Poultry feather hydrolysis wastewater deamination system and deamination method thereof

Abstract

The application discloses a poultry feather hydrolysis wastewater deamination system and a deamination method thereof, which comprises a water pump, an inlet of which is connected with a first circulating pipeline, and an outlet of which is connected with a second circulating pipeline; a first wastewater pipeline, which is in communication with the first circulating pipeline to supply wastewater; an electric heater, an inlet of which is in communication with the second circulating pipeline, and an outlet of which is connected with a third circulating pipeline; a flash tank, an inlet of which is in communication with the third circulating pipeline, and an outlet of which is in communication with the first circulating pipeline; a nozzle, which is arranged in the flash tank, an inlet of which is in communication with the third circulating pipeline to receive wastewater, and which is arranged to spray the wastewater in the flash tank in a mist state; and a vacuumizing assembly, an inlet of which is in communication with the flash tank to discharge gas in the flash tank to form a vacuum negative pressure state, and an outlet of which is connected with a gas-water separating assembly to separate gas ammonia and liquid.

Description

Technical Field

[0001] This invention relates to the field of ammonia removal technology, and in particular to an ammonia removal system and method for poultry feather hydrolysis wastewater. Background Technology

[0002] Traditionally, poultry feathers are disposed of through incineration or landfill, which pollutes the environment. To reduce environmental pollution and improve the utilization of resources, poultry feathers are hydrolyzed into protein powder, which can be used as a raw material for producing high-protein feed.

[0003] The poultry feather hydrolysis process generates wastewater containing high levels of ammonia. This ammonia-laden wastewater, directly discharged into the sewage system, causes high concentrations of ammonia, especially free ammonia, to directly poison key microorganisms such as nitrifying bacteria, inhibiting their activity and reproduction, thus hindering the nitrification process and leading to ammonia nitrogen accumulation. Simultaneously, denitrifying bacteria, lacking nitrification products, cannot effectively remove nitrogen, resulting in a nitrogen imbalance in the system. The collapse of the microbial community structure further weakens the body's ability to degrade organic matter (COD / BOD), leading to decreased sludge activity, deteriorated settling properties, and excessive levels of ammonia nitrogen and organic matter in the effluent, ultimately causing the sewage treatment system to completely fail.

[0004] Therefore, it is urgent to research and develop an ammonia removal system and method for poultry feather hydrolysis wastewater to reduce the ammonia content in the wastewater so that it can meet the treatment standards of the sewage system and solve the above-mentioned technical defects. Summary of the Invention

[0005] The purpose of this invention is to provide an ammonia removal system and method for poultry feather hydrolysis wastewater, which can reduce the ammonia content in the wastewater.

[0006] To achieve the above objectives, the present invention provides an ammonia removal system for poultry feather hydrolysis wastewater, the specific implementation of which is as follows:

[0007] A poultry feather hydrolysis wastewater ammonia removal system includes:

[0008] The water pump has a first circulation pipe connected to its inlet and a second circulation pipe connected to its outlet.

[0009] The first wastewater pipeline is connected to the first circulation pipeline to supply wastewater;

[0010] The electric heater has an inlet connected to a second circulation pipe and an outlet connected to a third circulation pipe.

[0011] The flash tank has its inlet connected to the third circulation pipe and its outlet connected to the first circulation pipe.

[0012] A nozzle, located inside the flash tank, has its inlet connected to a third circulation pipe to receive wastewater and atomize it for spraying inside the flash tank; and

[0013] The vacuum assembly has an inlet connected to the flash tank to create a vacuum negative pressure state by discharging the gas inside the flash tank, and an outlet connected to a gas-liquid separator to separate the ammonia gas and the liquid.

[0014] This invention discloses an ammonia removal system for poultry feather hydrolysis wastewater. Compared to existing technologies, this system utilizes a vacuum assembly to create a negative pressure state in the flash tank, significantly lowering the boiling point of water and the Henry's constant of ammonia. This allows ammonia in the wastewater to escape from the liquid phase to the gas phase more efficiently and rapidly at relatively lower operating temperatures. Combined with nozzles that atomize the wastewater into fine droplets, this greatly increases the specific surface area of ​​the wastewater, accelerating the mass transfer rate of dissolved ammonia to gaseous ammonia. The ammonia- and water vapor-rich gas extracted by the vacuum assembly then enters a gas-liquid separation assembly, effectively separating ammonia from condensate, ultimately yielding high-purity ammonia while reducing the ammonia content in the wastewater. Furthermore, the closed-loop circulation process allows the wastewater to undergo multiple ammonia removal processes, achieving efficient and deep removal of ammonia nitrogen from the wastewater and ensuring that the ammonia content in the effluent meets environmental protection requirements.

[0015] In some embodiments, the nozzle includes a connecting part and a spraying part that are interconnected. The connecting part is connected to the third circulation pipe. The nozzle of the spraying part is a tapered opening that expands from top to bottom and outwards, and faces the outlet direction of the flash tank. The spraying part has a mixing chamber inside, and the outer wall of the spraying part is provided with a plurality of air holes that connect to the mixing chamber. The third circulation pipe is connected to the inlet of the vacuum assembly.

[0016] By setting the nozzle of the spray section to a conical nozzle to form a Venturi tube structure, when high-pressure wastewater enters the spray section through the narrow connection, the flow rate increases sharply and the pressure decreases drastically (Bernoulli's principle), forming a local vacuum negative pressure in the mixing chamber. In conjunction with the vacuum pumping component actively extracting gas from the flash tank through the air vents, and superimposed with the Venturi effect, a super strong negative pressure field is formed inside the spray section. Under the action of dual negative pressure, the wastewater is torn into micron-sized droplets with a smaller particle size than conventional atomization, increasing the specific surface area and significantly shortening the diffusion path of ammonia molecules into the gas phase, thereby improving the atomization effect and the ammonia removal effect of the wastewater.

[0017] In some embodiments, the mixing chamber is equipped with magnets to create a magnetic field through which the liquid passes.

[0018] By placing a magnet inside the mixing chamber, when the wastewater passes through the magnetic field at high speed, the wastewater cuts the magnetic field lines, and the ionic ammonia is converted into free ammonia. When NH3 (charged ions) moves in the magnetic field, it is affected by the Lorentz force, which changes the migration path and increases the probability of collision with the gas-liquid interface, promoting the release of NH4+ (ammonium ions) into H0 (holmium) and converting it into NH3. The single conversion rate is 20% to 40%.

[0019] In some embodiments, the vacuum assembly includes a vacuum pump, a first gas pipe, and a second gas pipe. The inlet of the vacuum pump is connected to the first gas pipe, the other end of the first gas pipe is connected to the flash tank, the outlet of the vacuum pump is connected to the second gas pipe, and the other end of the second gas pipe is connected to the gas-liquid separation assembly.

[0020] The vacuum pipeline design, which uses a first gas pipeline for evacuation and a second gas pipeline for delivery, enables efficient establishment of vacuum in the flash tank and directional delivery of ammonia-rich gas. The vacuum pump serves as the core power source, ensuring that the system operates under continuous and stable negative pressure, providing a basic environmental guarantee for ammonia removal from wastewater atomization, while also preventing gas backflow pollution.

[0021] In some embodiments, the gas-water separation assembly includes a separation tank, an exhaust pipe, and a drain pipe. The exhaust pipe is located at the top of the separation tank and connects to the separation tank. The drain pipe is located at the bottom of the separation tank and connects to the separation tank. The second gas pipeline connects to the separation tank to send the separated components into the separation tank.

[0022] The gravity settling separator achieves passive separation of gas and liquid phases. After the ammonia-rich gas enters the tank, the flow rate drops sharply. Due to the density difference, the ammonia rises to the top and is collected through the exhaust pipe for subsequent recovery or discharge. The condensate sinks to the bottom and is discharged through the drain pipe. This design requires no additional energy consumption and has a simple structure and low maintenance cost.

[0023] In some embodiments, the other end of the drain pipe is connected to a heat sink, the outlet of the heat sink is connected to a cooling pipe, and the other end of the cooling pipe is connected to the vacuum pump to deliver the cooling liquid to the vacuum pump for cooling.

[0024] The low-temperature condensate discharged from the bottom of the separator flows through the heat sink for pre-cooling and is then transported to the vacuum pump through the cooling pipe to cool it down. This solves the problem of high-temperature operation of the vacuum pump, prevents overheating shutdown, and recovers the cold energy of the waste liquid, reducing the system's cooling water consumption.

[0025] In some embodiments, the flash tank is equipped with a vacuum sensor, and the first circulation pipe is equipped with a temperature sensor near the flash tank. The temperature sensor, vacuum sensor, vacuum pump, and electric heater are all communicatively or electrically connected to a control box.

[0026] Through closed-loop control of vacuum and temperature signals, the vacuum sensor monitors the negative pressure status of the flash tank in real time, the temperature sensor tracks the thermodynamic conditions of the circulating wastewater, and the control box dynamically adjusts the power of the electric heater and the start and stop of the vacuum pump to ensure that the system always operates under the optimal ammonia removal conditions, thereby improving ammonia removal efficiency and stability.

[0027] In some embodiments, the heating temperature of the electric heater is 50°-70°.

[0028] By setting the heating temperature of the electric heater to 50°-70° and combining it with vacuum flash evaporation to lower the boiling point of wastewater to 45-60°C, low-temperature and efficient ammonia removal is achieved.

[0029] In some embodiments, the first circulation pipe is provided with a first three-way valve, which is connected to the first wastewater pipe, and the second circulation pipe is provided with a second three-way valve, which is connected to the second wastewater pipe.

[0030] The first three-way valve controls the switching between raw water supply (first wastewater pipeline) and circulating liquid reuse (first circulating pipeline) to ensure the stability of batch treatment concentration. The second three-way valve controls the switching between qualified drainage (second wastewater pipeline) and wastewater transportation (second circulating pipeline) to meet the needs of intermittent operation (automatic discharge after 10 cycles per ton of water). The system can seamlessly switch between continuous water intake or batch treatment modes to adapt to different production scenarios.

[0031] This invention also provides a method for removing ammonia from poultry feather hydrolysis wastewater, which, when applied to the above-mentioned poultry feather hydrolysis wastewater ammonia removal system, includes the following steps:

[0032] Wastewater entering the first circulation pipe is pumped through the third circulation pipe into the electric heater;

[0033] After the wastewater is heated to the preset temperature, it is transferred from the third circulation pipe to the nozzle.

[0034] Wastewater is sprayed into the flash tank by atomized liquid from the nozzle, while atomized gas containing ammonia is drawn into the gas-water mixture by the vacuum pumping unit.

[0035] Water vapor in the ammonia-containing gas is cooled and condensed in the gas-water separation component, and the ammonia-containing gas is released into the air.

[0036] Based on the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0037] The vacuum system creates a negative pressure environment in the flash tank, significantly lowering the boiling point of water and the Henry's constant of ammonia. This allows ammonia in the wastewater to escape from the liquid phase to the gas phase more efficiently and quickly at relatively lower operating temperatures. Combined with nozzles that atomize the wastewater into fine droplets, this greatly increases the specific surface area of ​​the wastewater, accelerating the mass transfer rate of dissolved ammonia to gaseous ammonia. The ammonia- and water vapor-rich gas extracted by the vacuum system then enters a gas-liquid separator, effectively separating ammonia from condensate to obtain high-purity ammonia while reducing the ammonia content in the wastewater. Furthermore, a closed-loop circulation process allows the wastewater to undergo multiple ammonia removal processes, ultimately achieving efficient and deep removal of ammonia nitrogen from the wastewater, ensuring that the ammonia content in the effluent meets environmental protection requirements. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the present invention;

[0039] Figure 2 For the present invention Figure 1 A schematic diagram showing the dismantling of part of the flash tank structure;

[0040] Figure 3 This is a schematic diagram of the nozzle structure of the present invention;

[0041] Figure 4 This is a cross-sectional schematic diagram of the nozzle of the present invention;

[0042] Figure 5 This is a schematic diagram of the deammoniation method of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100. Water pump; 110. First three-way valve; 120. Second three-way valve; 130. First wastewater pipe; 140. Second wastewater pipe; 150. First circulation pipe; 160. Second circulation pipe; 200. Electric heater; 210. Third circulation pipe; 220. Temperature sensor; 300. Flash tank; 310. Vacuum sensor; 320. Liquid level gauge; 400. Nozzle; 410. Connecting part; 420. Spraying part; 421. Mixing chamber; 422. Air hole; 423. Magnet; 500. Vacuum assembly; 510. First gas pipe; 520. Vacuum pump; 530. Second gas pipe; 600. Gas-water separation assembly; 610. Separation tank; 620. Exhaust pipe; 630. Drain pipe; 640. Drainage pipe; 700. Heat sink; 800. Cooling pipe; 900. Control box. Detailed Implementation

[0045] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0046] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0047] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0048] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0049] Example 1:

[0050] like Figure 1 and 2 As shown in the figure, this embodiment provides an ammonia removal system for poultry feather hydrolysis wastewater, comprising:

[0051] The water pump 100 has a first circulation pipe 150 connected to its inlet and a second circulation pipe 160 connected to its outlet.

[0052] The first wastewater pipe 130 is connected to the first circulation pipe 150 to supply wastewater;

[0053] The electric heater 200 has an inlet connected to the second circulation pipe 160 and an outlet connected to the third circulation pipe 210.

[0054] The flash tank 300 has its inlet connected to the third circulation pipe 210 and its outlet connected to the first circulation pipe 150.

[0055] Nozzle 400, located inside the flash tank 300, has its inlet connected to the third circulation pipe 210 to receive wastewater and atomize and spray it inside the flash tank 300; and

[0056] The vacuum assembly 500 is connected to the flash tank 300 at its inlet to create a vacuum negative pressure state by discharging the gas inside the flash tank 300, and is connected to a gas-liquid separator 600 at its outlet to separate ammonia gas and liquid.

[0057] The inlet of the water pump 100 is connected to the first three-way valve 110 via a pipeline. The first three-way valve 110 is connected to the first circulation pipeline 150 and the first wastewater pipeline 130. The first wastewater pipeline 130 is used to send untreated poultry feather hydrolysis wastewater from the outside. The control box 900 of the deammoniation system controls the first three-way valve 110 to switch the first circulation pipeline 150 or the first wastewater pipeline 130 and the water pump 100 to achieve the switching of wastewater entering the system for deammoniation and wastewater circulation deammoniation within the system.

[0058] Furthermore, the outlet of the water pump 100 is also connected to a second three-way valve 120 via a pipeline. The second three-way valve 120 is connected to the second circulation pipeline 160 and the second wastewater pipeline 140. Similarly, the control box 900 controls the second three-way valve 120 to switch the connection between the second circulation pipeline 160, the second wastewater pipeline 140 and the water pump 100, so as to discharge the wastewater that meets the ammonia removal standard out of the system and transfer the wastewater that needs to be deammonified to the electric heater 200 for heating.

[0059] The vacuum pump assembly 500 includes a vacuum pump 520, a first gas pipeline 510, and a second gas pipeline 530. The inlet of the vacuum pump 520 is connected to the first gas pipeline 510, and the other end of the first gas pipeline 510 is connected to the flash tank 300. The outlet of the vacuum pump 520 is connected to the second gas pipeline 530, and the other end of the second gas pipeline 530 is connected to the gas-water separation assembly 600.

[0060] The gas-water separation assembly 600 includes a separation tank 610, an exhaust pipe 620, and a drain pipe 630. The exhaust pipe 620 is located at the top of the separation tank 610 and connects to the separation tank 610. The drain pipe 630 is located at the bottom of the separation tank 610 and connects to the separation tank 610. The second gas pipeline 530 connects to the separation tank 610 to send the separated components into the separation tank 610.

[0061] Furthermore, an additional drain pipe 640 can be installed on the separator 610 to discharge or recycle the condensed liquid inside the separator 610.

[0062] The other end of the drain pipe 630 is connected to a heat sink 700, and the outlet of the heat sink 700 is connected to a cooling pipe 800. The other end of the cooling pipe 800 is connected to the vacuum pump 520 to deliver the cooling liquid to the vacuum pump 520 for cooling.

[0063] The heat sink 700 employs a cooling fan and a heat sink cavity. The heat sink cavity is connected to a cooling pipe 800 and a drain pipe 630, respectively. The cooling fan provides air cooling to the heat sink cavity.

[0064] The heating temperature of the electric heater 200 is set in the range of 50°-70°. Combined with the vacuuming component 500 to vacuum the flash tank 300, the boiling point of the vacuum flashed wastewater is reduced to 45-60°C, achieving low-temperature and high-efficiency ammonia removal.

[0065] Combination Figure 3 and Figure 4As shown, the nozzle 400 includes a connecting part 410 and a spraying part 420 that are interconnected. The connecting part 410 is connected to the third circulation pipe 210. The nozzle of the spraying part 420 is a tapered opening that expands from top to bottom and outwards, and faces the outlet direction of the flash tank 300. The spraying part 420 has a mixing chamber 421 inside. The outer wall of the spraying part 420 is provided with a plurality of air holes 422 that connect to the mixing chamber 421. The third circulation pipe 210 is connected to the inlet of the vacuum assembly 500.

[0066] The nozzle is designed as a conical nozzle to form a Venturi tube structure. When high-pressure wastewater enters the spraying section 420 through the narrow connecting part 410, the flow rate increases sharply and the pressure decreases drastically (Bernoulli's principle). This creates a local vacuum negative pressure in the mixing chamber 421. In conjunction with the vacuum pumping component 500, the gas inside the flash tank 300 is actively extracted through the air hole 422. This, combined with the Venturi effect, creates a super-strong negative pressure field inside the spraying section 420. Under the action of the dual negative pressure, the wastewater is torn into micron-sized droplets with a smaller atomization particle size than conventional atomization, increasing the specific surface area and significantly shortening the path of ammonia molecules to diffuse into the gas phase, thereby improving the atomization effect and the ammonia removal effect of the wastewater.

[0067] The mixing chamber 421 is equipped with a magnet 423, which forms a magnetic field for the liquid to pass through. When the wastewater passes through the magnetic field at high speed, the wastewater cuts the magnetic field lines, and the ionic ammonia is converted into the free ammonia. When NH3 (charged ions) moves in the magnetic field, it is affected by the Lorentz force, which changes the migration path and increases the probability of collision with the gas-liquid interface, promoting the release of NH4+ (ammonium ions) into H0 (holmium) and conversion into NH3. The single conversion rate is 20% to 40%.

[0068] The flash tank 300 is equipped with a vacuum sensor 310, and the first circulation pipe 150 is equipped with a temperature sensor 220 near the flash tank 300. The temperature sensor 220, vacuum sensor 310, water pump 100, vacuum pump 520, and electric heater 200 are all communicatively or electrically connected to the control box 900. Through closed-loop control of vacuum and temperature signals, the vacuum sensor 310 monitors the negative pressure state of the flash tank 300 in real time, the temperature sensor 220 tracks the thermodynamic conditions of the circulating wastewater, and the control box 900 dynamically adjusts the power of the electric heater 200 and the start and stop of the vacuum pump 520 to ensure that the system always operates under optimal ammonia removal conditions, thereby improving ammonia removal efficiency and stability.

[0069] The flash tank 300 is also equipped with a level gauge 320 on its outer wall to monitor the wastewater level inside the flash tank 300.

[0070] The control box 900 described in this embodiment is a control box 900 in the prior art, as long as it can control the first three-way valve 110, the second three-way valve 120, the water pump 100, the vacuum pump 520, the heat sink 700, and the electric heater 200.

[0071] The electric heater 200 described in this embodiment is an existing electric heater 200, as long as it can heat the wastewater.

[0072] Example 2:

[0073] like Figure 5 As shown, this embodiment provides a method for deammoniation of poultry feather hydrolysis wastewater, applied to the poultry feather hydrolysis wastewater deammoniation system of Example 1, and includes the following steps:

[0074] Wastewater entering the first circulation pipe 150 is pumped by the water pump 100 and then enters the electric heater 200 through the third circulation pipe;

[0075] After the wastewater is heated to the preset temperature, it is transferred from the third circulation pipe 210 to the nozzle 400.

[0076] Wastewater is atomized by nozzle 400 and sprayed into flash tank 300. At the same time, the atomized gas containing ammonia is drawn into the gas-water mixture by vacuum assembly 500.

[0077] The water vapor in the ammonia-containing gas is cooled and condensed in the gas-water separation component 600, and the ammonia-containing gas is released into the air.

[0078] The aforementioned wastewater enters the first circulation pipe by means of input through the first wastewater pipe 130 or discharge from the outlet of the flash tank 300.

[0079] The electric heater 200 can heat wastewater at a preset temperature within the range of 50°-70°.

[0080] The specific steps of the deammoniation method in this embodiment are as follows:

[0081] Step 1: Wastewater is sent into the ammonia removal system through the first wastewater pipe 130, the first three-way valve 110, and the water pump 100;

[0082] Step 2: The water pump 100 sends the wastewater through the second three-way valve 120 and the second circulation pipe 160 into the electric heater 200 for heating;

[0083] Step 3: The wastewater after heat treatment enters the flash tank 300 through the third circulation pipe 210 and is supplied to the nozzle 400;

[0084] Step 4: During the process of atomizing and spraying waste by nozzle 400, vacuum pump 520 operates to extract the gas in flash tank 300 to form a vacuum negative pressure state. The liquid wastewater falls to the outlet position under its own weight, and the gas containing a large amount of ammonia enters the separator 610 through the first gas pipe 510 and the second gas pipe 530.

[0085] Step 5: The wastewater in the flash tank 300 enters the first pipeline through the outlet, and the first three-way valve 110 is used to restart the circulation of steps 2-4 to remove ammonia from the wastewater.

[0086] Step 6: The gas entering the separator 610 is discharged from the top exhaust pipe 620. The separator 610 is used for discharge or subsequent recycling. The moisture in the gas condenses and falls into the drain pipe 630 for subsequent cooling of the vacuum pump 520, and enters the drain pipe 640 for discharge into the sewage system for purification.

[0087] Step 7: The liquid in the drain pipe 630 enters the heat sink 700 for cooling, and after cooling, it enters the vacuum pump 520 through the condenser pipe to cool the vacuum pump 520.

[0088] Steps 6 and 7 above can be performed simultaneously.

[0089] The number of ammonia removal cycles in step 5 can be set according to actual needs. In this embodiment, it is preferably set to 10 cycles. After the cycle is completed, the wastewater is discharged from the second wastewater pipe 140 to the sewage system for purification treatment through the control of the second three-way valve 120 and the water pump 100.

[0090] This invention provides an ammonia removal system and method for poultry feather hydrolysis wastewater. Compared to existing technologies, the system utilizes a vacuum assembly 500 to create a vacuum negative pressure in the flash tank 300, significantly lowering the boiling point of water and the Henry's constant of ammonia. This allows ammonia in the wastewater to escape from the liquid phase to the gas phase more efficiently and rapidly at relatively lower operating temperatures. Combined with nozzles 400 atomizing the wastewater into fine droplets, this greatly increases the specific surface area of ​​the wastewater, accelerating the mass transfer rate of dissolved ammonia to gaseous ammonia. The ammonia- and water vapor-rich gas extracted by the vacuum assembly 500 then enters the gas-liquid separation assembly 600, effectively separating ammonia from condensate, ultimately yielding high-purity ammonia while reducing the ammonia content in the wastewater. Furthermore, the closed-loop circulation process allows the wastewater to undergo multiple ammonia removal processes, achieving efficient and deep removal of ammonia nitrogen from the wastewater and ensuring that the ammonia content in the effluent meets environmental protection requirements.

[0091] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A system for removing ammonia from poultry feather hydrolysis wastewater, characterized in that, include: The water pump has a first circulation pipe connected to its inlet and a second circulation pipe connected to its outlet. The first wastewater pipeline is connected to the first circulation pipeline to supply wastewater; The electric heater has an inlet connected to a second circulation pipe and an outlet connected to a third circulation pipe. The flash tank has its inlet connected to the third circulation pipe and its outlet connected to the first circulation pipe. The nozzle is located inside the flash tank, with its inlet connected to the third circulation pipeline to receive wastewater and atomize and spray it inside the flash tank. as well as The vacuum assembly has an inlet connected to the flash tank to create a vacuum negative pressure state by discharging the gas inside the flash tank, and an outlet connected to a gas-liquid separator to separate the ammonia gas and the liquid. The nozzle includes a connecting part and a spraying part that are interconnected. The connecting part is connected to the third circulation pipe. The nozzle of the spraying part is a conical opening that expands from top to bottom and outwards, and faces the outlet direction of the flash tank. The spraying part has a mixing chamber inside, and the outer wall of the spraying part is provided with a number of air holes that connect to the mixing chamber. The third circulation pipe is connected to the inlet of the vacuum assembly. The mixing chamber is equipped with magnets, which form a magnetic field that allows the liquid to pass through; The vacuum pump assembly includes a vacuum pump, a first gas pipeline, and a second gas pipeline. The inlet of the vacuum pump is connected to the first gas pipeline, the other end of the first gas pipeline is connected to the flash tank, the outlet of the vacuum pump is connected to the second gas pipeline, and the other end of the second gas pipeline is connected to the gas-liquid separation assembly. The flash tank is equipped with a vacuum sensor, and the first circulation pipe is equipped with a temperature sensor near the flash tank. The temperature sensor, vacuum sensor, vacuum pump, and electric heater are all connected to a control box via communication or electrical connection.

2. The ammonia removal system for poultry feather hydrolysis wastewater as described in claim 1, characterized in that, The gas-water separation assembly includes a separation tank, an exhaust pipe, and a drain pipe. The exhaust pipe is located at the top of the separation tank and connects to the separation tank. The drain pipe is located at the bottom of the separation tank and connects to the separation tank. The second gas pipeline connects to the separation tank to send gas into the separation tank.

3. The ammonia removal system for poultry feather hydrolysis wastewater as described in claim 2, characterized in that, The other end of the drain pipe is connected to a heat sink, the outlet of the heat sink is connected to a cooling pipe, and the other end of the cooling pipe is connected to the vacuum pump to deliver the cooled liquid to the vacuum pump for cooling.

4. The ammonia removal system for poultry feather hydrolysis wastewater as described in claim 1, characterized in that, The heating temperature of the electric heater is 50°-70°.

5. The ammonia removal system for poultry feather hydrolysis wastewater as described in claim 1, characterized in that, The first circulation pipeline is equipped with a first three-way valve, which is connected to the first wastewater pipeline. The second circulation pipeline is equipped with a second three-way valve, which is connected to the second wastewater pipeline.

6. A method for deammoniation of poultry feather hydrolysis wastewater, applied to the poultry feather hydrolysis wastewater deammoniation system according to any one of claims 1-5, characterized in that, Includes the following steps: Wastewater entering the first circulation pipe is pumped through the third circulation pipe into the electric heater; After the wastewater is heated to the preset temperature, it is transferred from the third circulation pipe to the nozzle. Wastewater is sprayed into the flash tank by atomized liquid from the nozzle, while atomized gas containing ammonia is drawn into the gas-liquid separation unit by the vacuum pumping component. Water vapor in the ammonia-containing gas is cooled and condensed in the gas-water separation component, and the ammonia-containing gas is released into the air.

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