Quick starting device of two-stage SBR-EGSB (sequencing batch reactor-expanded granular sludge bed) denitrification system

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a quick starting device for a two-section SBR-EGSB (sequencing batch reactor-expanded granular sludge bed) denitrification system, which comprises a device box, an L-shaped partition plate is arranged at a position close to the top in the device box, and the inside of the device box is divided into an EGSB reaction cavity and an SBR (sequencing batch reactor) reaction cavity by the L-shaped partition plate. The SBR reaction area and the EGSB reaction area are integrally arranged in the box body, so that the intermediate link of conveying sewage by a pump body and a pipeline is omitted, the time is saved, the sewage treated in the EGSB reaction cavity enters the SBR reaction cavity through the up-flow cavity to be treated, and meanwhile, the screw rod in the up-flow cavity can accelerate the flow speed of the sewage and shorten the nitrogen removal starting period.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a two-stage SBR-EGSB denitrification system quick start device. Background Art

[0002] The SBR-EGSB denitrification system is a combined denitrification process and an efficient sewage treatment technology that combines the advantages of the SBR (Sequencing Batch Reactor) and EGSB (Expanded Granular Sludge Bed) processes. It is mainly used for denitrification treatment of urban domestic sewage and industrial wastewater.

[0003] Currently, some SBR-EGSB denitrification systems on the market have SBR reactors and EGSB reactors as two independent treatment units. The two treatment units are connected by pumps and pipes, and the sewage needs to be transported to another treatment unit through pumps and pipes, resulting in a long denitrification startup cycle.

[0004] Therefore, we proposed a two-stage SBR-EGSB denitrification system quick start-up device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problem of some current SBR-EGSB denitrification systems, in which the SBR reactor and the EGSB reactor are mostly two independent treatment units, which are connected by a pump body and a pipeline, and the sewage needs to be transported to the other treatment unit through the pump body and the pipeline, resulting in a long denitrification startup cycle.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a two-stage SBR-EGSB denitrification system quick start device, including a device box, an L-shaped partition plate is arranged near the top of the device box, and the device box is divided into an EGSB reaction chamber and an SBR reaction chamber by the L-shaped partition plate, and the EGSB reaction chamber is provided with a water distributor, an isolation net, and a three-phase separator from bottom to top in sequence, and a suspension zone is arranged between the isolation net and the three-phase separator, and expanded granular sludge is arranged in the suspension zone, and a sewage conduit is connected to the water distributor, and a first water inlet is arranged at one end of the L-shaped partition plate near the top wall of the device box, and a water inlet is arranged on the inner wall of the device box near the L-shaped partition plate. A receiving plate is provided, and an upflow chamber is formed between the receiving plate, the L-shaped partition plate, and the inner wall of the device box. A plurality of spiral rods are provided between the receiving plate and the inner top wall of the device box, and a first sprocket transmission mechanism box is provided on the top of the device box, and a first motor is provided on the first sprocket transmission mechanism box. A baffle is provided in the SBR reaction chamber, and the SBR reaction chamber is divided into a pre-reaction zone and a main reaction zone by the baffle. A second water inlet is provided between the bottom of the baffle and the L-shaped partition plate, an aeration pipe is provided in the main reaction zone, and activated sludge is provided in the main reaction zone, a decanter is provided on the inner side wall of the main reaction zone, and an inspection port is provided at a position corresponding to the decanter on the top of the main reaction zone.

[0007] Furthermore, the aeration pipe is located above the second water inlet.

[0008] Furthermore, a mud discharge pipe is arranged near the bottom of the main reaction zone, and a sludge pump connected to the mud discharge pipe is arranged outside the device box.

[0009] Furthermore, the first sprocket transmission mechanism box includes a first box body, a plurality of first sprockets are arranged in the first box body, the first sprockets are fixedly sleeved on the top of the spiral rod, and a first transmission chain is arranged on the plurality of first sprockets, a plurality of first connecting columns are arranged in the first box body, a second sprocket is arranged on each of the plurality of first connecting columns, a plurality of the second sprockets are symmetrically arranged on both sides of the first transmission chain, and the second sprockets are meshed with the first transmission chain, and one of the spiral rods is connected to the first motor.

[0010] Furthermore, a receiving rod is provided in the main reaction zone, a plurality of stirring rods are provided between the receiving rod and the top wall of the main reaction zone, a second sprocket transmission mechanism box is provided on the top of the device box, and a second motor is provided on the top of the second sprocket transmission mechanism box.

[0011] Furthermore, the second sprocket transmission mechanism box includes a second box body, a plurality of third sprockets are arranged in the second box body, the third sprockets are fixedly sleeved on the top of the stirring rod, and a second transmission chain is arranged on the plurality of third sprockets, a plurality of second connecting columns are arranged in the second box body, a fourth sprocket is arranged on the plurality of second connecting columns, the plurality of fourth sprockets are symmetrically arranged on both sides of the second transmission chain, and the fourth sprockets are meshed with the second transmission chain, and one of the stirring rods is connected to the second motor.

[0012] The beneficial effects of the utility model are as follows: by integrating the SBR reaction zone and the EGSB reaction zone in a box, the intermediate link of sewage transportation by the pump body and the pipeline is eliminated, thus saving time; the sewage treated in the EGSB reaction chamber will enter the SBR reaction chamber through the upflow chamber for treatment; at the same time, the spiral rod in the upflow chamber can accelerate the flow rate of the sewage, thus shortening the denitrification startup cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a two-stage SBR-EGSB denitrification system quick start device of the utility model;

[0014] Figure 2 This is a schematic diagram of the first sprocket transmission mechanism box structure of the two-stage SBR-EGSB denitrification system quick start device of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the second sprocket transmission mechanism box of the two-stage SBR-EGSB denitrification system quick start device of the utility model.

[0016] The names corresponding to the marks in the figure are:

[0017] 1. Device box; 101. Suspension zone; 102. Pre-reaction zone; 103. Main reaction zone; 104. Inspection port; 2. L-shaped partition plate; 3. Water distributor; 4. Isolation net; 5. Three-phase separator; 6. Expanded granular sludge; 7. Sewage conduit; 8. Receiver plate; 9. Screw rod; 10. First sprocket transmission mechanism box; 1001. First box body; 1002. First sprocket; 1003. First transmission chain; 1004. First connection Column; 1005, second sprocket; 11, first motor; 12, baffle; 13, aeration pipe; 14, activated sludge; 15, decanter; 16, sludge discharge pipe; 17, sludge pump; 18, receiving rod; 19, stirring rod; 20, second sprocket transmission mechanism box; 2001, second box body; 2002, third sprocket; 2003, second transmission chain; 2004, second connecting column; 2005, fourth sprocket; 21, second motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0019] Embodiments of the present utility model:

[0020] Embodiment 1

[0021] like Figure 1-Figure 3As shown, the utility model provides a two-stage SBR-EGSB denitrification system quick start device, including a device box 1, an L-shaped partition plate 2 is arranged near the top of the device box 1, and the device box 1 is divided into an EGSB reaction chamber and an SBR reaction chamber by the L-shaped partition plate 2, and the EGSB reaction chamber is sequentially arranged from bottom to top with a water distributor 3, an isolation net 4, and a three-phase separator 5, and a suspension area 101 is arranged between the isolation net 4 and the three-phase separator 5, and expanded granular sludge 6 is arranged in the suspension area 101, and a sewage conduit 7 is connected to the water distributor 3, and a first water inlet is arranged at one end of the L-shaped partition plate 2 near the top wall of the device box 1, and a receiving plate 8 is arranged on the inner wall of the device box 1 near the L-shaped partition plate 2. 8. An upflow chamber is formed between the L-shaped partition plate 2 and the inner wall of the device box 1. A plurality of screw rods 9 are arranged between the receiving plate 8 and the inner top wall of the device box 1, and a first sprocket transmission mechanism box 10 is arranged on the top of the device box 1. A first motor 11 is arranged on the first sprocket transmission mechanism box 10. A baffle plate 12 is arranged in the SBR reaction chamber, and the SBR reaction chamber is divided into a pre-reaction zone 102 and a main reaction zone 103 by the baffle plate 12. A second water inlet is arranged between the bottom of the baffle plate 12 and the L-shaped partition plate 2. An aeration pipe 13 is arranged in the main reaction zone 103, and the aeration pipe 13 is connected to an external blower, and the aeration pipe 13 is located above the second water inlet. Activated sludge 14 is arranged in the main reaction zone, and a decanter is arranged on the inner side wall of the main reaction zone. A decanter 15 is provided, and an inspection port 104 is provided at a position corresponding to the decanter 15 on the top of the main reaction zone. The first sprocket transmission mechanism box 10 includes a first box body 1001, a plurality of first sprockets 1002 are arranged in the first box body 1001, the first sprockets 1002 are fixedly sleeved on the top of the spiral rod 9, and a first transmission chain 1003 is arranged on the plurality of first sprockets 1002, a plurality of first connecting columns 1004 are arranged in the first box body 1001, and a second sprocket 1005 is arranged on each of the plurality of first connecting columns 1004, and the plurality of second sprockets 1005 are symmetrically arranged on both sides of the first transmission chain 1003, and the second sprockets 1005 are meshed with the first transmission chain 1003, and one of the spiral rods 9 is connected to the first motor 11 Next, the sewage can be introduced into the EGSB reaction chamber through the sewage conduit 7 and the water distributor 3 for treatment. The sewage contacts the expanded granular sludge 6, and most of the organic matter and suspended matter are removed by the high biological activity of the expanded granular sludge 6. At the same time, the microorganisms in the EGSB reaction chamber carry out nitrification to convert ammonia nitrogen into nitrate nitrogen. The sewage treated by EGSB rises into the upflow chamber and enters the SBR reaction chamber through the first water inlet. At the same time, the spiral rod 9 in the upflow chamber can accelerate the flow rate of the sewage. The sewage entering the SBR reaction chamber is mixed with the activated sludge 14, and air oxygen is introduced through the aeration pipe 13. The remaining organic matter is removed by the metabolism of the activated sludge 14 and denitrification is carried out, thereby achieving denitrification.

[0022] Embodiment 2

[0023] like Figure 1-Figure 3 As shown, on the basis of the first embodiment of the utility model: a mud discharge pipe 16 is arranged near the bottom of the main reaction zone, a mud pump 17 connected to the mud discharge pipe 16 is arranged on the outside of the device box 1, a receiving rod 18 is arranged in the main reaction zone 103, a plurality of stirring rods 19 are arranged between the receiving rod 18 and the top wall of the main reaction zone 103, a second sprocket transmission mechanism box 20 is arranged on the top of the device box 1, a second motor 21 is arranged on the top of the second sprocket transmission mechanism box 20, the second sprocket transmission mechanism box 20 includes a second box body 2001, a plurality of third sprockets 2002 are arranged in the second box body 2001, and the third sprocket 20 02 is fixedly sleeved on the top of the stirring rod 19, and a second transmission chain 2003 is arranged on multiple third sprockets 2002, a second box body 2001 is provided with multiple second connecting columns 2004, and fourth sprockets 2005 are arranged on multiple second connecting columns 2004. Multiple fourth sprockets 2005 are symmetrically arranged on both sides of the second transmission chain 2003, and the fourth sprockets 2005 are meshed with the second transmission chain 2003. One of the stirring rods 19 is connected to the second motor 21. Through such an arrangement, the sewage can be fully contacted with the activated sludge 14 through the stirring rod 19 to achieve the best effect of microbial use.

Claims

1. Two-stage SBR-EGSB denitrification system quick start device, characterized by: The invention comprises a device box (1), wherein an L-shaped partition plate (2) is arranged near the top of the device box (1), and the device box (1) is divided into an EGSB reaction chamber and an SBR reaction chamber by the L-shaped partition plate (2); a water distributor (3), an isolation net (4), and a three-phase separator (5) are arranged in sequence from bottom to top in the EGSB reaction chamber; a suspension zone (101) is arranged between the isolation net (4) and the three-phase separator (5); expanded granular sludge (6) is arranged in the suspension zone (101); a sewage conduit (7) is connected to the water distributor (3); a first water inlet is arranged at one end of the L-shaped partition plate (2) near the top wall of the device box (1); a receiving plate (8) is arranged on the inner wall of the device box (1) near the L-shaped partition plate (2); the receiving plate (8), the L-shaped partition plate (2), and the inner wall of the device box (1) are connected to the receiving plate (8); A rising chamber is formed between the receiving plate (8) and the inner top wall of the device box (1), a plurality of screw rods (9) are arranged between the receiving plate (8) and the inner top wall of the device box (1), and a first sprocket transmission mechanism box (10) is arranged on the top of the device box (1), and a first motor (11) is arranged on the first sprocket transmission mechanism box (10), a baffle plate (12) is arranged in the SBR reaction chamber, and the SBR reaction chamber is divided into a pre-reaction zone (102) and a main reaction zone (103) by the baffle plate (12), a second water inlet is arranged between the bottom of the baffle plate (12) and the L-shaped partition plate (2), an aeration pipe (13) is arranged in the main reaction zone (103), and activated sludge (14) is arranged in the main reaction zone, a decanter (15) is arranged on the inner side wall of the main reaction zone, and an inspection port (104) is opened at a position corresponding to the decanter (15) on the top of the main reaction zone.

2. The two-stage SBR-EGSB denitrification system quick start device according to claim 1, characterized in that: The aeration pipe (13) is located above the second water inlet.

3. The two-stage SBR-EGSB denitrification system quick start device according to claim 1, characterized in that: A mud discharge pipe (16) is arranged near the bottom of the main reaction zone, and a mud pump (17) connected to the mud discharge pipe (16) is arranged outside the device box (1).

4. The two-stage SBR-EGSB denitrification system quick start device according to claim 1, characterized in that: The first sprocket transmission mechanism box (10) comprises a first box body (1001), wherein a plurality of first sprockets (1002) are arranged in the first box body (1001), wherein the first sprockets (1002) are fixedly sleeved on the top of a spiral rod (9), and a first transmission chain (1003) is arranged on the plurality of first sprockets (1002), wherein a plurality of first connecting columns (1004) are arranged in the first box body (1001), and a second sprocket (1005) is arranged on each of the plurality of first connecting columns (1004), and the plurality of second sprockets (1005) are symmetrically arranged on both sides of the first transmission chain (1003), and the second sprockets (1005) are meshed with the first transmission chain (1003), and one of the spiral rods (9) is connected to a first motor (11).

5. The two-stage SBR-EGSB denitrification system quick start device according to claim 1, characterized in that: A receiving rod (18) is arranged in the main reaction zone (103), and a plurality of stirring rods (19) are arranged between the receiving rod (18) and the top wall of the main reaction zone (103). A second sprocket transmission mechanism box (20) is arranged on the top of the device box (1), and a second motor (21) is arranged on the top of the second sprocket transmission mechanism box (20).

6. The two-stage SBR-EGSB denitrification system quick start device according to claim 5, characterized in that: The second sprocket transmission mechanism box (20) comprises a second box body (2001), a plurality of third sprockets (2002) are arranged in the second box body (2001), the third sprockets (2002) are fixedly sleeved on the top of the stirring rod (19), and a second transmission chain (2003) is arranged on the plurality of third sprockets (2002), a plurality of second connecting columns (2004) are arranged in the second box body (2001), a fourth sprocket (2005) is arranged on the plurality of second connecting columns (2004), the plurality of fourth sprockets (2005) are symmetrically arranged on both sides of the second transmission chain (2003), and the fourth sprockets (2005) are meshed with the second transmission chain (2003), and one of the stirring rods (19) is connected to the second motor (21).

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