Prismatic three-phase separator

Abstract

The utility model discloses a prismatic three-phase separator which is fixedly arranged at the upper end of a UASB (Upflow Anaerobic Sludge Blanket) reactor, and a water distribution system for introducing sewage into the UASB reactor and a sludge bed for bearing sludge are sequentially arranged in the UASB reactor from bottom to top, comprising a separator outer cover and a baffle plate mechanism fixedly arranged in the separator outer cover, the baffle plate mechanism comprises a first fixed baffle plate, a second fixed baffle plate and a middle gas-liquid separation guide plate, and the first fixed baffle plate assembly and the second fixed baffle plate assembly jointly define an unclosed prism structure; and a gas-liquid separation guide plate is arranged between the first fixed baffle and the second fixed baffle. According to the utility model, the separation efficiency is improved through the gas-liquid separation guide plate. Meanwhile, the speed of returning the sludge to the sludge bed is increased, the separation effect is improved, the microbial flora is protected, and the occurrence rate of the sludge leakage phenomenon is reduced by 90% or above.

Description

TECHNICAL FIELD

[0001] The utility model relates to a three -phase separation equipment especially relates to a prismatic three -phase separator used in UASB reactor belongs to sewage treatment field. BACKGROUND

[0002] With the continuous improvement of industrialization degree of our country, the continuous expansion of industrial production scale, the existing sewage treatment equipment more and more difficult to meet the needs of modernization, high -efficient industrial production. Especially for the design of improving the efficiency of anaerobic reactor in sewage treatment, especially the design of three -phase separator in anaerobic reactor, gradually become the key to improve the effect of industrial wastewater treatment.

[0003] Next to the most representative UASB reactor in anaerobic reactor is specifically explained. The UASB reactor used by the sewage treatment enterprise at present includes the following several parts: water inlet and water distribution system, the pool body of reactor and three -phase separator.

[0004] Among them, three -phase separator is the most characteristic and the most important device in the whole UASB reactor, it has two functions simultaneously: one, collecting the biogas produced in the reactor, two, make the suspended solids above the separator precipitate. For the above two functions, three -phase separator design avoids the biogas bubble to rise to the sedimentation zone, if the bubble rises to the surface, then will cause effluent turbidity, reduce the sedimentation efficiency, and loss the biogas produced in the early reaction. For the problem of biogas bubble, the three -phase separator commonly seen in the market basically can meet the corresponding technical requirements.

[0005] But the three -phase separator installed in the existing UASB reactor still has many other problems, specifically, its shortcomings mainly embodied in the following several aspects: 1, the structure design of the existing three -phase separator is single, and can not very good water conservancy condition, its separation efficiency is limited.2, the separation effect of the existing three -phase separator is not ideal, effluent turbidity, the SS value of effluent liquid is larger.3, the existing three -phase separator mud running phenomenon is serious, because the microbial flora is attached to the sludge and suspended solids, mud running phenomenon will cause the loss of microbial flora, thereby reducing the removal load of sewage BOD, prolonging the start -up period of UASB reactor.4, the existing three -phase separator weak impact resistance, in the sudden increase of water inflow, its stability and separation effect decline significantly, the removal load of sewage BOD drops.

[0006] Summarized above, how to provide a sludge -water separation effect is good, the impact resistance is strong, the sludge floc or particle settling velocity is fast, and can effectively avoid the sludge of three -phase separator of mud running, has become the problem that the technical personnel in the field urgently to be solved. UTILITY MODEL CONTENT

[0007] In view of the above defects of the prior art, the utility model aims at providing a spherical three-phase separator used in a UASB reactor.

[0008] The utility model discloses a purpose will be realized through the following technical schemes:

[0009] A prismatic three-phase separator is fixedly arranged at the upper end position of a UASB reactor, the inside of the UASB reactor is sequentially provided from bottom to top with a water distribution system for passing sewage into the UASB reactor and a sludge bed for carrying sludge, characterized by comprising a separator cover and a baffle mechanism fixedly arranged in the separator cover, the baffle mechanism comprises first fixed baffles, second fixed baffles and intermediate gas-liquid separation guide plates, gaps are left between the first fixed baffles, the first fixed baffle assembly and the second fixed baffle assembly jointly enclose a non-closed prismatic structure, the first fixed baffle assembly and the second fixed baffle assembly are both enclosed by two mirror-symmetrical liquid flow baffles to form a non-closed prismatic structure, and the first fixed baffles and the second fixed baffles are arranged with gas-liquid separation guide plates therebetween.

[0010] Preferably, 4-6 gas-liquid separation guide plates are symmetrically arranged above the first fixed baffles and below the second fixed baffles.

[0011] Preferably, the baffle mechanism comprises a first fixed baffle assembly and a second fixed baffle assembly matched with each other, the first fixed baffle assembly is arranged directly below the second fixed baffle assembly, and the top end of the first fixed baffle and the bottom end of the second fixed baffle are the same distance from the inner wall of the separator cover.

[0012] Preferably, the gas-liquid separation guide plates are downwardly inclined at an angle of 40-60°.

[0013] Preferably, a gas chamber for storing gas generated in the reaction process is formed above the inside of the triangle formed by the second fixed baffles, a gas guide pipe is connected to the second fixed baffles, one end of the gas guide pipe extends into the gas chamber, and the other end of the gas guide pipe extends out of the UASB reactor.

[0014] Preferably, the baffle mechanism further comprises side baffles fixed to the inner wall of the separator cover, the side baffles are used to block water mixed with large sludge particles, so that the large sludge particles fall to the bottom of the anaerobic tower under the action of gravity to complete the preliminary separation of sludge in part of the water.

[0015] Preferably, the baffle mechanism further comprises a center baffle fixedly arranged in the separator cover for blocking the water body mixed with large sludge particles from directly entering the flow guide area from the region between the first fixed baffles, the center baffle is arranged at a lower position of the region between the first fixed baffles, and the maximum width of the center baffle in the horizontal direction is greater than the gap width between the first fixed baffles.

[0016] Preferably, the vertical section of the center baffle is in a prismatic shape, and the length of the side edge of the center baffle is equal to the length of the bottom edge.

[0017] The utility model discloses a gas-liquid separation flow guide plate is used inside, and the separation efficiency of three-phase separator is improved obviously.

[0018] In conclusion, the utility model has excellent effect, clever structure, strong impact resistance, and effectively alleviates the problem of sludge running, has high use and promotion value.

[0019] The specific implementation of the utility model will be further described in combination with the accompanying drawings to make the technical scheme of the utility model more easily understood and mastered. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the utility model;

[0021] Wherein: 1, separator cover;2, first fixed baffle;3, second fixed baffle;4, flow guide area;5, center baffle;6, side baffle;7, air chamber;8, gas-liquid separation flow guide plate. SPECIFIC IMPLEMENTATION

[0022] The utility model discloses a prismatic three-phase separator used in UASB reactor.

[0023] As Figure 1As shown, a prismatic three-phase separator is fixedly arranged at the upper end of a UASB reactor, the inside of the UASB reactor is sequentially provided from bottom to top with a water distribution system for introducing sewage into the UASB reactor, and a sludge bed for carrying sludge, characterized in that: it comprises a separator cover 1 and a baffle mechanism fixedly arranged in the separator cover, the baffle mechanism comprises a first fixed baffle 2, a second fixed baffle 3, and a gas-liquid separation guide plate 8 in between, gaps are left between the first fixed baffles 2, and the first fixed baffle 2 assembly and the second fixed baffle 3 assembly together enclose a non-closed prismatic structure, and the first fixed baffle 2 assembly and the second fixed baffle 3 assembly are both enclosed by two mirror-symmetrical liquid flow baffles to form a non-closed prismatic structure, and the first fixed baffle 2 and the second fixed baffle 3 are arranged with the gas-liquid separation guide plate 8 in between.

[0024] The first fixed baffle 2 above and the second fixed baffle 3 below are symmetrically provided with 4-6 gas-liquid separation guide plates 8.

[0025] The baffle mechanism comprises a first fixed baffle 2 assembly and a second fixed baffle 3 assembly that match each other, the first fixed baffle 2 assembly is arranged directly below the second fixed baffle 3 assembly, and the top end of the first fixed baffle 2 and the bottom end of the second fixed baffle 3 are the same distance from the inner wall of the separator cover 1.

[0026] The gas-liquid separation guide plate 8 is inclined downward at an angle of 50-70°.

[0027] The second fixed baffle 3 forms a triangular shape inside which there is a gas chamber 7 for storing gas generated during the reaction, the second fixed baffle 3 is connected with a gas guide pipe, one end of the gas guide pipe extends into the gas chamber 7, and the other end extends out of the UASB reactor.

[0028] The baffle mechanism further comprises a side baffle 6 fixed to the inner wall of the separator cover 1, the side baffle 6 is used to block water mixed with larger sludge particles, so that the larger sludge particles fall to the bottom of the anaerobic tower under the action of gravity, and the preliminary separation of sludge in part of the water body is completed.

[0029] The baffle mechanism further comprises a center baffle 5 fixedly arranged in the separator cover 1 and used to block water mixed with larger sludge particles from directly entering the flow guide area 4 from the area between the first fixed baffles 2, the center baffle 5 is arranged at a lower position in the area between the first fixed baffles 2, and the maximum width of the center baffle 5 in the horizontal direction is greater than the gap width between the first fixed baffles 2.

[0030] The vertical cross-section of the central baffle 5 is prismatic, and the side and bottom sides of the central baffle 5 are of equal length.

[0031] The working process of this utility model is briefly described below: First, wastewater enters the UASB reactor through a water distribution system installed within the reactor and flows upward through the sludge bed. The wastewater mixes with the sludge on the sludge bed and reacts with the microorganisms in the sludge within the reaction zone to produce biogas. Subsequently, the mixture of sludge, gas bubbles, and wastewater continues to rise and collides with the first fixed baffle 2 and the central baffle 5. During the collision, large sludge particles sink, while the relatively pure liquid in the mixture flows into the guide zone 4 through the gaps between and on both sides of the first fixed baffle 2. This process achieves preliminary separation of large particulate impurities in the mixture. The mixture then continues to rise and successively collides with the gas-liquid separation guide plate 8 and the second fixed baffle 3. During this process, gas flows towards the gas chamber 7 along the direction of the guide plate 8, while the sludge particles sink. After the collision, the sludge attached to the first fixed baffle 2 assembly, the gas-liquid separation guide plate 8, and the second fixed baffle 3 assembly slides downwards. Under the action of gravity, small sludge flocs or particles aggregate and compress during the sliding process, forming a larger aggregate that sinks back onto the sludge bed. All the gas collects in the gas chamber 7 and is eventually discharged through the gas guide pipe.

[0032] This invention employs a gas-liquid separation guide plate 8 internally, significantly improving the separation efficiency of the three-phase separator. Simultaneously, the guide plate design allows for a larger contact area when the mixture of sludge, air bubbles, and wastewater collides with the guide plate during upflow, facilitating the aggregation of sludge and fine flocs, reducing head loss, and optimizing hydraulic conditions. This also enhances gas-liquid separation during upflow, allowing sludge flocs or particles in the mixture to aggregate, compress, and sink along the guide plate upon contact. According to Stokes' equation, the structural design of this invention significantly accelerates the return of sludge flocs or particles to the sludge bed, improving sludge-water separation and, to some extent, protecting the microbial community within the reactor, minimizing sludge runoff. Furthermore, the invention utilizes four partially sealed baffle structures, achieving a good synergistic effect and improving the shock resistance of the three-phase separator. In summary, this utility model has excellent effects, ingenious structure, strong impact resistance, and effectively alleviates the problem of sludge runoff, and has high application and promotion value.

[0033] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit and the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto and not by the above description, which is intended to be included within the present application insofar as it falls within the meaning and the scope of the equivalent elements of the claims, no figure reference in the claims being considered as limiting the claim concerned.

[0034] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the present specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A prismatic three-phase separator, fixedly arranged at an upper end position of a UASB reactor, an inside of the UASB reactor being sequentially provided from bottom to top with a water distribution system for passing sewage into the UASB reactor, and a sludge bed for carrying sludge, characterized in that: The utility model relates to a separator cover (1) and the baffle mechanism fixedly arranged in the separator cover (1), the baffle mechanism includes first fixed baffle (2) and second fixed baffle (3) and the gas-liquid separation guide plate (8) in the middle, the first fixed baffle (2) is left with the gap between, the first fixed baffle (2) assembly and the second fixed baffle (3) assembly jointly enclose a not closed prism structure, the first fixed baffle (2) assembly and the second fixed baffle (3) assembly are all by two mirror image liquid flow baffle and jointly enclose a not closed prism structure, the first fixed baffle (2) and second fixed baffle (3) are arranged with gas-liquid separation guide plate (8) in the middle.

2. The prismatic three-phase separator according to claim 1, characterized in that: The first fixed baffle (2) top and second fixed baffle (3) bottom are away from the inner wall of the separator cover (1) same distance.

3. The prismatic three-phase separator of claim 1, wherein: The baffle mechanism includes mutually matched first fixed baffle (2) assembly and second fixed baffle (3) assembly, the first fixed baffle (2) assembly is arranged in the just below of second fixed baffle (3) assembly, the first fixed baffle (2) top and the second fixed baffle (3) bottom are away from the inner wall of the separator cover (1) same distance.

4. The prismatic three-phase separator of claim 2, wherein: The gas-liquid separation guide plate (8) downward inclination angle is 40-60 DEG.

5. The prismatic three-phase separator of claim 1, wherein: The second fixed baffle (3) is formed with a gas chamber (7) in the upper portion of the triangular interior, a gas guide pipe is connected to the second fixed baffle (3), one end of the gas guide pipe extends into the gas chamber (7), and the other end of the gas guide pipe extends out of the UASB reactor.

6. The prismatic three-phase separator of claim 3, wherein: The baffle mechanism further includes a side baffle (6) fixed to the inner wall of the separator cover (1), the side baffle (6) is used to block the water mixed with sludge particles, so that the sludge particles fall to the bottom of the anaerobic tower under the action of gravity, and the preliminary separation of the sludge in the water is completed.

7. The prismatic three-phase separator of claim 3, wherein: The baffle mechanism further includes a center baffle (5) fixedly arranged in the separator cover (1) and used to block the water mixed with sludge particles from entering the flow guide area directly from the area between the first fixed baffles (2), the center baffle (5) is arranged below the area between the first fixed baffles (2), and the maximum width of the center baffle (5) in the horizontal direction is greater than the gap width between the first fixed baffles (2).

8. The prismatic three-phase separator of claim 7, wherein: The vertical section of the center baffle (5) is in a prismatic shape, and the length of the side of the center baffle (5) is equal to the length of the bottom.

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