Nuclear crystal granulation device

Abstract

The utility model discloses a nucleation granulation device which comprises an annular water distribution pipe arranged below a tank body, a sludge pipe is arranged on the tank body at the bottom of the annular water distribution pipe, and a granulation reaction area, a concentration area, a separation area, an inclined plate clarification area and an overflow groove are sequentially distributed above the annular water distribution pipe from bottom to top. A filling device is arranged at the separation area; a water outlet is formed in the overflow groove; a hollow barrel is arranged at the central position of the granulation reaction area, an axial flow pump is arranged in the hollow barrel, the axial flow pump is used for pumping part of water in the concentration area into the central hollow barrel and conveying the water to the center of the annular water distribution pipe, and the hollow barrel is located over the annular water distribution pipe. According to the utility model, the operation load can be improved, the treatment depth can be increased, the operation load and the sludge concentration effect can be effectively improved, and the discharged sludge can be directly dewatered, namely, the effluent quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial sewage treatment, in particular to a nuclear crystal granulation device. Background Art

[0002] Traditional sedimentation tanks have limited ability to remove pollutants such as chemical oxygen demand (COD) and activated sludge concentration (SS) in sewage, and only have a single sedimentation and clarification function. A flocculation reaction tank needs to be built in front of the tank, which increases the floor space and construction cost of the water treatment system.

[0003] Ordinary sedimentation tanks use gravity sedimentation to make the suspended matter settle to the bottom of the tank, thereby achieving solid-liquid separation.

[0004] Ordinary sedimentation tanks are suitable for treating general suspended matter, such as silt, turbidity, etc.

[0005] However, the common devices have the following defects:

[0006] 1. Large land area. Since ordinary sedimentation tanks are arranged horizontally and have a long sedimentation distance, they require a large area of ​​land.

[0007] 2. Low treatment efficiency. Because the water flow in the sedimentation tank is too fast, the suspended matter is not completely precipitated, resulting in low treatment efficiency.

[0008] 3. Easy to clog. The suspended matter in the sedimentation tank is not completely settled, which is easy to clog the pipes and equipment. The sludge concentration effect is poor. Utility Model Content

[0009] In order to overcome the defects of the above-mentioned prior art, the purpose of the utility model is to provide a nuclear crystal granulation device, which can increase the operating load, increase the processing depth, effectively improve the operating load and sludge concentration effect, and the discharged sludge can be directly dehydrated, thereby improving the effluent water quality.

[0010] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0011] A nuclear crystal granulation device, comprising an annular water distribution pipe arranged below a tank body, the annular water distribution pipe mixes incoming water and incoming medicine, a sewage discharge device is installed on the tank body at the bottom of the annular water distribution pipe, and a granulation reaction zone, a concentration zone, a separation zone, a clarification zone and a water outlet zone are distributed above the annular water distribution pipe in order from bottom to top;

[0012] A packing device is provided at the separation zone;

[0013] A hollow barrel without a top and a bottom is arranged at the center of the granulation reaction zone, and an axial flow pump is arranged inside the hollow barrel. The axial flow pump is used to pump part of the water in the concentration zone into the center hollow barrel and transport it to the center of the annular water distribution pipe. The hollow barrel is located directly above the annular water distribution pipe.

[0014] A water flow disperser is arranged at the bottom of the annular water distribution pipe, and the water flow disperser is used to evenly disperse the water flow of the water distribution pipe, so that the water flow becomes a turbulent state, so that the substances inside the liquid are evenly mixed.

[0015] The annular water distribution pipe allows the medicine to fully react with impurities in the sewage. The annular water distribution pipe is divided into annular water distribution pipe one, annular water distribution pipe two, and annular water distribution pipe three from bottom to top. Among them, any two annular water distribution pipes are used to feed medicine, and the other annular water distribution pipe is used to feed water. A number of small holes are opened on the inner side of the surface of the annular water distribution pipe, and the diameter of the annular water distribution pipe is larger than the central hollow barrel.

[0016] Several small holes on the surface of the annular water distribution pipe are opened upward and face the center of the annular water distribution pipe, wherein the small holes on annular water distribution pipe one are set upward, the small holes on annular water distribution pipe three are set downward, and the small holes on annular water distribution pipe two are set horizontally. The substances sprayed by the three annular water distribution pipes are mixed at the center of annular water distribution pipe two.

[0017] The granulation reaction zone is an area formed by the water flow returning from the concentration zone through the hollow barrel and the outer wall of the tank body. The concentration zone is used to concentrate the sludge after the granulation reaction zone, and the separation zone is used to separate the concentrated sludge from water.

[0018] The hollow barrel is fixed by steel bars, and the steel bars are arranged on the inner wall of the tank body.

[0019] The sewage discharge device is a sludge pipe.

[0020] The clarification zone includes inclined plates arranged in sequence at equal intervals to form an inclined plate clarification zone.

[0021] The water outlet area includes an overflow trough arranged above the clarification area, and the overflow trough is provided with a drain port, and the drain port is located on the side wall of the tank body.

[0022] The concentration area includes a concentration tank, which is a conical concentration tank;

[0023] The water flow disperser includes a bottom bearing and an umbrella-shaped structure located at the upper end of the bearing. The umbrella-shaped structure can be driven to rotate by a motor at the bottom thereof. A plurality of triangular pointed structure protrusions are arranged on the surface of the umbrella-shaped structure. The triangular pointed structure protrusions are arranged around the surface of the umbrella-shaped structure.

[0024] The water flow disperser has 2 holes per square centimeter with a height of 0.5 cm.

[0025] The umbrella-shaped structure forms an angle of 20-65 degrees with the horizontal plane, the triangular pointed structure protrusion is inclined toward the vertical bearing position, and the angle between the triangular pointed structure protrusion and the vertical bearing is 45-60 degrees.

[0026] The packing device comprises a packing frame, the packing frame is composed of individual laminar flow small units, the individual laminar flow small units are arranged in left and right layers, and each layer is arranged with a plurality of individual laminar flow small units;

[0027] The individual laminar flow cells are square / rectangular tubes, specifically quadrilateral tubes, with specifications of 40*40cm, 80*80cm, and a rectangular range of 40 to 80cm, and a length and width combination;

[0028] The square / rectangular tube is tilted, and the tilt angle is 75° to 55°;

[0029] The inclined square / rectangular tubes are arranged with one layer inclined to the left and one layer inclined to the right, and are arranged at intervals;

[0030] The two sides of the obliquely arranged square / rectangular tube are provided with inwardly and outwardly inclined square / rectangular tubes;

[0031] The inclination angle of the square / rectangular tube is 75° to 55°.

[0032] Beneficial effects of the utility model:

[0033] 1. The device has a reasonable structure. Its overall structure and size can directly replace the corresponding devices of the original sewage plant and be put into use directly. It occupies a small area, has low cost and is easy to operate.

[0034] 2. The process flow of this device is simple: This device takes in water and drugs at the same time, and does not require other auxiliary coagulation and sedimentation processes, making the overall process flow simpler.

[0035] 3. The utility model effectively improves the operation load and sludge concentration effect, improves the operation load and greatly improves the sludge concentration effect, and the discharged sludge can be directly dehydrated, that is, improves the effluent water quality.

[0036] 4. The packing device effectively improves the operation load and sludge concentration effect. The operation load is increased and the sludge concentration effect is greatly improved. The discharged sludge can be directly dehydrated. That is, the effluent water quality is improved. Its structure is reasonable, and the overall structure and size can directly replace the original inclined plate position and be put into use directly.

[0037] 5. The purpose of using square tubes in the packing device is to form a separate laminar flow unit and increase the water flow area of ​​the inclined plate, so as to improve the efficiency of removing suspended matter. The packing is arranged in layers on the left and right, so that the water discharge from the top is uniform and stable in a small range. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the utility model.

[0039] Figure 2 It is a side view of the utility model.

[0040] Figure 3 It is the front view of the filling device of the utility model.

[0041] Figure 4 It is a side view of the filling device of the utility model.

[0042] Figure 5 It is a top view of the filling device of the utility model.

[0043] Figure 6 It is a structural schematic diagram of the water flow disperser of the utility model.

[0044] Figure 7 It is a top view of the water flow disperser of the utility model.

[0045] Description of Figure Numbers:

[0046] 1. Annular water distribution pipe 1, 2. Annular water distribution pipe 2, 3. Annular water distribution pipe 3, 4. Sludge pipe, 5. Granulation reaction zone, 6. Axial flow pump, 7. Hollow barrel, 8. Steel bars, 9. Concentration zone, 10. Separation zone, 11. Inclined plate clarification zone, 12. Overflow trough, 13. Drain, 14. Filling device, 15. Water flow disperser. DETAILED DESCRIPTION

[0047] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0048] like Figure 1 , Figure 2 As shown: a nuclear crystal granulation device, including an annular water distribution pipe arranged below the tank body, a sludge pipe 4 is installed on the tank body at the bottom of the annular water distribution pipe, and a granulation reaction zone 5, a concentration zone 9, a separation zone 10, an inclined plate clarification zone 11 and an overflow trough 12 are distributed above the annular water distribution pipe from bottom to top, and a drain port 13 is arranged on the overflow trough 12;

[0049] A hollow barrel 7 is arranged at the center of the granulation reaction zone 5, and an axial flow pump 6 is arranged inside the hollow barrel 7. The axial flow pump 6 is used to pump part of the water in the concentration zone 9 into the center hollow barrel 7 and transport it to the center of the annular water distribution pipe. The hollow barrel 7 is located directly above the annular water distribution pipe.

[0050] The annular water distribution pipe allows the reagent to fully react with impurities in the sewage. The annular water distribution pipe is divided into annular water distribution pipe 1, annular water distribution pipe 2, and annular water distribution pipe 3 3 from bottom to top. The diameter of the annular water distribution pipe is larger than the central hollow barrel 7.

[0051] The granulation reaction zone 5 is a region formed by the water flow back from the concentration zone 9 through the hollow barrel 7 and the outer wall of the tank body. The concentration zone 9 is used to concentrate the sludge after the granulation reaction zone 5, and the separation zone 10 is used to separate the concentrated sludge from water.

[0052] The hollow barrel 7 is fixed by steel bars 8, and the steel bars 8 are arranged on the inner wall of the tank.

[0053] The diameter of the circle surrounded by the annular water distribution pipe is larger than the central hollow barrel 7. The annular water distribution pipes 1, 2, and 3 release water and gas. The gas disturbs the water and forms a turbulent flow to carry the water to the granulation reaction zone 5 and mixes therein. The sludge in the concentration zone 9 settles freely inside the concentration tank under the action of its own gravity. The sludge settled to the bottom of the concentration tank is squeezed between the upper and lower parts, so that it is further dehydrated, and finally a sludge layer with a higher concentration is obtained at the bottom of the conical concentration tank. The small particle sludge separated by the filler device 14 in the separation zone 10 settles. In the inclined plate clarification zone 11, when the sewage passes through the inclined plate clarification zone, the setting of the inclined plate makes the water flow layer flow slowly, and the suspended matter and particulate matter begin to settle due to gravity. At the same time, the water flow is blocked by the inclined plate, so that the sludge slides down along the surface of the inclined plate. Through the setting of the inclined plate, the sedimentation area of ​​the clarification zone is expanded, the clarification effect is improved and space is saved.

[0054] The device forms larger particles by adding chemical agents, gathers suspended matter on the surface of the particles, and then settles them by gravity sedimentation.

[0055] Compared with ordinary sedimentation tanks, this device has better effects in treating suspended matter. This device can form larger particles, improve the sedimentation speed and efficiency of suspended matter, and thus achieve better solid-liquid separation effect. Through the flow state control of this device, the pre-added crystal seeds form a crystal seed suspension layer in a fluidized state, and the addition of chemical agents improves the cohesion of pollutants, inducing pollutants and crystals to form copolymers in a one-by-one attachment and cohesion mode, completing floc granulation and densification, thereby achieving efficient solid-liquid separation of pollutants.

[0056] This device is more suitable for treating fine, difficult-to-sediment suspended matter, such as colloidal particles, organic matter, etc.

[0057] like Figure 3-Figure 5 As shown, the packing device 14 includes a packing frame, which is composed of independent laminar flow small units. The independent laminar flow small units are arranged in left and right layers, and each layer is arranged with a plurality of independent laminar flow small units.

[0058] The separate laminar flow small unit is a square / rectangular tube. The purpose of using the square tube is to form a separate laminar flow small unit and increase the water flow area of ​​the inclined plate, thereby achieving the purpose of improving the efficiency of removing suspended matter.

[0059] The individual laminar flow small units are arranged in left and right layers, and the purpose of this is to make the water flow from the top uniform and stable within a small range.

[0060] The square / rectangular tube is inclined, and since the optimal inclination angle of the inclined plate for sedimentation is 75° to 55°, the inclination angle is set to 75° to 55°, so as to improve the sedimentation efficiency.

[0061] The individual laminar flow small unit is a square / rectangular tube, most easily a square tube, with specifications of 40*40cm, 80*80cm, and generally a rectangular range of 40 to 80cm, in combination of length and width.

[0062] The purpose of left and right layering is to make the water output uniform over a large area, to place the most fillers, and to increase sedimentation efficiency.

[0063] The packing device is arranged in the upper part of the core granulating device, 0.4m to 0.6m from the top, to ensure that the precipitate flows out in a uniform flow state after being completely precipitated.

[0064] The square tube filler is made of PVC, FRP, and PPR materials, and the materials can be adjusted according to different water qualities.

[0065] like Figure 6 , Figure 7 As shown, the water flow disperser 15 includes a bottom bearing and an umbrella-shaped structure located at the upper end of the bearing. The umbrella-shaped structure can be rotated by a motor at its bottom. A plurality of triangular pointed structure protrusions are arranged on the surface of the umbrella-shaped structure. The triangular pointed structure protrusions are arranged around the surface of the umbrella-shaped structure. The triangular pointed structure protrusions can evenly disperse the water flow, making the water flow into a turbulent state, so that the substances inside the liquid are evenly mixed, thereby achieving more efficient solid-liquid separation of pollutants.

[0066] The water flow disperser 15 has a height of 0.5 cm per square centimeter. The water flow disperser 15 disperses the water flow evenly, making the water flow turbulent, so that the substances inside the liquid are mixed evenly, thereby achieving more efficient solid-liquid separation of pollutants.

[0067] The umbrella-shaped structure is at an angle of 20-65 degrees to the horizontal plane, the triangular pointed structure protrusion is inclined toward the vertical bearing position, and the triangular pointed structure protrusion is at an angle of 45-60 degrees to the vertical bearing. The triangular pointed structure protrusion can evenly disperse the water flow, making the water flow turbulent, so that the substances inside the liquid are evenly mixed, thereby achieving more efficient solid-liquid separation of pollutants.

[0068] The working principle of this utility model:

[0069] The incoming water enters through the annular water distribution pipe 1 and the annular water distribution pipe 3 3, and the mixed reagent enters through the annular water distribution pipe 2 2. The diameter of the annular water distribution pipe is larger than the central hollow barrel 7. The water flow returning from the concentration area 9 flows upward through the area formed by the hollow barrel 7 and the outer wall of the overall device, namely the granulation reaction area 5. After reaching the concentration area 9, part of the water is pumped by the axial flow pump 6 to the inside of the central hollow barrel 7 until it reaches the annular center of the annular water distribution pipe 1, the annular water distribution pipe 2, and the annular water distribution pipe 3 3. The water flow is evenly dispersed by the water flow disperser 15 to make the water flow turbulent so that the internal substances of the liquid are evenly mixed. After passing through the granulation reaction area 5, it flows through the concentration area 9 for sludge concentration, and then the sludge is separated from the water through the filler device 14 in the separation area 10. It reaches the inclined plate clarification area 11 to precipitate smaller particles of sludge, and finally the clean water flows out through the overflow trough 12, and then is discharged from the device through the drain port 13. The sludge precipitated in the device is discharged from the sludge pipe 4. (Wherein the hollow barrel 7 is fixed by steel bars 8 and fixed at the center of the device).

[0070] The functions of the annular water distribution pipe 1, annular water distribution pipe 2, and annular water distribution pipe 3 are to evenly distribute water so that the reagent and impurities in the sewage can fully react. The function of the hollow barrel 7 is to separate two areas with different flow rates for the nuclear crystal granulation process and make the water flow form a cycle in the device.

[0071] After the raw water enters from the bottom of the device, the pre-added seeds are suspended in the tank in a fluidized state through the annular water distribution pipe 2. Then the incoming water and the added alkaline chemical agent are fully mixed in the granulation reaction zone 5, the concentration zone 9 and the inner area of ​​the hollow barrel 7, so that the ions in the water are attached to the surface of the seeds in a heterogeneous crystallization manner to form ion crystals. As the water flow rises, the ion crystals serve as the center of the crystal nucleus, and the ions in the water continue to gather outside the crystal nucleus and form a densified granulation body. The density of the granulation body has undergone a process from low to high. The granulation body with a smaller density re-enters the central hollow barrel 7 with the water flow in the separation zone 10, and is fully mixed in the granulation reaction zone 5 until a granulation body with a large density is formed. The granulation body deposited at the bottom is regularly removed. The above reaction process is repeated, and most of the ions in the water form granulations with the crystal nucleus, realizing the efficient removal of hardness and impurities in the water.

Claims

1. A nucleus crystal granulation device, characterized in that: The invention comprises an annular water distribution pipe arranged below the tank body, the annular water distribution pipe mixes the incoming water and the incoming medicine, a sewage discharge device is installed on the tank body at the bottom of the annular water distribution pipe, and a granulation reaction zone (5), a concentration zone (9), a separation zone (10), a clarification zone and a water outlet zone are arranged in sequence from bottom to top above the annular water distribution pipe; The separation zone (10) is provided with a packing device (14); A hollow barrel (7) without a top and a bottom is arranged at the center of the granulation reaction zone (5), an axial flow pump (6) is arranged inside the hollow barrel (7), and the axial flow pump (6) is used to pump part of the water in the concentration zone (9) into the center hollow barrel (7) and transport it to the center of the annular water distribution pipe. The hollow barrel (7) is located directly above the annular water distribution pipe; A water flow disperser (15) is arranged at the bottom of the annular water distribution pipe, and the water flow disperser (15) is used to evenly disperse the water flow generated by the annular water distribution pipe, so that the water flow is in a turbulent state, so that the substances inside the liquid are evenly mixed.

2. A nuclear crystal granulation device according to claim 1, characterized in that: The annular water distribution pipe allows the medicine to fully react with impurities in the sewage. The annular water distribution pipe is divided into annular water distribution pipe one (1), annular water distribution pipe two (2), and annular water distribution pipe three (3) from bottom to top. Any two of the annular water distribution pipes are used to feed medicine, and the other annular water distribution pipe is used to feed water. A plurality of small holes are opened on the inner side of the surface of the annular water distribution pipe, and the diameter of the annular water distribution pipe is larger than the central hollow barrel (7).

3. A nuclear crystal granulation device according to claim 2, characterized in that: The plurality of small holes on the surface of the annular water distribution pipe are upwardly opened and face the center of the annular water distribution pipe, wherein the small holes on the annular water distribution pipe one (1) are arranged upwardly, the small holes on the annular water distribution pipe three (3) are arranged downwardly, and the small holes on the annular water distribution pipe two (2) are arranged horizontally, and the substances sprayed by the three annular water distribution pipes are mixed at the center of the annular water distribution pipe two (2).

4. A nuclear crystal granulation device according to claim 1, characterized in that: The granulation reaction zone (5) is a zone formed by the water flow returning from the concentration zone (9) through the hollow barrel (7) and the outer wall of the tank body. The concentration zone (9) is used to concentrate the sludge after the granulation reaction zone (5), and the separation zone (10) is used to separate the concentrated sludge from water.

5. A nuclear crystal granulation device according to claim 1, characterized in that: The hollow barrel (7) is fixed by a steel bar (8), and the steel bar (8) is arranged on the inner wall of the tank body.

6. A nuclear crystal granulation device according to claim 1, characterized in that: The sewage discharge device is a sludge pipe (4).

7. A nuclear crystal granulation device according to claim 1, characterized in that: The clarification zone comprises inclined plates arranged in sequence at equal intervals, forming an inclined plate clarification zone (11).

8. A nuclear crystal granulation device according to claim 1, characterized in that: The water outlet area comprises an overflow trough (12) arranged above the clarification area, and a drainage port (13) is arranged on the overflow trough (12), and the drainage port (13) is located on the side wall of the tank body.

9. A nuclear crystal granulation device according to claim 1, characterized in that: The concentration zone (9) comprises a concentration tank, which is a conical concentration tank; The water flow disperser (15) comprises a bottom bearing and an umbrella-shaped structure located at the upper end of the bearing, the umbrella-shaped structure can be driven to rotate by a motor at the bottom thereof, a plurality of triangular pointed structure protrusions are arranged on the surface of the umbrella-shaped structure, and the triangular pointed structure protrusions are arranged around the surface of the umbrella-shaped structure; The water flow disperser (15) has 2 per square centimeter and a height of 0.5 cm; The umbrella-shaped structure forms an angle of 20-65 degrees with the horizontal plane, the triangular pointed structure protrusion is inclined toward the vertical bearing position, and the angle between the triangular pointed structure protrusion and the vertical bearing is 45-60 degrees.

10. A nucleus crystal granulation device according to claim 1, characterized in that: The packing device (14) comprises a packing frame, the packing frame is composed of independent laminar flow small units, the independent laminar flow small units are arranged in left and right layers, and each layer is arranged with a plurality of independent laminar flow small units; The individual laminar flow cells are square / rectangular tubes; The square / rectangular tube is tilted, and the tilt angle is 75° to 55°; The inclined square / rectangular tubes are arranged with one layer inclined to the left and one layer inclined to the right, and are arranged at intervals; The two sides of the obliquely arranged square / rectangular tube are provided with inwardly and outwardly inclined square / rectangular tubes; The inclination angle of the square / rectangular tube is 75° to 55°.

Images