Sludge discharge system of gravity concentration tank and sewage treatment equipment

Abstract

The utility model discloses a sludge discharge system of a gravity concentration tank and sewage treatment equipment. The gravity concentration tank sludge discharge system comprises a gravity concentration tank sludge discharge hopper, a sludge concentration online monitor, a sludge conditioning tank, a liquid level meter, a sludge discharge pipeline, a sludge discharge pump and a central controller. The sludge discharge pump is controlled by the central controller, the sludge concentration online monitor monitors the sludge concentration in the gravity concentration tank in real time, the liquid level meter monitors the sludge liquid level height of the conditioning tank in real time, and signals of the sludge concentration online monitor and the liquid level meter are transmitted to the central controller. The sludge discharge system of the gravity concentration tank performs automatic control according to the sludge concentration of the gravity concentration tank and the liquid level of the conditioning tank to realize automatic sludge discharge of the gravity concentration tank and ensure the stability of the sludge inlet concentration of the conditioning tank.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to a gravity concentration tank mud discharge system and sewage treatment equipment. Background Art

[0002] A large amount of sludge will be generated during the sewage treatment process. The sludge generally has a high water content and a large volume, which is not conducive to storage, transportation, treatment, disposal and utilization. It must be dehydrated to reduce the volume of sludge, thereby reducing the cost of sludge treatment. Sludge concentration is an important means to remove water from sludge. At present, among all sludge concentration methods, gravity concentration is the most widely used. Gravity concentration uses the gravity of solid particles in sludge to naturally settle and compact, thereby forming a high-concentration sludge layer to achieve the purpose of sludge concentration. The sludge concentrated in the gravity concentration tank is sent to the conditioning tank for conditioning by adding drugs, and then sent to the plate and frame filter press for pressing to reduce the sludge water content to 60%. The existing gravity concentration tank sludge discharge system cannot realize automatic sludge discharge from the gravity concentration tank, and cannot guarantee the stability of the sludge concentration entering the conditioning tank.

[0003] Therefore, how to achieve automatic transportation of sludge in the gravity thickening tank and stabilize the sludge concentration in the conditioning tank is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a gravity thickening tank sludge discharge system and sewage treatment equipment to achieve automatic transportation of gravity thickening tank sludge and stable sludge concentration in the conditioning tank. To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A gravity thickening tank sludge discharge system comprises: a gravity thickening tank sludge discharge hopper, provided with a containing space, the containing space being capable of containing sludge;

[0006] The sludge concentration online monitor is installed in the sludge hopper of the gravity thickening tank;

[0007] Sludge conditioning tank, the sludge conditioning tank is connected with the sludge hopper of the gravity thickening tank through the sludge discharge pipeline;

[0008] Liquid level meter, set in the sludge conditioning tank;

[0009] A mud discharge pump, which is arranged on the mud discharge pipeline;

[0010] The central controller is connected with the sludge concentration online monitor, the sludge pump and the liquid level meter signal, and the central controller can pre-receive and store the first liquid level threshold and the second liquid level threshold, and the second liquid level threshold is greater than the first liquid level threshold.

[0011] Furthermore, in the above-mentioned gravity thickening tank mud discharge system, the mud discharge pump and the mud discharge pipeline are connected by flanges.

[0012] Furthermore, in the above-mentioned gravity thickening tank mud discharge system, a first valve is installed at the inlet of the mud discharge pump, and a second valve is installed at the outlet of the mud discharge pump.

[0013] Furthermore, in the above-mentioned gravity thickening tank sludge discharge system, the first valve and the second valve are both connected to the central controller signal.

[0014] Furthermore, the above-mentioned gravity thickening tank mud discharge system also includes a check valve, which is arranged between the second valve and the outlet of the mud discharge pump.

[0015] Furthermore, the above-mentioned gravity thickening tank sludge discharge system also includes a vibration vibrator, which is arranged on the sludge discharge pipe.

[0016] The utility model also provides a sewage treatment device, comprising any one of the above-mentioned gravity concentration tank mud discharge systems.

[0017] The gravity thickening tank sludge discharge system proposed in the utility model controls the sludge discharge pump through the central controller, and the sludge concentration online monitor and the liquid level meter signal are transmitted to the central controller. The sludge concentration online monitor monitors the sludge concentration in the gravity thickening tank in real time, and the liquid level meter monitors the sludge liquid level in the conditioning tank in real time. When the sludge concentration online monitor detects that the sludge concentration reaches the set value and the conditioning tank liquid level is lower than the first liquid level threshold, the sludge discharge pump is started to feed sludge into the sludge conditioning tank. When the sludge concentration drops below the set value or the conditioning tank liquid level is higher than the second liquid level threshold, the sludge discharge pump stops running. The gravity thickening tank sludge discharge system automatically controls the gravity thickening tank sludge concentration and the conditioning tank liquid level according to the gravity thickening tank sludge concentration to achieve automatic sludge discharge from the gravity thickening tank and ensure the stability of the sludge concentration entering the conditioning tank.

[0018] The setting value of the sludge concentration online monitor and the specific values ​​of the first liquid level threshold and the second liquid level threshold can be manually set and adjusted according to factors such as sludge properties and seasonal changes, thereby reducing the impact of factors such as front-end sewage concentration changes, temperature changes and sludge property changes on the stability of sludge concentration discharged from the gravity thickening tank, improving the conditioning effect of the conditioning tank, making the moisture content of the sludge discharged from the plate and frame filter press meet the standards, improving the sludge discharge effect, and improving the working stability of the plate and frame filter press. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the sludge discharge system of the gravity thickening tank.

[0020] In the figure: 1 gravity thickening tank sludge hopper, 2 sludge concentration online monitor, 3 sludge discharge pipeline, 4 first valve, 5 sludge discharge pump, 6 second valve, 7 level meter, 8 sludge conditioning tank. DETAILED DESCRIPTION

[0021] Reference Figure 1The utility model proposes a gravity thickening tank sludge discharge system, including a gravity thickening tank sludge discharge bucket 1, an online sludge concentration monitor 2, a sludge conditioning tank 8, a liquid level meter 7, a sludge discharge pipeline 3, a sludge discharge pump 5 and a central controller, wherein the gravity thickening tank sludge discharge bucket 1 is provided with a containing space, and the containing space can contain sludge; the sludge concentration online monitor 2 is arranged in the gravity thickening tank sludge discharge bucket 1; the sludge conditioning tank 8 is connected with the gravity thickening tank sludge discharge bucket 1 through the sludge discharge pipeline 3; the liquid level meter 7 is arranged in the sludge conditioning tank 8; the sludge discharge pump 5 is arranged on the sludge discharge pipeline 3; the central controller is connected with the sludge concentration online monitor 2, the sludge discharge pump 5 and the liquid level meter 7 signals, and the central controller can pre-receive and store a first liquid level threshold and a second liquid level threshold, and the second liquid level threshold is greater than the first liquid level threshold.

[0022] Compared with the prior art, the utility model provides a gravity thickening tank sludge discharge system, which has the following beneficial effects: the sludge discharge pump is controlled by the central controller, the sludge concentration online monitor and the liquid level meter signal are transmitted to the central controller, the sludge concentration online monitor monitors the sludge concentration in the gravity thickening tank in real time, and the liquid level meter monitors the sludge liquid level in the conditioning tank in real time. When the sludge concentration online monitor detects that the sludge concentration reaches the set value and the conditioning tank liquid level is lower than the first liquid level threshold, the sludge discharge pump is started to feed sludge into the sludge conditioning tank. When the sludge concentration drops below the set value or the conditioning tank liquid level is higher than the second liquid level threshold, the sludge discharge pump stops running. The gravity thickening tank sludge discharge system automatically controls the gravity thickening tank sludge concentration and the conditioning tank liquid level according to the gravity thickening tank sludge concentration and the conditioning tank liquid level to achieve automatic sludge discharge from the gravity thickening tank and ensure the stability of the sludge concentration entering the conditioning tank.

[0023] The specific values ​​of the first liquid level threshold and the second liquid level threshold are not limited, and the specific values ​​of the first liquid level threshold and the second liquid level threshold can be manually set and adjusted according to factors such as sludge properties and seasonal changes.

[0024] There is no limit on the sludge concentration setting value of the sludge concentration online monitor. The setting value of the sludge concentration online monitor can be manually set and adjusted according to factors such as sludge properties and seasonal changes, thereby reducing the impact of factors such as front-end sewage concentration changes, temperature changes and sludge property changes on the stability of sludge concentration discharged from the gravity thickening tank, improving the conditioning effect of the conditioning tank, making the moisture content of the sludge discharged from the plate and frame filter press meet the standards, improving the sludge discharge effect, and improving the working stability of the plate and frame filter press.

[0025] Specifically, the mud discharge pump 5 is connected to the mud discharge pipe 3 by a flange.

[0026] The flange connection design allows for quick and convenient connection and disconnection between the sludge pump 5 and the sludge pipe 3, making the installation, maintenance and replacement of the equipment easier and improving work efficiency. At the same time, due to the detachability of the flange connection, when the sludge pump 5 fails, the components can be easily disassembled and replaced, reducing the maintenance difficulty and cost of the gravity thickening tank sludge discharge system.

[0027] Specifically, a first valve 4 is installed at the inlet of the mud pump 5 , and a second valve 6 is installed at the outlet of the mud pump 5 .

[0028] When the sludge pump 5 fails, the staff can cut off the first valve 4 and the second valve 6 of the inlet and outlet pipes of the sludge pump 5 to isolate the sludge, making it convenient to inspect and repair the sludge pump 5.

[0029] In addition, the first valve 4 and the second valve 6 may be butterfly valves or gate valves, and the specific valve types are not limited.

[0030] Specifically, the first valve 4 and the second valve 6 are both connected to the central controller by signal, and the opening or closing of the first valve 4 and the second valve 6 is controlled by the central controller to realize automatic control of the opening and closing of the valves.

[0031] It should be understood that the central controller is connected to the first valve 4 and the second valve 6 via signals. The signal connection includes wired connection or wireless connection. The embodiment of the utility model provides a wireless connection method.

[0032] Specifically, a check valve is also included, and the check valve is arranged between the second valve 6 and the outlet of the mud pump 5 .

[0033] The main function of the check valve is to prevent sludge from flowing back and protect the sludge pump 5 from being affected by backflow.

[0034] Specifically, it also includes a vibration vibrator, which is arranged on the mud discharge pipe 3.

[0035] The vibrating vibrator can solve the problem of sludge blocking in the sludge discharge pipe 3 by knocking or vibrating.

[0036] The utility model also proposes a sewage treatment device, including any one of the gravity thickening tank sludge discharge systems described above, and thus has all the technical effects of the gravity thickening tank sludge discharge systems described above, which will not be described in detail herein.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gravity thickening tank sludge discharge system, characterized in that: include: A gravity thickening tank sludge hopper (1) is provided with a receiving space, wherein the receiving space is capable of receiving sludge; An online sludge concentration monitor (2) is arranged in the sludge discharge hopper (1) of the gravity thickening tank; A sludge conditioning tank (8), wherein the sludge conditioning tank (8) is connected to the sludge discharge hopper (1) of the gravity thickening tank via a sludge discharge pipeline (3); A liquid level meter (7) is arranged in the sludge conditioning tank (8); A mud discharge pump (5), wherein the mud discharge pump (5) is arranged on the mud discharge pipeline (3); The central controller is connected to the sludge concentration online monitor (2), the sludge pump (5) and the liquid level meter (7) by signals, and the central controller is capable of pre-receiving and storing a first liquid level threshold and a second liquid level threshold, wherein the second liquid level threshold is greater than the first liquid level threshold.

2. A gravity thickening tank sludge discharge system according to claim 1, characterized in that: The mud discharge pump (5) is connected to the mud discharge pipeline (3) by means of a flange.

3. A gravity thickening tank sludge discharge system according to claim 1, characterized in that: A first valve (4) is installed at the inlet of the mud discharge pump (5), and a second valve (6) is installed at the outlet of the mud discharge pump (5).

4. A gravity thickening tank sludge discharge system according to claim 3, characterized in that: The first valve (4) and the second valve (6) are both connected to the central controller by signal.

5. A gravity thickening tank sludge discharge system according to claim 3, characterized in that: It also comprises a check valve, which is arranged between the second valve (6) and the outlet of the mud pump (5).

6. A gravity thickening tank sludge discharge system according to claim 1, characterized in that: It also comprises a vibrating vibrator, which is arranged on the mud discharge pipe (3).

7. A sewage treatment equipment, characterized in that: It comprises the gravity thickening tank sludge discharge system as described in any one of claims 1 to 6.

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