CN216038965U - Treatment device for oil and gas field produced wastewater - Google Patents

Abstract

The utility model relates to the technical field of wastewater treatment equipment, in particular to a treatment device for wastewater produced in an oil and gas field, which comprises a wastewater treatment tank, wherein the interior of the wastewater treatment tank is divided into a wastewater treatment tank, an oil stain adsorption tank and a water storage tank which are mutually independent through a partition plate, a partition plate and a floating overflow plate are arranged in the wastewater treatment tank, the wastewater treatment tank is divided into a settling zone, a flocculation zone and an oil collection zone from bottom to top by the partition plate and the floating overflow plate, an overflow port communicated with the water storage tank and the flocculation zone is arranged on the partition plate in the wastewater treatment tank, an oil overflow port communicated with the oil stain adsorption tank and the oil collection zone is also arranged on the partition plate, and the floating overflow plate floats in the wastewater treatment tank between the overflow port and the oil overflow port. The utility model improves the efficiency of treating the wastewater produced by the oil-gas field, realizes the quick separation of oil, water, impurities and gas, and has convenient and quick operation.

Description

Treatment device for oil and gas field produced wastewater

Technical Field

The utility model relates to the technical field of wastewater treatment equipment, in particular to a treatment device for wastewater produced in an oil and gas field.

Background

Can be along with the production of a large amount of production waste water in the oil gas field development process, at present to the processing of oil gas field production waste water, usually to the waste water after the crude oil initial separation, still contain partial crude oil in the waste water, the oil gas field production waste water of this moment if direct discharge will cause the pollution of different degrees to the environment.

At present, the treatment mode aiming at the waste water produced by an oil and gas field is usually air floatation, flocculation sedimentation, filtration, biochemical method and the like, the air floatation has obvious effect of removing floating oil and dispersed oil in the waste water, but has poor effect of removing suspended matters, and the air floatation has more mechanical parts and large equipment maintenance amount; the flocculation sedimentation method needs to add a large amount of chemical agents such as flocculating agent, coagulant aid and the like, and a large amount of oily sludge is generated in the sewage treatment process, which is a relatively troublesome problem encountered in the current oil field; the filtering method belongs to a fine treatment process, the filter has higher requirement on incoming water, pretreatment facilities such as air floatation or flocculation sedimentation and the like are usually arranged at the front end of the filter, and the walnut shell filter, the fiber ball filter, the quartz sand filter and the like used for treating the oil-containing wastewater of the oil field at present have the problems of frequent filter material replacement, time consumption and labor consumption; the biochemical method is less applied in the field of oil field wastewater treatment, and the main reason is that the microbial strains are difficult to adapt to the complex water quality and low-temperature environment of the oil field wastewater, and the treatment effect is unstable.

The methods are all applied to the field of oily sewage treatment of oil and gas fields, but impurities, oil, water and gas in the wastewater cannot be effectively and quickly separated during treatment, so that the wastewater treatment equipment is complex and the operation difficulty is greatly increased.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the embodiment of the utility model aims to provide a treatment device for wastewater produced by an oil and gas field, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a processing apparatus for oil gas field produces waste water, includes the waste water treatment case, the waste water treatment incasement portion is separated for mutually independent waste water treatment groove, greasy dirt adsorption tank and aqua storage tank through the baffle, waste water treatment inslot internally mounted has interval orifice plate and unsteady overflow board, interval orifice plate and unsteady overflow board will the waste water treatment groove is separated for sedimentation zone, flocculation district and oil collection district from bottom to top, be equipped with the overflow mouth of intercommunication aqua storage tank and flocculation district on the baffle in the waste water treatment incasement, still be equipped with the oil spilling mouth of intercommunication greasy dirt adsorption tank and oil collection district on the baffle, unsteady overflow board float in the waste water treatment inslot between overflow mouth and the oil spilling mouth.

As a further scheme of the utility model, the top of the wastewater treatment tank is connected with a sealed tank cover, and a tail gas discharge pipe communicated with the interior of the wastewater treatment tank is mounted on the sealed tank cover and is used for collecting oil gas generated in the wastewater treatment tank.

Further, install the greasy dirt pipe on the waste water treatment case, greasy dirt union coupling delivery pump, the mouth of pipe of greasy dirt pipe is located in the waste water treatment inslot of interval orifice plate below, the greasy dirt pipe with the settling zone intercommunication for the waste water that produces when extracting the oil gas field passes through in delivery pump and the settling zone of greasy dirt pipe direct pump sending to waste water treatment case.

Furthermore, the interval orifice plate is fixed between the baffle of waste water treatment case, the interval orifice plate is located the overflow board below floats, be equipped with the vortex hole of a plurality of intercommunication sedimentation districts and flocculation district on the interval orifice plate for carry the flocculation district to the waste water that produces when flowing into oil and gas field extraction in the sedimentation district in.

As a further scheme of the utility model, a stirrer is arranged in the flocculation area, the stirrer comprises a rotating shaft and a plurality of centrifugal blades arranged on the rotating shaft, and the rotating shaft penetrates through the floating overflow plate and the through hole on the sealing box cover and then is connected with a driving device.

Further, still the intercommunication has the flocculating agent to add the pipe in the flocculation district, and the flocculating agent adds union coupling flocculating agent and adds the case for add the flocculating agent to the flocculation district in, and with the waste water intensive mixing in the flocculation district under the stirring of agitator, separate out the impurity in the waste water and under the centrifugal blade stirring, make the impurity of flocculation deposit to the settling zone in along the vortex hole, the interval orifice plate effectively avoids the rotatory disturbance to the deposit in the settling zone of agitator, the rotation of agitator also is favorable to the impurity of depositing on the interval orifice plate to fall into in the vortex hole.

Furthermore, a lifting chute used for floating and limiting the floating overflow plate is arranged between the partition plates in the wastewater treatment box, one end of the floating overflow plate is provided with an overflow baffle used for plugging the overflow port, a touch switch is installed on the partition plate at the top of the lifting chute and connected with a driving circuit of the delivery pump, when the floating overflow plate is separated from the touch switch, the height of the liquid level used for driving the floating overflow plate to float in the wastewater treatment tank is reduced, at the moment, the overflow baffle plugs the overflow port, oil is prevented from flowing into the water storage tank from the overflow port, the delivery pump is driven to accelerate the pumping of the oil pipe to the wastewater treatment tank to extract the wastewater, when the water level rises, the floating overflow plate floats and touches the touch switch, so that the floating overflow plate is maintained at the top position of the lifting chute, at the moment, the wastewater in a flocculation area conveniently enters the water storage tank from the overflow port, and oil stains in the oil collecting area can conveniently enter the oil stain adsorption tank from the oil spilling port, so that oil-water separation is realized.

Furthermore, a sludge discharge pipe is further installed in the settling zone and connected with a sludge discharge pump for periodically pumping out impurities settled in the settling zone.

Furthermore, a plurality of oil guide holes are distributed on the floating overflow plate and are used for communicating the flocculation area and the oil collecting area, and wastewater and oil stains are separated through the floating overflow plate floating on the water surface.

Furthermore, the oil overflow port is positioned on a partition board at the bottom side of the oil collecting area, the spacing distance between the oil overflow port and the overflow port is equal to the thickness of the floating overflow plate, when the floating overflow plate floats to the top of the lifting chute, the overflow port is positioned on the partition board at the bottom side of the floating overflow plate, at the moment, the floating overflow plate and the overflow baffle do not block the overflow port, so that wastewater in the flocculation area can conveniently enter the water storage tank, and oil stains in the oil collecting area can conveniently enter the oil stain adsorption tank.

Further, overflow baffle follows overflow mouth place baffle plane sets up, just overflow baffle fixes in the overflow board top of floating, be equipped with in the overflow mouth place baffle the groove of accomodating that overflow baffle put into, float the overflow board with during the touch switch separation, overflow baffle is right the overflow mouth blocks, effectively prevents to be located the greasy dirt of overflow board top of floating gets into the aqua storage tank along the overflow mouth.

In summary, compared with the prior art, the embodiment of the utility model has the following beneficial effects:

according to the treatment device for the oil and gas field produced wastewater, the oil and water separation is performed on the oil and gas field produced wastewater by adopting the fully-closed wastewater treatment box, the waste gas is collected, the oil and gas field produced wastewater treatment efficiency is improved, the oil, water and sediments are separated by utilizing the floating overflow plate and the spacing orifice plate, the rapid separation is realized during the oil and gas field produced wastewater treatment, and the operation is convenient and rapid.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural view of a treatment apparatus for wastewater produced from an oil and gas field according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic structural view of a place a of the treatment device for wastewater produced from an oil and gas field of fig. 1 according to one embodiment of the present invention.

Fig. 3 is an enlarged schematic structural view at B of the treatment device for wastewater produced from an oil and gas field of fig. 1 according to one embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the treatment device for the oil-gas field produced wastewater, according to one embodiment of the utility model, during oil-water separation.

Reference numerals: 1-a wastewater treatment tank, 2-a sealed tank cover, 3-a partition plate, 4-a wastewater treatment tank, 5-an oil stain adsorption tank, 6-a water storage tank, 7-a partition orifice plate, 8-a turbulent flow hole, 9-a floating overflow plate, 10-an oil guide hole, 11-a settling zone, 12-a flocculation zone, 13-an oil collection zone, 14-a stirrer, 15-a centrifugal blade, 16-a rotating shaft, 17-a driving device, 18-a flocculant adding pipe, 19-a flocculant adding tank, 20-an overflow port, 21-an overflow baffle, 22-an oil overflow port, 23-a touch switch, 24-a delivery pump, 25-an oil stain pipe, 26-a sludge discharge pipe and 27-a tail gas discharge pipe.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 4, one embodiment of the present invention provides a treatment apparatus for wastewater produced from an oil and gas field, including a wastewater treatment tank 1. The top of the wastewater treatment box 1 is connected with a sealed box cover 2, and a tail gas discharge pipe 27 communicated with the inside of the wastewater treatment box 1 is arranged on the sealed box cover 2 and used for collecting oil gas generated in the wastewater treatment box 1. Through the totally enclosed structure, when handling oil gas field and producing waste water, can collect so that further processing to gas such as mingled oil gas.

Waste water treatment case 1 is inside through baffle 3 separate for mutually independent waste water treatment tank 4, greasy dirt adsorption tank 5 and aqua storage tank 6, 4 internally mounted in waste water treatment tank have interval orifice plate 7 and unsteady overflow plate 9, interval orifice plate 7 and unsteady overflow plate 9 will waste water treatment tank 4 separates for settling zone 11, flocculation zone 12 and the oil catch basin 13 from bottom to top. Referring to fig. 1 and 2, an overflow port 20 communicating a water storage tank 6 and a flocculation area 12 is provided on a partition plate 3 in the wastewater treatment tank 1, referring to fig. 1 and 3, an oil overflow port 22 communicating an oil stain adsorption tank 5 and an oil collection area 13 is further provided on the partition plate 3, and the floating overflow plate 9 floats in the wastewater treatment tank 4 between the overflow port 20 and the oil overflow port 22.

In this embodiment, through baffle 3, interval orifice plate 7 and the overflow board 9 that floats with dividing wastewater treatment case 1 inside into wastewater treatment tank 4, greasy dirt adsorption tank 5 and aqua storage tank 6 to and be located sedimentation zone 11, flocculation area 12 and the oil collecting area 13 in wastewater treatment tank 4, every region all corresponds different waste water storage. When letting in oil gas field exploitation waste water, install greasy dirt pipe 25 on waste water treatment case 1, delivery pump 24 is connected to greasy dirt pipe 25, the mouth of pipe of greasy dirt pipe 25 is located in the waste water treatment tank 4 of interval orifice plate 7 below, greasy dirt pipe 25 with settling zone 11 intercommunication for the waste water that produces when exploiting the oil gas field passes through delivery pump 24 and greasy dirt pipe 25 direct pump send to waste water treatment case 1 in settling zone 11. Directly let in the extraction waste water in the settling zone 11, be favorable to the large granule impurity very first time in the waste water to, waste water flows from bottom to top in waste water treatment tank 4, makes things convenient for the greasy dirt very first time to emerge, and waste water also can filter large granule impurity through interval orifice plate 7 and unsteady overflow plate 9 when flowing from bottom to top, improves impurity separation's in the waste water efficiency.

In this embodiment, interval orifice plate 7 is fixed between the baffle 3 of waste water treatment case 1, interval orifice plate 7 is located the overflow board 9 below floats, be equipped with the vortex hole 8 of a plurality of intercommunication settling zones 11 and flocculation district 12 on the interval orifice plate 7 for waste water that produces when will flow into the oil and gas field production in settling zone 11 is carried to flocculation district 12 in.

It should be noted that, in an embodiment of the present invention, an agitator 14 is installed in the flocculation area 12, the agitator 14 includes a rotating shaft 16 and a plurality of centrifugal blades 15 installed on the rotating shaft 16, and the rotating shaft 16 is connected to a driving device 17 after passing through the through holes on the floating overflow plate 9 and the sealing cover 2.

Still communicate in the flocculation district 12 and have flocculating agent to add pipe 18, flocculating agent adds pipe 18 and connects flocculating agent and adds case 19, be used for adding the flocculating agent to flocculation district 12 in, and under the stirring of agitator 14 with the waste water intensive mixing in the flocculation district 12, separate out the impurity in the waste water and under the stirring of centrifugal blade 15, make the impurity of flocculation deposit to the settling zone 11 in along vortex hole 8, interval orifice plate 7 effectively avoids the disturbance of the rotation of agitator 14 to the deposit in the settling zone 11, the rotation of agitator 14 is also favorable to depositing in the impurity of interval orifice plate 7 falls into in the vortex hole 8.

When the wastewater in the flocculation zone 12 is treated, a flocculating agent is introduced and stirred to be beneficial to separating out impurities and precipitating the impurities into the precipitation zone 11 along the turbulent flow holes 8.

In this embodiment, a lifting chute for limiting the floating of the floating overflow plate 9 is disposed between the partition plates 3 in the wastewater treatment tank 1, an overflow baffle 21 for blocking the overflow port 20 is disposed at one end of the floating overflow plate 9, a touch switch 23 is mounted on the partition plate 3 at the top of the lifting chute, the touch switch 23 is connected to a driving circuit of the delivery pump 24, when the floating overflow plate 9 is separated from the touch switch 23, it indicates that the height of the liquid level in the wastewater treatment tank 4 for driving the floating of the floating overflow plate 9 is reduced, at this time, the overflow baffle 21 blocks the overflow port 20, so as to prevent the oil from flowing into the water storage tank 6 from the overflow port 20, and drive the delivery pump 24 to accelerate the pumping of the wastewater from the wastewater treatment tank 4 by the oil pipe 25, when the floating water level rises, the floating overflow plate 9 rises and touches the touch switch 23, so as to maintain the floating overflow plate 9 at the top of the lifting chute, at this time, the wastewater in the flocculation area 12 can conveniently enter the water storage tank 6 from the overflow port 20, and the oil stain in the oil collection area 13 can conveniently enter the oil stain adsorption tank 5 from the oil overflow port 22, so that oil-water separation is realized.

It needs to be particularly said that a plurality of oil guiding holes 10 are distributed on the floating overflow plate 9, the oil guiding holes 10 are used for communicating the flocculation area 12 with the oil collecting area 13, and the wastewater and the oil stains are separated by the floating overflow plate 9 floating on the water surface.

The oil overflow port 22 is located on the partition plate 3 at the bottom side of the oil collecting area 13, the interval distance between the oil overflow port 22 and the overflow port 20 is equal to the thickness of the floating overflow plate 9, when the floating overflow plate 9 floats to the top of the lifting chute, the overflow port 20 is located on the partition plate 3 at the bottom side of the floating overflow plate 9, at the moment, the floating overflow plate 9 and the overflow baffle 21 do not block the overflow port 20, wastewater in the flocculation area 12 conveniently enters the water storage tank 6, and oil stains in the oil collecting area 13 enter the oil stain adsorption tank 5.

Overflow baffle 21 is followed 3 plane settings at overflow mouth 20 place baffle, just overflow baffle 21 is fixed in the overflow board 9 top that floats, be equipped with in overflow mouth 20 place baffle 3 overflow baffle 21 puts into accomodate the groove, float overflow board 9 with during the touch switch 23 separation, overflow baffle 21 is right overflow mouth 20 blocks, effectively prevents to be located the greasy dirt of the overflow board 9 top of floating gets into aqua storage tank 6 along overflow mouth 20.

Through setting up overflow mouth 20 and oil spilling mouth 22 the both sides of floating overflow plate 9 when floating to lift spout top, conveniently make waste water and the greasy dirt of 9 both sides of overflow plate float flow into corresponding aqua storage tank 6 and greasy dirt adsorption tank 5 along overflow mouth 20 and oil spilling mouth 22 respectively in, make profit quickly separating, when the liquid level reduces, also can control the volume of 24 pump sending waste water of delivery pump through touch switch 23, in time adjust the water level in the waste water treatment tank 4, make water oil separating normally go on.

In this embodiment, a sludge discharge pipe 26 is further installed in the settling zone 11, and the sludge discharge pipe 26 is connected to a sludge discharge pump for periodically pumping out impurities settled in the settling zone 11.

In conclusion, the treatment device for the oil and gas field produced wastewater improves the efficiency of oil and gas field produced wastewater treatment by adopting the totally-enclosed wastewater treatment tank 1 to separate oil from water and collect waste gas, and separates oil, water and sediments by utilizing the floating overflow plate 9 and the spacing orifice plate 7, so that the device realizes quick separation and is convenient and quick to operate when the oil and gas field produced wastewater is treated.

The technical principle of the present invention has been described above with reference to specific embodiments, which are merely preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. Other embodiments of the utility model will occur to those skilled in the art without the exercise of inventive faculty, and such will fall within the scope of the utility model.

Claims (10)

1. The utility model provides a processing apparatus for oil gas field extraction waste water, includes waste water treatment case (1), waste water treatment case (1) is inside to be separated for mutually independent waste water treatment groove (4), greasy dirt adsorption tank (5) and aqua storage tank (6) through baffle (3), its characterized in that, waste water treatment groove (4) internally mounted has interval orifice plate (7) and overflow board (9) that floats, interval orifice plate (7) and overflow board (9) will waste water treatment groove (4) are separated for sedimentation zone (11), flocculation district (12) and oil collection district (13) from bottom to top, be equipped with overflow mouth (20) that communicate aqua storage tank (6) and flocculation district (12) on baffle (3) in waste water treatment case (1), still be equipped with intercommunication greasy dirt adsorption tank (5) and oil collection district (13) oil mouth (22) on baffle (3), the floating overflow plate (9) floats in the wastewater treatment tank (4) between the overflow port (20) and the oil overflow port (22).

2. The device for treating the oil and gas field produced wastewater according to claim 1, wherein a sealed box cover (2) is connected to the top of the wastewater treatment box (1), and a tail gas discharge pipe (27) communicated with the inside of the wastewater treatment box (1) is installed on the sealed box cover (2).

3. The device for treating the oil and gas field produced wastewater according to claim 2, wherein an oil stain pipe (25) is installed on the wastewater treatment tank (1), the oil stain pipe (25) is connected with a delivery pump (24), the orifice of the oil stain pipe (25) is positioned in the wastewater treatment tank (4) below the spacing pore plate (7), and the oil stain pipe (25) is communicated with the settling zone (11).

4. The device for treating the oil and gas field produced wastewater according to claim 3, wherein the spacing orifice plate (7) is fixed between the partition plates (3) of the wastewater treatment tank (1), the spacing orifice plate (7) is positioned below the floating overflow plate (9), and a plurality of flow disturbing holes (8) communicating the settling zone (11) with the flocculation zone (12) are formed in the spacing orifice plate (7).

5. The treatment device for the oil and gas field produced wastewater according to claim 1, wherein a stirrer (14) is installed in the flocculation area (12), the stirrer (14) comprises a rotating shaft (16) and a plurality of centrifugal blades (15) installed on the rotating shaft (16), and the rotating shaft (16) penetrates through holes in the floating overflow plate (9) and the sealing box cover (2) and then is connected with a driving device (17).

6. The treatment device for the oil and gas field produced wastewater according to claim 5, characterized in that a flocculant adding pipe (18) is further communicated in the flocculation zone (12), and the flocculant adding pipe (18) is connected with a flocculant adding tank (19).

7. The device for treating the oil and gas field produced wastewater according to claim 4, wherein a lifting chute for limiting floating of the floating overflow plate (9) is arranged between the partition plates (3) in the wastewater treatment tank (1), one end of the floating overflow plate (9) is provided with an overflow baffle (21) for blocking the overflow port (20), the partition plate (3) at the top of the lifting chute is provided with a touch switch (23), and the touch switch (23) is connected with a driving circuit of the delivery pump (24).

8. The device for treating the oil and gas field produced wastewater according to claim 7, wherein a plurality of oil guide holes (10) are distributed on the floating overflow plate (9), and the oil guide holes (10) are used for communicating the flocculation area (12) with the oil collection area (13).

9. The device for treating the oil and gas field produced wastewater according to claim 8, wherein the oil overflow port (22) is positioned on the partition plate (3) at the bottom side of the oil collecting area (13), and the separation distance between the oil overflow port (22) and the overflow port (20) is equal to the thickness of the floating overflow plate (9).

10. The device for treating the oil and gas field produced wastewater according to claim 9, wherein the overflow baffle (21) is arranged along the plane of the partition plate (3) where the overflow port (20) is located, the overflow baffle (21) is fixed above the floating overflow plate (9), and the storage groove for the overflow baffle (21) to be placed is formed in the partition plate (3) where the overflow port (20) is located.

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