CN112110513A - Sewage treatment equipment and sewage treatment method - Google Patents
Sewage treatment equipment and sewage treatment method Download PDFInfo
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- CN112110513A CN112110513A CN201910540630.0A CN201910540630A CN112110513A CN 112110513 A CN112110513 A CN 112110513A CN 201910540630 A CN201910540630 A CN 201910540630A CN 112110513 A CN112110513 A CN 112110513A
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- 239000010865 sewage Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- -1 nitrite ions Chemical class 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 26
- 238000007254 oxidation reaction Methods 0.000 claims description 22
- 230000003647 oxidation Effects 0.000 claims description 21
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 17
- 239000002957 persistent organic pollutant Substances 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 12
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 230000002195 synergetic effect Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 5
- 229910001448 ferrous ion Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 15
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 208000028659 discharge Diseases 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 10
- 231100000719 pollutant Toxicity 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 150000003254 radicals Chemical class 0.000 description 7
- 239000012028 Fenton's reagent Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 239000013067 intermediate product Substances 0.000 description 4
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- MGZTXXNFBIUONY-UHFFFAOYSA-N hydrogen peroxide;iron(2+);sulfuric acid Chemical compound [Fe+2].OO.OS(O)(=O)=O MGZTXXNFBIUONY-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910014033 C-OH Inorganic materials 0.000 description 1
- 229910014570 C—OH Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940005654 nitrite ion Drugs 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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Classifications
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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
- C02F1/30—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
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
-
- 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
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
- C02F2305/026—Fenton's reagent
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses sewage treatment equipment and a sewage treatment method, the equipment comprises a box body, an opening of the box body is provided with an anode insulating plate, the anode insulating plate covers the box body to form a reaction chamber, a discharge device is arranged in the reaction chamber, the discharge device sequentially comprises an anode plate, a plurality of anode electric columns, a steel wire mesh and a cathode plate from top to bottom, and the bottom of the discharge device is provided with a cathode insulating plate. The sewage treatment method of the invention adopts the sewage treatment equipment to treat sewage. The method is simple and efficient, has stronger oxidizing power and wider application range.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of sewage treatment, in particular to sewage treatment equipment and a sewage treatment method.
[ background of the invention ]
With the continuous expansion of sewage treatment scale in China, the requirements of China on related equipment for sewage treatment are increasing day by day, and sewage treatment is an essential link in future development. Therefore, the demand of China for sewage treatment equipment will be continuously increased and is also persistent. The sewage treatment equipment has wide development space, and the localization of the sewage treatment equipment has great economic value and social significance.
In recent years, organic wastewater with high pollutant concentration and stable structure is continuously generated, and how to effectively remove the organic wastewater difficult to degrade becomes a hot problem for sewage treatment. The hydroxyl free gene has extremely high standard oxidation-reduction potential and extremely strong oxidizing power, and can theoretically generate rapid chain reaction with most organic pollutants.
The methods for treating sewage are very numerous and can be generally classified into physical methods, chemical methods and biological methods, wherein the strong oxidation technology in the chemical method is increasingly applied to the treatment of various kinds of sewage. However, due to the limitation of the oxidation capability of strong oxidizers, strong oxidation technology can only selectively degrade one or more types of pollutants in sewage.
Therefore, the development of a simple and efficient sewage treatment technology with stronger oxidation capacity and wider application range is urgently needed.
[ summary of the invention ]
The invention mainly aims to provide the sewage treatment equipment which is simple and efficient, has stronger oxidation capacity and wider application range.
The invention also aims to provide a sewage treatment method of the sewage treatment equipment, which is simple and efficient, has stronger oxidation capacity and wider application range.
In order to achieve the main purpose, the sewage treatment equipment provided by the invention comprises a box body, wherein an opening of the box body is provided with an anode insulating plate, the anode insulating plate covers the box body to form a reaction chamber, a discharge device is arranged in the reaction chamber, the discharge device sequentially comprises an anode plate, a plurality of anode electric columns, a steel wire mesh and a cathode plate from top to bottom, and the bottom of the discharge device is provided with a cathode insulating plate.
The further scheme is that a first bolt hole is correspondingly formed in the non-peripheral area of the anode insulating plate, a second bolt hole is correspondingly formed in the non-peripheral area of the anode plate, a plurality of fastening screws are arranged between the anode insulating plate and the anode electric pole, and the fastening screws sequentially penetrate through the first bolt hole and the second bolt hole to be fixedly connected with the anode electric pole.
In a further scheme, a through hole is correspondingly formed in the non-peripheral area of the negative plate, and the inner wall profile of the through hole is matched with the outer profile of the positive electrode post.
In a further scheme, the box body is fixedly connected with the anode insulating plate through a guide pillar.
A water inlet pipeline is arranged on one side of the outer surface of the box body, and a drainage pipeline is arranged on the other side of the outer surface of the box body.
The water inlet pipeline is provided with a water level control valve, the water level control valve controls the opening/closing of the water inlet pipeline, and the drainage pipeline is provided with a solenoid valve switch, and the opening/closing of the drainage pipeline is controlled by the solenoid valve switch.
In a further scheme, the positive plate is a positive conductive copper plate, and the negative plate is a negative conductive copper plate.
Therefore, the sewage treatment equipment provided by the invention mainly comprises an anode insulation board, an anode conductive copper sheet, a plurality of anode electric columns, a steel wire mesh, a cathode conductive copper sheet, a cathode insulation board and the like, wherein the discharge device generates electrochemical reaction in the reaction chamber to decompose pollutants in sewage into carbon dioxide, water and water-insoluble intermediate products, then the carbon dioxide, the water and the water-insoluble intermediate products are discharged through a drainage pipeline, and the sewage treatment process is finished after deposition and filtration.
Therefore, the invention has the following characteristics: the conductive electrode is detachable, so that the installation, maintenance and cleaning are convenient; the conductive copper sheet is of a net-shaped structure, so that the surface area of the electrode is increased, the mass transfer coefficient of liquid entering the device is improved, sewage is stirred, and the generation of deposition substances on the electrode is prevented; the insulating plate is arranged, so that the insulating plate has excellent insulating performance, good arc resistance and electric leakage trace resistance, and good safety performance.
In addition, a large amount of hydroxyl radicals and oxygen atoms are carried in plasma generated in the reaction chamber, and the super-strong oxidizing capability and the extremely strong oxidizing capability of the hydroxyl radicals lead the oxidizing capability of the hydroxyl radicals to be far stronger than that of the conventional strong oxidizing technology, so that various pollutants in sewage can be degraded without selectivity.
In order to achieve another object, the present invention provides a method for treating wastewater, comprising the steps of: the sewage in the sewage pool is controlled by a water level control valve of sewage treatment equipment to be sent into a reaction chamber through a water inlet pipeline, air and sewage are used as gas-liquid mixed liquid, the gas of the gas-liquid mixed liquid is excited by a high-frequency high-voltage electric field through a discharge device to generate plasma, the plasma is fully contacted with the sewage to remove organic pollutants in the sewage, wherein the plasma carries a large amount of hydroxyl radicals and oxygen atoms with oxidation capacity; and starting a solenoid valve switch on the drainage pipeline, and discharging the purified clean water through the drainage pipeline.
The further proposal is that when the discharge device excites the gas-liquid mixed liquid with a high-frequency high-voltage electric field to generate plasma, the plasma can fully contact with organic pollutants in the sewage through the nitrogen oxygen free radicals and nitrite ions carried by the plasma and having oxidability so as to remove the organic pollutants in the sewage.
According to a further scheme, when the gas-liquid mixed liquid is excited by the discharge device through a high-frequency high-voltage electric field to generate plasma, iron ions are generated through the synergistic effect of ultraviolet light and hydrogen peroxide and the synergistic effect of ultraviolet light and ozone in the plasma discharge process and combined with ferrous ions, and a Fenton reaction is generated to remove organic pollutants which are difficult to degrade in sewage.
Therefore, the plasma generated in the method carries a large number of hydroxyl radicals and oxygen atoms, and the oxidation capacity of the plasma is far stronger than that of the existing strong oxidation technology due to the super-strong oxidation capacity of the hydroxyl radicals, the oxygen atoms with the extremely strong oxidation capacity, the oxidized nitroxide radicals and nitrite ions and the Fenton reagent with the strong oxidation capacity, so that various pollutants in the sewage can be degraded without selectivity.
[ description of the drawings ]
FIG. 1 is a schematic structural view of an embodiment of a sewage treatment apparatus of the present invention.
FIG. 2 is an exploded perspective view of an embodiment of a wastewater treatment facility according to the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
An embodiment of a sewage treatment device comprises:
referring to fig. 1 to 2, the sewage treatment equipment of the present invention includes a box 100, an opening of the box 100 is provided with an anode insulating plate 1, the anode insulating plate 1 covers the box 100 to form a reaction chamber, a discharge device is arranged in the reaction chamber, the discharge device sequentially includes an anode plate 2, a plurality of anode electric poles 3, a steel wire mesh 4, and a cathode plate 5 from top to bottom, and a cathode insulating plate 6 is arranged at the bottom of the discharge device. The positive plate 2 is a positive conductive copper plate, and the negative plate 5 is a negative conductive copper plate; a plurality of positive posts more help even discharge, and the wire net plays the purpose that the surface of water was sputtered when preventing to discharge.
In this embodiment, a first bolt hole is correspondingly formed in a non-peripheral region of the positive electrode insulating plate 1, a second bolt hole is correspondingly formed in a non-peripheral region of the positive electrode plate 2, a plurality of fastening screws 7 are arranged between the positive electrode insulating plate 1 and the positive electrode electric post 3, and the fastening screws 7 sequentially pass through the first bolt holes and the second bolt holes to be fixedly connected with the positive electrode electric post 3. Wherein, the sewage treatment device of this embodiment is non-sealed design, can with the air direct contact.
In the present embodiment, the non-peripheral region of the negative electrode sheet 5 is correspondingly provided with a through hole, and the inner wall profile of the through hole is matched with the outer profile of the positive electrode post 3.
Wherein, the box 100 is fixedly connected with the anode insulating plate 1 through a guide post 8.
In this embodiment, a water inlet pipe 9 is provided at one side of the outer surface of the case 100, and a water discharge pipe 10 is provided at the other side of the outer surface of the case 100.
Wherein, a water level control valve 11 is arranged on the water inlet pipeline 9, the water level control valve 11 controls the opening/closing of the water inlet pipeline 9, an electromagnetic valve switch 12 is arranged on the water drainage pipeline 10, and the electromagnetic valve switch 12 controls the opening/closing of the water drainage pipeline 10.
Therefore, the sewage treatment equipment provided by the invention mainly comprises an anode insulation board 1, an anode conductive copper sheet, a plurality of anode electric poles 3, a steel wire mesh 4, a cathode conductive copper sheet, a cathode insulation board 6 and the like, wherein a discharge device generates electrochemical reaction in a reaction chamber, so that pollutants in sewage are decomposed into carbon dioxide, water and water-insoluble intermediate products, then the carbon dioxide, the water and the water-insoluble intermediate products are discharged through a drainage pipeline 10, and the sewage treatment process is finished after deposition and filtration.
Therefore, the invention has the following characteristics: the conductive electrode is detachable, so that the installation, maintenance and cleaning are convenient; the conductive copper sheet is of a net-shaped structure, so that the surface area of the electrode is increased, the mass transfer coefficient of liquid entering the device is improved, sewage is stirred, and the generation of deposition substances on the electrode is prevented; the insulating plate is arranged, so that the insulating plate has excellent insulating performance, good arc resistance and electric leakage trace resistance, and good safety performance.
In addition, a large amount of hydroxyl radicals and oxygen atoms are carried in plasma generated in the reaction chamber, and due to the super-strong oxidizing capability of the hydroxyl radicals, the extremely strong oxidizing capability of the oxygen atoms, the oxidizing nitroxide radicals and nitrite ions and the Fenton reagent with strong oxidizing capability, the oxidizing capability of the plasma is far stronger than that of the existing strong oxidizing technology, and various pollutants in the sewage can be degraded without selectivity.
An embodiment of a sewage treatment method comprises the following steps:
the sewage treatment method of the embodiment comprises the following steps: the sewage in the sewage pool is controlled by a water level control valve 11 of the sewage treatment equipment to be sent into a reaction chamber through a water inlet pipeline 9, air and the sewage are used as gas-liquid mixed liquid, the gas-liquid mixed liquid gas is excited by a high-frequency high-voltage electric field through a discharge device to generate plasma, the plasma is fully contacted with the sewage to remove organic pollutants in the sewage, wherein a large amount of hydroxyl radicals and oxygen atoms with oxidation capacity are carried in the plasma; and starting an electromagnetic valve switch 12 on the water drainage pipeline 10, and discharging the purified clean water through the water drainage pipeline 10.
Further, when the discharge device excites the gas-liquid mixed liquid and gas in a high-frequency high-voltage electric field to generate plasma, the plasma can also fully contact with organic pollutants in the sewage through nitrogen oxygen free radicals and nitrite ions with oxidability carried by the plasma so as to remove the organic pollutants in the sewage.
Further, when the discharge device excites the gas-liquid mixed liquid with a high-frequency high-voltage electric field to generate plasma, iron ions are generated by the synergistic effect of ultraviolet light and hydrogen peroxide and the synergistic effect of ultraviolet light and ozone in combination with ferrous ions in the plasma discharge process, and a Fenton reaction is generated to remove organic pollutants which are difficult to degrade in sewage.
In practical application, the hydroxyl radicals are generated in the process of treating water by plasma: the C-C bond is destroyed to form a C-OH bond, so that the organic matter structure is destroyed, and therefore, the pollutant molecules are oxidized and degraded, and the chemical reaction is as follows:
H2O+e→·OH+·H+e (1)
H2O+e→2e+H2O+ (2)
H2O++H2O→·OH+H3O (3)
when oxygen participates in plasma discharge, oxygen atoms can be formed by dissociation of the oxygen, the oxygen atoms can directly carry out oxidation reaction with pollutant molecules and can also promote generation of hydroxyl radicals, and the chemical reaction formula is as follows:
·O+H2O→2·OH (4)
because of the short survival of hydroxyl radicals, hydrogen peroxide is eventually produced in water, and its presence can react in different ways or with other chemicals to produce more hydroxyl radicals. For example, when the plasma discharges in oxygen, ozone and hydrogen peroxide are generated, and the chemical reaction formula is as follows:
H2O2→H++HO2 - (5)
O3+HO2 -→·O2 -+·OH+O2 (6)
when the plasma discharge is closely related to the gas composition, different types of radicals are generated due to different participating elements. Most of the N in the air2And O2When N is present2And O2When the aqueous solution is subjected to the discharge treatment in the mixture of (1), an oxidizing nitroxide radical and nitrite ion are additionally generated.
In addition, the plasma discharge itself incorporates a photocatalyst, an electrochemical technique. The synergistic effect of ultraviolet light and hydrogen peroxide can be generated in the discharge process, and the synergistic effect of the ultraviolet light and ozone is combined with a small amount of ferrous ions to generate iron ions, so that a Fenton reaction is generated.
The Fenton reaction is an inorganic chemical reaction and comprises the following steps: hydrogen peroxide (H)2O2) The mixed solution with the ferrous ion Fe oxidizes many known organic compounds such as carboxylic acids, alcohols, esters into an inorganic state. The reaction has high capability of removing refractory organic pollutants, and is widely applied to the treatment of printing and dyeing wastewater, oily wastewater, phenol-containing wastewater, coking wastewater, nitrobenzene-containing wastewater, diphenylamine wastewater and other wastewater, and the chemical reaction formula is as follows:
Fe2++H2O2→Fe3++(OH)-+OH· (7)
H2O2+Fe3+→Fe2++O2+2H+ (8)
O2+Fe2+→Fe3++O2· (9)
as can be seen from formula (7), 1mol of H2O2With 1mol of Fe2+After the reaction, 1mol of Fe is generated3+With concomitant formation of 1mol of OH-1mol of hydroxyl radical is added. It is the presence of hydroxyl radicals that gives the fenton reagent a strong oxidizing power. The oxidation potential of OH radicals in solution at pH 4 was calculated to be as high as 2.73V. In nature, the oxidizing power is inferior to that of fluorine gas in solution.
As is clear from the formulas (8) and (9), the Fenton's reagent generates 1mol of OH.radical and 1mol of peroxy radical O2However, since the oxidation potential of peroxy radicals is only about 1.3V, OH radicals (when the potential of OH radicals is 2.73V, PH 4) play a major role in fenton's reagent.
Therefore, the plasma generated in the method carries a large number of hydroxyl radicals and oxygen atoms, and the oxidation capacity of the plasma is far stronger than that of the existing strong oxidation technology due to the super-strong oxidation capacity of the hydroxyl radicals, the oxygen atoms with the extremely strong oxidation capacity, the oxidized nitroxide radicals and nitrite ions and the Fenton reagent with the strong oxidation capacity, so that various pollutants in the sewage can be degraded without selectivity.
It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept also fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a sewage treatment device, includes the box, its characterized in that:
the opening part of box is provided with anodal insulation board, anodal insulation board lid fits the box forms a reaction cavity, be equipped with discharge device in the reaction cavity, discharge device from top to bottom includes positive plate, a plurality of anodal electric post, wire net, negative pole piece in proper order, discharge device's bottom is provided with the negative pole insulation board.
2. The sewage treatment apparatus of claim 1, wherein:
the non-peripheral region of the positive insulating plate is correspondingly provided with a first bolt hole, the non-peripheral region of the positive plate is correspondingly provided with a second bolt hole, a plurality of fastening screws are arranged between the positive insulating plate and the positive electric pole, and the fastening screws sequentially penetrate through the first bolt holes, the second bolt holes and the positive electric pole to be fixedly connected.
3. The sewage treatment apparatus of claim 2, wherein:
and the non-peripheral area of the negative plate is correspondingly provided with a through hole, and the contour of the inner wall of the through hole is matched with the contour of the outer part of the positive electrode post.
4. The sewage treatment apparatus according to claim 1 or 2, wherein:
the box body is fixedly connected with the anode insulating plate through a guide pillar.
5. The sewage treatment apparatus according to claim 1 or 2, wherein:
and a water inlet pipeline is arranged on one side of the outer surface of the box body, and a drainage pipeline is arranged on the other side of the outer surface of the box body.
6. The sewage treatment apparatus of claim 5, wherein:
the water inlet pipeline is provided with a water level control valve, the water level control valve controls the opening/closing of the water inlet pipeline, the drainage pipeline is provided with a solenoid valve switch, and the solenoid valve switch controls the opening/closing of the drainage pipeline.
7. The sewage treatment apparatus according to claim 1 or 2, wherein:
the positive plate is a positive conductive copper plate, and the negative plate is a negative conductive copper plate.
8. A sewage treatment method of a sewage treatment apparatus, characterized in that the sewage treatment apparatus is the sewage treatment apparatus according to any one of the above claims 1 to 7;
the sewage treatment method comprises the following steps:
the sewage in the sewage pool is controlled by a water level control valve of sewage treatment equipment to be sent into a reaction chamber through a water inlet pipeline, air and sewage are used as gas-liquid mixed liquid, the gas of the gas-liquid mixed liquid is excited by a high-frequency high-voltage electric field through a discharge device to generate plasma, the plasma is fully contacted with the sewage to remove organic pollutants in the sewage, wherein the plasma carries a large amount of hydroxyl radicals and oxygen atoms with oxidation capacity;
and starting a solenoid valve switch on the drainage pipeline, and discharging the purified clean water through the drainage pipeline.
9. The wastewater treatment method according to claim 8, characterized in that:
when the discharge device excites the gas-liquid mixed liquid and gas to generate plasma through a high-frequency high-voltage electric field, the plasma is also in full contact with organic pollutants in sewage through nitrogen oxygen free radicals and nitrite ions with oxidability carried by the plasma so as to remove the organic pollutants in the sewage.
10. The sewage treatment method according to claim 8 or 9, characterized in that:
when the gas-liquid mixed liquid gas is excited by a high-frequency high-voltage electric field through the discharge device to generate plasma, iron ions are generated by the synergistic effect of ultraviolet light and hydrogen peroxide and the synergistic effect of the ultraviolet light and ozone in combination with ferrous ions in the plasma discharge process, and a Fenton reaction is generated to remove organic pollutants which are difficult to degrade in sewage.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887565A (en) * | 2022-04-15 | 2022-08-12 | 浙江理工大学 | Liquid phase discharge device and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117977A1 (en) * | 2001-02-28 | 2002-08-29 | Park Sung Don | Discharge device and plasma gas generating apparatus employing same |
| KR20030022733A (en) * | 2001-09-10 | 2003-03-17 | 이학주 | Water discharge in a dielectric barrier discharge system to generate an ozonated water |
| CN107445284A (en) * | 2017-09-04 | 2017-12-08 | 南京大学 | A kind of device of dielectric barrier discharge plasma processing sewage |
| CN108191010A (en) * | 2018-01-31 | 2018-06-22 | 许玉蕊 | Column electrostatic sewage-treatment plant |
| CN109319914A (en) * | 2018-10-15 | 2019-02-12 | 南京大学 | A kind of device using plate plate gas-liquid discharge in water corona treatment sewage |
| CN210163174U (en) * | 2019-06-21 | 2020-03-20 | 深圳市中科量能科技发展有限公司 | Sewage treatment equipment |
-
2019
- 2019-06-21 CN CN201910540630.0A patent/CN112110513A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117977A1 (en) * | 2001-02-28 | 2002-08-29 | Park Sung Don | Discharge device and plasma gas generating apparatus employing same |
| KR20030022733A (en) * | 2001-09-10 | 2003-03-17 | 이학주 | Water discharge in a dielectric barrier discharge system to generate an ozonated water |
| US20040245087A1 (en) * | 2001-09-10 | 2004-12-09 | Hag-Joo Lee | Water discharge in a dielectric barrier discharge system to generate an ozonated water |
| CN107445284A (en) * | 2017-09-04 | 2017-12-08 | 南京大学 | A kind of device of dielectric barrier discharge plasma processing sewage |
| CN108191010A (en) * | 2018-01-31 | 2018-06-22 | 许玉蕊 | Column electrostatic sewage-treatment plant |
| CN109319914A (en) * | 2018-10-15 | 2019-02-12 | 南京大学 | A kind of device using plate plate gas-liquid discharge in water corona treatment sewage |
| CN210163174U (en) * | 2019-06-21 | 2020-03-20 | 深圳市中科量能科技发展有限公司 | Sewage treatment equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887565A (en) * | 2022-04-15 | 2022-08-12 | 浙江理工大学 | Liquid phase discharge device and application thereof |
| CN114887565B (en) * | 2022-04-15 | 2024-01-12 | 浙江理工大学 | Liquid phase discharge device and application thereof |
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