Environment-friendly treatment device for high-salt brine wastewater produced by halogen egg production

Abstract

The application relates to the technical field of wastewater environmental protection treatment, and discloses a halogen egg production high-salt brine wastewater environmental protection treatment device, which comprises an integrated tower reactor, a jet flow dissolved gas microseparation cavity, an in-situ electro-catalytic ultrasonic oxidation cavity and a negative pressure phase change salt analysis cavity which are sequentially arranged in the integrated tower reactor and are interconnected. A tangential water inlet pipe, a Venturi jet device, an inverted conical slag gathering guide plate and a spiral slag scraping mechanism are arranged on the jet flow dissolved gas microseparation cavity. The tangential water inlet pipe and the inverted conical slag gathering guide plate cooperate to make the wastewater generate a cyclone centrifugal force and separate and settle heavy spice slag. The Venturi jet device is connected with an external dissolved gas pump to generate micro-bubbles to hold liquid phase grease and make the liquid phase grease float up. The spiral slag scraping mechanism is used to clean liquid surface floating slag. Different specific gravity solid phase materials and liquid phase grease are simultaneously separated and classified in the same cavity, and the risk of high-concentration suspended solids and grease blocking subsequent treatment components is reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater environmental treatment technology, specifically to an environmental treatment device for high-salt brine wastewater from the production of braised eggs. Background Technology

[0002] The processing of braised eggs generates a large amount of high-salt brine wastewater. This wastewater contains a high concentration of sodium chloride, mixed with emulsified oils, proteins, and a large amount of suspended spice residue. This high-salt brine wastewater needs to be purified and separated using environmentally friendly treatment equipment to meet compliant discharge or resource recovery requirements.

[0003] Existing environmental protection devices for high-salt brine wastewater mostly adopt a parallel-flow water tank series layout. The wastewater is transported by pipelines and flows sequentially through an oil separator and a sedimentation tank. Relying on the gravity potential energy of the water itself, it is left to stand for a long time. Large particles of impurities settle at the bottom of the sedimentation tank, while the floating grease is collected on the surface of the oil separator and then cleaned. After preliminary slag and oil removal, the wastewater flows into the downstream evaporator or biochemical reaction tank for further treatment.

[0004] Existing advection treatment structures are difficult to achieve simultaneous graded separation of multiple specific gravity pollutants in a single space. The stratification method relying on natural gravity cannot effectively capture emulsified oils, resulting in long separation cycles and large equipment footprints for the light oil phase and heavy solid sludge. High-concentration spice suspensions and oils that are not completely separated can easily enter the downstream water treatment unit directly with the water flow, increasing the risk of physical blockage of subsequent treatment components and reducing the stability of continuous equipment operation. To address these issues, an environmentally friendly treatment device for high-salt brine wastewater from braised egg production is proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an environmentally friendly treatment device for high-salt brine wastewater from braised egg production. The aim is to solve the problems in existing technologies where horizontal flow treatment structures struggle to simultaneously achieve graded separation of multiple pollutants by specific gravity within a single space, and relying on natural gravity stratification makes it difficult to effectively capture emulsified oils. This results in incompletely separated high-concentration spice suspensions and oils easily entering downstream treatment units, increasing the risk of physical blockage in subsequent treatment components.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an environmentally friendly treatment device for high-salt brine wastewater from the production of braised eggs, comprising an integrated tower reactor, wherein the integrated tower reactor is provided with interconnected jet dissolved gas micro-separation chamber, in-situ electrocatalytic ultrasonic oxidation chamber and negative pressure phase change salt precipitation chamber arranged sequentially from top to bottom; The jet dissolved gas micro-separation chamber is equipped with a tangential water inlet pipe, a Venturi jet injector and an inverted conical slag-collecting guide plate, and a spiral slag scraping mechanism is provided at the top of the jet dissolved gas micro-separation chamber. The in-situ electrocatalytic ultrasonic oxidation cavity is equipped with a titanium-based ruthenium-iridium anode plate and a porous cathode plate, and an energy-concentrating ultrasonic transducer array is provided outside the in-situ electrocatalytic ultrasonic oxidation cavity. The negative pressure phase change salt precipitation chamber is equipped with an umbrella-shaped thin film distributor at the top, and a jacketed heat transfer oil heating layer is provided on the outside of the negative pressure phase change salt precipitation chamber. The negative pressure phase change salt precipitation chamber is connected to a vacuum extraction port and a condensate recovery port. The bottom of the negative pressure phase change salt precipitation chamber is equipped with a bottom salt collection funnel and a spiral conveyor salt discharge machine.

[0007] Preferably, the tangential water inlet pipe is connected to the interior of the jet dissolved gas micro-separation chamber, the Venturi jet injector is installed on the side wall of the jet dissolved gas micro-separation chamber, and the Venturi jet injector is connected to an external dissolved gas pump.

[0008] Preferably, the inverted conical slag guide plate is fixed to the inner wall of the jet dissolved gas micro-separation chamber.

[0009] Preferably, the spiral scraping mechanism includes a support frame, a drive motor, a spiral scraping impeller, and a slag discharge pipe. The support frame is fixed to the inner wall of the inverted conical slag-gathering guide plate. The drive motor is installed on the top of the integrated tower reactor. The power output end of the drive motor is connected to the top of the spiral scraping impeller. The bottom end of the spiral scraping impeller is rotatably connected to the inner wall of the top of the support frame. The slag discharge pipe connects the inside and outside of the jet dissolved gas micro-separation chamber.

[0010] Preferably, a fixing seat is installed inside the in-situ electrocatalytic ultrasonic oxidation cavity, and multiple sets of titanium-based ruthenium-iridium anode plates and porous cathode plates are alternately fixed on the fixing seat.

[0011] Preferably, the activated carbon particle electrode layer is located below the fixing base.

[0012] Preferably, the focused ultrasonic transducer array is fixed to the outer wall of the in-situ electrocatalytic ultrasonic oxidation cavity, and a protective cover is installed outside the in-situ electrocatalytic ultrasonic oxidation cavity, the protective cover being placed outside the focused ultrasonic transducer array.

[0013] Preferably, the umbrella-shaped film distributor is fixed to the top of the negative pressure phase change salt precipitation chamber, and the jacketed heat transfer oil heating layer covers the outer wall of the negative pressure phase change salt precipitation chamber.

[0014] Preferably, both the vacuum extraction port and the condensate recovery port are located on the outer wall of the negative pressure phase change salt precipitation chamber.

[0015] Preferably, the bottom salt collecting funnel is located at the bottom end of the negative pressure phase change salt precipitation chamber, and the discharge end of the bottom salt collecting funnel is connected to the screw conveyor salt discharge machine.

[0016] This invention provides an environmentally friendly treatment device for high-salt brine wastewater from the production of braised eggs. It has the following beneficial effects: 1. This invention achieves synchronous graded separation of solid substances of different specific gravities and liquid oils within the same chamber by setting a tangential water inlet pipe, a Venturi jet injector, an inverted conical slag-collecting guide plate, and a spiral slag scraping mechanism on the jet dissolved air micro-separation chamber. The tangential water inlet pipe and the inverted conical slag-collecting guide plate work together to generate centrifugal force in the wastewater and separate and settle heavy spice residues. The Venturi jet injector is connected to an external dissolved air pump to generate microbubbles to lift liquid oils to the surface. The spiral slag scraping mechanism then cleans the slag on the liquid surface. This reduces the risk of high-concentration suspended solids and oils clogging subsequent treatment components by setting a tangential water inlet pipe, a Venturi jet injector, an inverted conical slag-collecting guide plate, and a spiral slag scraping mechanism to clean the slag on the liquid surface.

[0017] 2. This invention involves interleaving titanium-based ruthenium-iridium anode plates and porous cathode plates within an in-situ electrocatalytic ultrasonic oxidation chamber, and setting a focused ultrasonic transducer array outside the chamber. The high concentration of chloride ions naturally present in the wastewater generates hypochlorous acid and other oxidizing substances in situ under energized conditions on the electrodes, oxidizing and degrading large molecular proteins and pigments within the wastewater. Simultaneously, the sound waves emitted by the focused ultrasonic transducer array induce cavitation, using physical vibration to peel off passivation substances adhering to the electrode surface, maintaining stable operation of the oxidation reaction and reducing the organic basis for scaling.

[0018] 3. This invention achieves low-temperature evaporation and crystallization of high-salt wastewater and salt recovery by setting an umbrella-shaped thin film distributor at the top of the negative pressure phase change salt precipitation chamber, setting a jacketed heat transfer oil heating layer outside the negative pressure phase change salt precipitation chamber, and connecting a vacuum evacuation port on the side wall. The vacuum evacuation port creates a negative pressure state inside the negative pressure phase change salt precipitation chamber, thereby reducing the boiling point of the water. The water flows through the umbrella-shaped thin film distributor to form a thin film liquid film. The liquid film absorbs the heat transferred by the jacketed heat transfer oil heating layer and performs low-temperature flash evaporation. The precipitated salt falls into the bottom salt collection funnel and is discharged to the outside through a screw conveyor salt discharge machine. This reduces the energy consumption of the phase change process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 Figure 3 This is a schematic diagram of the overall cross-sectional structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the overall cross-sectional structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram showing the disassembled structure of the tangential water inlet pipe, Venturi jet, inverted conical slag-collecting guide plate, and spiral slag scraping mechanism of the present invention. Figure 6 This is a schematic diagram of the internal structure of the in-situ electrocatalytic ultrasonic oxidation cavity of the present invention.

[0020] Among them, 100, integrated tower reactor; 10, jet dissolved air micro-separation chamber; 11, tangential water inlet pipe; 12, Venturi jet injector; 13, external dissolved air pump; 14, inverted conical slag-collecting guide plate; 15, spiral slag scraping mechanism; 151, support frame; 152, drive motor; 153, spiral slag scraping impeller; 154, slag discharge pipe; 20, in-situ electrocatalytic ultrasonic oxidation chamber; 21, fixed seat; 22, titanium-based ruthenium-iridium anode plate; 23, porous cathode plate; 24, activated carbon particle electrode layer; 25, energy-concentrating ultrasonic transducer array; 26, protective cover; 30, negative pressure phase change salt precipitation chamber; 31, umbrella-shaped thin film distributor; 32, jacketed heat transfer oil heating layer; 33, vacuum extraction port; 34, condensate recovery port; 35, bottom salt collection funnel; 36, spiral conveyor salt discharge machine. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example:

[0022] Please see the appendix Figure 1 -Appendix Figure 6This invention provides an environmentally friendly treatment device for high-salt brine wastewater from braised egg production. The high-salt brine wastewater discharged during the production and processing of braised eggs not only has an extremely high sodium chloride concentration but is also rich in complex and difficult-to-degrade pollutants such as emulsified egg yolk oil, soluble macromolecular proteins, soy sauce pigments, and suspended spice residues. Conventional water treatment facilities often employ multi-stage horizontal flow tanks in series, which suffers from technical drawbacks such as large footprint, high energy consumption during material flow, susceptibility to pipe blockage, and the fact that the treated products are mostly hazardous waste. The device provided by this invention completely changes the traditional planar flow layout of environmental protection processes, breaking the existing prejudice that high salinity is an obstacle to biochemical treatment. The inherent chemical properties of wastewater are transformed into favorable conditions for the degradation of organic matter, including the integrated tower reactor 100. As the core component of the entire water treatment system, the integrated tower reactor 100 adopts a vertical cylindrical structure design. It utilizes the gravitational potential energy in the vertical direction to establish a hydraulic gravity flow model, avoiding the need for additional high-power wastewater lift pumps between individual treatment processes. This significantly reduces the overall process's operating energy consumption and pipeline construction investment. The outer shell of the integrated tower reactor 100 is made of high-corrosion-resistant titanium alloy or 316L stainless steel, and the interior is coated with a heavy-duty epoxy resin anti-corrosion coating to rigorously resist high concentrations of organic matter. To mitigate the risks of intergranular corrosion and pitting perforation caused by chloride ions under high salt load and continuous operation conditions, and to ensure the mechanical strength and service life of the pressure-bearing shell, the integrated tower reactor 100 is internally equipped with interconnected jet dissolved gas micro-separation chamber 10, in-situ electrocatalytic ultrasonic oxidation chamber 20, and negative pressure phase change salt precipitation chamber 30, arranged sequentially from top to bottom. This strictly divides the continuous volume within the integrated tower reactor 100 into three independently operating yet fluidly dynamically interconnected reaction spaces. Wastewater undergoes preliminary physical slag and oil removal in the jet dissolved gas micro-separation chamber 10, and then, guided by gravity, flows through the in-situ electrocatalytic ultrasonic oxidation chamber 20 to complete the deep, strong oxidative degradation and complete decolorization of high molecular weight proteins. The salt flows into the negative pressure phase change salt precipitation chamber 30 at the bottom, which realizes vacuum flash evaporation and crystallization desalination driven by a low-grade heat source. The arrangement logic of these three chambers in the height direction is completely in line with the density change law and physical transformation requirements in the wastewater treatment process. The physical separation in the upper part intercepts large particles of solids and sticky grease that are prone to clogging of the precision components in the lower part in advance. The strong oxidation process in the middle completely destroys the organic precursor substances that cause scale to form in the evaporator and eliminates the material basis for Maillard reaction. The negative pressure crystallization at the bottom ensures that high-purity solid white salt is finally produced. The adjacent chambers are equipped with flange connection structures with sealing gaskets, which facilitates the disassembly, cleaning and replacement of individual functional modules by maintenance personnel in the future. Please see the appendix Figure 1 -Appendix Figure 5The jet-flow dissolved air micro-separation chamber 10 is equipped with a tangential inlet pipe 11, a Venturi jet injector 12, and an inverted conical sludge-collecting guide plate 14. Together, these components form the first physical micro-separation purification line against suspended solids and grease. The tangential inlet pipe 11 provides initial fluid kinetic energy, the Venturi jet injector 12 provides microscopic gas-phase lifting intervention, and the inverted conical sludge-collecting guide plate 14 receives and alters the sedimentation and collection trajectory of solid substances. This combined structure breaks away from the inefficient traditional oil separator model that relies solely on gravity for slow stratification, integrating hydraulic centrifugal separation technology with air flotation separation technology in a three-dimensional spatial layer. The tangential inlet pipe 11 connects to the jet-flow dissolved air micro-separation chamber 10. Inside the gas-liquid micro-separation chamber 10, the central axis of the tangential water inlet pipe 11 is geometrically tangential to the cylindrical inner wall of the jet dissolved air micro-separation chamber 10. Wastewater containing high concentrations of organic matter and suspended solids is pressurized by an external high-pressure pump and injected into the jet dissolved air micro-separation chamber 10 through the tangential water inlet pipe 11 at a precisely set flow rate. Due to the kinetic energy of the tangential injection, the wastewater forms a strong swirling flow field that moves downward in a spiral motion inside the jet dissolved air micro-separation chamber 10. The centrifugal force generated by this strong swirling flow field forces the heavier spice residue to overcome the fluid viscosity resistance and move towards the inner wall of the jet dissolved air micro-separation chamber 10, thereby achieving the first stage of centrifugal coarse separation of the solid-liquid mixture. The Venturi jet injector 12 is installed in the jet dissolved air micro-separation chamber. The Venturi jet injector 12 is horizontally connected to the pressure-bearing shell in the lower part of the jet dissolved gas micro-separation chamber 10 via a flange structure on the side wall of the chamber 10. The Venturi jet injector 12 has a typical fluid dynamic cross-sectional change structure with a contraction section, a throat section, and a diffusion section. When the fluid flows at high speed through the throat section, the sharp decrease in the local cross-sectional area causes a sudden surge in fluid velocity, thereby generating a strong negative pressure vacuum zone in the throat region according to Bernoulli's fluid physics principle. This negative pressure environment is a physical prerequisite for introducing external gas for gas-liquid mixing. The inner nozzle of the Venturi jet injector 12 is made of high-strength wear-resistant silicon carbide ceramic material to prevent hard solid particles in the wastewater from causing wear and erosion of the nozzle, ensuring that the jet efficiency does not decrease over a long period. The Venturi jet injector 12 is connected to... An external dissolved air pump 13 has its outlet high-pressure pipe rigidly connected to the gas inlet of the Venturi jet injector 12. The external dissolved air pump 13 continuously draws in ambient air and pressurizes and breaks it up to form a gas-liquid mixture rich in high-pressure microbubbles. The pressurized fluid is continuously forced into the throat of the Venturi jet injector 12. Under the dual physical action of tearing by the negative pressure vacuum in the throat and shearing by the high-speed water flow, the air is cut into nano- and micron-sized microbubbles with diameters between 20 and 50 micrometers. After these microbubbles enter the jet dissolved air micro-separation chamber 10 with the water flow, they quickly collide and physically adhere to the emulsified egg yolk oil and tiny protein flocs in the wastewater. The microbubble cluster, carrying the oil and flocs, generates a huge combined upward buoyancy.The movement direction of light pollutants is forcibly changed, causing them to rise rapidly towards the liquid surface. The inverted conical slag-collecting guide plate 14 is fixed to the inner wall of the jet dissolved gas micro-separation chamber 10. The inverted conical slag-collecting guide plate 14 has a funnel-shaped structure, wider at the top and narrower at the bottom. The outer edge of the top of the inverted conical slag-collecting guide plate 14 is fully welded and sealed to the cylindrical inner wall of the jet dissolved gas micro-separation chamber 10. Heavy spice residue, thrown to the periphery by the centrifugal force of the swirling flow field, slowly slides down the inner wall of the jet dissolved gas micro-separation chamber 10 and finally falls onto the conical surface of the inverted conical slag-collecting guide plate 14. The inclination angle of the inverted conical slag-collecting guide plate 14 is greater than the angle of repose of the solid particles, forcing the heavy sludge to slide towards the central bottom drainage channel. Simultaneously, the inverted conical slag-collecting guide plate 14 physically... The flow field interference between the rising microbubble clusters and the sinking heavy sludge is blocked, preventing the separated solid matter from being re-lifted by the bubbles. This ensures that the air flotation oil removal and centrifugal sludge removal processes do not interfere with each other within the same chamber. A spiral scraping mechanism 15 is installed at the top of the jet dissolved air micro-separation chamber 10. The spiral scraping mechanism 15 is located at the highest liquid level of the jet dissolved air micro-separation chamber 10 and is specifically used to continuously clean and collect the oil and sludge lifted to the water surface by the microbubbles. Through mechanical force, the spiral scraping mechanism 15 can prevent the oil from remaining on the water surface for a long time and becoming putrefied and acidified, or from undergoing secondary emulsification and re-integrating into the water. The spiral scraping mechanism 15 includes a support frame 151, a drive motor 152, a spiral scraping impeller 153, and a sludge discharge pipe 15. 4. The four major mechanical components constitute a complete closed-loop system for surface scum collection and output. The support frame 151 provides the centering and support points for mechanical rotation, the drive motor 152 provides low-speed, high-torque rotational power, the spiral scraper impeller 153 performs the physical pushing and peeling action of directly contacting the scum, and the scum discharge pipe 154 provides the pipeline channel for material to be discharged from the jet dissolved air micro-separation chamber 10. The support frame 151 is fixed to the inner wall of the inverted conical scum-collecting guide plate 14. The support frame 151 adopts a cross-shaped or grid-shaped reinforcing rib structure design, and is firmly welded to the upper half of the inverted conical scum-collecting guide plate 14 without significantly increasing the water flow resistance. The support frame 151 bears the radial runout load and shaft load generated by the spiral scraper impeller 153 during rotation. To ensure the mechanical concentricity of the rotating shaft system under gravity load and prevent the impeller from violently shaking and rubbing against the sidewalls of the chamber during slag scraping, the drive motor 152 is installed on the top of the integrated tower reactor 100. The drive motor 152 adopts an external dry installation method, fixed to the outside of the top end cap of the integrated tower reactor 100. This external layout completely avoids direct contact between the motor's heating components, power cables, and the high-salinity, highly corrosive wastewater vapor inside, eliminating the safety hazards of short circuits, leakage, and metal casing corrosion. It also greatly facilitates daily lubrication, maintenance, and motor repair and replacement. The power output end of the drive motor 152 is connected to the top of the spiral slag scraper impeller 153, and the drive motor 152 is connected to the vertically downward main drive shaft through a reduction gearbox.The main drive shaft passes through the mechanical seal assembly at the top of the integrated tower reactor 100 and is rigidly connected to the top flange of the spiral scraper impeller 153 by high-strength bolts. This converts the high-speed rotating motor power into a low-speed, stable rotating torque, driving the impeller to overcome the viscous resistance of the surface scum and rotate at a constant speed. The bottom end of the spiral scraper impeller 153 is rotatably connected to the inner wall of the top of the support frame 151. The bottom center shaft of the spiral scraper impeller 153 is inserted into the self-lubricating wear-resistant bearing seat at the top of the support frame 151. The bottom support point and the top motor output end together form a double-point supported shaft system. The outer edge of the spiral scraper impeller 153 is arranged with multiple Archimedean spiral-shaped scrapers. When the impeller rotates at a constant speed, the spiral shape... The scraper applies a radiating force from the center to the outer periphery to the grease scum on the water surface, continuously pushing the paste-like scum to the outer area. The scum discharge pipe 154 connects the inside and outside of the jet dissolved gas micro-separation chamber 10. The inlet of the scum discharge pipe 154 is aligned with the annular scum collection trough located on the upper part of the inner wall of the jet dissolved gas micro-separation chamber 10. The outlet of the scum discharge pipe 154 extends downwards through the outer wall of the integrated tower reactor 100. The grease scum pushed to the edge by the spiral scraper impeller 153 falls into the annular scum collection trough under gravity and slides out of the equipment along the inclined angle of the scum discharge pipe 154, flowing into a dedicated waste oil collection tank. The scum discharge pipe 154 achieves efficient grease removal, preventing grease from entering the subsequent electrocatalytic process and adhering to and contaminating the electrode plates. Please see the appendix Figure 1 , Figure 2 , Figure 3 , Figure 4 and attached Figure 6The in-situ electrocatalytic ultrasonic oxidation chamber 20 is equipped with a titanium-based ruthenium-iridium anode plate 22 and a porous cathode plate 23. The in-situ electrocatalytic ultrasonic oxidation chamber 20 is the core chemical conversion reaction site for achieving wastewater decolorization and complete mineralization of organic matter. The titanium-based ruthenium-iridium anode plate 22 uses a metallic titanium plate as the conductive substrate and is coated with a mixed coating of rare and precious metals such as ruthenium oxide and iridium oxide. This stable anode material has an extremely low chloride evolution potential, enabling it to highly efficiently oxidize the high concentration of chloride ions naturally present in the wastewater into highly active hypochlorous acid and hydroxyl radicals under energized conditions. The porous cathode plate 23 is made of porous stainless steel or graphene composite material. The numerous uniformly distributed perforations on the plate surface not only significantly reduce the resistance to water flow but also increase the surface area of ​​the cathode. The hydrogen evolution area is determined by a mounting base 21 installed inside the in-situ electrocatalytic ultrasonic oxidation cavity 20. The mounting base 21 is injection molded from a high-molecular material such as polytetrafluoroethylene (PTFE), which is insulating and resistant to strong acids and oxidants. The mounting base 21 is distributed on the inner walls of opposite sides of the in-situ electrocatalytic ultrasonic oxidation cavity 20, providing multiple parallel mechanical slots. The mounting base 21 not only serves a mechanical bearing function but, more importantly, provides strict electrical insulation between the titanium-based ruthenium-iridium anode plate 22 and the porous cathode plate 23, preventing physical short circuits and arcing between the positive and negative plates. Multiple sets of titanium-based ruthenium-iridium anode plates 22 and porous cathode plates 23 are staggered and fixed to the mounting base 21, and are vertically inserted into the mounting base 21 according to an alternating pattern of positive and negative electrodes. In the insulating slot of 1, fluid channels with a specific spacing are formed between two adjacent electrode plates. The staggered arrangement forces the water flow to form a baffled or serpentine water path in the gap between the electrode plates, which greatly prolongs the hydraulic residence time of high-salt wastewater in the strong electric field area. During the tortuous process of the wastewater, large protein molecules and soy sauce pigment molecules are repeatedly bombarded by hypochlorous acid and hydroxyl radicals generated in situ, and the chemical bonds are completely broken, degrading them into harmless small molecules or directly oxidizing them to produce carbon dioxide and water, achieving deep decolorization and deodorization. The in-situ electrocatalytic ultrasonic oxidation chamber 20 is lined with an activated carbon particle electrode layer 24. The activated carbon particle electrode layer 24 is composed of a large number of granular activated carbon particles with a surface rich in microporous structure. The activated carbon particles themselves have Possessing excellent adsorption performance, it can enrich organic residues in wastewater at the microscopic level. The introduction of activated carbon particle electrode layer 24 establishes a three-dimensional electrode system, breaking the spatial electric field blind zone between traditional two-dimensional flat plates. The activated carbon particle electrode layer 24 is located below the fixed base 21. When wastewater treated through the electrode gap flows downwards through the activated carbon particle electrode layer 24, the kinetic energy of the water flow drives the granular activated carbon to a dynamically suspended fluidized bed state. Under the induction of the external electric field, the fluidized activated carbon particles undergo electrostatic polarization, with each activated carbon particle forming a tiny, independent anode and cathode at both ends. This is equivalent to adding countless micro-electrolysis reactors between the macroscopic titanium-based ruthenium-iridium anode plate 22 and the porous cathode plate 23.These micro-electrolytic reactors further increase the catalytic specific surface area of ​​the oxidation reaction, completely eliminating trace amounts of recalcitrant organic matter remaining in the wastewater and preventing activated carbon particles from caking and clogging under long-term static accumulation. An energy-concentrating ultrasonic transducer array 25 is installed outside the in-situ electrocatalytic ultrasonic oxidation chamber 20. This array consists of dozens of high-frequency piezoelectric ceramic transducers arranged in a matrix. The energy-concentrating ultrasonic transducer array 25 continuously emits high-frequency oscillating sound waves with frequencies between 20kHz and 40kHz into the in-situ electrocatalytic ultrasonic oxidation chamber 20. The sound wave energy vertically... The ultrasonic waves penetrate the metal cavity wall and act on the liquid flow field between the electrode plates. As the ultrasound propagates in the liquid, it induces a strong acoustic cavitation effect, generating tens of thousands of tiny cavitation bubbles. These cavitation bubbles expand instantaneously and then violently collapse, releasing localized extreme high-temperature and high-pressure micro-jets. The focused ultrasonic transducer array 25 is fixed to the outer wall of the in-situ electrocatalytic ultrasonic oxidation cavity 20 using an external bonding and fixing installation mode. The focused ultrasonic transducer array 25 is completely free from direct contact with the highly corrosive wastewater inside, significantly extending the service life of the ultrasonic transducer. The high-frequency ultrasonic oscillations are transmitted to the electrode surface... The surface of the titanium-based ruthenium-iridium anode plate 22 and porous cathode plate 23 is continuously vibrated and cleaned using mechanical peeling force. This physical cleaning mechanism thoroughly removes protein passivation films and inorganic scale that may adhere to the electrode surface, fundamentally solving the industrial application pain point that high-concentration organic wastewater can easily lead to electrode deactivation. This allows the in-situ electrocatalytic reaction to maintain peak oxidation efficiency for a long time. The in-situ electrocatalytic ultrasonic oxidation chamber 20 is equipped with a protective cover 26, which is made of lightweight aluminum alloy or fiberglass material and is stamped. The protective cover 26 surrounds the energy-concentrating ultrasonic transducer array 25 and is filled with... Filled with polyurethane sound-absorbing foam, the protective cover 26 provides isolation protection against external physical impacts and water splashes in the workshop. The protective cover 26 is positioned outside the energy-concentrating ultrasonic transducer array 25. The protective cover 26 significantly attenuates the harsh high-frequency noise radiated into the workshop environment by the high-frequency ultrasonic transducer during operation, controlling the operating noise within the decibel levels specified by occupational health and safety standards, thus improving the acoustic environment for on-site operators. Simultaneously, the enclosed space of the protective cover 26 facilitates the centralized heat dissipation and cooling of the components, ensuring that the piezoelectric ceramic outputs sound wave energy within a stable temperature range. Please see the appendix Figure 1 -Appendix Figure 4An umbrella-shaped thin-film distributor 31 is installed at the top of the negative pressure phase change salt precipitation chamber 30. Clean, high-salt water, after undergoing mid-stage decolorization and deep organic matter removal, flows into the chamber. Since the organic matter has been thoroughly mineralized and degraded in the mid-stage, the water no longer has the material basis for Maillard reaction and carbonization / scaling. The umbrella-shaped thin-film distributor 31 has a downward-spreading inverted umbrella shape and a polished surface. It is fixed at the top of the negative pressure phase change salt precipitation chamber 30, with the inlet pipe directly facing the center of the distributor. When the high-salt water impacts the top of the distributor, the water flow rapidly disperses in all directions under the physical guidance of the umbrella surface, forming an extremely thin and continuous liquid film. This film distribution greatly increases the interaction between the high-salt water and the negative pressure phase change salt precipitation chamber 30. The increased gas-liquid contact surface area under high pressure accelerates the evaporation phase change rate of water molecules, preventing water from falling directly to the bottom in the form of a large water column, thus avoiding uneven heating. A jacketed heat transfer oil heating layer 32 covers the outer wall of the negative pressure phase change salt precipitation chamber 30, forming an annular cavity enclosing the main pressure-bearing shell. High-temperature heat transfer oil or low-grade waste steam condensate from the factory circulates inside the jacketed heat transfer oil heating layer 32. Utilizing the existing waste heat resources of the braised egg production plant, heat is evenly conducted to the interior of the negative pressure phase change salt precipitation chamber 30 through the metal shell wall. The jacketed heat transfer oil heating layer 32 is installed outside the negative pressure phase change salt precipitation chamber 30, and its heat exchange area covers the lower middle part of the negative pressure phase change salt precipitation chamber 30. The main water storage area is externally encased in heating, avoiding the drawback of traditional internal heat exchange coils being easily encased and buried by crystalline salt particles, thus losing their heat conduction capacity. The wide heating area ensures that the internal liquid can maintain a stable phase change evaporation temperature, promoting the continuous conversion of water into vapor. The negative pressure phase change salt precipitation chamber 30 is connected to a vacuum extraction port 33 and a condensate recovery port 34. The vacuum extraction port 33 is responsible for extracting non-condensable gases and maintaining a negative pressure state, while the condensate recovery port 34 is responsible for discharging pure water that has been converted into liquid. The two work together to complete the physical separation and recovery of water vapor. Both the vacuum extraction port 33 and the condensate recovery port 34 are located on the outer wall of the negative pressure phase change salt precipitation chamber 30. The vacuum extraction port 33 is connected to an external high-power water ring vacuum pump assembly, which continuously pumps the negative pressure water vapor into liquid. Air is extracted from the pressure phase change salt precipitation chamber 30, creating a deep negative pressure vacuum. Under this negative pressure, the boiling point of the liquid decreases significantly. High-salt water can undergo vigorous boiling and flash crystallization at a low temperature of 50°C to 60°C. This low-temperature flash evaporation significantly reduces the system's heating energy consumption. The high-purity water vapor generated by evaporation rises and condenses into water droplets upon contact with the cooling heat exchange tubes on the upper side wall. These droplets collect at the condensate recovery port 34 and are discharged outside the equipment. This recovered pure condensed distilled water can be directly transported back to the cleaning workshop of the braised egg factory for recycling, maximizing water conservation. The bottom of the negative pressure phase change salt precipitation chamber 30 is equipped with a bottom salt collection funnel 35 and a spiral conveyor salt discharge machine 36. As water evaporates and is extracted...As the brine concentration inside the negative pressure phase change salt precipitation chamber 30 gradually exceeds the supersaturation critical point, pure sodium chloride crystals begin to precipitate and settle in large quantities. The bottom salt collecting funnel 35 and the screw conveyor salt discharger 36 are responsible for removing the precipitated solid salt from the closed negative pressure system. The bottom salt collecting funnel 35 is located at the bottom of the negative pressure phase change salt precipitation chamber 30. The bottom salt collecting funnel 35 adopts a large-angle conical constriction design. The steep angle of the conical surface ensures that the settled crystalline salt particles do not accumulate and adhere to the inner wall, but rather slide smoothly to the bottom discharge port area by their own gravity. The conical structure plays a role in concentrating and gathering the scattered salt crystals. The bottom salt collecting funnel 35... The material end is connected to a screw conveyor salt discharger 36, which is installed horizontally or inclined at the bottom. The screw conveyor salt discharger 36 has a multi-stage variable pitch auger inside. During the rotational conveying of crystalline salt, the salt discharger utilizes the compacted salt plug layer to provide a physical seal, preventing external air from flowing back and disrupting the vacuum environment inside the negative pressure phase change salt precipitation chamber 30. The produced white crystalline salt has high dryness and purity, fully meeting the standards for the sale of industrial by-product salt. This completely transforms hazardous waste salt, which previously required costly outsourcing for disposal, into an economically valuable resource, achieving zero discharge and deep resource recycling of wastewater from braised egg production.

[0023] Working Principle: The high-salt brine wastewater generated during the production of braised eggs is pressurized by external equipment and tangentially injected into the jet-flow dissolved air micro-separation chamber 10 through the tangential inlet pipe 11. Inside the jet-flow dissolved air micro-separation chamber 10, the wastewater forms a downward-moving swirling flow field. The heavy spice residue in the wastewater is subjected to centrifugal force and moves towards the inner wall of the jet-flow dissolved air micro-separation chamber 10. The heavy spice residue falls along the inner wall of the jet-flow dissolved air micro-separation chamber 10 and slides down the inclined surface of the inverted conical residue-collecting guide plate 14 to collect. Simultaneously, the external dissolved air pump 13 pressurizes ambient air and delivers it to the Venturi jet injector 12. The Venturi jet injector 12 then... The rapid action generates local negative pressure, shearing the air into microbubbles and releasing them into the jet dissolved air micro-separation chamber 10. The microbubbles move upward and physically combine with the emulsified oil and protein flocs inside the wastewater. The microbubble clusters carry the emulsified oil and protein flocs to the highest liquid level position in the jet dissolved air micro-separation chamber 10. The drive motor 152 starts and drives the spiral scraper impeller 153 to rotate at a constant speed on the support frame 151. The spiral scraper impeller 153 pushes the scum accumulated on the liquid surface to the outside. The scum finally falls into the collection structure and is discharged outside the integrated tower reactor 100 through the scum discharge pipe 154. Wastewater that has undergone centrifugal slag removal and air flotation oil removal is guided downwards by gravity into the in-situ electrocatalytic ultrasonic oxidation chamber 20. The wastewater enters the staggered slot area on the fixed base 21, forming a meandering, baffled water path between the titanium-based ruthenium-iridium anode plate 22 and the porous cathode plate 23. Under energized conditions, the high concentration of chloride ions inside the wastewater undergoes an electrochemical reaction on the surface of the titanium-based ruthenium-iridium anode plate 22, directly converting into hypochlorous acid and hydroxyl radicals. These hypochlorous acid and hydroxyl radicals oxidize and degrade large molecular proteins and pigments in the wastewater. The water continues to flow downwards, passing through the activated carbon particle electrode layer 24. The flow of water can cause the activated carbon particles to be suspended. Under the action of an electric field, the activated carbon particles are electrostatically polarized, which can deeply catalyze the oxidation of residual recalcitrant organic matter. Throughout the electrochemical reaction, the focused ultrasonic transducer array 25 continuously emits high-frequency sound waves into the in-situ electrocatalytic ultrasonic oxidation cavity 20. The high-frequency sound waves induce cavitation in the liquid and use mechanical vibration force to peel off the organic passivation material attached to the surface of the titanium-based ruthenium-iridium anode plate 22 and the porous cathode plate 23. The protective cover 26 provides sound insulation protection for the focused ultrasonic transducer array 25 and reduces noise radiation. Subsequently, the highly saline purified water, after thorough mineralization and degradation of organic matter, continues to flow downwards into the negative pressure phase change salt precipitation chamber 30. The high-salt water contacts the umbrella-shaped thin-film distributor 31, spreading out along the umbrella surface to form an expanded thin-film liquid film. An external vacuum pump connected to the vacuum port 33 continuously evacuates the interior of the negative pressure phase change salt precipitation chamber 30, maintaining a negative pressure vacuum environment. The jacketed heat transfer oil heating layer 32 transfers heat from an external low-grade heat source to the interior of the negative pressure phase change salt precipitation chamber 30. Under negative pressure, the boiling point of the high-salt water significantly decreases, and the thin-film high-salt water absorbs heat and undergoes a low-temperature reaction. During the flash evaporation phenomenon, water rapidly transforms into water vapor. The rising water vapor condenses upon encountering cold air, forming pure condensate. The condensate is discharged and recovered through the condensate recovery port 34. As the liquid water continues to evaporate and be extracted, the salt concentration inside the negative pressure phase change salt precipitation chamber 30 exceeds the saturation point, and a large amount of sodium chloride crystals precipitate and settle into the bottom salt collection funnel 35. The conical structure of the bottom salt collection funnel 35 gathers the crystallized salt towards the bottom center. The screw conveyor salt discharge machine 36 starts rotating, continuously conveying and discharging the crystallized salt gathered at the discharge end of the bottom salt collection funnel 35 to the outside of the equipment, completing the complete separation and recovery of salt and water.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly treatment device for high-salt brine wastewater from braised egg production, characterized in that, The integrated tower reactor (100) includes, from top to bottom, a jet dissolved gas micro-separation chamber (10), an in-situ electrocatalytic ultrasonic oxidation chamber (20), and a negative pressure phase change salt precipitation chamber (30). The jet dissolved air micro-separation chamber (10) is provided with a tangential water inlet pipe (11), a Venturi jet injector (12) and an inverted conical slag-collecting guide plate (14), and a spiral slag scraping mechanism (15) is provided at the top of the jet dissolved air micro-separation chamber (10). The in-situ electrocatalytic ultrasonic oxidation cavity (20) is provided with a titanium-based ruthenium-iridium anode plate (22) and a porous cathode plate (23), and an energy-concentrating ultrasonic transducer array (25) is provided outside the in-situ electrocatalytic ultrasonic oxidation cavity (20). The negative pressure phase change salt precipitation chamber (30) is provided with an umbrella-shaped thin film distributor (31) at the top, and a jacketed heat transfer oil heating layer (32) is provided outside the negative pressure phase change salt precipitation chamber (30). The negative pressure phase change salt precipitation chamber (30) is connected to a vacuum extraction port (33) and a condensate recovery port (34). The bottom of the negative pressure phase change salt precipitation chamber (30) is provided with a bottom salt collection funnel (35) and a spiral conveyor salt discharge machine (36).

2. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The tangential water inlet pipe (11) is connected to the interior of the jet dissolved gas micro-separation chamber (10), the Venturi jet nozzle (12) is installed on the side wall of the jet dissolved gas micro-separation chamber (10), and the Venturi jet nozzle (12) is connected to an external dissolved gas pump (13).

3. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The inverted conical slag guide plate (14) is fixed to the inner wall of the jet dissolved gas micro-separation chamber (10).

4. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The spiral scraping mechanism (15) includes a support frame (151), a drive motor (152), a spiral scraping impeller (153), and a slag discharge pipe (154). The support frame (151) is fixed to the inner wall of the inverted conical slag-gathering guide plate (14). The drive motor (152) is installed on the top of the integrated tower reactor (100). The power output end of the drive motor (152) is connected to the top of the spiral scraping impeller (153). The bottom end of the spiral scraping impeller (153) is rotatably connected to the inner wall of the top of the support frame (151). The slag discharge pipe (154) connects the inside and outside of the jet dissolved gas micro-separation chamber (10).

5. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The in-situ electrocatalytic ultrasonic oxidation cavity (20) is equipped with a fixing seat (21), and multiple sets of titanium-based ruthenium-iridium anode plates (22) and porous cathode plates (23) are alternately fixed on the fixing seat (21).

6. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 5, characterized in that, The in-situ electrocatalytic ultrasonic oxidation cavity (20) is lined with an activated carbon particle electrode layer (24), which is located below the fixing seat (21).

7. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The focused ultrasonic transducer array (25) is fixed to the outer wall of the in-situ electrocatalytic ultrasonic oxidation cavity (20), and a protective cover (26) is installed on the outside of the in-situ electrocatalytic ultrasonic oxidation cavity (20). The protective cover (26) covers the outside of the focused ultrasonic transducer array (25).

8. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The umbrella-shaped thin film distributor (31) is fixed to the top of the negative pressure phase change salt precipitation chamber (30), and the jacketed heat transfer oil heating layer (32) covers the outer wall of the negative pressure phase change salt precipitation chamber (30).

9. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The vacuum extraction port (33) and the condensate recovery port (34) are both located on the outer wall of the negative pressure phase change salt precipitation chamber (30).

10. The environmentally friendly treatment device for high-salt brine wastewater from braised egg production according to claim 1, characterized in that, The bottom salt collection funnel (35) is located at the bottom end of the negative pressure phase change salt precipitation chamber (30), and the discharge end of the bottom salt collection funnel (35) is connected to the spiral conveyor salt discharge machine (36).

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