CN119873988A - Solid-liquid separation circulating granulation fluidized bed - Google Patents
Solid-liquid separation circulating granulation fluidized bed Download PDFInfo
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- CN119873988A CN119873988A CN202510037106.7A CN202510037106A CN119873988A CN 119873988 A CN119873988 A CN 119873988A CN 202510037106 A CN202510037106 A CN 202510037106A CN 119873988 A CN119873988 A CN 119873988A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
本发明的实施例提出一种固液分离循环造粒流化床。其中，所所述固液分离循环造粒流化床中的所述外层筒体、所述中层筒体和所述内层筒体沿由外至内的方向依次设置，所述中层筒体具有朝下的开口，且所述中层筒体倒扣在所述外层筒体内，所述内层筒体内形成内流道，所述中层筒体和所述内层筒体之间形成中流道，所述外层筒体和所述中层筒体之间形成外流道，所述内流道、所述中流道及所述外流道在液体的流动方向上交替布置，其中所述内流道内形成所述凝絮反应腔；所述搅拌器穿于所述中层筒体和所述内层筒体上，且所述搅拌器的桨叶位于所述内层筒体内。因此，根据本发明的实施例的固液分离循环造粒流化床具有降低设备尺寸及外排水的浑浊度的优点。
An embodiment of the present invention proposes a solid-liquid separation circulating granulation fluidized bed. Among them, the outer cylinder, the middle cylinder and the inner cylinder in the solid-liquid separation circulating granulation fluidized bed are arranged in sequence from the outside to the inside, the middle cylinder has a downward opening, and the middle cylinder is inverted in the outer cylinder, an inner flow channel is formed in the inner cylinder, a middle flow channel is formed between the middle cylinder and the inner cylinder, and an outer flow channel is formed between the outer cylinder and the middle cylinder. The inner flow channel, the middle flow channel and the outer flow channel are arranged alternately in the flow direction of the liquid, wherein the flocculation reaction chamber is formed in the inner flow channel; the agitator passes through the middle cylinder and the inner cylinder, and the paddles of the agitator are located in the inner cylinder. Therefore, the solid-liquid separation circulating granulation fluidized bed according to the embodiment of the present invention has the advantages of reducing the equipment size and the turbidity of the external drainage.
Description
Technical Field
The invention relates to the technical field of environmental protection equipment, in particular to a solid-liquid separation circulating granulation fluidized bed.
Background
In the related art, the crystallization fluidized bed device comprises an outer cylinder and a stirring device, and chemical agents are added into the outer cylinder, so that the surface of the seed crystal continuously gathers, the fluidization balance can be broken after the crystal grows to a certain size, the crystals are automatically deposited at the bottom of a bed layer, finally, the crystals enter a plate-and-frame filter press system to carry out a mud-water separation process, and finally, mud cakes are formed. However, the size of the large-diameter outer cylinder is limited, so that the overall flow rate in the crystallization fluidized bed is limited on the premise of ensuring the sedimentation effect of the tiny particles (ensuring the upper limit of turbidity of overflow water), and exceeding the upper limit of flow rate can lead to a large amount of tiny particles not being effectively sedimented in the large-diameter sedimentation device and being discharged with the overflow water, so that the turbidity of the discharged water is increased.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, embodiments of the present invention provide a solid-liquid separation circulating granulation fluid bed. The solid-liquid separation circulating granulation fluidized bed has the advantages of reducing the equipment size and the turbidity of external drainage.
The solid-liquid separation circulating granulation fluidized bed comprises an outer layer cylinder, a middle layer cylinder, an inner layer cylinder and a stirrer.
The device comprises an outer layer cylinder, a middle layer cylinder and an inner layer cylinder, wherein the outer layer cylinder, the middle layer cylinder and the inner layer cylinder are sequentially arranged along the direction from outside to inside, the middle layer cylinder is provided with a downward opening, the middle layer cylinder is reversely buckled in the outer layer cylinder, at least one part of the inner layer cylinder extends out of the opening of the middle layer cylinder into the middle layer cylinder, a medicament adding port, a liquid inlet at the lower end and a diversion port at the upper section are arranged on the inner layer cylinder, an inner flow passage is formed in the inner layer cylinder, the liquid inlet, the medicament adding port and the diversion port are communicated with the inner flow passage, a middle flow passage is formed between the middle layer cylinder and the inner layer cylinder, an outer flow passage is formed between the outer layer cylinder and the middle layer cylinder, the inner flow passage, the middle flow passage and the outer flow passage are alternately arranged along the flow direction of liquid, a flocculation reaction cavity is formed in the inner flow passage, the inner flow passage is penetrated on the cylinder and the inner layer cylinder, and a blade of the stirrer is arranged in the inner layer cylinder so as to drive the flow direction of the liquid to flow inlet.
According to the solid-liquid separation circulating granulation fluidized bed, the outer layer cylinder, the middle layer cylinder and the inner layer cylinder are sequentially arranged in the outer-to-inner direction, the inner flow channel is formed in the inner layer cylinder, the middle flow channel is formed between the middle layer cylinder and the inner layer cylinder, the outer flow channel is formed between the outer layer cylinder and the middle layer cylinder, the inner flow channel, the middle flow channel and the outer flow channel are alternately arranged in the flowing direction of liquid (specifically, fluid in the inner flow channel flows from bottom to top, fluid in the middle flow channel flows from bottom to top, and fluid in the outer flow channel flows from bottom to top), the whole length of the fluid flow channel is increased on the premise that the size of the cylinder is not increased, the time for collecting seed particles is further prolonged, the water flow path is more tortuous and complex, all water bodies are forced to pass through a sufficient flocculation reaction zone (flocculation reaction cavity), uniform mixing between a medicament and sludge particles is ensured, collision between particles is increased when the path length of the flow channel is increased, fine particles are gathered into larger particles, and turbidity of the outer particles is reduced. The test result shows that the turbidity of water obtained by the solid-liquid separation circulating granulation fluid bed can be reduced to below 5 NTU.
The solid-liquid separation circulating granulation fluidized bed provided by the embodiment of the invention has the advantages of reducing the equipment size and the turbidity of external drainage.
In some embodiments, a mud collecting area is arranged at the lower section of the outer layer cylinder, and a preset distance is reserved between the liquid inlet of the inner layer cylinder and the mud collecting area.
In some embodiments, the water inlet of the inner barrel is at a distance of 800mm to 1200mm from the bottom of the outer barrel.
In some embodiments, the liquid inlet and the flow guiding port are arranged opposite to each other in the height direction of the outer layer cylinder, and the medicament adding port is arranged between the liquid inlet and the flow guiding port.
In some embodiments, the inner layer cylinder comprises a dirt inlet section and a granulating section which are sequentially connected, the dirt inlet section is positioned above the granulating section, the cross section of the granulating section is larger than the cross section of the dirt inlet section so as to form a stirring static area at the lower end of the inner layer cylinder, the dirt inlet is positioned on the dirt inlet section, and the flow guiding opening is positioned at the upper end of the granulating section.
In some embodiments, the pelletizing section comprises a first section provided with a first flared section at the junction with the dirt entering section and a second section provided with a second flared section at the junction with the first section.
In some embodiments, the dirt entry section is 350mm to 500mm in diameter.
In some embodiments, the inclination of each of the first flared section and the second section is 40 ° -50 °.
In some embodiments, the first segment has a diameter of 400mm-800mm.
In some embodiments, the second section has a diameter of 2000mm-3300mm.
In some embodiments, the outer cylinder has a diameter of 3000mm to 4000mm.
In some embodiments, the middle layer cartridge has a diameter of 2400mm-3700mm.
In some embodiments, the ratio of the cross-section of the outer flow channel, the cross-section of the middle flow channel, and the maximum cross-section of the inner flow channel is 1:0.75-0.85:0.5-0.6.
In some embodiments, the distance between the lower end of the middle layer cylinder and the water inlet of the inner layer cylinder in the height direction of the outer layer cylinder is 500mm-900mm.
In some embodiments, the rotational speed of the blades of the agitator is 100-400 revolutions per minute.
In some embodiments, the solid-liquid separation circulating granulation fluidized bed further comprises a water collection sump disposed in an upper section of the outer shell.
In some embodiments, the solid-liquid separation circulating granulation fluidized bed further comprises a separation device, wherein the outer edge of the separation device is connected with the inner wall surface of the outer layer cylinder, and the inner edge of the separation device is connected with the outer wall surface of the middle layer cylinder.
In some embodiments, the separating device comprises a ring plate, wherein the outer edge of the ring plate is connected with the inner wall surface of the outer layer cylinder, the inner edge of the ring plate is connected with the outer wall surface of the middle layer cylinder, and a plurality of inclined holes are formed in the ring plate.
In some embodiments, the separation device comprises a plurality of connected and obliquely arranged tubes with oblique holes.
In some embodiments, the height difference between the lower end surface of the middle layer cylinder and the lower end of the inclined hole is 4000mm to 5000mm.
In some embodiments, the inclined holes have a depth of 200mm to 300mm.
In some embodiments, the inclined holes are inclined at an angle of 40 ° -50 °.
Drawings
Fig. 1 is a schematic structural view of a solid-liquid separation circulating granulation fluidized bed according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of an inner layer cylinder according to an embodiment of the present invention.
Reference numerals:
An outer layer cylinder 1, a mud collecting area 11, a water collecting tank 12;
a middle layer cylinder 2;
an inner layer cylinder 3, a dirt inlet section 31, a first flaring section 32, a first subsection 33, a second flaring section 34 and a second subsection 35;
a liquid inlet 301, a diversion port 302;
a stirrer 4;
a separating device 5, and an inclined hole 51.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The solid-liquid separation circulating granulation fluidized bed according to the embodiment of the present invention is described below with reference to fig. 1 to 2.
The solid-liquid separation circulating granulation fluidized bed comprises an outer layer cylinder 1, a middle layer cylinder 2, an inner layer cylinder 3 and a stirrer 4.
The outer layer cylinder 1, the middle layer cylinder 2 and the inner layer cylinder 3 are sequentially arranged along the direction from outside to inside, the middle layer cylinder 2 is provided with a downward opening, the middle layer cylinder 2 is reversely buckled in the outer layer cylinder 1, at least one part of the inner layer cylinder 3 extends out of the opening of the middle layer cylinder 2 into the middle layer cylinder 2, a medicament adding port, a liquid inlet 301 positioned at the lower end and a flow guide port 302 positioned at the upper section are arranged on the inner layer cylinder 3, an inner flow passage is formed in the inner layer cylinder 3, the liquid inlet 301, the medicament adding port and the flow guide port 302 are communicated with the inner flow passage, a middle flow passage is formed between the middle layer cylinder 2 and the inner layer cylinder 3, an outer flow passage is formed between the outer layer cylinder 1 and the middle layer cylinder 2, the inner flow passage, the middle flow passage and the outer flow passage are alternately arranged in the flowing direction of liquid, a flocculation reaction cavity is formed in the inner flow passage, a stirrer 4 penetrates through the middle layer cylinder 2 and the inner layer cylinder 3, and paddles of the stirrer 4 are positioned in the inner layer cylinder 3 to drive fluid to flow along the direction from the liquid inlet 301 to the flow guide port 302.
According to the solid-liquid separation circulating granulation fluidized bed, the outer layer cylinder 1, the middle layer cylinder 2 and the inner layer cylinder 3 are sequentially arranged in the outer-to-inner direction, the inner flow channel is formed in the inner layer cylinder 3, the middle flow channel is formed between the middle layer cylinder 2 and the inner layer cylinder 3, the outer flow channel is formed between the outer layer cylinder 1 and the middle layer cylinder 2, the inner flow channel, the middle flow channel and the outer flow channel are alternately arranged in the flowing direction of liquid (specifically, as shown in fig. 1, fluid in the inner flow channel flows from bottom to top, fluid in the middle flow channel flows from bottom to top, and fluid in the outer flow channel flows from bottom to top), on the premise that the cylinder size is not increased, the whole length of the fluid flow channel is increased, so that the time for collecting seed particles is prolonged, the water flow path is more tortuous and complicated, all water bodies are forced to pass through a sufficient flocculation reaction zone (flocculation reaction cavity), uniform mixing between a medicament and sludge particles is ensured, the collision opportunity between particles is increased, so that fine particles have more time to be collected into larger particles, and turbidity of outer drainage is reduced. The test result shows that the turbidity of water obtained by the solid-liquid separation circulating granulation fluid bed can be reduced to below 5 NTU.
The solid-liquid separation circulating granulation fluidized bed provided by the embodiment of the invention has the advantages of reducing the equipment size and the turbidity of external drainage.
The lower section of the outer layer cylinder 1 is provided with a mud collecting area 11, and a liquid inlet 301 of the inner layer cylinder 3 and the mud collecting area 11 have a preset distance in the height direction of the outer layer cylinder 1.
According to the solid-liquid separation circulating granulation fluidized bed, the space between the liquid inlet 301 of the inner layer cylinder body 3 and the mud collecting area 11 is preset. On one hand, the problem that the turbidity of the external drainage is increased due to the fact that the length of an inner runner and the reaction time are reduced too much is avoided, and on the other hand, the problem that sludge particles in a sludge collecting area 11 are disturbed due to stirring of a stirrer 4 with too small interval, so that a sludge-water mixture in a suspension area gradually converges to form a suspended sludge layer and water produced in the suspension area, and sedimentation of suspended matters is not facilitated is avoided. Therefore, the solid-liquid separation circulating granulation fluidized bed provided by the embodiment of the invention has the advantage of improving the sludge sedimentation treatment effect.
The distance between the water inlet of the inner cylinder body 3 and the bottom of the outer cylinder body 1 is 800mm-1200mm. Similarly, the solid-liquid separation circulating granulation fluidized bed has the advantages of miniaturization of equipment and turbidity reduction. Alternatively, the water inlet of the inner cylinder 3 may be at a distance of 800mm, 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm and 1200mm from the bottom of the outer cylinder 1.
As shown in fig. 1 and 2, the liquid inlet 301 and the diversion port 302 are disposed opposite to each other in the height direction of the outer cylinder 1, and the chemical addition port is disposed between the liquid inlet 301 and the diversion port 302. It will be appreciated that the liquid inlet 301 and the air guide 302 are provided at both ends of the inner cylinder 3 in the axial direction.
According to the solid-liquid separation circulating granulation fluidized bed, the liquid inlet 301 and the diversion port 302 are oppositely arranged in the height direction of the outer layer cylinder 1, so that the length of the inner flow path is prolonged as much as possible. Furthermore, the solid-liquid separation circulating granulation fluidized bed of the embodiment of the invention is beneficial to reducing the turbidity of the external drainage.
As shown in fig. 1 and 2, the inner layer cylinder 3 includes a dirt inlet section 31 and a granulating section which are sequentially connected, the dirt inlet section 31 is located above the granulating section, the cross section of the granulating section is larger than the cross section of the dirt inlet section 31 to form a stirring static area at the lower end of the inner layer cylinder 3, the dirt inlet is located on the dirt inlet section 31, and the flow guiding opening 302 is located at the upper end of the granulating section.
According to the solid-liquid separation circulating granulation fluidized bed provided by the embodiment of the invention, the inner layer cylinder body 3 comprises the sewage inlet section 31 and the granulation section which are sequentially connected, and the cross section of the granulation section is larger than the cross section of the sewage inlet section 31, so that a stirring static area can be formed at the lower end of the inner layer cylinder body 3, and the stirring of suspended particles in the mud collecting area 11 by the stirrer 4 is further avoided. Thus, the particle sedimentation efficiency is further improved and the turbidity of the external drainage is reduced.
As shown in fig. 1 and 2, the granulating section includes a first section 33 and a second section 35, the first section 33 is provided with a first flaring section 32 at the connection with the dirt-entering section 31, and the second section 35 is provided with a second flaring section 34 at the connection with the first section 33.
According to the solid-liquid separation circulating granulation fluidized bed, the granulation section is divided into the first section 33 and the second section 35, the first section 33 is provided with the first flaring section 32 at the joint with the sewage inlet section 31, the second section 35 is provided with the second flaring section 34 at the joint with the first section 33, and the flow velocity of the fluid with the same volume in the flow passage with the large section is smaller than that of the fluid with the small section, so that the flow velocity of the water flow can be gradually reduced along the flow direction of the fluid, the reaction time in the flocculation reaction cavity is further prolonged, and the sedimentation of solid particles is further facilitated. Furthermore, the solid-liquid separation circulating granulation fluidized bed of the embodiment of the invention is beneficial to further reducing the turbidity of the external drainage.
Specifically, as shown in fig. 2, the dirt entering section 31, the first flaring section 32, the first subsection 33, the second flaring section 34, and the second subsection 35 are disposed in order in the bottom-to-top direction.
The diameter of the dirt inlet section 31 is 350mm-500mm. On the one hand, the problem that particles are settled in the negative pressure disturbance mud collecting area 11 generated by the blades of the stirrer 4 due to the overlarge diameter of the dirt inlet section 31 is avoided. Another advantage is that the problem of limited inflow velocity caused by too small diameter of the sewage inflow section 31 is avoided, and the overall sewage treatment effect is affected.
Alternatively, the diameter of the soil inlet section 31 is 350mm, 360mm, 370mm, 380mm, 390mm, 400mm, 410mm, 420mm, 430mm, 440mm, 450mm, 460mm, 470mm, 480mm, 490mm and 500mm.
The angle of inclination of each of the first flared section 32 and the second section 35 is 40 ° -50 °. On the one hand, the problem that the flow velocity of water flow is too large (the flow velocity is too large, which is unfavorable for sedimentation) caused by too large inclination angle to cause too narrow middle flow passage is avoided. On the other hand, the problems that the inclination angle is too small and the fluid in the inner flow channel is not obviously slowed down, so that the reaction time of reactants in the flocculation reaction cavity is too short and particles in the reaction cavity are not easy to settle and aggregate are avoided. Furthermore, the solid-liquid separation circulating granulation fluidized bed provided by the embodiment of the invention has the advantage of further reducing the turbidity of external drainage.
Alternatively, the inclination angle of each of the first flared section 32 and the second section 35 may be 40 °, 41 °, 42 °, 43 °, 44 °, 45 °, 46 °,47 °, 48 °, 49 °, and 50 °.
The first section 33 has a diameter of 400mm-800mm. Alternatively, the diameter of the first segment 33 is 400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm, 750mm and 800mm.
The second section 35 has a diameter of 2000mm-3300mm. The diameter of the second section 35 may be 2000mm, 2100mm, 2200mm, 2300mm, 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, 2900mm, 3000mm, 3100mm, 3200mm and 3300mm.
The diameter of the outer cylinder 1 is 3000mm-4000mm. Alternatively, the diameter of the outer cylinder 1 may be 3000mm, 3100mm, 3200mm, 3300mm, 3400mm, 3500mm, 3600mm, 3700mm, 3800mm, 3900mm and 4000mm.
The diameter of the middle layer cylinder 2 is 2400mm-3700mm. Alternatively, the diameter of the middle layer cylinder 2 may be 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, 2900mm, 3000mm, 3100mm, 3200mm, 3300mm, 3400mm, 3500mm, 3600mm and 3700mm.
Meanwhile, the ratio of the cross section of the outer runner, the cross section of the middle runner and the maximum cross section of the inner runner is further defined to be 1:0.75-0.85:0.5-0.6.
According to the solid-liquid separation circulating granulation fluidized bed, the ratio of the cross section of the outer runner to the cross section of the middle runner to the cross section corresponding to the inner runner is limited, so that the sufficient sedimentation reaction time can be ensured under the ratio, and the turbidity of the outer drainage can be further reduced. In addition, the cross section of the lower section of the middle flow channel is larger than that of the upper section, so that in the middle flow channel, fluid flows from top to bottom, and in the downward flowing process, the flow speed can be reduced due to the increase of the cross section, so that the problem that the middle flow channel impacts and stirs particles in the sludge collecting region 11 to enter high suspended matters in the flocculation reaction cavity is avoided, and heavy sludge particles in the sludge suspension layer fall into the sludge collecting region 11 again through the sludge channel. Thus, the solid-liquid separation circulating granulation fluidized bed is beneficial to further reducing the turbidity of the external drainage.
The distance between the lower end of the middle layer cylinder 2 and the water inlet of the inner layer cylinder 3 in the height direction of the outer layer cylinder 1 is 500mm-900mm. The water with sludge particles at the lower end of the middle layer cylinder 2 is prevented from being sucked into the inner layer cylinder 3 again due to small suction force of the stirrer 4 of the inner layer cylinder 3, and the flowing directions of fluid in the outer flow channel, the middle flow channel and the inner flow channel are disturbed. Therefore, the solid-liquid separation circulating granulation fluidized bed has the advantage of improving the sedimentation rate.
Alternatively, the interval between the lower end of the middle cylinder 2 and the water inlet of the inner cylinder 3 in the height direction of the outer cylinder 1 may be 500mm, 550mm, 600mm, 650mm, 700mm, 750mm, 800mm, and 950mm.
The rotation speed of the blades of the stirrer 4 is 100-400 rpm.
According to the solid-liquid separation circulating granulation fluidized bed, through limiting the rotating speed of the blades of the stirrer 4, on one hand, the problems that the rotating speed of the blades is too high, large shearing force is generated, large formed flocs are possibly damaged, and the large flocs are forced to be redispersed into small particles, so that the flocculation effect is reduced are avoided. On the other hand, the problems that the rotating speed of the blade is too small, the collision frequency between the flocculant and the sludge particles is reduced, the medicament is unevenly distributed, and the flocculation time is prolonged and the uniformity is poor are avoided. The solid-liquid separation circulating granulation fluidized bed provided by the embodiment of the invention has the advantage of improving the flocculation effect.
The solid-liquid separation circulating granulation fluidized bed of the embodiment of the invention further comprises a separation device 5, wherein the outer edge of the separation device 5 is connected with the inner wall surface of the outer layer cylinder 1, the inner edge of the separation device 5 is connected with the outer wall surface of the middle layer cylinder 2, the separation device 5 comprises a ring plate, the outer edge of the ring plate is connected with the inner wall surface of the outer layer cylinder 1, the inner edge of the ring plate is connected with the outer wall surface of the middle layer cylinder 2, and a plurality of inclined holes 51 are formed in the ring plate.
According to the solid-liquid separation circulating granulation fluidized bed, the overflow of sludge particles can be avoided through the separation device 5, and the overflowed sludge particles can collide with the hole walls of the inclined holes 51, so that particles sink down to separate water from the sludge particles, and the turbidity of external drainage is further reduced.
The embodiment of the present invention is not limited thereto, and for example, in other embodiments, the separation device 5 includes a plurality of pipes connected to each other and disposed obliquely, and the pipes have the inclined holes 51 thereon.
The solid-liquid separation circulating granulation fluidized bed provided by the embodiment of the invention has the specific working principle that sewage enters from the bottom of the inner layer cylinder 3 and is stirred by the blades, suspended matters begin to flocculate, the sewage flows upwards to the top of the middle layer cylinder 2 and flows back from the outer side, then returns to the bottom to start circulation, fine flocculated particles are deposited to a mud collecting area 11 to become mud along with the larger circulating accumulation, the mud particles are further prevented from overflowing through the inclined holes 51 in the separation device 5, clear water is discharged from the water collecting tank 12 above the fluidized bed, and finally the turbidity removal of the sewage is completed.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interactive relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A solid-liquid separation circulating granulation fluidized bed, characterized by comprising:
The device comprises an outer layer cylinder body, a middle layer cylinder body and an inner layer cylinder body, wherein the outer layer cylinder body, the middle layer cylinder body and the inner layer cylinder body are sequentially arranged along the direction from outside to inside, the middle layer cylinder body is provided with a downward opening, the middle layer cylinder body is reversely buckled in the outer layer cylinder body, at least one part of the inner layer cylinder body extends out of the opening of the middle layer cylinder body into the middle layer cylinder body, and a medicament adding port, a liquid inlet positioned at the lower end and a guide port positioned at the upper section are arranged on the inner layer cylinder body;
An inner flow channel is formed in the inner layer cylinder, the liquid inlet, the medicament adding port and the flow guiding port are communicated with the inner flow channel, a middle flow channel is formed between the middle layer cylinder and the inner layer cylinder, an outer flow channel is formed between the outer layer cylinder and the middle layer cylinder, and the inner flow channel, the middle flow channel and the outer flow channel are alternately arranged in the flowing direction of liquid, wherein a flocculation reaction cavity is formed in the inner flow channel;
The stirrer penetrates through the middle-layer cylinder body and the inner-layer cylinder body, and blades of the stirrer are positioned in the inner-layer cylinder body so as to drive fluid to flow along the direction from the liquid inlet to the diversion opening.
2. The solid-liquid separation circulating granulation fluidized bed according to claim 1, wherein,
The lower section of the outer layer cylinder body is provided with a mud collecting area, and a liquid inlet of the inner layer cylinder body is provided with a preset distance from the mud collecting area.
3. The solid-liquid separation circulating granulation fluidized bed of claim 2, wherein the distance from the water inlet of the inner layer cylinder to the bottom of the outer layer cylinder is 800mm-1200mm.
4. The solid-liquid separation circulating granulation fluidized bed of claim 1, wherein the liquid inlet and the flow guiding port are disposed opposite to each other in a height direction of the outer layer cylinder, and the chemical adding port is disposed between the liquid inlet and the flow guiding port.
5. The solid-liquid separation circulating granulation fluidized bed according to claim 1, wherein the inner layer cylinder comprises a sewage inlet section and a granulation section which are sequentially connected, the sewage inlet section is positioned above the granulation section, the cross section of the granulation section is larger than the cross section of the sewage inlet section to form a stirring static area at the lower end of the inner layer cylinder, the sewage inlet is positioned on the sewage inlet section, and the flow guiding opening is positioned at the upper end of the granulation section.
6. The solid-liquid separation circulating granulation fluidized bed of claim 5, wherein the granulation section comprises a first section and a second section, the first section is provided with a first flaring section at a connection with the dirt inlet section, and the second section is provided with a second flaring section at a connection with the first section.
7. The solid-liquid separation circulating granulation fluidized bed according to claim 6, wherein,
The diameter of the sewage inlet section is 350mm-500mm;
An inclination angle of each of the first flared section and the second section is 40 ° -50 °;
The diameter of the first section is 400mm-800mm;
the diameter of the second section is 2000mm-3300mm;
the diameter of the outer layer cylinder body is 3000-4000 mm;
the diameter of the middle layer cylinder body is 2400-3700 mm;
And/or the ratio of the cross section of the outer runner, the cross section of the middle runner and the maximum cross section of the inner runner is 1:0.75-0.85:0.5-0.6.
8. The solid-liquid separation circulating granulation fluidized bed according to claim 1, wherein,
The distance between the lower end of the middle layer cylinder and the water inlet of the inner layer cylinder in the height direction of the outer layer cylinder is 500-900 mm;
And/or the rotation speed of the blades of the stirrer is 100-400 rpm;
and/or, still include the water catch bowl, the water catch bowl sets up in the upper segment of outer barrel.
9. The solid-liquid separation circulating granulation fluidized bed according to claim 1, wherein,
The device also comprises a separation device, wherein the outer edge of the separation device is connected with the inner wall surface of the outer layer cylinder, and the inner edge of the separation device is connected with the outer wall surface of the middle layer cylinder;
the separating device comprises a ring plate, the outer edge of the ring plate is connected with the inner wall surface of the outer layer cylinder, the inner edge of the ring plate is connected with the outer wall surface of the middle layer cylinder, and a plurality of inclined holes are formed in the ring plate;
or, the separation device comprises a plurality of connected and obliquely arranged pipe bodies, and the pipe bodies are provided with inclined holes.
10. The solid-liquid separation circulating granulation fluidized bed of claim 9, wherein a height difference between a lower end surface of the middle layer cylinder and a lower end of the inclined hole is 4000mm to 5000mm;
and/or the depth of the inclined hole is 200mm-300mm;
and/or the inclined hole is inclined at an angle of 40-50 degrees.
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| CN111995022A (en) * | 2020-08-31 | 2020-11-27 | 李玲 | Solid-liquid separation equipment, use method thereof and sewage treatment system |
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| CN111995022A (en) * | 2020-08-31 | 2020-11-27 | 李玲 | Solid-liquid separation equipment, use method thereof and sewage treatment system |
| CN112239257A (en) * | 2020-10-13 | 2021-01-19 | 西安建筑科技大学 | Single-motor circulating granulation fluidized bed coupling filtering solid-liquid separation equipment |
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