Oilfield sewage treatment filtering device

Abstract

The utility model provides an oil field sewage treatment filter device which comprises an oil field sewage filter cartridge, the bottom end of the oil field sewage filter cartridge penetrates through a top cover of a decontamination box through a first connecting pipe to be connected, a first filter screen plate is arranged in the decontamination box, and a first hydrocyclone is arranged on one side of the bottom end of the decontamination box. A first hydrocyclone is arranged at the bottom of the dirt removal box, a first sludge pump is arranged on the side of the dirt removal box, the bottom end of the dirt removal box is communicated with the oil-water separation tank through a second connecting pipe, and a floating oil collector is arranged in the oil-water separation tank. Sludge in the decontamination box is discharged by the first sludge pump, oil dirt is separated and purified through the ultrafilter by utilizing the selective permeability of a membrane, and floating oil on the surface of oil field sewage is adsorbed and collected through a floating oil collector in the oil-water separation tank. And then the oil collected by the floating oil collector is conveyed into the oil storage tank through the oil pump to be stored.

Description

Technical Field

[0001] The utility model belongs to the technical field of oilfield sewage treatment, and in particular relates to an oilfield sewage treatment filtering device. Background Art

[0002] Oilfield wastewater treatment. The treatment processes for oily wastewater at home and abroad are basically the same, mainly divided into two stages of treatment: oil removal and filtration, and the treated wastewater is reinjected. According to the geological characteristics of the injection formation, the treatment depth standard is determined and the purification process and equipment are selected.

[0003] In the existing technology, the process of treating oilfield wastewater generated during oilfield exploitation is relatively simple, and it is impossible to separately treat the mixed floating oil, solid impurities and sewage in the oilfield wastewater, resulting in the discharge of floating oil and impurities in the water after filtration, causing pollution to the surrounding environment. Utility Model Content

[0004] The utility model aims to provide an oilfield sewage treatment and filtering device, aiming to solve the existing problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oilfield sewage treatment and filtering device, comprising an oilfield sewage filter cartridge, the bottom end of the oilfield sewage filter cartridge is connected to the top cover of a dirt removal box through a first connecting pipe, a first filter screen is arranged inside the dirt removal box, a first hydrocyclone is arranged on one side of the bottom end of the dirt removal box, a first sludge pump is arranged on the side of the dirt removal box, the bottom end of the dirt removal box is connected to an oil-water separation tank through a second connecting pipe, a floating oil collector is arranged inside the oil-water separation tank, an oil level sensor is arranged on the inner side of the oil-water separation tank, and an ultrafilter is arranged on the inner side of the oil-water separation tank.

[0006] As a preferred embodiment of the utility model, one side of the first connecting pipe and the second connecting pipe is fixedly connected with a first solenoid valve and a second solenoid valve, and a second sludge pump is arranged at the bottom end of the oil-water separation tank.

[0007] As a preferred embodiment of the utility model, one side of the floating oil collector is connected to the liquid inlet of the oil pump through a telescopic tube, and the liquid outlet of the oil pump is connected to one side of the oil storage tank through a delivery pipe.

[0008] As a preferred embodiment of the utility model, one side of the oil-water separation tank is connected to the liquid inlet of the water pump through a water pipe, the liquid outlet of the water pump is connected to the inside of the water storage tank, and a second filter screen is provided inside the oilfield sewage filter cylinder.

[0009] As a preferred embodiment of the utility model, a switch panel is provided on one side of the oilfield sewage filter cartridge, and a protective layer is provided on the surface of the switch panel.

[0010] As a preferred embodiment of the utility model, the surface of the switch panel is provided with a first hydrocyclone control switch, a first sludge pump control switch, an ultrafilter control switch, an oil float collector control switch, an oil level sensor control switch, a first solenoid valve control switch, a second solenoid valve control switch, and a second sludge pump control switch; the first hydrocyclone, the first sludge pump, the ultrafilter, the oil float collector, the oil level sensor, the first solenoid valve, the second solenoid valve, and the second sludge pump are electrically connected to an external power supply through the first hydrocyclone control switch, the first sludge pump control switch, the ultrafilter control switch, the oil float collector control switch, the oil level sensor control switch, the first solenoid valve control switch, the second solenoid valve control switch, and the second sludge pump control switch, respectively.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The solid-liquid separation of the oilfield sewage is carried out through the first hydrocyclone at the bottom of the decontamination tank, and the first sludge pump discharges the sludge inside the decontamination tank. The ultrafilter uses the selective permeability of the membrane to separate and purify the oil pollution. The floating oil collector inside the oil-water separation tank adsorbs and collects the floating oil on the surface of the oilfield sewage, and then the oil collected by the floating oil collector is transported to the oil storage tank for storage through the oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is one of the structural diagrams of the utility model;

[0016] Figure 3 This is the second structural diagram of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the first filter screen plate of the utility model.

[0018] In the figure: 1. Oilfield sewage filter cartridge; 101. First connecting pipe; 102. Decontamination tank; 1021. First filter screen; 103. First hydrocyclone; 104. First sludge pump; 105. Second connecting pipe; 106. Oil-water separation tank; 1061. Ultrafilter; 107. Floating oil collector; 108. Oil level sensor; 2. First solenoid valve; 201. Second solenoid valve; 202. Second sludge pump; 3. Telescopic pipe; 301. Oil pump; 302. Delivery pipe; 303. Oil storage tank; 4. Water pump; 401. Water storage tank; 5. Second filter screen. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides the following technical solutions: an oilfield sewage treatment filtering device comprises an oilfield sewage filter cartridge 1, the bottom end of the oilfield sewage filter cartridge 1 is connected to the top cover of a dirt removal box 102 through a first connecting pipe 101, a first filter screen plate 1021 is arranged inside the dirt removal box 102, a first hydrocyclone 103 is arranged on one side of the bottom end of the dirt removal box 102, a first sludge pump 104 is arranged on the side of the dirt removal box 102, the bottom end of the dirt removal box 102 is connected to an oil-water separation tank 106 through a second connecting pipe 105, a floating oil collector 107 is arranged inside the oil-water separation tank 106, an oil level sensor 108 is arranged on the inner side of the oil-water separation tank 106, and an ultrafilter 1061 is arranged on the inner side of the oil-water separation tank 106.

[0021] In specific use, when filtering the oilfield sewage, the oilfield sewage is first transported to the oilfield sewage filter cartridge 1, and the oilfield sewage is initially filtered through the second filter screen plate 5 inside the oilfield sewage filter cartridge 1. After filtering, the first solenoid valve 2 is opened to facilitate the oilfield sewage to reach the inside of the decontamination tank 102 along the first connecting pipe 101. After sedimentation inside the decontamination tank 102, the oilfield sewage is separated into solid and liquid by the first hydrocyclone 103 at the bottom of the decontamination tank 102, so that the first sludge pump 104 can pump the oilfield sewage inside the decontamination tank 102. The sludge is discharged, and the oilfield mixed sewage after solid-liquid separation is transported to the oil-water separation tank 106 for re-filtration through the second connecting pipe 105, and the second solenoid valve 201 is opened, and the oilfield mixed sewage is transported to the oil-water separation tank 106 for re-filtration processing, and the ultrafilter 1061 uses the selective permeability of the membrane to separate and purify the oil pollution, and the floating oil collector 107 inside the oil-water separation tank 106 adsorbs and collects the floating oil on the surface of the oilfield sewage, and then the oil collected by the floating oil collector 107 is transported to the oil storage tank 303 for storage through the oil pump 301.

[0022] The first solenoid valve 2 and the second solenoid valve 201 are fixedly connected to one side of the first connecting pipe 101 and the second connecting pipe 105 , and a second sludge pump 202 is disposed at the bottom end of the oil-water separation tank 106 .

[0023] During specific use, the first solenoid valve 2 and the second solenoid valve 201 are provided to facilitate the control and transportation of oilfield wastewater during the filtering process, and the sludge inside the oil-water separation tank 106 is discharged through the second sludge pump 202 .

[0024] One side of the floating oil collector 107 is connected to the liquid inlet of the oil pump 301 through the telescopic tube 3 , and the liquid outlet of the oil pump 301 is connected to one side of the oil storage tank 303 through the delivery pipe 302 .

[0025] During specific use, the telescopic tube 3 is provided to facilitate the movement of the floating oil collector 107 when collecting floating oil in the oil-water separation tank 106, thereby facilitating floating collection, and the collected floating oil is transported to the inside of the oil storage tank 303 through the oil pump 301.

[0026] One side of the oil-water separation tank 106 is connected to the liquid inlet of the water pump 4 through a water pipe, and the liquid outlet of the water pump 4 is connected to the inside of the water storage tank 401. A second filter screen plate 5 is arranged inside the oilfield sewage filter cartridge 1.

[0027] During specific use, the water in the oil-water separation tank 106 is transported to the water storage tank 401 for storage through the provided water pump 4.

[0028] A switch panel is arranged on one side of the oilfield sewage filter cartridge 1, and a protective layer is arranged on the surface of the switch panel.

[0029] During specific use, the switch panel can be easily protected by the provided protective layer.

[0030] The surface of the switch panel is provided with a first hydrocyclone control switch, a first sludge pump control switch, an ultrafilter control switch, an oil float collector control switch, an oil level sensor control switch, a first solenoid valve control switch, a second solenoid valve control switch, and a second sludge pump control switch. The first hydrocyclone 103, the first sludge pump 104, the ultrafilter 1061, the oil float collector 107, the oil level sensor 108, the first solenoid valve 2, the second solenoid valve 201, and the second sludge pump 202 are electrically connected to an external power supply through the first hydrocyclone control switch, the first sludge pump control switch, the ultrafilter control switch, the oil float collector control switch, the oil level sensor control switch, the first solenoid valve control switch, the second solenoid valve control switch, and the second sludge pump control switch, respectively.

[0031] During specific use, the electrical appliances on the oilfield wastewater treatment and filtering device can be conveniently controlled through the provided switch panel.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oilfield wastewater treatment and filtering device, comprising an oilfield wastewater filtering cartridge (1), characterized in that: The bottom end of the oilfield sewage filter cartridge (1) is connected to the top cover of a dirt removal tank (102) through a first connecting pipe (101); a first filter screen (1021) is arranged inside the dirt removal tank (102); a first hydrocyclone (103) is arranged on one side of the bottom end of the dirt removal tank (102); a first sludge pump (104) is arranged on the side of the dirt removal tank (102); the bottom end of the dirt removal tank (102) is connected to an oil-water separation tank (106) through a second connecting pipe (105); a floating oil collector (107) is arranged inside the oil-water separation tank (106); an oil level sensor (108) is arranged on the side of the inside of the oil-water separation tank (106); and an ultrafilter (1061) is arranged on the side of the inside of the oil-water separation tank (106).

2. The oilfield wastewater treatment and filtering device according to claim 1 is characterized in that: A first solenoid valve (2) and a second solenoid valve (201) are fixedly connected to one side of the first connecting pipe (101) and the second connecting pipe (105), and a second sludge pump (202) is provided at the bottom end of the oil-water separation tank (106).

3. The oilfield wastewater treatment and filtering device according to claim 2 is characterized in that: One side of the floating oil collector (107) is connected to the liquid inlet of the oil pump (301) through a telescopic tube (3), and the liquid outlet of the oil pump (301) is connected to one side of the oil storage tank (303) through a delivery pipe (302).

4. The oilfield wastewater treatment and filtering device according to claim 3 is characterized by: One side of the oil-water separation tank (106) is connected to the liquid inlet of the water pump (4) through a water pipe, and the liquid outlet of the water pump (4) is connected to the inside of the water storage tank (401). A second filter screen plate (5) is provided inside the oilfield sewage filter cartridge (1).

5. The oilfield wastewater treatment and filtering device according to claim 4 is characterized in that: A switch panel is provided on one side of the oilfield sewage filter cartridge (1), and a protective layer is provided on the surface of the switch panel.

6. The oilfield wastewater treatment and filtering device according to claim 5, characterized in that: The surface of the switch panel is provided with a first hydrocyclone control switch, a first sludge pump control switch, an ultrafilter control switch, an oil collector control switch, an oil level sensor control switch, a first solenoid valve control switch, a second solenoid valve control switch, and a second sludge pump control switch; the first hydrocyclone (103), the first sludge pump (104), the ultrafilter (1061), the oil collector (107), the oil level sensor (108), the first solenoid valve (2), the second solenoid valve (201), and the second sludge pump (202) are electrically connected to an external power supply via the first hydrocyclone control switch, the first sludge pump control switch, the ultrafilter control switch, the oil collector control switch, the oil level sensor control switch, the first solenoid valve control switch, the second solenoid valve control switch, and the second sludge pump control switch, respectively.

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