Ozone catalytic oxidation coupled coagulation high-salinity wastewater organic matter treatment device and method

Abstract

The application discloses a kind of high-salinity wastewater organic matter processing device and method of ozone catalytic oxidation coupling coagulation, belong to wastewater advanced treatment technical field.The device adopts the integrated structure of reaction zone and co-wall with sedimentation zone, and is separated by partition in the middle.The core innovation is that special mixing device is arranged in the reaction zone, the paddle of the device is hollow cube enclosed by screen, and catalyst is filled inside.The structure can realize ozone catalytic oxidation and coagulation synchronous ozonation, and simultaneously, organic matter is degraded efficiently, and physical barrier coagulation floc is attached to the surface of catalyst, which fundamentally solves the technical bottleneck of catalyst easy pollution and easy deactivation.After reaction, water flows over the partition into the sedimentation zone, and high-efficiency solid-liquid separation is realized by inclined plate group.The application has compact structure, short and efficient process, high treatment efficiency and stable operation, and is particularly suitable for treating high-salinity refractory organic wastewater generated in energy chemical industry, pharmaceutical industry, printing and dyeing industry and the like.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology and relates to the integrated application of advanced oxidation technology and coagulation sedimentation process in wastewater treatment. Specifically, it is a device and method for treating organic matter in high-salt wastewater by ozone catalytic oxidation coupled with coagulation. Background Technology

[0002] The energy and chemical industry is a water-intensive and highly polluting sector, and the large amounts of wastewater generated have become a prominent challenge for regional environmental governance. In particular, the high-salt organic wastewater generated within this industry is not only large in volume and difficult to treat, but is also one of the major bottlenecks currently hindering the green and sustainable development of the energy and chemical industry. This type of wastewater contains not only high concentrations of inorganic salts (such as Cl-), but also... - SO4 2- Na + High-salt environments often contain salt concentrations reaching tens of thousands of mg / L, as well as recalcitrant organic matter such as aromatic compounds, heterocyclic compounds, and synthetic organic compounds. The chemical oxygen demand (COD) is typically several thousand or even tens of thousands of mg / L. These high-salt environments strongly inhibit and toxicize the cell structure and metabolism of microorganisms, causing traditional biological treatment methods, such as the activated sludge process, to face difficulties in starting up, low treatment efficiency, and even system collapse, severely limiting their application.

[0003] Advanced oxidation technologies (AOPs) are considered effective methods for treating recalcitrant organic wastewater. Among them, ozone oxidation technology has attracted much attention due to its strong oxidizing power, lack of secondary pollution (no sludge production), and ability to destroy chromophores. However, the reaction between ozone and organic matter is selective; for some stubborn organic compounds (such as phenols), its oxidation efficiency is limited. Furthermore, ozone has low solubility in water and poor mass transfer efficiency, resulting in unsatisfactory overall utilization rate and organic matter mineralization (measured by TOC removal rate) of ozone oxidation alone. To improve the utilization efficiency and oxidizing capacity of ozone, ozone catalytic oxidation technology has been developed. This technology uses catalysts (such as metal oxides and supported catalysts) to catalyze the decomposition of ozone, generating more potent and non-selective hydroxyl radicals (·OH), thereby achieving efficient degradation of organic matter.

[0004] Meanwhile, coagulation and sedimentation, as a mature physicochemical treatment technology, is often used to remove colloids, suspended solids, and organic matter from wastewater. Theoretically, combining ozone catalytic oxidation with coagulation can create a complementary effect: catalytic oxidation decomposes large, recalcitrant organic molecules into smaller intermediate products, directly reducing COD and, more importantly, improving the coagulability of the wastewater; subsequently, the coagulation unit effectively removes tiny suspended particles and some hydrophilic intermediate products generated during oxidation, significantly reducing effluent turbidity and residual COD.

[0005] However, in practical applications and existing equipment, these two processes are usually combined in a "series" manner, i.e., catalytic oxidation is performed first, followed by coagulation, or coagulation pretreatment is performed first, followed by catalytic oxidation. This series mode has inherent drawbacks. First, it requires two independent reaction structures or equipment units, resulting in a lengthy process flow, large footprint, and high infrastructure investment. Second, and more importantly, in reactors where catalytic oxidation and coagulation occur simultaneously, the flocs generated by coagulation easily coat and adhere to the surface of catalyst particles, rapidly covering their active sites, leading to catalyst "poisoning" and deactivation, and a sharp decline in reaction efficiency within a short period. Frequent catalyst cleaning, replacement, or regeneration not only significantly increases the system's operation and maintenance costs but also causes production interruptions, placing enormous pressure on the company's continuous operation.

[0006] Furthermore, existing integrated reactors often overlook the complex impact of high salinity on the reaction process and the optimization of fluid dynamics between the catalytic and coagulation zones when treating high-salinity organic wastewater. Insufficient mixing leads to low reaction efficiency; excessive shear force can easily break down the resulting flocs, affecting subsequent sedimentation. Therefore, developing a compact, integrated device that can efficiently couple ozone catalytic oxidation and coagulation within a single reactor, fundamentally prevent catalyst contamination, and optimize internal flow field mass transfer and integrated solid-liquid separation functions has become an urgent need to solve the challenges of high-salinity organic wastewater treatment and drive technological upgrades. Summary of the Invention

[0007] To overcome the shortcomings of the existing technologies, such as lengthy process flow, easy catalyst contamination and deactivation, low reaction efficiency, and high operating costs, the present invention aims to provide a device and method for treating organic matter in high-salt wastewater by coupled ozone catalytic oxidation and coagulation. This device is an integrated reaction device. Through its unique structural design, it achieves efficient synergy between ozone catalytic oxidation and coagulation-induced ozonation, completing the deep degradation and flocculation process of organic matter in a single reaction tank, and effectively solving the technical problem of catalyst active sites being covered by flocs.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A device for treating organic matter in high-salt wastewater using ozone catalytic oxidation coupled with coagulation is based on a shared-wall shell. This shared-wall construction refers to dividing the space within a single, complete shell 15 into interconnected zones. In this invention, the shell is divided into a reaction zone and a sedimentation zone by partitions, for example, by two vertical partitions, No. 1 and No. 2.

[0009] Compared to traditional separate construction methods, the integrated structure of this invention achieves a reduction in floor space through two core design features. First, the reaction zone and sedimentation zone are constructed with a shared wall, completely eliminating the construction and maintenance access points required between independent structures in traditional processes. Second, internal hydraulic connection eliminates the need for external pipes, pipe corridors, and pumping systems connecting the two tanks. Through system optimization, this integrated device can reduce the floor space by approximately 40%-50% compared to the traditional separate construction method, significantly reducing the footprint and equipment piping, resulting in substantial engineering and economic advantages.

[0010] The reaction zone is equipped with a stirring device at its center. The inventive improvement of this invention lies in the fact that the impeller of the stirring device is a hollow cubic chamber structure enclosed by a screen with a specific aperture, which is filled with a solid catalyst. This structure cleverly encapsulates the catalyst within a physically isolated unit. The aperture of the screen is precisely designed, typically 0.1-1.0 mm, preferably 0.5 mm, allowing water molecules, ozone, dissolved organic matter, and reactive oxygen free radicals to pass freely while effectively blocking flocs formed during coagulation from entering the hollow cavity. This fundamentally prevents flocs from adhering to and covering the active sites on the catalyst surface.

[0011] The stirring device of the present invention consists of a drive motor at the top, a stirring shaft connected thereto, and blades fixed to the shaft by a connecting member. The stirring shaft is connected to the blades by an octagonal cubic connecting member; the stirring shaft, blades, and connecting member are made of corrosion-resistant material.

[0012] The inlet of the reaction zone is preferably designed at the bottom, and a coagulant dosing pipe is connected to the inlet. The inlet and the coagulant dosing pipe are used to introduce wastewater and chemicals, respectively. Similarly, the ozone inlet of the reaction zone is preferably designed at the bottom and connected to microporous aerators distributed at the bottom of the reaction zone to ensure that ozone is uniformly dispersed in the form of microbubbles. A channel is provided at the top of the reaction zone, allowing the treated water to overflow naturally into the adjacent sedimentation zone.

[0013] The sedimentation zone is equipped with inclined plates to significantly increase the settling area and improve separation efficiency. An outlet is located at the top of the sedimentation zone for discharging compliant clean water; the bottom features a conical sludge hopper with a sedimentation sludge discharge pipe for concentrating and discharging settled sludge.

[0014] The processing procedure, principle, and synergistic effects of this invention are as follows: Coagulant is added through the coagulant dosing pipe and thoroughly mixed with the high-salinity wastewater before being introduced into the reaction zone through the inlet. Simultaneously, ozone is injected through the ozone inlet via a microporous aeration head. The stirring device is activated to ensure thorough mixing and contact between the high-salinity wastewater, ozone, coagulant, and solid catalyst, promoting a synergistic reaction between ozone catalytic oxidation and coagulation. This generates active oxygen components that degrade organic matter and form flocs. A screen prevents the flocs from adhering to the surface of the solid catalyst. At this point, three key processes occur simultaneously within the system: 1. Catalytic effect: The catalyst and added inorganic salt coagulant packed in the blades come into full contact with ozone and wastewater, efficiently catalyzing the decomposition of ozone to generate a large number of highly oxidizing hydroxyl radicals (·OH) and other active oxygen components, which non-selectively and rapidly oxidize and decompose the recalcitrant organic matter in the wastewater.

[0015] 2. Coagulation: Under the action of ozone and active oxygen components, some organic matter is oxidized and undergoes chain breaking and ring opening, resulting in a decrease in molecular weight and an increase in hydrophilicity. At the same time, inorganic salt coagulants react with colloidal particles in wastewater through adsorption, charge neutralization, and cloth sweeping, forming flocs that are easy to settle.

[0016] 3. Synergistic and Protective Effects: This is the core of the invention. The hydraulic shearing and circulating flow generated by the rotation of the stirring device greatly promotes the exchange of matter and energy transfer between the "catalytic oxidation zone" (near the impeller) and the "coagulation reaction zone" (the main body of the reaction tank). On the one hand, the newly generated active oxygen components are rapidly carried to the entire reaction tank, fully contacting the organic matter in the high-salt organic wastewater, achieving "deep oxidation." On the other hand, this dynamic environment keeps the flocs generated by coagulation constantly renewed, making it difficult for them to stably adhere to the screen surface of the catalyst impeller. That is, because the stirring device creates turbulence and shear force fields in the reaction zone, this dynamic hydraulic environment keeps the flocs constantly being washed and renewed, making it difficult for them to stably and for a long time adhere to the screen. Furthermore, the screen is preferably made of a smooth, chemically inert material such as 304 / 316L stainless steel. Its low surface energy characteristics make it difficult for the flocs to adhere firmly through van der Waals forces and other forces. Thus, the screen constitutes a physical barrier, fundamentally preventing flocs from entering and contaminating the catalyst, ensuring the long-term stability of the catalyst activity.

[0017] The mixed liquor, after synergistic reaction, overflows from the top of the reaction zone and enters the sedimentation zone through its top channel. In the sedimentation zone, the water flow carries the flocs upward, and under the action of the inclined plate group, the flocs quickly settle to achieve solid-liquid separation. The clear water rises, and the supernatant is discharged from the outlet in compliance with standards or reused. The sludge settles to the conical sludge hopper under gravity and is then discharged from the sedimentation sludge discharge port at regular intervals.

[0018] In one embodiment, vertical partitions 1 and 2 are arranged parallel to each other and spaced apart, along the direction from the reaction zone to the sedimentation zone. The top of vertical partition 1 is suspended, and the bottom of vertical partition 2 is suspended, forming a channel connecting the reaction zone and the sedimentation zone. Vertical partitions 1 and 2 are fixedly installed inside the housing, separating the reaction zone and the sedimentation zone. The only fluid channel between them is the area between vertical partitions 1 and 2.

[0019] In one embodiment, the solid catalyst is a metal oxide or a supported catalyst, including but not limited to metal oxides supported on Mn2O3, Fe2O3, or activated carbon, with a filling volume ratio of 30%-50% in the impeller. The stirring shaft of the stirring device is connected to the impeller via an octahedral cubic connecting member. The driving motor of the stirring device is a variable frequency motor, which drives the stirring device at a speed range of 50-300 r / min, preferably 100-200 r / min, to form an enhanced hydraulic circulation in the reaction zone, promote the mass transfer process between the catalytic zone and the coagulation zone, and achieve efficient generation of active oxygen substances through the synergistic reaction of ozone catalytic oxidation and coagulation ozonation.

[0020] In one embodiment, the inclined plate group has an inclination angle of 45°-60°, a plate spacing of 5-10 cm, an effective settlement height of 50-100 cm, and is fixed by a horizontal perforated support plate.

[0021] In one embodiment, the housing, reaction zone, precipitation zone, vertical partition 1, and vertical partition 2 of the device of the present invention are all made of corrosion-resistant materials, including stainless steel or polyethylene.

[0022] In one embodiment, the blades can be further optimized as follows: The cube is optimized into a streamlined profile with a blunt front and a sharp rear. This significantly reduces stirring resistance and energy consumption, while also making the streamline smoother and reducing hydraulic shear breakage of the already formed flocs.

[0023] In one embodiment, the screen can be further optimized as follows: The probes of miniature pH or oxidation-reduction potential (ORP) sensors are inserted into the impeller through a sealed structure. This allows for direct monitoring of the chemical properties of the catalyst microenvironment, providing the most direct data support for precise control of ozone dosage and assessment of reaction progress, thus achieving precise control.

[0024] Using catalytically active materials as the screen material, or loading a nano-catalytic coating onto its surface, imbues the screen itself with catalytic capabilities, further enhancing the catalytic efficiency of the entire system.

[0025] Applying a superhydrophobic nano-coating to the outer surface of the screen reduces the adhesion of flocs to the screen surface, making them easier to wash away under fluid shear, thus achieving a self-cleaning effect.

[0026] On the same paddle screen, a gradient aperture that gradually increases from the inside to the outside is designed (e.g., 0.2 mm on the inside and 0.5 mm on the outside), thereby forming a "screening" effect from the inside out to prevent external flocs from penetrating.

[0027] In one embodiment, the TDS content of the high-salt wastewater is greater than 10,000 mg / L, and the difficult-to-treat organic matter is mainly phenolic substances, with a COD content of 100~1000 mg / L.

[0028] In one embodiment, the ozone dosage in the reaction zone is 10-100 mg / L, the hydraulic retention time is 10-60 min, and the motor speed of the stirring device is 100-200 r / min; the hydraulic retention time in the sedimentation zone is 5-30 min.

[0029] In one embodiment, when the influent COD of the reaction zone is 500-5000 mg / L, the effluent COD drops to 50-200 mg / L, and the organic matter removal rate can reach over 90%.

[0030] Compared with the prior art, the beneficial effects of the present invention are: 1. Highly integrated structure with significantly reduced footprint: This invention innovatively integrates the reaction zone and the inclined plate sedimentation zone into a single device through a shared-wall shell and internal partitions. This integrated design completely eliminates the connecting pipes and transition structures required by traditional separate processes, reducing the system footprint by approximately 40%-50% compared to the traditional series mode. The equipment structure is extremely compact, the process is short and efficient, and infrastructure costs and construction time are reduced simultaneously.

[0031] 2. Core Innovation Eliminates Catalyst Deactivation Problem, Ensuring Long-Term Stability: This invention utilizes a "hollow screen impeller" structure to physically encapsulate the catalyst within the impeller. The precise pore size of the screen (0.1-1.0 mm) forms a selective barrier, effectively preventing the encapsulation and coverage of catalyst active sites by flocculated particles, thus fundamentally solving the core problem of catalyst deactivation due to "poisoning." This extends catalyst lifespan, significantly reduces system maintenance frequency and costs, and ensures the continuity and stability of the treatment process.

[0032] 3. Deep Synergy of Multiple Processes for Superior Treatment Efficiency: Under optimized fluid dynamics conditions, ozone catalytic oxidation and coagulation processes achieve true temporal and spatial synchronization within the reaction zone. The highly oxidizing hydroxyl radicals (·OH) generated by catalysis can instantly attack the flocs and the organic matter encapsulated within them, achieving "deep oxidation." Simultaneously, the coagulation process provides a carrier for the adsorption and co-precipitation of oxidation intermediates. The two processes mutually promote each other, producing a synergistic effect of "1+1>2," resulting in significantly higher removal efficiency and mineralization degree for high-salt and recalcitrant organic matter compared to traditional tandem processes.

[0033] 4. Economical operating costs and outstanding overall benefits: The integrated structure reduces the number of power equipment and lowers system energy consumption. The highly efficient synergistic effect improves ozone utilization and reaction rate, saving 10%-20% of ozone dosage when treating the same water quality. Furthermore, organic matter is more thoroughly oxidized rather than merely transferred to sludge, resulting in reduced chemical sludge production and more stable properties, indirectly reducing the difficulty and cost of subsequent sludge treatment and disposal.

[0034] 5. Flexible operation and wide range of applications: The device can easily adjust the stirring intensity via a variable frequency motor, and can flexibly select the catalyst type and adjust the coagulant addition strategy according to the specific wastewater quality (such as salinity and organic matter composition), making it highly adaptable. This technology is particularly suitable for high-salt and difficult-to-biodegrade organic wastewater, and has broad application prospects in energy, chemical, pharmaceutical, printing and dyeing, and seawater comprehensive utilization industries.

[0035] In summary, this invention, through its core design of an integrated reaction and sedimentation zone structure and hollow screen impellers, achieves not only compactness and long-term stability in hardware, but also deep synergy and a leap in efficiency in process technology. This device not only has a simplified process and small footprint, but also fundamentally solves the core problem of catalyst contamination and deactivation, ensuring long-term stable operation and low maintenance costs. Its superior fluid dynamics enhance mass transfer and reaction processes, exhibiting excellent removal efficiency for high-salt, recalcitrant organic matter, providing a compact, efficient, and economically reliable innovative solution for related industrial wastewater treatment. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention.

[0037] In the diagram: 1-Drive motor, 2-Stirring shaft, 3-Iron blade, 4-Connecting component, 5-Reaction zone, 6-Screen, 7-Catalyst, 8-Coagulant dosing pipe, 9-Water inlet, 10-Ozone inlet, 11-Microporous aerator head, 12-Vertical baffle No. 1, 13-Vertical baffle No. 2, 14-Sedimentation zone, 15-Shell, 16-Water outlet, 17-Inclined plate assembly, 18-Perforated support plate, 19-Conical sludge hopper, 20-Sedimentation sludge discharge pipe. Detailed Implementation

[0038] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings and examples.

[0039] This invention provides a device and method that efficiently couples ozone catalytic oxidation with coagulation-induced ozonation and integrates it with inclined plate sedimentation within a single housing, effectively preventing catalyst contamination. It is particularly suitable for treating high-salinity, recalcitrant organic industrial wastewater.

[0040] like Figure 1 As shown, the ozone catalytic oxidation coupled with coagulation high-salt wastewater organic matter treatment device provided in this embodiment has a rectangular shell made of fiberglass, with a total effective volume of 2.0 m³. 3 The shell is divided by two partitions, No. 1 vertical partition 12 and No. 2 vertical partition 13. The left side is the reaction zone 5 and the right side is the sedimentation zone 14. The volume ratio of the two is about 2:1, forming an integrated processing unit.

[0041] A drive motor 1 with a power of 1.5 kW and frequency conversion control is installed at the top center of the reaction zone 5. The drive motor 1 is connected to and drives a stirring shaft 2 that extends vertically into the reaction zone. The stirring shaft is made of 316L stainless steel. A blade 3 is fixed to the stirring shaft 2 via an octagonal cubic connecting member 4. The blade 3 is connected to the stirring shaft 2 via the connecting member 4. The blade 3 is constructed as a hollow cubic structure enclosed by a screen 6, with each blade measuring 5 cm × 10 cm × 4 cm (length × height × thickness). The screen 6 is made of 304 stainless steel with a pore size of 0.5 mm. The blade is filled with spherical MnO2 catalyst 7 with a particle size of 3-5 mm, with a filling rate of 40%.

[0042] DN is provided on one side of the bottom of reaction zone 5 50 Inlet 9. A coagulant dosing pipe 8 is connected to inlet 9 for adding polyaluminum chloride (PAC). An ozone inlet 10 is located at the bottom of reaction zone 5, connected to an external ozone generator. Ozone bubbles are released into the tank through evenly distributed microporous titanium aeration heads 11, with bubble diameters controlled at 1-3 mm. The top of reaction zone 5 is designed as an overflow, allowing water to flow over vertical baffles 12 and 23 into sedimentation zone 14. Sedimentation zone 14 contains an inclined plate assembly 17 with a 60° inclination angle, 8 cm spacing, and an effective settling height of 80 cm. The inclined plates are fixed by perforated support plates 18. An outlet 16 is located at the top of sedimentation zone 14, and a sedimentation sludge discharge pipe 20 is located at the bottom of a conical sludge hopper 19. In specific embodiment 1, high-salinity organic wastewater discharged from a chemical industrial park was treated, with a TDS of 350,000 mg / L and Cl... -The concentration of COD was 27,779 mg / L, with an initial COD of 1,031.4 mg / L. The system was operated under the following optimized parameters: PAC dosage 300 mg / L, ozone dosage 400 mL / min, stirring speed 100 r / min, and hydraulic retention time in the reaction zone 60 min. After the system stabilized, the effluent COD remained below 16 mg / L, with a removal rate exceeding 98%.

[0043] In specific embodiment 2, to further verify the adaptability of this device, high-salinity wastewater from another source was treated, with the following water quality: TDS: 340,000 mg / L, Cl... - Initial COD: 26,677 mg / L, 1,107.9 mg / L. The operating parameters were adjusted to: PAC dosage 200 mg / L, ozone dosage 300 mL / min, stirring speed 60 r / min, and hydraulic retention time in the reaction zone 60 min. Under these conditions, the effluent COD stabilized below 77 mg / L, with a removal rate exceeding 93%.

Claims

1. A device for treating organic matter in high-salinity wastewater using ozone catalytic oxidation coupled with coagulation, characterized in that, The system includes a shell (15) with a common wall, which is divided into a reaction zone (5) and a sedimentation zone (14) by a partition. The reaction zone (5) is equipped with a stirring device at its center. The impeller (3) of the stirring device is a hollow cubic structure surrounded by a screen (6) and is filled with a solid catalyst (7). A coagulant dosing pipe (8) is connected to the water inlet (9) of the reaction zone (5), and an ozone inlet (10) is connected to a microporous aeration head (11) at the bottom of the reaction zone (5). The water treated in the reaction zone (5) overflows into the sedimentation zone (14) from its top channel. The sedimentation zone (14) is equipped with an inclined plate group (17), with a water outlet (16) at the top and a conical sludge hopper (19) and a sedimentation sludge discharge pipe (20) at the bottom. The screen (6) has a pore size of 0.1-1.0 mm, the solid catalyst (7) is a metal oxide or a supported catalyst, and its filling volume ratio in the impeller (3) is 30%-50%. The stirring shaft (2) of the stirring device is connected to the impeller (3) through an octagonal cube connecting member (4). The driving motor (1) of the stirring device is a variable frequency motor, and its driving speed range for the stirring device is 50-300 r / min.

2. The ozone catalytic oxidation coupled with coagulation high-salinity wastewater organic matter treatment device according to claim 1, characterized in that, Inside the shell (15), in the direction from the reaction zone (5) to the sedimentation zone (14), there are parallel vertical partitions No. 1 (12) and No. 2 (13) arranged in sequence with spacing. The top of the No. 1 vertical partition (12) is suspended and the bottom of the No. 2 vertical partition (13) is suspended, forming a channel connecting the reaction zone (5) and the sedimentation zone (14).

3. The ozone catalytic oxidation coupled with coagulation high-salinity wastewater organic matter treatment device according to claim 1, characterized in that, The inclined plate group (17) has an inclination angle of 45°-60°, a plate spacing of 5-10 cm, an effective settlement height of 50-100 cm, and is fixed by a horizontal perforated support plate (18).

4. The ozone catalytic oxidation coupled with coagulation high-salinity wastewater organic matter treatment device according to claim 1, characterized in that, The screen (6) is made of a catalytically active material or has a nano-catalytic coating loaded on its surface.

5. The ozone catalytic oxidation coupled with coagulation high-salinity wastewater organic matter treatment device according to claim 1, characterized in that, The outer surface of the screen (6) is coated with a superhydrophobic nano-coating.

6. A method for treating organic matter in high-salinity wastewater using ozone catalytic oxidation coupled with coagulation, implemented using the ozone catalytic oxidation coupled with coagulation high-salinity wastewater organic matter treatment device according to any one of claims 1 to 4, characterized in that, The steps are as follows: Coagulant is added through the coagulant dosing pipe (8), and after being fully mixed with the high-salt wastewater, it is introduced into the reaction zone (5) through the inlet (9). Ozone is introduced through the ozone inlet (10), and aeration is carried out using the microporous aeration head (11). Start the stirring device to fully mix and contact the high-salt wastewater, ozone, coagulant and solid catalyst (7), promote the synergistic reaction of ozone catalytic oxidation and coagulation, generate active oxygen components to degrade organic matter and form flocs, and screen (6) prevents flocs from adhering to the surface of solid catalyst (7). The reacted water flows into the sedimentation zone (14) from the top channel of the reaction zone (5); In the sedimentation zone (14), the water flow carries the flocs upward and achieves solid-liquid separation under the action of the inclined plate group (17). The supernatant is discharged from the outlet (16), and the sludge accumulates at the conical sludge hopper (19) under the action of gravity, and is then discharged from the sedimentation sludge discharge pipe (20) at regular intervals.

7. The method for treating organic matter in high-salinity wastewater by ozone catalytic oxidation coupled with coagulation according to claim 6, characterized in that, The TDS content of the high-salt wastewater is greater than 10,000 mg / L.

8. The method for treating organic matter in high-salinity wastewater by ozone catalytic oxidation coupled with coagulation according to claim 6, characterized in that, The ozone dosage in the reaction zone (5) is 10-100 mg / L, the hydraulic residence time is 10-60 min, and the motor speed of the stirring device is 100-200 r / min; the hydraulic residence time in the sedimentation zone (14) is 5-30 min.

9. The method for treating organic matter in high-salinity wastewater by ozone catalytic oxidation coupled with coagulation according to claim 6, 7, or 8, characterized in that, When the COD of the influent to the reaction zone (5) is 500-5000 mg / L, the COD of the effluent drops to 50-200 mg / L, and the organic matter removal rate is over 90%.

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