Graphene-based adsorption regeneration device for purifying oily wastewater

Abstract

The utility model provides a graphene-based adsorption regeneration device for purifying oily wastewater, and belongs to the technical field of wastewater treatment equipment. The graphene-based adsorption regeneration device comprises an adsorption filter unit, a graphene sponge filter element and a renewable resource recovery and storage unit, the graphene sponge filter element is arranged in the adsorption filter unit, and the renewable resource recovery and storage unit is arranged on one side of the adsorption filter unit and communicated with the adsorption filter unit; the adsorption filtering unit is matched with the graphene sponge filter element so as to adsorb and filter wastewater entering the adsorption filtering unit; and the renewable resource recovery and storage unit is used for recovering the liquid adsorbed by the graphene sponge filter element. According to the graphene-based adsorption regeneration device, modular design is adopted, and the graphene sponge material is adopted as the filter element, so that harmful substances in wastewater are quickly and effectively removed, the graphene sponge filter element is conveniently and quickly recycled and replaced, the sewage treatment efficiency is improved, and the sewage treatment cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wastewater treatment equipment, and in particular to a graphene-based adsorption regeneration device for purifying oily wastewater. Background Art

[0002] At present, most of the treatments for oily wastewater adopt the adsorption method of porous materials: such as using activated carbon or other porous media with a large specific surface area as adsorbents to remove oil from wastewater. However, these methods all have the problems of low adsorption capacity, difficult regeneration and high treatment cost.

[0003] Graphene is the thinnest carbon material known so far, with a thickness of 0.335nm. At the same time, its large specific surface area and excellent chemical stability make it widely used in the field of physical adsorption. Polyurethane sponge is a good flexible material with a three-dimensional network structure. Graphene fillers can be loaded on its surface and inside by chemical deposition, electroplating, etc. to prepare a multifunctional graphene composite sponge, so that its adsorption capacity exceeds the original material by several to hundreds of times. It has a significant effect in treating oily wastewater from crude oil spills. At the same time, the adsorbed crude oil can be recycled and reused, and it can also be used to recover and separate other non-polar organic pollutants.

[0004] When the existing adsorption device is used to filter and treat oily wastewater, it cannot quickly and effectively adsorb the oil or other pollutants in the wastewater. When the porous adsorption material is saturated with adsorption, it must be replaced in time and cannot be effectively recycled. As a whole, it is time-consuming and labor-intensive, with high investment costs and porous adsorption material processing costs and low processing efficiency. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a graphene-based adsorption regeneration device for purifying oily wastewater, so as to effectively remove harmful substances in the wastewater, facilitate the regeneration and replacement of graphene sponge filter elements, and improve the efficiency of sewage treatment.

[0006] In order to achieve the above utility model purpose, the present invention adopts the following technical solutions:

[0007] The present disclosure provides a graphene-based adsorption and regeneration device for purifying oily wastewater, the graphene-based adsorption and regeneration device comprising an adsorption and filtration unit, a graphene sponge filter element, and a renewable resource recovery and storage unit;

[0008] The graphene sponge filter element is arranged inside the adsorption and filtration unit, and the renewable resource recovery and storage unit is arranged on one side of the adsorption and filtration unit and is connected to the adsorption and filtration unit;

[0009] The adsorption and filtration unit cooperates with the graphene sponge filter element to adsorb and filter the wastewater entering the adsorption and filtration unit;

[0010] The renewable resource recovery and storage unit is used to recover the liquid adsorbed by the graphene sponge filter element.

[0011] In an exemplary embodiment of the present disclosure, the adsorption and filtration unit includes an adsorption and filtration cavity,

[0012] A bottom annular support chamber is provided at the bottom inside the adsorption and filtration cavity, a top annular support chamber is provided at the top inside the adsorption and filtration cavity, the graphene sponge filter element is located between the bottom annular support chamber and the top annular support chamber, and the graphene sponge filter element is detachably connected to the bottom annular support chamber and the top annular support chamber respectively;

[0013] A water inlet pipe communicating with the bottom annular support chamber is provided at the bottom end of the adsorption and filtration cavity, and a water outlet pipe communicating with the top annular support chamber is provided at the top end of the adsorption and filtration cavity.

[0014] In an exemplary embodiment of the present disclosure, the bottom annular support chamber includes:

[0015] A first sleeve is provided at the bottom inside the adsorption and filtration cavity. A plurality of first seal hook seat matrices are spaced apart on the outer wall of the top end of the first sleeve. A second sleeve is coaxially provided inside the first sleeve. First bearings are respectively provided at both ends of the second sleeve. A plurality of first matrix buckles are evenly distributed on the circumferential inner wall of the second sleeve;

[0016] A first annular support bottom plate is provided below the first sleeve. A first groove is provided at the top end of the first annular support bottom plate. The first sleeve and the bottom end of the second sleeve are respectively rotatably provided in the first groove. A driving component is provided in the first groove. The driving component drives the second sleeve to rotate through the first bearing. The water inlet pipe is communicated with the second sleeve;

[0017] A rotating seat is fixedly provided between the first sleeve and the second sleeve. Automatic flap doors are respectively rotatably provided on the outer walls on both sides of the rotating seat.

[0018] In an exemplary embodiment of the present disclosure, the top annular support chamber includes:

[0019] A third sleeve is provided at the top inside the adsorption and filtration cavity. A plurality of second seal hook seat matrices are spaced apart on the outer wall of the bottom end of the third sleeve;

[0020] The fourth sleeve is coaxially arranged inside the third sleeve. Second bearings are respectively arranged at both ends of the fourth sleeve, and a plurality of second parent buckles are evenly distributed on the circumferential inner wall of the fourth sleeve.

[0021] The second annular support base plate is arranged above the third sleeve. A second groove is arranged at the bottom end of the second annular support base plate. The top ends of the third sleeve and the fourth sleeve are respectively rotatably arranged in the second groove, and the water outlet pipe is communicated with the fourth sleeve.

[0022] In an exemplary embodiment of the present disclosure, the bottom end of the third sleeve and the bottom end of the fourth sleeve are hermetically connected through a rubber pad.

[0023] In an exemplary embodiment of the present disclosure, the graphene sponge filter element includes:

[0024] The filter element outer cylinder is arranged inside the adsorption and filtration unit. A plurality of hook seat sub-bodies are respectively arranged at intervals on the circumferential outer walls at both ends of the filter element outer cylinder.

[0025] The filter element inner cylinder is coaxially arranged inside the filter element outer cylinder. Both ends of the filter element inner cylinder are hermetically connected with the filter element outer cylinder through sealing rings, and graphene sponge is arranged on the inner wall of the filter element inner cylinder.

[0026] Liquid infusion pipes are respectively arranged at both ends of the filter element inner cylinder, and a plurality of sub-body buckles are respectively arranged on the circumferential outer walls of the liquid infusion pipes.

[0027] In an exemplary embodiment of the present disclosure, a plurality of first liquid discharge holes are evenly distributed on the sealing ring at the bottom end of the filter element inner cylinder.

[0028] In an exemplary embodiment of the present disclosure, the renewable resource recovery and storage unit includes a regeneration liquid storage tank.

[0029] The regeneration liquid storage tank is arranged on one side of the adsorption and filtration cavity. A second liquid discharge hole is arranged on one side wall of the first groove. The regeneration liquid storage tank and the second liquid discharge hole are communicated through a liquid discharge pipe, and a ball valve is arranged on the liquid discharge pipe.

[0030] In an exemplary embodiment of the present disclosure, an electromagnetic flow regulating valve, a one-way valve and an electromagnetic cut-off valve are sequentially arranged on the water inlet pipe, and the electromagnetic cut-off valve is located at one end of the water inlet pipe close to the adsorption and filtration cavity.

[0031] In an exemplary embodiment of the present disclosure, a bracket is arranged at the bottom end of the adsorption and filtration cavity. A PLC control panel is arranged on one outer wall of the adsorption and filtration cavity, a box door is arranged on the other side wall of the adsorption and filtration cavity, and a handle is arranged on the box door.

[0032] The beneficial effects of the present utility model:

[0033] (1) The utility model adopts a modular design, the connection between the units is simple, the operation is convenient, and the graphene sponge filter element can be quickly replaced.

[0034] (2) The utility model adopts high-efficiency graphene sponge material as the filter element, which can effectively remove harmful substances in the wastewater. At the same time, through the efficient replacement of the graphene sponge filter element, the sewage treatment efficiency can be improved.

[0035] (3) The utility model drives the graphene sponge filter element to rotate and generate centrifugal force to throw out the liquid adsorbed by the graphene sponge, thereby achieving the regeneration of the graphene sponge, reducing the frequency of filter element replacement, achieving resource reuse, improving resource utilization, reducing energy consumption, and reducing the cost of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0037] Figure 1 This is a schematic structural diagram of a graphene-based adsorption regeneration device for purifying oily wastewater in one embodiment of the present disclosure.

[0038] Figure 2 This is a perspective view of a bottom annular support chamber in one embodiment of the present disclosure.

[0039] Figure 3 This is a perspective view of a top annular support chamber in one embodiment of the present disclosure.

[0040] Figure 4 This is a perspective view of a graphene sponge filter element in one embodiment of the present disclosure.

[0041] Description of reference numerals:

[0042] 1. Adsorption and filtration unit; 1.1 Adsorption and filtration cavity; 1.2 Bracket; 1.3 Water inlet pipe; 1.4 Electromagnetic flow regulating valve; 1.5 Check valve; 1.6 Electromagnetic cut-off valve; 1.7 Bottom annular support chamber; 1.7.1 First annular support bottom plate; 1.7.2 First bearing; 1.7.3 First parent buckle; 1.7.4 Automatic flap; 1.7.5 Second sleeve; 1.7.6 Rotating seat; 1.7.7 First sealing hook seat parent body; 1.7.8 First sleeve; 1.8 Top annular support chamber; 1.8.1 Second annular support bottom plate; 1.8.2 Second bearing; 1.8.3 Second parent buckle; 1.8.4 Second sealing hook seat parent body; 1.8.5 Third sleeve; 1.8.6 Fourth sleeve; 1.9 Water outlet pipe; 1.10 PLC control panel; 1.11 Handle; 2. Graphene sponge filter element; 2.1 Filter element outer cylinder; 2.2 Hook seat sub-body; 2.3 Filter element inner cylinder; 2.4 Sealing ring; 2.5 Graphene sponge; 2.6 Infusion pipe; 2.7 Sub-body buckle; 2.8 First drain hole; 3. Recycling resource recovery and storage unit; 3.1 Second drain hole; 3.2 Drain pipe; 3.3 Ball valve; 3.4 Recycling liquid storage tank; 4. Rubber pad. Detailed implementation manners

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various 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, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0044] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0045] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and refer to the existence of additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0046] An embodiment of the present disclosure provides a graphene-based adsorption and regeneration device for purifying oil-containing wastewater. Refer to Figure 1 , the graphene-based adsorption and regeneration device includes an adsorption and filtration unit 1, a graphene sponge filter element 2, and a regeneration resource recovery and storage unit 3; the graphene sponge filter element 2 is disposed inside the adsorption and filtration unit 1, and the regeneration resource recovery and storage unit 3 is disposed on one side of the adsorption and filtration unit 1 and is communicated with the adsorption and filtration unit 1; the adsorption and filtration unit 1 and the graphene sponge filter element 2 cooperate with each other to adsorb and filter the wastewater entering the adsorption and filtration unit 1; the regeneration resource recovery and storage unit 3 is used to recover the liquid adsorbed by the graphene sponge filter element 2.

[0047] In the embodiment of the present disclosure, the graphene-based adsorption and regeneration device is composed of an adsorption and filtration unit 1, a graphene sponge filter element 2, and a regeneration resource recovery and storage unit 3. The graphene sponge filter element 2 is installed inside the adsorption and filtration unit 1, and the regeneration resource recovery and storage unit 3 is installed on one side of the adsorption and filtration unit 1. When it is necessary to purify the oil-containing wastewater, the oil-containing wastewater is introduced into the adsorption and filtration unit 1, and the graphene sponge filter element 2 is used to adsorb and filter the oil-containing wastewater. The qualified liquid flows out of the adsorption and filtration unit 1, and the liquid adsorbed by the graphene sponge filter element 2 is recovered through the regeneration resource recovery and storage unit 3.

[0048] Compared with the existing graphene oil-water separation equipment, the graphene-based adsorption and regeneration device adopts a modular design, the connection between each unit is simple, the operation is convenient, and the graphene sponge filter element can be replaced quickly; an efficient graphene sponge material is used as the filter element, which can effectively remove harmful substances in the wastewater, and at the same time, through the efficient replacement of the graphene sponge filter element, the treatment efficiency of the sewage is improved.

[0049] In an embodiment of the present disclosure, refer to Figure 1, the adsorption and filtration unit 1 includes an adsorption and filtration cavity 1.1. At the inner bottom of the adsorption and filtration cavity 1.1, a bottom annular support chamber 1.7 is provided. At the inner top of the adsorption and filtration cavity 1.1, a top annular support chamber 1.8 is provided. The graphene sponge filter element 2 is located between the bottom annular support chamber 1.7 and the top annular support chamber 1.8. The graphene sponge filter element 2 is detachably connected to the bottom annular support chamber 1.7 and the top annular support chamber 1.8 respectively. At the bottom end of the adsorption and filtration cavity 1.1, a water inlet pipe 1.3 communicating with the bottom annular support chamber 1.7 is provided. At the top end of the adsorption and filtration cavity 1.1, a water outlet pipe 1.9 communicating with the top annular support chamber 1.8 is provided. In this way, the adsorption and filtration of the oily wastewater entering the adsorption and filtration cavity 1.1 by the graphene sponge filter element 2 can be realized.

[0050] It can be understood that the oily or pollutant-containing wastewater to be treated enters the bottom annular support chamber 1.7 through the water inlet pipe 1.3, then flows into the graphene sponge filter element 2. The graphene sponge filter element 2 adsorbs and filters the oily or pollutant-containing wastewater. The liquid that meets the standard after being adsorbed and filtered by the graphene sponge filter element 2 flows into the top annular support chamber 1.8, and then is discharged from the adsorption and filtration cavity 1.1 through the water outlet pipe 1.9.

[0051] Optionally, the effective space volume of the adsorption and filtration cavity 1.1 is 2m 3 , and the adsorption and filtration cavity 1.1 is made of 304L stainless steel with a thickness of 1.5 mm; both the water inlet pipe 1.3 and the water outlet pipe 1.9 are standard stainless steel pipe fittings with a DN25 pipe diameter.

[0052] Optionally, the water inlet pipe 1.3 is equipped with a variety of reducing flange joints, which can be connected to pipelines with different pipe diameters.

[0053] In an embodiment of the present disclosure, refer to Figure 2, the bottom annular support chamber 1.7 includes: a first sleeve 1.7.8 disposed at the inner bottom of the adsorption and filtration cavity 1.1. A plurality of first seal hook seat mothers 1.7.7 are spaced on the outer wall of the top end of the first sleeve 1.7.8. A second sleeve 1.7.5 is coaxially disposed inside the first sleeve 1.7.8. First bearings 1.7.2 are respectively disposed at both ends of the second sleeve 1.7.5. A plurality of first mother buckles 1.7.3 are evenly distributed on the circumferential inner wall of the second sleeve 1.7.5; a first annular support bottom plate 1.7.1 is disposed below the first sleeve 1.7.8. A first groove is provided at the top end of the first annular support bottom plate 1.7.1. The bottom ends of the first sleeve 1.7.8 and the second sleeve 1.7.5 are respectively rotatably disposed in the first groove. A driving component is provided in the first groove. The driving component drives the second sleeve 1.7.5 to rotate through the first bearing 1.7.2. The water inlet pipe 1.3 is communicated with the second sleeve 1.7.5. Thus, the detachable connection between the bottom annular support chamber 1.7 and the graphene sponge filter element 2 is realized through the first seal hook seat mother 1.7.7 and the first mother buckle 1.7.3; by driving the second sleeve 1.7.5 to rotate through the driving component, the rotation of the bottom annular support chamber 1.7 and the graphene sponge filter element 2 is realized, so as to realize the regeneration of the graphene sponge 2.5.

[0054] Optionally, referring to Figure 2 , a rotating seat 1.7.6 is fixedly disposed between the first sleeve 1.7.8 and the second sleeve 1.7.5. Automatic flap plates 1.7.4 are respectively rotatably disposed on the outer walls on both sides of the rotating seat 1.7.6. Thus, through the opening and retraction of the automatic flap plates 1.7.4, the closing and opening of the inner cavity of the first sleeve 1.7.8 can be realized, which is convenient for the discharge of the regeneration liquid.

[0055] For example, when the graphene sponge filter element 2 adsorbs and filters the oily wastewater, the automatic flap plates 1.7.4 on the rotating seat 1.7.6 open parallel to the first annular support bottom plate 1.7.1 and are in a tightly closed state to block the inner cavity of the first sleeve 1.7.8. When the graphene sponge filter element 2 is in the regeneration state, the automatic flap plates 1.7.4 on the rotating seat 1.7.6 retract perpendicular to the first annular support bottom plate 1.7.1, so that the regeneration liquid thrown out by the graphene sponge 2.5 is discharged.

[0056] Optionally, the first annular support bottom plate 1.7.1 serves as the support base of the adsorption and filtration cavity 1.1.

[0057] In an embodiment of the present disclosure, referring to Figure 3, the top annular support chamber 1.8 includes: a third sleeve 1.8.5 provided at the inner top of the adsorption and filtration cavity 1.1, with a plurality of second seal hook seat matrices 1.8.4 spaced on the outer wall of the bottom end of the third sleeve 1.8.5; a fourth sleeve 1.8.6 coaxially provided inside the third sleeve 1.8.5, with second bearings 1.8.2 provided at both ends of the fourth sleeve 1.8.6, and a plurality of second matrix buckles 1.8.3 evenly distributed on the inner circumferential wall of the fourth sleeve 1.8.6; a second annular support bottom plate 1.8.1 provided above the third sleeve 1.8.5, with a second groove provided at the bottom end of the second annular support bottom plate 1.8.1, and the top ends of the third sleeve 1.8.5 and the fourth sleeve 1.8.6 are respectively rotatably provided in the second groove, and the water outlet pipe 1.9 is communicated with the fourth sleeve 1.8.6. Thus, the detachable connection between the top annular support chamber 1.8 and the graphene sponge filter element 2 is realized through the second seal hook seat matrix 1.8.4 and the second matrix buckle 1.8.3, the top annular support chamber 1.8 follows the rotation of the graphene sponge filter element 2, and the liquid that meets the standard after being adsorbed and filtered by the graphene sponge filter element 2 flows out through the top annular support chamber 1.8.

[0058] Optionally, the second annular support bottom plate 1.8.1 serves as the connection top plate of the adsorption and filtration cavity 1.1.

[0059] Optionally, referring to Figure 3 , the bottom end of the third sleeve 1.8.5 and the bottom end of the fourth sleeve 1.8.6 are hermetically connected through a rubber gasket 4. Thus, the closure of the inner cavity of the third sleeve 1.8.5 can be realized, avoiding the leakage of the liquid that meets the standard, so that all the liquid that meets the standard after adsorption and filtration flows out through the top annular support chamber 1.8.

[0060] For example, the rubber gasket 4 is a perfluoro rubber gasket.

[0061] In an embodiment of the present disclosure, referring to Figure 4 , the graphene sponge filter element 2 includes: a filter element outer cylinder 2.1 provided inside the adsorption and filtration unit 1, with a plurality of hook seat sub-bodies 2.2 spaced on the outer circumferential walls of both ends of the filter element outer cylinder 2.1; a filter element inner cylinder 2.3 coaxially provided inside the filter element outer cylinder 2.1, with both ends of the filter element inner cylinder 2.3 hermetically connected to the filter element outer cylinder 2.1 through a sealing ring 2.4, and a graphene sponge 2.5 provided on the inner wall of the filter element inner cylinder 2.3; infusion pipes 2.6 are respectively provided at both ends of the filter element inner cylinder 2.3, and a plurality of sub-body buckles 2.7 are respectively provided on the outer circumferential walls of the infusion pipes 2.6. Thus, the adsorption and filtration of the wastewater entering the graphene sponge filter element 2 can be realized, and the regeneration of the graphene sponge 2.5 saturated with adsorption can be realized.

[0062] It can be understood that the detachable connection between the filter element outer cylinder 2.1 and the first sleeve 1.7.8 and the third sleeve 1.8.5 is realized by the detachable connection of the hook seat body 2.2 with the first sealing hook seat parent body 1.7.7 and the second sealing hook seat parent body 1.8.4 respectively; the detachable connection between the filter element inner cylinder 2.3 and the second sleeve 1.7.5 and the fourth sleeve 1.8.6 is realized by the detachable connection of the child body buckle 2.7 with the first parent body buckle 1.7.3 and the second parent body buckle 1.8.3, so as to realize the detachable connection between the graphene sponge filter element 2 and the bottom annular support chamber 1.7 and the top annular support chamber 1.8.

[0063] It can be understood that the driving assembly drives the second sleeve 1.7.5 to rotate, drives the filter element outer cylinder 2.1 and the filter element inner cylinder 2.3 to rotate, drives the graphene sponge 2.5 to rotate, so that the liquid adsorbed by the graphene sponge 2.5 is thrown out by the rotational centrifugal method, realizing the regeneration of the graphene sponge 2.5.

[0064] Optionally, the regeneration times of the graphene sponge 2.5 are not less than 20 times, and the service life of the graphene sponge 2.5 is 1-2 years; the dynamic oil absorption rate of the graphene sponge 2.5 is 25g Oil / g Sponge, and the water content of the regenerated liquid thrown out by the graphene sponge 2.5 is less than 10%. In this way, efficient oil-water separation can be achieved.

[0065] Optionally, the material of the filter element outer cylinder 2.1 is 304L stainless steel, and the filter element outer cylinder 2.1 is made by curling a stainless steel plate with a thickness of 1.5mm; the filter element inner cylinder 2.3 is made of a stainless steel screen with a thickness of 1.5mm and a pore diameter of 5mm.

[0066] Optionally, the sealing ring 2.4 is hermetically welded to the filter element outer cylinder 2.1 and the filter element inner cylinder 2.3 respectively.

[0067] In an embodiment of the present disclosure, see Figure 4 , a plurality of first drain holes 2.8 are evenly distributed on the sealing ring 2.4 at the bottom end of the filter element inner cylinder 2.3. In this way, the regenerated liquid thrown out by the graphene sponge 2.5 can be discharged through the first drain holes 2.8, which is convenient for recycling the regenerated liquid.

[0068] In an embodiment of the present disclosure, see Figure 1 , the renewable resource recovery and storage unit 3 includes a regenerated liquid storage tank 3.4, the regenerated liquid storage tank 3.4 is arranged on one side of the adsorption and filtration cavity 1.1, a second drain hole 3.1 is arranged on one side wall of the first groove, and the regenerated liquid storage tank 3.4 is communicated with the second drain hole 3.1 through a drain pipe 3.2, and a ball valve 3.3 is arranged on the drain pipe 3.2. In this way, the regenerated liquid can be separated and stored, achieving the effect of resource recovery.

[0069] Optionally, the drain pipe 3.2 is a DN15 stainless steel standard pipe fitting, and the volume of the regeneration liquid storage tank 3.4 is 1m 3 .

[0070] In an embodiment of the present disclosure, referring to Figure 1 , an electromagnetic flow regulating valve 1.4, a one-way valve 1.5, and an electromagnetic cut-off valve 1.6 are sequentially arranged on the water inlet pipe 1.3, and the electromagnetic cut-off valve 1.6 is located at one end of the water inlet pipe 1.3 close to the adsorption and filtration cavity 1.1. In this way, the liquid inflow volume of the oil-containing wastewater entering the adsorption and filtration unit 1 can be controlled.

[0071] Optionally, the electromagnetic flow regulating valve 1.4 is used to precisely control the water inlet flow rate by adjusting the valve opening and record the cumulative liquid inflow volume; the valve opening adjustment range of the electromagnetic flow regulating valve 1.4 is 0-100%, and the flow rate upper limit of the electromagnetic flow regulating valve 1.4 is 2m 3 / h.

[0072] Optionally, the one-way valve 1.5 is used to prevent the backflow of the accumulated liquid in the adsorption and filtration unit 1 during the regeneration or replacement of the graphene sponge filter element 2.

[0073] Optionally, the electromagnetic cut-off valve 1.6 is used to realize the start or termination of liquid inflow.

[0074] In an embodiment of the present disclosure, referring to Figure 1 , a bracket 1.2 is arranged at the bottom end of the adsorption and filtration cavity 1.1. In this way, the adsorption and filtration unit 1 can be supported to improve the stability of the adsorption and filtration unit 1.

[0075] Optionally, the bracket 1.2 is welded to the adsorption and filtration cavity 1.1. The bracket 1.2 is a three-dimensional telescopic bracket, and the legs of the bracket 1.2 can be telescoped up and down to adjust the height of the bracket 1.2. The height adjustment range of the bracket 1.2 is 0.5-1m. In this way, the adsorption and filtration unit 1 can adapt to the heights of different use environments.

[0076] Optionally, referring to Figure 1 , a PLC control panel 1.10 is arranged on the outer wall of one side of the adsorption and filtration cavity 1.1. In this way, the operation of the graphene adsorption device can be controlled through the PLC control panel 1.10.

[0077] For example, the PLC control panel 1.10 controls the opening and retraction of the automatic flap 1.7.4 through the PLC control program; controls the start and stop of the drive assembly; controls the valve opening of the electromagnetic flow regulating valve 1.4 to control the size of the liquid inlet flow; controls the opening or closing of the electromagnetic cut-off valve 1.6 to connect or block the liquid inlet. During the adsorption and filtration process of the graphene sponge filter element 2, the electromagnetic cut-off valve 1.6 is opened, and during the regeneration process of the graphene sponge filter element 2, the electromagnetic cut-off valve 1.6 is closed.

[0078] Optionally, referring to Figure 1 , a box door is provided on the other side wall of the adsorption and filtration cavity 1.1, and a handle 1.11 is provided on the box door. In this way, the graphene sponge filter element 2 can be quickly disassembled and replaced.

[0079] It can be understood that by opening the box door through the handle 1.11, the non-regenerable graphene sponge filter element 2 is disassembled, and a new graphene sponge filter element 2 is replaced to resume work.

[0080] In an embodiment of the present disclosure, the graphene sponge 2.5 can calculate its adsorption saturation time according to the oil content of the oily wastewater entering the adsorption and filtration unit 1. By setting the adsorption saturation time in the PLC control program of the PLC control panel 1.10, the graphene adsorption and regeneration device automatically performs regeneration treatment on the graphene sponge 2.5 according to the set time.

[0081] In an embodiment of the present disclosure, referring to Figures 1 to 4 , the working process of the graphene-based adsorption and regeneration device for purifying oily wastewater is briefly described as follows:

[0082] When the present disclosure is in use, first, a new graphene sponge filter element 2 is installed into the adsorption and filtration cavity 1.1. The liquid delivery pipe 2.6 at the bottom end of the inner cylinder 2.3 of the filter element is installed into the second sleeve 1.7.5, so that the child body buckle 2.7 is hermetically connected to the first parent body buckle 1.7.3. The liquid delivery pipe 2.6 at the top end of the inner cylinder 2.3 of the filter element is installed into the fourth sleeve 1.8.6, so that the child body buckle 2.7 is hermetically connected to the second parent body buckle 1.8.3. The hook seat child body 2.2 at the bottom end of the outer cylinder 2.1 of the filter element is tightly buckled and connected to the first sealed hook seat parent body 1.7.7. The hook seat child body 2.2 at the top end of the outer cylinder 2.1 of the filter element is tightly buckled and connected to the second sealed hook seat parent body 1.8.4, completing the installation of the graphene sponge filter element 2. The automatic flap 1.7.4 is controlled by the PLC control panel 1.10 to open, so that the automatic flap 1.7.4 is in a tightly closed state parallel to the first annular support bottom plate 1.7.1. Then, the electromagnetic cut-off valve 1.6 and the one-way valve 1.5 are started, and the oily wastewater is introduced into the adsorption and filtration cavity 1.1 through the liquid inlet pipe 1.3. The electromagnetic flow regulating valve 1.4 is started to control the flow rate of the liquid inlet pipe 1.3. The oily wastewater entering the adsorption and filtration cavity 1.1 flows into the inner cylinder 2.3 of the filter element through the second sleeve 1.7.5 and the liquid delivery pipe 2.6. The graphene sponge 2.5 adsorbs and filters the oily wastewater. The qualified liquid after adsorption and filtration flows into the fourth sleeve 1.8.6 of the top annular support chamber 1.8, and then flows out of the adsorption and filtration cavity 1.1 through the water outlet pipe 1.9. When the graphene sponge 2.5 is saturated with adsorption, the electromagnetic flow regulating valve 1.4, the one-way valve 1.5 and the electromagnetic cut-off valve 1.6 are closed, and the automatic flap 1.7.4 is controlled to retract, so that the automatic flap 1.7.4 is perpendicular to the first annular support bottom plate 1.7.1. The driving assembly is started to drive the second sleeve 1.7.5 to rotate, thereby driving the graphene sponge filter element 2, the bottom annular support chamber 1.7 and the top annular support chamber 1.8 to rotate. The liquid adsorbed by the graphene sponge 2.5 is thrown out under the action of centrifugal force, realizing the regeneration of the graphene sponge 2.5. The regenerated liquid thrown out by the graphene sponge 2.5 enters the inner cavity between the outer cylinder 2.1 and the inner cylinder 2.3 of the filter element, and then flows into the first groove through the first drain hole 2.8. The ball valve 3.3 is started, so that the regenerated liquid flows into the regenerated liquid storage tank 3.4 through the second drain hole 3.1 and the drain pipe 3.2, realizing the separation and storage of the regenerated liquid. When the regeneration of the graphene sponge 2.5 is completed, the ball valve 3.3 is closed, the automatic flap 1.7.4 is opened, the electromagnetic flow regulating valve 1.4, the one-way valve 1.5 and the electromagnetic cut-off valve 1.6 are started, and the oily wastewater is introduced into the adsorption and filtration cavity 1.1 again to continue purifying the oily wastewater.

[0083] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A graphene-based adsorption regeneration device for purifying oily wastewater, characterized in that: The graphene-based adsorption and regeneration device comprises an adsorption and filtration unit (1), a graphene sponge filter element (2), and a renewable resource recovery and storage unit (3); The graphene sponge filter element (2) is arranged inside the adsorption and filtration unit (1), and the renewable resource recovery and storage unit (3) is arranged on one side of the adsorption and filtration unit (1) and is in communication with the adsorption and filtration unit (1); The adsorption and filtration unit (1) cooperates with the graphene sponge filter element (2) to perform adsorption and filtration on the wastewater entering the adsorption and filtration unit (1); The renewable resource recovery storage unit (3) is used to recover the liquid adsorbed by the graphene sponge filter element (2).

2. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 1, characterized in that: The adsorption filtration unit (1) comprises an adsorption filtration chamber (1.1), A bottom annular support chamber (1.7) is provided at the bottom of the adsorption filter chamber (1.1), a top annular support chamber (1.8) is provided at the top of the adsorption filter chamber (1.1), the graphene sponge filter element (2) is located between the bottom annular support chamber (1.7) and the top annular support chamber (1.8), and the graphene sponge filter element (2) is detachably connected to the bottom annular support chamber (1.7) and the top annular support chamber (1.8) respectively; The bottom end of the adsorption and filtration cavity (1.1) is provided with a water inlet pipe (1.3) connected to the bottom annular support chamber (1.7), and the top end of the adsorption and filtration cavity (1.1) is provided with a water outlet pipe (1.9) connected to the top annular support chamber (1.8).

3. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 2, characterized in that: The bottom annular support chamber (1.7) comprises: A first sleeve (1.7.8) is arranged at the bottom of the adsorption filter cavity (1.1); a plurality of first sealing hook seat mother bodies (1.7.7) are arranged at intervals on the circumferential outer wall of the top end of the first sleeve (1.7.8); a second sleeve (1.7.5) is coaxially arranged inside the first sleeve (1.7.8); first bearings (1.7.2) are respectively arranged at both ends of the second sleeve (1.7.5); and a plurality of first mother body buckles (1.7.3) are evenly distributed on the circumferential inner wall of the second sleeve (1.7.5); A first annular support base plate (1.7.1) is disposed below the first sleeve (1.7.8); a first groove is disposed at the top of the first annular support base plate (1.7.1); the bottom ends of the first sleeve (1.7.8) and the second sleeve (1.7.5) are rotatably disposed in the first groove respectively; a driving assembly is disposed in the first groove; the driving assembly drives the second sleeve (1.7.5) to rotate via the first bearing (1.7.2); and the water inlet pipe (1.3) is connected to the second sleeve (1.7.5); The rotating seat (1.7.6) is fixedly arranged between the first sleeve (1.7.8) and the second sleeve (1.7.5), and automatic flaps (1.7.4) are rotatably arranged on the outer walls on both sides of the rotating seat (1.7.6).

4. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 3, characterized in that: The top annular support chamber (1.8) comprises: A third sleeve (1.8.5) is arranged at the top of the adsorption filter cavity (1.1), and a plurality of second sealing hook seat mother bodies (1.8.4) are arranged at intervals on the circumferential outer wall of the bottom end of the third sleeve (1.8.5); A fourth sleeve (1.8.6) is coaxially arranged in the third sleeve (1.8.5), and second bearings (1.8.2) are respectively arranged at both ends of the fourth sleeve (1.8.6). A plurality of second mother buckles (1.8.3) are evenly distributed on the circumferential inner wall of the fourth sleeve (1.8.6); The second annular support base plate (1.8.1) is arranged above the third sleeve (1.8.5), and a second groove is arranged at the bottom end of the second annular support base plate (1.8.1). The top ends of the third sleeve (1.8.5) and the fourth sleeve (1.8.6) are rotatably arranged in the second groove respectively, and the water outlet pipe (1.9) is connected to the fourth sleeve (1.8.6).

5. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 4, characterized in that: The bottom end of the third sleeve (1.8.5) and the bottom end of the fourth sleeve (1.8.6) are sealed and connected via a rubber pad (4).

6. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 1, characterized in that: The graphene sponge filter element (2) comprises: A filter element outer cylinder (2.1) is arranged inside the adsorption filter unit (1), and a plurality of hook seat sub-bodies (2.2) are arranged at intervals on the circumferential outer walls at both ends of the filter element outer cylinder (2.1); The filter element inner cylinder (2.3) is coaxially arranged in the filter element outer cylinder (2.1), and both ends of the filter element inner cylinder (2.3) are sealedly connected to the filter element outer cylinder (2.1) via sealing rings (2.4), and a graphene sponge (2.5) is arranged on the inner wall of the filter element inner cylinder (2.3); Both ends of the filter core inner tube (2.3) are respectively provided with liquid infusion tubes (2.6), and a plurality of sub-body buckles (2.7) are respectively provided on the circumferential outer walls of the liquid infusion tubes (2.6).

7. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 6, characterized in that: A plurality of first liquid discharge holes (2.8) are evenly distributed on the sealing ring (2.4) at the bottom end of the filter element inner cylinder (2.3).

8. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 3, characterized in that: The renewable resource recovery storage unit (3) comprises a regeneration liquid storage tank (3.4), The regeneration liquid storage tank (3.4) is arranged on one side of the adsorption filter cavity (1.1); a second liquid discharge hole (3.1) is arranged on one side wall of the first groove; the regeneration liquid storage tank (3.4) and the second liquid discharge hole (3.1) are connected via a liquid discharge pipe (3.2); and a ball valve (3.3) is arranged on the liquid discharge pipe (3.2).

9. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 2, characterized in that: An electromagnetic flow regulating valve (1.4), a one-way valve (1.5) and an electromagnetic shut-off valve (1.6) are sequentially arranged on the water inlet pipe (1.3); the electromagnetic shut-off valve (1.6) is located at one end of the water inlet pipe (1.3) close to the adsorption filter cavity (1.1).

10. A graphene-based adsorption and regeneration device for purifying oily wastewater according to claim 2, characterized in that: A bracket (1.2) is provided at the bottom end of the adsorption filtration cavity (1.1), a PLC control panel (1.10) is provided on an outer wall of one side of the adsorption filtration cavity (1.1), and a box door is provided on the other side wall of the adsorption filtration cavity (1.1), and a handle (1.11) is provided on the box door.

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