Novel UASB (Upflow Anaerobic Sludge Blanket) anaerobic granular sludge biochemical treatment device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a novel UASB (Upflow Anaerobic Sludge Blanket) anaerobic granular sludge biochemical treatment device. A novel UASB anaerobic granular sludge biochemical treatment device comprises a water distribution system, a mixed liquid backflow system and a biological filler system, the water distribution system adopts a central guide cylinder and a guide conical groove, so that water distribution is uniform and stable, and meanwhile, the problem that a pipeline is blocked by sludge does not exist; the mixed reflux system adopts a fixed variable-frequency submersible stirrer, so that the flow is large, energy is greatly saved compared with traditional water pump circulation, the reflux quantity of mixed liquid and the water inlet proportion of waste water can be adjusted in a variable-frequency mode, the ascending velocity of the mixed liquid is automatically and accurately controlled and adjusted through an electromagnetic flowmeter, and finally the ascending velocity is adjusted to the optimal technological parameter.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, and more specifically to a novel UASB anaerobic granular sludge biochemical treatment device. Background Art

[0002] With the rapid development of urbanization and industrialization, water pollution has become one of the important problems in our society. The pressure of urban garbage disposal is increasing, the water pollution problem is serious, and the impact on residents' lives is becoming more and more prominent. The attention of all sectors of society is gradually increasing, and the awareness of environmental protection is also increasing. In order to eliminate water pollution and protect the environment, a large number of sewage treatment plants have been built and put into use. But the problem that comes with it is that a large amount of residual sludge is generated. High-concentration COD wastewater is characterized by high suspended matter content, high chroma, odor, high organic matter concentration, complex water composition, and difficulty in biodegradation. It is very difficult to treat. It is difficult to meet the technical and economic requirements of high-concentration organic wastewater purification and treatment using general wastewater treatment methods.

[0003] The traditional UASB anaerobic biochemical treatment device uses general anaerobic biochemical sludge, but during operation, there may be many problems such as blockage of water distribution pipes or mixed liquid return pipes, serious sludge leakage in the effluent, and poor COD degradation effect.

[0004] Therefore, it is an urgent problem for technicians in this field to provide a new UASB anaerobic granular sludge biochemical treatment device that reduces the blockage of the backflow pipe, has a good sewage degradation effect, and does not cause sludge to escape from the water. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a novel UASB anaerobic granular sludge biochemical treatment device with good degradation effect of sludge concentration COD, uniform and stable water distribution, and no blockage of the return pipe.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions, which mainly include:

[0007] A novel UASB anaerobic granular sludge biochemical treatment device includes a comprehensive regulating tank, a wastewater inlet pipe, a heating system, a central guide tube, a mixed reflux system, a UASB tank, a biological filler system, a mud outlet, a manhole, a wastewater outlet pipe, a guide cone trough, an outlet overflow trough and a UASB conical top cover. The comprehensive regulating tank is connected to the central guide tube through the wastewater inlet pipe through the side wall of the UASB tank, and the other side of the central guide tube is connected to the mixed reflux system. The mixed reflux system runs through the side wall of the UASB tank and The heating system is connected, the other side of the mixing reflux system penetrates the side wall of the UASB tank and is connected to the UASB tank, a biological filler system is arranged above the mixing reflux system, a water outlet overflow groove is arranged above the biological filler system, the water outlet overflow groove is connected to the wastewater outlet pipe, a guide cone groove is arranged between the central guide tube and the bottom of the UASB tank, an inspection hole is opened at the bottom of one side of the UASB tank, a mud discharge port is opened at the bottom of the other side of the UASB tank, and a UASB cone cover is arranged on the top of the UASB tank.

[0008] Preferably, the mixed reflux system includes a mixed liquid circulation pipeline, a third valve, a submersible mixer, a temperature transmitter, a pH meter, a liquid alkali dosing device, a fourth valve, a No. 2 electromagnetic flowmeter, a fifth valve and a water collecting bell mouth, the mixed liquid circulation pipeline is a "U"-shaped pipeline, the central guide tube of the mixed liquid circulation pipeline is connected to the mixed liquid circulation pipeline, and a water collecting bell mouth is installed at the outlet on the other side of the mixed liquid circulation pipeline. The mixed liquid circulation pipeline is sequentially installed with the fifth valve, the liquid alkali dosing device, the No. 2 electromagnetic flowmeter, the pH meter, the temperature transmitter, the submersible mixer and the third valve from top to bottom, the submersible mixer is installed inside the mixed liquid circulation pipeline, a fourth valve is provided between the liquid alkali dosing device and the mixed liquid circulation pipeline, and a heating system is installed on the mixed liquid circulation pipeline.

[0009] Preferably, the heating system includes a steam inlet valve, a pipeline water vapor mixing heater and a heating pipeline. The two sides of the heating pipeline are connected to the pipelines on both sides of the mixed liquid circulation pipeline. A pipeline water vapor mixing heater is installed on the heating pipeline. The air inlet pipeline of the pipeline water vapor mixing heater is preferably provided with a steam inlet valve.

[0010] Preferably, the biological filler system includes a bottom bracket, a filling port, columns, a biological filler layer and a top bracket, the bottom bracket is installed above the mixed liquid circulation pipeline, the top bracket is installed below the water outlet overflow trough, a biological filler layer is provided between the bottom bracket and the top bracket, a filling port is opened on one side of the biological filler layer, and a plurality of columns are provided between the top bracket and the bottom of the UASB tank body.

[0011] Preferably, a first valve, a water inlet booster pump, a No. 1 electromagnetic flowmeter and a second valve are sequentially provided on the wastewater inlet pipe connecting the comprehensive regulating tank and the UASB tank body.

[0012] Preferably, the submersible mixer is a pipeline variable frequency submersible mixer.

[0013] Preferably, a guardrail is installed on the top of the UASB tank.

[0014] Preferably, the UASB conical top cover is provided with an observation hole.

[0015] It can be seen from the above technical solutions that compared with the prior art, the utility model is suitable for the treatment of high-concentration COD wastewater. The core of this device includes a water distribution system, a mixed liquor reflux system and a biological filler system. The water distribution system adopts a central guide tube and a guide cone trough, which can ensure uniform and stable water distribution without the problem of sludge blocking the pipeline; the mixed reflux system adopts a fixed variable frequency submersible mixer, which not only has a large flow rate and is much more energy-saving than the traditional water pump cycle, but also can adjust the mixed liquor reflux volume and the wastewater inlet ratio with variable frequency, and automatically and accurately control and adjust the mixed liquor rising flow rate through the electromagnetic flowmeter, and finally adjust the rising flow rate to the optimal process parameters; the biological filler system is conducive to the contact between microorganisms and mud and water, greatly improving the anaerobic biochemical treatment efficiency, and the cut-off / reflux effect of the biological filler layer is more conducive to the formation of granular sludge and effectively alleviates the situation of sludge in the effluent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Explanation of reference numerals: 1-comprehensive regulating tank, 2-first valve, 3-inlet lifting pump, 4-wastewater inlet pipeline, 5-No. 1 electromagnetic flowmeter, 6-second valve, 7-conical guide groove, 8-mud outlet, 9-manhole, 10-UASB tank, 11-column, 12-central guide tube, 13-mixed liquid circulation pipeline, 14-third valve, 15-submersible mixer, 16-temperature transmitter, 17-pH meter, 18-liquid Alkali dosing device, 19-the fourth valve, 20-No. 2 electromagnetic flowmeter, 21-steam inlet valve, 22-pipeline water-steam mixing heater, 23-heating pipeline, 24-fifth valve, 25-water collecting bell mouth, 26-bottom bracket, 27-filling port, 28-biological filler layer, 29-top bracket, 30-wastewater outlet pipe, 31-outlet overflow trough, 32-UASB conical top cover, 33-guardrail, 34-observation hole. DETAILED DESCRIPTION

[0019] 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 without creative work are within the scope of protection of the utility model.

[0020] Example

[0021] A new type of UASB anaerobic granular sludge biochemical treatment device, such as Figure 1 As shown, it includes a comprehensive regulating tank 1, a wastewater inlet pipe 4, a heating system, a central guide tube 12, a mixing reflux system, a UASB tank body 10, a biological filler system, a mud outlet 8, a manhole 9, a wastewater outlet pipe 30, a guide cone trough 7, an outlet overflow trough 31 and a UASB conical top cover 32. The comprehensive regulating tank 1 is connected to the central guide tube 12 through the wastewater inlet pipe 4 penetrating the side wall of the UASB tank body 10, and the other side of the central guide tube 12 is connected to the mixing reflux system. The mixing reflux system penetrates the side wall of the UASB tank body 10 and is connected to the heating system. The other side of the mixed reflux system penetrates the side wall of the UASB tank body 10 and is connected to the UASB tank body 10. A biological filler system is provided above the mixed reflux system. A water outlet overflow groove 31 is provided above the biological filler system. The water outlet overflow groove 31 is connected to the wastewater outlet pipe 30. A guide cone groove 7 is provided between the central guide tube 12 and the bottom of the UASB tank body 10. An inspection hole 9 is provided at the bottom of one side of the UASB tank body 10. A mud discharge port 8 is provided at the bottom of the other side of the UASB tank body 10. A UASB conical top cover 32 is provided on the top of the UASB tank body 10.

[0022] In order to further optimize the above scheme, the mixed reflux system includes a mixed liquid circulation pipeline 13, a third valve 14, a submersible mixer 15, a temperature transmitter 16, a pH meter 17, a liquid alkali dosing device 18, a fourth valve 19, a No. 2 electromagnetic flowmeter 20, a fifth valve 24 and a water collecting bell mouth 25. The mixed liquid circulation pipeline 13 is a "U"-shaped pipeline. The central guide tube 12 of the mixed liquid circulation pipeline 13 is connected to the mixed liquid circulation pipeline 13. The outlet on the other side of the mixed liquid circulation pipeline 13 is equipped with a water collecting bell mouth 25. The mixed liquid circulation pipeline 13 is equipped with a fifth valve 24, a liquid alkali dosing device 18, a No. 2 electromagnetic flowmeter 20, a pH meter 17, a temperature transmitter 16, a submersible mixer 15 and a third valve 14 from top to bottom. The submersible mixer 15 is installed inside the mixed liquid circulation pipeline 13. A fourth valve 19 is provided between the liquid alkali dosing device 18 and the mixed liquid circulation pipeline 13. A heating system is installed on the mixed liquid circulation pipeline 13.

[0023] In order to further optimize the above scheme, the heating system includes a steam inlet valve 21, a pipeline water vapor mixing heater 22 and a heating pipe 23. The two sides of the heating pipe 23 are connected to the pipes on both sides of the mixed liquid circulation pipe 13. The heating pipe 23 is installed with a pipeline water vapor mixing heater 22. The air intake pipe of the pipeline water vapor mixing heater 22 is preferably provided with a steam inlet valve 21.

[0024] In order to further optimize the above scheme, the biological filler system includes a bottom bracket 26, a filling port 27, a column 11, a biological filler layer 28 and a top bracket 29. The bottom bracket 26 is installed above the mixed liquid circulation pipeline 13, and the top bracket 29 is installed below the water outlet overflow trough 31. A biological filler layer 28 is provided between the bottom bracket 26 and the top bracket 29. A filling port 27 is opened on one side of the biological filler layer 28. A plurality of columns 11 are provided between the top bracket 29 and the bottom of the UASB tank body 10.

[0025] In order to further optimize the above scheme, the wastewater inlet pipe 4 connecting the comprehensive regulating tank 1 and the UASB tank 10 is provided with a first valve 2, a water inlet booster pump 3, a No. 1 electromagnetic flowmeter 5 and a second valve 6 in sequence.

[0026] In order to further optimize the above scheme, the submersible mixer 15 adopts a pipeline variable frequency submersible mixer 15, which not only has a large flow rate and greatly saves energy compared to traditional water pump circulation, but also can variable frequency adjust the ratio of the mixed liquid return flow rate to the wastewater inlet flow rate, and automatically and accurately control and adjust the rising flow rate of the mixed liquid through an electromagnetic flowmeter.

[0027] In order to further optimize the above solution, a guardrail 33 is installed on the top of the UASB tank 10.

[0028] In order to further optimize the above solution, an observation hole 34 is provided on the UASB conical top cover 32 to facilitate observation of the treatment effect of the high-concentration COD wastewater inside.

[0029] In order to further optimize the above scheme, the device can add anaerobic granular sludge, which can greatly increase the sludge concentration and thus significantly improve the degradation effect of COD. At the same time, the stirring action of the pipeline variable frequency submersible mixer and the interception / reflux action of the biological filler layer are more conducive to the formation of granular sludge.

[0030] Working principle: High-concentration COD wastewater is first placed in the comprehensive regulating tank 1. The first valve 2 and the second valve 6 are opened. Through the linkage of the water inlet lift pump 3 and the No. 1 electromagnetic flowmeter 5, the wastewater enters the UASB tank 10 from the wastewater inlet pipe 4, and is evenly distributed through the central guide tube 12 and the guide cone groove 7. The fifth valve 24 and the third valve 14 are opened, and the internal mixed liquid passes through the mixed liquid circulation pipe 13. The mixed liquid is returned to the bottom from the water collection bell mouth 25 in the middle and upper part by the plugging effect of the pipeline variable frequency submersible mixer 15, and is evenly distributed through the central guide tube 12 and the guide cone groove 7. At the same time, the fourth valve 19 is opened, and the pH meter 17 and the liquid alkali dosing device 18 are used to supplement the alkalinity. If the wastewater The water temperature is low, and the steam inlet valve 21 can be opened. The mixed liquid is heated in the heating pipe 23 through the pipeline water-steam mixing heater 22, and the temperature is controlled by the data of the temperature transmitter 16. The mixed liquid and the wastewater inlet flow from the bottom to the top through the biological filler layer 28, which is conducive to the contact between microorganisms and muddy water, greatly improving the anaerobic biochemical treatment efficiency, and finally flows out through the effluent overflow trough 31, and flows to the next treatment facility through the wastewater effluent pipe 30. The bottom of the UASB tank body 10 is provided with a sludge discharge port 8, which can discharge sludge regularly. The biological filler layer 28 is provided with a filling port 27, and the biological filler can be supplemented according to actual needs. The UASB conical top cover 32 is provided with an observation hole 34, which is convenient for real-time observation of the sewage treatment process.

[0031] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of UASB anaerobic granular sludge biochemical treatment device, characterized in that: The invention comprises a comprehensive regulating pool (1), a wastewater inlet pipe (4), a heating system, a central guide tube (12), a mixing and reflux system, a UASB tank body (10), a biological filler system, a mud outlet (8), a manhole (9), a wastewater outlet pipe (30), a guide cone trough (7), an outlet overflow trough (31) and a UASB conical top cover (32). The comprehensive regulating pool (1) is connected to the central guide tube (12) through the wastewater inlet pipe (4) penetrating the side wall of the UASB tank body (10). The other side of the central guide tube (12) is connected to the mixing and reflux system. The mixing and reflux system penetrates the side wall of the UASB tank body (10) and is connected to the heating system. The other side of the mixing and reflux system penetrates the side wall of the UASB tank body (10) and is connected to the UASB tank body (10); a biological filler system is provided above the mixing and reflux system; a water outlet overflow trough (31) is provided above the biological filler system; the water outlet overflow trough (31) is connected to the wastewater outlet pipe (30); a guide cone trough (7) is provided between the central guide tube (12) and the bottom of the UASB tank body (10); an inspection hole (9) is provided at the bottom of one side of the UASB tank body (10); a mud discharge port (8) is provided at the bottom of the other side of the UASB tank body (10); and a UASB cone-shaped top cover (32) is provided at the top of the UASB tank body (10).

2. A novel UASB anaerobic granular sludge biochemical treatment device according to claim 1, characterized in that: The mixed reflux system comprises a mixed liquid circulation pipeline (13), a third valve (14), a submersible mixer (15), a temperature transmitter (16), a pH meter (17), a liquid alkali dosing device (18), a fourth valve (19), a No. 2 electromagnetic flow meter (20), a fifth valve (24) and a water collection bell mouth (25). The mixed liquid circulation pipeline (13) is a "U"-shaped pipeline. The central guide tube (12) of the mixed liquid circulation pipeline (13) is connected to the mixed liquid circulation pipeline (13). The outlet on the other side of the mixed liquid circulation pipeline (13) is installed There is a water collecting bell mouth (25), and the mixed liquid circulation pipeline (13) is installed with a fifth valve (24), a liquid alkali dosing device (18), a second electromagnetic flow meter (20), a pH meter (17), a temperature transmitter (16), a submersible mixer (15) and a third valve (14) in order from top to bottom. The submersible mixer (15) is installed inside the mixed liquid circulation pipeline (13), and a fourth valve (19) is provided between the liquid alkali dosing device (18) and the mixed liquid circulation pipeline (13). A heating system is installed on the mixed liquid circulation pipeline (13).

3. A novel UASB anaerobic granular sludge biochemical treatment device according to claim 1, characterized in that: The heating system comprises a steam inlet valve (21), a pipeline-type water-steam mixing heater (22) and a heating pipeline (23); two sides of the heating pipeline (23) are connected to two sides of the mixed liquid circulation pipeline (13); a pipeline-type water-steam mixing heater (22) is installed on the heating pipeline (23); and a steam inlet valve (21) is provided on the air inlet pipeline of the pipeline-type water-steam mixing heater (22).

4. A novel UASB anaerobic granular sludge biochemical treatment device according to claim 1, characterized in that: The biological filler system comprises a bottom support (26), a filler port (27), columns (11), a biological filler layer (28) and a top support (29), wherein the bottom support (26) is installed above a mixed liquid circulation pipeline (13), the top support (29) is installed below a water outlet overflow trough (31), a biological filler layer (28) is provided between the bottom support (26) and the top support (29), a filler port (27) is provided on one side of the biological filler layer (28), and a plurality of columns (11) are provided between the top support (29) and the bottom of the UASB tank body (10).

5. A novel UASB anaerobic granular sludge biochemical treatment device according to claim 1, characterized in that: A first valve (2), a water inlet booster pump (3), a No. 1 electromagnetic flowmeter (5) and a second valve (6) are sequentially arranged on a wastewater inlet pipe (4) connecting the comprehensive regulating tank (1) and the UASB tank body (10).

6. A novel UASB anaerobic granular sludge biochemical treatment device according to claim 2, characterized in that: The submersible mixer (15) is a pipeline-type variable-frequency submersible mixer (15).

7. A novel UASB anaerobic granular sludge biochemical treatment device according to claim 1, characterized in that: A guardrail (33) is installed on the top of the UASB tank (10).

8. The novel UASB anaerobic granular sludge biochemical treatment device according to claim 1 is characterized in that: The UASB conical top cover (32) is provided with an observation hole (34).

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