Crystallization granulation fluidized bed that can be coordinated with water quality softening and organic matter degradation

Abstract

The utility model discloses a kind of crystallization granulation fluidized bed of softening and organic matter degradation of coordination with water quality, comprising: tank, the bottom tank connected to the lower end of tank and the separation tank connected to the upper end of tank, the inner chamber of bottom tank is fixedly embedded with the water distribution dosing aerator plate of horizontal arrangement, water distribution dosing aerator plate two ends are respectively penetrated to the outside both sides position of bottom tank, water distribution dosing aerator plate bottom side is penetrated to the position below bottom tank, the position below water distribution dosing aerator plate of bottom tank outer surface is connected with the water distribution pipe of the communication of bottom tank inner chamber;Water distribution dosing aerator plate is used to respectively carry out dosing treatment, water distribution treatment and ozone aeration treatment to water sample to be handled;The utility model can pass through the structural design of water distribution dosing aerator plate, and then give consideration to water distribution, dosing and ozone aeration function, simultaneously through high flow rate dosing cap design, improve dosing flow rate, avoid calcium carbonate scale, finally improve the use efficiency and processing quality of crystallization granulation fluidized bed.

Description

Technical Field

[0001] This utility model relates to the field of fluidized beds, and in particular to a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter. Background Technology

[0002] Crystallization granulation fluidized bed, as a fluidized bed equipment integrating crystallization and granulation processes, has become one of the important technical means for industrial wastewater treatment and resource utilization since its application in the field of water treatment. It has the characteristics of efficiently removing calcium and magnesium hardness ions from water and simultaneously forming high-particle-size, high-strength granular products. Its core principle is to control the supersaturation of the solution in the fluidized bed to promote the crystallization and precipitation of solutes (such as calcium and magnesium ions) on the surface of fluidized particles. At the same time, by utilizing the collision, aggregation and crystal growth characteristics between particles, granular products that meet specific requirements are finally formed. This technology has shown significant application value in water softening, scale inhibition in circulating cooling water systems and other fields.

[0003] However, with the increasing complexity of industrial wastewater composition and the tightening of environmental standards, the limitations of existing crystallization granulation fluidized bed technology are becoming increasingly apparent, making it difficult to meet the comprehensive needs of deep treatment and reuse of industrial wastewater. Specifically, due to differences in industry type (such as chemical, electroplating, pharmaceutical, etc.), production process (such as raw material pretreatment, reaction synthesis, product separation, etc.), and raw material types, the composition of pollutants in industrial wastewater is highly diverse. It not only contains hardness ions such as calcium and magnesium (existing in the form of carbonates, sulfates, etc.), but also often contains organic pollutants (such as phenols, anilines, surfactants, etc.), heavy metal ions, suspended solids, and other inorganic impurities. In reuse scenarios, simply removing calcium and magnesium hardness ions is far from sufficient to meet the quality requirements of reused water. If organic pollutants are not effectively degraded, they may cause problems such as corrosion of subsequent process equipment, membrane fouling, or product contamination. Therefore, it is necessary to use organic degradation facilities (such as bioreactors, advanced oxidation devices, etc.) to treat wastewater in conjunction with these facilities. However, the existing crystallization granulation fluidized bed technology only has the function of removing calcium and magnesium hardness, and an additional organic degradation unit is required. This not only significantly increases the construction investment cost of the system (such as equipment procurement, pipeline layout, site occupation, etc.), but also leads to a lengthy process flow, increased floor space, and reduced system operation economy and compactness.

[0004] Furthermore, the stability of the reagent dosing process in existing fluidized bed crystallization processes has become a key bottleneck restricting their continuous operation during long-term operation. To achieve efficient crystallization and precipitation of calcium and magnesium ions, alkaline reagents such as sodium hydroxide (NaOH) and sodium carbonate (Na2CO3) need to be continuously added to the fluidized bed to adjust the pH and control supersaturation. Currently, the mainstream dosing method mostly adopts a dosing cap structure, which uniformly disperses the reagents into the fluidized bed reaction zone through gravity or low-pressure conveying. However, since the concentration of calcium and magnesium ions in industrial wastewater is usually high (e.g., the total hardness of circulating cooling wastewater can reach hundreds of mg / L), the reagents and calcium and magnesium ions in the wastewater react in a complex manner. Rapid reactions can easily occur near the dosing cap, generating insoluble crystals such as calcium carbonate (CaCO3) and magnesium hydroxide (Mg(OH)2). If the dosing rate is low (i.e., the contact area between the dosing agent and the wastewater is limited per unit time), the dosing agent that does not diffuse in time will continue to react with the local high concentration of calcium and magnesium ions, causing crystals to deposit and scale on the surface of the dosing cap, eventually clogging the dosing holes. This problem not only leads to uncontrolled dosing of the dosing agent (some of the agent is wasted without participating in the reaction), but also disrupts the uniformity of the flow field in the fluidized bed, reduces crystallization and granulation efficiency, and in severe cases, even requires shutdown to clean the dosing cap, significantly increasing the system's maintenance costs and downtime.

[0005] In summary, existing crystallization granulation fluidized bed technology has two major shortcomings in the field of comprehensive industrial wastewater treatment: limited functionality and susceptibility to scaling and clogging. There is an urgent need to achieve functional integration and improved operational stability through technological innovation in order to meet the pressing demand for efficient reuse of industrial wastewater. Utility Model Content

[0006] The main objective of this invention is to provide a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, thereby solving all or one of the aforementioned problems in the prior art.

[0007] To solve the above-mentioned technical problems, one technical solution adopted by this utility model is: to provide a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, comprising:

[0008] The tank body, the bottom tank connected to the lower end of the tank body, and the separation tank connected to the upper end of the tank body are all vertically and coaxially arranged, and the tank body, the bottom tank, and the separation tank are interconnected.

[0009] A horizontally arranged water distribution and chemical dosing aeration disc is fixedly embedded in the inner cavity of the bottom tank. The two ends of the water distribution and chemical dosing aeration disc extend to the outer sides of the bottom tank, and one bottom side of the water distribution and chemical dosing aeration disc extends to the bottom of the bottom tank. A water distribution pipe, communicating with the inner cavity of the bottom tank, is connected to the outer surface of the bottom tank below the water distribution and chemical dosing aeration disc. The water distribution pipe is used to connect to the water sample to be treated, and the water distribution and chemical dosing aeration disc is used to perform chemical dosing treatment, water dosing treatment, and ozone aeration treatment on the water sample to be treated.

[0010] The inner cavity of the tank body, away from the water distribution and dosing aeration disc, is fixedly embedded with an inverted V-shaped flow divider, an arc-shaped guide plate, and a horizontal dosing ring from top to bottom; the inverted V-shaped flow divider is located between the separation tank and the tank body.

[0011] A water outlet pipe, which communicates with the inner cavity of the separation tank, is connected to the outer surface of the separation tank above the inverted V-shaped diversion plate.

[0012] As an improved solution, the water distribution and chemical dosing aeration disc includes: a water guiding disc and an annular aeration trough;

[0013] The water guiding disc is hollow and is horizontally embedded in the inner cavity of the bottom tank, close to the tank body.

[0014] A first dosing pipe is connected to one side of the water guide disc and is arranged radially along the water guide disc. The first dosing pipe is located outside the bottom tank, and one end of the first dosing pipe penetrates into the inner cavity of the bottom tank and communicates with the inner cavity of the water guide disc. The other end of the first dosing pipe is used to input the first treatment agent.

[0015] The upper surface of the annular aeration trough is grooved along the circumference of the annular aeration trough, and the annular aeration trough is attached to the lower surface of the water guide disc. An aeration pipe is connected to one side of the annular aeration trough and is arranged radially along the water guide disc. One end of the aeration pipe passes through the inner cavity of the bottom tank and communicates with the inner cavity of the annular aeration trough. The other end of the aeration pipe is used to connect to an ozone generator.

[0016] The water guiding disc has several functional holes arranged radially and uniformly along the water guiding disc. The several functional holes are used to perform chemical treatment, water treatment and ozone aeration treatment on the water sample to be treated respectively.

[0017] A sludge discharge hole is provided at the center of the bottom of the water guide disc, avoiding the functional hole, and is not connected to the inner cavity of the water guide disc. A sludge discharge pipe is connected to the sludge discharge hole and extends to the bottom of the bottom tank.

[0018] As an improved solution, the plurality of functional holes include: a first water distribution hole corresponding to the annular aeration groove, and a second water distribution hole and a medicine distribution hole not corresponding to the annular aeration groove.

[0019] The first water distribution hole and the second water distribution hole are respectively vertically arranged through the water guiding disk. The medicine distribution hole is connected to the inner cavity of the water guiding disk, and the medicine distribution hole is an opening on the upper surface of the water guiding disk. The second water distribution hole and the medicine distribution hole are adjacent and spaced apart.

[0020] As an improved solution, an aeration cap is provided in the first water distribution hole, a water distribution cap is provided in the second water distribution hole, and a dosing cap is provided in the dosing hole.

[0021] As an improved solution, a guide tube is provided in the tank along the length of the tank body. The guide tube is arranged coaxially with the tank body, and the diameter of the guide tube is smaller than the diameter of the tank body.

[0022] Several connecting plates are arranged along the circumference of the outer wall of the guide tube, and each connecting plate is connected to the outer wall of the guide tube and the inner wall of the tank at both ends.

[0023] As an improved solution, the horizontal dosing ring is hollow and positioned above the guide tube, and is attached to the inner wall of the separator.

[0024] The lower surface of the horizontal dosing ring is provided with a first dosing slit along the circumference of the horizontal dosing ring. A second dosing pipe is connected to one side of the horizontal dosing ring, which extends through to the outside of the separation tank and is horizontally arranged. The second dosing pipe is in communication with the inner cavity of the horizontal dosing ring and is used to input the first treatment agent.

[0025] As an improved solution, there are two arc-shaped guide plates, and the two arc-shaped guide plates are symmetrically embedded in the inner cavity of the tank near the horizontal dosing ring;

[0026] One side of each of the two arc-shaped guide vanes is connected to the inner wall of the tank, and there is a distance between the two arc-shaped guide vanes. The concave surfaces of the two arc-shaped guide vanes are both facing downwards.

[0027] As an improved solution, the inverted V-shaped flow divider is embedded in the inner cavity of the tank near the arc-shaped guide plate, with the opening of the inverted V-shaped flow divider facing downwards, and the top two sides of the inverted V-shaped flow divider are respectively connected to the inner wall of the tank.

[0028] As an improved solution, the separator includes: a collection pipe, an overflow pipe, and a gas collection hood;

[0029] The collecting pipe is vertically connected to the top of the tank at the position corresponding to the inverted V-shaped diverter plate;

[0030] The diameter of the overflow pipe is larger than the diameter of the collecting pipe. The overflow pipe is vertically sleeved on the top of the collecting pipe. The bottom of the overflow pipe is flush with the top of the collecting pipe, and the bottom edge of the overflow pipe is connected to the top edge of the collecting pipe.

[0031] The overflow pipe has several water outlet weirs at its top edge, and the several water outlet weirs are evenly arranged along the circumference of the overflow pipe; the several water outlet weirs include: several triangular weirs;

[0032] The gas collection hood is installed outside the overflow pipe, and the top of the gas collection hood is open. The gas collection hood is semi-circular.

[0033] The water outlet pipe is connected to one side of the outer surface of the gas collection hood, and the water outlet pipe is in communication with the inside of the gas collection hood.

[0034] As an improved solution, the dosing cap is hollow and cylindrical;

[0035] The lower end of the dosing cap is open, and the lower end of the dosing cap is the drug inlet. There is a distance between the drug inlet and the bottom of the drug distribution hole.

[0036] The outer surface of the dosing cap is provided with several second drug distribution seams along the circumference of the dosing cap near the upper end of the dosing cap. These seams communicate with the inner cavity of the dosing cap. There is a gap between adjacent second drug distribution seams, and the several second drug distribution seams are evenly distributed.

[0037] The beneficial effects of this utility model are as follows: Through the structural design of the key water distribution, chemical dosing, and aeration disc, this utility model enables the device to simultaneously perform water distribution, chemical dosing, and ozone aeration functions. At the same time, by adopting a new type of dosing cap, this device increases the dosing flow rate, avoids calcium carbonate scaling, and ultimately improves the utilization efficiency and treatment quality of the crystallization granulation fluidized bed, reduces its maintenance costs, and extends its service life. It makes up for the deficiencies of the prior art and has high application value. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural diagram of a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0039] Figure 2 This is a three-dimensional structural diagram of a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter in an embodiment of this utility model, viewed from another perspective.

[0040] Figure 3This is a top view schematic diagram of a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter in an embodiment of this utility model;

[0041] Figure 4 This is a schematic diagram of the AA cross-sectional structure of a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter in an embodiment of this utility model;

[0042] Figure 5 This is a three-dimensional perspective structural diagram of a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, as described in this utility model embodiment.

[0043] Figure 6 This is a three-dimensional structural diagram of the water distribution and dosing aeration disc in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0044] Figure 7 This is a three-dimensional structural diagram of the water distribution and dosing aeration disc in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, as described in an embodiment of this utility model, from another perspective.

[0045] Figure 8 This is a front view schematic diagram of the water distribution and dosing aeration disc in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0046] Figure 9 This is a BB cross-sectional view of the water distribution and dosing aeration disc in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0047] Figure 10 This is a three-dimensional structural diagram of the annular aeration tank in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0048] Figure 11 This is a three-dimensional structural diagram of the dosing cap in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0049] Figure 12 yes Figure 11 Enlarged structural diagram at point A;

[0050] Figure 13 This is a three-dimensional structural diagram of the guide tube in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0051] Figure 14 This is a three-dimensional structural diagram of the horizontal dosing ring in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0052] Figure 15 This is a three-dimensional structural diagram of the horizontal dosing ring in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, as described in an embodiment of this utility model, from another perspective.

[0053] Figure 16 yes Figure 15 Enlarged structural diagram at point B;

[0054] Figure 17 This is a three-dimensional structural schematic diagram of the overflow pipe in a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, according to an embodiment of this utility model.

[0055] The components in the attached diagram are labeled as follows:

[0056] 1. Tank body; 11. Flow guide tube; 12. Connecting plate; 13. Horizontal dosing ring; 14. First dosing seam; 15. Second dosing pipe; 16. Arc-shaped flow guide plate; 17. Inverted V-shaped flow divider plate;

[0057] 2. Bottom tank; 21. Water guide disc; 22. Annular aeration trough; 23. First dosing pipe; 24. Aeration pipe; 25. Water distribution pipe; 26. Sludge discharge pipe; 27. First water distribution hole; 28. Second water distribution hole; 29. ​​Dosing hole; 201. Dosing cap; 2011. Dosing inlet end; 2012. Second dosing slot; 2013. Functional hole;

[0058] 3. Separator; 31. Collection pipe; 32. Overflow pipe; 33. Gas collection hood; 34. Water outlet weir; 35. Water outlet pipe. Detailed Implementation

[0059] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0065] Please see Figures 1-17 The present invention includes: a crystallizing granulation fluidized bed that can synergistically soften water and degrade organic matter, comprising: a tank 1, a bottom tank 2 connected to the lower end of the tank 1, and a separation tank 3 connected to the upper end of the tank 1. The tank 1, the bottom tank 2, and the separation tank 3 are all vertically and coaxially arranged, and the tank 1, the bottom tank 2, and the separation tank 3 are interconnected.

[0066] In one embodiment of this utility model, a horizontally arranged water distribution and chemical dosing aeration disc is fixedly embedded in the inner cavity of the bottom tank 2. The two ends of the water distribution and chemical dosing aeration disc extend to the outer sides of the bottom tank 2, and one bottom side of the water distribution and chemical dosing aeration disc extends to the bottom of the bottom tank 2. A water distribution pipe 25, which communicates with the inner cavity of the bottom tank 2, is connected to the outer surface of the bottom tank 2 below the water distribution and chemical dosing aeration disc. The water distribution pipe 25 is used to connect to the water sample to be treated, and the water distribution and chemical dosing aeration disc is used to perform chemical dosing treatment, water dosing treatment, and ozone aeration treatment on the water sample to be treated.

[0067] Optionally, the water distribution and aeration disc includes: a water guide disc 21 and an annular aeration trough 22; the water guide disc 21 is hollow and horizontally embedded in the inner cavity of the bottom tank 2, close to the tank body 1; a first dosing pipe 23 is connected to one side of the water guide disc 21 and is arranged radially along the water guide disc 21. The first dosing pipe 23 is located outside the bottom tank 2, corresponding to the position of the water guide disc 21, and one end of the first dosing pipe 23 horizontally penetrates into the inner cavity of the bottom tank 2 and communicates with the inner cavity of the water guide disc 21. The other end of the first dosing pipe 23 is used to input a first treatment agent; specifically, the first treatment agent includes sodium hydroxide and sodium carbonate, sodium hydroxide is used to maintain the pH between 11 and 12, and the dosage of sodium carbonate is 10-500 mg / L;

[0068] Optionally, the annular aeration tank 22 is designed in a circular shape, and its upper surface is grooved around the circumference of the annular aeration tank 22. The annular aeration tank 22 is attached to the lower surface of the water guide disc 21. An aeration pipe 24 is connected to one side of the annular aeration tank 22 and is arranged radially along the water guide disc 21. One end of the aeration pipe 24 extends horizontally into the inner cavity of the bottom tank 2 and communicates with the inner cavity of the annular aeration tank 22. The other end of the aeration pipe 24 is used to connect to the ozone generator.

[0069] Optionally, the water guide disc 21 is provided with a plurality of functional holes 2013 arranged radially and evenly along the water guide disc 21. These functional holes 2013 respectively support corresponding chemical distribution treatment, water distribution treatment, and ozone aeration treatment. Specifically, as a key design feature of this device, the functional holes 2013 include: a first water distribution hole 27 corresponding to the annular aeration trough 22, and a second water distribution hole 28 and a chemical distribution hole 29 not corresponding to the annular aeration trough 22; wherein, the first water distribution hole 27 and... The second water distribution holes 28 are vertically inserted through the water guiding disk 21; the medicine distribution holes 29 communicate with the inner cavity of the water guiding disk 21, but the medicine distribution holes 29 do not penetrate the water guiding disk 21, and are openings on the upper surface of the water guiding disk 21. The second water distribution holes 28 and the medicine distribution holes 29 are adjacent and spaced apart. In a preferred embodiment, the first water distribution holes 27 are arranged in a ring on the water guiding disk 21, and a set of second water distribution holes 28 and medicine distribution holes 29 are arranged in a ring on the water guiding disk 21 located at the intersection of the first water distribution holes 27. The inner ring of the water distribution ring has another set of second water distribution holes 28 and chemical distribution holes 29 arranged in a ring on the water guide disc 21, located on the outer ring of the water distribution ring formed by the first water distribution hole 27. An aeration cap is installed in the first water distribution hole 27, a water distribution cap is installed in the second water distribution hole 28, and a chemical dosing cap 201 is installed in the chemical dosing hole 29. The water distribution cap is a stainless steel cap, and the chemical dosing cap 201 is hollow and cylindrical. The lower end of the chemical dosing cap 201 is open, and the lower opening is the chemical inlet end 2011. A distance is provided between the drug inlet end 2011 and the bottom of the drug distribution hole 29; several second drug distribution seams 2012 communicating with the inner cavity of the drug distribution cap 201 are opened along the circumference of the outer surface of the drug distribution cap 201 near the upper end of the drug distribution cap 201, with a gap between adjacent second drug distribution seams 2012, and the several second drug distribution seams 2012 are evenly arranged; in this embodiment, the gap height of the second drug distribution seam 2012 is 0.25mm, and it is processed by wire cutting; the drug distribution cap 201

[0070] The flow rate is 3-10 times that of the water distribution cap, and the dosing flow rate is above 800m / h; the aeration cap is the ozone aeration head, which adopts high-temperature sintered aeration head.

[0071] Optionally, a sludge discharge hole is provided at the center of the bottom of the water guide disc 21 at the position of the avoidance function hole 2013. The sludge discharge hole is vertically penetrating the water guide disc 21 and is not connected to the inner cavity of the water guide disc 21. A sludge discharge pipe 26 is connected to the sludge discharge hole, which is vertically penetrating to the bottom of the bottom tank 2 and extends horizontally to the outside of the bottom tank 2.

[0072] As one embodiment of this utility model, an inverted V-shaped diversion plate 17, an arc-shaped guide plate 16, and a horizontal dosing ring 13 are fixedly embedded in the inner cavity of the tank body 1 from top to bottom at a position away from the water distribution and dosing aeration disc; the inverted V-shaped diversion plate 17 is located between the separation tank 3 and the tank body 1.

[0073] Optionally, in order to achieve the flow guiding function, a flow guiding cylinder 11 is provided in the tank body 1 along the length direction of the tank body 1. The flow guiding cylinder 11 is arranged coaxially with the tank body 1, and the diameter of the flow guiding cylinder 11 is smaller than the diameter of the tank body 1. Several connecting plates 12 are arranged on the outer wall of the flow guiding cylinder 11 along the circumference of the flow guiding cylinder 11. Each connecting plate 12 is arranged vertically, and the two ends of each connecting plate 12 are respectively connected to the outer wall of the flow guiding cylinder 11 and the inner wall of the tank body 1 to achieve the fixing function of the flow guiding cylinder 11.

[0074] Optionally, to supplement the dosing, a horizontal dosing ring 13 is provided. The horizontal dosing ring 13 is hollow and is positioned above the guide tube 11. The horizontal dosing ring 13 is attached to the inner wall of the separator 3. A first dosing slit 14 is formed on the lower surface of the horizontal dosing ring 13 along its circumference. The slit width of the first dosing slit 14 is 0.25 mm. It is also processed by wire cutting, and its dosing flow rate is the same as that at the dosing cap 201. A second dosing pipe 15 is connected to one side of the horizontal dosing ring 13, extending to the outside of the separator 3 and horizontally positioned. The second dosing pipe 15 communicates with the inner cavity of the horizontal dosing ring 13 and is used to supplement the input of sodium carbonate and sodium hydroxide.

[0075] Optionally, in order to maintain the circulation of seed crystals and catalyst particles in the fluidized bed, two arc-shaped guide plates 16 are provided, and the two arc-shaped guide plates 16 are symmetrically embedded in the inner cavity of the tank 1 near the horizontal dosing ring 13; the side walls of the two arc-shaped guide plates 16 that are far apart from each other are connected to the inner wall of the tank 1, and there is a distance between the two arc-shaped guide plates 16, and the concave surfaces of the two arc-shaped guide plates 16 are both set downwards;

[0076] Optionally, in order to prevent the seed crystals from flowing into the top collection area of ​​the separator 3, an inverted V-shaped diverter plate 17 is embedded in the inner cavity of the tank 1 near the arc-shaped guide plate 16, with the opening of the inverted V-shaped diverter plate 17 facing downwards. The top two sides of the inverted V-shaped diverter plate 17 are respectively connected to the inner wall of the tank 1. This diverter plate design is also an innovative part of this device that distinguishes it from the existing technology.

[0077] As one embodiment of this utility model, the separator tank 3 includes: a collecting pipe 31, an overflow pipe 32, and a gas collecting hood 33; the collecting pipe 31 is vertically connected to the top of the tank body 1 at the position corresponding to the inverted V-shaped diverter plate 17; the diameter of the overflow pipe 32 is larger than the diameter of the collecting pipe 31, the overflow pipe 32 is vertically sleeved on the top of the collecting pipe 31, the bottom of the overflow pipe 32 is flush with the top of the collecting pipe 31, and the bottom edge of the overflow pipe 32 is connected to the top edge of the collecting pipe 31;

[0078] Optionally, a plurality of water outlet weirs 34 are provided at the top edge of the overflow pipe 32. The plurality of water outlet weirs 34 are evenly arranged around the circumference of the overflow pipe 32. The overflow pipe 32 is mainly used as an overflow weir in this device for the purpose of separating water at the top. In terms of shape, it includes, but is not limited to, the use of a triangular water outlet weir, i.e., a triangular weir.

[0079] Optionally, the gas collection hood 33 is installed outside the overflow pipe 32. The gas collection hood 33 is semi-circular and has an opening at the top, which is the gas outlet. The gas collection hood 33 is used to collect excess ozone overflowing from the tank 1.

[0080] Optionally, a water outlet pipe 35 is connected to the outer surface of the separator tank 3 above the inverted V-shaped diversion plate 17, and communicates with the inner cavity of the separator tank 3; the water outlet pipe 35 is connected to one side of the outer surface of the gas collection hood 33, and the water outlet pipe 35 communicates with the inside of the gas collection hood 33.

[0081] As one embodiment of this utility model, the bottom tank 2 of the crystallization granulation fluidized bed is filled with 0.4-0.8mm manganese dioxide catalyst particles and garnet seed particles in a 1:1 ratio, which simultaneously takes into account the crystallization granulation and ozone catalysis effects. The upward flow velocity of the crystallization granulation fluidized bed is 60-100m / h.

[0082] As one embodiment of this utility model, the operating principle of this device is as follows: Before the fluidized bed stops operating, the residual sodium hydroxide and sodium carbonate reagents inside the device are rinsed with clean water to prevent scaling during shutdown. During use, water (the water sample to be treated) is introduced through the bottom water distribution pipe 25. The water sample enters the reaction zone above the bottom tank 2 through the water distribution cap on the water distribution and dosing aeration plate. At this time, the first dosing pipe 23 is started to add sodium hydroxide and sodium carbonate reagents, so that the reaction zone is saturated with calcium carbonate. At the same time, the ozone generator is started, and the ozone flows through the aeration pipe 24 and is injected into the reaction zone through the ozone aeration head. Then, garnet seed particles of 0.4-0.6 mm circulate in the reaction zone, causing the liquid in the calcium carbonate saturated state to undergo heterogeneous crystallization on the surface of the seed particles. Calcium carbonate is attached and grown on the surface of the seed particles, achieving the effect of removing calcium and magnesium hardness from the wastewater. At the same time, under the catalytic action of manganese dioxide catalyst particles, ozone removes organic matter from the wastewater more efficiently.

[0083] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A crystallizing granulation fluidized bed capable of synergistic water softening and organic matter degradation, characterized in that, include: The tank (1), the bottom tank (2) connected to the lower end of the tank (1), and the separation tank (3) connected to the upper end of the tank (1) are all vertical and coaxially arranged, and the tank (1), the bottom tank (2) and the separation tank (3) are interconnected. A horizontally arranged water distribution and chemical dosing aeration disc is fixedly embedded in the inner cavity of the bottom tank (2). The two ends of the water distribution and chemical dosing aeration disc extend to the outer sides of the bottom tank (2), and one bottom side of the water distribution and chemical dosing aeration disc extends to the bottom of the bottom tank (2). A water distribution pipe (25) communicating with the inner cavity of the bottom tank (2) is connected to the outer surface of the bottom tank (2) below the water distribution and chemical dosing aeration disc. The water distribution pipe (25) is used to connect the water sample to be treated, and the water distribution and chemical dosing aeration disc is used to perform chemical dosing treatment, water dosing treatment, and ozone aeration treatment on the water sample to be treated. The inner cavity of the tank (1) is provided with an inverted V-shaped diversion plate (17), an arc-shaped guide plate (16) and a horizontal dosing ring (13) fixedly embedded from top to bottom at a position away from the water distribution and dosing aeration disc; the inverted V-shaped diversion plate (17) is located between the separation tank (3) and the tank (1); The outer surface of the separator (3) is connected to an outlet pipe (35) that communicates with the inner cavity of the separator (3) at a position above the inverted V-shaped diversion plate (17).

2. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 1, characterized in that: The water distribution and chemical dosing aeration disc includes: a water guide disc (21) and an annular aeration trough (22); The water guiding disc (21) is hollow and is horizontally embedded in the inner cavity of the bottom tank (2) and close to the tank body (1); A first dosing pipe (23) is connected to one side of the water guide disc (21) and is arranged radially along the water guide disc (21). The first dosing pipe (23) is located outside the bottom tank (2), and one end of the first dosing pipe (23) penetrates into the inner cavity of the bottom tank (2) and communicates with the inner cavity of the water guide disc (21). The other end of the first dosing pipe (23) is used to input the first treatment agent. The upper surface of the annular aeration trough (22) is grooved around the circumference of the annular aeration trough (22), and the annular aeration trough (22) is attached to the lower surface of the water guide disc (21). An aeration pipe (24) is connected to one side of the annular aeration trough (22) and is arranged radially along the water guide disc (21). One end of the aeration pipe (24) penetrates into the inner cavity of the bottom tank (2) and communicates with the inner cavity of the annular aeration trough (22). The other end of the aeration pipe (24) is used to connect to an ozone generator. The water guiding disc (21) is provided with a plurality of functional holes (2013) arranged radially and uniformly along the water guiding disc (21). The plurality of functional holes (2013) are respectively used to perform drug treatment, water treatment and ozone aeration treatment on the water sample to be treated. The bottom center of the water guide disc (21) is provided with a sludge discharge hole that passes through the water guide disc (21) and is not connected to the inner cavity of the water guide disc (21). The sludge discharge hole is connected to a sludge discharge pipe (26) that passes through to the bottom tank (2).

3. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 2, characterized in that: The plurality of functional holes (2013) include: a first water distribution hole (27) provided corresponding to the annular aeration groove (22), and a second water distribution hole (28) and a medicine distribution hole (29) not provided corresponding to the annular aeration groove (22); The first water distribution hole (27) and the second water distribution hole (28) are respectively vertically inserted through the water guide disk (21). The medicine distribution hole (29) is connected to the inner cavity of the water guide disk (21), and the medicine distribution hole (29) is an opening on the upper surface of the water guide disk (21). The second water distribution hole (28) and the medicine distribution hole (29) are adjacent and spaced apart.

4. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 3, characterized in that: An aeration cap is provided in the first water distribution hole (27), a water distribution cap is provided in the second water distribution hole (28), and a dosing cap (201) is provided in the dosing hole (29).

5. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 1, characterized in that: A flow guide tube (11) is provided in the tank (1) along the length direction of the tank (1). The flow guide tube (11) is arranged coaxially with the tank (1), and the diameter of the flow guide tube (11) is smaller than the diameter of the tank (1). A plurality of connecting plates (12) are provided on the outer wall of the guide tube (11) along the circumference of the guide tube (11), and each connecting plate (12) is connected at both ends to the outer wall of the guide tube (11) and the inner wall of the tank (1).

6. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 5, characterized in that: The horizontal dosing ring (13) is hollow and is positioned above the guide tube (11). The horizontal dosing ring (13) is attached to the inner wall of the separator (3). The lower surface of the horizontal dosing ring (13) is provided with a first dosing slit (14) along the circumference of the horizontal dosing ring (13). A second dosing pipe (15) is connected to one side of the horizontal dosing ring (13) and extends through to the outside of the separation tank (3) and is horizontally arranged. The second dosing pipe (15) communicates with the inner cavity of the horizontal dosing ring (13) and is used to input the first treatment agent.

7. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 1, characterized in that: There are two arc-shaped guide plates (16), and the two arc-shaped guide plates (16) are symmetrically embedded in the inner cavity of the tank (1) near the horizontal dosing ring (13); One side of each of the two arc-shaped guide plates (16) is connected to the inner wall of the tank (1), and there is a distance between the two arc-shaped guide plates (16), with the concave surfaces of the two arc-shaped guide plates (16) facing downwards.

8. The crystallizing granulation fluidized bed according to claim 1, characterized in that: The inverted V-shaped diverter plate (17) is embedded in the inner cavity of the tank body (1) near the arc-shaped guide plate (16), and the opening of the inverted V-shaped diverter plate (17) is set downward. The top two sides of the inverted V-shaped diverter plate (17) are respectively connected to the inner wall of the tank body (1).

9. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 1, characterized in that: The separator (3) includes: a collection pipe (31), an overflow pipe (32), and a gas collection hood (33); The collecting pipe (31) is vertically connected to the top of the tank (1) at the position corresponding to the inverted V-shaped diverter plate (17); The diameter of the overflow pipe (32) is larger than the diameter of the collecting pipe (31). The overflow pipe (32) is vertically sleeved on the top of the collecting pipe (31). The bottom of the overflow pipe (32) is flush with the top of the collecting pipe (31), and the bottom edge of the overflow pipe (32) is connected to the top edge of the collecting pipe (31). The overflow pipe (32) has several outlet weirs (34) at its top edge, and the outlet weirs (34) are evenly arranged around the overflow pipe (32); the outlet weirs (34) include several triangular weirs; The gas collection hood (33) is installed outside the overflow pipe (32), and the top of the gas collection hood (33) is open. The gas collection hood (33) is semi-circular. The water outlet pipe (35) is connected to one side of the outer surface of the gas collection hood (33), and the water outlet pipe (35) is in communication with the inside of the gas collection hood (33).

10. The crystallizing granulation fluidized bed with synergistic water softening and organic matter degradation according to claim 4, characterized in that: The dosing cap (201) is hollow and cylindrical. The lower end of the dosing cap (201) is open, and the lower end of the dosing cap (201) is the inlet end (2011). There is a distance between the inlet end (2011) and the bottom of the dosing hole (29). The outer surface of the dosing cap (201) near the upper end of the dosing cap (201) has a plurality of second dosing seams (2012) that communicate with the inner cavity of the dosing cap (201) along the circumference of the dosing cap (201). There is a gap between adjacent second dosing seams (2012), and the plurality of second dosing seams (2012) are evenly arranged.

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