Oil-containing emulsion wastewater treatment device

Abstract

The utility model discloses oil-containing emulsion wastewater treatment device belongs to wastewater treatment field. Including preliminary treatment component, fine treatment component is set up in one side of preliminary treatment component, and fine treatment component includes the electrolytic demulsification pool of setting up in preliminary treatment pool body one side, and the top of electrolytic demulsification pool is covered with cover plate no. 2, demulsification component is set up on cover plate no. 2, and demulsification component includes the demulsification part for realizing electrolytic demulsification function of setting up in electrolytic demulsification pool, and the support part is installed on cover plate no. 2, and the adjusting part for the flexible adjustment demulsification part position is installed on the support part, and the locking part is arranged between adjusting part and demulsification part. The oil-containing emulsion wastewater treatment device of the application, through the support part of demulsification component, adjusting part and locking part joint action, solved the inconvenient maintenance problem of metal electrode. The support part provides stable foundation, and the adjusting part can flexibly adjust the position, and the locking part realizes quick dismounting, and can complete electrode adjustment, cleaning or replacement without emptying wastewater.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a device for treating oily emulsion wastewater. Background Technology

[0002] Oily emulsion wastewater mainly originates from industrial sectors such as machining, metal rolling, and automobile manufacturing. It is a stable dispersion system composed of an oil phase, an aqueous phase, and an emulsifier. This type of wastewater is characterized by its complex composition, high degree of emulsification, high COD (chemical oxygen demand) value, and difficulty in naturally separating the oil. Direct discharge of this wastewater will severely pollute aquatic environments, disrupt the ecological balance, and waste oil resources. Currently, treatment methods for oily emulsion wastewater mainly include physical methods, chemical methods, physicochemical methods, and biological methods.

[0003] For example, the oil-containing emulsion wastewater treatment device with easy demulsification, disclosed in CN222400498U, includes a primary treatment tank, an electrolytic demulsification tank, connecting pipe fittings, a filter element, and a stirring mechanism, which facilitates the demulsification treatment of wastewater. The connecting pipe fittings connect the primary treatment tank and the electrolytic demulsification tank, guide the wastewater, and filter out particulate sediment.

[0004] In practical use, the above-mentioned scheme, while installing the metal electrodes inside the electrolytic demulsification tank, does not specify a concrete method of fixation. Traditional fixed installation presents maintenance limitations. After prolonged operation, the electrodes are prone to surface contamination due to electrolytic reactions, such as metal hydroxide precipitation and oil buildup. Continuous electrolysis can also cause wear and tear, leading to thinning of the electrode plates and localized corrosion, requiring periodic disassembly for cleaning or replacement. Furthermore, because the electrodes are rigidly connected to the tank, the wastewater in the electrolytic demulsification tank must be completely drained before operation can begin, further increasing maintenance complexity. Therefore, a wastewater treatment device for oily emulsions is needed.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] This utility model provides an oil-containing emulsion wastewater treatment device to solve the problems of traditional fixed metal electrodes, which require replacement due to dirt accumulation or wear after long-term use, and the need to drain wastewater due to rigid connection with the tank body, thus increasing maintenance complexity.

[0007] This utility model embodiment adopts the following technical solution: an oil-containing emulsion wastewater treatment device. It mainly includes a pretreatment component for temporarily storing oil-containing emulsion wastewater, achieving initial demulsification through the addition of a demulsifier and mixing; a fine treatment component disposed on one side of the pretreatment component, comprising an electrolytic demulsification tank disposed on one side of the pretreatment tank, the top of which is covered by a second cover plate; and a demulsification component disposed on the second cover plate, comprising a demulsification part disposed within the electrolytic demulsification tank for achieving electrolytic demulsification, a support part for supporting the entire component's basic structure mounted on the second cover plate, an adjustment part for flexibly adjusting the position of the demulsification part mounted on the support part, and a locking part between the adjustment part and the demulsification part.

[0008] Furthermore, the support includes a support frame installed on the upper surface of the cover plate 2. The support frame is made of high-strength metal profiles and has two sets of vertically extending support rods, which are parallel and symmetrically distributed.

[0009] Furthermore, the adjustment unit includes a side panel installed horizontally between two sets of support rods. The side panel is perpendicular to the two sets of support rods. A mounting sleeve is fixed to the side of the side panel. The mounting sleeve is hollow cylindrical with crossbars extending outward on both sides. The crossbars are horizontal and a screw is fixed on the crossbars. A support rod is slidably disposed through the mounting sleeve. The support rod can slide along the axial direction of the mounting sleeve. A gripping disc is welded to one end of the support rod. Side rods are symmetrically arranged on both sides of the gripping disc. The side rods are structural components that cooperate with the screws. A through hole is opened on the side rods.

[0010] Furthermore, initially, the through hole of the side rod is sleeved on the screw rod, and one end of the screw rod is threaded with a nut. After the nut is tightened, it fits against the upper surface of the side rod.

[0011] Furthermore, the demulsification section includes two sets of limiting seats mounted on two sets of support rods. A vertical conduit is fixed between the two sets of vertical limiting seats. A cable is threaded through the conduit. An auxiliary frame is fixed to one end of the support rod. A metal electrode is inserted into the lower end of the conduit through a sealing ring. The metal electrode extends into the wastewater in the electrolytic demulsification tank.

[0012] Furthermore, the locking part consists of a first clamping ring and a second clamping ring. The first clamping ring and the second clamping ring are hinged to each other through a hinge shaft and can be opened and closed to hold the metal electrode and the conduit.

[0013] Furthermore, one end of the second clamping ring is movably connected to a rotating shaft, and a notch is provided at the corresponding position of the first clamping ring. The exposed end of the rotating shaft is threadedly connected to a wing nut, and the wing nut is tightened to fit against the surface of the first clamping ring.

[0014] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0015] This oil-containing emulsion wastewater treatment device effectively solves the problem of inconvenient metal electrode maintenance through the coordinated design of the support, adjustment, and locking parts in the demulsification assembly. The support provides a stable installation foundation for the demulsification unit, the adjustment part allows for flexible adjustment of the demulsification unit's position within the electrolytic demulsification tank, and the locking part enables quick assembly and disassembly of the demulsification unit. Compared to traditional fixed installations, electrode position adjustment, cleaning, or replacement can be completed without emptying the wastewater from the electrolytic demulsification tank, avoiding maintenance limitations caused by rigid connections and reducing the operational complexity of cleaning and replacing electrode surface contaminants. Simultaneously, the cooperation between the pretreatment and fine treatment components ensures the continuity and effectiveness of oil-containing emulsion wastewater treatment. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 This is an overall schematic diagram of the oil-containing emulsion wastewater treatment device in this application;

[0019] Figure 2 for Figure 1 A partial sectional view;

[0020] Figure 3 for Figure 1 A schematic diagram of a partial structure;

[0021] Figure 4 for Figure 3 Enlarged view of point A;

[0022] Figure label:

[0023] 1. Pre-treatment assembly; 11. Pre-treatment tank body; 12. Cover plate one; 13. Support; 14. Motor; 15. Stirring blade; 16. Down drain pipe one; 17. Wastewater pipe; 18. Demulsifier conduit; 19. Connecting pipe; 110. Valve; 2. Fine treatment assembly; 21. Electrolytic demulsification tank; 22. Down drain pipe two; 23. Cover plate two; 231. Opening slot; 3. Demulsification assembly; 31. Support frame; 32. Conduit; 33. Limiting seat; 34. Horizontal frame; 35. Side panel; 37. Mounting sleeve; 372. Screw; 38. Support rod; 39. Holding plate; 310. Side rod; 311. Nut; 312. Metal electrode; 313. Auxiliary frame; 314. Clamping ring one; 315. Clamping ring two; 316. Rotating shaft; 317. Wing nut. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1-4 As shown, the oil-containing emulsion wastewater treatment device provided in this embodiment of the present invention includes a pretreatment component 1, which includes a pretreatment tank 11. The pretreatment tank 11 has a vertical cylindrical structure with a conical hopper design at the bottom and an open top. A suitable cover plate 12 is fitted on the top of the pretreatment tank 11. The cover plate 12 serves to seal the tank, prevent wastewater from splashing out and odor from escaping. A drain pipe 16 is connected to the lowest point of the conical hopper at the bottom of the pretreatment tank 11 for discharging precipitated impurities. A wastewater pipe 17 is connected to the upper part of the pretreatment tank 11 as an inlet channel for the oil-containing emulsion wastewater. A demulsifier conduit 18 is connected to the cover plate 12 for adding demulsifier into the pretreatment tank 11 to assist in subsequent demulsification treatment.

[0027] Meanwhile, a stirring part is provided on the cover plate 12. The stirring part includes a bracket 13 fixedly installed on the cover plate 12. The bracket 13 is a frame structure, and a motor 14 is fixedly installed on the bracket 13. The output end of the motor 14 extends vertically downward into the primary treatment tank 11. The part of the motor 14 that extends into the tank body and the cover plate 12 are sealed to prevent wastewater leakage. The end of the output shaft is connected to a stirring blade 15 through a coupling. The stirring blade 15 is located in the internal space of the primary treatment tank 11. When the motor 14 is running, it can drive the stirring blade 15 to rotate, thereby stirring the mixture of wastewater and demulsifier in the tank and promoting the full contact and reaction between the demulsifier and the wastewater.

[0028] Furthermore, a fine treatment component 2 is provided on one side of the primary treatment tank 11. This fine treatment component 2 includes an electrolytic demulsifier 21 located on one side of the primary treatment tank 11. The electrolytic demulsifier 21 is also a vertical cylindrical structure, adapted to the structural layout of the primary treatment tank 11. The electrolytic demulsifier 21 is connected to the primary treatment tank 11 via a connecting pipe 19. Both ends of the connecting pipe 19 are connected to the lower side walls of the primary treatment tank 11 and the electrolytic demulsifier 21, respectively, for conveying the pretreated wastewater into the electrolytic demulsifier 21. A valve 110 is connected to the middle section of the connecting pipe 19 via a flange. The valve 110 can control the flow of wastewater in the connecting pipe 19, facilitating equipment maintenance and debugging.

[0029] Meanwhile, a filter screen (not shown in the figure) is installed at the connection between valve 110 and the two-end connecting pipe 19. The filter screen can perform secondary filtration on the wastewater flowing out of the primary treatment tank 11, intercept any possible residual solid impurities, and prevent them from entering the electrolytic demulsification tank 21 and affecting the subsequent electrolytic demulsification process.

[0030] At the bottom of the electrolytic demulsification tank 21, corresponding to the lowest point of its conical hopper, is a second drain pipe 22. The function of the second drain pipe 22 is similar to that of the first drain pipe 16 of the pretreatment tank 11, used to discharge impurities and electrolysis products precipitated in the electrolytic demulsification tank 21, ensuring the cleanliness of the tank interior. Furthermore, a second cover plate 23 is placed on top of the electrolytic demulsification tank 21, forming a seal. This seal prevents wastewater from splashing out and odors from escaping during electrolysis, and also provides a mounting base for electrolytic electrodes, detection components, etc., that may be installed above the tank, maintaining the stability of the electrolytic demulsification environment.

[0031] Furthermore, a demulsifying assembly 3 is provided on the cover plate 23. Based on the support of the cover plate 23, the demulsifying assembly 3 can realize the installation and convenient adjustment of the metal electrode. The demulsifying assembly 3 includes a support part installed on the cover plate 23. The support part serves as the basic structure of the entire assembly. The support part includes a support frame 31 fixedly installed on the upper surface of the cover plate 23. The support frame 31 is made of high-strength metal profiles and has two sets of vertically extending support rods (not shown separately in the figure, which are the vertical structural components of the support frame 31). The two sets of support rods are parallel and symmetrically distributed, providing installation support for the subsequent adjustment part and demulsifying part.

[0032] An adjustment mechanism is fixedly installed between two sets of support rods to flexibly adjust the position of the demulsifying section. The adjustment mechanism includes a horizontally mounted side panel 35 fixed between the two sets of support rods. The side panel 35 is perpendicular to the two sets of support rods. A mounting sleeve 37 is fixed to the side of the side panel 35 by welding or other means. The mounting sleeve 37 is a hollow cylinder with horizontal crossbeams 34 extending outwards from both sides. The crossbeams 34 are horizontal, and screws 372 are fixed to the crossbeams 34 by welding. Simultaneously, a support rod 38 is slidably mounted through the mounting sleeve 37. The support rod 38 can slide along the axial direction of the mounting sleeve 37, and a gripping disc 39 is welded to one end (for easy manual pushing and pulling). Side rods 310 are symmetrically arranged on both sides of the gripping disc 39. The side rods 310 are structural components that cooperate with the screws 372, and a through hole (not shown in the figure) is opened on the side rods 310.

[0033] Initially, the through hole of the side rod 310 is sleeved on the screw rod 372. One end of the screw rod 372 is threadedly connected to the nut 311. After the nut 311 is tightened, it fits against the upper surface of the side rod 310. The position of the support rod 38 is fixed by the thread locking force between the nut 311 and the screw rod 372, thereby realizing the position adjustment and locking of the demulsification part.

[0034] A demulsifying section extends from one end of the support rod 38 to achieve electrolytic demulsification. An opening slot 231 for the demulsifying section to pass through is provided on the cover plate 23. The demulsifying section is structured as follows: two sets of support rods are used, with two sets of limiting seats 33 fixedly installed at corresponding heights. A vertical conduit 32 is fixed between the two sets of vertical limiting seats 33, clamping and limiting the vertical conduit 32. A cable (for supplying power to the metal electrode) is threaded inside the conduit 32. Simultaneously, an auxiliary frame 313 is welded to one end of the support rod 38. A metal electrode 312 is inserted into the lower end of the conduit 32 via a sealing ring (not separately shown in the figure, serving a sealing and waterproofing function). The metal electrode 312 extends into the wastewater in the electrolytic demulsification tank 21, promoting the demulsification of the oil-containing emulsion through electrolysis.

[0035] To prevent the metal electrode 312 from detaching from the conduit 32, a locking part is provided at the connection between the metal electrode 312 and the conduit 32. This locking part consists of a first clamping ring 314 and a second clamping ring 315, which are hinged together by a hinge shaft and can be opened and closed to hold the metal electrode 312 at the connection between the conduit 32 and the metal electrode 312. A rotating shaft 316 is movably connected to one end of the second clamping ring 315, and a notch (not shown in the figure) is provided at a corresponding position on the first clamping ring 314 to accommodate the rotating shaft 316. After clamping rings 314 and 315 are closed and engaged, one end of the rotating shaft 316 is pushed through the notch, and a wing nut 317 is threaded onto the exposed end of the rotating shaft 316 (the wing nut 317 is easy to tighten manually without tools). After the wing nut 317 is tightened, it fits against the surface of clamping ring 314. Through the holding force of the clamping rings and the locking force of the nut, the metal electrode 312 is stably locked at the end of the tube 32. Clamping rings 314, 315, the rotating shaft 316, and the wing nut 317 are all made of stainless steel, which has the characteristics of being resistant to wastewater corrosion, ensuring long-term stable use.

[0036] Working principle: The treatment process for oily emulsion wastewater begins with the pretreatment stage. The wastewater to be treated is introduced into the pretreatment tank 11 through the wastewater pipe 17, while a demulsifier is added to the tank through the demulsifier conduit 18. The motor 14 is started to drive the stirring blades 15 to rotate, so that the wastewater and the demulsifier are fully mixed. The chemical action of the demulsifier breaks down the stability of the emulsion, promoting the initial separation of oil and water. The solid impurities formed settle at the bottom of the conical hopper and can be periodically discharged through the drain pipe 16. The pretreated wastewater is temporarily stored in the pretreatment tank 11 for subsequent treatment.

[0037] After pretreatment, valve 110 on connecting pipe 19 is opened, and wastewater is transported to electrolytic demulsification tank 21 through connecting pipe 19. When flowing through valve 110, the filter screen at the connection point performs secondary filtration of the wastewater, intercepting residual solid impurities. At this time, demulsification component 3 starts to work, and the cable in conduit 32 supplies power to metal electrode 312. Metal electrode 312 generates an electrolytic reaction in the wastewater of electrolytic demulsification tank 21. Through electrolysis, the emulsion structure is further destroyed, and the oil and water are completely separated. The precipitates generated during electrolysis are deposited at the bottom of electrolytic demulsification tank 21 under the action of gravity and can be discharged through drain pipe 22.

[0038] When the position of the metal electrode 312 needs to be adjusted, loosen the nut 311, push the gripping disc 39 to drive the support rod 38 to slide along the mounting sleeve 37, thereby adjusting the depth of the metal electrode 312 in the wastewater. After adjustment, tighten the nut 311 to fix the position. If the metal electrode 312 needs to be replaced or cleaned, loosen the wing nut 317 to disengage the rotating shaft 316 from the notch of the clamping ring 314, open the clamping ring 314 and the clamping ring 315, and the metal electrode 312 can be removed from the conduit 32. After the operation is completed, install and fix it in the reverse order to ensure stable operation of the electrode. Through the combined action of pretreatment and electrolytic demulsification, the treatment of oily emulsion wastewater is achieved.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An apparatus for treating oil-in-water emulsion wastewater, characterized by: include The pretreatment component (1) is used to temporarily store oily emulsion wastewater so as to achieve preliminary demulsification by adding demulsifier and stirring. Fine treatment component (2) is disposed on one side of the primary treatment component (1). The fine treatment component (2) includes an electrolytic demulsification tank (21) disposed on one side of the primary treatment tank body (11). The top of the electrolytic demulsification tank (21) is covered by a cover plate two (23). The demulsification assembly (3) is disposed on the cover plate 2 (23). The demulsification assembly (3) includes a demulsification part disposed in the electrolytic demulsification tank (21) for realizing the electrolytic demulsification function. A support part for supporting the basic structure of the entire assembly is installed on the cover plate 2 (23). An adjustment part for flexibly adjusting the position of the demulsification part is installed on the support part. A locking part is provided between the adjustment part and the demulsification part.

2. The oil-containing emulsion wastewater treatment device according to claim 1, characterized by: The support includes a support frame (31) installed on the upper surface of the cover plate (23). The support frame (31) is made of high-strength metal profiles and has two sets of vertically extending support rods. The two sets of support rods are parallel and symmetrically distributed.

3. The oil-containing emulsion wastewater treatment device according to claim 1, characterized by: The adjustment unit includes a side panel (35) installed horizontally between two sets of support rods. The side panel (35) is perpendicular to the two sets of support rods. A mounting sleeve (37) is fixed on the side of the side panel (35). The mounting sleeve (37) is hollow cylindrical and has crossbars (34) extending outward on both sides. The crossbars (34) are horizontal. A screw (372) is fixed on the crossbars (34). A support rod (38) is slidably arranged through the mounting sleeve (37). The support rod (38) can slide along the axial direction of the mounting sleeve (37). A gripping plate (39) is welded to one end of the support rod (38). Side rods (310) are symmetrically arranged on both sides of the gripping plate (39). The side rods (310) are structural components that cooperate with the screw (372). A through hole is opened on the side rods (310).

4. The oil-in-water emulsion wastewater treatment apparatus according to claim 3, characterized by: Initially, the through hole of the side rod (310) is sleeved on the screw rod (372), and a nut (311) is threaded to one end of the screw rod (372). After the nut (311) is tightened, it fits against the upper surface of the side rod (310).

5. The oil-in-water emulsion wastewater treatment apparatus according to claim 4, characterized by: The demulsification section includes two sets of limiting seats (33) installed on two sets of support rods. A vertical conduit (32) is fixed between the two sets of limiting seats (33) in a vertical state. A cable is threaded through the conduit (32). An auxiliary frame (313) is fixed to one end of the support rod (38). A metal electrode (312) is inserted into the lower end of the conduit (32) through a sealing ring. The metal electrode (312) extends into the wastewater in the electrolytic demulsification tank (21).

6. The oil-in-water emulsion wastewater treatment apparatus according to claim 5, characterized by: The locking part consists of a first clamping ring (314) and a second clamping ring (315). The first clamping ring (314) and the second clamping ring (315) are hinged to each other through a hinge shaft and can be opened and closed to hold the metal electrode (312) and the conduit (32) at the connection point.

7. An oil-in-water emulsion wastewater treatment apparatus according to claim 6, characterised in that: One end of the second clamping ring (315) is movably connected to a rotating shaft (316), and a notch is provided at the corresponding position of the first clamping ring (314). The exposed end of the rotating shaft (316) is threadedly connected to a wing nut (317), and the wing nut (317) is tightened and fits against the surface of the first clamping ring (314).

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