Method and complete set of device for materializing high-salinity wastewater

Abstract

The present application belongs to the technical field of wastewater treatment, and particularly relates to a method and a complete device for materializing high-salinity wastewater. The complete device for materializing high-salinity wastewater comprises a reactor, an aeration pipe for supplying gas to the reactor, a first layer of sieve column support plates, and a first liquid level positioning plate. The first layer of sieve column support plates is provided with first vertical porous sieve columns. One end of the first layer of sieve column support plates is connected to the inner wall of the reactor, and the other end is connected to the first liquid level positioning plate. The first liquid level positioning plate, the first layer of sieve column support plates and the inner wall of the reactor enclose a first liquid accumulation area for promoting gas-liquid contact between gas and high-salinity wastewater. The complete device for materializing high-salinity wastewater further comprises a high-salinity wastewater circulation pipe. The complete device for materializing high-salinity wastewater can realize the treatment of high-salinity wastewater through gas-liquid separation, so that the treated high-salinity wastewater can be applied in materialization.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to a method and complete set of equipment for the materialization of high-salinity wastewater. Background Technology

[0002] High-salinity wastewater specifically refers to the membrane concentrate produced after treatment using a dual-membrane process (ultrafiltration + reverse osmosis), i.e., the high-salinity concentrated wastewater before evaporation and crystallization. This type of wastewater has a complex composition, containing large amounts of dissolved inorganic salt ions, organic matter, and volatile pollutants. Dissolved inorganic salt ions account for over 90% of the total dissolved solids (TDS), and are highly enriched through membrane retention. Common ions include sodium (Na₂O₃). + K + Ca 2+ Mg 2+ Cl - SO4 2- HCO3 - CO3 2- If the raw water is industrial wastewater from coal chemical, printing and dyeing, pharmaceutical, steel, or smelting industries, it will also be enriched with Fe. 2+ Fe 3+ Cu 2+ Zn 2+ Cr 3+ Cr 6+ It contains heavy metal ions, etc. Its core water quality characteristics are high salt, high organic matter, high ammonia nitrogen, and high hardness. Specifically, the TDS concentration is about 5,000~200,000 mg / L, and the COD concentration is about 200~10,000 mg / L. It has a significant tendency to scale, strong corrosiveness, and high treatment difficulty.

[0003] The generation of high-salinity wastewater is enormous, and direct discharge or improper disposal will cause serious harm to the ecological environment. Therefore, high-salinity wastewater must be properly treated; and the treatment and materialization of high-salinity wastewater (converting high-salinity wastewater into usable materials to realize the resource utilization of high-salinity wastewater) is the fundamental prerequisite for its synergistic utilization with solid waste.

[0004] However, taking the current salt separation resource utilization technology as an example, the water volume treated by the salt separation unit accounts for only 1 / 10 of the total water volume of high-salt wastewater, but the treatment investment accounts for 50% to 75% of the total investment. There is a serious problem of input and output imbalance, and the treatment is ineffective.

[0005] The current "classification, quality differentiation, high quality, and high value" technical approach cannot achieve a balanced and unified approach in terms of technology, economy, scale, and disposal of residual products. Existing technical systems are unable to treat this type of high-salinity wastewater to material standards while ensuring reliability, economy, and safety, and innovative technological breakthroughs are urgently needed.

[0006] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0007] The purpose of this invention is to provide a method and complete set of equipment for the materialization of high-salinity wastewater, so as to help solve or improve the problems of poor treatment effect or high cost of medium and high salinity wastewater.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a complete set of equipment for the materialization of high-salinity wastewater, comprising: a reactor, wherein a high-salinity wastewater inlet is provided on the reactor, and the treatment of high-salinity wastewater is carried out in the reactor; an aeration pipe, one end of which is connected to an air supply device and the other end is disposed inside the reactor for supplying air to the reactor; a first layer of screen column support plate, wherein the first layer of screen column support plate is disposed above the air outlet of the aeration pipe, and a first vertical porous screen column is disposed on the first layer of screen column support plate; the first vertical porous screen column is hollow columnar, and the bottom plate of the first vertical porous screen column is connected to the first layer of screen column support plate. The first vertical porous screen column is spaced apart, and a guide hole is provided on the bottom plate of the first vertical porous screen column. An air inlet corresponding to the guide hole is provided on the first layer screen column support plate. The top plate of the first vertical porous screen column is sealed, and horizontal screen holes are provided on the side wall. One end of the first layer screen column support plate is connected to the inner wall of the reactor, and the other end is connected to the first liquid level positioning plate. The first liquid level positioning plate, the first layer screen column support plate, and the inner wall of the reactor enclose a first liquid accumulation area. A high-salt wastewater circulation pipe is provided, with the inlet of the high-salt wastewater circulation pipe located below the first layer screen column support plate and the outlet of the high-salt wastewater circulation pipe located above the first layer screen column support plate.

[0009] Preferably, a mushroom-shaped cutting head is also provided on the side wall of the first vertical porous screen column; the mushroom-shaped cutting head is disposed between the horizontal screen hole and the guide hole in the axial direction of the first vertical porous screen column; multiple mushroom-shaped cutting heads and / or horizontal screen holes are provided; multiple mushroom-shaped cutting heads and / or horizontal screen holes are distributed circumferentially along the first vertical porous screen column.

[0010] Preferably, a second layer of screen column support plate is provided above the first layer of screen column support plate. The second layer of screen column support plate is provided with a second vertical porous screen column. One end of the second layer of screen column support plate is connected to the inner wall of the reactor, and the other end is connected to the second liquid level positioning plate. The structure of the second layer of screen column support plate is the same as that of the first layer of screen column support plate, and the structure of the second vertical porous screen column is the same as that of the first vertical porous screen column. The second liquid level positioning plate, the second layer of screen column support plate, and the inner wall of the reactor enclose a second liquid accumulation area.

[0011] Preferably, an anti-vortex plate is provided above the inlet of the high-salt wastewater circulation pipe, and the anti-vortex plate is connected to the high-salt wastewater circulation pipe; the aeration pipe passes through the bubble-breaking plate, the bubble-breaking plate is located above the anti-vortex plate, and the bubble-breaking plate is provided with vent holes; a variable speed guide plate is also provided between the bubble-breaking plate and the first layer of screen column support plate, and the aeration pipe passes through the variable speed guide plate.

[0012] Preferably, the ventilation holes are provided in multiple sets, and the diameter of the ventilation holes gradually increases from the inside to the outside in the radial direction of the bubble-breaking plate.

[0013] Preferably, the reactor is further provided with a cleaning pipe, which is disposed between the bubble-breaking plate and the variable speed guide plate.

[0014] Preferably, a heating device is further provided between the aeration pipe and the air supply device; the reactor is also provided with at least one of bottom instrument, lower instrument, middle instrument and top instrument; the top instrument is a pressure gauge and / or a temperature gauge; the middle instrument is a pressure sensor and / or a temperature sensor; the lower instrument is at least one of a pressure sensor, a temperature sensor and an online pH meter; the bottom instrument is at least one of a level gauge, a density meter and a conductivity meter; the inner wall of the reactor is provided with a ceramic coating; the surface of the ceramic coating has a micron-level uneven texture and a roughness Ra≤0.25μm.

[0015] Preferably, the high-salt wastewater material processing equipment further includes an aminophenol recovery unit and / or a VOC quenching unit; the air inlet of the aminophenol recovery unit is connected to the air outlet of the reactor, and the air outlet of the aminophenol recovery unit is connected to the air inlet of the VOC quenching unit.

[0016] This invention also provides a method for materializing high-salinity wastewater, which adopts the following technical solution: A method for treating high-salt wastewater by means of a complete set of high-salt wastewater materialization equipment as described above; comprising the following steps: (1) introducing high-salt wastewater into the reactor; (2) circulating the high-salt wastewater in the reactor through a high-salt wastewater circulation pipe and introducing gas into the reactor; (3) separating gas and liquid to obtain treated high-salt wastewater.

[0017] Preferably, the temperature inside the reactor is 45-60℃, the pH is 8.5-11.5, and the gas-liquid ratio is (500-4000):1.

[0018] Beneficial effects: The high-salinity wastewater materialization apparatus of the present invention can treat high-salinity wastewater through gas-liquid separation, enabling the treated high-salinity wastewater to be directly applied (for example, as a raw material for solid-liquid synergistic reaction to prepare paste-like rock materials). The high-salinity wastewater materialization apparatus of the present invention is suitable for treating various membrane concentrates such as high-salinity mine water, high-salinity coal chemical water, accumulated waste liquid from evaporation ponds, and desulfurization waste liquid. The treatment process produces no secondary pollution, and the treated exhaust gas meets emission standards.

[0019] The high-salt wastewater materialization method of the present invention has low energy consumption and low treatment cost; the product is harmless material water, and the pollutants separated from it are recycled and quenched to meet the harmlessness requirements. The entire system achieves no secondary pollution generation, the destination of each product is clear, and the relevant indicators meet the environmental protection requirements. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein: Figure 1 This is a schematic diagram of the internal structure of a complete set of equipment for the materialization of high-salt wastewater according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a first vertical porous sieve column provided in one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first layer sieve column support plate provided in one embodiment of the present invention; Figure 4 This is a top view of the first layer of screen column support plate and the first liquid level positioning plate after assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a bubble-breaking plate provided in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a variable speed guide plate provided in one embodiment of the present invention; wherein, (a) is a three-dimensional structural schematic diagram and (b) is a top view; Figure 7 This is a schematic diagram of the overall structure of a complete set of equipment for the materialization of high-salt wastewater according to an embodiment of the present invention.

[0021] Figure reference numerals: 1-High-salinity wastewater inlet; 2-High-salinity wastewater circulation pipe inlet; 3-Aeration pipe; 4-Heating device; 5-Anti-vortex plate; 6-Bubble-breaking plate; 61-Ventilation hole; 7-Variable speed guide plate; 8-Cleaning pipe; 9-First vertical porous screen column; 91-Mushroom-shaped cutting head; 92-Horizontal screen hole; 93-Support rod; 10A-First liquid level positioning plate; 10B-Second liquid level positioning plate; 11-First layer screen column support plate; 111-Air inlet; 12-Second layer screen column support plate; 13-Combined packing layer; 14-Tail gas emission pipe; 15-High-salinity wastewater circulation pipe outlet; 16-Top instrument; 17-Middle instrument; 18-Lower instrument; 19-Bottom instrument; a1-Feed pump; a2-Alkali addition pump; a3-Pipeline mixer; a4-Reactor; a5-High-salt wastewater circulation pump; a6-Air supply fan; a7-External pump; a8-Swirl separator; a9-Acid addition pump; a10-Ammonia absorption tower; a11-Ammonia absorption circulation pump; a12-Primary induced draft fan; a13-RTO unit; a14-Catalytic oxidation adsorption unit; a15-Secondary induced draft fan; a16-Exhaust stack. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0024] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components, an indirect connection, or an interaction between two components.

[0027] The present invention will now be described in detail with reference to embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0028] This invention addresses the problems of poor treatment effect or high cost of high-salinity wastewater in existing technologies by providing a complete set of materials for treating high-salinity wastewater.

[0029] like Figure 1-4 As shown, the high-salinity wastewater material processing device of this invention includes: a reactor a4, on which a high-salinity wastewater inlet 1 is provided, and the treatment of high-salinity wastewater is carried out in the reactor a4; an aeration pipe 3, one end of which is connected to an air supply device (which may be an air supply fan a6) and the other end is located inside the reactor a4 for supplying air to the reactor a4; a first-layer screen column support plate 11, which is located above the air outlet of the aeration pipe 3 (the first-layer screen column support plate 11 is provided with holes that allow the aeration pipe 3 to pass through), and a first vertical porous screen column 9 is provided on the first-layer screen column support plate 11; the first vertical porous screen column 9 is hollow columnar, and the bottom plate of the first vertical porous screen column 9 is spaced apart from the first-layer screen column support plate 11 (that is, there is a gap between the bottom plate of the first vertical porous screen column 9 and the first-layer screen column support plate 11; preferably, the first vertical porous screen column 9 is open to the air outlet of the aeration pipe 3; the first vertical porous screen column 9 is hollow columnar, and the bottom plate of the first vertical porous screen column 9 is spaced apart from the first-layer screen column support plate 11). Multiple support rods 93 are spaced apart and connected to the first layer screen column support plate 11; for example, one end of the support rod 93 is connected to the first layer screen column support plate 11, and the other end is connected to the outer wall of the first vertical porous screen column 9. The bottom plate of the first vertical porous screen column 9 is provided with a guide hole, and the first layer screen column support plate 11 is provided with an air inlet 111 corresponding to the guide hole. The top plate of the first vertical porous screen column 9 is sealed, and the side wall is provided with a horizontal screen hole 92. One end of the first layer screen column support plate 11 is connected to the inner wall of the reactor a4, and the other end is connected to the first liquid level positioning plate 10A. The first liquid level positioning plate 10A, the first layer screen column support plate 11, and the inner wall of the reactor a4 enclose a first liquid accumulation area. A high-salt wastewater circulation pipe is provided, with the inlet 2 of the high-salt wastewater circulation pipe located below the first layer screen column support plate 11 and the outlet 15 of the high-salt wastewater circulation pipe located above the first layer screen column support plate 11.

[0030] The high-salinity wastewater materialization complete set of equipment of the present invention is applicable to the treatment of membrane concentrate (i.e., high-salinity concentrated wastewater before evaporation and crystallization) produced after treatment by dual membrane method (ultrafiltration + reverse osmosis). The high-salinity wastewater can originate from mine high-salinity water, coal chemical high-salinity water, evaporation desalination mother liquor, desulfurization waste liquid, etc. In the high-salinity wastewater materialization complete set of equipment of the present invention, reactor a4 is used to treat the high-salinity wastewater. The aeration pipe 3 allows for the selective removal of volatile components, toxic and harmful factors, and factors that negatively affect the solid-liquid synergistic reaction in the high-salinity wastewater through gas-liquid separation by introducing gas (e.g., air or carbon dioxide) into reactor a4. Specifically, these factors include volatile organic compounds (e.g., low-boiling-point hydrocarbons such as aliphatic alkanes or alkenes, aromatic hydrocarbons, oxygen-containing volatile organic compounds, halogenated volatile organic compounds, etc.; specifically, they can be methane, ethane, propane, ethylene, propylene, benzene, toluene, xylene (BTX), styrene, naphthalene (low-boiling-point components), methanol, ethanol, acetone, acetic acid, ethyl acetate, formaldehyde, acetaldehyde, chloroform, carbon tetrachloride, dichloromethane, vinyl chloride, Freon (low-boiling-point halogenated hydrocarbons), etc.) and volatile inorganic compounds (e.g., acidic volatile organic compounds). Inorganic components or alkaline volatile inorganic components; specifically, these can include hydrogen chloride, hydrogen fluoride, hydrogen sulfide, sulfur dioxide, nitrogen oxides, ammonia, methylamine / dimethylamine (low-boiling-point amines, inorganic-organic transition), ammonium carbonate formed by the combination of ammonia and carbon dioxide, etc., as well as semi-volatile organic compounds, polar organic compounds, ionic organic compounds, etc. Among them, volatile organic compounds (VOCs) include benzene compounds, halogenated hydrocarbons, alcohols, ketones, etc. These substances are toxic and irritating, and some are carcinogenic; direct emission will harm human health and the environment. This technology can be used to transfer these VOCs from the aqueous phase to the gas phase through gas-liquid contact of air / inert gas CO2. Subsequent condensation recovery, adsorption, quenching and other units can be added to achieve emission standards. In addition, volatile inorganic pollutants include ammonia nitrogen, volatile acids, etc. Ammonia nitrogen in high-salinity wastewater is mostly in the form of NH4+. 4+ It exists in a form that transforms into NH3 (which is volatile) under alkaline conditions. Air stripping can remove it, avoiding secondary pollution caused by ammonia nitrogen volatilization during the subsequent solid-liquid synergistic process. High-salinity wastewater treated by the high-salinity wastewater materialization apparatus of this invention can be used as a raw material for solid-liquid synergistic reaction to prepare paste-like rock materials (for example, the high-salinity wastewater treated by the high-salinity wastewater materialization apparatus of this invention can be utilized for resource recovery according to the method in patent document CN202410144041.1).

[0031] The above-described configuration of the high-salinity wastewater material processing device of the present invention allows the following: when the gas introduced through the aeration pipe 3 moves upward, it can enter the interior of the first vertical porous screen column 9 through the air inlet on the first layer screen column support plate 11 and the guide hole on the bottom plate of the first vertical porous screen column 9, moving upward; the high-salinity wastewater circulation pipe can realize the circulation of high-salinity wastewater in the reactor a4, causing the high-salinity wastewater to move downward, thereby causing some of the high-salinity wastewater to accumulate in the first liquid accumulation area, and then enter the interior of the first vertical porous screen column 9 through the air inlet 111 and the guide hole, thus facilitating the flow of gas into the first vertical porous screen column 9. The system achieves intense turbulent contact between the gas and high-salt wastewater (gas-liquid reverse circulation), which drives the high-salt wastewater in the first liquid accumulation area to form a "gas-liquid co-flow" turbulent state (Reynolds number Re≥1200) along the direction of the horizontal sieve holes 92. This achieves "high-speed mixing of gas and liquid" to improve mass transfer efficiency and quickly separate volatile components. (In addition, when there is less high-salt wastewater accumulated in the first liquid accumulation area and the gas has already entered the first liquid accumulation area, the gas can also contact the high-salt wastewater in the first liquid accumulation area and outside the first vertical porous sieve column to promote the volatilization of volatile components in the high-salt wastewater.)

[0032] Preferably, the aperture of the horizontal sieve 92 is ≤100μm.

[0033] More preferably, at least a portion of the horizontal sieve holes 92 are located within the first liquid accumulation area; and / or, the horizontal sieve holes 92 or the first vertical porous sieve column 9 are inclined (e.g., the inclination can be 1°-2°; inclination refers to the inclination relative to the vertical direction of the first layer sieve column support plate 11).

[0034] Preferably, the number of first vertical porous screen columns 9 provided on the first layer screen column support plate 11 can be 4-6.

[0035] In a preferred embodiment of the high-salinity wastewater materialization complete set of equipment of the present invention, a mushroom-shaped cutting head 91 (with the same structure as the mushroom head in the OHR cyclone aerator) is also provided on the side wall of the first vertical porous screen column 9; the mushroom-shaped cutting head 91 is disposed between the horizontal screen hole 92 and the guide hole in the axial direction of the first vertical porous screen column 9; multiple mushroom-shaped cutting heads 91 and / or horizontal screen holes 92 are provided; multiple mushroom-shaped cutting heads 91 and / or horizontal screen holes 92 are distributed along the circumference of the first vertical porous screen column 9. Among them, the gas can be broken into bubbles with a particle size of 500-1000μm by passing through the mushroom-shaped cutting head 91, and further broken into ultra-micro bubbles with a particle size of 100nm~10μm when passing through the horizontal screen hole 92, which has more obvious advantages: 1) the specific surface area is as high as 1000m². 2 / m 31) The bubble size is more than 1,000 times that of ordinary bubbles (1 mm), greatly increasing the gas-liquid contact area; 2) The bubble surface carries a negative charge (ζ potential is -20~-50 mV), and the bubbles repel each other and are not easy to aggregate; the internal pressure of the bubble increases as the volume decreases, reaching up to several megapascals, accelerating the migration of volatile components to the gas phase; 3) The bubble shrinks continuously during the rising process and eventually dissolves completely in the liquid, with a gas utilization rate close to 100%. Hydroxyl radicals (•OH) are generated during the dissolution process, with an oxidation-reduction potential of 2.8 V, which can simultaneously degrade some organic matter. The mass transfer coefficient (kLa) is 20-40% higher than that of ordinary bubbles, which can significantly improve the migration efficiency of volatile components. The ammonia nitrogen migration rate is increased from 60-70% in traditional gas stripping to 90-95%, the migration time is shortened by more than 50%, and the VOCs migration rate reaches more than 95%, which is far higher than that of conventional stripping technology (60-70%); 4) A double electric layer is formed on the bubble surface, which also has a certain adsorption effect on hydrophobic VOCs molecules, promoting phase transfer. This method introduces air / inert gas to form a three-phase cross-fusion reaction (salt, water, and gas) in reactor a4, achieving synergistic reaction for the control of multiple pollutants.

[0036] Preferably, those skilled in the art can also set multiple sets (e.g., dozens of sets) of the same structure as the first layer screen column support plate 11, the first vertical porous screen column 9, and the first liquid level positioning plate 10A, according to actual needs. Multiple sets can be connected in series via flanges.

[0037] In a preferred embodiment of the high-salt wastewater materialization complete set of equipment of the present invention, a second layer of screen column support plate 12 is further provided above the first layer of screen column support plate 11. A second vertical porous screen column is provided on the second layer of screen column support plate 12. One end of the second layer of screen column support plate 12 is connected to the inner wall of reactor a4, and the other end is connected to the second liquid level positioning plate 10B. The structure of the second layer of screen column support plate 12 is the same as that of the first layer of screen column support plate 11, and the structure of the second vertical porous screen column is the same as that of the first vertical porous screen column 9. The second liquid level positioning plate 10B, the second layer of screen column support plate 12 and the inner wall of reactor a4 enclose a second liquid accumulation area.

[0038] Preferably, after the liquid in the second liquid accumulation area overflows from the overflow port (at the second liquid level positioning plate 10B), it enters the first liquid accumulation area; after the liquid in the first liquid accumulation area overflows from the overflow port (at the first liquid level positioning plate 10A), it falls under the action of gravity and then enters the inlet 2 of the high-salt wastewater circulation pipe.

[0039] Preferably, the lower end of the second liquid level positioning plate 10B extends into the first liquid accumulation area.

[0040] More preferably, the overflow outlet of the second liquid accumulation area is located at a position corresponding to the overflow outlet of the first liquid accumulation area, so as to help extend the liquid flow path.

[0041] In a preferred embodiment of the high-salinity wastewater materialization complete set of equipment of the present invention, an anti-vortex plate 5 is provided above the inlet of the high-salinity wastewater circulation pipe, and the anti-vortex plate 5 is connected to the high-salinity wastewater circulation pipe (the anti-vortex plate 5 and the inlet 2 of the high-salinity wastewater circulation pipe are spaced apart so that the high-salinity wastewater can enter the high-salinity wastewater circulation pipe); the aeration pipe 3 is provided through the bubble-breaking plate 6, and the bubble-breaking plate 6 is provided above the anti-vortex plate 5, and the bubble-breaking plate 6 is provided with a vent hole 61; a variable speed guide plate 7 is also provided between the bubble-breaking plate 6 and the first layer screen column support plate 11 (the structural diagram of the variable speed guide plate 7 is shown in the figure below). Figure 6 As shown; Figure 6 (a) and (b) are not views obtained at the same scale but from different perspectives; the variable speed guide plate 7 is composed of multiple overlapping swirl plates, with adjacent swirl plates spaced apart to allow gas to pass through), and the aeration pipe 3 is installed through the variable speed guide plate 7. Among them, the anti-vortex plate 5 can prevent high-salt wastewater from carrying too much gas into the high-salt wastewater circulation pump a5 installed on the high-salt wastewater circulation pipe, thus avoiding cavitation damage to the pump; the gas transported by the aeration pipe 3 is first transported to the anti-vortex plate 5, and then the flow direction changes to reverse upward (the gas flowing upward can be air or carbon dioxide transported through the aeration pipe 3, or it may be volatile pollutants separated from the high-salt wastewater), and the gas is evenly distributed through the bubble-breaking plate 6. The variable speed guide plate 7 not only helps to increase the gas flow rate from the bubble-breaking plate 6, strengthen the gas-liquid stirring intensity, and reduce the risk of local scaling and blockage in reactor a4, but also facilitates the formation of a large number of microbubbles in the first vertical porous sieve column 9 through swirling acceleration and cutting, thereby increasing the gas-liquid contact area. The turbulent state also helps to break the stagnant film at the gas-liquid interface, reduce mass transfer resistance, and significantly improve component transfer efficiency.

[0042] Preferably, the bubble-breaking plate 6 is positioned approximately 200 mm above the anti-vortex plate 5; and / or, the speed-changing guide plate 7 is positioned 100-300 mm above the bubble-breaking plate 6.

[0043] In a preferred embodiment of the high-salinity wastewater material processing device of the present invention, such as Figure 5 As shown, multiple sets of vent holes 61 are provided. Along the radial direction of the bubble-breaking plate 6, the diameter of the vent holes 61 gradually increases from the inside to the outside. Since the aeration pipe 3 is located at the center of reactor a4, the gas velocity at the center of reactor a4 is greater than the gas velocity near the inner wall of reactor a4 after gas enters reactor a4. The arrangement of the vent holes 61 on the bubble-breaking plate 6 ensures that the diameter of the vent holes 61 corresponding to the gas with higher flow velocity is smaller than the diameter of the vent holes 61 corresponding to the gas with lower flow velocity, thus helping to achieve uniform gas distribution within reactor a4.

[0044] Preferably, the vent holes 61 on the bubble-breaking plate 6 have a diameter of 25-150 mm; the vent holes 61 have a multi-layered annular structure from the inside to the outside, and the vent holes 61 on the same layer (with the same radial dimension of the bubble-breaking plate 6) have the same diameter.

[0045] In a preferred embodiment of the high-salinity wastewater materialization complete set of equipment of the present invention, a cleaning pipe 8 is further provided on the reactor a4, and the cleaning pipe 8 is located between the bubble-breaking plate 6 and the variable speed guide plate 7. The cleaning pipe 8 is mainly used for cleaning the inside of the reactor a4; that is, after each operation, when the system starts self-cleaning, the high-pressure water can be controlled by the valve group to flush the bubble-breaking plate 6. The bubble-breaking plate 6 is prone to scaling and clogging, so it is necessary to set up a self-cleaning function.

[0046] Preferably, the installation tilt angle of the cleaning pipe 8 is 5°-15°; one end of the cleaning pipe 8 is set outside the reactor a4 and the other end is set inside the reactor a4; the end of the cleaning pipe 8 set inside the reactor a4 is provided with a tapered spiral nozzle, the flow orifice diameter of the tapered spiral nozzle is ≥20mm, the fluid forms strong turbulence in the swirling core and enters tangentially laterally, which enhances the cleaning effect.

[0047] In a preferred embodiment of the high-salinity wastewater treatment equipment of the present invention, a heating device 4 is further provided between the aeration pipe 3 and the air supply device. The heating device 4 allows the gas entering the aeration pipe 3 to be heated as needed, thereby facilitating better treatment of high-salinity wastewater through temperature adjustment (e.g., 0-300°C). The heating device 4 can be an externally mounted controllable heater, employing a modular design, and connected to the reactor a4 via a flange.

[0048] Preferably, the heating device 4 has multiple sets of variable frequency heaters built in, which are interlocked with the wastewater operating temperature, air supply, and water supply for control.

[0049] In a preferred embodiment of the high-salinity wastewater treatment material processing device of the present invention, a combined packing layer 13 (gas-liquid separation packing; for example, Pall ring packing, stepped ring packing, wire mesh corrugated packing, multi-faceted hollow sphere packing, and novel vortex cyclone packing) is further provided above reactor a4. The combined packing layer 13 is used to improve the gas-liquid separation effect. The combined packing layer 13 allows for the addition of additional combined packing through packing addition holes as needed and depending on the type of high-salinity wastewater, further improving the gas-liquid separation effect (avoiding the impact of foam and other substances generated during high-salinity wastewater treatment on the gas-liquid separation effect).

[0050] In a preferred embodiment of the high-salinity wastewater treatment equipment of the present invention, reactor a4 is further equipped with at least one of the following: a bottom instrument 19, a lower instrument 18, a middle instrument 17, and a top instrument 16. The top instrument 16 is a pressure gauge and / or a temperature gauge; the middle instrument 17 is a pressure sensor and / or a temperature sensor; the lower instrument 18 is at least one of a pressure sensor, a temperature sensor, and an online pH meter; and the bottom instrument 19 is at least one of a level gauge, a density meter, and a conductivity meter. The arrangement of the bottom instrument 19, lower instrument 18, middle instrument 17, and top instrument 16 allows for the monitoring of the high-salinity wastewater within the reactor as needed, facilitating its discharge once the required salinity is met; or, as needed, allows for the adjustment of parameters at each stage within the reactor to improve the treatment effect of the high-salinity wastewater.

[0051] In a preferred embodiment of the high-salt wastewater materialization complete set of equipment of the present invention, the reactor a4 is further provided with a high-salt wastewater inlet 1, an inspection hole and a tail gas discharge pipe 14.

[0052] In a preferred embodiment of the high-salt wastewater materialization complete set of equipment of the present invention, the inner wall of reactor a4 is provided with a ceramic coating; the surface of the ceramic coating has micron-level uneven texture and roughness Ra≤0.25μm.

[0053] Preferably, the ceramic coating is made of S31603 / TA2 material. The inner wall of the key reactor a4 can be selectively coated with a 50-300μm thick SiC-Al2O3 ceramic-based composite coating. The coating surface undergoes laser microstructuring treatment (forming micron-level textured surfaces with a roughness Ra≤0.25μm). The hardness (HV≥1200) and corrosion resistance (resistance to 5%-30% NaCl solution, pH 2-12) of the composite coating are significantly improved. The entire reactor a4 structure can be connected using multi-level flanges, making modular assembly and installation very simple.

[0054] Preferably, the high-salinity wastewater is pumped into the pipeline mixer a3 by the high-salinity wastewater feed pump a1 and then enters the reactor a4; the pipeline mixer a3 is connected to the alkali tank, so that alkali can be pumped into the pipeline mixer a3 by the alkali addition pump a2 to adjust the pH of the high-salinity wastewater; an external pump a7 is also provided at the outlet of the reactor a4 to facilitate the transportation of the treated high-salinity wastewater to the next process.

[0055] In a preferred embodiment of the high-salinity wastewater material processing device of the present invention, such as Figure 7 As shown, the complete set of equipment for the materialization of high-salt wastewater also includes an aminophenol recovery unit and / or a VOC quenching unit; the air inlet of the aminophenol recovery unit is connected to the air outlet of reactor a4, and the air outlet of the aminophenol recovery unit is connected to the air inlet of the VOC quenching unit.

[0056] Preferably, a hydrocyclone a8 is provided between reactor a4 and the acetaminophen recovery unit; the air inlet of hydrocyclone a8 is connected to the tail gas discharge pipe 14 of reactor a4, the air outlet of hydrocyclone a8 is connected to the air inlet of the acetaminophen recovery unit, and the bottom liquid outlet of hydrocyclone a8 is connected to reactor a4.

[0057] In a preferred embodiment of the high-salinity wastewater material processing complete set of equipment of the present invention, the aminophenol recovery unit includes an aminophenol absorption tower a10 (which absorbs the ammonia-containing waste gas separated from reactor a4 through acid absorption to generate ammonium salts such as ammonium sulfate and ammonium chloride, which can be further used as fertilizer; or, it recovers ammonia water through condensation, and the concentration of ammonia water can be 10%-20%; both can realize the resource utilization of ammonia; ammonia nitrogen is the main component, the designed raw water concentration is ≤10000mg / L, the designed wastewater operating temperature is 45~60℃, and the designed pH is 2.5-7.0; the designed absorbent can be condensate or... The concentration is 98% industrial sulfuric acid (5%~15% after dilution). In special cases, polyphenols can be recovered by solvent extraction. After adsorption by the extractant, polyphenols are recovered by back-extraction (acid / alkali washing). The acid storage tank is connected to the nitrogen adsorption tower through the acid pump a9, so as to realize the recovery of ammonia by spraying acid into the nitrogen adsorption tower. The bottom of the ammonia adsorption tower is also equipped with an ammonia absorption circulation pump a11 to facilitate the full absorption of ammonia. An outlet is provided above the acetaminophen absorption tower a10. The outlet of the acetaminophen absorption tower a10 is connected to the VOC quenching unit through the primary induced draft fan a12.

[0058] In a preferred embodiment of the high-salinity wastewater treatment equipment of the present invention, the VOC quenching unit includes a catalytic oxidation adsorption device a14 and an RTO device a13 (regenerative thermal oxidation). Specifically, the appropriate equipment configuration can be selected according to the inlet concentration, pollutant type, and emission requirements of the VOC quenching unit to quench volatile organic compounds and generate carbon dioxide and water, achieving the goal of harmlessness. The selected modules are divided into high-concentration and low-concentration treatment modules, with the equipment configuration selected based on the inlet concentration, pollutant type, and emission requirements. Module 1: Catalytic oxidation adsorption system device, suitable for low concentrations (≤1000 mg / m³). 3 Low air volume (≤10,000 m³) 3 / h); Module 2: RTO unit (regenerative thermal oxidation), suitable for medium to high concentrations (1000-8000 mg / m³). 3 Medium to high air volume (10,000-50,000 m³) 3 / h). The RTO unit includes a waste gas collection unit, a pretreatment unit, an airflow regulation unit, and a core reaction unit. The core reaction unit uses a three-chamber or rotary RTO with a heat recovery efficiency of 85%-95% and a removal rate of over 99%. The entire system generates no secondary pollution, the destinations of each product are clearly defined, and relevant indicators meet environmental protection requirements.

[0059] Preferably, the outlet of the catalytic oxidation adsorption device a14 and / or the RTO device a13 is connected to the exhaust stack a16 via a secondary induced draft fan a15, so as to discharge the generated carbon dioxide and / or water.

[0060] The present invention also proposes a method for materializing high-salt wastewater, which uses the above-mentioned complete set of high-salt wastewater materialization equipment to treat high-salt wastewater; the method for materializing high-salt wastewater in the embodiment of the present invention includes the following steps: (1) introducing high-salt wastewater into reactor a4; (2) circulating the high-salt wastewater in reactor a4 through the high-salt wastewater circulation pipe in reactor a4, and introducing gas into the reactor; (3) separating gas and liquid to obtain treated high-salt wastewater.

[0061] The high-salinity wastewater materialization method of this invention is achieved using a complete set of high-salinity wastewater materialization equipment, enabling the construction of a "microbubble + high-salinity wastewater + functional materials" technical system. By introducing air / inert gas (CO2), it is converted into microbubbles to provide reaction conditions, significantly improving gas-liquid separation efficiency. Within the reactor, a three-phase cross-fusion reaction of "solid, liquid, and gas" (salt, water, and gas) can be formed, achieving synergistic control of multiple pollutants. Employing low-energy-consumption treatment technology, compared to existing high-energy-consumption technologies such as evaporation crystallization and electrocatalytic oxidation, the reaction temperature is controlled below 60°C. The core energy source uses electricity instead of high-energy-consumption gas, belonging to low-temperature treatment technology, reducing energy consumption and treatment costs by more than 70%. The high-salinity wastewater materialization method of this invention achieves the goal of high-salinity wastewater materialization, with the product being harmless material water. The separated pollutants, after recycling and quenching treatment, can also meet harmlessness requirements. The destinations of each product are clear, with no secondary pollution generated, and relevant indicators meet environmental protection requirements.

[0062] Preferably, the gas is air, carbon dioxide, or other inert gas.

[0063] Preferably, in step (1), the liquid level of the high-salt wastewater is below the first layer of screen column support plate 11.

[0064] In a preferred embodiment of the method for materializing high-salinity wastewater of the present invention, the temperature inside reactor a4 is 45-60°C (e.g., 45°C, 50°C, 55°C or 60°C), the pH is 8.5-11.5 (e.g., 8.5, 9, 9.5, 10, 10.5, 11 or 11.5), and the gas-liquid ratio is (500-4000):1 (e.g., 500:1, 1000:1, 1500:1, 2000:1, 2500:1, 3000:1, 3500:1 or 4000:1).

[0065] Preferably, when the components to be removed from the high-salt wastewater are mainly volatile inorganic components, the gas-liquid ratio is designed to be 3000:1; when the components to be removed from the high-salt wastewater are mainly volatile organic components, the gas-liquid ratio is designed to be 800:1; under normal operating conditions, the gas-liquid ratio is designed to be 2000:1.

[0066] Preferably, the wastewater residence time in reactor a4 is not less than 30 minutes, and the number of cycles is not less than 15 times / hour.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A complete set of equipment for the materialization of high-salinity wastewater, characterized in that, include: A reactor, which is equipped with a high-salt wastewater inlet, is used for the treatment of high-salt wastewater. An aeration pipe, one end of which is connected to an air supply device and the other end of which is located inside the reactor, is used to supply air to the reactor; The first layer of screen column support plate is located above the air outlet of the aeration pipe. A first vertical porous screen column is mounted on the first layer of screen column support plate. The first vertical porous screen column is hollow and cylindrical. The bottom plate of the first vertical porous screen column is spaced apart from the first layer of screen column support plate, and a guide hole is provided on the bottom plate of the first vertical porous screen column. An air inlet corresponding to the guide hole is provided on the first layer of screen column support plate. The top plate of the first vertical porous screen column is sealed, and horizontal screen holes are provided on its sidewalls. One end of the first layer of screen column support plate is connected to the inner wall of the reactor, and the other end is connected to a first liquid level positioning plate. The first liquid level positioning plate, the first layer of screen column support plate, and the inner wall of the reactor enclose a first liquid accumulation area. A high-salt wastewater circulation pipe, wherein the inlet of the high-salt wastewater circulation pipe is located below the first layer of screen column support plate, and the outlet of the high-salt wastewater circulation pipe is located above the first layer of screen column support plate. The first vertical porous screen column is also provided with a mushroom-shaped cutting head on its side wall; in the axial direction of the first vertical porous screen column, the mushroom-shaped cutting head is disposed between the horizontal screen hole and the guide hole; The mushroom-shaped cutting head and / or horizontal sieve holes are provided in multiple ways; the multiple mushroom-shaped cutting heads and / or horizontal sieve holes are distributed circumferentially along the first vertical porous sieve column.

2. The complete set of equipment for the materialization of high-salinity wastewater as described in claim 1, characterized in that, A second layer of screen column support plate is provided above the first layer of screen column support plate. A second vertical porous screen column is provided on the second layer of screen column support plate. One end of the second layer of screen column support plate is connected to the inner wall of the reactor, and the other end is connected to the second liquid level positioning plate. The structure of the second layer of sieve column support plate is the same as that of the first layer of sieve column support plate, and the structure of the second vertical porous sieve column is the same as that of the first vertical porous sieve column; the second liquid level positioning plate, the second layer of sieve column support plate and the inner wall of the reactor enclose and form the second liquid accumulation area.

3. The complete set of equipment for material processing of high-salinity wastewater as described in claim 1, characterized in that, An anti-vortex plate is installed above the inlet of the high-salt wastewater circulation pipe, and the anti-vortex plate is connected to the high-salt wastewater circulation pipe. The aeration pipe is installed through the bubble-breaking plate, the bubble-breaking plate is installed above the anti-vortex plate, and the bubble-breaking plate is provided with ventilation holes. A variable speed guide plate is also provided between the bubble-breaking plate and the first layer of screen column support plate, and the aeration pipe is provided through the variable speed guide plate.

4. The complete set of equipment for the materialization of high-salinity wastewater as described in claim 3, characterized in that, The ventilation holes are provided in multiple sets, and the diameter of the ventilation holes gradually increases from the inside to the outside in the radial direction of the bubble-breaking plate.

5. The complete set of equipment for the materialization of high-salinity wastewater as described in claim 3, characterized in that, The reactor is also equipped with a cleaning pipe, which is located between the bubble-breaking plate and the variable speed guide plate.

6. The complete set of equipment for material processing of high-salinity wastewater as described in claim 1, characterized in that, A heating device is also provided between the aeration pipe and the air supply device; The reactor is also equipped with at least one of bottom instruments, lower instruments, middle instruments, and top instruments; the top instrument is a pressure gauge and / or a temperature gauge. The middle instrument is a pressure sensor and / or a temperature sensor; the lower instrument is at least one of a pressure sensor, a temperature sensor, and an online pH meter; the bottom instrument is at least one of a level gauge, a density meter, and a conductivity meter. The inner wall of the reactor is provided with a ceramic coating; the surface of the ceramic coating has a micron-level texture with a roughness Ra≤0.25μm.

7. The complete set of equipment for the materialization of high-salinity wastewater as described in claim 1, characterized in that, The complete set of equipment for the materialization of high-salt wastewater also includes an aminophenol recovery unit and / or a VOC quenching unit; The air inlet of the acetaminophen recovery unit is connected to the air outlet of the reactor, and the air outlet of the acetaminophen recovery unit is connected to the air inlet of the VOC quenching unit.

8. A method for materializing high-salinity wastewater, characterized in that, High-salinity wastewater is treated using the complete set of equipment for material processing of high-salinity wastewater as described in any one of claims 1-7; Includes the following steps: (1) High-salt wastewater is introduced into the reactor; (2) The high-salt wastewater in the reactor is circulated in the reactor through the high-salt wastewater circulation pipe, and gas is introduced into the reactor; (3) Gas-liquid separation to obtain treated high-salt wastewater.

9. The method for materializing high-salinity wastewater as described in claim 8, characterized in that, The temperature inside the reactor is 45-60℃, the pH is 8.5-11.5, and the gas-liquid ratio is (500-4000):1.

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