Series intelligent sewage treatment equipment

Abstract

A series type intelligent sewage treatment equipment, including front box body and rear box body, front box body inside is provided with pre-denitrification pool, anaerobic pool, anoxic pool and first aerobic pool in proper order, pre-dennitrogenization tank side is provided with water inlet and overflow outlet, pre-denitrification pool, anaerobic pool and anoxic pool all are installed with biological filler rope and first perforated aeration pipe, first aerobic pool is installed with sponge body filler and aeration disc, the rear box body is provided with second aerobic pool, sedimentation tank, biological filter tank, clean water tank and equipment room, second aerobic pool is communicated with sedimentation tank and first aerobic pool, the second aerobic pool also is provided with sponge body filler and aeration disc, the sedimentation tank is communicated with biological filter tank, and the biological filter tank is also installed with sponge body filler, and the second perforated aeration pipe is installed at the bottom of biological filter tank, and the bottom of biological filter tank is communicated with clean water tank, the utility model makes full use of the inside and outside space of box body, compact structure, reduces the area of land occupation, is convenient for transportation and installation.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically to a series-connected intelligent sewage treatment device. Background Technology

[0002] In mountainous and hilly areas, traditional sewage treatment equipment is difficult to transport due to geographical limitations. Furthermore, during installation, the equipment is large in size, requires a large area, and necessitates a large cement foundation platform, resulting in high installation costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a series-connected intelligent sewage treatment device to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A series-connected intelligent wastewater treatment device includes a front tank and a rear tank. The front tank contains a pre-denitrification tank, an anaerobic tank, an anoxic tank, and a first aerobic tank, which are interconnected. The pre-denitrification tank has an inlet and an overflow outlet on its side. The inlet is connected to an inlet pipe, and the overflow outlet is connected to an overflow pipe. Biological packing ropes and a first perforated aeration pipe are installed in the pre-denitrification tank, the anaerobic tank, and the anoxic tank. The first aerobic tank contains sponge packing material and aeration discs. The rear tank contains a second aerobic tank, a sedimentation tank, a biological filter, a clear water tank, and an equipment room. The second aerobic tank has an aerobic tank outlet at its upper end that connects to the sedimentation tank. The side of the second aerobic tank is connected to the first aerobic tank via a connecting pipe. The second aerobic tank is also equipped with sponge packing material and aeration discs. An overflow weir is installed above the sedimentation tank, and a drain outlet is provided on the side of the overflow weir. The drain outlet is connected to the biological filter. The biological filter is also equipped with sponge packing material. A second perforated aeration pipe is installed at the bottom of the biological filter, and the bottom of the biological filter is connected to the clear water tank. A drain pipe is installed above the clear water tank. An aeration pump is installed in the equipment room, and the aeration pump is connected to the first perforated aeration pipe, the second perforated aeration pipe, and the aeration discs via an aeration connecting pipe.

[0005] Furthermore, the pre-denitrification tank, anaerobic tank, and anoxic tank are equipped with supports, and biological packing ropes are installed on the supports.

[0006] Furthermore, an intercepting mesh shell is installed at the outlet of the second aerobic tank, and a first submersible sewage pump is installed in the area enclosed by the intercepting mesh shell and the second aerobic tank. The first submersible sewage pump is connected to the anoxic tank through a first sewage pipe.

[0007] Furthermore, a second submersible sewage pump and a third submersible sewage pump are installed in the sedimentation tank. The second submersible sewage pump is connected to the pre-denitrification tank through a second sewage pipe, and the third submersible sewage pump is connected to the outside of the sedimentation tank through a third sewage pipe.

[0008] Furthermore, the biological filter is equipped with two layers of netting, and the sponge packing material in the biological filter is placed between the two layers of netting.

[0009] Furthermore, a fourth submersible sewage pump is installed above the barrier net, and the fourth submersible sewage pump is connected to the outside of the biological filter through a fourth sewage pipe.

[0010] Furthermore, an interceptor plate is installed at the inlet of the overflow weir.

[0011] Furthermore, a dosing tank is installed in the equipment room, and a dosing pump is installed above the dosing tank. The dosing tank is connected to the dosing pump via a hose, and the dosing pump is connected to the area enclosed by the intercepting mesh shell and the second aerobic tank via a dosing pump connecting pipe.

[0012] Furthermore, an ultraviolet sterilizer is installed in the equipment room, and the drain pipe above the clear water tank is connected to the ultraviolet sterilizer.

[0013] Furthermore, manholes are provided on the surfaces of the front and rear boxes, and a ladder connects the front and rear boxes.

[0014] Compared with existing technologies, the series-connected intelligent sewage treatment equipment of this utility model makes full use of the internal and external space of the box, has a compact structure, reduces the footprint, and achieves the effect of easy transportation and flexible adaptation to the customer's civil engineering layout. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the front housing of this utility model; Figure 3 yes Figure 2 Sectional view at point AA; Figure 4 yes Figure 2 Sectional view at point BB; Figure 5 This is a structural schematic diagram of the rear box of this utility model; Figure 6 yes Figure 3 Sectional view at CC; Figure 7 yes Figure 3 Sectional view at point DD; Figure 8 yes Figure 3 Sectional view at EE; The components are as follows: 1. Front tank; 2. Rear tank; 3. Steps; 4. Pre-denitrification tank; 5. Anaerobic tank; 6. First anoxic tank; 7. Second anoxic tank; 8. First aerobic tank; 9. Inlet; 10. Overflow outlet; 11. Inlet pipe; 12. Overflow pipe; 13. Biological packing rope; 14. First perforated aeration pipe; 15. Sponge packing material; 16. Aeration disc; 17. Support frame; 18. Aeration pipe support frame; 19. Aeration disc air inlet pipe; 20. Second aerobic tank; 21. Sedimentation tank; 22. Biological filter; 23. Clear water tank; 24. Equipment room. 5. Connecting pipe; 26. Interception mesh shell; 27. Overflow weir; 28. Interception plate; 29. ​​Second perforated aeration pipe; 30. Barrier mesh; 31. Drainage pipe; 32. Aeration pump; 33. Aeration connecting pipe; 34. Ultraviolet sterilizer; 35. Dosing tank; 36. Dosing pump; 37. Air supply pipe; 38. Dosing pump connecting pipe; 39. First submersible sewage pump; 40. First sewage pipe; 41. Second submersible sewage pump; 42. Third submersible sewage pump; 43. Second sewage pipe; 44. Third sewage pipe; 45. Fourth submersible sewage pump; 46. Fourth sewage pipe; 47. Manhole. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below.

[0017] like Figures 1-6 As shown, a series-connected intelligent wastewater treatment device includes a front chamber 1 and a rear chamber 2, which are connected by a staircase 3. The front chamber 1 contains a pre-denitrification tank 4, an anaerobic tank 5, a first anoxic tank 6, a second anoxic tank 7, and a first aerobic tank 8 arranged sequentially. The pre-denitrification tank 4, anaerobic tank 5, first anoxic tank 6, second anoxic tank 7, and first aerobic tank 8 are interconnected. The bottom side of the pre-denitrification tank 4 is provided with a water passage hole that connects to the anaerobic tank 5. The top side of the anaerobic tank 5 is provided with a water passage hole that connects to the first anoxic tank 6. The bottom side of the first anoxic tank 6 is provided with a water passage hole that connects to the second anoxic tank 7. The side of the second anoxic tank 7 is provided with a water passage hole that connects to the first aerobic tank 8.

[0018] The pre-denitrification tank 4 is provided with an inlet 9 and an overflow outlet 10 on its side. The inlet 9 is connected to an inlet pipe 11, which injects raw water into the pre-denitrification tank 4 from top to bottom. The overflow outlet 10 is connected to an overflow pipe 12, with the inlet of the overflow pipe 12 located above the pre-denitrification tank 4. The overflow pipe 12 discharges excess water from the pre-denitrification tank 4. Biological packing ropes 13 and first perforated aeration pipes 14 are installed in the pre-denitrification tank 4, the anaerobic tank 5, the first anoxic tank 6, and the second anoxic tank 7. Sponge packing material 15 and aeration discs 16 are installed in the first aerobic tank 8.

[0019] The pre-denitrification tank 4, anaerobic tank 5, first anoxic tank 6, and second anoxic tank 7 are equipped with supports 17. Ropes for suspending biological packing ropes 13 are connected between the supports 17. The two ends of the biological packing ropes 13 are tied to the ropes. The first perforated aeration pipe 14 is evenly laid at the bottom of the pre-denitrification tank 4, anaerobic tank 5, first anoxic tank 6, and second anoxic tank 7 through aeration pipe supports 18. The first perforated aeration pipe provides intermittent aeration, which makes it easier for the bacteria to attach to the biological packing ropes 13. The sponge packing material 15 is composed of several small sponges and is stacked on the aeration disc 16. The aeration disc 16 is connected to the bottom of the aeration disc air inlet pipe 19. The aeration disc 16 continuously aerates to provide oxygen to the first aerobic tank 8.

[0020] The rear chamber 2 houses a second aerobic tank 20, a sedimentation tank 21, a biological filter 22, a clear water tank 23, and an equipment room 24. The second aerobic tank 20 has an outlet on its upper side that connects to the sedimentation tank 21. The other side of the second aerobic tank 20 is connected to the first aerobic tank 8 in the front chamber 1 via a connecting pipe 25. A mesh cover is installed at the inlet of the connecting pipe 25 to block the sponge packing material. The second aerobic tank 20 also contains sponge packing material 15 and aeration discs 16. An intercepting mesh shell 26 is installed at the outlet of the aerobic tank to block the sponge packing material in the second aerobic tank 20, while the aeration discs 16 continuously aerate, providing oxygen to the second aerobic tank 20. The biological filter 22 and clear water tank 23 are located on the side of the sedimentation tank 21. An L-shaped overflow is installed above the sedimentation tank 21. The overflow weir 27 is connected to the biological filter 22 at its end, and a drain outlet is provided on its side, which is connected to the biological filter 22. An interceptor plate 28 is provided at the inlet of the overflow weir 27. The interceptor plate 28 is installed at an outward angle to block floating objects in the sedimentation tank 21. The biological filter 22 is also equipped with sponge packing. A second perforated aeration pipe 29 is installed at the bottom of the biological filter 22, and the bottom of the biological filter 22 is connected to the clear water tank 23. The biological filter 22 is equipped with two layers of netting 30, and the sponge packing in the biological filter 22 is placed between the two layers of netting 30. The second perforated aeration pipe 29 is laid at the bottom of the biological filter 22 through an aeration pipe support. The second perforated aeration pipe 29 aerates during backwashing. A drain pipe 31 is installed above the clear water tank 23 to discharge the treated water.

[0021] An aeration pump 32 is installed in the equipment room 24. An aeration connecting pipe 33 is connected to the aeration pump 32. The aeration connecting pipe 33 includes multiple branch pipes, which are arranged along the top of the tank and connected to the first perforated aeration pipe 14, the second perforated aeration pipe 29, and the aeration disc 16, respectively. An ultraviolet sterilizer 34 is installed in the equipment room 24. A drain pipe 31 above the clear water tank 23 is connected to the ultraviolet sterilizer 34. The ultraviolet sterilizer 34 sterilizes the treated water before discharging it. A chemical dosing tank 35 is installed in the equipment room 24, and a chemical dosing device is installed above the chemical dosing tank 35. The dosing pump 36 and the dosing tank 35 are connected to the dosing pump 36 via a hose. At the same time, the aeration connection pipe 33 of the dosing tank 35 is equipped with an air supply pipe 37 connected to the dosing tank 35. The air supply pipe 37 is controlled by a separate valve to inject an appropriate amount of gas into the dosing tank 35 and stir the chemicals in the dosing tank. The dosing pump 36 is connected to the area enclosed by the intercepting mesh shell 26 and the second aerobic tank 20 via the dosing pump connection pipe 38. Chemicals are added to this area to cause the upper water to flocculate. Then, the water is discharged into the sedimentation tank 21 through the aerobic tank outlet, where the flocculent material settles.

[0022] A first submersible sewage pump 39 is installed in the area enclosed by the intercepting net shell 26 and the second aerobic tank 20. The first submersible sewage pump 39 is connected to the first anoxic tank 6 through the first sewage pipe 40. A second submersible sewage pump 41 and a third submersible sewage pump 42 are installed in the sedimentation tank 21. The second submersible sewage pump 41 is connected to the pre-denitrification tank 4 through the second sewage pipe 43. The third submersible sewage pump 42 is connected to the outside of the sedimentation tank 21 through the third sewage pipe 44. A fourth submersible sewage pump 45 is installed above the net 30. The fourth submersible sewage pump 45 is connected to the outside of the biological filter tank 22 through the fourth sewage pipe 46.

[0023] Manholes 47 are provided on the surfaces of the front box 1 and the rear box 2. After the manholes 47 are opened, the operation of each pool can be observed.

[0024] When the equipment is working, raw water enters the pre-denitrification tank 4 and anaerobic tank 5 through inlet 9. In the pre-denitrification tank 4 and anaerobic tank 5, the raw water releases phosphorus and simultaneously ammonifies some organic matter. Then it enters the first anoxic tank 6 and the second anoxic tank 7, where the raw water undergoes denitrification. Then it enters the first aerobic tank 8 and the second aerobic tank 20, where the raw water undergoes nitrification and phosphorus absorption. Next, the raw water enters the sedimentation tank 21 for mud-water separation, and then enters the biological filter 22, where the raw water undergoes further nitrification. The biological filter 22 is connected to the bottom of the clear water tank 23. The supernatant in the clear water tank 23 is disinfected and sterilized by the ultraviolet disinfection equipment in the equipment room 24 before being discharged as treated water.

[0025] During sludge return, the second submersible pump 41 in the sedimentation tank 21 draws the sludge-water mixture into the pre-denitrification tank 4, keeping the concentration of suspended solids in the mixed liquor in the upstream aeration tank stable, ensuring sufficient microbial quantity for efficient degradation of organic matter, and sludge return can adjust sludge age and prevent sludge aging or over-proliferation.

[0026] When the nitrified liquid is returned, the first submersible pump 39 in the second aerobic tank 20 draws the semi-treated raw water into the first anoxic tank 6. In this part of the semi-treated raw water, nitrate ammonia can act as an electron acceptor and be reduced to nitrogen gas and discharged in anoxic environment. It can also reduce the addition of external carbon sources and reduce the aeration volume.

[0027] This utility model is not limited to the embodiments described. Those skilled in the art can still make some modifications or changes without departing from the spirit and scope of this utility model. Therefore, the scope of protection of this utility model shall be determined by the scope defined in the claims.

Claims

1. A series-connected intelligent wastewater treatment device, characterized in that: The system comprises a front chamber and a rear chamber. The front chamber contains, sequentially, a pre-denitrification tank, an anaerobic tank, an anoxic tank, and a first aerobic tank, all interconnected. The pre-denitrification tank has an inlet and an overflow outlet on its side; the inlet is connected to an inlet pipe, and the overflow outlet is connected to an overflow pipe. Biological packing ropes and first perforated aeration pipes are installed in the pre-denitrification tank, anaerobic tank, and anoxic tank. The first aerobic tank contains sponge packing material and aeration discs. The rear chamber contains a second aerobic tank, a sedimentation tank, a biological filter, a clear water tank, and an equipment room. The upper part of the second aerobic tank... The aerobic tank outlet is connected to the sedimentation tank. The second aerobic tank is connected to the first aerobic tank via a connecting pipe. The second aerobic tank is also equipped with sponge packing and aeration discs. An overflow weir is installed above the sedimentation tank, and a drain outlet is provided on the side of the overflow weir. The drain outlet is connected to the biological filter. The biological filter is also equipped with sponge packing. A second perforated aeration pipe is installed at the bottom of the biological filter, and the bottom of the biological filter is connected to the clear water tank. A drain pipe is installed above the clear water tank. An aeration pump is installed in the equipment room, and the aeration pump is connected to the first perforated aeration pipe, the second perforated aeration pipe, and the aeration discs via an aeration connecting pipe.

2. The series-connected intelligent sewage treatment equipment according to claim 1, characterized in that: The pre-denitrification tank, anaerobic tank, and anoxic tank are equipped with supports, and biological packing ropes are installed on the supports.

3. The series-connected intelligent sewage treatment equipment according to claim 1, characterized in that: An intercepting mesh shell is installed at the outlet of the second aerobic tank. A first submersible sewage pump is installed in the area enclosed by the intercepting mesh shell and the second aerobic tank. The first submersible sewage pump is connected to the anoxic tank through a first sewage pipe.

4. The series-connected intelligent sewage treatment equipment according to claim 1, characterized in that: The sedimentation tank is equipped with a second submersible sewage pump and a third submersible sewage pump. The second submersible sewage pump is connected to the pre-denitrification tank through a second sewage pipe, and the third submersible sewage pump is connected to the outside of the sedimentation tank through a third sewage pipe.

5. A series-connected intelligent wastewater treatment device according to claim 1, characterized in that: The biological filter is equipped with two layers of netting, and the sponge packing material in the biological filter is placed between the two layers of netting.

6. The series-connected intelligent sewage treatment equipment according to claim 5, characterized in that: A fourth submersible sewage pump is installed above the barrier net, and the fourth submersible sewage pump is connected to the outside of the biological filter through a fourth sewage pipe.

7. The series-connected intelligent sewage treatment equipment according to claim 1, characterized in that: An interceptor plate is installed at the inlet of the overflow weir.

8. A series-connected intelligent wastewater treatment device according to claim 3, characterized in that: The equipment room is equipped with a dosing tank, and a dosing pump is installed above the dosing tank. The dosing tank is connected to the dosing pump via a hose, and the dosing pump is connected to the area enclosed by the intercepting mesh shell and the second aerobic tank via a dosing pump connecting pipe.

9. A series-connected intelligent wastewater treatment device according to claim 1, characterized in that: An ultraviolet sterilizer is installed in the equipment room, and the drain pipe above the clear water tank is connected to the ultraviolet sterilizer.

10. A series-connected intelligent wastewater treatment device according to claim 1, characterized in that: Manholes are provided on the surfaces of the front and rear boxes, and a ladder connects the front and rear boxes.

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