UASB anaerobic tower jet water inlet device

Abstract

The utility model discloses a UASB anaerobic tower jet flow water inlet device in the field of sewage treatment system, the bottom of UASB anaerobic tower is provided with water distribution pipe, and the upper portion of UASB anaerobic tower is connected with the backflow sludge water pipe, the one end of water distribution pipe that stretches out UASB anaerobic tower is connected with water inlet total valve, and the outlet of hydrolytic acidification pool is connected with wastewater water inlet pipe, and jet flow water inlet ware includes main pipeline, and the side of main pipeline is connected with bypass pipe, and the in-pipe is inserted into main pipeline with the same shaft, and the outer periphery between the outer end inner wall of in-pipe outward one end is equipped with annular head no.1, and the inward one end of in-pipe is provided with the reducing head, and the reducing head is correspondingly arranged with bypass pipe, the end of bypass pipe is connected with wastewater water inlet pipe, and the outward one end of in-pipe is connected with backflow sludge water pipe. The utility model can realize the effective regulation of the water inflow of anaerobic tower, and ensure that the water inflow pipe of anaerobic tower can be watered.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment systems, and specifically relates to a UASB anaerobic tower jet inlet device. Background Technology

[0002] Currently, most factories use low-head, large-flow-channel, and low-power wastewater lift pumps in their wastewater treatment systems to reduce the operating costs of the wastewater treatment process. The UASB anaerobic digester contains sludge in both the treated water and the return water, and a constant temperature must be maintained. Therefore, a steam heater needs to be installed on the pipes of the treated water in the UASB anaerobic digester. This leads to increased pipe resistance, and the influent flow rate is small and the flow velocity is slow. As a result, the influent pipes of the anaerobic digester often fail to receive water. Utility Model Content

[0003] The purpose of this invention is to provide a jet water inlet device for a UASB anaerobic tower, which can effectively regulate the inlet flow rate of the anaerobic tower and ensure that the inlet pipe of the anaerobic tower can receive water.

[0004] The purpose of this utility model is achieved as follows: A UASB anaerobic tower jet inlet device includes a UASB anaerobic tower and a hydrolysis acidification tank corresponding to each other. The bottom of the UASB anaerobic tower is provided with an inlet distribution pipe, and the upper part of the UASB anaerobic tower is connected to a return sludge water pipe. One end of the inlet distribution pipe extending out of the UASB anaerobic tower is connected to an inlet main valve. The outlet of the hydrolysis acidification tank is connected to a wastewater inlet pipe. A jet inlet device is provided corresponding to the wastewater inlet pipe and the return sludge water pipe. The jet inlet includes a main pipe with a bypass pipe connected to its side. An inner pipe is coaxially inserted into the main pipe, with the outer diameter of the inner pipe being smaller than the inner diameter of the main pipe. An annular end cap is provided between the outer periphery of the outer end of the inner pipe and the inner wall of the outer end of the main pipe. A diameter reduction head is provided at the inner end of the inner pipe, which is correspondingly provided with the bypass pipe. The end of the bypass pipe is connected to the wastewater inlet pipe. The outer end of the inner pipe is connected to the return sludge pipe. The other end of the main pipe is connected to the main inlet valve.

[0005] This invention features a jet inlet device installed before the bottom inlet distribution pipe of the anaerobic digester. The jet inlet device consists of a main pipe, a bypass pipe, and an inner pipe. It allows the wastewater to be treated from the hydrolysis acidification tank to enter the bottom inlet distribution pipe of the anaerobic digester along with the return wastewater from the anaerobic digester. The wastewater lift pump from the hydrolysis acidification tank is connected in series with the jet inlet device, achieving effective regulation of the inlet flow rate and saving energy. Compared with existing technologies, the advantages of this invention are: the design and installation of the inlet pipe for UASB anaerobic digesters used in wastewater treatment achieves effective regulation of the inlet flow rate; it prevents clogging and ensures effective regulation of the inlet flow rate; and it eliminates the need to increase the head and power of the lift pump, making it more economical and environmentally friendly.

[0006] As a further improvement of this utility model, the main pipe is a DN 125mm pipe, and both the bypass pipe and the inner pipe are DN 80mm pipes. The diameter of the reducing head near the inner pipe is 80mm, and the diameter of the other end of the reducing head is 60mm. The jet inlet device meets the operational requirements, and the water inlet work of the anaerobic tower is completed by the jetting force of the return water from the anaerobic tower and the driving force of the wastewater lift pump of the hydrolysis acidification tank.

[0007] As a further improvement of this utility model, the wastewater inlet pipe is a DN 80mm pipe, and the water flow rate in the wastewater inlet pipe is 2-8m³ / h. 3 / h, the return sludge water pipe is a DN 80mm pipe, and the water flow rate in the return sludge water pipe is 25-40m³ / h. 3 / h, the inlet water distribution pipe is a DN 125mm pipe.

[0008] As a further improvement of this utility model, the return sludge water pipe is equipped with, from front to back, a pump inlet valve one, an anaerobic tower sludge return pump, and a pump outlet valve one. The wastewater inlet pipe is equipped with, from front to back, a pump inlet valve two, an acidification tank wastewater lift pump, a pump outlet valve two, and a steam heater. An inlet valve is connected to one end of the wastewater inlet pipe, and the other end of the inlet valve is connected to a bypass pipe. The anaerobic tower sludge return pump and the acidification tank wastewater lift pump provide the flow power for the return sludge water and wastewater, respectively. The steam heater is a heat exchanger that transfers the heat of the steam to the wastewater inlet pipe through heat exchange tubes, completing the heat exchange.

[0009] As a further improvement of this utility model, the head of the anaerobic tower sludge return pump and the acidification tank wastewater lift pump is 15m.

[0010] As a further improvement of this utility model, the UASB anaerobic tower is set on the ground, and the bottom of the hydrolysis acidification tank is embedded in a pit for 2m. Attached Figure Description

[0011] Figure 1This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0013] Figure 3 This is a schematic diagram of the diameter reduction head.

[0014] The components include: 1. UASB anaerobic tower, 2. hydrolysis acidification tank, 3. inlet distribution pipe, 4. return sludge water pipe, 5. main inlet valve, 6. jet inlet device, 601. main pipeline, 602. bypass pipe, 603. internal pipeline, 7. end cap 1, 8. reducer, 9. pump inlet valve 1, 10. anaerobic tower sludge return pump, 11. pump outlet valve 1, 12. pump inlet valve 2, 13. acidification tank wastewater lift pump, 14. pump outlet valve 2, 15. steam heater, 16. inlet valve, and 17. wastewater inlet pipe. Detailed Implementation

[0015] like Figure 1-3 The diagram shows a UASB anaerobic digester jet inlet device, comprising a corresponding UASB anaerobic digester 1 and a hydrolysis acidification tank 2. The UASB anaerobic digester 1 is installed on the ground, and the bottom of the hydrolysis acidification tank 2 is embedded 2m into a pit. An inlet distribution pipe 3 is installed at the bottom of the UASB anaerobic digester 1, and a return sludge water pipe 4 is connected to the upper part of the UASB anaerobic digester 1. One end of the inlet distribution pipe 3 extending out of the UASB anaerobic digester 1 is connected to an inlet main valve 5. The outlet of the hydrolysis acidification tank 2 is connected to a wastewater inlet pipe 17. A jet inlet device 6 is installed corresponding to the wastewater inlet pipe 17 and the return sludge water pipe 4. 6 includes a main pipe 601, a bypass pipe 602 connected to the side of the main pipe 601, and an inner pipe 603 coaxially inserted into the main pipe 601. The outer diameter of the inner pipe 603 is smaller than the inner diameter of the main pipe 601. An annular end cap 7 is provided between the outer periphery of the outer end of the inner pipe 603 and the inner wall of the outer end of the main pipe 601. A reducing head 8 is provided at the inner end of the inner pipe 603, which is correspondingly provided with the bypass pipe 602. The end of the bypass pipe 602 is connected to the wastewater inlet pipe 17. The outer end of the inner pipe 603 is connected to the return sludge water pipe 4. The other end of the main pipe 601 is connected to the main inlet valve 5.

[0016] The main pipe 601 is a DN 125mm pipe, while the bypass pipe 602 and the inner pipe 603 are both DN 80mm pipes. The diameter of the reducer 8 near the inner pipe 603 is 80mm, and the diameter of the other end of the reducer 8 is 60mm. The jet inlet device meets operational requirements, utilizing the ejection force of the anaerobic tower's return water and the driving force of the wastewater lift pump in the hydrolysis acidification tank 2 to complete the inlet operation of the anaerobic tower. The wastewater inlet pipe 17 is a DN 80mm pipe, and the water flow rate within it is 2-8 m³ / h. 3 / h, the return sludge water pipe 4 is a DN 80mm pipe, and the water flow rate in the return sludge water pipe 4 is 25-40m³ / h. 3 / h, the inlet distribution pipe 3 is a DN 125mm pipe.

[0017] The sludge return pipe 4 is equipped with, from front to back, a pump inlet valve 9, an anaerobic tower sludge return pump 10, and a pump outlet valve 11. The wastewater inlet pipe 17 is equipped with, from front to back, a pump inlet valve 12, an acidification tank wastewater lift pump 13, a pump outlet valve 14, and a steam heater 15. An inlet valve 16 is connected to one end of the wastewater inlet pipe 17, and the other end of the inlet valve 16 is connected to a bypass pipe 602. The anaerobic tower sludge return pump 10 and the acidification tank wastewater lift pump 13 provide the flow power for the sludge return water and wastewater, respectively. The steam heater 15 is a heat exchanger that transfers the heat of the steam to the wastewater inlet pipe 17 through heat exchange tubes, completing the heat exchange. The head of both the anaerobic tower sludge return pump 10 and the acidification tank wastewater lift pump 13 is 15m.

[0018] This invention features a jet inlet device installed before the bottom inlet distribution pipe 3 of the anaerobic tower. The jet inlet device consists of a main pipe 601, a bypass pipe 602, and an inner pipe 603. This allows the wastewater to be treated from the hydrolysis acidification tank 2 to enter the bottom inlet distribution pipe 3 of the anaerobic tower along with the return wastewater from the anaerobic tower. The wastewater booster pump from the hydrolysis acidification tank 2 is connected in series with the jet inlet device, achieving effective regulation of the inlet flow rate and saving energy. The advantages of this invention are: the design and installation of the inlet pipe for the UASB anaerobic tower 1 used for wastewater treatment; effective regulation of the inlet flow rate of the UASB anaerobic tower 1 using the jet inlet device; effective regulation of the inlet flow rate of the anaerobic tower without clogging; and no need to increase the head and power of the booster pump, making it more economical and environmentally friendly.

[0019] This utility model discloses a jet inlet device for the UASB anaerobic tower 1. A jet inlet device is installed before the inlet distribution pipe 3 at the bottom of the anaerobic tower. This allows the wastewater to be treated in the hydrolysis acidification tank 2 to enter the inlet distribution pipe 3 at the bottom of the anaerobic tower together with the sludge-containing wastewater returning from the UASB anaerobic tower 1 under the jetting action. This device effectively solves the problem that the large pipe resistance before the wastewater from the hydrolysis acidification tank 2 enters the anaerobic tower, and the high specific gravity of the sludge-containing wastewater, leads to insufficient head of the booster pump and prevents the anaerobic tower from receiving water. It eliminates the need to increase the power of the booster pump, fully utilizes the jetting power of the sludge-containing wastewater returning from the anaerobic tower, achieves effective regulation of the inlet flow rate, and saves electricity and energy.

[0020] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A UASB anaerobic tower jet inlet device, comprising a UASB anaerobic tower and a hydrolysis acidification tank corresponding to each other, wherein an inlet distribution pipe is provided at the bottom of the UASB anaerobic tower, and a return sludge water pipe is connected to the upper part of the UASB anaerobic tower, characterized in that, One end of the inlet distribution pipe extending out of the UASB anaerobic tower is connected to the main inlet valve. The outlet of the hydrolysis acidification tank is connected to the wastewater inlet pipe. A jet inlet device is provided corresponding to the wastewater inlet pipe and the return sludge pipe. The jet inlet device includes a main pipe, a bypass pipe connected to the side of the main pipe, and an inner pipe coaxially inserted into the main pipe. The outer diameter of the inner pipe is smaller than the inner diameter of the main pipe. An annular end cap is provided between the outer circumference of the outer end of the inner pipe and the inner wall of the outer end of the main pipe. A diameter reduction head is provided at the inner end of the inner pipe, which is correspondingly provided with the bypass pipe. The end of the bypass pipe is connected to the wastewater inlet pipe. The outer end of the inner pipe is connected to the return sludge pipe. The other end of the main pipe is connected to the main inlet valve.

2. The UASB anaerobic tower jet inlet device according to claim 1, characterized in that, The main pipe is a DN125mm pipe, and the bypass pipe and the inner pipe are both DN80mm pipes. The diameter of the reducing head is 80mm at one end near the inner pipe and 60mm at the other end.

3. A UASB anaerobic tower jet inlet device according to claim 1 or 2, characterized in that, The wastewater inlet pipe is a DN 80mm pipe, and the water flow rate in the wastewater inlet pipe is 2-8m³ / h. 3 / h, the return sludge water pipe is a DN 80mm pipe, and the water flow rate in the return sludge water pipe is 25-40m³ / h. 3 / h, the inlet water distribution pipe is a DN 125mm pipe.

4. A UASB anaerobic tower jet inlet device according to claim 1 or 2, characterized in that, The return sludge pipe is equipped with, from front to back, a pump inlet valve 1, an anaerobic tower sludge return pump, and a pump outlet valve 1. The wastewater inlet pipe is equipped with, from front to back, a pump inlet valve 2, an acidification tank wastewater lift pump, a pump outlet valve 2, and a steam heater. The wastewater inlet pipe is connected to an inlet valve at one end, and the other end of the inlet valve is connected to a bypass pipe.

5. A UASB anaerobic tower jet inlet device according to claim 4, characterized in that, The head of both the anaerobic tower sludge return pump and the acidification tank wastewater lift pump is 15m.

6. A UASB anaerobic tower jet inlet device according to claim 1 or 2, characterized in that, The UASB anaerobic tower is located on the ground, and the bottom of the hydrolysis acidification tank is embedded 2m into a pit.

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