CN210885544U

CN210885544U - Oil field wastewater pretreatment device

Info

Publication number: CN210885544U
Application number: CN201921042096.2U
Authority: CN
Inventors: 薛磊
Original assignee: Xi'an Luda Environmental Protection Technology Co ltd
Current assignee: Xi'an Luda Environmental Protection Technology Co ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-06-30
Anticipated expiration: 2029-07-04

Abstract

The utility model relates to an oil field wastewater pretreatment device, which relates to the technical field of sewage treatment, and comprises a treatment tank, wherein the treatment tank is internally divided into a sand settling area, an overflow area and an oil storage area by a clapboard, the overflow area and the upper end of the oil storage area are provided with overflow components for communication, the overflow area and the sand settling area are provided with conveying and shunting components for communication, the overflow area is provided with an external wastewater collecting pipe for communicating, the sand settling area is provided with an output pipe for preliminary oil-water separation of wastewater, upper floating oil is introduced into the oil storage area from the overflow components, after one end time, the wastewater is conveyed to the sand settling area from the bottom end of the overflow area through the conveying and shunting components, the wastewater is filtered through the sand settling area and then conveyed to the fine treatment section of the next section from the output pipe, the whole device has compact structure, completes preliminary oil-water separation and filtration, and is convenient for, the wastewater pretreatment effect is good.

Description

Oil field wastewater pretreatment device

Technical Field

The utility model belongs to the technical field of the sewage treatment technique and specifically relates to an oil field wastewater pretreatment device is related to.

Background

China has wide oil field distribution and spreads all over northeast, northeast China, southwest, China and southeast coastal areas. At present, most oil fields enter the middle and later stages of oil exploitation, the water content of the extracted crude oil reaches 70-80%, some oil fields even reach 90%, a large amount of oily sewage is generated after oil-water separation, and if the oily sewage is directly discharged without being treated, the oily sewage can not only cause pollution of soil and water sources, but also sometimes even cause the ignition accident of dirty oil, threaten the life safety of people, cause the economic loss of the country, and simultaneously can also harm the benefits of the oil fields.

The yeast oilfield wastewater pretreatment device disclosed in the Chinese patent with the publication number of CN201148387Y sequentially comprises an oil removal tank, a sedimentation tank and a yeast reaction tank, wherein the upper part of the oil removal tank is provided with an inlet, the lower part of the oil removal tank is communicated with the sedimentation tank, and the upper part of the sedimentation tank is communicated with the lower part of the yeast reaction tank; the bottoms of the oil removal tank and the sedimentation tank are provided with sludge discharge pipes; the bottom of the yeast reaction tank is provided with an aeration head; the oil removal tank and the sedimentation tank are of an integrated structure and are separated by a partition plate. The utility model discloses the structure is through biological, physical chemistry effect, combines two kinds of techniques organic, makes well drilling waste water obtain further processing.

However, the above-described technique has the following drawbacks: it sets up a plurality of processing ponds such as deoiling pond, sedimentation tank, yeast reaction tank, and oil field sewage pretreatment carries out preliminary treatment to sewage usually and is convenient for follow-up meticulous processing, and above-mentioned technical scheme step is too much, and area is too big.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an oil field pretreatment of waste water device has compact structure, the effectual advantage of sewage pretreatment.

The above object of the present invention can be achieved by the following technical solutions: the utility model provides an oil field pretreatment of water device that gives up, includes the treatment trough, adopt the baffle to separate for heavy sand district, overflow district and oil storage area in the treatment trough, the overflow district with the oil storage area upper end is equipped with overflow subassembly intercommunication, the overflow district with it carries reposition of redundant personnel subassembly intercommunication to be equipped with between the heavy sand district, be equipped with the external waste water collecting pipe of intercommunication in the overflow district, be equipped with the output tube on the heavy sand district.

Implement above-mentioned technical scheme, sewage lets in the treatment trough via the waste water collecting pipe, let in the overflow district promptly, the overflow district carries out preliminary water oil separating to waste water, let in the oil storage area with upper oil slick from the overflow subassembly, a terminal time back, waste water is carried to the heavy sand district via carrying the reposition of redundant personnel subassembly from the overflow district bottom, waste water filters via the heavy sand district, carry the fine treatment section to next section from the output tube afterwards, whole device compact structure accomplishes preliminary water oil separating, filter, waste water pretreatment is effectual.

The utility model discloses further set up to: the overflow subassembly includes the ascending overflow pipe of opening that overflow district upper end was equipped with, overflow district middle part is equipped with the transfer groove that is "concave" shape, the protruding with the overflow pipe of transfer groove one end is connected, and the other end is protruding to let in the oil storage area through the pipeline, overflow pipe mouth department covers and is equipped with the filter screen.

Implement above-mentioned technical scheme, set up the transfer groove of "concave" shape, the oil slick gets into the overflow pipe and gets into the transfer groove, and the water that mix with in the oil slick is collected together in transfer tank bottom portion, reduces waste water and gets into the oil storage area, sets up the filter screen and reduces the residue and get into the overflow pipe, simple and practical.

The utility model discloses further set up to: a liquid discharge pipe leading to the outside of the treatment tank is arranged at the bottom of the transfer tank, and a window is arranged on the side wall of the treatment tank at the position of the transfer tank.

Implement above-mentioned technical scheme, set up the window and be convenient for observe the waste water height that stores up in the transfer groove, set up the fluid-discharge tube simultaneously and be convenient for discharge waste water.

The utility model discloses further set up to: and a porous sand settling filter box is arranged in the middle of the sand settling area, and coarse sand is filled in the sand settling filter box.

By implementing the technical scheme, the sand-settling filter box is filled with the coarse sand, so that the residue in the wastewater can be filtered, and the method is simple and reliable.

The utility model discloses further set up to: the bottom end of the sand-settling filter box is clamped with the sand-settling area, and a hoisting ring is arranged on the sand-settling filter box.

Implement above-mentioned technical scheme, set up the hoisting ring and be convenient for hoist the sand setting filter box of joint, be convenient for change the brown sand.

The utility model discloses further set up to: carry the reposition of redundant personnel subassembly including locating the delivery pump of overflow district bottom, delivery pump output end is equipped with lets in the person in charge in sand setting district, be responsible for upwards to let in sand setting district, be equipped with a plurality of shunt tubes in the sand setting district upper end, the shunt tubes orientation the setting of sand setting filter box, the shunt tubes with be responsible for the intercommunication.

Implement above-mentioned technical scheme, after the spill is got rid of to the overflow district, open the delivery pump, be responsible for the less waste water suction of oiliness with the overflow district bottom, waste water gets into the shunt tubes by being responsible for, and the shunt tubes is even with spraying of waste water to the sediment filter box, filters afterwards.

The utility model discloses further set up to: the bottom of the overflow area is provided with a stirring paddle, the side wall of the treatment tank is provided with a driving motor, and an output shaft of the driving motor is connected with the stirring paddle.

Implement above-mentioned technical scheme, set up driving motor and stirring rake, the convenience is opened when carrying waste water, and the stirring rake makes the waste water and the residue stirring of overflow district bottom even, makes things convenient for the delivery pump to carry, reduces the residue deposit.

The utility model discloses further set up to: the tail end of the flow dividing pipe is provided with a plurality of flow guide grooves, and the flow guide grooves are inclined towards the sand settling filter box.

Implement above-mentioned technical scheme, set up the guiding gutter, be convenient for when the shunt tubes shunts with waste water along the guiding gutter water conservancy diversion, make things convenient for waste water evenly distributed in desilting filter box.

To sum up, the utility model discloses a beneficial technological effect does:

1. the utility model discloses an oil field wastewater pretreatment device, including the treatment tank, adopt the baffle to separate for the desilting district in the treatment tank, overflow district and oil storage area upper end are equipped with overflow subassembly intercommunication, overflow district and the desilting interval are equipped with and carry reposition of redundant personnel subassembly intercommunication, be equipped with the external waste water collecting pipe of intercommunication on the overflow district, be equipped with the output tube on the desilting district, its overflow district carries out preliminary oil-water separation to waste water, let upper floating oil into the oil storage area from the overflow subassembly, one end time later, waste water is carried to the desilting district via carrying reposition of redundant personnel subassembly from overflow district bottom, waste water filters via the desilting district, carry the meticulous processing section to next section from the output tube afterwards, whole device compact structure, accomplish preliminary oil-water separation, filter, be convenient for the butt joint of follow-up workshop section, waste water pretreatment;

2. the concave transfer groove is arranged, the floating oil enters the overflow pipe and enters the transfer groove, water mixed with the floating oil is accumulated at the bottom of the transfer groove, the waste water entering an oil storage area is reduced, and the filter screen is arranged to reduce residues entering the overflow pipe, so that the device is simple and practical;

3. set up driving motor and stirring rake, the convenience is opened when carrying waste water, and the stirring rake makes the waste water and the residue stirring of overflow district bottom even, makes things convenient for the conveying pump to carry, reduces the residue deposit.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a treatment tank; 2. a partition plate; 3. a sand settling area; 4. an overflow area; 5. an oil storage region; 6. an overflow assembly; 7. a delivery diverter assembly; 8. a waste water collecting pipe; 9. an output pipe; 10. an overflow pipe; 11. a transit trough; 12. filtering with a screen; 13. a liquid discharge pipe; 14. a window; 15. a sand settling filter box; 16. hoisting a ring; 17. a delivery pump; 18. a main pipe; 19. a shunt tube; 20. a diversion trench; 21. a stirring paddle; 22. the motor is driven.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses an oil field wastewater pretreatment device, including a treatment tank 1, the treatment tank 1 is divided into a sand settling area 3, an overflow area 4 and an oil storage area 5 by a baffle 2, the upper ends of the overflow area 4 and the oil storage area 5 are provided with an overflow component 6 for communication, a conveying and shunting component 7 for communication is arranged between the overflow area 4 and the sand settling area 3, the overflow area 4 is provided with a wastewater collecting pipe 8 for communicating with the outside, the sand settling area 3 is provided with an output pipe 9, sewage is introduced into the treatment tank 1 through the wastewater collecting pipe 8, namely, the sewage is introduced into the overflow area 4, the overflow area 4 carries out preliminary oil-water separation on the wastewater, upper layer floating oil is introduced into the oil storage area 5 from the overflow component 6, after one end of time, the wastewater is conveyed to the sand settling area 3 through the conveying and shunting component 7 from the bottom end of the overflow area 4, the wastewater is filtered through the sand, whole device compact structure accomplishes preliminary oil water separation, filters, and pretreatment of waste water is effectual.

Referring to fig. 1, in the present embodiment, oil-water separation is required for wastewater pretreatment, in which an overflow mode is adopted to primarily separate oil and water, an overflow assembly 6 includes an overflow pipe 10 having an upward opening at the upper end of an overflow area 4, a concave transfer tank 11 is disposed in the middle of the overflow area 4, a protrusion at one end of the transfer tank 11 is connected to the overflow pipe 10, a protrusion at the other end is introduced into an oil storage area 5 through a pipeline, a filter screen 12 is covered at a pipe orifice of the overflow pipe 10, a drain pipe 13 leading to the outside of a treatment tank 1 is disposed at the bottom of the transfer tank 11, a window 14 is disposed at the side wall of the treatment tank 1 at the transfer tank 11, the concave transfer tank 11 is disposed, floating oil enters the overflow pipe 10 and enters the transfer tank 11, water mixed with the floating oil accumulates at the bottom of the transfer tank 11, the window 14 facilitates observation of the height of wastewater accumulated in the transfer tank 11, the drain pipe 13 is, the filter screen 12 is arranged to reduce the residue from entering the overflow pipe 10, and is simple and practical.

After the preliminary oil removal is completed, the wastewater needs to be conveyed to a sand settling area 3 for filtration and residue removal, referring to fig. 1, a porous sand settling filter box 15 is arranged in the middle of the sand settling area 3, coarse sand (not shown in the coarse sand figure) is filled in the sand settling filter box 15, the bottom end of the sand settling filter box 15 is clamped with the sand settling area 3, a hoisting ring 16 is arranged on the sand settling filter box 15, a conveying flow distribution assembly 7 comprises a conveying pump 17 arranged at the bottom of an overflow area 4, a main pipe 18 leading into the sand settling area 3 is arranged at the output end of the conveying pump 17, the main pipe 18 leads upwards into the sand settling area 3, a plurality of flow distribution pipes 19 are arranged at the upper end of the sand settling area 3, the flow distribution pipes 19 are arranged towards the sand settling filter box 15 and communicated with the main pipe 18, after the overflow area 4 overflows to remove floating oil, the conveying pump 17 is started to pump the wastewater with less oil at the bottom of the overflow area 4 into the main pipe 18, the flow distribution pipes 19 are pumped into the flow, the sand settling filter box 15 is filled with the coarse sand, residues in the wastewater can be filtered, and the hoisting ring 16 is convenient for hoisting the clamped sand settling filter box 15 and replacing the coarse sand to discharge the residues.

Referring to fig. 1, specifically, in order to make waste water evenly distributed, shunt tubes 19 end is equipped with a plurality of guiding gutters 20, guiding gutters 20 slope and set up towards desilting filter box 15, guiding gutters 20 are convenient for carry out the water conservancy diversion with waste water along guiding gutters 20 when shunt tubes 19 shunt, make things convenient for waste water evenly distributed in desilting filter box 15, in order to avoid referring to at overflow district 4 deposit, overflow district 4 bottom is equipped with stirring rake 21, treatment trough 1 lateral wall is equipped with driving motor 22, driving motor 22 output shaft is connected with stirring rake 21, conveniently open driving motor 22 when carrying waste water, stirring rake 21 makes waste water and the residue stirring of overflow district 4 bottom even, make things convenient for delivery pump 17 to carry, reduce the residue deposit.

Working process (principle): the utility model discloses an oil field wastewater pretreatment device, which comprises a treatment tank 1, the treatment tank 1 is internally divided into a sand settling area 3, an overflow area 4 and an oil storage area 5 by a clapboard 2, the upper ends of the overflow area 4 and the oil storage area 5 are provided with an overflow component 6 for communication, a conveying shunt component 7 for communication is arranged between the overflow area 4 and the sand settling area 3, the overflow area 4 is provided with a wastewater collecting pipe 8 for communicating with the outside, the sand settling area 3 is provided with an output pipe 9, the overflow area 4 carries out preliminary oil-water separation on wastewater, upper floating oil is introduced into the oil storage area 5 from the overflow component 6, after one end time, the wastewater is conveyed to the sand settling area 3 from the bottom end of the overflow area 4 through the conveying shunt component 7, the wastewater is filtered through the sand settling area 3 and then conveyed to the next section of fine treatment section from the output pipe 9, the whole device has compact structure, preliminary oil-water separation and filtration are completed, the wastewater pretreatment effect is good.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an oil field pretreatment of water device that gives up which characterized in that: including treatment tank (1), adopt baffle (2) to separate for heavy husky district (3), overflow district (4) and oil storage district (5) in treatment tank (1), overflow district (4) with oil storage district (5) upper end is equipped with overflow subassembly (6) intercommunication, overflow district (4) with be equipped with between heavy husky district (3) and carry reposition of redundant personnel subassembly (7) intercommunication, be equipped with on overflow district (4) and communicate external waste water collecting pipe (8), be equipped with output tube (9) on heavy husky district (3).

2. The oilfield wastewater pretreatment device of claim 1, wherein: overflow subassembly (6) include ascending overflow pipe of opening (10) that overflow district (4) upper end was equipped with, overflow district (4) middle part is equipped with transfer tank (11) that are "concave" shape, transfer tank (11) one end arch with overflow pipe (10) are connected, and the other end arch lets in oil storage district (5) through the pipeline, overflow pipe (10) mouth of pipe department covers and is equipped with filter screen (12).

3. The oilfield wastewater pretreatment device of claim 2, wherein: a liquid discharge pipe (13) leading to the outside of the treatment tank (1) is arranged at the bottom of the transit tank (11), and a window (14) is arranged on the side wall of the treatment tank (1) at the position of the transit tank (11).

4. The oilfield wastewater pretreatment device of claim 3, wherein: the middle part of the sand settling area (3) is provided with a porous sand settling filter box (15), and the sand settling filter box (15) is filled with coarse sand.

5. The oilfield wastewater pretreatment device of claim 4, wherein: the bottom end of the sand settling filter box (15) is connected with the sand settling area (3) in a clamping mode, and a hoisting ring (16) is arranged on the sand settling filter box (15).

6. The oilfield wastewater pretreatment device of claim 5, wherein: carry reposition of redundant personnel subassembly (7) including locating delivery pump (17) of overflow district (4) bottom, delivery pump (17) output is equipped with lets in the person in charge (18) in desilting district (3), it upwards lets in to be responsible for (18) desilting district (3), be equipped with a plurality of shunt tubes (19) in desilting district (3) upper end, shunt tubes (19) orientation desilting filter box (15) set up, shunt tubes (19) with be responsible for (18) intercommunication.

7. The oilfield wastewater pretreatment device of claim 6, wherein: overflow district (4) bottom is equipped with stirring rake (21), treatment trough (1) lateral wall is equipped with driving motor (22), driving motor (22) output shaft with stirring rake (21) are connected.

8. The oilfield wastewater pretreatment device of claim 7, wherein: the tail end of the shunt pipe (19) is provided with a plurality of diversion trenches (20), and the diversion trenches (20) are obliquely arranged towards the sand settling filter box (15).