Oil-water separator and oil-water separation device for sewage treatment

Abstract

The utility model discloses an oil-water separator for sewage treatment, which comprises a three-dimensional component with an inner cavity, the three-dimensional component is provided with a top surface and a bottom surface, and a plurality of oil absorption components for absorbing and collecting an oil phase in oily sewage are arranged on the three-dimensional component. The oil absorption component is arranged in the inner cavity, the connecting pipes are used for conveying oil-removed sewage into the inner cavity through the oil absorption component, the oil absorption component is communicated with the inner cavity through the connecting pipes, and a water outlet which is communicated with the inner cavity and used for driving the oil-containing sewage to enter the oil absorption component, sucking the oil-removed sewage into the inner cavity and discharging the oil-removed sewage is formed in the top surface of the three-dimensional component. By utilizing the inspiration of a shower head and arranging a plurality of oil absorption components which extend downwards on the three-dimensional component, the adsorption area is greatly increased, the adsorption efficiency in unit time is improved, and the oil-water separator can be used for oil-water separation, heavy metal ion adsorption, dye adsorption in water and the like, and is wide in application scene and wide in application prospect.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment equipment, in particular to an oil-water separator and an oil-water separation device for sewage treatment. Background Art

[0002] Sewage treatment refers to the process of purifying sewage to meet the water quality requirements for discharging into a certain water body or for reuse. Sewage treatment is widely applied in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering, and is also increasingly entering the daily lives of ordinary people.

[0003] Oil-water separation is an important link in sewage treatment. Oil-water separation refers to the process of separating oil and water in sewage, aiming to reduce the oil concentration and the pollution degree of sewage. Currently, the oil-water separators on the market can be mainly divided into three categories: multi-chamber oil-water separators, oil-water separators using centrifugation, and oil-water separators using functional materials for water filtration. The prior art is as follows:

[0004] CN 111298509 A discloses a multi-stage cylindrical oil-water separation device. It includes a first-stage pipe diameter, a second-stage pipe diameter, a third-stage pipe diameter, a conical joint, a first-stage cover plate type spiral flow channel, a second-stage bracket type spiral flow channel, a third-stage bracket type spiral flow channel, etc.; each stage of pipe diameter and each stage of cover plate type spiral flow channel are used for multi-stage separation of the mixed liquid and collecting the oil phase; the water phase moves towards the side wall and is discharged from the third-stage drainage hole of the device for collection, and the oil phase is discharged from the third-stage oil phase outlet of the device for collection, completing the multi-stage high-precision separation of the oil-water mixed phase.

[0005] CN 115445318 A discloses a centrifugal separation treatment device for oily sewage. The centrifugal separation treatment device for oily sewage includes a box body, a partition is fixedly installed at the central position inside the box body, and a first motor is fixedly installed on the lower surface of the partition. The output end of the first motor is rotationally connected to the bottom end of a transmission rod through a coupling, and the top end of the transmission rod penetrates through the bearing on the partition and extends upward and is fixedly installed with a first triangular frame.

[0006] CN 113860429 A discloses an oil-water separation device and an oil-water separation method, which relates to the technical field of wastewater treatment devices. The invention utilizes an environment-friendly functional membrane material to enable the water phase to discharge from the separation chamber, while the oil phase is blocked in the separation chamber, thereby realizing the complete separation of oil and water; the invention utilizes a clean water chamber to recover the water flowing out of the separation chamber.

[0007] As can be seen from the above patent technology, the multi-chamber oil-water separator has a relatively complex structure and high production costs; the oil-water separator using centrifugation has high requirements for the strength of the device's appearance materials and consumes a large amount of energy during operation; the oil-water separation device using functional materials for water filtration has limited application scenarios for oil-water separation because the filtered water needs to be stored in a storage container.

[0008] In summary, the existing oil-water separation devices generally have one or more of the following disadvantages: complex structure, high cost, poor oil-water separation effect, high energy consumption, and limited application scenarios. Therefore, how to effectively reduce costs, improve the oil-water separation effect and efficiency, while reducing energy consumption and making the application scenarios more extensive has become a difficult problem that technicians in the field of sewage treatment urgently need to solve. Summary of the Invention

[0009] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present utility model is to provide an oil-water separator and an oil-water separation device for sewage treatment, which have a simple structure, low cost, can improve the oil-water separation effect and efficiency, and reduce energy consumption at the same time.

[0010] To solve the above technical problem, the technical solution adopted by the present utility model is: an oil-water separator for sewage treatment, including a three-dimensional component with an inner cavity, the three-dimensional component having a top surface and a bottom surface, and provided with a plurality of oil absorption components on the three-dimensional component for adsorbing and collecting the oil phase in the oily sewage, and a plurality of connecting pipes for transporting the sewage after oil removal through the oil absorption components to the inner cavity, the oil absorption components are respectively communicated with the inner cavity through each connecting pipe, and a drainage port communicated with the inner cavity is provided on the top surface of the three-dimensional component for driving the oily sewage into the oil absorption components and sucking the sewage after oil removal into the inner cavity and discharging it.

[0011] For the above oil-water separator for sewage treatment, the plurality of oil absorption components are arranged to extend downward along the vertical direction of the bottom surface of the three-dimensional component, the upper end of the connecting pipe is communicated with the inner cavity, and the lower end is communicated with the three-dimensional component.

[0012] For the above oil-water separator for sewage treatment, the oil absorption component includes a cylindrical frame body and a net body covering the surface of the cylindrical frame body, and a containing cavity for filling oil absorption material is formed inside the net body.

[0013] For the above oil-water separator for sewage treatment, a bracket for fixedly connecting the pipe is provided at the top of the cylindrical frame body, and a threaded sleeve is provided on the bracket, and the connecting pipe is threadedly connected with the threaded sleeve.

[0014] For the above oil-water separator for sewage treatment, the three-dimensional component is a disc structure, the disc structure includes a disc base and a cover body hermetically connected thereto, and the inner cavity is formed by the concave of the disc base.

[0015] For the above oil-water separator for sewage treatment, the drain outlet is provided on the cover body.

[0016] For the above oil-water separator for sewage treatment, a protective net for preventing sundries from blocking the oil absorption component is arranged at the bottom of the disc structure, and the protective net is fixed to the disc base.

[0017] For the above oil-water separator for sewage treatment, a foam board for controlling the immersion depth of the oil absorption component in the oil-containing sewage liquid level is arranged on the bottom surface of the three-dimensional component.

[0018] An oil-water separation device includes a pump respectively used for providing suction and conveying power to oil-containing sewage and sewage after oil removal. A first pipeline for sucking oil-containing sewage and a second pipeline for conveying sewage after oil removal are respectively connected to the pump, and an oil-water separator is arranged at the water inlet end of the first pipeline.

[0019] For the above oil-water separation device, a container for collecting sewage after oil removal is connected to the water outlet end of the second pipeline.

[0020] The advantages of the oil-water separator and the oil-water separation device for sewage treatment of the present utility model are: high conversion efficiency, low use cost, simple preparation, extremely low energy consumption. Compared with the traditional oil-water separator, not only the structure and process are simple, but also inspired by the "shower head", by arranging a number of downward-extending oil absorption components on the three-dimensional component, the adsorption area is greatly increased, the adsorption efficiency per unit time is improved, the floating working mode is more flexible and simple, the oil-water separator does not need to be fixed, and the operation is convenient. The present utility model can be used for oil-water separation, heavy metal ion adsorption, water dye adsorption, etc., with a wide range of application scenarios and broad application prospects. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the oil-water separator of Embodiment 1 of the present utility model;

[0022] Figure 2 It is a full cross-sectional view of the oil-water separator of Embodiment 1 of the present utility model;

[0023] Figure 3 It is an enlarged schematic diagram of the structure of the oil absorption component of Embodiment 1;

[0024] Figure 4 It is a schematic diagram of the structure of the bottom surface of the oil-water separator of Embodiment 1;

[0025] Figure 5 It is a schematic diagram of the overall structure of the oil-water separation device of Embodiment 1;

[0026] Figure 6 It is a schematic diagram of the structure of the bottom surface of the oil-water separator of Embodiment 2;

[0027] Figure 7 It is a schematic structural diagram of the oil-water separation device in Embodiment 3. Specific embodiments

[0028] The following further describes the present utility model in detail with reference to the accompanying drawings and specific embodiments.

[0029] Embodiment 1:

[0030] As Figure 1 、 2 shown, an oil-water separator for sewage treatment includes a three-dimensional component 2 having an inner cavity 1. The three-dimensional component 2 has a top surface 3 and a bottom surface 4. A plurality of oil-absorbing components 5 for adsorbing and collecting the oil phase in the oily sewage are provided on the three-dimensional component 2, and a plurality of connecting pipes 6 for transporting the sewage after oil removal to the inner cavity 1 through the oil-absorbing components. The oil-absorbing components 5 are respectively communicated with the inner cavity 2 through the connecting pipes 6. A drainage port 7 communicated with the inner cavity 1 is provided on the top surface 3 of the three-dimensional component 2 for driving the oily sewage into the oil-absorbing components 5 and sucking the sewage after oil removal into the inner cavity 1 and discharging it.

[0031] Among them, a plurality of oil-absorbing components are arranged to extend downward along the vertical direction of the bottom surface of the three-dimensional component. The upper end of the connecting pipe is communicated with the inner cavity, and the lower end is communicated with the three-dimensional component. In this embodiment, the length of the connecting pipe can be flexibly selected according to the actual oil removal and filtration environment.

[0032] As Figure 3 shown, the oil-absorbing component 5 includes a cylindrical frame body 8 and a net body 9 covering the surface of the cylindrical frame body 8. A containing cavity 10 for filling oil-absorbing materials is formed in the net body 9. The oil-absorbing material can be any one of polypropylene melt-blown oil-absorbing felt, polylactic acid melt-blown oil-absorbing felt, kapok fiber-based oil-absorbing felt, polystyrene-based oil-absorbing material, and carbonized cellulose oil-absorbing cotton. The net body 9 can use a metal net or a net cloth with a porous structure to facilitate the entry of oily sewage. In order to improve the fixing strength between the connecting pipe 6 and the oil-absorbing component 5 and prevent it from falling off after being soaked in oily sewage for a long time, a bracket 11 for fixing the connecting pipe 6 is provided at the top of the cylindrical frame body 8, and a threaded sleeve 12 is provided on the bracket 11. The connecting pipe 6 is threadedly connected to the threaded sleeve 12. This threaded connection method is convenient for disassembling and replacing the oil-absorbing material, and the maintenance is more convenient. Of course, the specific shape of the oil-absorbing component 5 is not limited to the cylindrical structure described in Embodiment 1. As long as it is a spherical body, a cube, or a cuboid with a large surface area, it can meet the working requirements of the oil-absorbing component.

[0033] In this embodiment, the three-dimensional component 2 has a disc structure, which includes a disc base 13 and a cover 14 hermetically connected thereto. The sealing can be achieved by using conventional components such as screws and gaskets in the mechanical field. This technology is conventional and will not be introduced in detail. The inner cavity 1 is formed by the concave of the disc base 13, and the drain port 7 is opened on the cover 14. Of course, according to the actual oil removal environment and the situation of the oil-containing sewage storage equipment, the three-dimensional component 2 can be made into shapes such as a cuboid or a cube, without being limited by this embodiment.

[0034] As Figure 1 , 4 shown, in order to prevent the oil absorption component 5 from being damaged and externally damaged, avoid debris blocking the oil absorption component 5, extend the service life of the oil absorption component 5, and improve the separation efficiency, a protective net 15 is provided at the bottom of the disc structure, and the protective net 15 is fixed to the disc base 13. In the present utility model, the protective net 15 can be made of a conventional metal net. In order to avoid the problem of rusting due to long-term immersion, painting means can be used or a rust-proof metal net can be selected, and the protective net 15 with an installation size matching the actual disc structure and size is made.

[0035] As Figure 2 , 4 shown, since the oil phase in the oil-containing sewage mainly floats on the surface of the sewage, and some oil phase particles are mixed inside the sewage, therefore, in order to prevent the three-dimensional component 2 from sinking into the oil-containing sewage during the oil absorption process, affecting the oil phase adsorption effect and efficiency, according to the different situations of the actual oil-containing sewage, a foam board 16 for controlling the immersion depth of the oil absorption component 5 in the oil-containing sewage liquid level is provided at the bottom surface 4 of the three-dimensional component 2. In order not to affect the installation of the oil absorption component 5, the foam board 16 is installed at the center of the bottom surface 2 of the three-dimensional component 2, and the foam board 16 is fixed in the circular groove by opening a circular groove at the bottom surface 4. The buoyancy provided by the foam board 16 enables the three-dimensional component 2 to always work in a floating state, which can reduce the height of the oil absorption component 5 from the oil-containing sewage liquid level, avoid the problem of the oil absorption component 5 floating up and down due to the liquid level fluctuation, ensure that the oil absorption component 5 is always below the liquid level, and thus improve the filtration efficiency.

[0036] As Figure 5 shown, an oil-water separation device includes a pump 17 respectively used to provide suction and conveying power for the oil-containing sewage and the sewage after oil removal. A first pipeline 18 for sucking the oil-containing sewage and a second pipeline 19 for conveying the sewage after oil removal are respectively connected to the pump 17. The oil-water separator of the present utility model is provided at the water inlet end 20 of the first pipeline 18. A container 22 for collecting the sewage after oil removal is connected to the water outlet end 21 of the second pipeline 19. Among them, the pump is a peristaltic pump. In this embodiment, the inner diameters of the first pipeline 18 and the second pipeline 19 are both 4 mm, and the outer diameters are 8 mm. The diameter of the oil absorption component 5 is 10 mm, and the height is 12 mm.

[0037] The working process of the oil-water separation device of the present utility model is as follows:

[0038] Pour the mixed oil sewage into the container, place the three-dimensional component 2 of the oil-water separation device of Embodiment 1 in the sewage level in the container, adjust the rate of the peristaltic pump to between 100 ml / min and 200 ml / min, turn on the peristaltic pump, the oil phase is adsorbed by the oil absorption component 5 and stays in the oil absorption component 5, and the oil-free sewage passes through the first pipeline 18, the peristaltic pump and the second pipeline 19 into the container 22 in sequence, and wait for the device to complete the work. At this time, the oil and water are separated.

[0039] Embodiment 2:

[0040] The same parts of this embodiment and Embodiment 1 will not be described in detail. The difference lies in that as Figure 6 shown, in order to meet different requirements such as oil-water separation, heavy metal ion adsorption, and dye adsorption in water, and to maximize the adsorption effect and adsorption efficiency, according to different situations, the number of oil absorption components 5 can be increased on the bottom surface 4 of the three-dimensional component 2.

[0041] Embodiment 3:

[0042] The same parts of this embodiment and Embodiments 1 and 2 will not be described in detail. The difference lies in that as Figure 7 shown, for the oil-containing sewage with a large treatment volume or the large oil-containing sewage storage tank 23, in the case where it is inconvenient to collect the separated sewage separately, in order to save space and reduce the cost of oil-water separation, the water outlet end 21 of the second pipeline 19 for transporting the deoiled sewage is directly placed in the large oil-containing sewage storage tank 23 to realize the on-site circulating oil-water separation work in the large oil-containing sewage storage tank 23, making the oil-water separation work more convenient.

[0043] Certainly, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An oil-water separator for sewage treatment, characterized in that: The invention comprises a three-dimensional component with an inner cavity, wherein the three-dimensional component has a top surface and a bottom surface, and is provided with a plurality of oil-absorbing components for absorbing and collecting the oil phase in the oil-containing wastewater, and a plurality of connecting pipes for conveying the wastewater after deoiling to the inner cavity through the oil-absorbing components. The oil-absorbing components are connected with the inner cavity through the connecting pipes respectively, and a drainage port connected with the inner cavity is provided on the top surface of the three-dimensional component for driving the oil-containing wastewater into the oil-absorbing components and sucking the wastewater after deoiling into the inner cavity and discharging it; the oil-absorbing component comprises a cylindrical frame body, and a mesh body covering the surface of the cylindrical frame body, and a containing cavity for filling the oil-absorbing material is formed in the mesh body.

2. The oil-water separator for sewage treatment according to claim 1, characterized in that: The plurality of oil absorbing components are extended downwardly in the vertical direction of the bottom surface of the three-dimensional component. The upper end of the connecting pipe is communicated with the inner cavity, and the lower end is communicated with the three-dimensional component.

3. The oil-water separator for sewage treatment according to claim 1 is characterized in that: A bracket for fixing a connecting pipe is arranged on the top of the cylindrical frame body, a threaded sleeve is arranged on the bracket, and the connecting pipe is threadedly connected with the threaded sleeve.

4. The oil-water separator for sewage treatment according to claim 1 is characterized in that: The three-dimensional component is a disc structure, which includes a disc base and a cover body sealedly connected thereto, and the inner cavity is formed by the indentation of the disc base.

5. The oil-water separator for sewage treatment according to claim 4 is characterized in that: The drain port is arranged on the cover body.

6. The oil-water separator for sewage treatment according to claim 4 is characterized in that: A protective net is arranged at the bottom of the disc structure to prevent debris from clogging the oil absorption component, and the protective net is fixed to the disc base.

7. The oil-water separator for sewage treatment according to claim 1 is characterized in that: A foam plate for controlling the depth of the oil-absorbing component immersed in the oily sewage liquid surface is arranged on the bottom surface of the three-dimensional component.

8. An oil-water separation device, comprising a pump for providing suction and delivery power to oily wastewater and deoiled wastewater, respectively, a first pipeline for sucking the oily wastewater and a second pipeline for delivering the deoiled wastewater are connected to the pump, respectively, characterized in that: The water inlet end of the first pipeline is provided with an oil-water separator as described in any one of claims 1-7.

9. The oil-water separation device according to claim 8, characterized in that: The water outlet end of the second pipeline is connected to a container for collecting deoiled wastewater.

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