Oily water recycling and separating device

Abstract

The invention discloses an oily water recovery and separation device in the field of oily water treatment. A multi-stage separation module, a cleaning agent proportioning module and a cleaning module are mounted on an omnidirectional mobile vehicle; the multi-stage separation module comprises a primary separation box, a cyclone centrifugal separator and an electric flocculation device; the cleaning module comprises a suction device and a cleaning device, the suction device is used for sucking sewage on the working surface, and the cleaning device is used for cleaning the working surface; the cleaning agent proportioning module is used for uniformly mixing a cleaning agent and water according to a certain proportion, and the mixed cleaning agent and water are conveyed to the cleaning device; the oily water recovery and separation device provided by the invention comprises the suction device and the cleaning device, can realize suction and cleaning of sewage on a working surface, and is also provided with the multi-stage separation module, and the sucked oily water is discharged after oil-water separation. The oil dirt cleaning and separating functions are integrated, and the efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of oily wastewater treatment devices, and in particular to an oily wastewater recovery and separation device. Background Art

[0002] With the operation and maintenance of the hydropower station, the equipment, pipelines, mechanical devices, etc. in the corridor are often contaminated by oil, resulting in the accumulation of oily wastewater. Oily wastewater contains a mixture of oil and water. Due to the strong adhesion and low density of oil, it is easy to form oil film or oil droplets in the water. These pollutants not only have adverse effects on the operation of hydropower station equipment, but also may cause potential harm to the environment. Therefore, how to efficiently recover and separate the oil in oily wastewater has become a key issue that needs to be solved in the operation of hydropower stations.

[0003] At present, the cleaning and separation of oily wastewater generally uses a special oil-water separation device. However, the existing oil-water separation technology mainly focuses on the physical or chemical separation of oil and water, and most separation devices cannot fully function in the special environment of hydropower stations. On the one hand, the existing oil-water separation equipment and oil cleaning equipment usually work independently, and are used for the collection and separation of oil pollution respectively. The two functions cannot be effectively integrated together, resulting in the need for multiple devices to work together, increasing the complexity of operation and maintenance. On the other hand, in the process of treating oil-water mixtures, the existing separation technology often has low oil-water separation efficiency and poor separation effect due to factors such as unstable oil-water ratio and complex flow state.

[0004] Therefore, how to efficiently and stably clean and separate oily wastewater in the corridor environment of a hydropower station, improve oil recovery efficiency, and reduce environmental pollution has become an important direction of technology research and development. The current technology needs to be improved urgently, especially in terms of integrating oil cleaning and separation functions, improving separation efficiency, and reducing equipment maintenance costs. There are large technical gaps. Summary of the invention

[0005] The purpose of the present invention is to provide an oily wastewater recovery and separation device, which integrates oil cleaning, oil-water separation and oil-water reprocessing, optimizes the workflow of oily wastewater treatment and improves work efficiency.

[0006] In order to solve the above technical problems, the following technical solutions are adopted: The present invention provides an oily wastewater recovery and separation device, comprising an omnidirectional mobile vehicle, characterized in that a multi-stage separation module, a detergent proportioning module and a cleaning module are installed on the omnidirectional mobile vehicle; The multi-stage separation module includes a primary separation box, a cyclone centrifugal separator and an electric flocculation device; The cleaning module comprises a suction device and a cleaning device, wherein the suction device is used to suck sewage from the working surface, and the cleaning device is used to clean the working surface; The detergent proportioning module is used to uniformly mix detergent and water in a certain proportion, and the mixed detergent and water are delivered to the cleaning device; The sewage sucked by the suction device is first processed by the primary separation box, and then successively processed by the cyclone centrifuge and the electric flocculation device before being discharged.

[0007] Optionally, the interior of the primary separation box is divided into an upper and lower layer structure, the upper layer is separated by a particle collection box and a treatment box, the inner bottom of the particle collection box is provided with a first hole connected to the lower layer, and the inner wall is provided with a sewage inlet; an inclined drainage plate is provided between the treatment box and the lower layer, and the inclined direction is downward away from the particle collection box; The guide plate is provided with a plurality of long openings communicating with the lower layer, the long openings are used to install felt wheels, a motor for driving the felt wheels is provided on the side wall of the collection box, the long openings are linearly arranged at intervals, a separation plate is provided on the side of the long opening, and a second hole communicating with the lower layer is provided on the separation plate; The lower layer is used to receive sewage discharged from the first hole of the particle collection box.

[0008] Optionally, the lower layer is separated by two vertically arranged partitions to form three separation zones, the tops of the three separation zones correspond to a number of the felt wheels and the separation plates, and a buoyancy separator is installed at the bottom of each separation zone. The buoyancy separator is driven by a motor to rotate and generate airflow to ensure that the oil in the sewage is on the surface of the sewage.

[0009] Optionally, the cleaning proportioning module includes a detergent tank for storing detergent, a clean water tank for storing clean water, and a mixing tank for storing a mixed solution, the detergent tank is connected to the mixing tank via a water pump, the clean water tank is connected to the mixing tank via another water pump, and the mixing tank is connected to the cleaning device via a metering pump; An active ion exchange membrane is provided at the inlet where the mixing box is connected to the detergent box, and a controllable electric field is provided on both sides of the active ion exchange membrane, through which the ions in the detergent entering the mixing box are separated or enriched.

[0010] Optionally, the suction device includes a first universal tube and a Y-shaped suction nozzle, and the Y-shaped suction nozzle is installed at the end of the first universal tube. The cleaning device includes a second universal tube and a cleaning nozzle, and the cleaning nozzle is installed at the end of the second universal tube.

[0011] Optionally, the first gimbal tube and the second gimbal tube are both driven by motors and adjust the omnidirectional movement.

[0012] Optionally, the cleaning nozzle is a plate-like structure, one side of which is connected to the second universal tube, and the other end of which is provided with a plurality of holes connected to the second universal tube.

[0013] Optionally, the electro-flocculation device is provided with a water outlet and a water inlet, and the sewage treated by the electro-flocculation device is discharged from the water outlet. The water inlet is connected to the cyclone centrifugal separation device through a transport pipeline. The electro-flocculation device is also provided with a knob for controlling the intensity of the internal electrolytic reaction and a switch button for controlling its start and stop.

[0014] Optionally, the omnidirectional mobile vehicle includes omnidirectional wheels, a chassis and shock-absorbing springs. Two omnidirectional wheels are symmetrically arranged on both sides of the chassis. The chassis includes two chassis plates distributed up and down. The shock-absorbing springs are installed between the two chassis plates. A power supply for providing electrical energy to the device is installed on the lower chassis plate.

[0015] Optionally, a base is further provided on the upper chassis plate, and the base is used to install the cleaning module.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The oily wastewater recovery and separation device provided by the present invention includes a suction device and a cleaning device, which can realize the suction and cleaning of wastewater on the working surface, and is also provided with a multi-stage separation module, and the sucked oily wastewater is discharged after oil-water separation. The present invention integrates the oily wastewater cleaning and separation functions into one, thereby improving efficiency.

[0017] 2. The primary separation box provided in the present invention realizes the preliminary separation of oily wastewater through the felt wheel provided inside. The rolling felt wheel absorbs the oil on the surface of the wastewater and performs preliminary treatment on the oily wastewater. The treated wastewater is discharged into the cyclone centrifugal separator for separation again and finally discharged into the electric flocculation device for treatment and finally discharged. The oil in the wastewater is collected in the device to avoid the influence of the oil in the wastewater on the operation of the hydropower station equipment.

[0018] 3. The suction device and cleaning device provided in the present invention are both connected by a universal tube, which is driven by a motor to achieve omnidirectional adjustment and can be extended into the corridor for cleaning without opening the corridor grille. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the overall structure of the oily wastewater recovery and separation device in the embodiment of the present invention; Figure 2 Schematic diagram of the internal structure of the primary separation box in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the cleaning proportioning module in an embodiment of the present invention; Figure 4is a schematic diagram of the structure of an omnidirectional mobile vehicle in an embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of the cleaning module in an embodiment of the present invention.

[0020] Description of reference numerals: 1. Omnidirectional mobile vehicle; 11. Chassis; 12. Omnidirectional wheels; 13. Base; 14. Shock-absorbing spring; 15. Power supply; 2. Multi-stage separation module; 21. Primary separation box; 211. Felt wheel; 212. Partition; 213. Particle collection box; 214. Separation plate; 215. Drainage plate; 216. Buoyancy separator; 217. Oil-water separation area; 22. Transport pipeline; 23. Cyclone centrifugal separator; 3. Electric flocculation device; 31. Water outlet; 32. Water inlet; 4. Detergent proportioning module; 41. Detergent box; 42. Mixing box; 43. Water pump; 44. Clean water tank; 45. Metering pump; 46. Fixed plate; 5. Cleaning module; 51. First universal tube; 52. Cleaning nozzle; 53. Y-shaped nozzle; 54. Second universal tube. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Example 1

[0022] This embodiment provides an oily wastewater recovery and separation device, comprising an omnidirectional mobile vehicle 1, on which a multi-stage separation module 2, a detergent proportioning module 4 and a surface cleaning module 5 are installed; The multi-stage separation module 2 includes a primary separation box 21, a cyclone centrifugal separator 23 and an electric flocculation device 3; The surface cleaning module 5 includes a suction device and a cleaning device, wherein the suction device is used to suck sewage from the working surface, and the cleaning device is used to clean the working surface; The detergent proportioning module 4 is used to uniformly mix detergent and water in a certain proportion, and the mixed detergent and water are delivered to the cleaning device; The primary separation box 21 , the cyclone centrifugal separator 23 and the electro-flocculation device 3 are connected in sequence using a transport pipeline 22 .

[0023] The sewage sucked by the suction device is firstly processed by the primary separation box 21, and then processed by the cyclone centrifuge and the electric flocculation device 3 respectively before being discharged.

[0024] The oily sewage sucked in by the suction device first passes through the primary separation box 21 to separate the large particles of impurities in the sewage and the oil in the sewage, and then passes through the cyclone centrifugal separator 23 to separate the oil from the sewage again, and finally passes through the electric flocculation device 3 to remove the oil in the sewage through the electric field. The three-level treatment device is used to separate the oil from the sewage, and the oil in the discharged water is treated more thoroughly. A cleaning device is also provided on the omnidirectional mobile vehicle 1, and the cleaning device is connected to the detergent proportioning module 4 to transport the detergent mixed solution to the cleaning device for use, to clean the working surface, and to completely remove the oil on the working surface. Example 2

[0025] This embodiment provides an oily wastewater recovery and separation device based on Embodiment 1, except that: like Figure 1 , Figure 2 As shown, the internal space of the primary separation box 21 is divided into an upper and lower structure. The upper structure is separated by a particle collection box 213 and a treatment box. The particle collection box 213 is arranged at one end, next to a side wall of the upper layer, and is completely isolated from the treatment box by a partition plate. A sewage inlet is arranged at the bottom of one side of the particle collection box 213. The sewage sucked by the suction device enters the particle collection box 213 from the sewage inlet. The bottom of the particle collection box 213 is provided with a plurality of first holes connected to the lower layer. The sewage entering the particle collection box 213 flows into the lower layer from the first holes, and the particles in the sewage remain in the particle collection box 213. The treatment box is separated from the lower layer by an inclined guide plate 215. The inclination angle of the guide plate 215 is downward in the direction away from the particle collection box 213. A long opening is provided on the guide plate 215. The plurality of long openings are arranged linearly in an inclined direction. A separation plate 214 is provided on the side of the long opening. The plurality of separation plates 214 are arranged linearly in an inclined direction. The separation plate 214 is provided with a plurality of second holes connected to the lower layer. A felt wheel 211 is arranged in the long opening, and a motor for driving the felt wheel 211 to rotate is arranged on the upper side wall. A part of the felt wheel 211 is located at the lower layer, and a part of the felt wheel 211 is located at the upper layer.

[0026] The lower layer is the oil-water separation area 217, which is separated by two vertically arranged partitions 212 to form three separation areas. The tops of the three separation areas correspond to a number of felt wheels 211 and separation plates 214. A buoyancy separator 216 is installed at the bottom of each separation area. The buoyancy separator 216 separates the oil in the sewage to the upper surface of the sewage and then separates it through the rotating felt wheel 211.

[0027] The sewage flows from the particle collection box 213 into the separation area below the particle collection box 213. The rotating felt wheel 211 will absorb the oil on the surface of the sewage, and at the same time, it will carry the sewage. After the sewage leaves the felt wheel 211, it falls on the drain plate 215. Since the drain plate 215 is in an inclined state, the sewage stays in the next separation area and flows into the next separation from the second hole on the separation plate 214 until the sewage is transported to the last separation area and flows into the cyclone centrifugal separator 23 for treatment. The cyclone centrifugal separator 23 with model YWX-250 can be selected.

[0028] The electric flocculation device 3 is provided with a water outlet 31 and a water inlet 32. The sewage treated by the electric flocculation device 3 is discharged from the water outlet 31. The water inlet 32 ​​is connected to the cyclone centrifugal separation device through a transport pipe 22. The sewage treated by the cyclone centrifugal separation device is transported to the electric flocculation device 3 for sewage separation treatment again. The electric flocculation separation device removes oil stains in the sewage through the action of an electric field. The electric flocculation device 3 is also provided with a knob for controlling the intensity of its internal electrolytic reaction and a switch button for controlling its start and stop. The electric flocculation device 3 of model DHX-01 can be selected, and the electric flocculation device is installed at the rear end of the omnidirectional mobile vehicle.

[0029] The oil in the sewage is initially separated by a plurality of felt wheels 211 on the primary separation module, and then enters the cyclone centrifugal separator 23 for treatment, thereby reducing the workload of the cyclone centrifugal separator 23 .

[0030] like Figure 1 , Figure 3 As shown, the detergent proportioning module 4 includes a detergent tank 41, a clean water tank 44, a mixing tank 42, two water pumps 43 and a metering pump 45. The detergent tank 41 stores detergent, the clean water tank 44 stores clean water, the clean water tank 44 and the detergent tank 41 are connected to the mixing tank 42 through the water pump 43 respectively, the clean water and the detergent are mixed in the mixing tank 42, the mixing tank 42 is connected to the cleaning device through the metering pump 45, the mixed liquid in the mixing tank 42 is transported to the cleaning device through the metering pump 45, and is sprayed from the cleaning device to act on the working surface for cleaning.

[0031] An active ion exchange membrane is provided at the inlet where the mixing box 42 is connected to the cleaning box. A controllable electric field is provided on both sides of the active ion exchange membrane. By controlling the direction and magnitude of the electric field, the ions in the detergent can selectively pass through, and the detergent ions can be separated or enriched. By changing the magnitude of the electric field intensity, the migration rate of the ions in the detergent is adjusted, thereby adjusting the ratio of water to detergent.

[0032] The detergent box 41 and the two water pumps 43 are mounted on a fixing plate 46 to prevent leakage of detergent in the detergent box 41 during use. The fixing plate 46 is mounted on the omnidirectional mobile vehicle 1 .

[0033] like Figure 1 , Figure 5 As shown, the suction device includes a first universal tube 51 and a Y-shaped suction nozzle 53, and the Y-shaped suction nozzle 53 is installed at the end of the first universal tube 51. The cleaning device includes a second universal tube 54 and a cleaning nozzle 52, and the cleaning nozzle 52 is installed at the end of the second universal tube 54. The first universal tube 51 and the second universal tube 54 are driven by a motor and adjust the omnidirectional movement. The device at the end of the universal tube is suspended at any position for use. The middle channel on the Y-shaped suction nozzle 53 is the main channel for sucking oil stains, and the branch channels on both sides are used for the diversion and guiding of the fluid. The cleaning nozzle 52 is a plate-like structure, one side is connected to the second universal tube 54, and the other side is provided with a plurality of holes connected to the second universal tube 54. The other end of the second universal tube 54 is connected to the mixing box 42 through a metering pump 45, and the detergent mixture in the mixing box 42 is transported to the cleaning nozzle 52 through the metering pump 45 and sprayed out. The plate-shaped cleaning nozzle 52 can clean a large area of ​​the working surface, and the metering pump 45 can accurately spray the cleaning agent mixture. The amount of the cleaning agent mixture can be adjusted according to the working surfaces in different environments. The metering pump 45 of the LK-55VH model can be selected.

[0034] For cleaning work in the corridor of the hydropower station, the first universal tube 51 and the second universal tube 54 can enter the corridor for cleaning without opening the corridor grille, thereby improving the adaptability of the device.

[0035] like Figure 1 , Figure 4 As shown, the omnidirectional mobile vehicle 1 includes a chassis 11, omnidirectional wheels 12 and shock-absorbing springs 14. Two omnidirectional wheels 12 are symmetrically arranged on both sides of the chassis 11. The chassis 11 includes two chassis plates distributed up and down. A shock-absorbing spring 14 is installed between the two chassis plates. A power supply 15 for providing electrical energy to the device is provided on the lower chassis plate, and a base 13 for installing a cleaning module 5 is provided on the upper chassis plate.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An oily wastewater recovery and separation device, comprising an omnidirectional mobile vehicle, characterized in that: The omnidirectional mobile vehicle is equipped with a multi-stage separation module, a detergent proportioning module and a cleaning module; The multi-stage separation module includes a primary separation box, a cyclone centrifugal separator and an electric flocculation device; The cleaning module comprises a suction device and a cleaning device, wherein the suction device is used to suck sewage from the working surface, and the cleaning device is used to clean the working surface; The detergent proportioning module is used to uniformly mix detergent and water in a certain proportion, and the mixed detergent and water are delivered to the cleaning device; The sewage sucked by the suction device is first processed by the primary separation box, and then successively processed by the cyclone centrifuge and the electric flocculation device before being discharged.

2. The oily wastewater recovery and separation device according to claim 1 is characterized in that: The primary separation box is internally divided into an upper and lower structure, the upper layer is separated by a particle collection box and a treatment box, the inner bottom of the particle collection box is provided with a first hole connected to the lower layer, and the inner wall is provided with a sewage inlet; an inclined drainage plate is provided between the treatment box and the lower layer, and the inclined direction is downward away from the particle collection box; The guide plate is provided with a plurality of long openings communicating with the lower layer, the long openings are used to install felt wheels, a motor for driving the felt wheels is provided on the side wall of the collection box, the long openings are linearly arranged at intervals, a separation plate is provided on the side of the long opening, and a second hole communicating with the lower layer is provided on the separation plate; The lower layer is used to receive sewage discharged from the first hole of the particle collection box.

3. The oily wastewater recovery and separation device according to claim 2 is characterized in that: The lower layer is separated by two vertically arranged partitions to form three separation zones. The tops of the three separation zones correspond to a number of the felt wheels and the separation plates. A buoyancy separator is installed at the bottom of each separation zone. The buoyancy separator is driven by a motor to rotate and generate airflow to ensure that the oil in the sewage is on the surface of the sewage.

4. The oily wastewater recovery and separation device according to claim 1 is characterized in that: The cleaning proportioning module includes a detergent tank for storing detergent, a clean water tank for storing clean water, and a mixing tank for storing a mixed solution, the detergent tank is connected to the mixing tank via a water pump, the clean water tank is connected to the mixing tank via another water pump, and the mixing tank is connected to the cleaning device via a metering pump; An active ion exchange membrane is provided at the inlet where the mixing box is connected to the detergent box, and a controllable electric field is provided on both sides of the active ion exchange membrane, through which the ions in the detergent entering the mixing box are separated or enriched.

5. The oily wastewater recovery and separation device according to claim 1 is characterized in that: The suction device comprises a first universal tube and a Y-shaped suction nozzle, wherein the Y-shaped suction nozzle is installed at the end of the first universal tube; the cleaning device comprises a second universal tube and a cleaning nozzle, wherein the cleaning nozzle is installed at the end of the second universal tube.

6. The oily wastewater recovery and separation device according to claim 5 is characterized in that: The first universal tube and the second universal tube are both driven by motors and adjust the omnidirectional movement.

7. The oily wastewater recovery and separation device according to claim 5 is characterized in that: The cleaning nozzle is a plate-like structure, one side of which is connected to the second universal tube, and the other end of which is provided with a plurality of holes connected to the second universal tube.

8. The oily wastewater recovery and separation device according to claim 1 is characterized in that: The electro-flocculation device is provided with a water outlet and a water inlet. The sewage treated by the electro-flocculation device is discharged from the water outlet. The water inlet is connected to the cyclone centrifugal separation device through a transport pipeline. The electro-flocculation device is also provided with a knob for controlling the intensity of the internal electrolytic reaction and a switch button for controlling the start and stop of the electro-flocculation device.

9. The oily wastewater recovery and separation device according to claim 1, characterized in that: The omnidirectional mobile vehicle includes omnidirectional wheels, a chassis and shock-absorbing springs. Two omnidirectional wheels are symmetrically arranged on both sides of the chassis. The chassis includes two chassis plates distributed up and down. The shock-absorbing springs are installed between the two chassis plates. A power supply for providing electrical energy to the device is installed on the lower chassis plate.

10. The oily wastewater recovery and separation device according to claim 9, characterized in that: A base is also provided on the upper chassis plate, and the base is used to install the cleaning module.

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