Anaerobic denitrification reactor

Abstract

The utility model relates to the technical field of sewage treatment, and discloses an anaerobic denitrification reactor which comprises a reaction cylinder, a sealing cover is fixed at the top end of the reaction cylinder through a bolt, a feeding pipe is fixed on the sealing cover, a slope is arranged on the inner bottom surface of the reaction cylinder, an inner connecting pipe is fixed on the surface of the reaction cylinder, and an outer connecting pipe is fixed on the inner connecting pipe. A discharging structure is arranged in the inner connecting pipe, an outer connecting pipe is fixed to the outer side of the inner connecting pipe through bolts, and a filtering structure is arranged in the outer connecting pipe. According to the anaerobic denitrification reactor, materials can be poured into the reaction cylinder for reaction through the feeding pipe, treated sewage can be rapidly discharged through the discharging structure, the sewage discharged through the inner connecting pipe enters the outer connecting pipe, the sewage is filtered through the filtering structure, and in the sewage filtering process, the sewage can be discharged through the discharging structure, so that the sewage can be recycled. The filtering equipment can be automatically cleaned, so that the sewage treatment effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an anaerobic denitrification reactor. Background Technology

[0002] In wastewater treatment, anaerobic denitrification first oxidizes ammonia nitrogen to nitrate through nitrification under aerobic conditions, and then reduces the nitrate to gaseous nitrogen through denitrification under anoxic conditions (no dissolved oxygen or very low concentration) to remove it from the water. Biological denitrification processes all include anoxic and aerobic stages.

[0003] Application number CN202020978200.5 discloses a denitrification anaerobic reactor, including a reactor with a hollow interior. A support block, which is circular in shape, is provided at the lower end of the reactor. A sewage pipe runs through the outer wall of the reactor. In this invention, the wastewater after the reaction passes through the filter screen inside the filter tube. After passing through the filter screen, some impurities mixed in with the wastewater are trapped by the filter screen. When it is necessary to clean the filter screen inside the filter tube, the sewage connection pipe is moved to the rear end of the filter tube through the moving block on the outer wall of the sewage connection pipe. The filter tube is then rotated to the outside through the moving block on the outer wall of the filter tube to clean the inside of the filter tube. After cleaning, the filter tube is rotated back into the sewage pipe through the moving block on the outer wall of the filter tube. In this way, the filter screen and filter tube achieve the effect of automatic filtration and cleaning.

[0004] In the aforementioned patented structure, the sewage pipe and sewage connection pipe only separate sewage and impurities through a filter screen during the sewage discharge process. After the sewage and impurities are separated, the impurities in the sewage pipe and sewage connection pipe still need to be cleaned manually. This is inconvenient to clean the impurities in the sewage pipe and sewage connection pipe by oneself, thereby reducing the efficiency of sewage treatment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anaerobic denitrification reactor, which solves the problem of inconvenience in automatically cleaning up impurities after wastewater denitrification treatment, thereby achieving the aforementioned goal of facilitating the automatic cleaning of impurities after wastewater denitrification treatment.

[0006] This utility model provides the following technical solution: an anaerobic denitrification reactor, including a reaction cylinder, a sealing cover fixed to the top of the reaction cylinder by bolts, a feeding pipe fixed to the sealing cover, a slope provided on the bottom surface of the inside of the reaction cylinder, an inner pipe fixed to the surface of the reaction cylinder, a discharge structure provided inside the inner pipe, an outer pipe fixed to the outside of the inner pipe by bolts, and a filter structure provided inside the outer pipe.

[0007] The discharge structure includes a limiting ring and a flared mouth. The limiting ring is fixed on the surface of the inner pipe, and the flared mouth is opened at one end of the inner pipe. An inner connecting groove is opened inside the inner pipe, and an inner connecting rotating ring rotates inside the inner connecting groove. A driven shaft is provided inside the inner pipe, and a driven spiral blade is fixed on the surface of the driven shaft. A spline groove is opened at the right end of the driven shaft.

[0008] The filter structure includes a filter chamber and a drain chamber. The filter chamber is located inside the outer connecting pipe, and the drain chamber is located outside the outer connecting pipe. The filter chamber has filter holes inside. A motor is fixed to the right end of the outer connecting pipe, and a drive shaft is fixed to the output end of the motor. An inner spiral blade is fixed to the surface of the drive shaft, and a splined shaft is fixed to the left end of the drive shaft. An outer support groove is located at the right end of the drain chamber, and an outer support ring rotates inside the outer support groove. An inner support groove is located at the left end of the drain chamber, and an inner support ring rotates inside the inner support groove. Outer spiral blades are fixed to the outer and inner support rings. A limit groove is located inside the outer connecting pipe. A slag discharge pipe is fixed inside the filter chamber, and a drain pipe is fixed inside the drain chamber.

[0009] Preferably, the reaction cylinder, inner pipe, outer pipe and slag discharge pipe are connected, and the slag discharge pipe, filter hole and drain pipe are connected.

[0010] Preferably, the limiting ring is adapted to the limiting groove, and the outer tube is provided in two sets, which are fixed to the surface of the inner tube by bolts.

[0011] Preferably, the filter chamber and the drain chamber are connected by an outer support rotating groove, the right end of the inner spiral blade is fixedly connected to the inner surface of the outer support rotating ring, and both ends of the outer spiral blade are fixedly connected to the outer surface of the outer support rotating ring and the inner support rotating ring.

[0012] Preferably, the inner spiral blade is in contact with the inner wall of the filter chamber, and the outer spiral blade is in contact with the inner wall of the drain chamber.

[0013] Preferably, the driven spiral blade is fixedly connected to the inner surface of the inner rotating ring, and the spline shaft is adapted to the spline groove.

[0014] Preferably, the flared opening is flush with the lowest right end of the ramp, and the left portion of the driven spiral blade extends into the flared opening.

[0015] Compared with the prior art, the present invention provides an anaerobic denitrification reactor, which has the following beneficial effects:

[0016] 1. In this anaerobic denitrification reactor, when wastewater passes through the inner pipe, the motor can drive the drive shaft to rotate, and the drive shaft can drive the driven shaft to rotate through the spline shaft and spline groove. The driven shaft can drive the driven spiral blades to rotate. At this time, the driven spiral blades can quickly transport the wastewater accumulated at the flared end to the outside, so as to increase the discharge speed of the wastewater and make the wastewater quickly enter the outer pipe so that the outer pipe can quickly filter and treat the wastewater.

[0017] 2. This anaerobic denitrification reactor uses inner spiral blades to rapidly transport wastewater into the filtration chamber. The wastewater inside the filtration chamber is filtered through filter holes and then enters the drainage chamber. The outer spiral blades then rapidly transport the filtered wastewater to the drain pipe, from which it is discharged. Simultaneously, filtered impurities remain inside the filtration chamber and are transported to the slag discharge pipe via the outer spiral blades, from which they are discharged. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of a portion of the structure at point A;

[0020] Figure 3 This is a schematic diagram of the internal pipe of the present invention.

[0021] Figure 4 This is a schematic diagram of the external nozzle of the present invention.

[0022] Figure 5 This is an exploded view of the driven shaft and drive shaft of the present invention.

[0023] The components are as follows: 1. Reaction cylinder; 2. Sealing cover; 3. Feed pipe; 4. Inclined ramp; 5. Inner pipe; 51. Limiting ring; 52. Bell mouth; 53. Inner rotating groove; 54. Inner rotating ring; 55. Driven shaft; 56. Driven spiral blade; 57. Spline groove; 6. Outer pipe; 61. Filter chamber; 62. Drainage chamber; 63. Filter hole; 64. Motor; 65. Drive shaft; 66. Inner spiral blade; 67. Splined shaft; 68. Outer support rotating groove; 69. Outer support rotating ring; 610. Inner support rotating groove; 611. Inner support rotating ring; 612. Outer spiral blade; 613. Limiting groove; 614. Slag discharge pipe; 615. Drainage pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figure 1-5 This utility model provides an anaerobic denitrification reactor, including a reaction cylinder 1. A sealing cover 2 is fixed to the top of the reaction cylinder 1 by bolts. A feeding pipe 3 is fixed to the sealing cover 2. A slope 4 is provided on the bottom surface of the inside of the reaction cylinder 1. An inner pipe 5 is fixed to the surface of the reaction cylinder 1. A discharge structure is provided inside the inner pipe 5. An outer pipe 6 is fixed to the outside of the inner pipe 5 by bolts. A filter structure is provided inside the outer pipe 6.

[0026] The discharge structure includes a limiting ring 51 and a flared mouth 52. The limiting ring 51 is fixed on the surface of the inner pipe 5. The flared mouth 52 is opened at one end of the inner pipe 5. An inner connecting groove 53 is opened inside the inner pipe 5. An inner connecting rotating ring 54 rotates inside the inner connecting groove 53. A driven shaft 55 is provided inside the inner pipe 5. A driven spiral blade 56 is fixed on the surface of the driven shaft 55. A spline groove 57 is opened at the right end of the driven shaft 55.

[0027] The filter structure includes a filter chamber 61 and a drain chamber 62. The filter chamber 61 is located inside the outer pipe 6, and the drain chamber 62 is located outside the outer pipe 6. The filter chamber 61 has filter holes 63 inside. A motor 64 is fixed to the right end of the outer pipe 6, and a drive shaft 65 is fixed to the output end of the motor 64. An inner spiral blade 66 is fixed to the surface of the drive shaft 65, and a splined shaft 67 is fixed to the left end of the drive shaft 65. An outer support groove 68 is located at the right end of the drain chamber 62, and an outer support ring 69 rotates inside the outer support groove 68. The drain chamber 62 has a... An inner support rotating groove 610 is provided, and an inner support rotating ring 611 rotates inside the inner support rotating groove 610. An outer spiral blade 612 is fixed on the outer support rotating ring 69 and the inner support rotating ring 611. A limiting groove 613 is opened inside the outer pipe 6. A slag discharge pipe 614 is fixed inside the filter chamber 61, and a drain pipe 615 is fixed inside the drain chamber 62. Wastewater and the additives for the wastewater to be treated are added to the reaction cylinder 1 through the feeding pipe 3, so that the wastewater can be treated. The treated wastewater can be discharged through the pipeline composed of the inner pipe 5 and the outer pipe 6.

[0028] Furthermore, the reaction cylinder 1, inner pipe 5, outer pipe 6 and slag discharge pipe 614 are connected, and the slag discharge pipe 614, filter hole 63 and drain pipe 615 are connected, so that the sewage inside the reaction cylinder 1 can be discharged through the inner pipe 5, outer pipe 6 and slag discharge pipe 614, and the impurities inside the filter chamber 61 can be discharged through the slag discharge pipe 614.

[0029] Furthermore, the limiting ring 51 is adapted to the limiting groove 613, and the outer pipe 6 is provided with two sets. The two sets of outer pipes 6 are fixed to the surface of the inner pipe 5 by bolts. The two sets of outer pipes 6 can be axially limited by the limiting ring 51 and the limiting groove 613. The two sets of outer pipes 6 can be fixed to the surface of the inner pipe 5 by bolts, so that the inner pipe 5 and the outer pipes 6 form a drainage pipe.

[0030] Furthermore, the filter chamber 61 and the drain chamber 62 are connected by an outer support rotating groove 68. The right end of the inner spiral blade 66 is fixedly connected to the inner surface of the outer support rotating ring 69, and both ends of the outer spiral blade 612 are fixedly connected to the outer surface of the outer support rotating ring 69 and the inner support rotating ring 611. When the inner spiral blade 66 rotates, it can drive the outer support rotating ring 69 to rotate, and then the outer spiral blade 612 can be driven to rotate through the outer support rotating ring 69, and the inner support rotating ring 611 can support the rotation of the outer spiral blade 612.

[0031] Furthermore, the inner spiral blade 66 is in contact with the inner wall of the filter chamber 61, and the outer spiral blade 612 is in contact with the inner wall of the drain chamber 62, so that the impurities attached to the inner wall of the filter chamber 61 can be scraped clean by the inner spiral blade 66, and the impurities attached to the inner wall of the drain chamber 62 can be scraped clean by the outer spiral blade 612.

[0032] Furthermore, the driven spiral blade 56 is fixedly connected to the inner surface of the inner rotating ring 54, and the spline shaft 67 is adapted to the spline groove 57, so that the drive shaft 65 and the driven shaft 55 can be connected through the spline shaft 67 and the spline groove 57, so that the drive shaft 65 can drive the driven shaft 55 to rotate, and when the driven shaft 55 drives the driven spiral blade 56 to rotate, the driven spiral blade 56 can be supported to rotate through the inner rotating ring 54.

[0033] Furthermore, the flared mouth 52 is flush with the lowest right end of the ramp 4, and the left side of the driven spiral blade 56 extends into the interior of the flared mouth 52, so that the sewage and sludge settled at the bottom of the reaction tank 1 can be transported to the flared mouth 52 by the ramp 4, and the sewage and sludge accumulated at the flared mouth 52 can be transported to the inner pipe 5 by the driven spiral blade 56.

[0034] In operation, wastewater and additives for treating the wastewater are added to the reaction cylinder 1 through the feed pipe 3, thus treating the wastewater. The treated wastewater can be discharged through the pipeline consisting of the inner pipe 5 and the outer pipe 6. When the wastewater passes through the inner pipe 5, the starter motor 64 drives the drive shaft 65 to rotate. The drive shaft 65, through the spline shaft 67 and spline groove 57, drives the driven shaft 55 to rotate. The driven shaft 55 drives the driven spiral blades 56 to rotate. At this time, the driven spiral blades 56 can quickly transport the wastewater accumulated at the flared mouth 52 outward to increase the discharge speed of the wastewater, allowing the wastewater to quickly enter the outer pipe 6 so that the outer pipe 6 can quickly filter the wastewater. After the wastewater enters the filter chamber 61 through the inner pipe 5, the drive shaft 65 drives the inner spiral blades 56 to rotate. When the inner spiral blade 66 rotates, it drives the outer spiral blade 612 to rotate via the outer support ring 69. Therefore, the inner spiral blade 66 can quickly transport sewage into the filter chamber 61. The sewage inside the filter chamber 61 is filtered through the filter hole 63 and then enters the drain chamber 62. The outer spiral blade 612 can quickly transport the filtered sewage to the port of the drain pipe 615, and the drain pipe 615 discharges the filtered sewage. At the same time, the filtered impurities remain inside the filter chamber 61 and can be transported to the port of the slag discharge pipe 614 via the outer spiral blade 612, and the slag discharge pipe 614 discharges the filtered impurities. Thus, during the sewage discharge process, the sewage can also be filtered and the filtered impurities can be cleaned up by itself, thereby improving the efficiency of sewage treatment.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anaerobic denitrification reactor, comprising a reaction vessel (1), characterized in that: The top of the reaction cylinder (1) is fixed with a sealing cap (2) by bolts. A feeding pipe (3) is fixed on the sealing cap (2). A slope (4) is provided on the bottom surface of the reaction cylinder (1). An inner pipe (5) is fixed on the surface of the reaction cylinder (1). A discharge structure is provided inside the inner pipe (5). An outer pipe (6) is fixed on the outside of the inner pipe (5) by bolts. A filter structure is provided inside the outer pipe (6). The discharge structure includes a limiting ring (51) and a flared mouth (52). The limiting ring (51) is fixed on the surface of the inner pipe (5). The flared mouth (52) is opened at one end of the inner side of the inner pipe (5). An inner connecting groove (53) is opened inside the inner pipe (5). An inner connecting ring (54) rotates inside the inner connecting groove (53). A driven shaft (55) is provided inside the inner pipe (5). A driven spiral blade (56) is fixed on the surface of the driven shaft (55). A spline groove (57) is opened at the right end of the driven shaft (55). The filter structure includes a filter chamber (61) and a drain chamber (62). The filter chamber (61) is located inside the outer pipe (6), and the drain chamber (62) is located outside the outer pipe (6). The filter chamber (61) has filter holes (63) inside. A motor (64) is fixed to the right end of the outer pipe (6), and a drive shaft (65) is fixed to the output end of the motor (64). An inner spiral blade (66) is fixed to the surface of the drive shaft (65), and a spline shaft (67) is fixed to the left end of the drive shaft (65). An outer support is located at the right end of the drain chamber (62). The outer support rotating groove (68) has an outer support rotating ring (69) inside it, the drain cavity (62) has an inner support rotating groove (610) at the left end, the inner support rotating groove (610) has an inner support rotating ring (611) inside it, the outer support rotating ring (69) and the inner support rotating ring (611) are fixed with an outer spiral blade (612), the outer pipe (6) has a limit groove (613) inside it, the filter cavity (61) has a slag discharge pipe (614) inside it, and the drain cavity (62) has a drain pipe (615) inside it.

2. The anaerobic denitrification reactor according to claim 1, characterized in that: The reaction cylinder (1), inner pipe (5), outer pipe (6) and slag discharge pipe (614) are connected, and the slag discharge pipe (614), filter hole (63) and drain pipe (615) are connected.

3. The anaerobic denitrification reactor according to claim 1, characterized in that: The limiting ring (51) is adapted to the limiting groove (613), and the outer pipe (6) is provided in two sets. The two sets of outer pipes (6) are fixed to the surface of the inner pipe (5) by bolts.

4. The anaerobic denitrification reactor according to claim 1, characterized in that: The filter chamber (61) and the drain chamber (62) are connected by an outer support rotating groove (68). The right end of the inner spiral blade (66) is fixedly connected to the inner surface of the outer support rotating ring (69). The two ends of the outer spiral blade (612) are fixedly connected to the outer surface of the outer support rotating ring (69) and the inner support rotating ring (611).

5. An anaerobic denitrification reactor according to claim 1, characterized in that: The inner spiral blade (66) is in contact with the inner wall of the filter chamber (61), and the outer spiral blade (612) is in contact with the inner wall of the drain chamber (62).

6. The anaerobic denitrification reactor according to claim 1, characterized in that: The driven spiral blade (56) is fixedly connected to the inner surface of the inner rotating ring (54), and the spline shaft (67) is adapted to the spline groove (57).

7. An anaerobic denitrification reactor according to claim 1, characterized in that: The flared mouth (52) is flush with the lowest right end of the ramp (4), and the left side portion of the driven spiral plate (56) extends into the flared mouth (52).

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