A device and method for treating high salinity industrial wastewater

Abstract

The application relates to the technical field of wastewater treatment, in particular to a high-salinity industrial wastewater treatment device and method. The device comprises a rotating support, both ends of which are rotationally connected with rotating tanks; a waste discharge component is arranged in the rotating tank; a scraper component is arranged above the waste discharge component; a condensate water collecting component is arranged below the waste discharge component and comprises a blocking plate, a multilayer corrugated condensing pipe arranged below the blocking plate, a condensate outlet pipe connected with the multilayer corrugated condensing pipe; a synchronous driving component is arranged at one end of the rotating support, and the synchronous driving component is used for synchronous movement of the rotating tank and the waste discharge component. The waste discharge component sends out the crystallized salt through the conveying belt assembly, so that the efficiency is improved without shutdown cleaning; the arc-shaped design of the scraper component is matched with the inner wall of the tank body, the crystallization is scraped in real time, the limiting plate prevents back splash, the multilayer corrugated condensing pipe in the condensate water collecting component can increase the condensing area, the flow guide groove helps collect and discharge the condensate water, and the recovery efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a device and method for treating high-salinity industrial wastewater. Background Technology

[0002] A lot of wastewater is generated in industrial production in factories. If the wastewater has a high salt content, it will inhibit and poison microorganisms in nature after being discharged. Therefore, wastewater is usually treated first before being discharged.

[0003] Currently, the main methods for treating high-salinity wastewater are membrane treatment and evaporation. When using evaporation to treat high-salinity wastewater, the salt in the wastewater will precipitate at the bottom of the device and adhere to the inner wall as the water evaporates. Once the salt crystals adhere, it is difficult for other salt crystals to adhere to the same location. At the same time, the adhesion area of ​​the salt crystals is limited, which makes the efficiency of salt precipitation from high-salinity wastewater low.

[0004] The applicant discovered that existing equipment mostly uses a lifting plate mechanical scraping structure to clean salt crystals, but this requires intermittent operation. Specific problems are as follows:

[0005] First, the formation of a physical barrier after crystallization reduces heat transfer efficiency, requiring frequent temperature increases to maintain the evaporation rate, significantly increasing energy consumption. Second, the scraper needs to be shut down periodically to clean the crystallized layer, causing interruptions in the processing flow and preventing continuous production. More importantly, the crystallized salt removed by the scraper is concentrated at the bottom or in specific areas, and the lack of a dynamic salt discharge channel for timely removal necessitates manual intervention, affecting subsequent evaporation processes and continuous operation. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for treating high-salinity industrial wastewater, in order to solve the problem mentioned in the background art that the existing high-salinity wastewater treatment methods are simple and fail to remove crystalline salts in a timely manner, and can achieve real-time removal of crystals and maintain continuous operation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a treatment device for high-salinity industrial wastewater, comprising:

[0008] A rotating support frame with rotating tanks rotatably connected to both ends provides a rotating support platform and enables the rotating tanks to rotate dynamically.

[0009] The waste discharge component is located inside the rotary tank and is used to directionally transport the solid crystalline salt separated inside the rotary tank outward.

[0010] The scraper component, located above the waste discharge component, is used to scrape off the crystals adhering to the inner wall of the rotating tank in real time;

[0011] A condensate collection component, located below the waste discharge component, includes a baffle plate, a multi-layer corrugated condenser pipe located below the baffle plate, and a condensate outlet pipe connected to the multi-layer corrugated condenser pipe, for recycling condensate during the treatment process.

[0012] A synchronous drive component is disposed at one end of the rotating support. The synchronous drive component is used to simultaneously rotate the tank and the waste discharge component for synchronous movement.

[0013] Preferably, the rotary tank is composed of two symmetrical cones to form a bidirectional material flow space, expand the contact area, heat evenly, accelerate evaporation, and improve the efficiency of crystallized salt separation.

[0014] Preferably, the scraper is fitted to the inner wall of the rotating tank and has an arc shape that matches the shape of the inner wall of the rotating tank, so as to achieve full circumferential coverage scraping of the inner wall of the tank.

[0015] Preferably, the waste discharge component includes a conveyor belt assembly that runs through the axis of the inner cavity of the rotating tank. The conveyor belt assembly includes several sets of conveyor rollers arranged above the baffle plate and a drive roller connected to one end of the rotating support. The outer sides of the conveyor rollers and the drive rollers are fitted with a conveyor belt for connecting them, in order to construct a continuous crystallization salt conveying channel.

[0016] Preferably, the synchronous drive component includes a driven wheel disposed on the outer side of one end of the rotating tank, and a drive motor disposed on the same end and connected to the rotating support. The output end of the drive motor passes through the rotating support and is provided with a driving wheel. A drive belt is sleeved on the outer side of the driving wheel and the driven wheel.

[0017] Preferably, a first drive gear is provided on the outer side of one end of the rotating tank, and a second drive gear is provided on one end of the drive roller. The first drive gear and the second drive gear mesh with each other to achieve precise speed matching between the rotating tank and the conveyor belt assembly.

[0018] Preferably, a limiting plate is symmetrically provided below the scraper to prevent crystalline salt particles from splashing back during the scraping process.

[0019] Preferably, the lower edge of the barrier plate is provided with a guide groove, which is connected to the condensate outlet pipe to guide the condensate to collect and be output in a directional manner.

[0020] Preferably, one end of the rotating tank is also provided with a water inlet pipe, which is connected to the rotating support to achieve stable liquid inlet during dynamic rotation.

[0021] A method for using a device for treating high-salinity industrial wastewater includes the following steps:

[0022] S1. Wastewater Injection: High-salt wastewater is injected into the inner cavity of the double-cone rotating tank through the rotating tank inlet pipe; the bottom of the rotating tank is heated by a heating device;

[0023] S2. Rotary drive: Start the synchronous drive component, drive the drive motor to drive the drive wheel to rotate, drive the driven wheel to rotate via the drive belt, drive the rotating tank to rotate, and at the same time drive the first drive gear and the second drive gear to mesh and drive the conveyor belt assembly to rotate.

[0024] S3. Dynamic scraping: Under the action of centrifugal force, salt crystals adhere to the inner wall of the rotating tank. When the rotating tank moves to the scraper, it continuously scrapes off the salt crystals on the inner wall.

[0025] S4. Waste Discharge and Conveying: The scraped salt crystals are guided by the limiting plate to the conveyor belt assembly and carried out to the outside of the rotating tank for centralized collection. The solid salt and liquid wastewater are separated by the baffle plate.

[0026] S5. Condensation recovery: Liquid wastewater is converted into steam and rises to contact the multi-layer corrugated condenser tube to complete steam condensation. The condensate is discharged through the guide channel and the outlet pipe to be collected outside the rotating tank.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] In this invention, continuous processing is achieved through the synergistic effect of centrifugal force-induced crystallization and mechanical dynamic scraping: The rotating tank adopts a double-cone structure, and the heating device at the bottom can be configured to use multiple heating methods such as electromagnetic heating, steam heating, water bath heating, and heat transfer oil heating, achieving efficient adaptation of various heating devices to different application scenarios and improving equipment compatibility and operating condition adaptability. The double-cone structure can increase the evaporation area and prevent boiling over. The centrifugal force generated by rotation can form a liquid film, increasing the surface area, and the rotation can heat evenly and accelerate evaporation. The rotating tank rotates under the drive of the drive component, forming a gradient centrifugal force field, which forces the salt to precipitate in a directional manner and adhere to the inner wall area. The arc-shaped scraper moves synchronously with the tank body, scraping off the salt crystals in real time and guiding them to the conveyor belt assembly. Through the transmission of the first drive gear and the second drive gear, it is ensured that the waste discharge component operates synchronously with the tank body, continuously transporting the salt crystals to the outside of the rotating tank and collecting them centrally. The condensate is efficiently recovered through multi-layer corrugated condenser pipes and guide channels, and wastewater is continuously injected through the water inlet pipe. The structure is simple and efficient, requiring no manual shutdown operation, achieving continuous operation, and is energy-saving and efficient. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0031] Figure 3This is a schematic diagram of the waste discharge component in this invention;

[0032] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0033] Figure 5 This is a schematic diagram of the condensate collection component in this invention.

[0034] In the diagram: 1. Rotating support; 2. Rotating tank; 3. Conveyor belt assembly; 31. Conveyor roller; 32. Drive roller; 33. Conveyor belt; 4. Scraper; 51. Baffle plate; 52. Multi-layer corrugated condenser tube; 53. Condensate outlet pipe; 6. Synchronous drive component; 61. Driven wheel; 62. Drive motor; 63. Drive wheel; 64. Drive belt; 65. First drive gear; 66. Second drive gear; 7. Limiting plate; 54. Guide channel; 8. Inlet pipe. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-5 One embodiment provided by the present invention:

[0037] A treatment device for high-salinity industrial wastewater includes: a rotating support 1, with a rotating tank 2 rotatably connected to both ends of the support via bearings; the rotating tank 2 is composed of two symmetrical cones, and a heating device is provided at the bottom of the rotating tank 2.

[0038] Waste discharge components are located inside the rotating tank 2;

[0039] Scraper 4 is located above the waste discharge component; the scraper 4 is attached to the inner wall of the rotating tank 2 and is an arc shape that matches the shape of the inner wall of the rotating tank 2. A limiting plate 7 is also symmetrically provided below the scraper 4. The scraper 4 and the limiting plate 7 are connected to the top of the barrier plate 51 through a connector.

[0040] A condensate collection component, located below the waste discharge component, includes a baffle plate 51, a multi-layer corrugated condenser pipe 52 located below the baffle plate 51, and a condensate outlet pipe 53 connected to the multi-layer corrugated condenser pipe 52. A guide groove 54 is provided at the lower edge of the baffle plate 51, and the guide groove 54 is connected to the condensate outlet pipe 53. One end of the rotating tank 2 is also provided with a water inlet pipe 8, which is connected to the rotating support 1.

[0041] Synchronous drive component 6 is disposed at one end of rotating bracket 1. Synchronous drive component 6 is used to simultaneously rotate tank 2 and waste discharge component for synchronous movement.

[0042] In a further embodiment, the waste discharge component includes a conveyor belt assembly 3 that runs through the inner cavity axis of the rotating tank 2. The conveyor belt assembly 3 includes several sets of conveyor rollers 31 disposed above the baffle plate 51, and a drive roller 32 connected to one end of the rotating support 1. The outer sides of the conveyor rollers 31 and the drive rollers 32 are fitted with a conveyor belt 33 for connection.

[0043] In a further embodiment, the synchronous drive component 6 includes a driven wheel 61 disposed on the outer side of one end of the rotating tank 2, and a drive motor 62 disposed on the same end and connected to the rotating bracket 1. The output end of the drive motor 62 passes through the rotating bracket 1 and is provided with a drive wheel 63. A drive belt 64 is sleeved on the outer side of the drive wheel 63 and the driven wheel 61.

[0044] The rotating tank 2 is provided with a first drive gear 65 on one side and a second drive gear 66 on one side of the drive roller 32. The first drive gear 65 and the second drive gear 66 mesh with each other.

[0045] This embodiment works as follows: The rotating support 1 supports the rotating tank 2 via bearings at both ends, allowing the rotating tank 2 to rotate continuously around its axis. The heating device in this embodiment uses electromagnetic induction heating. This heating method utilizes electromagnetic induction to generate eddy currents inside the tank, directly heating the tank without the need for an external medium. Alternatively, the heating device in this embodiment can be configured as a water bath heating tank below the rotating tank 2. The rotating tank 2 is placed in the water bath heating tank for heating. A heating tank surrounding the lower half of the rotating tank 2 is provided, with a built-in spiral guide plate and a resistance heating tube integrating a PID temperature control module. Combined with a circulating pump, forced convection is formed, and the heating medium (water or heat transfer oil) circulates within the tank, transferring heat to the outer wall of the rotating tank 2 through heat conduction. When the tank rotates, the double-cone structure causes the wastewater to form a thick liquid film, increasing the heated area compared to static treatment. The above heating device is existing technology and will not be described in detail. This invention can adapt to various heating devices and is suitable for different application scenarios.

[0046] The double conical tank structure generates a centrifugal force field during rotation, which promotes the uniform distribution of high-salt wastewater along the inner wall of the tank. At the same time, the rotating support 1 and the drive system work together to achieve dynamic balance.

[0047] The symmetrical conical structure design counteracts the eccentric force during rotation, reduces vibration, and extends bearing life. The V-shaped cavity formed by the double cones guides the crystallized salt to concentrate along the axis, and the centrifugal force further improves the salt extraction efficiency. The waste discharge component consists of a conveyor belt assembly 3 running through the tank axis, including a drive roller 32, a conveyor roller 31, and a conveyor belt 33. When the synchronous drive component 6 is activated, the conveyor belt 33 runs synchronously with the rotating tank 2, continuously conveying the crystallized salt particles stripped by the scraper 4 to the salt discharge port.

[0048] The conveyor belt 33 rotates synchronously with the rotating tank 2, achieving seamless connection between salt stripping and conveying, avoiding downtime for cleaning, and enabling continuous salt discharge. The surface of the conveyor belt 33 is coated with a PTFE anti-stick coating to reduce salt adhesion and minimize the risk of secondary contamination. The scraper component 4 uses an arc-shaped scraper with the same curvature as the inner wall of the tank, and the scraping angle is fixed by the limiting plate 7. During rotation, the scraper component 4 scrapes off the attached crystal layer on the inner wall in real time. The stripped salt particles are guided by the limiting plate 7 to fall into the conveyor belt assembly 3 below. The limiting plate 7 uses an inclined guide surface with a 30° inclination to directly guide the stripped salt particles into the conveyor belt assembly 3, preventing back splashing.

[0049] The baffle plate 51 separates the upper and lower evaporation and condensation zones and the waste discharge zone within the rotating tank 2. Multi-layer corrugated condenser tubes 52 accelerate steam condensation by increasing the contact area. Condensate collects along the guide grooves 54 at the edge of the baffle plate 51 and flows to the condensate outlet pipe 53. The baffle plate 51 employs a double-layer insulation structure, with an aerogel-filled interlayer to prevent steam escape and improve condensate efficiency.

[0050] The drive motor 62 drives the driven wheel 61 of the rotating tank 2 through the drive wheel 63 and drive belt 64. At the same time, the power is transmitted to the conveyor belt assembly 3 through the meshing of the first drive gear 65 and the second drive gear 66. The single motor drives the dual system, which reduces energy consumption. The water inlet pipe 8 is connected to the rotating support 1 through a rotary joint, and wastewater can be continuously injected into the rotating tank 2. The rotation of the tank forms a vortex to accelerate evaporation.

[0051] A method for using a device for treating high-salinity industrial wastewater includes the following steps:

[0052] S1. Wastewater injection: High-salt wastewater is injected into the inner cavity of the double-cone rotating tank 2 through the inlet pipe 8 of the rotating tank 2; the bottom of the rotating tank 2 is heated by a heating device;

[0053] S2. Rotation drive: Start the synchronous drive component 6, drive the drive wheel 63 to rotate through the drive motor 62, drive the driven wheel 61 to rotate through the drive belt 64, and drive the rotating tank 2 to rotate. At the same time, the conveyor belt assembly 3 rotates through the meshing of the first drive gear 65 and the second drive gear 66.

[0054] S3. Dynamic scraping: Under the action of centrifugal force, salt crystals adhere to the inner wall of the rotating tank 2. When the rotating tank 2 moves to the scraper 4, it continuously scrapes off the salt crystals on the inner wall.

[0055] S4. Waste discharge and conveying: The scraped salt crystals are guided by the limiting plate 7 to the conveyor belt assembly 3 and carried out to the outside of the rotating tank 2 for centralized collection. The solid salt and liquid wastewater are separated by the barrier plate 51.

[0056] S5. Condensation recovery: Liquid wastewater is converted into steam and contacts the multi-layer corrugated condenser 52 to complete steam condensation. The condensate is discharged through the guide channel 54 and the outlet pipe to be collected outside the rotating tank 2.

[0057] This invention uses a waste discharge component to send out crystallized salt via a conveyor belt assembly 3, eliminating the need for machine shutdown and improving efficiency. The arc-shaped design of the scraper component 4 fits the inner wall of the tank, scraping away crystals in real time. The limiting plate 7 prevents back splashing. The multi-layer corrugated condenser pipe 52 in the condensate collection component may increase the condensation area. The guide channel 54 helps collect and discharge condensate, improving recovery efficiency. At the same time, the barrier plate 51 isolates different areas to prevent secondary pollution. The synchronous drive component 6 drives multiple components with a single motor, saving energy, ensuring synchronous operation, and reducing failure points.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for treating high-salinity industrial wastewater, characterized in that, include: A rotating support (1) is rotatably connected to a rotating tank (2) at both ends, and the bottom of the rotating tank (2) is heated by a heating device; Waste discharge components are installed inside the rotating tank (2); The scraper component (4) is located above the waste discharge component; The condensate collection component is located below the waste discharge component and includes a baffle plate (51), a multi-layer corrugated condenser pipe (52) located below the baffle plate (51), and a condensate outlet pipe (53) connected to the multi-layer corrugated condenser pipe (52). A synchronous drive component (6) is disposed at one end of the rotating bracket (1). The synchronous drive component (6) is used to simultaneously rotate the tank (2) and the waste discharge component. The rotating tank (2) is composed of two symmetrical cones; The scraper (4) is attached to the inner wall of the rotating tank (2) and its shape is an arc shape that is compatible with the shape of the inner wall of the rotating tank (2); The waste discharge component includes a conveyor belt assembly (3) that runs through the inner cavity axis of the rotating tank (2). The conveyor belt assembly (3) includes several sets of conveyor rollers (31) arranged above the baffle plate (51) and a drive roller (32) connected to one end of the rotating support (1). The outer sides of the conveyor rollers (31) and the drive rollers (32) are connected by a conveyor belt (33).

2. The device for treating high-salinity industrial wastewater according to claim 1, characterized in that, The synchronous drive component (6) includes a driven wheel (61) disposed on the outer side of one end of the rotating tank (2), and a drive motor (62) disposed on the same end and connected to the rotating bracket (1). The output end of the drive motor (62) passes through the rotating bracket (1) and is provided with a drive wheel (63). The drive wheel (63) and the driven wheel (61) are fitted with drive belts (64) on their outer sides.

3. The device for treating high-salinity industrial wastewater according to claim 2, characterized in that, The rotating tank (2) is provided with a first drive gear (65) on one side and a second drive gear (66) on one side of the drive roller (32). The first drive gear (65) and the second drive gear (66) mesh with each other.

4. The device for treating high-salinity industrial wastewater according to claim 1, characterized in that, A limiting plate (7) is also symmetrically provided below the scraper component (4).

5. The treatment device for high-salinity industrial wastewater according to claim 3, characterized in that, The lower edge of the barrier plate (51) is provided with a guide groove (54), which is connected to the condensate outlet pipe (53).

6. The device for treating high-salinity industrial wastewater according to claim 1, characterized in that, One end of the rotating tank (2) is also provided with a water inlet pipe (8), which is connected to the rotating support (1).

7. A method of using the treatment apparatus for high-salinity industrial wastewater according to any one of claims 1-6, characterized in that, The method of use includes the following steps: S1. Wastewater injection: High-salt wastewater is injected into the inner cavity of the double-cone rotating tank (2) through the inlet pipe (8) of the rotating tank (2); the bottom of the rotating tank (2) is heated by a heating device; S2. Rotation drive: Start the synchronous drive component (6), drive the drive wheel (63) to rotate through the drive motor (62), drive the driven wheel (61) to rotate through the drive belt (64), drive the rotating tank (2) to rotate, and at the same time drive the conveyor belt assembly (3) to rotate through the meshing of the first drive gear (65) and the second drive gear (66). S3. Dynamic scraping: Under the action of centrifugal force, salt crystals adhere to the inner wall of the rotating tank (2). When the rotating tank (2) moves to the scraper (4), it continuously scrapes off the salt crystals on the inner wall. S4. Waste discharge and conveying: The scraped salt crystals are guided by the limiting plate (7) to the conveyor belt assembly (3) and carried out to the outside of the rotating tank (2) for centralized collection. The solid salt and liquid wastewater are separated by the barrier plate (51). S5. Condensation recovery: Liquid wastewater is converted into steam and comes into contact with the multi-layer corrugated condenser (52) to complete steam condensation. The condensate is discharged through the guide channel (54) and discharged to the outside of the rotating tank (2) for centralized collection.

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