CN210974290U - Skid-mounted system for purifying composite flooding oil extraction sewage - Google Patents
Skid-mounted system for purifying composite flooding oil extraction sewage Download PDFInfo
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- CN210974290U CN210974290U CN201921370265.5U CN201921370265U CN210974290U CN 210974290 U CN210974290 U CN 210974290U CN 201921370265 U CN201921370265 U CN 201921370265U CN 210974290 U CN210974290 U CN 210974290U
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Abstract
The utility model discloses a skid-mounted system for purifying compound flooding oil extraction sewage, which comprises a circulation tank, wherein a photocatalyst CNPs inlet pipe, a hydrochloric acid pipe and a sewage pipe are connected above the circulation tank, a circulation pipe is arranged on the side wall of the circulation tank, and the other end of the circulation pipe is communicated with the upper part of the circulation tank; the sewage pump is communicated with the top of the magnetic nano stirring tank through a pipeline, a second sewage pump and a tubular magnetic separator are sequentially connected below the magnetic nano stirring tank through the pipeline, and the tubular magnetic separator is respectively connected with a clean water tank and a recovery tank through the pipeline; an alkali liquor pipe is connected above the recovery tank, and a sludge tank is connected to one side of the recovery tank through a pipeline. The utility model has the characteristics of simple structure, treatment effeciency height, automatic operation etc, be convenient for realize the miniaturization and the sled dress of device for keep away from sewage treatment plant's the on-the-spot sewage treatment in oil field operation and offshore oil field.
Description
Technical Field
The utility model relates to an oily sewage handles technical field, concretely relates to sled dress system for purifying compound oil recovery sewage that drives.
Background
In recent years, most oil fields in China have entered into tertiary oil recovery stage, wherein the composite flooding oil recovery technology is the most typical chemical flooding oil recovery process. The complex flooding greatly increases the difficulty of the produced liquid treatment while improving the recovery ratio. The compound flooding produced fluid is complex in composition, and simultaneously contains an oil displacement agent (polymer, surfactant and alkali), crude oil, solid suspended matters and the like, wherein the surfactant can greatly reduce the oil-water interfacial tension to promote the crude oil to exist in an emulsified oil form with the size below 100 mu m, and the existence of the water-soluble polymer can further improve the stability of the emulsion and slow down the settling velocity of the solid suspended matters. Therefore, the compound flooding produced fluid has the characteristics of high viscosity and strong emulsion stability, and compared with the conventional water flooding produced fluid, the treatment difficulty of the compound flooding produced fluid is greatly increased.
The existing composite flooding sewage treatment technologies comprise the following technologies:
1. the gravity separation method has the main principle that under the action of gravity, the density difference of oil and water is utilized to promote the automatic separation of oil and water, the method is common, the method is mature in the oil field sewage treatment process, and the oil field sewage with simple main treatment components is treated, for example, patent CN200710100015.5 discloses a ternary combination flooding oil-containing sewage treatment process for an oil field, a flocculating agent is added, the sedimentation is carried out by utilizing gravity, and then the treatment process is filtered by a filtering device, the treated produced liquid can reach the oil content of less than or equal to 30 mg/L, and the suspended matter content of less than or equal to 30 mg/L, and for example, patent CN201420682385.X discloses a composite flooding experimental produced liquid demulsifying device which forms a hot water demulsifying circulation system to provide an environment for the produced liquid and enables the turbid produced liquid to be layered by the action of gravity.
2. Air floatation: the working principle of the air floatation method is that a large amount of micro-bubbles are introduced or released in the oily sewage, the micro-bubbles are captured and adhered to fine oil droplets and oil-carrying impurity particles in the floating process, the floating of the oil droplets and the oil-carrying impurity particles in the sewage is accelerated, and the oil dirt gathered on the liquid surface is recovered by an oil skimmer. For example, patent CN201520806107.5 discloses a ternary combination flooding oily sewage treatment device, belonging to an air flotation sewage treatment device, which can improve the oil removal efficiency of oily sewage by using an air float, a vortex stabilizer and other devices, and the treatment capacity reaches 15m3The oil content of the purified sewage is less than 50 mg/L, and as the patent CN200510042643.3 discloses a method and a device for integrated dynamic balance treatment of the oil-containing sewage, the sewage is subjected to oil removal treatment by connecting an air floatation water treatment device and an oil-containing sewage pipeline in series.
3. Advanced oxidation method: the advanced oxidation method is to utilize an oxidant to carry out oxidative decomposition on pollutants in the oil extraction wastewater. For example, patent CN201420514917.9 discloses an advanced oxidation device for treating ternary combination flooding oily sewage in an oil field, which utilizes the ozone oxidation principle and uses devices such as an ozone tank and an ultraviolet lamp, wherein ozone enters the tank body and is irradiated by the ultraviolet lamp, the ozone and the ultraviolet lamp undergo a catalytic reaction to generate hydroxyl radicals to catalyze the degradation of a polymer, the turbidity of the treated sewage is 25NTU, and the viscosity is reduced to below 2 mpa.s. For another example, patent No. cn201720653193.x discloses "a contact oxidation apparatus of a sewage treatment system" which realizes contact oxidation of sewage by using a reaction tank, an air pump and the like. The method has the advantages of simple process, low oxygen solubility in water, low oxygen utilization rate, undesirable treatment effect and large equipment floor area.
4. Magnetic separation technology (hereinafter referred to as magnetic separation): the method is a technology which increases flocculation by using an external magnetic field, makes oil adsorbed on magnetic particles, and then separates magnetic substances and the oil adsorbed by the magnetic substances from water by a magnetic separation device, thereby achieving the purpose of rapid oil-water separation. At present, the magnetic separation technology has only a few immature oily sewage magnetic adsorption devices. The following are several types of conventional magnetic separation methods:
(1) centrifugal separation method: a method for separating substances having different specific gravities by centrifugal force. Since centrifuges and other devices can generate quite high angular velocities, the centrifugal force is much greater than the gravity force, and thus suspended matters in the solution are easy to precipitate out: and because the substances with different specific gravities are subjected to different centrifugal forces, the sedimentation speeds are different, and the substances with different specific gravities can be separated. For example, patent CN201220667771.2 discloses a "high-speed magnetic separation sewage treatment machine" which utilizes magnetic disc type sewage treatment machine, scraper and other devices, and adopts the centrifugal principle to separate oil stains. For another example, patent CN201721227431.7 discloses a "super-magnetic separation sewage treatment device" which realizes sewage treatment and magnetic seed recovery by using a magnetic rotary disc, a purging device and the like. The method has the advantages of large processing capacity and convenient management. The disadvantages are that: the floor area is large, the capital investment is high, and simultaneously, because the dirt in the sewage is directly adhered to the surface of the magnet, the magnet is difficult to scrape by the scraper blade, the decontamination effect is not ideal, and the centrifugal force of the magnetic disc on water flow is large, so that the requirement of high-speed operation decontamination cannot be met.
(2) Roller type magnetic separation method: the roller refers to a cylindrical rotatable object in a machine, and a power source (such as a motor) commonly used in the machine drives the roller to drive other materials to advance or utilizes the roller to generate pressure to process the materials. For example, patent CN200820128290.8 discloses a "double-roller crawler-type high-speed magnetic separation sewage treatment machine" which utilizes devices such as a decontamination crawler, an agitation tank, a scraper, etc., wherein the dirt is attached to the crawler, the crawler continuously moves forward, and the scraper hangs off the dirt on the surface. For another example, patent CN200820128289.5 discloses a roll-type high-speed magnetic separation sewage treatment machine, which utilizes magnetic separation rolls, motors, scrapers, etc. to remove sludge. The defects are that the device has a complex structure, dirt is not completely removed, the dirt is difficult to recover, fine impurity particles are difficult to remove, the sewage treatment is not comprehensive, and secondary pollution is easy to cause.
(3) And (3) a filtration method: the filtering technology is a technology for separating insoluble solids from water by utilizing a porous medium or a filter screen, and mainly adopts granular materials as filter materials (such as quartz sand, walnut shells, anthracite and the like) to remove oil and suspended matters in sewage through wetting coalescence and collision coalescence. For example, patent CN201720876744.9 discloses a new type of magnetic separation sewage treatment device, which recovers sludge by filtering sewage with a magnetic filter. For another example, patent CN201721579288.8 discloses a "magnetic adsorption treatment device for oily sewage" which realizes sewage treatment by using a filter screen to continuously block the passage of sediments. The method has the advantage of good effluent quality. The defects are that the operation cost is high, the filter screen needs to be replaced frequently, the adaptive capacity of the filter screen to the load change is weak, and the filter screen is easy to block. Meanwhile, the particle size of the filter material is limited, so that the particle size of the granular material cannot be further reduced to improve the filtering precision and efficiency.
To sum up, the existing compound flooding sewage treatment device is developed on the basis of the conventional water flooding sewage purification device, generally formed by combining a gravity settling device and an air flotation device and difficult to adapt to the requirements of compound flooding sewage treatment, while the magnetic separation device has a complex structure and lower treatment efficiency and is difficult to adapt to the requirements of oilfield sewage treatment, so that the existing oilfield sewage treatment process cannot meet the treatment requirements of compound flooding sewage, and the national standard that the oil content of directly-discharged sewage is lower than 5 mg/L is difficult to achieve in field implementation.
At present, water treatment agents based on surface-modified magnetic nano materials are widely concerned due to high treatment efficiency and recycling, for example, patent CN201510410429.2 discloses a magnetic nano material for removing heavy metal ions in sewage, patent CN201810953663.3 discloses a magnetic nano flocculant for emulsified oil wastewater treatment, patent CN201210384114.1 discloses a magnetic nano catalyst for sewage treatment, and patent CN200410026699.5 discloses a photocatalytic magnetic nano material for sewage treatment, but there is no introduction of a water treatment device suitable for the photocatalysis magnetic nano material and the industrial water treatment device. Conventional water treatment devices are not completely suitable for these new water treatment agents, e.g., (1) conventional water treatment devices generally do not consider the recovery and reuse of water treatment agents; (2) traditional water treatment devices are based primarily on gravity settling separation rather than magnetic separation; (3) the traditional water treatment device has larger volume and can not realize miniaturization and skid-mounted. The existing device suitable for the magnetic nano water treatment agent has a complex structure and is complex to operate, the magnetic water treatment agent cannot be recycled on line, and the skid-mounted device is not facilitated, such as the devices disclosed in patents CN201820944409.2 and CN 201610843497.2.
Therefore, the development of a skid-mounted device suitable for the novel magnetic nano water treatment agent has very important significance, and has special adaptability for realizing the rapid deep purification of the composite flooding oily sewage.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a skid-mounted system for purifying composite flooding oil extraction sewage; the system has the advantages of simple structure, large treatment capacity, high oil removal efficiency, recyclable water treatment agent and the like; the device can be miniaturized and skid-mounted, and is convenient to use in remote mining areas and offshore oil fields far away from sewage treatment plants.
In order to realize the aim, the utility model designs a skid-mounted system for purifying the composite flooding oil extraction sewage; the device comprises a circulating tank, wherein a photocatalyst CNPs inlet pipe, a hydrochloric acid pipe and a sewage pipe are connected above the circulating tank, a circulating pipe is arranged on the side wall of the circulating tank, and the other end of the circulating pipe is communicated with the upper part of the circulating tank; a sewage pump and a photocatalytic pipe are sequentially arranged on the circulating pipe; the sewage pump is communicated with the top of the magnetic nano stirring tank through a pipeline, a hydrochloric acid feeding pipe and a water purifying agent ANPs feeding pipe are connected above the magnetic nano stirring tank, a second sewage pump and a tubular magnetic separator are sequentially connected below the magnetic nano stirring tank through pipelines, and the tubular magnetic separator is respectively connected with a clean water tank and a recovery tank through pipelines; the recycling tank is characterized in that an alkali liquor pipe is connected to the upper portion of the recycling tank, one side of the recycling tank is connected with a sludge tank through a pipeline, a water purifying agent CNPs return pipe is arranged below the recycling tank, and the water purifying agent CNPs return pipe is communicated with a water purifying agent ANPs inlet pipe.
Furthermore, a concentration detector and a liquid level detector are arranged on the circulating tank, and control valves are respectively arranged on the photocatalyst CNPs inlet pipe, the hydrochloric acid pipe and the sewage pipe.
Furthermore, a sewage valve is arranged on the circulating pipe between the circulating tank and the sewage pump; and a high-pressure mercury lamp and an electromagnet are respectively arranged on two sides of the photocatalytic tube.
Still further, a control valve is arranged on a pipeline between the sewage pump and the photocatalytic pipe; and a control valve is arranged on a pipeline between the sewage pump and the magnetic nano stirring tank.
And furthermore, control valves are arranged on the hydrochloric acid feeding pipe, the water purifying agent ANPs feeding pipe, the alkali liquor pipe and the water purifying agent CNPs return pipes.
And furthermore, control valves are respectively connected to pipelines connected with the second sewage pump, the clean water tank and the recovery tank by the tubular magnetic separator.
Furthermore, a pH/conductivity detector is arranged on one side of the recovery tank; the pipeline of the recovery tank and the sludge tank is connected with a control valve (the main function of the recovery tank is to desorb the pollutants adsorbed on the surfaces of the water purifying agents ANPs by adjusting the pH value to be alkaline, and promote the clean ANPs to be quickly separated from the pollutants by an electromagnet, and because the particle size of the nano particles is extremely small, only the gravity separation action can take tens of hours, an external magnetic field is required to accelerate the separation action, and the separation can be completed within 1-5min approximately).
The photocatalyst CNPs and the water purifying agent ANPs are photocatalytic magnetic nanoparticles (CNPs) for degrading organic matters such as surfactants and polymers and aminated magnetic nanoparticles (ANPs) for adsorbing emulsified oil, polymers and solid suspended matters. The two nano treating agents can be purchased from the market, have the characteristics of large specific surface area, strong catalytic activity, high adsorption efficiency and the like, can efficiently degrade and adsorb pollutants, and are favorable for deeply purifying the composite flooding sewage.
The principle of the utility model
The utility model discloses a core device is photocatalysis pipe, tubular magnetic separator and recovery unit, compares with traditional sewage treatment plant, and its simple structure does not have complicated mechanical structure, easy to maintain. Meanwhile, the dosage of the medicament can be conveniently adjusted according to the concentration of pollutants in the treated sewage, thereby achieving the best treatment effect. The electromagnet is used as an external magnetic field, so that the separation of pollutants and sewage can be conveniently controlled. Firstly, mixing a treating agent CNPs and circulating sewage in a circulating tank, and carrying out photochemical reaction again by a photocatalytic tube to catalytically degrade a surfactant and a polymer in the sewage; after the treatment requirement is met, the electromagnet adsorbs CNPs; pumping sewage without surfactant and polymer into a stirring tank by a sewage pump, fully mixing the sewage and a treating agent ANPs under the stirring action, and adjusting the addition of hydrochloric acid to enable the pH value of the sewage to be neutral or weakly acidic; then the mixed liquid enters a tubular magnetic separator through a sewage pump, the ANPs carry emulsified oil to realize oil-water separation under the action of an external magnetic field, clear water enters a clear water tank, and oil sludge enters a recovery tank under the scouring action of sewage; after the pH value of the sludge is adjusted to be alkaline by alkali liquor, the separation of ANPs and oil sludge of the medicament is realized, and the aim of regenerating and reusing the medicament is fulfilled.
The utility model has the advantages that:
1) the utility model discloses light catalytic tube and tubular magnetic separator compare simple structure with traditional sewage treatment plant, do not have complicated mechanical structure, and device low cost, the clearance is maintained very conveniently.
2) The utility model discloses supporting two kinds of self-control nano-treatment agents that use are superparamagnetic nucleocapsid formula structure, can make it carry the pollutant under the effect of strengthening the magnetic field outside and separate from sewage, can disperse rapidly in sewage again after removing the magnetic field, can realize the quickly separating of pollutant, are favorable to improving sewage treatment's ability.
3) The utility model discloses a tubular magnetic separator uses tubular structure, compares traditional pot-type structure volume littleer, and efficiency is higher. The number, the length and the diameter of the pipelines can be flexibly adjusted according to the sewage treatment capacity, so that different treatment requirements can be met.
4) The utility model discloses with electromagnet as the magnetic field source, the gathering and the separation of control pollutant that can be quick, convenient.
5) The utility model discloses the mud that contains treating agent ANPs that produces can realize the separation of medicament and fatlute after adjusting pH to be alkaline, reaches the purpose of medicament repeated regeneration.
6) The utility model has the characteristics of simple structure, treatment effeciency height, automatic operation etc, be convenient for realize the miniaturization and the sled dress of device for keep away from sewage treatment plant's the on-the-spot sewage treatment in oil field operation and offshore oil field.
Drawings
FIG. 1 is a schematic view of a skid-mounted system for purifying compound flooding produced water;
in the figure, a circulation tank 1, a photocatalyst CNPs inlet pipe 1.1, a hydrochloric acid pipe 1.2, a sewage pipe 1.3, a circulation pipe 1.4, a liquid level detector 1.5, a sewage pump 2, a photocatalytic pipe 3, a high-pressure mercury lamp 3.1, an electromagnet 3.2, a magnetic nano stirring tank 4, a hydrochloric acid inlet pipe 4.1, a water purifying agent ANPs inlet pipe 4.2, a second sewage pump 5, a tubular magnetic separator 6, a clean water tank 7, a recovery tank 8, an alkaline liquid pipe 8.1, a water purifying agent CNPs return pipe 8.2, a PH/conductivity detector 8.3, a sludge tank 9, a control valve 10 and a sewage valve 11.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments for the understanding of those skilled in the art.
A skid-mounted system for purifying composite flooding oil-extraction wastewater as shown in fig. 1; the device comprises a circulating tank 1, wherein a photocatalyst CNPs inlet pipe 1.1, a hydrochloric acid pipe 1.2 and a sewage pipe 1.3 are connected above the circulating tank 1, a circulating pipe 1.4 is arranged on the side wall of the circulating tank 1, and the other end of the circulating pipe 1.4 is communicated with the upper part of the circulating tank 1; a concentration and liquid level detector 1.5 is arranged on the circulating tank 1, and control valves 10 are respectively arranged on a photocatalyst CNPs inlet pipe 1.1, a hydrochloric acid pipe 1.2 and a sewage pipe 1.3;
a sewage valve 11, a sewage pump 2 and a photocatalytic pipe 3 are sequentially arranged on the circulating pipe 1.4; the sewage pump 2 is communicated with the top of the magnetic nano stirring tank 4 through a pipeline, and both sides of the photocatalytic tube 3 are respectively provided with a high-pressure mercury lamp 3.1 and an electromagnet 3.2; a control valve 10 is arranged on a pipeline between the sewage pump 2 and the photocatalytic pipe 3;
a hydrochloric acid feeding pipe 4.1 and a water purifying agent ANPs feeding pipe 4.2 are connected above the magnetic nano stirring tank 4, and a control valve 10 is arranged on a pipeline between the sewage pump 2 and the magnetic nano stirring tank 4;
a second sewage pump 5 and a tubular magnetic separator 6 are sequentially connected below the magnetic nano stirring tank 4 through pipelines, and the tubular magnetic separator 6 is respectively connected with a clean water tank 7 and a recovery tank 8 through pipelines; an alkaline liquid pipe 8.1 is connected above the recovery tank 8, a sludge tank 9 is connected on one side of the recovery tank 8 through a pipeline, a water purifying agent CNPs return pipe 8.2 is arranged below the recovery tank 8, and the water purifying agent CNPs return pipe 8.2 is communicated with a water purifying agent ANPs inlet pipe 4.2.
The hydrochloric acid feed pipe 4.1, the water purifying agent ANPs feed pipe 4.2, the alkaline liquor pipe 8.1 and the water purifying agent CNPs return pipe 8.2 are all provided with control valves 10; the pipelines of the tubular magnetic separator 6, the second sewage pump 5, the clean water tank 7 and the recovery tank 8 are respectively connected with a control valve 10; a pH/conductivity detector 8.3 is arranged on one side of the recovery tank 8; the pipeline between the recovery tank 8 and the sludge tank 9 is connected with a control valve 10.
The tubular magnetic separator is purchased from the market and comprises a tubular magnetic adsorption device, a plastic pipeline and a branch pipeline, wherein the outer surface of the plastic pipeline is provided with an electromagnet); according to actual conditions, the skid-mounted system is connected with the single chip microcomputer, data acquisition and control are carried out by the single chip microcomputer, and sewage treatment and recycling of medicaments can be automatically completed.
The application method of the skid-mounted system for purifying the composite flooding oil extraction sewage comprises the following steps:
1) the composite flooding sewage enters a circulating tank 1, is detected by a concentration detector, hydrochloric acid is added into the sewage to adjust the pH value to the optimum value, meanwhile, photocatalyst CNPs are added, the mixed sewage is pumped into a photocatalytic tube 3 through a sewage pump 2, a high-pressure mercury lamp 3.1 is started to finish the process of photocatalytic degradation of organic pollutants, circulating liquid returns to the circulating tank to realize continuous degradation of the pollutants and finish the mixing process of the sewage and a medicament. And when the concentration detector on the circulating tank detects that the concentration detector is qualified, the electromagnet 3.2 on the photocatalytic tube 3 is turned on, and the magnetic photocatalyst CNPs are completely adsorbed on the tube wall of the photocatalytic tube 3, so that the separation of the CNPs from the sewage is realized.
2) Closing the control valve 10 between the sewage pump 2 and the photocatalytic pipe 3, and opening the control valve 10 between the sewage pump 2 and the magnetic nano stirring tank 4; pumping the sewage subjected to catalytic degradation into a magnetic nano stirring tank 4 by a sewage pump 2, adding hydrochloric acid into the magnetic nano stirring tank 4 to adjust the pH value to the optimum value, simultaneously introducing a water purifying agent ANPs, stirring and mixing, finishing the adsorption of emulsified oil by the water purifying agent, pumping the sewage into a tubular magnetic separator 6 by a second sewage pump 5, opening an electromagnet on the tubular magnetic separator 6, adsorbing oil sludge containing the magnetic water purifying agent ANPs on the pipe wall of a magnetic separation pipe, and allowing clear water to flow into a clear water tank 7 through a control valve 10 to finish the purification of the sewage;
3) closing the control valve 10 of the clean water tank 7, opening the control valve 10 between the tubular magnetic separator 8 and the recovery tank 8, closing the electromagnet on the tubular magnetic separator 8, flushing the attached oil sludge into the recovery tank 8 by the sewage, introducing alkaline liquor into the recovery tank to adjust the pH value to be optimal, separating the water purifying agents ANPs and the oil sludge into a water layer, and layering the oil sludge on the upper part, the water purifying agents ANPs and a small amount of sewage on the lower part. Opening a control valve 10 on a water purifying agent CNPs return pipe 8.2, under the action of gravity, enabling the water purifying agent ANPs and a small amount of sewage at the bottom to flow into the magnetic nano stirring tank 4 through a recovery pipe to complete recovery and reuse, closing the control valve 10 on the water purifying agent CNPs return pipe 8.2 when a conductivity detector detects that the liquid level falls to an oil layer, opening the control valve 10 between the recovery tank 8 and a sludge tank 9, and enabling the oil sludge to flow into a sludge tank 12, thereby completing recovery of the oil sludge.
The oil field sewage is comprehensively treated by the device, finally reaches the standard of discharge reinjection, clear water directly enters an oil field injection water system after reaching the standard, and recovered oil sludge is loaded by a tank truck for centralized treatment at regular intervals.
Other parts not described in detail are prior art. Although the above embodiments have been described in detail, it is only a part of the embodiments of the present invention, rather than all embodiments, and other embodiments can be obtained without inventive step according to the present embodiments.
Claims (7)
1. A skid-mounted system for purifying composite flooding oil extraction sewage; the method is characterized in that: the device comprises a circulating tank (1), wherein a photocatalyst CNPs inlet pipe (1.1), a hydrochloric acid pipe (1.2) and a sewage pipe (1.3) are connected above the circulating tank (1), a circulating pipe (1.4) is arranged on the side wall of the circulating tank (1), and the other end of the circulating pipe (1.4) is communicated with the upper part of the circulating tank (1); a sewage pump (2) and a photocatalytic pipe (3) are sequentially arranged on the circulating pipe (1.4); the sewage pump (2) is communicated with the top of the magnetic nano stirring tank (4) through a pipeline, a hydrochloric acid feeding pipe (4.1) and a water purifying agent ANPs feeding pipe (4.2) are connected to the upper portion of the magnetic nano stirring tank (4), a second sewage pump (5) and a tubular magnetic separator (6) are sequentially connected to the lower portion of the magnetic nano stirring tank (4) through pipelines, and the tubular magnetic separator (6) is respectively connected with a clean water tank (7) and a recovery tank (8) through pipelines; retrieve jar (8) top and be connected with lye pipe (8.1), retrieve jar (8) one side and have sludge tank (9) through the pipe connection, retrieve jar (8) below and be provided with water purifying agent CNPs back flow (8.2), water purifying agent CNPs back flow (8.2) and water purifying agent ANPs inlet pipe (4.2) intercommunication.
2. The skid-mounted system for purifying composite flooding sewage according to claim 1; the method is characterized in that: the circulating tank (1) is provided with a concentration and liquid level detector (1.5), and the photocatalyst (C) NPs inlet pipe (1.1), the hydrochloric acid pipe (1.2) and the sewage pipe (1.3) are respectively provided with a control valve (10).
3. The skid-mounted system for purifying composite flooding sewage according to claim 1; the method is characterized in that: a sewage valve (11) is arranged on the circulating pipe (1.4) between the circulating tank (1) and the sewage pump (2); and a high-pressure mercury lamp (3.1) and an electromagnet (3.2) are respectively arranged on two sides of the photocatalytic tube (3).
4. The skid-mounted system for purifying composite flooding sewage according to claim 1; the method is characterized in that: a control valve (10) is arranged on a pipeline between the sewage pump (2) and the photocatalytic pipe (3); a control valve (10) is arranged on a pipeline between the sewage pump (2) and the magnetic nano stirring tank (4).
5. The skid-mounted system for purifying composite flooding sewage according to claim 1; the method is characterized in that: the hydrochloric acid feed pipe (4.1), the water purifying agent ANPs feed pipe (4.2), the alkaline liquor pipe (8.1) and the water purifying agent CNPs return pipe (8.2) are all provided with control valves (10).
6. The skid-mounted system for purifying composite flooding sewage according to claim 1; the method is characterized in that: and control valves (10) are respectively connected to pipelines connected with the tubular magnetic separator (6), the second sewage pump (5), the clean water tank (7) and the recovery tank (8).
7. The skid-mounted system for purifying composite flooding sewage according to claim 1; the method is characterized in that: a pH/conductivity detector (8.3) is arranged on one side of the recovery tank (8); the pipeline of the recovery tank (8) and the sludge tank (9) is connected with a control valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921370265.5U CN210974290U (en) | 2019-08-22 | 2019-08-22 | Skid-mounted system for purifying composite flooding oil extraction sewage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921370265.5U CN210974290U (en) | 2019-08-22 | 2019-08-22 | Skid-mounted system for purifying composite flooding oil extraction sewage |
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| Publication Number | Publication Date |
|---|---|
| CN210974290U true CN210974290U (en) | 2020-07-10 |
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| CN201921370265.5U Expired - Fee Related CN210974290U (en) | 2019-08-22 | 2019-08-22 | Skid-mounted system for purifying composite flooding oil extraction sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116422685A (en) * | 2021-12-31 | 2023-07-14 | 中国石油天然气集团有限公司 | Method and device for out-of-situ restoration of oil-contaminated sites |
-
2019
- 2019-08-22 CN CN201921370265.5U patent/CN210974290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116422685A (en) * | 2021-12-31 | 2023-07-14 | 中国石油天然气集团有限公司 | Method and device for out-of-situ restoration of oil-contaminated sites |
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