Chemical crystallization particle fluidized bed water treatment device

Abstract

The application provides a chemical crystallization particle fluidized bed water treatment equipment, and relates to the technical field of fluidized bed water treatment equipment, which comprises the following steps: a vertical fluidization cylinder is welded at the inner center position of a tank body, and the water outlet end of a seed adding pipe is communicated with the inside of the fluidization cylinder; two vertical sewage guide pipes are symmetrically welded through the bottom plate of the tank body, the top end of the two vertical sewage guide pipes is welded with a water distribution ring groove, and the bottom of the two vertical sewage guide pipes is welded and fixed with a sewage inlet part; a ring of surrounding water spray pipes is welded through the water distribution ring groove, and the upper half of the water spray pipe is arranged in an inclined manner. A circulating channel of sewage is formed between the fluidization zone and the sedimentation zone, so that part of the sewage repeatedly circulates into the fluidization cylinder through the circulating channel. In the process of repeated circulation, the contact frequency of the sewage and the softening agent is effectively increased, the contact reaction time of the sewage and the softening agent is prolonged, and the full softening treatment of the sewage is facilitated.

Description

Technical Field

[0001] This invention relates to the field of fluidized bed water treatment equipment technology, and in particular to a chemical crystallization particle fluidized bed water treatment equipment. Background Technology

[0002] Excessive hardness in drinking water can cause digestive problems such as gastrointestinal disorders, bloating, excessive flatulence, and diarrhea, and may even lead to kidney stones. Excessive hardness in industrial water can cause scaling on pipe and equipment walls during recycling or reuse, reducing the cross-sectional area of ​​pipes and equipment, thus decreasing the flow rate of circulating water and potentially causing blockages, reducing heat exchange efficiency, and even leading to safety accidents. Furthermore, water with excessive hardness contains calcium and magnesium ions, which can react with compounds to form calcium stearate and magnesium stearate, reducing the effectiveness of detergents. Therefore, water softening treatment is essential for both industrial and drinking water use.

[0003] Chemical crystallization granulation fluidized bed technology involves loading an appropriate amount of mineral particles as seed crystals into a crystallization reactor, then adding specific chemical agents to the water. These agents react with the ions to be removed from the wastewater to form sparingly soluble salt crystals that deposit on the surface of the seed crystals. As the seed crystals grow and develop, they eventually form crystalline particles with a certain size and strength. Larger crystalline particles are periodically discharged to remove and recover target pollutants from the water. This process has gained widespread attention in the water treatment field due to its low consumption, high efficiency, and lack of secondary pollution.

[0004] First, in existing fluidized bed water treatment equipment, sewage mostly flows directly from bottom to top, which cannot or is difficult to circulate within the equipment. The direct flow path is relatively short, resulting in a short contact reaction time between sewage and softening agents, and insufficient reaction, which in turn affects the softening effect of sewage.

[0005] Secondly, once the seed crystals settle, they become confined to the bottom space of the equipment, making it difficult for them to re-enter the wastewater flow path for repeated recycling. This results in insufficient utilization of the seed crystals, requiring continuous replenishment, which increases the consumption of seed crystals and is detrimental to improving the company's efficiency. Summary of the Invention

[0006] In view of this, the present invention provides a chemical crystallizing granular fluidized bed water treatment device to solve the problem that sewage is mostly discharged from bottom to top in a direct flow, and the direct flow path is relatively short, resulting in a short contact reaction time between sewage and softening agent, insufficient reaction, and thus affecting the sewage softening treatment effect.

[0007] The technical solution proposed in this invention is: a chemical crystallization particle fluidized bed water treatment device, specifically including a tank, a dosing pipe, a sewage inlet component, and a seed crystal addition pipe; the dosing pipe is suspended at the center of the tank, and the sewage inlet component is suspended at the bottom of the tank, and the seed crystal addition pipe is welded through the outer circumference of the tank.

[0008] A vertically arranged fluidizing cylinder is welded to the center of the tank. The fluidizing cylinder is fitted with a dosing pipe, and the outlet of the seeding pipe is connected to the inside of the fluidizing cylinder. Two vertically supporting sewage pipes are symmetrically welded through the bottom plate of the tank. A water distribution groove is welded to the top of the two vertically supporting sewage pipes, and the bottom of the two vertically supporting sewage pipes is welded and fixed to the sewage inlet component.

[0009] A ring of water spray pipes is welded through the water distribution groove. The upper half of the water spray pipes is inclined, and the water outlet at the top of the water spray pipes is located in the tangential direction of the inner wall of the fluidizing cylinder. The lower half of the water spray pipes is vertically supported.

[0010] The fluidizing cylinder has a ring of rotatable blades installed in the space at the bottom. A horizontally arranged water-blocking ring plate is suspended at the bottom of the ring of blades. The water-blocking ring plate rotates and fits into the bottom nozzle of the ring of water spray pipes. A water passage groove is opened through the water-blocking ring plate.

[0011] The top nozzle of the ring of water spray pipes sprays water towards the ring of blades and forms an upward swirling flow inside the fluidizing cylinder. A settling zone with an annular structure is formed between the fluidizing cylinder and the tank body, and a fluidizing zone is formed inside the fluidizing cylinder. A portion of the wastewater forms a circulation channel between the fluidizing zone and the settling zone. The grown seed crystals settle in the bottom space of the tank body, and the bottom nozzle of the ring of water spray pipes sprays water towards the settled seed crystals.

[0012] Furthermore,

[0013] The bottom part of the tank body has a conical guide structure, and a discharge pipe is welded to the conical part of the bottom of the tank body. A gradually expanding cover and a clear water cylinder are welded to the top of the tank body in sequence, and a clear water outlet pipe is welded to the outer circumference of the clear water cylinder.

[0014] A clean water outlet pipe is connected to a fixed hydrochloric acid mixing cylinder, and an external alkali supply system is connected to the hydrochloric acid mixing cylinder.

[0015] A separation zone is formed in the expanding hood, and a clear water zone is formed in the clear water cylinder.

[0016] Furthermore,

[0017] A hollow water guide cone is welded and hoisted at the bottom center of the tank's top plate, with the circumferential conical surface of the water guide cone bent inward toward the central axis.

[0018] Furthermore,

[0019] The dosing pipe is arranged vertically, and a ring of spray holes is opened around the outer circumference of the dosing pipe. The top of the dosing pipe is welded with a chemical inlet pipe, which slides through and is fixed to the center of the top plate of the tank body by screws.

[0020] Furthermore,

[0021] The seed tube has a T-shaped structure, and a row of short nozzles is welded at equal intervals on the vertical section of the seed tube. The row of short nozzles is welded through to the circumferential sidewall of the fluidizing cylinder.

[0022] Furthermore,

[0023] A water distribution area is formed in the bottom space of the fluidizing cylinder near a ring of water spray pipes;

[0024] A rotating ring is rotatably installed on the inner circumference of the bottom space of the fluidizing cylinder. A ring of blades is welded around the rotating ring. Two vertical transmission rods are symmetrically welded between the blades and the water-blocking ring plate at two symmetrical positions. The two vertical transmission rods rotate in the annular space between the water distribution ring groove and the inner wall of the fluidizing cylinder.

[0025] Furthermore,

[0026] The wastewater inlet component is an inlet annular groove, and a wastewater inlet pipe is welded to the outer circumference of the inlet annular groove.

[0027] The chemical crystallization particle fluidized bed water treatment equipment provided by this invention has the following beneficial effects:

[0028] When this invention is in use, due to the high flow rate in the fluidizing cylinder and the low internal pressure according to Bernoulli's principle, a suction effect is generated on the sewage at the bottom opening. The swirling flow inside the fluidizing cylinder also generates a certain suction effect. The superposition of these two suction forces can draw the water at the bottom of the fluidizing cylinder upwards. When the water at the bottom of the fluidizing cylinder is emptied, the water in the bottom space of the settling zone will flow to the bottom of the fluidizing cylinder to make up for it. In this way, a sewage circulation channel is formed between the fluidizing zone and the settling zone, which allows a portion of the sewage to be repeatedly circulated into the fluidizing cylinder through the circulation channel. During the repeated circulation process, this portion of sewage effectively increases the number of times it comes into contact with the softening agent and prolongs the contact reaction time with the softening agent, which helps to fully soften the sewage.

[0029] In addition, when wastewater circulates into the fluidized bed, some of the lighter seed crystals that have settled at the bottom of the tank can be drawn back into the fluidized bed and added to the wastewater flow path for repeated use. Compared with existing technologies, this method has a higher utilization rate and makes fuller use of seed crystals, which helps to reduce the amount of seed crystals added, reduce seed crystal consumption, and improve the economic benefits of enterprises.

[0030] In addition, the bottom nozzles of the ring of water spray pipes spray towards the settling seed crystals, which can lift the seed crystals settled at the bottom of the tank. This facilitates the suction of lighter seed crystals into the fluidized bed, preventing the seed crystals from settling and accumulating together and being unable or difficult to be suctioned into the fluidized bed for reuse. This helps ensure the normal implementation of the seed crystal reuse function. Furthermore, the seed crystal lifting operation is carried out by the impact force of the sewage jet, without the need for additional lifting mechanisms and lifting power.

[0031] Furthermore, when the baffle ring rotates, its upper water channel can sequentially overlap with a ring of bottom nozzles, controlling the sequential opening of the ring of bottom nozzles to intermittently spray and lift the settled crystals at the bottom of the tank. Firstly, the circumferential spray can comprehensively lift the crystals distributed around the bottom of the tank. Secondly, controlling the sequential intermittent opening of the ring of bottom nozzles reduces the downward spray volume compared to all of them being constantly open, thus reducing the consumption of spray pressure in the water distribution ring groove. This allows the ring of spray pipes to have sufficient pressure to drive the ring of blades and the baffle ring to rotate and generate swirling flow, which helps to ensure the normal implementation of the intermittent spray lifting function. In addition, reducing the downward jet of water can reduce the disturbance when the sewage circulates into the fluidizing cylinder. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0033] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0034] In the attached diagram:

[0035] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is shown;

[0036] Figure 2 A schematic diagram of the inner half-section structure of the tank body according to an embodiment of the present invention is shown;

[0037] Figure 3 A schematic diagram of the overall bottom side structure of an embodiment of the present invention is shown;

[0038] Figure 4 A schematic diagram of the sewage flow path according to an embodiment of the present invention is shown;

[0039] Figure 5 A schematic diagram of the blade structure according to an embodiment of the present invention is shown;

[0040] Figure 6 A schematic diagram of the water spray pipe structure according to an embodiment of the present invention is shown;

[0041] Figure 7A schematic diagram of the water-blocking ring plate structure according to an embodiment of the present invention is shown;

[0042] List of reference numerals

[0043] 1. Tank body; 101. Gradually expanding hood; 102. Clean water cylinder; 103. Hydrochloric acid mixing cylinder; 104. Particle discharge pipe; 105. Clean water outlet pipe; 106. Vertical support sewage conduit; 107. Water guide cone;

[0044] 2. Dosing tube; 201. Chemical inlet tube;

[0045] 3. Inlet annular groove;

[0046] 4. Add seed tube; 401, short nozzle;

[0047] 5. Fluidizing cylinder; 501. Rotating ring; 502. Blade; 503. Vertical drive rod; 504. Water baffle ring; 505. Water passage trough;

[0048] 6. Water distribution groove; 601. Spray pipe;

[0049] 8. Settlement zone;

[0050] 7. Water distribution area;

[0051] 9. Fluidization zone;

[0052] 10. Separation zone;

[0053] 11. Qingshui District. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the described embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0055] Please see Figures 1 to 7 One embodiment provided by the present invention:

[0056] This invention proposes a chemical crystallization particle fluidized bed water treatment device, including a tank 1, a dosing pipe 2, a sewage inlet component, and a seed crystal addition pipe 4; the dosing pipe 2 is suspended at the center of the tank 1, and the sewage inlet component is suspended at the bottom of the tank 1, and the seed crystal addition pipe 4 is welded through the outer circumference of the tank 1.

[0057] A vertically arranged fluidizing cylinder 5 is welded to the center of the inside of the tank body 1. The fluidizing cylinder 5 is fitted with the dosing pipe 2, and the outlet end of the seeding pipe 4 is connected to the inside of the fluidizing cylinder 5. The seeding pipe 4 is connected to an external seeding system for adding seed crystals into the fluidizing cylinder 5. The seed crystals are quartz sand seed crystals modified by Na2CO3. Two vertically supporting sewage pipes 106 are symmetrically welded through the bottom plate of the tank body 1. The top of the two vertically supporting sewage pipes 106 is welded with a water distribution groove 6, and the bottom of the two vertically supporting sewage pipes 106 is welded and fixed to the sewage inlet component.

[0058] A ring of water spray pipes 601 is welded through the water distribution groove 6. The upper half of the water spray pipes 601 is inclined, and the water outlet at the top of the water spray pipes 601 is located in the tangential direction of the inner wall of the fluidizing cylinder 5. The lower half of the water spray pipes 601 is vertically supported.

[0059] A ring of blades 502 that can rotate is installed in the space at the bottom of the fluidizing cylinder 5. A horizontally arranged water baffle 504 is suspended at the bottom of the ring of blades 502. The water baffle 504 rotates and fits with the bottom nozzle of a ring of water spray pipes 601. A water passage groove 505 is opened through the water baffle 504.

[0060] It is worth noting that the wastewater entering the tank 1 should have a certain pressure so that the flow rate of the wastewater should be maintained at at least 70m / h;

[0061] Wastewater enters the distribution ring trough 6 through the inlet ring trough 3 and two vertically supported sewage pipes 106, and is sprayed out through a ring of spray pipes 601. The nozzles at the top of the spray pipes 601 spray towards a ring of blades 502. Since the outlet nozzles at the top of the spray pipes 601 are tangential to the inner wall of the fluidizing cylinder 5, they drive the blades 502 to rotate and form an upward swirling flow inside the fluidizing cylinder 5. The rotating and turbulent wastewater is conducive to fully mixing and reacting with the softening agent sprayed from the dosing pipe 2, which helps to improve the treatment effect of the wastewater. The upward swirling flow also helps to disperse and relatively evenly mix the added seed crystals in the wastewater, which is beneficial for the subsequent CaCO3 crystals produced to adhere and combine with the seed crystals. The upward swirling flow pushes the seed crystals upward. During the upward pushing of the seed crystals, the Ca in the wastewater... 2+The crystals begin to react chemically with the added reagents and gradually generate CaCO3 crystals, which adhere to the surface of the added seed crystals. As the number of crystals adhering to the seed crystal surface increases, the particles gradually become larger, eventually forming mature crystal particles with a diameter of 4-5 mm. After the seed crystals are conveyed out of the fluidizing cylinder 5 by impact, they enter the separation zone 10 and the clear water zone 11 in sequence. Due to the expansion of the diameter of the expanding hood 101 and the clear water cylinder 102, the swirling effect decreases from bottom to top. Therefore, in the separation zone 10, a portion of the larger and heavier seed crystals will be centrifuged and thrown out to the periphery of the separation zone 10 and settle down along the settling zone 8. A portion of the lighter seed crystals will continue to float in the swirling flow and continue to rise and attach and grow more CaCO3 crystals. As the volume and weight of this portion of the lighter seed crystals gradually increase, they will be centrifuged and thrown out of the swirling flow and will also settle down along the settling zone 8.

[0062] Because the flow velocity in fluidizing cylinder 5 is relatively high, its internal pressure is low according to Bernoulli's principle, which will create a suction effect on the sewage at its bottom opening. The swirling flow inside fluidizing cylinder 5 will also produce a certain suction effect. The superposition of these two suction forces can draw water upwards from the bottom of fluidizing cylinder 5. When the water at the bottom of fluidizing cylinder 5 is emptied, the water in the bottom space of settling zone 8 will flow towards the bottom of fluidizing cylinder 5 to make up for it. This creates a sewage circulation channel between fluidizing zone 9 and settling zone 8 (see reference). Figure 4 This allows a portion of the wastewater to be repeatedly circulated into the fluidizing cylinder 5 through the circulation channel. During this repeated circulation, the number of times the wastewater comes into contact with the softening agent is effectively increased, and the contact reaction time with the softening agent is extended, which helps to fully soften the wastewater.

[0063] In addition, when the wastewater circulates into the fluidizing cylinder 5, some of the lighter seed crystals that have settled at the bottom of the tank 1 can be drawn back into the fluidizing cylinder 5 and added to the wastewater flow path for repeated use. Compared with the existing technology, the utilization rate of seed crystals is higher and more efficient, which helps to reduce the amount of seed crystals added, reduce the consumption of seed crystals, and improve the economic benefits of enterprises.

[0064] A ring-shaped settling zone 8 is formed between the fluidizing cylinder 5 and the tank 1, and a fluidizing zone 9 is formed inside the fluidizing cylinder 5. A portion of the wastewater settles in the bottom space of the tank 1 after the seed crystals have grown larger. The bottom nozzles of a ring of water spray pipes 601 spray the settled seed crystals, which can lift the seed crystals settled at the bottom of the tank 1. This is beneficial for the lighter seed crystals to be drawn into the fluidizing cylinder 5, avoiding the seed crystals from settling and accumulating together and being unable or difficult to be drawn into the fluidizing cylinder 5 for reuse. This is beneficial for ensuring the normal implementation of the seed crystal reuse function. Moreover, the seed crystal lifting operation is carried out by the impact force of the wastewater spray, without the need for additional lifting mechanism and lifting power.

[0065] When the blades 502 are sprayed and rotated, they can drive the baffle ring 504 to rotate. The baffle ring 504 covers the bottom nozzle of the spray pipe 601. When it rotates, the water channel 505 on it can overlap with the bottom nozzle of the ring in sequence, controlling the bottom nozzle of the ring to open in sequence. It intermittently sprays and lifts the settled crystals at the bottom of the tank 1. First, the ring spray can lift the crystals distributed around the bottom of the tank 1. Second, controlling the bottom nozzle to open intermittently in sequence can reduce the downward spray water volume compared to all of them being open at all times. This reduces the consumption of spray pressure in the water distribution ring groove 6, allowing the spray pipe 601 to have sufficient pressure to drive the blades 502 and the baffle ring 504 to rotate and generate swirling flow. This helps to ensure the normal implementation of the intermittent spray lifting function. In addition, reducing the downward jet of water can reduce the disturbance when the sewage circulates into the fluidizing cylinder 5.

[0066] Furthermore,

[0067] The bottom part of the tank body 1 has a conical guide structure, and a discharge pipe 104 is welded to the conical part of the bottom side of the tank body 1. The top of the tank body 1 is welded with a gradually expanding cover 101 and a clean water cylinder 102 in sequence. A clean water outlet pipe 105 is welded to the outer circumference of the clean water cylinder 102. A filter screen is provided at the water inlet end of the clean water outlet pipe 105.

[0068] The clean water outlet pipe 105 is connected to the fixed hydrochloric acid mixing cylinder 103, and the external alkaline solution supply system is connected to the hydrochloric acid mixing cylinder 103.

[0069] A separation zone 10 is formed in the expanding cover 101, and a clear water zone 11 is formed in the clear water cylinder 102.

[0070] Furthermore,

[0071] A hollow water guide cone 107 is welded and hoisted at the center of the bottom of the top plate of tank 1. The circumferential conical surface of the water guide cone 107 is concave and bent towards the central axis. The inclined guiding principle of the water guide cone 107 and the bottom conical structure of tank 1 is conducive to the formation of circulating water flow of sewage.

[0072] Furthermore,

[0073] The dosing pipe 2 is arranged vertically, and a ring of spray holes is opened around the outer circumference of the dosing pipe 2. The top of the dosing pipe 2 is welded with a chemical inlet pipe 201. The chemical inlet pipe 201 slides through and is fixed to the center of the top plate of the tank 1 by screws. The chemical inlet pipe 201 is connected to an external softening chemical dosing system for adding softening chemical to the fluidizing cylinder 5. The softening chemical is a mixture of quicklime and sodium hydroxide in a 3:1 ratio, and the dosage is 300mg / L. Compared with simply adding sodium hydroxide, using a mixture of quicklime and sodium hydroxide can not only reduce the conductivity of the effluent, but also save chemical costs.

[0074] Furthermore,

[0075] The seed tube 4 has a T-shaped structure, and a row of short nozzles 401 are welded at equal intervals on the vertical section of the seed tube 4. The row of short nozzles 401 is welded through to the circumferential sidewall of the fluidizing cylinder 5.

[0076] Furthermore,

[0077] A water distribution zone 7 is formed in the bottom space of the fluidizing cylinder 5 near a ring of water spray pipes 601;

[0078] A rotating ring 501 is rotatably installed on the inner circumference of the bottom space of the fluidizing cylinder 5. A ring of blades 502 is welded around the rotating ring 501. Two vertical transmission rods 503 are symmetrically welded between the two blades 502 and the water baffle ring 504. The two vertical transmission rods 503 are rotatably located in the annular space between the water distribution ring groove 6 and the inner wall of the fluidizing cylinder 5.

[0079] Furthermore,

[0080] The sewage inlet component is the inlet annular groove 3, and a sewage inlet pipe is welded to the outer circumference of the inlet annular groove 3.

[0081] The treatment process of this equipment is as follows: After the wastewater is adjusted to a strongly alkaline pH using NaOH solution, it enters the water distribution ring trough 6 through the inlet ring trough 3 and two vertically supported wastewater pipes 106, and is sprayed out through a ring of spray pipes 601. The nozzles at the top of the spray pipes 601 spray towards a ring of blades 502. Since the outlet nozzles at the top of the spray pipes 601 are located tangentially to the inner wall of the fluidizing cylinder 5, they drive the blades 502 to rotate, forming an upward swirling flow inside the fluidizing cylinder 5. The rotating and turbulent wastewater is fully mixed and reacted with the softening agent sprayed from the dosing pipe 2. The upward swirling flow disperses the added seed crystals and mixes them relatively evenly in the wastewater. Then, the upward swirling flow pushes the seed crystals upward. During the upward pushing of the seed crystals, the Ca in the wastewater... 2+The crystals begin to react chemically with the added reagents, gradually forming CaCO3 crystals that adhere to the surface of the added seed crystals. As the number of crystals adhering to the seed crystal surface increases, the particles gradually grow larger, eventually forming mature crystal particles with a diameter of 4-5 mm. After the seed crystals are conveyed out of the fluidizing cylinder 5, they sequentially enter the separation zone 10 and the clear water zone 11. In the separation zone 10, a portion of the larger and heavier seed crystals are directly centrifuged and thrown to the periphery of the separation zone 10 and settle downwards along the settling zone 8. A portion of the lighter seed crystals... The crystals continue to rise and attach and grow more CaCO3 crystals as they remain suspended in the vortex. As the volume and weight of these lighter crystals gradually increase, the centrifugal force they experience also increases. Eventually, they will be centrifugally thrown out of the vortex and will also settle downwards along the settling zone 8. During this process, the wastewater is separated from the crystals in the lower part of the separation zone 10 and the clear water zone 11. The clear water rises and is discharged through the clear water outlet pipe 105. The clear water is discharged after pH adjustment by the hydrochloric acid solution added in the hydrochloric acid mixing cylinder 103, thus completing the wastewater treatment.

[0082] Because the flow velocity in fluidizing cylinder 5 is relatively high, its internal pressure is low according to Bernoulli's principle, which will create a suction effect on the sewage at its bottom opening. The swirling flow inside fluidizing cylinder 5 will also produce a certain suction effect. The superposition of these two suction forces can draw water upwards from the bottom of fluidizing cylinder 5. When the water at the bottom of fluidizing cylinder 5 is emptied, the water in the bottom space of settling zone 8 will flow towards the bottom of fluidizing cylinder 5 to make up for it. This creates a sewage circulation channel between fluidizing zone 9 and settling zone 8 (see reference). Figure 4 This allows a portion of the wastewater to be repeatedly circulated into the fluidizing cylinder 5 through the circulation channel. During this repeated circulation, the wastewater has increased the number of times it comes into contact with the softening agent and extended the reaction time with the softening agent, thus ensuring that the wastewater is fully softened. In addition, when the wastewater circulates into the fluidizing cylinder 5, it can draw in some of the lighter seed crystals that have settled at the bottom of the tank 1 and reintroduce them into the fluidizing cylinder 5, adding them to the wastewater flow path for repeated use.

[0083] When the blades 502 are sprayed and rotated, they can drive the baffle ring 504 to rotate. The baffle ring 504 covers the bottom nozzle of the water spray pipe 601. When it rotates, the water channel 505 on it can overlap with the bottom nozzle of the ring in sequence, controlling the bottom nozzle of the ring to open in sequence, intermittently spraying and lifting the settled crystal seeds at the bottom of the tank 1, making it easier for the lighter crystal seeds to be sucked into the fluidizing cylinder 5.

[0084] The settled seed crystals need to be discharged periodically through the discharge pipe 104, and the discharge pipe 104 can also be connected to the seed crystal recovery and drying system for repeated recycling.

[0085] The following points should be noted in this article:

[0086] 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0087] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0088] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A chemical crystallization granular fluidized bed water treatment device, comprising: Tank (1), dosing pipe (2), sewage inlet component and seeding pipe (4); the dosing pipe (2) is suspended at the center of the inside of the tank (1), and the sewage inlet component is suspended at the bottom of the tank (1), and the seeding pipe (4) is welded through the outer circumference of the tank (1); The feature is that a vertically arranged fluidizing cylinder (5) is welded to the center of the inside of the tank (1), the fluidizing cylinder (5) is sleeved with the dosing pipe (2), and the water outlet of the seeding pipe (4) is connected to the inside of the fluidizing cylinder (5); two vertically supporting sewage pipes (106) are symmetrically welded through the bottom plate of the tank (1), the top of the two vertically supporting sewage pipes (106) is welded with a water distribution groove (6), and the bottom of the two vertically supporting sewage pipes (106) is welded and fixed together with the sewage inlet component; A ring of water spray pipes (601) is welded through the water distribution groove (6). The upper half of the water spray pipe (601) is inclined, and the water outlet at the top of the water spray pipe (601) is located in the tangential direction of the inner wall of the fluidizing cylinder (5). The lower half of the water spray pipe (601) is vertically supported. The fluidizing cylinder (5) has a ring of rotating blades (502) installed in the space at the bottom. A horizontally arranged water baffle plate (504) is suspended at the bottom of the ring of blades (502). The water baffle plate (504) rotates and fits with the bottom nozzle of a ring of water spray pipes (601). A water passage groove (505) is opened through the water baffle plate (504). The top nozzle of the ring-shaped water spray pipe (601) sprays towards the ring-shaped blades (502) and forms an upward swirling flow inside the fluidizing cylinder (5). A ring-shaped settling zone (8) is formed between the fluidizing cylinder (5) and the tank (1), and a fluidizing zone (9) is formed inside the fluidizing cylinder (5). A portion of the wastewater forms a circulation channel between the fluidizing zone (9) and the settling zone (8). The grown seed crystal settles in the bottom space of the tank (1), and the bottom nozzle of the ring-shaped water spray pipe (601) sprays towards the settled seed crystal.

2. The chemical crystallization particle fluidized bed water treatment equipment according to claim 1, characterized in that, The bottom part of the tank (1) has a conical guide structure, and a discharge pipe (104) is welded to the bottom conical part of the tank (1). A gradually expanding cover (101) and a clean water cylinder (102) are welded to the top of the tank (1) in sequence. A clean water outlet pipe (105) is welded to the outer circumference of the clean water cylinder (102). A clean water outlet pipe (105) is connected to a fixed hydrochloric acid mixing cylinder (103), and an external alkali supply system is connected to the hydrochloric acid mixing cylinder (103). A separation zone (10) is formed in the expanding hood (101), and a clear water zone (11) is formed in the clear water cylinder (102).

3. The chemical crystallization granular fluidized bed water treatment equipment according to claim 1, characterized in that, A hollow water guide cone (107) is welded and hoisted at the bottom center of the top plate of the tank (1), and the circumferential conical surface of the water guide cone (107) is bent inward toward the central axis.

4. The chemical crystallization granular fluidized bed water treatment equipment according to claim 3, characterized in that, The dosing pipe (2) is arranged vertically, and a ring of spray holes is opened around the outer circumference of the dosing pipe (2). The top of the dosing pipe (2) is welded with a drug inlet pipe (201). The drug inlet pipe (201) slides through the top plate of the tank (1) and the water guide cone (107) and is fixed to the center position of the top plate of the tank (1) by screws.

5. The chemical crystallization particle fluidized bed water treatment equipment according to claim 1, characterized in that, The seed tube (4) has a T-shaped structure, and a row of short nozzles (401) are welded at equal intervals on the vertical section of the seed tube (4). The row of short nozzles (401) is welded through to the circumferential sidewall of the fluidizing cylinder (5).

6. The chemical crystallization granular fluidized bed water treatment equipment according to claim 1, characterized in that, A water distribution area (7) is formed in the bottom space of the fluidizing cylinder (5) near a ring of water spray pipes (601).

7. The chemical crystallization particle fluidized bed water treatment equipment according to claim 6, characterized in that, A rotating ring (501) is rotatably installed on the inner circumference of the bottom space of the fluidizing cylinder (5). A ring of blades (502) is welded around the rotating ring (501). Two vertical transmission rods (503) are symmetrically welded between the blades (502) and the water baffle plate (504). The two vertical transmission rods (503) are rotatably located in the annular space between the water distribution ring groove (6) and the inner wall of the fluidizing cylinder (5).

8. The chemical crystallization granular fluidized bed water treatment equipment according to claim 1, characterized in that, The sewage inlet component is an inlet annular groove (3), and a sewage inlet pipe is welded to the outer circumference of the inlet annular groove (3).

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