Adding device using kitchen stock solution as carbon source

Abstract

The device comprises a main water inlet pipe, one end of the main water inlet pipe is communicated with the outside, the other end of the main water inlet pipe is respectively communicated with a carbon source water inlet pipe and a middle storage water inlet pipe, the other end of the carbon source water inlet pipe is communicated with a carbon source tank, and an outlet of the carbon source tank is communicated with a biochemical system. The other end of the middle storage water inlet pipe is communicated with the middle storage tank, and the carbon source tank is communicated with the middle storage tank through a slag discharge pipeline at the lower end. According to the technical scheme, the stock solution serving as a carbon source is pretreated, so that the quality of the carbon source is ensured, a carbon source conveying pipeline is prevented from being blocked, and the influence of carbon source impurities on a biochemical system is reduced; secondly, the filtered slag is directly discharged into a middle storage tank and still enters an anaerobic reactor along with the stock solution for reaction, so that the produced gas is not reduced as much as possible, the produced sludge of a biochemical section is also reduced, and the treatment cost of the sludge is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen waste liquid treatment, in particular to a device for adding kitchen waste liquid as a carbon source. Background Art

[0002] After pre-treatment of food waste, the biogas enters the anaerobic reactor, and the effluent enters the sewage biochemical system for further treatment. The COD of the anaerobic treated biogas is low, but the TN is high, resulting in a serious C / N ratio deficiency, requiring the addition of a carbon source to the sewage treatment system. In general, to save costs, untreated biogas is used as a carbon source and added directly to the sewage system. However, this has the following disadvantages in practical applications:

[0003] 1) The raw liquid contains a lot of impurities. If it enters the biochemical system directly, it will affect the biochemical system and the MBR membrane at the back end, reduce the treatment capacity, and even cause major problems such as hypoxia and membrane clogging, which will prevent normal production operation;

[0004] 2) Using the raw liquid as a carbon source without pretreatment, or pretreatment in the sewage section, will increase the amount of sludge in the biochemical system and increase the cost of sludge disposal;

[0005] 3) In actual projects, the storage tank (anaerobic water inlet tank) is generally far away from the biochemical pool. The untreated carbon source is very likely to clog the pipe during transportation, resulting in poor carbon source addition. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model proposes a device for adding kitchen waste liquid as a carbon source.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A device for adding kitchen waste liquid as a carbon source includes a main water inlet pipe with one end connected to the outside, the other end of the main water inlet pipe being connected to a carbon source water inlet pipe and an intermediate storage water inlet pipe respectively, the other end of the carbon source water inlet pipe being connected to a carbon source tank, the outlet of the carbon source tank being connected to a biochemical system, the other end of the intermediate storage water inlet pipe being connected to an intermediate storage tank, and the carbon source tank being connected to the intermediate storage tank via a slag discharge pipe at its lower end.

[0009] As a further improvement of the above technical solution:

[0010] Preferably, the bottom of the lower end of the carbon source tank is an oblique cone bottom and is elevated by supporting legs.

[0011] Preferably, a bottom discharge pipe is provided at the bottom of the oblique cone bottom of the carbon source tank, and a bottom discharge manual gate valve and a bottom discharge electric gate valve are provided on the bottom discharge pipe.

[0012] Preferably, a cylindrical filter screen is provided in the middle of the carbon source tank, and the carbon source water inlet pipe is connected to the cylindrical filter screen.

[0013] Preferably, the bottom of the cylindrical filter is narrowed and connected to a slag discharge pipe, and the slag discharge pipe is installed with a manual slag discharge gate valve and an electric slag discharge gate valve. The upper end of the cylindrical filter is connected with a detachable flange cover, and the upper end of the flange cover is provided with a telescopic rod motor, and the telescopic rod motor is connected to an electric lifting rod perpendicular to the cylindrical filter, and the electric lifting rod is connected to a slag cleaning plate movably arranged inside the cylindrical filter, and a slag cleaning brush is provided on the slag cleaning plate.

[0014] Preferably, the carbon source water inlet pipe is provided with a carbon source water inlet manual valve, a carbon source water inlet flowmeter, and a carbon source water inlet electric switch valve, and the carbon source water inlet electric switch valve is connected to an ultrasonic level meter provided at the upper end of the carbon source tank.

[0015] Preferably, the intermediate storage water inlet pipe is provided with an intermediate storage water inlet manual valve, an intermediate storage water inlet flow meter, and an intermediate storage water inlet electric regulating valve, and the intermediate storage water inlet electric regulating valve is interlocked with the carbon source water inlet flow meter.

[0016] Preferably, the outlet of the carbon source tank is connected to the carbon source addition pipeline through a flanged manual gate valve, a carbon source addition pump is provided at one end of the carbon source addition pipeline, and the other end of the carbon source addition pipeline is connected to the biochemical system.

[0017] Preferably, a carbon source addition flowmeter is provided on the carbon source addition pipeline.

[0018] Preferably, a mixer is provided in the intermediate storage tank.

[0019] Compared with the existing technology, the beneficial effects of the utility model are:

[0020] (1) The utility model pre-treats the raw liquid used as the carbon source, thereby ensuring the quality of the carbon source, preventing the carbon source delivery pipeline from being blocked, and reducing the impact of carbon source impurities on the biochemical system;

[0021] (2) The slag filtered out by the utility model is directly discharged into the intermediate storage tank and still enters the anaerobic reactor with the raw liquid for reaction, which minimizes the gas production and also reduces the sludge production in the biochemical section, thus reducing the sludge treatment cost;

[0022] (3) The automatic slag cleaning system of the carbon source dosing device of the utility model can set the cleaning frequency according to the actual filter screen clogging situation during operation, eliminating the need for daily manual cleaning and reducing operating costs;

[0023] (4) The utility model is set to automatically open the water inlet valve when the liquid level is low, so as to ensure that there is always treated carbon source in the carbon source tank, ensure the uniform and continuous addition of carbon source, and ensure the stable operation of the system;

[0024] (5) After using it for a period of time, you can open the top cover of the device and take out the filter to brush or rinse it with a high-pressure water gun;

[0025] (6) The entire device can be fully automatically operated after the flow value and cleaning frequency are set. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall main view structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the slag cleaning component of the present invention.

[0028] In the figure: 1. Main water inlet pipe; 2. Manual water inlet valve for carbon source; 3. Flow meter for carbon source inlet; 4. Electric on / off valve for carbon source inlet; 5. Flange; 6. Intermediate water inlet pipe; 7. Manual water inlet valve for intermediate water source; 8. Flow meter for intermediate water source; 9. Electric regulating valve for intermediate water source; 10. Carbon source tank; 11. Support legs; 12. Breathing port; 13. Ultrasonic level gauge; 14. Carbon source inlet pipe; 15. Bracket; 16. Telescopic rod motor; 17. Electric lifting and retracting rod; 18. Detachable Lan cover; 19. Slag cleaning tray; 20. Slag cleaning brush; 21. Cylindrical filter; 22. Manual gate valve for slag discharge; 23. Electric gate valve for slag discharge; 24. Slag discharge pipeline; 25. Manual gate valve for bottom discharge; 26. Electric gate valve for bottom discharge; 27. Bottom discharge pipeline; 28. Carbon source dosing pump; 29. ​​Flange-type manual gate valve; 30. Blind plate; 31. Manual butterfly valve; 32. Elastic joint; 33. Carbon source dosing flowmeter; 34. Carbon source dosing pipeline; 35. Intermediate storage tank; 36. Mixer. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] As attached Figure 1 As shown, the specific technical solutions of this technical solution are as follows:

[0033] After pretreatment, the liquid phase of the kitchen waste enters the intermediate storage tank 35 and then enters the anaerobic reactor and biochemical treatment. This utility model processes a small amount of pretreated liquid phase through the dosing equipment and transports it to the biochemical system as a carbon source, thereby improving the quality of the carbon source and saving operating costs.

[0034] The water from the main water inlet pipe 1 comes from the pretreatment workshop and is divided into two routes, one is the carbon source water inlet pipe 14, and the other is the intermediate storage water inlet pipe 6;

[0035] 1. The structure of the carbon source water inlet pipe 14 is as follows:

[0036] The carbon source water inlet pipe 14 is installed with a carbon source water inlet manual valve 2, a carbon source water inlet flow meter 3, and a carbon source water inlet electric switch valve 4 before entering the carbon source tank 10;

[0037] The carbon source water inlet manual valve 2 is normally open and is closed when the carbon source water inlet flowmeter 3 and the carbon source water inlet electric switch valve 4 are inspected and repaired, which does not affect the normal operation of the main process. The carbon source water inlet electric switch valve 4 is used to control whether water is flowing into the carbon source tank 10. It is interlocked with the ultrasonic liquid level meter 13 installed on the carbon source tank 10. When the liquid level is high, the carbon source water inlet electric switch valve 4 is closed and no water is flowing in. When the liquid level is low, the carbon source water inlet electric switch valve 4 is opened to automatically replenish water.

[0038] The carbon source water inlet pipe 14 is connected to the carbon source tank 10 by a flange 5 .

[0039] 2. The structure of the water inlet pipe 6 of the middle storage is as follows:

[0040] The intermediate water inlet pipe 6 is equipped with an intermediate water inlet manual valve 7, an intermediate water inlet flow meter 8, and an intermediate water inlet electric regulating valve 9 before entering the intermediate storage tank 35;

[0041] The water inlet manual valve 7 of the storage tank can be closed to cut off the water in the front pipeline and then the water inlet flow meter 8 and the water inlet electric regulating valve 9 of the storage tank can be inspected. The water inlet electric regulating valve 9 of the storage tank is interlocked with the carbon source water inlet flow meter 3.

[0042] Since the rest of the incoming water enters the carbon source tank 10 in addition to the intermediate storage tank 35, the water inlet flow rate value of the carbon source tank 10 can be set, and the opening of the intermediate storage water inlet electric regulating valve 9 can be adjusted in a chain manner. The intermediate storage water inlet flow meter 8 can also display the actual water inflow of the intermediate storage tank 35;

[0043] The intermediate storage water inlet pipe 6 is connected to the intermediate storage tank 35 by a flange 5 , and a mixer 36 is provided in the intermediate storage tank 35 .

[0044] 3. The structure inside the carbon source tank 10 is as follows:

[0045] The carbon source water inlet pipe 14 enters the carbon source tank 10 and is connected to the cylindrical filter screen 21 in the middle. The water inlet pipe 14 is fixed in the tank wall by a bracket 15.

[0046] The bottom of the cylindrical filter screen 21 is narrowed and connected to a slag discharge pipe 24. A slag discharge manual gate valve 22 and a slag discharge electric gate valve 23 are installed on the slag discharge pipe 24. The slag discharge manual gate valve 22 is normally open and is closed only when the slag discharge electric gate valve 23 is inspected.

[0047] As attached Figure 1 With attached Figure 2 As shown, there is a set of slag cleaning components in the cylindrical filter 21, which consists of a telescopic rod motor 16, an electric lifting and retracting rod 17, a slag cleaning plate 19, and a slag cleaning brush 20. The component is connected to the cylindrical filter 21 through a detachable flange cover 18. The flange cover 18 can be disassembled and the entire component can be taken out to clean the inside of the cylindrical filter 21. The telescopic rod motor 16 is supported on the detachable flange cover 18 by the bracket 15.

[0048] During daily operation, the incoming water enters the cylindrical filter 21 for filtration, impurities are retained in the mesh, and the filtered clean water flows into the carbon source tank 10. The slag cleaning component is controlled by a time relay, and the slag cleaning program is started every time a period of operation is performed;

[0049] The slag cleaning procedure is as follows: close the carbon source water inlet electric switch valve 4, turn off the carbon source dosing pump 28, open the slag discharge electric gate valve 23, and at the same time start the electric lifting and retracting rod 17 to push the slag cleaning plate 19 downward, use the slag cleaning brush 20 to brush off the impurities on the filter screen 21, push them to the bottom, and discharge them into the intermediate storage tank 35 through the slag discharge pipe 24, then close the slag discharge electric gate valve 23, and then the electric lifting and retracting rod 17 and the slag cleaning plate 19 return to their original positions. After they are in place, open the carbon source water inlet electric switch valve 4 to carry out the next stage of water inlet filtration.

[0050] The bottom of the carbon source tank 10 is made into an inclined cone bottom, and the bottom is raised by supporting legs 11 to leave space for the valve to be installed.

[0051] The conical bottom of the tank is connected to the bottom discharge pipe 27, the bottom discharge manual gate valve 25, and the bottom discharge electric gate valve 26.

[0052] After the dosing device has been running for a period of time, impurities will inevitably accumulate at the bottom. At this time, the bottom discharge electric gate valve 26 can be opened when the carbon source water inlet electric switch valve 4 and the carbon source dosing pump 28 are closed to discharge the mud at the bottom of the carbon source tank 10.

[0053] 4. The subsequent specific structure of the carbon source tank 10 is as follows:

[0054] The outlet of the carbon source tank 10 is connected to a carbon source dosing assembly via a flanged manual gate valve 29. After the flanged manual gate valve 29 is closed, the carbon source dosing pump 28 and its associated pipeline valves are disassembled for cleaning or maintenance.

[0055] The flange-type manual gate valve 29 is connected to a three-way pipe, one of which is provided with a blind plate 30. The blind plate 30 is provided to facilitate the subsequent expansion of the overall equipment. The other pipe opening is connected to a carbon source addition pipe 34 via a manual butterfly valve 31. One end of the carbon source addition pipe 34 is connected to a carbon source addition pump via an elastic joint 32. The other end of the carbon source addition pipe 34 is connected to the biochemical system. The carbon source addition pump 28 delivers the filtered food waste liquid in the carbon source tank 10 to the biochemical system as a carbon source.

[0056] Left and right carbon source addition flow meters 33 are provided on the carbon source addition pipeline 34. The carbon source addition flow meter 33 can record the amount of carbon source added to the biochemical system. At the same time, it can also be linked with the carbon source addition pump 28 to set the daily addition cumulative flow value. When a sufficient amount is added, the carbon source addition pump 28 is chained and stopped.

[0057] In summary, during the operation of the entire equipment, the functions of equipment protection, automatic cleaning, and quantitative dosing are realized through the interlocking of the electric switch valve, regulating valve, liquid level meter, and flow meter.

[0058] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A device for adding kitchen waste liquid as a carbon source, comprising a main water inlet pipe (1) with one end connected to the outside, characterized in that: The other end of the main water inlet pipe (1) is respectively connected to the carbon source water inlet pipe (14) and the intermediate storage water inlet pipe (6); the other end of the carbon source water inlet pipe (14) is connected to the carbon source tank (10); the outlet of the carbon source tank (10) is connected to the biochemical system; the other end of the intermediate storage water inlet pipe (6) is connected to the intermediate storage tank (35); and the carbon source tank (10) is connected to the intermediate storage tank (35) via the slag discharge pipe (24) at the lower end.

2. The device for adding kitchen waste liquid as a carbon source according to claim 1, characterized in that: The bottom of the lower end of the carbon source tank (10) is in the form of an oblique cone, and is elevated by supporting legs (11).

3. The device for adding kitchen waste liquid as a carbon source according to claim 2, characterized in that: A bottom discharge pipe (27) is provided at the bottom of the oblique cone bottom of the carbon source tank (10), and a bottom discharge manual gate valve (25) and a bottom discharge electric gate valve (26) are provided on the bottom discharge pipe (27).

4. The device for adding kitchen waste liquid as a carbon source according to claim 1, characterized in that: A cylindrical filter screen (21) is provided in the middle of the carbon source tank (10), and the carbon source water inlet pipe (14) is connected to the cylindrical filter screen (21).

5. The device for adding kitchen waste liquid as a carbon source according to claim 4, characterized in that: The bottom of the cylindrical filter (21) is narrowed and connected to a slag discharge pipe (24), and the slag discharge pipe (24) is installed with a slag discharge manual gate valve (22) and a slag discharge electric gate valve (23). The upper end of the cylindrical filter (21) is connected with a detachable flange cover (18), and the upper end of the flange cover is provided with a telescopic rod motor (16), and the telescopic rod motor (16) is connected to an electric lifting rod (17) perpendicular to the cylindrical filter (21), and the electric lifting rod (17) is connected to a slag cleaning plate (19) movably arranged inside the cylindrical filter (21), and a slag cleaning brush (20) is provided on the slag cleaning plate (19).

6. The device for adding kitchen waste liquid as a carbon source according to claim 1, characterized in that: The carbon source water inlet pipe (14) is provided with a carbon source water inlet manual valve (2), a carbon source water inlet flowmeter (3), and a carbon source water inlet electric switch valve (4). The carbon source water inlet electric switch valve (4) is connected to an ultrasonic level meter (13) provided at the upper end of the carbon source tank (10).

7. The device for adding kitchen waste liquid as a carbon source according to claim 6, characterized in that: The intermediate storage water inlet pipe (6) is provided with an intermediate storage water inlet manual valve (7), an intermediate storage water inlet flow meter (8), and an intermediate storage water inlet electric regulating valve (9). The intermediate storage water inlet electric regulating valve (9) is interlocked with the carbon source water inlet flow meter (3).

8. The device for adding kitchen waste liquid as a carbon source according to claim 1, characterized in that: The outlet of the carbon source tank (10) is connected to the carbon source addition pipeline (34) through a flange-type manual gate valve (29). A carbon source addition pump (28) is provided at one end of the carbon source addition pipeline (34), and the other end of the carbon source addition pipeline (34) is connected to the biochemical system.

9. The device for adding kitchen waste liquid as a carbon source according to claim 8, characterized in that: The carbon source addition pipeline (34) is provided with a carbon source addition flowmeter (33).

10. The device for adding kitchen waste liquid as a carbon source according to claim 1, characterized in that: A mixer (36) is provided in the intermediate storage tank (35).

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