, wherein each aeration short pipe is provided with a plurality of small holes in the same direction.
Optionally, all aeration devices are provided with an aeration pipe for conveying aeration gas; the vertical intersection point of the two conductive metal pipes is communicated with the aerator pipe; the aeration pipe takes aeration gas as power to stir sewage in a rotating way, and aeration bubbles are stirred into the sewage.
Optionally, the discharge electrode further includes: the electrode fixing device is inserted into and penetrates through the artificial wet stratum to the sewage layer; the conductive metal pipe is connected to the bottom of the electrode fixing device to be placed in the sewage layer.
Optionally, the constructed wetland sewage treatment device further comprises: a high voltage pulse power supply; the conductive metal tube is led out to the outside through a lead and is connected with a grounding negative electrode of the high-voltage pulse power supply; the metal wire is connected with the positive electrode of the high-voltage pulse power supply.
Optionally, the electrode fixing device is a PVC circular tube; the metal wire is a metal copper wire;
the conductive metal tube is made of stainless steel.
Optionally, the conductive metal tube has an inner diameter of 4cm; the length of the conductive metal tube is 5cm; the inner diameter of the glass tube is 0.6cm, and the inside of the glass tube contains air; the diameter of the glass sphere was 1cm.
Alternatively, there are a plurality of fixing points in the electrode fixing device, and the metal wire and the glass tube constituting the positive electrode are fixed at a central position in the electrode fixing device by an insulating substance.
The application also provides an artificial wetland sewage treatment method based on aeration and high-voltage pulse discharge, which comprises the following steps: arranging a sewage layer at the underground part of the artificial wet; setting an aeration device and a discharge electrode in the sewage layer; a conductive metal tube arranged in sewage is used as a negative electrode of a discharge electrode; the metal wire wrapped by glass is used as the positive electrode of the discharge electrode and is arranged in the central position of the conductive metal tube, wherein the discharge tip of the metal wire is wrapped by a glass sphere; stirring sewage by using an aeration device to enable sewage and aeration bubbles to enter a conductive metal pipe area; the high-voltage electricity is discharged from the discharge tip of the positive electrode to the surrounding conductive metal tube through the glass sphere by penetrating the air in the glass tube so as to be degraded by sewage.
According to the method, aeration equipment is arranged below the constructed wetland, a large number of bubbles are provided, under the liquid environment of the large number of bubbles, gas-liquid discharge is formed by applying a high-voltage pulse power supply, bubbles generated by efficient aeration are fully contacted with sewage in a water stirring mode, and the bubbles exist in a discharge area to be favorable for degradation treatment of the sewage. Meanwhile, the discharge anode configuration is improved, a high-voltage pulse discharge system is formed under the condition that the power of a power supply is unchanged, and finally, a more effective water treatment system is formed by coupling high-voltage pulse discharge by using the high-efficiency aeration constructed wetland;
the improved discharge anode structure can be used for making the anode in a gas medium wrapped by the glass sphere, the sewage to be treated is arranged between the glass sphere and the cathode region, and the gas-liquid discharge has the advantages that the gas density is far smaller than that of liquid, the discharge treatment effect can be realized under lower power and voltage, and the energy is saved; not only can solve the conventional pollution problem, but also can efficiently remove the organic matters difficult to degrade in the water, and simultaneously accelerates the complete mineralization process of the organic matters through the artificial wetland.
Drawings
Fig. 1 is a schematic structural diagram of an artificial wetland sewage treatment device provided in an embodiment of the present application;
fig. 2 is a schematic structural view of an aeration apparatus provided in an embodiment of the present application;
fig. 3 is a schematic partial structural view of a discharge electrode provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The following description, with reference to the accompanying drawings, is provided to facilitate a comprehensive understanding of various embodiments of the present application as defined by the claims and their equivalents; these embodiments include various specific details for ease of understanding, but these are to be considered exemplary only. Accordingly, those skilled in the art will appreciate that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions will be omitted herein for brevity and clarity of description.
The terms and phrases used in the following specification and claims are not limited to a literal sense, but rather are only used for the purpose of clarity and consistency in understanding the present application. Thus, it will be appreciated by those skilled in the art that the descriptions of the various embodiments of the present application are provided for illustration only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which embodiments of the present application are shown, it being apparent that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It is noted that the terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items. The expressions "first", "second", "said first" and "said second" are used for modifying the respective elements irrespective of order or importance, and are used merely for distinguishing one element from another element without limiting the respective elements.
As shown in fig. 1, the present application provides an artificial wetland sewage treatment device, including: a housing chamber 1 having an upper opening and a discharge electrode 2; wherein, the accommodating cavity 1 is internally provided with an artificial wet stratum 11, a sewage layer 12 and an aeration layer 13 from top to bottom respectively; the discharge electrode 2 is inserted into and penetrates through the artificial wet stratum 11 to the sewage layer 12; the discharge electrode 2 includes: a negative electrode 21 and a positive electrode 22; the negative electrode 21 includes a conductive metal tube 211 disposed in a sewage layer; the positive electrode 22 includes a metal wire 221, and the metal wire 221 extends to a central position of the conductive metal tube 211; the metal wire 221 is wrapped by a glass tube 222, and the discharge tip of the metal wire 221 is wrapped by a glass sphere 223; when power is supplied, high voltage electricity is discharged from the discharge tip of the positive electrode 22 through the air in the glass tube 222, through the glass sphere 223, and to the surrounding conductive metal tube 211.
The parameters of the high-voltage power supply are shown in table 1, the high-voltage power supply is a high-voltage low-power pulse power supply (the parameters such as electrode spacing and the like of the invention are proved to be suitable for the pulse power supply through experiments, the size of an electrode can be properly adjusted according to the difference of power supply voltage and power), when power is supplied, the high-voltage power supply discharges the surrounding stainless steel metal tube through the air in the glass tube from the tip of the positive electrode and through the glass sphere by adopting a dielectric barrier discharge mode (glass is used as an insulating dielectric barrier). The discharge treatment sewage area is the area in the metal cathode tube. Along with the continuous floating of aeration bubbles to a treatment area, the stirred water body continuously flows to enable sewage to continuously enter the area, and some refractory organic wastes can be degraded in the area, the main principle is that a great amount of active free radical components (OH is the main component) with shorter duration and extremely high oxidability are generated by discharging electrolysis water molecules, and meanwhile, when the micro-bubbles with high-efficiency aeration exist in the discharge area, oxygen molecules in gas can be activated into ozone to oxidize, so that the oxygen is a secondary mechanism, and the existence of the bubbles is favorable for electric energy transmission due to better gas-liquid discharge effect.
Table 1 high voltage pulse power parameters
| Power supply parameters | High-voltage pulse power supply |
| Output peak voltage | 0-45 kV adjustable (effective adjusting range 10-45 kV) |
| Peak output power | 4kW |
| Frequency of | 30-200 Hz continuously adjustable |
| Pulse width | About 1us |
| Output protection | Output overvoltage, output overcurrent, output imbalance, load arc |
| Input protection | Input overvoltage, input undervoltage and input overcurrent |
| Security protection | Ground protection, leakage protection, external control protection and overheat |
| Protection response time | 1us |
| Input pair housing resistor | ≥20MΩ |
| Input to the housing withstand voltage | 2000V/1min |
| Load adjustment rate | 0.5％ |
| Protection function | Input overvoltage and undervoltage; outputting overvoltage, overcurrent and short circuit; complete machine overheat |
| Efficiency of | ≥85％ |
| Over-temperature protection threshold of whole machine | 80～85℃ |
| Insulation resistor | ≥20M |
| Mean time to failure | ≥10000h |
Optionally, the artificial wet stratum 11 includes: a wetland substrate 111 and wetland plants 112 planted on the wetland substrate 111; the bottom of the artificial wet stratum 11 is provided with a water permeable plate 113 so as to be separated from the sewage layer 12; external sewage permeates through the artificial wet stratum 11 and enters the sewage layer 12 through the water permeable plate 113.
Optionally, the aeration layer 13 includes: a plurality of aeration devices 131; each aeration device 131 includes: two conductive metal pipes are vertically crossed to form four aeration short pipes extending out along the center of the vertical intersection point, wherein each aeration short pipe is provided with a plurality of small holes in the same direction.
Alternatively, all aeration devices 131 are supplied with aeration gas by one aeration pipe 132; the vertical intersection point of the two conductive metal pipes is communicated with the aeration pipe 132; the aeration tube 132 rotatably agitates the sewage with aeration gas as a motive force and agitates aeration bubbles into the sewage.
Optionally, the discharge electrode 2 further includes: an electrode fixing device 23, wherein the electrode fixing device 23 is inserted into and penetrates through the artificial wet stratum 11 to the sewage layer 12; the conductive metal tube 211 is connected to the bottom of the electrode fixture 23 to be placed in the sewage layer 12.
Optionally, the constructed wetland sewage treatment device further comprises: a high-voltage pulse power supply 3; the conductive metal tube 211 is led out from the lead 4 to the outside and is connected with the grounding negative electrode of the high-voltage pulse power supply 3; the metal wire 221 is connected to the positive electrode of the high-voltage pulse power supply 3.
Optionally, the electrode fixing device 23 is a circular tube made of PVC; the metal wire 221 is a metal copper wire; the conductive metal tube 211 is made of stainless steel.
Alternatively, the inner diameter of the conductive metal tube 211 is 4cm; the length of the conductive metal tube 211 is 5cm; the inner diameter of the glass tube 222 is 0.6cm, and the inside contains air; the diameter of the glass sphere 223 is 1cm.
Alternatively, there are a plurality of fixing points in the electrode fixing device 23, and the metal wire 221 and the glass tube 222 constituting the positive electrode 22 are fixed at the center position of the electrode fixing device 23 by an insulating substance.
The application also provides an artificial wetland sewage treatment method, which comprises the following steps: arranging a sewage layer at the underground part of the artificial wet; setting an aeration device and a discharge electrode in the sewage layer; a conductive metal tube arranged in sewage is used as a negative electrode of a discharge electrode; the metal wire wrapped by glass is used as the positive electrode of the discharge electrode and is arranged in the central position of the conductive metal tube, wherein the discharge tip of the metal wire is wrapped by a glass sphere; stirring sewage by using an aeration device to enable sewage and aeration bubbles to enter a conductive metal pipe area; the high-voltage electricity is discharged from the discharge tip of the positive electrode to the surrounding conductive metal tube through the glass sphere by penetrating the air in the glass tube so as to be degraded by sewage.
According to the method, aeration equipment is arranged below the constructed wetland, a large number of bubbles are provided, under the liquid environment of the large number of bubbles, gas-liquid discharge is formed by applying a high-voltage pulse power supply, bubbles generated by efficient aeration are fully contacted with sewage in a water stirring mode, and the bubbles exist in a discharge area to be favorable for degradation treatment of the sewage. Meanwhile, the discharge anode configuration is improved, a high-voltage pulse discharge system is formed under the condition that the power of a power supply is unchanged, and finally, a more effective water treatment system is formed by coupling high-voltage pulse discharge by using the high-efficiency aeration constructed wetland;
the improved discharge anode structure can be used for making the anode in a gas medium wrapped by the glass sphere, the sewage to be treated is arranged between the glass sphere and the cathode region, and the gas-liquid discharge has the advantages that the gas density is far smaller than that of liquid, the discharge treatment effect can be realized under lower power and voltage, and the energy is saved; not only can solve the conventional pollution problem, but also can efficiently remove the organic matters difficult to degrade in the water, and simultaneously accelerates the complete mineralization process of the organic matters through the artificial wetland.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (8)
1. Constructed wetland sewage treatment device based on aeration and high-voltage pulse discharge, characterized by comprising:
a housing chamber (1) with an upper opening and a discharge electrode (2);
wherein, the accommodating cavity (1) is internally provided with an artificial wet stratum (11), a sewage layer (12) and an aeration layer (13) from top to bottom respectively;
the discharge electrode (2) is inserted into and penetrates through the artificial wet stratum (11) to the sewage layer (12);
the discharge electrode (2) comprises: a negative electrode (21) and a positive electrode (22);
the negative electrode (21) comprises a conductive metal tube (211) arranged in a sewage layer;
the positive electrode (22) comprises a metal wire (221), and the metal wire (221) extends to the central position of the conductive metal tube (211);
the metal wire (221) is wrapped by a glass tube (222), and the discharge tip of the metal wire (221) is wrapped by a glass sphere (223);
when power is supplied, high-voltage electricity is discharged from the discharge tip of the positive electrode (22) to the surrounding conductive metal tube (211) through the glass sphere (223) by penetrating air in the glass tube (222);
wherein the aeration layer (13) comprises: a plurality of aeration devices (131); each aeration device (131) comprises: two conductive metal pipes are vertically crossed to form four aeration short pipes extending out along the center of the vertical intersection point, wherein each aeration short pipe is provided with a plurality of small holes in the same direction; all aeration devices (131) are used for conveying aeration gas through one aeration pipe (132); the vertical intersection point of the two conductive metal pipes is communicated with the aeration pipe (132); the aeration pipe (132) rotates and agitates the sewage by using aeration gas as power and agitates aeration bubbles into the sewage.
2. The constructed wetland sewage treatment device according to claim 1, wherein,
the artificial wet stratum (11) comprises: a wetland substrate sludge (111) and wetland plants (112) planted on the wetland substrate sludge (111);
the bottom of the artificial wet stratum (11) is provided with a water permeable plate (113) so as to be separated from the sewage layer (12);
the external sewage permeates through the artificial wet stratum (11) and enters the sewage layer (12) through the water permeable plate (113).
3. The constructed wetland sewage treatment device according to claim 1, wherein the discharge electrode (2) further comprises: an electrode fixing device (23), wherein the electrode fixing device (23) is inserted into and penetrates through the artificial wet stratum (11) to the sewage layer (12); the conductive metal tube (211) is connected to the bottom of the electrode fixing device (23) to be placed in the sewage layer (12).
4. The constructed wetland sewage treatment device according to claim 3, further comprising: a high-voltage pulse power supply (3);
the conductive metal tube (211) is led out from the lead (4) to the outside and is connected with the grounding negative electrode of the high-voltage pulse power supply (3);
the metal wire (221) is connected with the positive electrode of the high-voltage pulse power supply (3).
5. The constructed wetland sewage treatment device according to claim 4, wherein,
the electrode fixing device (23) is a PVC circular tube;
the metal wire (221) is a metal copper wire;
the conductive metal tube (211) is made of stainless steel.
6. The constructed wetland sewage treatment device according to claim 5, wherein,
the inner diameter of the conductive metal tube (211) is 4cm;
the length of the conductive metal tube (211) is 5cm;
the inner diameter of the glass tube (222) is 0.6cm, and the inside of the glass tube contains air;
the diameter of the glass sphere (223) is 1cm.
7. A constructed wetland sewage treatment apparatus according to claim 3, wherein the electrode fixing means (23) has a plurality of fixing points, and the metal wire (221) and the glass tube (222) constituting the positive electrode (22) are fixed at the central position of the electrode fixing means (23) by means of an insulating material.
8. An artificial wetland sewage treatment method based on aeration and high-voltage pulse discharge, which is characterized in that the method is based on the artificial wetland sewage treatment method based on aeration and high-voltage pulse discharge as claimed in any one of claims 1 to 7
The wetland sewage treatment device is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011253965.3A CN112390373B (en) | 2020-11-11 | 2020-11-11 | Artificial wetland sewage treatment device and method based on aeration and high-voltage pulse discharge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011253965.3A CN112390373B (en) | 2020-11-11 | 2020-11-11 | Artificial wetland sewage treatment device and method based on aeration and high-voltage pulse discharge |
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| Publication Number | Publication Date |
|---|---|
| CN112390373A CN112390373A (en) | 2021-02-23 |
| CN112390373B true CN112390373B (en) | 2023-05-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663916A (en) * | 2004-12-16 | 2005-09-07 | 哈尔滨工业大学 | High-pressure pulse discharge catalytic oxidation method for removal of undegradable organic substances in water |
| CN201447384U (en) * | 2009-05-22 | 2010-05-05 | 南京大学 | Water-treatment device by using electrode type media to stop electric discharge |
| CN102329033A (en) * | 2011-09-09 | 2012-01-25 | 四川农业大学 | Independent-aeration high-voltage pulse discharging water treatment reactor and sewage treatment method thereof |
| CN204588824U (en) * | 2015-03-26 | 2015-08-26 | 段立鹏 | A kind of constructed wetland device |
| CN206767867U (en) * | 2017-03-31 | 2017-12-19 | 昆明理工大学 | A kind of persistent organic pollutant wastewater processing system |
| RO133723A2 (en) * | 2018-05-08 | 2019-11-29 | Aurelian Dan Ivan | Device for increasing efficiency of constructed wetlands |
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2020
- 2020-11-11 CN CN202011253965.3A patent/CN112390373B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663916A (en) * | 2004-12-16 | 2005-09-07 | 哈尔滨工业大学 | High-pressure pulse discharge catalytic oxidation method for removal of undegradable organic substances in water |
| CN201447384U (en) * | 2009-05-22 | 2010-05-05 | 南京大学 | Water-treatment device by using electrode type media to stop electric discharge |
| CN102329033A (en) * | 2011-09-09 | 2012-01-25 | 四川农业大学 | Independent-aeration high-voltage pulse discharging water treatment reactor and sewage treatment method thereof |
| CN204588824U (en) * | 2015-03-26 | 2015-08-26 | 段立鹏 | A kind of constructed wetland device |
| CN206767867U (en) * | 2017-03-31 | 2017-12-19 | 昆明理工大学 | A kind of persistent organic pollutant wastewater processing system |
| RO133723A2 (en) * | 2018-05-08 | 2019-11-29 | Aurelian Dan Ivan | Device for increasing efficiency of constructed wetlands |
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| CN112390373A (en) | 2021-02-23 |
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