CN113998827A - Advanced oxidation treatment device and treatment method for desulfurization wastewater of oil and gas field - Google Patents
Advanced oxidation treatment device and treatment method for desulfurization wastewater of oil and gas field Download PDFInfo
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- CN113998827A CN113998827A CN202111442018.3A CN202111442018A CN113998827A CN 113998827 A CN113998827 A CN 113998827A CN 202111442018 A CN202111442018 A CN 202111442018A CN 113998827 A CN113998827 A CN 113998827A
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 132
- 230000003647 oxidation Effects 0.000 title claims abstract description 131
- 239000002351 wastewater Substances 0.000 title claims abstract description 123
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 76
- 230000023556 desulfurization Effects 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005273 aeration Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 34
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 28
- 230000001590 oxidative effect Effects 0.000 claims description 14
- 239000007800 oxidant agent Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 5
- 230000002195 synergetic effect Effects 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000010802 sludge Substances 0.000 abstract description 6
- 238000004886 process control Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 64
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- 239000012855 volatile organic compound Substances 0.000 description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 8
- 235000011941 Tilia x europaea Nutrition 0.000 description 8
- 239000004571 lime Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 6
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical group NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 5
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 5
- 238000011272 standard treatment Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 150000004982 aromatic amines Chemical class 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 4
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000149 chemical water pollutant Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000006056 electrooxidation reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000011268 retreatment Methods 0.000 description 2
- 238000007725 thermal activation Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000010792 warming Methods 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
- C02F1/72—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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- 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
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/322—Volatile compounds, e.g. benzene
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses an advanced oxidation treatment device and method for oil and gas field desulfurization wastewater, and solves the technical problems that the advanced oxidation technology adopted for treating the oil and gas field desulfurization wastewater in the prior art is harsh in reaction conditions, large in sludge amount and difficult to treat. The device comprises an advanced oxidation tank (1), a temperature sensor for monitoring the temperature of wastewater in the advanced oxidation tank (1), a pressure sensor for monitoring the pressure in the advanced oxidation tank (1) and a control device; a heating device and an aeration device are arranged in the advanced oxidation tank (1), and a wastewater inlet pipe and a wastewater outlet pipe are connected to the advanced oxidation tank (1); the heating device, the aeration device, the temperature sensor and the pressure sensor are respectively and electrically connected with the control device. The advanced oxidation treatment device for the desulfurization wastewater of the oil and gas field has the advantages of small occupied area, high treatment efficiency, flexibility and controllable effect; simple reaction conditions, small sludge amount, easy treatment, low power consumption and easy process control.
Description
Technical Field
The invention relates to the field of desulfurization wastewater treatment, in particular to an advanced oxidation treatment device and method for desulfurization wastewater in an oil and gas field.
Background
In recent years, the exploration and development of sulfur-containing natural gas is increased continuously, besides sulfides, COD (chemical oxygen demand) value in the wastewater is higher in gas production associated formation water, and the main components are aromatic compounds and amine substances, so that the biochemical property is poor and the degradation is difficult under general conditions, and COD (chemical oxygen demand) of the subsequent wastewater treated by reaching the standard is difficult to reach the standard.
At present, the advanced oxidation technology, also called deep oxidation technology, is mainly adopted for the wastewater at home and abroad, and is characterized by generating hydroxyl free radicals (OH) with strong oxidation capacity, and the common advanced oxidation method under high temperature and high pressure, electricity, sound and light irradiation is a Fenton treatment method and an electrochemical oxidation method.
The Fenton treatment method is a deep oxidation technology, namely, Fe and H are utilized2O2The chain reaction between the two components catalyzes to generate OH free radicals which have strong oxidizing property and can oxidize various toxic and nondegradable organic compounds so as to achieve the purpose of removing pollutants. Is particularly suitable for the oxidation treatment of organic wastewater such as landfill leachate which is difficult to biodegrade or is difficult to be effectively oxidized by common chemical. The Fenton method for treating the landfill leachate mainly has the influence factors of pH and H2O2The amount of the iron salt and the amount of the iron salt. But the Fenton treatment method has harsh reaction conditions, large sludge amount and difficult treatment;
the electrochemical oxidation method refers to a process for removing pollutants in sewage through electrode reaction oxidation, and can be divided into direct oxidation and indirect oxidation. The direct oxidation mainly depends on the oxidation of OH generated by the discharge of water molecules on the surface of the anode, and OH attacks the organic matters adsorbed on the anode in an electrophilic manner to generate oxidation reaction to remove pollutants; indirect oxidation is meant by C12/C10 in solution. The oxidation of (a) removes the contaminants. Electrochemical oxidation of COD and NH in landfill leachate3N has good removing effect, and has the defects of high power consumption, difficult process control and easy generation of harmful gases such as chlorine and the like.
Therefore, the research on the advanced oxidation treatment device for the desulfurization wastewater of the oil and gas field, which has the advantages of small occupied area, high treatment efficiency, flexibility and controllable effect, is an effective way for matching treatment of the desulfurization wastewater of the oil and gas field to realize subsequent final standard treatment.
The applicant has found that the prior art has at least the following technical problems:
1. the advanced oxidation technology adopted for treating the desulfurization wastewater of the oil and gas field in the prior art has the defects of harsh reaction conditions, large sludge amount and difficult treatment;
2. the advanced oxidation technology adopted for treating the desulfurization wastewater of the oil and gas field in the prior art has the defects of high power consumption, difficult process control and easy generation of harmful gases such as chlorine and the like.
Disclosure of Invention
The invention aims to provide an advanced oxidation treatment device and method for oil and gas field desulfurization wastewater, and aims to solve the technical problems that the advanced oxidation technology adopted for treating the oil and gas field desulfurization wastewater in the prior art is harsh in reaction conditions, large in sludge amount and difficult to treat.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides an advanced oxidation treatment device for desulfurization wastewater in an oil and gas field, which comprises an advanced oxidation tank, a temperature sensor for monitoring the temperature of wastewater in the advanced oxidation tank, a pressure sensor for monitoring the pressure in the advanced oxidation tank and a control device, wherein the temperature sensor is connected with the pressure sensor; the advanced oxidation tank is internally provided with a heating device and an aeration device, and is provided with a wastewater inlet, a wastewater outlet and a dosing inlet; the heating device, the aeration device, the temperature sensor and the pressure sensor are respectively and electrically connected with the control device.
Optionally or preferably, the device further comprises a persulfate dosing stirring tank, the persulfate dosing stirring tank is connected with the advanced oxidation tank through a dosing pipe, the dosing pipe is connected with a metering pump, and the metering pump is electrically connected with the control device.
Optionally or preferably, the heating device is a dividing wall type heat exchanger; the dividing wall type heat exchanger comprises a steam generating device, a steam inlet, a heating coil and a condensed water outlet which are connected in sequence; the steam inlet and the condensed water outlet are both arranged on the advanced oxidation tank, and the steam generating device is electrically connected with the control device.
Optionally or preferably, the aeration device comprises a blower, an air inlet arranged on the advanced oxidation tank, an air pipe and a microporous aeration pipe which are connected in sequence; the advanced oxidation tank is also provided with an air outlet; the blower is electrically connected with the control device.
Optionally or preferably, the wastewater inlet is connected with a wastewater inlet pipe, the wastewater inlet pipe is connected with a feeding pump, and the feeding pump is electrically connected with the control device.
Optionally or preferably, a liquid level meter for monitoring the waste water liquid level in the advanced oxidation tank is connected to the advanced oxidation tank, and the liquid level meter is electrically connected with the control device; the liquid level meter comprises a high-level liquid level meter and a low-level liquid level meter which are arranged on the upper portion and the lower portion of the advanced oxidation tank, and the advanced oxidation tank is provided with a high-level liquid level meter interface and a low-level liquid level meter interface respectively at the positions where the high-level liquid level meter and the low-level liquid level meter are arranged.
Optionally or preferably, a manhole is arranged on the advanced oxidation tank.
Alternatively or preferably, a sewage draining outlet is arranged at the lower part of the advanced oxidation tank.
Alternatively or preferably, the control device is a PLC control cabinet.
The invention provides an advanced oxidation treatment method of oil and gas field desulfurization wastewater, which is applied to the advanced oxidation treatment device of oil and gas field desulfurization wastewater for treatment, and specifically comprises the following steps: desulfurization wastewater of the oil and gas field enters an advanced oxidation tank through a wastewater inlet, and a persulfate advanced oxidant is added through a dosing inlet; heating by a heating device, controlling the temperature of the desulfurization wastewater of the oil-gas field in the advanced oxidation tank at 75-85 ℃, keeping the reaction time for 2.5-3.5h, simultaneously carrying out synergistic oxidation aeration by an aeration device, stripping out part of volatile organic compounds (polycyclic aromatic hydrocarbon and aromatic amine), and treating the volatile organic compounds with air from an air outlet by an active carbon gas filter; and the reacted desulfurization wastewater of the oil and gas field is sent out from a wastewater outlet.
Further, the persulfate high-grade oxidant comprises persulfate, sodium hydroxide and lime fine powder; the persulfate is sodium persulfate or potassium persulfate.
Furthermore, the adding amount of the persulfate is 2-2.8 per mill of the weight of the desulfurization wastewater of the oil and gas field, the adding amount of the sodium hydroxide is 0.6-0.8 per mill of the weight of the desulfurization wastewater of the oil and gas field, and the adding amount of the lime fine powder is 2-2.5 per mill of the weight of the desulfurization wastewater of the oil and gas field.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
(1) the advanced oxidation treatment device for the desulfurization wastewater of the oil and gas field, provided by the invention, is small in occupied area, high in treatment efficiency, flexible and flexible, and controllable in effect, and is an effective way for realizing subsequent final standard treatment by matching with treatment of the desulfurization wastewater of the oil and gas field. Meanwhile, the persulfate-based oil and gas field desulfurization wastewater advanced oxidation device is combined with a rear-end desalination standard treatment process, so that the persulfate-based oil and gas field desulfurization wastewater advanced oxidation device has important meanings of recovering heat sources, reducing cost and protecting the environment.
(2) According to the method for the advanced oxidation treatment of the desulfurization wastewater in the oil and gas field, the persulfate advanced oxidant is adopted for oxidation, the persulfate advanced oxidant can be prepared into different proportions according to the concentration of organic matters in the desulfurization wastewater for retreatment, raw steam is adopted for heating and heating for thermal activation, the oxidation capacity is improved under the air aeration, high-molecular organic matters and organic matters which are difficult to degrade are decomposed into low-molecular organic matters which are easy to degrade, and the biodegradability of subsequent treatment is improved; the scheme has obvious environment-friendly effect, is combined with subsequent thermal distillation desalination treatment, and can greatly improve the energy utilization rate. The advanced oxidation treatment method for the desulfurization wastewater of the oil and gas field provided by the invention is not easy to generate harmful gases such as chlorine and the like.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1. an advanced oxidation tank; 2. a thermometer interface; 3. a pressure tap; 4. persulfate dosing stirring tank; 5. a medicine feeding pipe; 6. a metering pump; 7. a steam inlet; 8. a condensed water outlet; 9. an air inlet, 10 and a microporous aeration pipe; 11. an air outlet; 12. a high level gauge interface; 13. a low level gauge interface; 14. a manhole; 15. a wastewater inlet; 16. a waste water outlet; 17. a sewage draining outlet; 18. a feed pump; 19. a heating coil; 20. a wastewater inlet pipe; 21. a dosing inlet; 22. an air tube.
Detailed Description
Example 1:
as shown in fig. 1:
the invention provides an advanced oxidation treatment device for desulfurization wastewater in an oil and gas field, which comprises an advanced oxidation tank 1, a temperature sensor for monitoring the temperature of wastewater in the advanced oxidation tank 1, a pressure sensor for monitoring the pressure in the advanced oxidation tank 1 and a control device, wherein the temperature sensor is arranged on the upper part of the advanced oxidation tank; a heating device and an aeration device are arranged in the advanced oxidation tank 1, and a wastewater inlet 15, a wastewater outlet 16 and a drug adding inlet 21 are arranged on the advanced oxidation tank 1; the advanced oxidation tank 1 is connected with a wastewater inlet pipe and a wastewater outlet pipe, and the wastewater inlet pipe and the wastewater outlet pipe are respectively connected with a wastewater inlet 15 and a wastewater outlet 16 of the advanced oxidation tank 1; the temperature sensor and the pressure sensor are respectively connected to a thermometer interface 2 and a pressure gauge interface 3 of the advanced oxidation tank 1; the heating device, the aeration device, the temperature sensor and the pressure sensor are respectively and electrically connected with the control device.
The advanced oxidation treatment device for the desulfurization wastewater of the oil and gas field, provided by the invention, is small in occupied area, high in treatment efficiency, flexible and flexible, and controllable in effect, and is an effective way for realizing subsequent final standard treatment by matching with treatment of the desulfurization wastewater of the oil and gas field. Meanwhile, the persulfate-based oil and gas field desulfurization wastewater advanced oxidation device is combined with a rear-end desalination standard treatment process, so that the persulfate-based oil and gas field desulfurization wastewater advanced oxidation device has important meanings of recovering heat sources, reducing cost and protecting the environment. When the advanced oxidation treatment device for desulfurization wastewater of oil and gas fields is applied to oxidation treatment, persulfate advanced oxidant is adopted for oxidation, the persulfate advanced oxidant can be prepared into different proportions according to the concentration of organic matters in the desulfurization wastewater for retreatment, raw steam is adopted for heating and warming for thermal activation, the oxidation capacity is improved under the air aeration, high-molecular organic matters and organic matters which are difficult to degrade are decomposed into low-molecular organic matters which are easy to degrade, and the biodegradability of subsequent treatment is improved; the scheme has obvious environment-friendly effect, and can greatly improve the energy utilization rate by combining with the subsequent thermal distillation desalination treatment; the advanced oxidation treatment method for desulfurization wastewater in oil and gas fields has the advantages of simple reaction conditions, small sludge amount, easy control, low power consumption, easy process control and difficult generation of harmful gases such as chlorine and the like.
As an optional implementation mode, the device further comprises a persulfate dosing stirring tank 4, the persulfate dosing stirring tank 4 is connected with the advanced oxidation tank 1 through a dosing pipe 5, the dosing pipe 5 is connected to a dosing inlet 21, a metering pump 6 is connected to the dosing pipe 5, and the metering pump 6 is electrically connected with a control device.
As an optional embodiment, a stirrer is arranged in the persulfate dosing stirring tank 4.
As an alternative embodiment, the heating device is a dividing wall type heat exchanger; the dividing wall type heat exchanger comprises a steam generating device, a steam inlet 7, a heating coil 19 and a condensed water outlet 8 which are connected in sequence; the steam inlet 7 and the condensed water outlet 8 are both arranged on the advanced oxidation tank 1, and the steam generating device is electrically connected with the control device.
As an optional embodiment, the aeration device comprises a blower, an air inlet 9, an air pipe 22 and a microporous aeration pipe 10 which are connected in sequence, wherein the air inlet 9, the air pipe 22 and the microporous aeration pipe 10 are arranged on the advanced oxidation tank 1, and an air outlet 11 is also arranged on the advanced oxidation tank 1; the blower is electrically connected with the control device.
As an alternative embodiment, the microporous aeration pipe 10 is installed at the bottom of the advanced oxidation tank 1.
As an optional embodiment, a wastewater inlet pipe 20 is connected to the wastewater inlet 15, a feeding pump 18 is connected to the wastewater inlet pipe 20, and the feeding pump 18 is electrically connected to the control device.
As an optional embodiment, a liquid level meter for monitoring the waste water liquid level in the advanced oxidation tank 1 is connected to the advanced oxidation tank 1, and the liquid level meter is electrically connected with a control device; the liquid level meters comprise a high level liquid level meter and a low level liquid level meter which are arranged at the upper part and the lower part of the advanced oxidation tank 1; the advanced oxidation tank 1 is provided with a high level liquid level meter interface 12 and a low level liquid level meter interface 13 at the positions where the high level liquid level meter and the low level liquid level meter are arranged, and the positions of the high level liquid level meter and the low level liquid level meter are connected to the high level liquid level meter interface 12 and the low level liquid level meter interface 13 respectively.
As an alternative embodiment, a manhole 14 is provided on the advanced oxidation tank 1. The manhole 14 is provided to allow a worker to observe a reaction state in the advanced reaction tank at any time or when necessary.
As an alternative embodiment, the lower portion of the advanced oxidation tank 1 is provided with a drain outlet 15. The drain outlet 15 is provided to discharge cleaning wastewater when the advanced oxidation tank 1 is cleaned.
As an alternative embodiment, the control device is a PLC control cabinet.
Example 2:
the invention provides an advanced oxidation treatment method of oil and gas field desulfurization wastewater, which is applied to the advanced oxidation treatment device of oil and gas field desulfurization wastewater in the embodiment 1 for treatment, and specifically comprises the following steps:
(1) desulfurization wastewater of an oil and gas field enters the advanced oxidation tank 1 from a wastewater inlet pipe 20 through a feed pump 18, and a persulfate advanced oxidant is added at the same time; in the embodiment, the persulfate high-grade oxidant consists of sodium persulfate, sodium hydroxide and lime fine powder; the adding amount of the sodium persulfate is 2.5 per mill of the weight of the desulfurization wastewater of the oil and gas field, the adding amount of the sodium hydroxide is 0.6 per mill of the weight of the desulfurization wastewater of the oil and gas field, and the adding amount of the lime fine powder is 2 per mill of the weight of the desulfurization wastewater of the oil and gas field.
(2) Introducing 120 ℃ raw steam to raise the temperature, controlling the temperature of the desulfurization wastewater of the oil-gas field in the advanced oxidation tank 1 to be 80 ℃, reacting for 3 hours, simultaneously performing synergistic oxidation aeration by adopting an aeration device, stripping out partial volatile organic compounds (polycyclic aromatic hydrocarbon and aromatic amine), wherein the volatile organic compounds are discharged from an air outlet 11 together with air, and then treating by an active carbon gas filter;
(3) the reacted desulfurization wastewater of the oil and gas field is sent out from a wastewater outlet 16.
Example 3:
the invention provides an advanced oxidation treatment method of oil and gas field desulfurization wastewater, which is applied to the advanced oxidation treatment device of oil and gas field desulfurization wastewater in the embodiment 1 for treatment, and specifically comprises the following steps:
(1) desulfurization wastewater of an oil and gas field enters the advanced oxidation tank 1 from a wastewater inlet pipe 20 through a feed pump 18, and a persulfate advanced oxidant is added at the same time; in the embodiment, the persulfate high-grade oxidant consists of potassium persulfate, sodium hydroxide and lime fine powder; the adding amount of the potassium persulfate is 2.8 per mill of the weight of the desulfurization wastewater of the oil and gas field, the adding amount of the sodium hydroxide is 0.7 per mill of the weight of the desulfurization wastewater of the oil and gas field, and the adding amount of the lime fine powder is 2.3 per mill of the weight of the desulfurization wastewater of the oil and gas field.
(2) Introducing 120 ℃ raw steam to raise the temperature, controlling the temperature of the desulfurization wastewater of the oil-gas field in the advanced oxidation tank 1 at 75 ℃, keeping the reaction time for 3.5 hours, simultaneously performing synergistic oxidation aeration by adopting an aeration device, stripping out part of volatile organic compounds (polycyclic aromatic hydrocarbon and aromatic amine), wherein the volatile organic compounds are removed together with air from an air outlet 11, and then treating the volatile organic compounds by an active carbon gas filter;
(3) the reacted desulfurization wastewater of the oil and gas field is sent out from a wastewater outlet 16.
Example 4:
the invention provides an advanced oxidation treatment method of oil and gas field desulfurization wastewater, which is applied to the advanced oxidation treatment device of oil and gas field desulfurization wastewater in the embodiment 1 for treatment, and specifically comprises the following steps:
(1) desulfurization wastewater of an oil and gas field enters the advanced oxidation tank 1 from a wastewater inlet pipe 20 through a feed pump 18, and a persulfate advanced oxidant is added at the same time; in the embodiment, the persulfate high-grade oxidant consists of sodium persulfate, sodium hydroxide and lime fine powder; the adding amount of the sodium persulfate is 2 per mill of the weight of the desulfurization wastewater of the oil and gas field, the adding amount of the sodium hydroxide is 0.8 per mill of the weight of the desulfurization wastewater of the oil and gas field, and the adding amount of the lime fine powder is 2.5 per mill of the weight of the desulfurization wastewater of the oil and gas field.
(2) Introducing 120 ℃ raw steam to raise the temperature, controlling the temperature of the desulfurization wastewater of the oil-gas field in the advanced oxidation tank 1 to be 85 ℃, controlling the reaction retention time to be 2.5, simultaneously adopting an aeration device to carry out synergistic oxidation aeration, stripping out partial volatile organic compounds (polycyclic aromatic hydrocarbon and aromatic amine), and removing the volatile organic compounds from an air outlet 11 along with the air, and then treating the volatile organic compounds through an active carbon gas filter.
(3) The reacted desulfurization wastewater of the oil and gas field is sent out from a wastewater outlet 16.
Examples 2-4 COD, BOD, B/C of the wastewater from oil and gas field desulfurization treatment and after treatment are shown in Table 1 below:
TABLE 1 examples 2-4 effects of wastewater treatment
Claims (10)
1. The utility model provides an advanced oxidation treatment device of oil gas field desulfurization waste water which characterized in that: comprises an advanced oxidation tank (1), a temperature sensor for monitoring the temperature of the wastewater in the advanced oxidation tank (1), a pressure sensor for monitoring the pressure in the advanced oxidation tank (1) and a control device; a heating device and an aeration device are arranged in the advanced oxidation tank (1), and a wastewater inlet (15), a wastewater outlet (16) and a drug adding inlet (21) are arranged on the advanced oxidation tank (1); the heating device, the aeration device, the temperature sensor and the pressure sensor are respectively and electrically connected with the control device.
2. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: still include persulfate and add medicine agitator tank (4), persulfate adds medicine agitator tank (4) and is connected through adding pencil (5) between advanced oxidation groove (1), be connected with measuring pump (6) on adding pencil (5), measuring pump (6) are connected with controlling means electricity.
3. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: the heating device is a dividing wall type heat exchanger; the dividing wall type heat exchanger comprises a steam generating device, a steam inlet (7), a heating coil (19) and a condensed water outlet (8) which are connected in sequence; the steam inlet (7) and the condensed water outlet (8) are both arranged on the advanced oxidation tank (1), and the steam generating device is electrically connected with the control device.
4. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: the aeration device comprises a blower, an air inlet (9) arranged on the advanced oxidation tank (1), an air pipe (22) and a microporous aeration pipe (10) which are connected in sequence; the advanced oxidation tank (1) is also provided with an air outlet (11); the blower is electrically connected with the control device.
5. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: the waste water inlet (15) is connected with a waste water inlet pipe (20), the waste water inlet pipe (20) is connected with a feeding pump (18), and the feeding pump (18) is electrically connected with a control device.
6. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: the advanced oxidation tank (1) is connected with a liquid level meter for monitoring the liquid level of the wastewater in the advanced oxidation tank (1), and the liquid level meter is electrically connected with the control device; the liquid level meter comprises a high-level liquid level meter and a low-level liquid level meter which are arranged on the upper portion and the lower portion of the advanced oxidation tank (1), wherein a high-level liquid level meter interface (12) and a low-level liquid level meter interface (13) are respectively arranged at the positions of the high-level liquid level meter and the low-level liquid level meter in the advanced oxidation tank (1).
7. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: and a manhole (14) is arranged on the advanced oxidation tank (1).
8. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: the lower part of the advanced oxidation tank (1) is provided with a sewage outlet (15).
9. The advanced oxidation treatment device for desulfurization wastewater in oil and gas fields as claimed in claim 1, characterized in that: the control device is a PLC control cabinet.
10. An advanced oxidation treatment method for desulfurization wastewater of oil and gas fields is characterized in that: the oil and gas field desulfurization wastewater advanced oxidation treatment device disclosed in claims 1-9 is applied for treatment, and specifically comprises the following steps: desulfurization wastewater of the oil and gas field enters the advanced oxidation tank (1) through a wastewater inlet (15), and a persulfate advanced oxidant is added through a dosing inlet (21); heating by a heating device, controlling the temperature of the desulfurization wastewater of the oil-gas field in the advanced oxidation tank (1) at 75-85 ℃, and the reaction residence time to be 2.5-3.5h, and simultaneously carrying out synergistic oxidation aeration by an aeration device; the reacted desulfurization wastewater of the oil and gas field is sent out from a wastewater outlet (16).
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| CN202111442018.3A CN113998827A (en) | 2021-11-30 | 2021-11-30 | Advanced oxidation treatment device and treatment method for desulfurization wastewater of oil and gas field |
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| CN202111442018.3A CN113998827A (en) | 2021-11-30 | 2021-11-30 | Advanced oxidation treatment device and treatment method for desulfurization wastewater of oil and gas field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417528A (en) * | 2022-09-16 | 2022-12-02 | 安徽亿臻环境工程有限公司 | Combined advanced oxidation sewage treatment method |
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