Nitrogen-containing concentrated salt wastewater treatment device

Abstract

The utility model discloses a nitrogen-containing concentrated salt wastewater treatment device, which belongs to the technical field of nitrogen-containing concentrated salt wastewater treatment, and adopts the technical scheme that the nitrogen-containing concentrated salt wastewater treatment device comprises a treatment cylinder, a reaction component is arranged in the treatment cylinder, a treatment component is arranged on the outer side of the treatment cylinder, and the reaction component comprises a driving motor fixedly connected to the top of the treatment cylinder; the output end of the driving motor is fixedly connected with a stirring shaft, so that the problems that when chemical agents such as phosphate and magnesium salt are added into an existing nitrogen-containing concentrated salt wastewater treatment device, the chemical agents are inconvenient to quickly and uniformly add; the problems that nitrogen in waste water cannot fully react with chemicals to be converted into precipitates, nitrogen removal is not thorough, the treatment efficiency of the waste water is affected, steam and liquid in the evaporation process are inconvenient to efficiently separate, liquid is easily left in the steam, and the purity and the recovery quality of salt are affected in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen-containing concentrated salt wastewater treatment technology, and in particular to a nitrogen-containing concentrated salt wastewater treatment device. Background Technology

[0002] In the application of seawater desalination and reclaimed water production processes, membrane technology has become the main unit for reclaimed water treatment. However, these processes generate a large amount of concentrated brine. Nitrogen-containing concentrated brine wastewater treatment devices can effectively remove nitrogen and salt from wastewater, enabling the treated water to meet discharge standards or be reused, realizing the recycling of water resources, reducing environmental pollution, lowering the cost of wastewater treatment for enterprises, and helping to solve the problem of waste salt resource utilization, thus promoting the sustainable development of related industries.

[0003] In existing technologies, most methods involve treating nitrogen-containing concentrated saline wastewater by placing it into a nitrogen-containing concentrated saline wastewater treatment device. This device adds chemical agents such as phosphates and magnesium salts, causing the nitrogen in the wastewater to react and be converted into precipitates. These precipitates are then filtered through a filter plate, followed by ultrafiltration to remove concentrated salts, thus achieving nitrogen and salt removal. However, when nitrogen-containing concentrated saline wastewater is placed in the treatment device, it remains relatively stagnant, resulting in a slow reaction rate between the added chemical agents and the wastewater, and consequently, a slow treatment rate. Therefore, this invention provides a nitrogen-containing concentrated saline wastewater treatment device.

[0004] An existing patent (publication number: CN222204993U) discloses a nitrogen-containing concentrated salt wastewater treatment device. This device adds nitrogen-containing concentrated salt wastewater and chemical agents to a treatment tank while simultaneously rotating a rotating rod via a drive assembly, causing the stirring shaft to rotate. After the reaction is complete, a connecting assembly transports the wastewater and sediment from the treatment tank to a filter tank. The sediment is filtered through a filter plate, and then concentrated salt and other impurities are filtered through an ultrafiltration membrane. The filtered water is then discharged through an outlet pipe. The stirring shaft agitates the inside of the treatment tank, accelerating the chemical reaction between the chemical agents and nitrogen in the nitrogen-containing concentrated salt wastewater. This prevents the nitrogen-containing concentrated salt wastewater from remaining relatively stagnant inside the treatment tank, thus increasing the speed of wastewater treatment.

[0005] To address the aforementioned issues, existing patents offer solutions. However, existing nitrogen-containing concentrated salt wastewater treatment devices do not allow for the rapid and uniform addition of chemical agents such as phosphates and magnesium salts. This results in insufficient reaction between the nitrogen in the wastewater and the agents to form precipitates, leading to incomplete nitrogen removal and affecting treatment efficiency. Furthermore, the devices do not facilitate efficient separation of steam and liquid during the evaporation process, resulting in residual liquid in the steam and impacting the purity and recovery quality of the salt.

[0006] Therefore, a nitrogen-containing concentrated salt wastewater treatment device is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a nitrogen-containing concentrated salt wastewater treatment device that solves the problems of existing nitrogen-containing concentrated salt wastewater treatment devices. These devices are not designed for rapid and uniform addition of chemical agents such as phosphates and magnesium salts, which prevents nitrogen in the wastewater from fully reacting with the agents to form precipitates, resulting in incomplete nitrogen removal and affecting treatment efficiency. Furthermore, they are not designed for efficient separation of steam and liquid during the evaporation process, leading to residual liquid in the steam and affecting the purity and recovery quality of the salt.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen-containing concentrated salt wastewater treatment device, comprising a treatment cylinder, wherein a reaction component is located inside the treatment cylinder, and a treatment component is provided on the outside of the treatment cylinder;

[0009] The reaction assembly includes a drive motor fixedly connected to the top of the processing cylinder, a stirring shaft fixedly connected to the output end of the drive motor, stirring blades fixedly connected to the output end of the stirring shaft, a storage tank fixedly connected to the outside of the processing cylinder, a delivery pump fixedly connected to the top of the storage tank, a connecting pipe fixedly connected to the output end of the delivery pump, a return pipe fixedly connected to the inside of the processing cylinder, the return pipe communicating with the connecting pipe, and a nozzle communicating with the bottom of the return pipe.

[0010] Preferably, the processing assembly includes a control pump movably connected to the bottom of the processing cylinder, the output end of the control pump being connected to a delivery pipe, and the bottom of the delivery pipe being connected to an evaporator crystallizer.

[0011] Preferably, the bottom of the evaporator crystallizer is fixedly connected to a base, and the right side of the evaporator crystallizer is connected to a connecting pipe.

[0012] Preferably, a gas-liquid separator is connected to the right side of the connecting pipe, a base plate is fixedly connected to the bottom of the gas-liquid separator, and a discharge valve pipe is provided on the right side of the gas-liquid separator.

[0013] Preferably, a connecting support rod is fixedly connected to the outer side of the stirring shaft, a push spring is fixedly connected inside the connecting support rod, a support rod is fixedly connected to the outer side of the push spring, and a scraper is fixedly connected to the outer side of the support rod.

[0014] Preferably, a temperature controller is provided on the left side of the processing cylinder, and a cavity is opened inside the processing cylinder. A heating wire is provided inside the cavity, and the temperature controller is electrically connected to the heating wire.

[0015] Preferably, a filter plate is fixedly connected to the bottom of the processing cylinder, and a discharge pipe is connected to the bottom of the processing cylinder, which is connected to a control pump.

[0016] Preferably, a support leg is fixedly connected to the bottom of the processing cylinder, and a rubber foot pad is fixedly connected to the bottom of the support leg.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application utilizes a reaction component to add chemical agents such as phosphates and magnesium salts when treating concentrated saline wastewater containing ammonia nitrogen. Simultaneously, the components are uniformly stirred, allowing them to contact ammonia nitrogen more quickly and accelerating the reaction process to form magnesium ammonium phosphate precipitate. This results in efficient removal of nitrogen from the wastewater, improved treatment efficiency, and reduced treatment time.

[0019] 2. This application uses a processing component to heat and evaporate the pre-filtered wastewater, causing the salt in the wastewater to gradually crystallize and precipitate out as the water evaporates. At the same time, it can effectively separate the liquid components in the steam. The separated liquid can then be returned to the evaporator crystallizer for further processing, while the pure steam is discharged through the exhaust valve pipe, thereby improving the purity of the salt, avoiding residual liquid in the steam from affecting the quality of the salt, and further improving the quality of salt recovery. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of a nitrogen-containing concentrated salt wastewater treatment device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the reaction component of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the processing component of this utility model;

[0023] Figure 4 This is a cross-sectional view of the processing cylinder of this utility model;

[0024] Figure 5 This is a cross-sectional view of the connecting support rod of this utility model.

[0025] In the diagram, 1. Processing cylinder; 2. Connecting support rod; 3. Push spring; 4. Reaction assembly; 41. Drive motor; 42. Stirring shaft; 43. Stirring blade; 44. Storage tank; 45. Transfer pump; 46. Connecting pipe; 47. Return pipe; 48. Nozzle; 5. Processing assembly; 51. Control pump; 52. Transfer pipe; 53. Evaporator crystallizer; 54. Base; 55. Connecting pipe; 56. Gas-liquid separator; 57. Base plate; 58. Discharge valve pipe; 6. Support rod; 7. Scraper; 8. Temperature controller; 9. Cavity; 10. Heating wire; 11. Filter plate; 12. Discharge pipe; 13. Support leg; 14. Rubber foot pad. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A nitrogen-containing concentrated salt wastewater treatment device includes a treatment cylinder 1, with a reaction component 4 inside the treatment cylinder 1 and a treatment component 5 on the outside of the treatment cylinder 1.

[0029] The reaction assembly 4 includes a drive motor 41 fixedly connected to the top of the processing cylinder 1. The output end of the drive motor 41 is fixedly connected to a stirring shaft 42. The output end of the stirring shaft 42 is fixedly connected to a stirring blade 43. A storage tank 44 is fixedly connected to the outside of the processing cylinder 1. A delivery pump 45 is fixedly connected to the top of the storage tank 44. A connecting pipe 46 is fixedly connected to the output end of the delivery pump 45. A return pipe 47 is fixedly connected to the inside of the processing cylinder 1. The return pipe 47 communicates with the connecting pipe 46. A nozzle 48 is connected to the bottom of the return pipe 47.

[0030] In this embodiment: by starting the drive motor 41, the drive motor 41 drives the stirring shaft 42 to rotate, and then the stirring shaft 42 drives the stirring blade 43 to rotate at high speed. A storage tank 44 is fixedly installed on the outside of the treatment cylinder 1. The storage tank 44 stores phosphate reagent. At the same time, the delivery pump 45 is started, and then the feed end of the delivery pump 45 draws the chemical reagent from the storage tank 44. Then, it is transported to the inside of the treatment cylinder 1 through the connecting pipe 46. The connecting pipe 46 is connected to the return pipe 47. Then, the nozzle 48 at the bottom of the return pipe 47 sprays the chemical reagent evenly into the nitrogen-containing concentrated salt wastewater in the treatment cylinder 1. The stirring action of the stirring blade 43 makes the wastewater and chemical reagent fully mixed to increase the contact area between the reactants and accelerate the chemical reaction rate. Then, the nitrogen in the nitrogen-containing concentrated salt wastewater reacts with the chemical reagent to be converted into precipitate.

[0031] Specifically, such as Figure 3 As shown, the processing component 5 includes a control pump 51 movably connected to the bottom of the processing cylinder 1. The output end of the control pump 51 is connected to a conveying pipe 52, and the bottom of the conveying pipe 52 is connected to an evaporator crystallizer 53.

[0032] Specifically, such as Figure 3 As shown, a base 54 is fixedly connected to the bottom of the evaporator crystallizer 53, and a connecting pipe 55 is connected to the right side of the evaporator crystallizer 53.

[0033] Specifically, such as Figure 3 As shown, a gas-liquid separator 56 is connected to the right side of the connecting pipe 55, and a base plate 57 is fixedly connected to the bottom of the gas-liquid separator 56. A discharge valve pipe 58 is provided on the right side of the gas-liquid separator 56.

[0034] In this embodiment: the pre-filtered wastewater enters the control pump 51 through the discharge pipe 12. The control pump 51 is then connected to the discharge pipe 12, and its output end is connected to the conveying pipe 52 to transport the pre-filtered wastewater to the evaporator crystallizer 53. At the same time, the base 54 fixed at the bottom of the evaporator crystallizer 53 provides support. Then, the evaporator crystallizer 53 heats and evaporates the wastewater. As the water evaporates, the salt concentration in the wastewater gradually increases. After reaching saturation, crystallization begins. The steam generated during the evaporation crystallization process enters the gas-liquid separator 56 through the connecting pipe 55. The gas-liquid separator 56 uses a special structure and principle to separate the liquid component from the steam. Then, the liquid flows back to the evaporator crystallizer 53 or is processed, while the pure steam is discharged through the discharge valve pipe 58. After being processed by the gas-liquid separator 56, effective gas-liquid separation is achieved, further improving the purity of the salt and the recovery quality.

[0035] Specifically, such as Figure 5As shown, a connecting rod 2 is fixedly connected to the outer side of the stirring shaft 42, a push spring 3 is fixedly connected inside the connecting rod 2, a support rod 6 is fixedly connected to the outer side of the push spring 3, and a scraper 7 is fixedly connected to the outer side of the support rod 6.

[0036] Specifically, such as Figure 4 As shown, a temperature controller 8 is provided on the left side of the processing cylinder 1, and a cavity 9 is opened inside the processing cylinder 1. A heating wire 10 is provided inside the cavity 9, and the temperature controller 8 is electrically connected to the heating wire 10.

[0037] In this embodiment: By setting up a connecting rod 2, a push spring 3, a support rod 6, and a scraper 7, when the nitrogen-containing concentrated salt wastewater treatment device is running, its drive motor 41 drives the stirring shaft 42 to rotate at high speed. Then, the connecting rod 2, which is fixedly connected to the outside of the stirring shaft 42, rotates accordingly. The push spring 3 inside the connecting rod 2 is in an extended state, constantly providing an outward pushing force to the support rod 6. Under the action of the push spring 3, the scraper 7 fixed to the outside of the support rod 6 is tightly attached to the inner wall of the treatment cylinder 1. As the stirring shaft 42 continues to rotate, the scraper 7 continuously scrapes along the inner wall of the treatment cylinder 1. The scraper 7 can promptly scrape off the precipitate attached to the inner wall of the treatment cylinder 1, preventing the precipitate from accumulating on the cylinder wall. This prevents the accumulation of precipitate from affecting the full reaction, ensuring that the contact area between the chemical reagent and the wastewater is not affected, and maintaining a high-efficiency chemical reaction rate. This also prevents excessive sediment buildup from affecting the heat transfer efficiency of the treatment cylinder 1, ensuring that the heat generated by the heating wire 10 can be effectively transferred to the wastewater. By setting a temperature controller 8 and a heating wire 10, in the process of treating nitrogen-containing concentrated salt wastewater, a suitable reaction temperature is set by operating the temperature controller 8 according to the characteristics of the wastewater being treated and the requirements of the chemical reaction. The temperature controller 8 is electrically connected to the heating wire 10 in the internal cavity 9 of the treatment cylinder 1. It will automatically adjust the working state of the heating wire 10 according to the difference between the set temperature and the actual temperature inside the treatment cylinder 1. If the temperature inside the treatment cylinder 1 is lower than the set value, the temperature controller 8 will energize the heating wire 10 to heat up. When the temperature reaches or exceeds the set value, the temperature controller 8 will control the heating wire 10 to reduce its power or stop working, so as to improve the stability and repeatability of the entire treatment process.

[0038] Specifically, such as Figure 2 As shown, a filter plate 11 is fixedly connected to the bottom of the processing cylinder 1, and a discharge pipe 12 is connected to the bottom of the processing cylinder 1. The discharge pipe 12 is connected to the control pump 51.

[0039] Specifically, such as Figure 1 As shown, a support leg 13 is fixedly connected to the bottom of the processing cylinder 1, and a rubber foot pad 14 is fixedly connected to the bottom of the support leg 13.

[0040] In this embodiment: by setting up a filter plate 11 and a discharge pipe 12, after the nitrogen-containing concentrated salt wastewater reacts with the chemical agent, the mixed liquid after the reaction will flow downward to the bottom of the treatment cylinder 1. The filter plate 11, which is fixedly connected to the bottom of the treatment cylinder 1, performs preliminary filtration of the mixed liquid, trapping the solid precipitate generated by the reaction above the filter plate 11. The wastewater after preliminary filtration enters the control pump 51 through the discharge pipe 12 connected to the bottom of the treatment cylinder 1. After the control pump 51 is started, it transports the preliminarily filtered wastewater to the evaporator crystallizer 53 for subsequent treatment through the conveying pipe 52 connected to its output end. By setting up support legs 13 and rubber feet 14, the support legs 13 ensure the stability of the device, so that the device will not be affected by shaking or tilting during operation, avoiding equipment damage and poor treatment effect caused by device instability. At the same time, the rubber feet 14 can reduce the wear and loosening of parts caused by vibration, extend the service life of the device, and improve the reliability and durability of the device.

[0041] Working Principle: In the process of using the nitrogen-containing concentrated salt wastewater treatment device, nitrogen-containing concentrated salt wastewater is first added through the feed inlet at the top of the treatment cylinder 1. Then, the drive motor 41 is started, which drives the stirring shaft 42 to rotate. The stirring shaft 42 then drives the stirring blades 43 to rotate at high speed. A storage tank 44 is fixedly installed on the outside of the treatment cylinder 1, and the storage tank 44 stores phosphate reagents. Simultaneously, the transfer pump 45 is started, and the feed end of the transfer pump 45 draws the chemical reagents from the storage tank 44. These reagents are then transported to the inside of the treatment cylinder 1 through a connecting pipe 46, which is connected to a return pipe 47. The nozzle 48 at the bottom of the treatment cylinder 1 evenly sprays the chemical agent onto the nitrogen-containing concentrated salt wastewater. The stirring action of the stirring blade 43 ensures thorough mixing of the wastewater and chemical agent, increasing the contact area between reactants and accelerating the chemical reaction. Then, the nitrogen in the nitrogen-containing concentrated salt wastewater reacts with the chemical agent to form precipitates. A heating wire 10 is installed in the cavity 9 inside the treatment cylinder 1. The working state of the heating wire 10 can be adjusted by the temperature controller 8, thereby controlling the reaction temperature inside the treatment cylinder 1. A suitable temperature further promotes the chemical reaction and improves nitrogen removal efficiency. The bottom of the treatment cylinder 1 is fixedly connected to... The wastewater and sediment after the reaction pass through filter plate 11 for preliminary filtration. The solid sediment is then trapped above filter plate 11. The pre-filtered wastewater then enters control pump 51 through discharge pipe 12. Control pump 51 is connected to discharge pipe 12, and its output end is connected to conveying pipe 52, which transports the pre-filtered wastewater to evaporator crystallizer 53. Simultaneously, the base 54 fixed at the bottom of evaporator crystallizer 53 provides support. Evaporator crystallizer 53 then heats and evaporates the wastewater. As the water evaporates, the salt concentration in the wastewater gradually increases. Once saturation is reached, crystallization begins. During the evaporation and crystallization process, the following substances are produced: The steam enters the gas-liquid separator 56 through the connecting pipe 55. The gas-liquid separator 56 uses a special structure and principle to separate the liquid component from the steam. Then the liquid flows back to the evaporator crystallizer 53 or is processed, while the pure steam is discharged through the discharge valve pipe 58. After being processed by the gas-liquid separator 56, effective separation of gas and liquid is achieved, which further improves the purity and recovery quality of salt. During the rotation of the stirring shaft 42, the scraper 7 is pressed against the inner wall of the processing cylinder 1 by the push spring 3. The scraper 7 can scrape off the precipitate attached to the inner wall of the processing cylinder 1 to prevent the precipitate from accumulating on the cylinder wall and affecting the reaction effect and normal operation of the device.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for treating nitrogen-containing concentrated saline wastewater, comprising a treatment cylinder (1), characterized in that: The processing cylinder (1) contains a reaction component (4) inside and a processing component (5) is provided on the outside of the processing cylinder (1). The reaction assembly (4) includes a drive motor (41) fixedly connected to the top of the processing cylinder (1), a stirring shaft (42) fixedly connected to the output end of the drive motor (41), a stirring blade (43) fixedly connected to the output end of the stirring shaft (42), a storage tank (44) fixedly connected to the outside of the processing cylinder (1), a delivery pump (45) fixedly connected to the top of the storage tank (44), a connecting pipe (46) fixedly connected to the output end of the delivery pump (45), a return pipe (47) fixedly connected to the inside of the processing cylinder (1), the return pipe (47) communicating with the connecting pipe (46), and a nozzle (48) communicating with the bottom of the return pipe (47).

2. The nitrogen-containing concentrated salt wastewater treatment device according to claim 1, characterized in that: The processing assembly (5) includes a control pump (51) movably connected to the bottom of the processing cylinder (1), the output end of the control pump (51) being connected to a delivery pipe (52), and the bottom of the delivery pipe (52) being connected to an evaporator crystallizer (53).

3. The nitrogen-containing concentrated salt wastewater treatment device according to claim 2, characterized in that: The bottom of the evaporator (53) is fixedly connected to a base (54), and the right side of the evaporator (53) is connected to a connecting pipe (55).

4. The nitrogen-containing concentrated saline wastewater treatment device according to claim 3, characterized in that: The gas-liquid separator (56) is connected to the right side of the connecting pipe (55), and a base plate (57) is fixedly connected to the bottom of the gas-liquid separator (56). A discharge valve pipe (58) is provided on the right side of the gas-liquid separator (56).

5. The nitrogen-containing concentrated salt wastewater treatment device according to claim 1, characterized in that: A connecting rod (2) is fixedly connected to the outside of the stirring shaft (42), a push spring (3) is fixedly connected inside the connecting rod (2), a support rod (6) is fixedly connected to the outside of the push spring (3), and a scraper (7) is fixedly connected to the outside of the support rod (6).

6. The nitrogen-containing concentrated saline wastewater treatment device according to claim 1, characterized in that: A temperature controller (8) is provided on the left side of the processing cylinder (1). A cavity (9) is provided inside the processing cylinder (1). A heating wire (10) is provided inside the cavity (9). The temperature controller (8) is electrically connected to the heating wire (10).

7. The nitrogen-containing concentrated salt wastewater treatment device according to claim 2, characterized in that: A filter plate (11) is fixedly connected to the bottom of the processing cylinder (1), and a discharge pipe (12) is connected to the bottom of the processing cylinder (1). The discharge pipe (12) is connected to the control pump (51).

8. The nitrogen-containing concentrated saline wastewater treatment device according to claim 1, characterized in that: The bottom of the processing cylinder (1) is fixedly connected to a support leg (13), and the bottom of the support leg (13) is fixedly connected to a rubber foot pad (14).

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