Industrial wastewater ammonia nitrogen treatment system

Abstract

The utility model discloses a treatment system for ammonia nitrogen in industrial wastewater. The treatment system comprises a first desorption solution pool; the first-stage separator is provided with an upper inlet, the extracted desorption solution is sprayed into the upper part of the first-stage separator through a first spray head, the left side inlet of the first-stage separator is connected with the waste liquid pool through a pipeline, and a first high-speed running device is arranged in the first-stage separator, so that air flow moving at a high speed is formed to blow off and desorb mixed liquid of the industrial wastewater and the desorption solution; a right-side outlet at the upper part of the primary separator is connected to a left-side inlet at the upper part of the first dehydrator; a lower outlet of the first dehydrator is connected to an inlet of the first desorption liquid pool through a first valve and a pipeline, an upper outlet of the first dehydrator is connected to an upper inlet of the second-stage separator, a second high-speed running device is arranged in the second-stage separator, and a right outlet of the upper part of the second-stage separator is connected to a left inlet of the upper part of the second dehydrator; an upper outlet of the second dehydrator is connected to an upper inlet of the first-stage separator; and a lower outlet of the second dehydrator is connected to an inlet of the second desorption liquid pool.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial wastewater treatment technical field, specifically, relate to a kind of industrial wastewater ammonia nitrogen treatment system. BACKGROUND

[0002] With the rapid development of industry, the discharge of industrial wastewater is becoming increasingly serious. Among the numerous industrial wastewater, ammonia nitrogen content exceeds the standard is a common problem. The large amount of ammonia nitrogen wastewater discharge not only causes serious pollution to the environment, but also poses potential threats to the survival of aquatic organisms and human health.

[0003] Currently, the commonly used ammonia nitrogen treatment methods for industrial wastewater include physical methods, chemical methods and biological methods. Physical methods mainly include stripping method, adsorption method, etc. Chemical methods include chemical precipitation method, breakpoint chlorination method, etc. Biological methods include traditional activated sludge method, biofilm method, etc. However, these methods have certain limitations in practical application.

[0004] For example, although the stripping method is simple to operate, it has high energy consumption and is prone to secondary pollution. The adsorbent cost of the adsorption method is high and needs to be replaced frequently. The chemical precipitation method produces a large amount of chemical sludge, which has high treatment cost. The reagent cost of the breakpoint chlorination method is expensive, and the operation requires high requirements. The treatment period of the biological method is long, and the water quality and temperature conditions of the wastewater are relatively strict.

[0005] Therefore, it is of great practical significance to develop an efficient, economical and environmentally friendly ammonia nitrogen treatment technology for industrial wastewater. SUMMARY

[0006] The present specification provides a treatment system for ammonia nitrogen in industrial wastewater to overcome at least one technical problem in the related art.

[0007] According to the embodiments of the present specification, a treatment system for ammonia nitrogen in industrial wastewater is provided, comprising:

[0008] A first resolving liquid pool containing a resolving liquid;

[0009] A first separator with an upper inlet for receiving the resolving liquid extracted from the first resolving liquid pool by a first extraction pump, the extracted resolving liquid is sprayed into the upper part of the first separator through a first spray head; the left side inlet of the upper part of the first separator is connected to a waste liquid pool through a pipeline, the waste liquid pool contains industrial wastewater to be treated; the inside of the first separator is provided with a first high-speed rotating device, which forms a high-speed airflow to blow off and desorb the mixed liquid of the industrial wastewater extracted from the waste liquid pool and the resolving liquid sprayed by the first spray head; the right side outlet of the upper part of the first separator is connected to the left side inlet of the upper part of the first dehydrator;

[0010] The lower outlet of the first dewatering device is connected to the inlet of the first resolving liquid pool through a first valve and a pipeline, the upper outlet of the first dewatering device is connected to the upper inlet of the secondary separator through a gas phase conveying pipeline, the secondary separator is internally provided with a second high-speed rotating device, the right outlet of the upper part of the secondary separator is connected to the left inlet of the upper part of the second dewatering device, and the upper outlet of the second dewatering device is connected to the upper inlet of the primary separator through a gas phase return pipeline;

[0011] The lower outlet of the second dewatering device is connected to the inlet of the second resolving liquid pool through a pipeline, the outlet of the second resolving liquid pool is connected to the second spray head at the upper inlet of the secondary separator through a pipeline, and the pipeline connecting the second resolving liquid pool and the upper inlet of the secondary separator is provided with a second pumping device.

[0012] Preferably, the first high-speed rotating device and the second high-speed rotating device are both combinations of a centrifugal fan and a spiral guide vane, the centrifugal fan is used for generating airflow, and the spiral guide vane is used for guiding and accelerating the airflow generated by the centrifugal fan; wherein the centrifugal fan is powered by a series motor, and the motor is a B35 type motor or a B5 type motor.

[0013] Preferably, the inner walls of the primary separator, the first dewatering device, the baffle, the secondary separator, the second dewatering device, the gas phase conveying pipeline and the gas phase return pipeline are coated with an anti-corrosion and anti-wear coating made of a high polymer material; wherein the inside of the gas phase conveying pipeline and the gas phase return pipeline is smooth.

[0014] Preferably, the automatic intelligent control system is further connected with each electrical component in the processing system, and is used for adjusting the operating parameters of each electrical component according to the preset program and real-time monitoring data.

[0015] Preferably, a waste water detection device is installed at the lower outlet of the second dewatering device, and the waste water detection device is used for detecting whether the waste water at the lower outlet of the second dewatering device meets the relevant emission standards.

[0016] Preferably, the first dewatering device and the second dewatering device have the same structure; wherein the first dewatering device comprises a volute casing, an air outlet, an upper cylinder, an upper inclined plate, an air inlet, a lower inclined plate, a lower cylinder and a lower cone.

[0017] The volute casing is arranged in a surrounding shape, serving as a key part of the shell and providing a protection and support frame for the internal structure.

[0018] The air outlet is arranged at the upper part of the volute casing.

[0019] The upper cylinder is made of pressure-resistant and corrosion-resistant material, and is connected with the lower cylinder to form a main frame, and the top of the main frame is stably connected with the corresponding part of the volute plate;

[0020] The upper inclined plate is obliquely installed at a proper position inside the upper cylinder;

[0021] The air inlet is designed in shape and size according to the processing scale and air flow demand, and is arranged on one side of the volute plate to adapt to the front-end process requirement;

[0022] The lower inclined plate is obliquely installed at a proper position inside the lower cylinder, and cooperates with the upper inclined plate to optimize the gas-liquid flow path, so as to promote the downward flow of water vapor condensate and prevent secondary entrainment;

[0023] The lower cylinder is made of pressure-resistant and corrosion-resistant material, and is connected with the upper cylinder to form a main frame, and the bottom of the main frame is stably connected with the top of the lower cone to jointly bear the operating pressure and accommodate the processing capacity;

[0024] The lower cone is designed in a conical shape, the bottom outlet of the lower cone is connected with the inlet of the first valve, and the outlet of the first valve is connected with the inlet of the first resolving liquid pool through a pipeline.

[0025] Preferably, the connection mode of the upper cylinder and the volute plate, and the connection mode of the lower cylinder and the lower cone are one or more combinations of welding, bolt connection or riveting.

[0026] Preferably, the connection mode of the upper inclined plate and the upper cylinder, and the connection mode of the lower inclined plate and the lower cylinder are clamping groove connection, welding or bolt connection, and the connection part is sealed, and the sealing material is rubber gasket or sealing glue.

[0027] Preferably, the connection mode of the air inlet and the cylinder is flange connection or welding.

[0028] Preferably, the connection mode of the air outlet and the volute plate is flange connection or welding.

[0029] The beneficial effects of the embodiments of the present specification are as follows: the first high-speed operating device in the primary separator generates a high-speed airflow that fully agitates the mixed solution of the wastewater extracted from the wastewater pool and the resolving liquid extracted from the first resolving liquid pool, creates conditions for ammonia nitrogen to escape from the liquid phase into the gas phase according to the gas-liquid mass transfer principle, and realizes preliminary separation of ammonia nitrogen. After the primary separator, the gas-liquid mixture flows into the first dehydrator for precise separation of gas and liquid by the synergistic effect of gravity settling, inertial collision and centrifugal force. The gas carrying a small amount of water vapor enters the gas phase pipeline from the upper outlet, is introduced to the secondary separator, and the liquid is collected at the lower outlet, part of which is returned to the first resolving liquid pool through the first valve for recycling. After the primary separation of the gas phase ammonia nitrogen in the primary separator, the second high-speed operating device drives the ammonia nitrogen to react and mass transfer with the desorption liquid in the secondary separator, which increases the contact probability and frequency of ammonia nitrogen and desorption liquid, promotes more ammonia nitrogen to be absorbed from the gas phase to the liquid phase, significantly improves the depth and precision of ammonia nitrogen removal, and ensures that the ammonia nitrogen content of the wastewater after multi-stage treatment meets the standard. The gas-liquid mixture after the reaction treatment of the secondary separator flows into the second dehydrator for further gas-liquid separation, efficient removal of residual water vapor and impurities, and precise separation of trace ammonia nitrogen and water vapor in the gas. The gas phase is returned to the primary separator through the gas phase return pipeline for recycling, and the liquid is collected at the lower outlet of the second dehydrator and connected to the second resolving liquid pool for recycling, thereby realizing the recycling of materials in the system. The multi-stage separation and reaction technology is adopted to realize efficient removal of ammonia nitrogen, shorten the treatment time, and reduce the equipment capacity requirement. No ammonia gas and other pollution gases are generated during the operation of the system, the ammonia nitrogen removal process gas is zero discharged, and secondary pollution is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present specification, and other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 The overall structure schematic diagram of the industrial wastewater ammonia nitrogen treatment system provided by an embodiment of the present specification is shown in the figure.

[0032] Figure 2 The structure schematic diagram of the dehydrator in the industrial wastewater ammonia nitrogen treatment system provided by the embodiment of the present specification is shown in the figure.

[0033] Wherein, 1 represents a first resolving liquid pool, 2 represents a first extraction pump, 3 represents a first separator, 4 represents a first valve, 5 represents a first dehydrator, 51 represents a volute casing, 52 represents an air outlet, 53 represents an upper cylinder, 54 represents an upper inclined plate, 55 represents an air inlet, 56 represents a lower inclined plate, 57 represents a lower cylinder, 58 represents a lower cone, 6 represents a baffle, 7 represents a first nozzle, 8 represents a second nozzle, 9 represents a second separator, 10 represents a second valve, 11 represents a second dehydrator, 12 represents a second resolving liquid pool, 13 represents a second extraction pump, 14 represents a gas phase conveying pipeline, 15 represents a gas phase return pipeline, and 16 represents a waste liquid pool. DETAILED DESCRIPTION

[0034] The utility model will be made further detailed description below combining with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not limit the utility model. In addition, it needs to be explained that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0035] In the description of the utility model, unless there is explicit provision and limitation, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless there is explicit provision and limitation, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the embodiment, the terms "up", "down", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0038] The following is based on Figures 1 to 2 The structure of the industrial wastewater ammonia nitrogen treatment system is introduced.

[0039] As Figure 1 shown, Figure 1 The overall structure diagram of an industrial wastewater ammonia nitrogen treatment system is provided in an embodiment of the present application, which comprises a first resolving liquid pool 1, the first resolving liquid pool 1 is provided with resolving liquid, a first-stage separator 3 with an upper inlet is used for receiving resolving liquid extracted from the first resolving liquid pool 1 by a first extraction pump 2, the extracted resolving liquid is sprayed into the upper part of the first-stage separator 3 through a first spray head 7; the left inlet of the upper part of the first-stage separator 3 is connected with a waste liquid pool 16 through a pipeline, the waste liquid pool 16 is provided with industrial wastewater to be treated; the first-stage separator 3 is provided with a first high-speed rotating device inside, the first high-speed rotating device forms a high-speed moving gas flow to blow off and desorb the mixed liquid of the industrial wastewater extracted from the waste liquid pool 16 and the resolving liquid sprayed by the first spray head 7, and the right outlet of the upper part of the first-stage separator 3 is connected with the left inlet of the upper part of a first dewatering device 5.

[0040] The lower outlet of the first dewatering device 5 is connected with the inlet of the first resolving liquid pool 1 through a first valve 4 and a pipeline, the upper outlet of the first dewatering device 5 is connected with the upper inlet of a second-stage separator 9 through a gas phase conveying pipeline 14, the second-stage separator 9 is provided with a second high-speed rotating device inside, the right outlet of the upper part of the second-stage separator 9 is connected with the left inlet of the upper part of a second dewatering device 11, and the upper outlet of the second dewatering device 11 is connected with the upper inlet of the first-stage separator 3 through a gas phase return pipeline 15.

[0041] The lower outlet of the second dewatering device 11 is connected with the inlet of a second resolving liquid pool 12 through a pipeline, the outlet of the second resolving liquid pool 12 is connected with a second spray head 8 at the upper inlet of the second-stage separator 9 through a pipeline, and the pipeline connecting the second resolving liquid pool 12 with the upper inlet of the second-stage separator 9 is provided with a second extraction pump 13.

[0042] In the above system, after the system is started, the first extraction pump 2 extracts the resolving liquid from the first resolving liquid pool 1 and sprays it into the upper part of the first separator 3 through the first spray head 7. At the same time, the industrial wastewater to be treated in the waste liquid pool 16 is delivered to the left side inlet of the first separator 3 through the pipeline. The first high-speed running device in the first separator 3 generates a high-speed airflow, which drives the mixed solution of the wastewater extracted from the waste liquid pool 16 and the resolving liquid extracted from the first resolving liquid pool 1 to be fully stirred, creates conditions for ammonia nitrogen to escape from the liquid phase into the gas phase according to the gas-liquid mass transfer principle, and realizes the preliminary separation of ammonia nitrogen. After the treatment of the first separator 3, the gas-liquid mixture flows into the first dehydrator 5, and the gas-liquid mixture is accurately separated by the combined action of gravity sedimentation, inertial collision and centrifugal force. The gas carrying a small amount of water vapor enters the gas phase conveying pipeline 14 from the upper outlet, and is introduced into the second separator 9. The liquid is collected at the lower outlet, and part of it is returned to the first resolving liquid pool 1 through the first valve 4 for recycling.

[0043] After the gas phase ammonia nitrogen preliminarily separated by the first separator is input into the second separator, the second high-speed running device drives the ammonia nitrogen to react with the desorption liquid in the second separator 9, which increases the contact probability and frequency of ammonia nitrogen and desorption liquid, promotes more ammonia nitrogen to be absorbed from the gas phase to the liquid phase, significantly improves the removal depth and accuracy of ammonia nitrogen, and ensures that the ammonia nitrogen content of the wastewater meets the standard after multi-stage treatment. The gas-liquid mixture treated by the second separator 9 flows into the second dehydrator 11, and further gas-liquid separation is carried out to efficiently remove residual water vapor and impurities, accurately separate a small amount of ammonia nitrogen and water vapor in the gas, and return the gas phase to the first separator 3 through the gas phase return pipeline 15 for recycling, thereby improving the recycling rate of ammonia nitrogen. The liquid is collected at the lower outlet of the second dehydrator 11 and is introduced into the second resolving liquid pool 12 for recycling, thereby completing multiple desorption processes. The multi-stage separation and reaction technology is adopted to realize efficient removal of ammonia nitrogen, shorten the treatment time, reduce the equipment capacity demand, fully remove ammonia nitrogen, and avoid secondary pollution and protect the atmospheric environment. The system does not produce ammonia gas and other pollutants during operation, realizes zero emission of ammonia nitrogen removal process gas, and realizes material recycling in the system.

[0044] On the basis of the foregoing technical solutions, some further technical solutions are provided as follows.

[0045] In the optional embodiment, the first high-speed running device and the second high-speed running device can be a combination of a centrifugal fan and a spiral guide vane; the centrifugal fan is used to generate airflow, and the spiral guide vane is used to guide and accelerate the airflow generated by the centrifugal fan; the centrifugal fan can be powered by a series motor, and the motor can be a B35 motor or a B5 motor.

[0046] In the scheme, the series motor drives the impeller to rotate at high speed, accelerates the airflow according to the centrifugal principle, and the impeller can be selected as forward or backward type aluminum alloy material to ensure smooth and efficient suction and discharge of the airflow. The spiral guide vanes are precisely installed in a logarithmic spiral shape around the outlet of the fan, accurately guiding the high-speed turbulent flow at the outlet of the fan to accelerate into a stable strong spiral upward airflow, providing power for the ammonia-nitrogen efficient stripping and desorption of the primary separator.

[0047] Considering that in the ammonia-nitrogen treatment system of industrial wastewater, the primary separator, the dehydrator and the pipeline are in long-term contact with complex media containing ammonia-nitrogen, acid and alkali components and impurities, and without protection, the metal inner wall is easily corroded, which can reduce the structural strength and cause perforation leakage. Therefore, in the optional embodiment technical scheme, the inner walls of the primary separator 3, the first dehydrator 5, the flow baffle 6, the secondary separator 9, the second dehydrator 11, the gas phase conveying pipeline 14 and the gas phase return pipeline 15 can be coated with an anti-corrosion and wear-resistant coating, which is made of a high polymer material. Since the high polymer coating can isolate the medium, it can prevent chemical corrosion, effectively prolong the service life of the equipment, greatly reduce the maintenance and replacement frequency, reduce the total equipment ownership cost, and ensure long-term stable operation of the system. The inside of the gas phase conveying pipeline 14 and the gas phase return pipeline 15 is smooth, and the smooth pipe wall can greatly reduce the friction resistance of the airflow. According to the principle of fluid mechanics, the friction coefficient is reduced, the airflow flows smoothly in the pipeline, and the pressure loss is significantly reduced. Considering the complex industrial wastewater treatment environment, the gas phase contains impurities, water vapor and acid and alkali components, the smooth inner wall of the pipeline greatly reduces the possibility of impurity adhesion, and the impurities are not easy to deposit and condense, reducing the corrosion risk of the pipeline and prolonging the service life.

[0048] In an optional embodiment, to improve the intelligent level of the industrial wastewater ammonia nitrogen treatment system in the present application, an automatic intelligent control system can be introduced, which can be connected with each electrical component in the treatment system, and used to control the operating parameters of each electrical component according to a preset program and real-time monitoring data. The following provides a possible implementation of the automatic intelligent control system: the automatic intelligent control system can be constructed on the basis of a multi-element sensor network. At the waste liquid pool, each stage of the separator, the dewatering device and the pipeline key nodes, liquid level sensors, flow sensors, pressure sensors, ammonia nitrogen concentration sensors and the like are arranged to collect real-time data of liquid level, flow, pressure, water quality and the like. The sensors are connected with the control system PLC or industrial computer through shielded cables, and the data transmission can be high-speed and stable according to the Modbus or Profibus protocol, to provide real-time data for accurate control of the system, such as real-time feedback of the change of the ammonia nitrogen concentration of the waste liquid to the system, to provide a start-up adjustment instruction for the treatment process. The automatic intelligent control system can integrate intelligent control algorithms, such as the system core, which can be an intelligent control algorithm, combining fuzzy logic, PID control and neural network technology. Fuzzy logic processes complex nonlinear relationships, and the ammonia nitrogen concentration and flow are processed in a fuzzy manner according to a fuzzy rule base; PID control accurately adjusts the flow and pressure parameters, and adjusts the equipment output in real time according to the deviation proportion, integral and differential; neural network learns historical data to optimize control strategies, and predicts treatment trends and pre-adjusts equipment operating conditions. For example, if the wastewater flow suddenly increases, the algorithm quickly calculates the pump speed and valve opening degree to ensure the stability and efficiency of the system, and intelligently switches the algorithm modules or cooperates with them to continuously enable the efficient operation, energy saving and precise treatment of the system. The control system instructions are accurately driven by the relay, frequency converter and electric regulating valve to execute the mechanism. The frequency converter adjusts the speed of the extraction pump and fan motor according to the instructions; the electric regulating valve motor drives the valve core displacement to adjust the flow; and the on-off type equipment is switched by the relay to start and stop. The feedback signal of the execution mechanism is fed back to the system in real time to verify the control effect, correct the instruction deviation, and ensure accurate execution of the instructions and stable operation of the equipment. If the ammonia nitrogen concentration decreases, the system reduces the fan speed to save energy, the execution mechanism responds quickly to stabilize the system operating parameters, improve the treatment efficiency and quality, and realizes the automation and intelligence of the industrial wastewater ammonia nitrogen treatment.

[0049] In an optional embodiment, a wastewater detector can be installed at the lower outlet position of the second dewatering device 11 to detect whether the wastewater discharged from the lower outlet of the second dewatering device 11 meets the discharge standard. If the discharge standard is met, the wastewater is sequentially discharged or further treated, and if the discharge standard is not met, the control system is immediately fed back, and the wastewater is returned for further treatment to prevent environmental pollution caused by unqualified discharge.

[0050] The following describes a possible structure of the first dewatering device 5 and the second dewatering device 11 described above. The first dewatering device 5 and the second dewatering device 11 have the same structure; the following describes the structure of the first dewatering device 5. Figure 2The first dehydrator 5 in the first dehydrator 5 is taken as an example for illustration. The first dehydrator 5 comprises a volute casing 51, an air outlet 52, an upper cylinder 53, an upper inclined plate 54, an air inlet 55, a lower inclined plate 56, a lower cylinder 57 and a lower cone 58.

[0051] The volute casing 51 is arranged in a surrounding manner and serves as a key part of the shell to provide a protection and support frame for the internal structure. The volute casing 51 can be shaped in a streamlined profile according to fluid mechanics to guide the smooth flow of gas, reduce energy consumption and flow resistance, and ensure the stability and efficiency of operation.

[0052] The air outlet 52 is arranged at the upper portion of the volute casing 51. According to the analysis of the flow field characteristics, this position is consistent with the trajectory of the gas flow after the gas-liquid separation in the dehydrator. The profile of the volute casing 51 can guide the smooth and orderly discharge of the dehydrated gas flow, avoid turbulence and vortex to cause pressure fluctuation and energy loss, and ensure the orderly discharge of the dehydrated gas flow. The design can be optimized after simulation to effectively prevent backflow and vortex, and to stably maintain the dehydration effect and the stable operation of the system.

[0053] The upper cylinder 53 is made of pressure-resistant and corrosion-resistant materials and constitutes a main frame with the lower cylinder 57. The top of the upper cylinder 53 is stably connected to the corresponding part of the volute casing 1. The size ratio of the upper cylinder 53 can be determined according to the working conditions to ensure that it can accommodate the processing capacity and withstand the operating pressure.

[0054] The upper inclined plate 54 is installed at a proper position inside the upper cylinder 53. From the perspective of the axial angle of the cylinder of the upper cylinder 53, the upper inclined plate 54 is located at the lower portion of the upper cylinder 53 to ensure that the gas-liquid mixture entering the dehydrator can fully utilize the cylinder space of the upper cylinder 53 for preliminary separation of gas and liquid after entering the inclined plate. From the circumferential direction, the upper inclined plate 54 is distributed with two left and right plates according to the cylinder circumference of the upper cylinder 53, which is seamlessly connected to the inner wall of the cylinder.

[0055] As shown in Figure 2 The angle of the left upper inclined plate can be 50-65 degrees, for example, 60 degrees, and the angle of the right upper inclined plate can be 25-35 degrees, for example, 30 degrees. The upper inclined plate 54 cooperates with the lower inclined plate 56 below to optimize the gas flow and liquid flow path, and to promote the efficient gathering of water vapor condensate by the synergistic effect of gravity and gas flow drag, effectively preventing secondary entrainment and improving the dehydration accuracy and efficiency.

[0056] In this scheme, the angle of the left upper inclined plate is greater than that of the right upper inclined plate, which is aimed at synergistically optimizing the gas-liquid flow path. When the system is running, the wet material and gas flow enter the dehydrator. The large-angle inclined plate on the left side strongly changes the direction of the gas flow, forms an upward and leftward component, and makes the water vapor condensate quickly flow downward and gather by the gravity and gas flow drag. The small-angle inclined plate on the right side moderately adjusts the gas flow to guide the downward liquid and prevent secondary entrainment. The two cooperate to improve the dehydration accuracy and efficiency, ensure the efficient removal of water vapor condensate, and the smooth discharge of the gas flow.

[0057] The first dehydrator 5 also includes an air inlet 55, which is designed in shape and size according to the processing scale and air flow demand, and is adapted to the front-end process requirements, and is arranged on one side of the volute surrounding plate 51. The shape and size of the air inlet 55 can be designed according to the processing scale and air flow demand to ensure uniform air intake of the wet material. The lower inclined plate 56 is obliquely arranged at a suitable position inside the lower cylinder 57. From the axial angle, the lower inclined plate 56 is located at the lower part of the lower cylinder 57, and cooperates with the upper inclined plate 54 to optimize the gas-liquid flow path, promote the downward flow of water vapor condensate and prevent secondary entrainment, and improve the dehydration accuracy and efficiency. The lower cylinder 57 is made of pressure-resistant and corrosion-resistant materials, and cooperates with the upper cylinder 53 to form the main frame, and the bottom of the lower cylinder 57 is stably connected with the top of the lower cone 58 to jointly bear the operating pressure and accommodate the processing capacity. The lower cone 58 is designed in a conical shape and is stably arranged on the lower cylinder 57 to receive and guide out the liquid. The bottom outlet of the lower cone 58 is connected to the inlet of the first valve 4, and the outlet of the first valve 4 is connected to the inlet of the first resolving liquid pool 1 through a pipeline.

[0058] The connection mode of the upper cylinder 53, the volute surrounding plate 51, the lower cylinder 57 and the lower cone 58 can be one or a combination of welding, bolt connection or riveting, to ensure stable and reliable connection, good sealing, meet the harsh working condition requirements of industrial wastewater treatment, prevent leakage risk during operation, maintain stable system operation environment and treatment effect. The connection mode of the upper inclined plate 54 and the upper cylinder 53, and the lower inclined plate 56 and the lower cylinder 57 can adopt clamping groove connection, welding or bolt connection, and the connection is sealed, the sealing material is rubber gasket or sealing glue, to prevent water vapor leakage affecting the dehydration efficiency and system stability, ensure the continuous and stable play of the optimization effect of the gas-liquid flow path, and improve the overall performance and reliability of the dehydrator. The connection mode of the air inlet 55 and the cylinder is flange connection or welding, to ensure uniform and stable air intake without leakage, maintain stable system operating pressure, provide continuous and stable material input conditions for the dehydration process, ensure efficient and orderly progress of the dehydration process, and improve the system processing efficiency and stability. The connection mode of the air outlet 52 and the volute surrounding plate 51 can be flange connection or welding.

[0059] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can modify the technical solutions described in the foregoing examples, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An industrial wastewater ammonia nitrogen treatment system, characterized in that, The application relates to a wastewater treatment device, which comprises the following parts: a first resolving liquid pool (1) containing resolving liquid; a first-stage separator (3) with an upper inlet for receiving resolving liquid extracted from the first resolving liquid pool (1) by a first extraction pump (2), wherein the extracted resolving liquid is sprayed into the upper part of the first-stage separator (3) through a first spray head (7); a left inlet of the upper part of the first-stage separator (3) is connected with a waste liquid pool (16) containing industrial wastewater to be treated through a pipeline; a first high-speed rotating device is arranged in the first-stage separator (3), and the first high-speed rotating device forms a high-speed airflow to blow off and desorb mixed liquid of the industrial wastewater extracted from the waste liquid pool (16) and the resolving liquid sprayed by the first spray head (7); a right outlet of the upper part of the first-stage separator (3) is connected with a left inlet of an upper part of a first dewatering device (5); and a flow baffle (6) is arranged above the first spray head (7); a lower outlet of the first dewatering device (5) is connected with an inlet of the first resolving liquid pool (1) through a first valve (4) and a pipeline; an upper outlet of the first dewatering device (5) is connected with an upper inlet of a second-stage separator (9) through a gas-phase conveying pipeline (14); a second high-speed rotating device is arranged in the second-stage separator (9); a right outlet of an upper part of the second-stage separator (9) is connected with a left inlet of an upper part of a second dewatering device (11); and an upper outlet of the second dewatering device (11) is connected with an upper inlet of the first-stage separator (3) through a gas-phase return pipeline (15); a lower outlet of the second dewatering device (11) is connected with an inlet of a second resolving liquid pool (12) through a pipeline; an outlet of the second resolving liquid pool (12) is connected with a second spray head (8) arranged at the upper inlet of the second-stage separator (9) through a pipeline; and a second extraction pump (13) is arranged in the pipeline connecting the second resolving liquid pool (12) with the upper inlet of the second-stage separator (9).

2. The system for treating ammonia-nitrogen in industrial wastewater according to claim 1, wherein The first high-speed rotating device and the second high-speed rotating device are both combinations of centrifugal fans and spiral guide vanes, the centrifugal fans are used for generating airflow, and the spiral guide vanes are used for guiding and accelerating the airflow generated by the centrifugal fans; wherein the centrifugal fans are powered by series motors, and the motors are B35 type motors or B5 type motors.

3. The system for treating ammonia-nitrogen in industrial wastewater according to claim 1, wherein The inner walls of the first-stage separator (3), the first dewatering device (5), the flow baffle (6), the second-stage separator (9), the second dewatering device (11), the gas-phase conveying pipeline (14) and the gas-phase return pipeline (15) are coated with an anticorrosion and antiwear coating made of high-molecular polymer material; wherein the inner walls of the gas-phase conveying pipeline (14) and the gas-phase return pipeline (15) are smooth.

4. The system for treating ammonia-nitrogen in industrial wastewater according to claim 1, wherein An automatic intelligent control system is further arranged, which is connected with all electrical components in the treatment system and is used for adjusting the operation parameters of the electrical components according to preset programs and real-time monitoring data.

5. The system for treating ammonia-nitrogen in industrial wastewater according to claim 1, wherein The lower outlet position of the second dewatering device (11) is provided with a wastewater detection device for detecting whether the wastewater of the lower outlet of the second dewatering device (11) meets the relevant emission standard.

6. The system for treatment of ammonia-nitrogen in industrial wastewater according to claim 1, wherein The first dewatering device (5) and the second dewatering device (11) are of the same structure; wherein the first dewatering device (5) comprises a volute casing (51), an air outlet (52), an upper cylinder (53), an upper inclined plate (54), an air inlet (55), a lower inclined plate (56), a lower cylinder (57) and a lower cone (58); The volute casing (51) is arranged in a surrounding manner, serving as a key part of the shell and providing a protection and support frame for the internal structure; The air outlet (52) is arranged at the upper part of the volute casing (51); The upper cylinder (53) is made of pressure-resistant and corrosion-resistant material and forms a main frame with the lower cylinder (57), and the top thereof is stably connected with the corresponding part of the volute casing (51); The upper inclined plate (54) is obliquely arranged at a proper position inside the upper cylinder (53); The air inlet (55) is designed in shape and size according to the processing scale and airflow demand, and is arranged at one side of the volute casing (51) to adapt to the requirements of the front-end process; The lower inclined plate (56) is obliquely arranged at a proper position inside the lower cylinder (57) and cooperates with the upper inclined plate (54) to optimize the gas-liquid flow path, so as to promote the downward flow of water vapor condensate and prevent secondary entrainment; The lower cylinder (57) is made of pressure-resistant and corrosion-resistant material and forms a main frame with the upper cylinder (53), and the bottom thereof is stably connected with the top of the lower cone (58) to jointly bear the operating pressure and accommodate the processing capacity; The lower cone (58) is designed in a conical shape, the bottom outlet of the lower cone (58) is connected with the inlet of the first valve (4), and the outlet of the first valve (4) is connected with the inlet of the first resolving liquid pool (1) through a pipeline.

7. The system for treating ammonia-nitrogen in industrial wastewater according to claim 6, wherein The connection between the upper cylinder (53) and the volute casing (51), the connection between the lower cylinder (57) and the lower cone (58) are one or more combinations of welding, bolt connection or riveting.

8. The system for treating ammonia-nitrogen in industrial wastewater according to claim 6, wherein, The connection between the upper inclined plate (54) and the upper cylinder (53), the connection between the lower inclined plate (56) and the lower cylinder (57) adopt clamping groove connection, welding or bolt connection, and the connection part is sealed, and the sealing material is rubber gasket or sealing glue.

9. The system for treatment of ammonia nitrogen in industrial wastewater according to claim 6, wherein, The connection between the air inlet (55) and the cylinder is flange connection or welding.

10. The system for treating ammonia-nitrogen in industrial wastewater according to claim 6, wherein The connection between the air outlet (52) and the volute casing (51) is flange connection or welding.

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