Sludge dewatering treatment equipment

Abstract

The utility model discloses sludge dewatering treatment equipment which comprises a high-pressure double-diaphragm plate frame machine, a water pump, a normal-temperature water tank and a high-temperature water tank, and a water outlet of the normal-temperature water tank and a water outlet of the high-temperature water tank are connected with a water inlet of the high-pressure double-diaphragm plate frame machine through the water pump. A water inlet of the normal-temperature water tank and a water inlet of the high-temperature water tank are connected with a water outlet of the high-pressure double-diaphragm plate frame machine, a drain outlet of the high-pressure double-diaphragm plate frame machine is connected with a sewage well, and a normal-temperature water inlet control valve and a normal-temperature water return control valve are arranged at the water outlet and the water inlet of the normal-temperature water tank respectively. And a high-temperature water inlet control valve and a high-temperature water return control valve are respectively arranged at a water outlet and a water inlet of the high-temperature water tank. In the working process, normal-temperature squeezing is conducted through the normal-temperature water tank, high-temperature squeezing is conducted through the high-temperature water tank after a large amount of sewage is discharged, the sewage amount is greatly reduced at the moment, heat taken away by discharged water is reduced, and the purpose of saving energy consumption is achieved.

Description

Technical Field

[0001] This utility model relates to the field of sludge dewatering, and in particular to a sludge dewatering treatment device. Background Technology

[0002] In sludge treatment projects, sludge dewatering equipment is used for stable and efficient processing. This equipment employs a combination of indirect heating and pressing during the sludge drying process. Since the boiling point of water is closely related to vacuum levels, heating the sludge to a specific temperature while simultaneously creating a vacuum removes a large amount of water.

[0003] The dewatering process mainly consists of two stages: First, the pressing stage, where mechanical pressing removes a large amount of water from the sludge. During this process, a plate and frame press uses high-temperature hot water for pressing, but the initial pressing removes most of the water, resulting in a significant loss of hot water. The pressing water, after being heated by the plate and frame press, flows back to the water tank. Continued heating would cause the discharged water to carry away a large amount of heat. Second, the vacuum extraction stage, after pressing, removes a large amount of steam generated during heating by creating a vacuum, further reducing the sludge's moisture content. During pressing, the removal of a large amount of water, which is then heated by the pressing hot water and directly discharged, results in a significant waste of heat and is not conducive to resource conservation.

[0004] Therefore, how to provide a sludge dewatering treatment device that avoids heat waste is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a sludge dewatering treatment device that uses alternating use of a normal temperature water tank and a high temperature water tank, first performing cold pressing and then high temperature hot water pressing, thereby achieving the goal of saving energy.

[0006] To solve the above-mentioned technical problems, this utility model provides a sludge dewatering treatment device, including a high-pressure double diaphragm plate and frame machine, a water pump, an ambient temperature water tank, and a high-temperature water tank. The outlet of the ambient temperature water tank and the outlet of the high-temperature water tank are connected to the inlet of the high-pressure double diaphragm plate and frame machine through the water pump. The inlet of the ambient temperature water tank and the inlet of the high-temperature water tank are connected to the outlet of the high-pressure double diaphragm plate and frame machine. The sewage outlet of the high-pressure double diaphragm plate and frame machine is connected to a sewage well. An ambient temperature inlet control valve and an ambient temperature return water control valve are respectively installed at the outlet and inlet of the ambient temperature water tank. A high-temperature inlet control valve and a high-temperature return water control valve are respectively installed at the outlet and inlet of the high-temperature water tank.

[0007] Preferably, the system includes an inlet main pipe, two inlet branch pipes, a return main pipe, two return branch pipes, and a sewage pipe. The first ends of the two inlet branch pipes are respectively connected to the outlet of the ambient temperature water tank and the outlet of the high temperature water tank. The ends of the two inlet branch pipes are simultaneously connected to the first end of the inlet main pipe. The end of the inlet main pipe is connected to the inlet of the high-pressure double diaphragm plate and frame machine. The outlet of the high-pressure double diaphragm plate and frame machine is connected to the first end of the return main pipe. The end of the return main pipe is simultaneously connected to the first ends of the two return branch pipes. The ends of the two return branch pipes are respectively connected to the inlet of the ambient temperature water tank and the inlet of the high temperature water tank. The sewage outlet of the high-pressure double diaphragm plate and frame machine is connected to the first end of the sewage pipe. The end of the sewage pipe is connected to the sewage well.

[0008] Preferably, the water pump is installed in the main water inlet pipe, the ambient temperature water inlet control valve and the high temperature water inlet control valve are respectively installed in the two corresponding water inlet pipes, and the ambient temperature water return control valve and the high temperature water return control valve are respectively installed in the two corresponding water return pipes.

[0009] Preferably, a flow meter is installed on the sewage pipe, and a temperature sensor and a level sensor are installed in both the ambient temperature water tank and the high temperature water tank. The controller is connected to the flow meter, the temperature sensor, the level sensor and each control valve.

[0010] Preferably, the water pump is a multi-stage pump.

[0011] Preferably, the ambient temperature inlet water control valve, the ambient temperature return water control valve, the high temperature inlet water control valve, and the high temperature return water control valve are all electrically controlled ball valves connected to the controller.

[0012] Preferably, the room temperature water tank is provided with an overflow port on its side, the overflow port is higher than the high temperature water tank, and the overflow port is connected to the high temperature water tank through an overflow pipe.

[0013] Preferably, the sewage pipe is equipped with a sewage source heat pump for absorbing heat from sewage, and the sewage source heat pump is connected to the high-temperature water tank to form a loop through a heat recovery pipeline.

[0014] Preferably, a booster pump and a heat recovery control valve are provided on the heat recovery pipeline.

[0015] Preferably, the system includes two sets of the wastewater source heat pumps and corresponding booster pumps, with the two wastewater source heat pumps connected in parallel.

[0016] This utility model provides a sludge dewatering treatment device, including a high-pressure double diaphragm plate and frame machine, a water pump, an ambient temperature water tank, and a high-temperature water tank. The outlet of the ambient temperature water tank and the outlet of the high-temperature water tank are connected to the inlet of the high-pressure double diaphragm plate and frame machine via the water pump. The inlet of the ambient temperature water tank and the inlet of the high-temperature water tank are connected to the outlet of the high-pressure double diaphragm plate and frame machine. The sewage outlet of the high-pressure double diaphragm plate and frame machine is connected to a sewage well. An ambient temperature inlet control valve and an ambient temperature return water control valve are respectively installed at the outlet and inlet of the ambient temperature water tank. A high temperature inlet control valve and a high temperature return water control valve are respectively installed at the outlet and inlet of the high-temperature water tank.

[0017] During operation, the machine is first pressed at room temperature in a normal temperature water tank. After a large amount of wastewater is discharged, it is then pressed at high temperature in a high temperature water tank. At this time, the amount of wastewater is greatly reduced, thereby reducing the heat carried away by the discharged water and achieving the purpose of saving energy. Attached Figure Description

[0018] Figure 1 A schematic diagram of a specific embodiment of the sludge dewatering treatment equipment provided by this utility model;

[0019] Figure 2 This is a partially enlarged view of a specific embodiment of the sludge dewatering treatment equipment provided by this utility model.

[0020] Among them, the high-pressure double diaphragm plate and frame machine 1, water pump 2, normal temperature water tank 3, high temperature water tank 4, sewage well 5, normal temperature inlet water control valve 6, normal temperature return water control valve 7, high temperature inlet water control valve 8, high temperature return water control valve 9, inlet main pipe 10, inlet branch pipe 11, return main pipe 12, return branch pipe 13, sewage pipe 14, flow meter 15, sewage source heat pump 16, heat recovery pipeline 17, booster pump 18, and heat recovery control valve 19. Detailed Implementation

[0021] The core of this utility model is to provide a sludge dewatering treatment device that uses a normal temperature water tank and a high temperature water tank alternately, first performing cold pressing and then high temperature hot water pressing, thereby achieving the purpose of saving energy consumption.

[0022] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of a specific embodiment of the sludge dewatering treatment equipment provided by this utility model; Figure 2 This is a partially enlarged view of a specific embodiment of the sludge dewatering treatment equipment provided by this utility model.

[0024] This utility model provides a sludge dewatering treatment device, including a high-pressure double diaphragm plate and frame press 1, a water pump 2, an ambient temperature water tank 3, and a high-temperature water tank 4. The high-pressure double diaphragm plate and frame press 1 includes an inlet, an outlet, and a drain outlet. The ambient temperature water tank 3 includes an outlet and an inlet, and the high-temperature water tank 4 includes an outlet and an inlet. The outlets of the ambient temperature water tank 3 and the high-temperature water tank 4 are connected to the inlet of the high-pressure double diaphragm plate and frame press 1 via the water pump 2. The inlets of the ambient temperature water tank 3 and the high-temperature water tank 4 are connected to the outlet of the high-pressure double diaphragm plate and frame press 1. The drain outlet of the high-pressure double diaphragm plate and frame press 1 is connected to a sewage well 5. The water pump 2 can input water from the ambient temperature water tank 3 and the high-temperature water tank 4 into the high-pressure double diaphragm plate and frame press 1. The ambient temperature water causes the high-pressure double diaphragm plate and frame press 1 to perform ambient temperature pressing, while the high-temperature water heats the sludge, causing the high-pressure double diaphragm plate and frame press 1 to perform high-temperature pressing. The squeezed water flows back to the ambient temperature water tank 3 and the high temperature water tank 4, while the squeezed-out wastewater flows out into the wastewater well 5.

[0025] Furthermore, to achieve precise control, a normal temperature inlet control valve 6 is installed at the outlet of the normal temperature water tank 3, a normal temperature return water control valve 7 is installed at the inlet of the normal temperature water tank 3, a high temperature inlet control valve 8 is installed at the outlet of the high temperature water tank 4, and a high temperature return water control valve 9 is installed at the inlet of the high temperature water tank 4. By opening and closing these valves, water of different temperatures is controlled to enter the high-pressure double diaphragm plate and frame machine 1 and flow back.

[0026] During operation, the ambient temperature inlet water control valve 6 and the ambient temperature return water control valve 7 are open, while the high temperature inlet water control valve 8 and the high temperature return water control valve 9 are closed. The water pump 2 is started, feeding water from the ambient temperature water tank 3 into the high-pressure double diaphragm plate and frame machine 1, and then back into the ambient temperature water tank 3, allowing the ambient temperature water to circulate within the high-pressure double diaphragm plate and frame machine 1. During this process, a large amount of wastewater is discharged into the wastewater well 5. Once a certain discharge volume is reached, the ambient temperature inlet water control valve 6 is closed, and the high temperature inlet water control valve 8 is opened. The water in the high temperature water tank 4 is heated by various heaters, and the water pump 2 feeds the high temperature water into the high-pressure double diaphragm plate and frame machine 1 to heat the internal sludge before flowing back into the ambient temperature water tank 3. This allows the high temperature water to circulate within the high-pressure double diaphragm plate and frame machine 1, and then back into the high temperature water tank 4 for high-temperature pressing. If the return water temperature is too high, the ambient temperature return water control valve 7 is closed, and the high temperature return water control valve 9 is opened, allowing the high temperature return water to flow back into the high temperature water tank 4. The amount of wastewater discharged during this process is reduced, and the heat carried away is correspondingly reduced, thus achieving the goal of saving energy.

[0027] Specifically, in order to achieve the above-mentioned transportation process, the system includes an inlet main pipe 10, two inlet branch pipes 11, a return main pipe 12, two return branch pipes 13 and a drain pipe 14. The beginning and end of each pipe are located according to the direction of water flow, and the water flows from the beginning to the end in the pipe. The first ends of the two inlet water pipes 11 are connected to the outlet of the ambient temperature water tank 3 and the outlet of the high temperature water tank 4, respectively. The ends of the two inlet water pipes 11 are simultaneously connected to the first end of the main inlet water pipe 10. The end of the main inlet water pipe 10 is connected to the inlet of the high pressure double diaphragm plate and frame machine 1. The outlet of the high pressure double diaphragm plate and frame machine 1 is connected to the first end of the return water main pipe 12. The end of the return water main pipe 12 is simultaneously connected to the first ends of the two return water pipes 13. The ends of the two return water pipes 13 are respectively connected to the inlet of the ambient temperature water tank 3 and the inlet of the high temperature water tank 4. The sewage outlet of the high pressure double diaphragm plate and frame machine 1 is connected to the first end of the sewage pipe 14. The end of the sewage pipe 14 is connected to the sewage well 5.

[0028] Meanwhile, water pump 2 is installed in the main water inlet pipe 10, ambient temperature water inlet control valve 6 and high temperature water inlet control valve 8 are respectively installed in the two corresponding water inlet pipes 11, and ambient temperature return water control valve 7 and high temperature return water control valve 9 are respectively installed in the two corresponding return water pipes 13.

[0029] Specifically, pump 2 is a multi-stage pump to improve water delivery capacity. The ambient temperature inlet control valve 6, ambient temperature return water control valve 7, high temperature inlet control valve 8, and high temperature return water control valve 9 are all electrically controlled ball valves connected to the controller. Different types of pumps and valves can also be selected as needed, all of which are within the protection scope of this utility model.

[0030] To achieve intelligent control, a flow meter 15 is installed on the sewage pipe 14, and temperature sensors and level sensors are installed in both the ambient temperature water tank 3 and the high temperature water tank 4. The controller is connected to the flow meter 15, temperature sensors, level sensors, and various control valves. Furthermore, thermometers can be installed on the two return water pipes 13 to monitor multiple temperatures.

[0031] The specific working process is as follows: The sludge, with a moisture content of 95%, is transported to the high-pressure double-diaphragm plate and frame machine 1 via a plunger pump. Once the high-pressure double-diaphragm plate and frame machine 1 is full, the plunger pump is stopped. The ambient temperature inlet water control valve 6 and the ambient temperature return water control valve 7 are opened, while the high temperature inlet water control valve 8 and the high temperature return water control valve 9 are closed. The water pump 2 is then started, inputting water from the ambient temperature water tank 3 into the high-pressure double-diaphragm plate and frame machine 1, and then the water flows back to the ambient temperature water tank 3, thus circulating the ambient temperature water within the high-pressure double-diaphragm plate and frame machine 1. The pressing process is carried out at room temperature through the room temperature water tank 3. During this process, a large amount of wastewater is discharged into the wastewater well 5. The discharge volume is monitored by the flow meter 15. After the discharge volume reaches a certain amount, the room temperature water inlet control valve 6 is closed and the high temperature water inlet control valve 8 is opened. The water in the high temperature water tank 4 is heated by multiple heaters, and then the water pump 2 inputs the high temperature water into the high pressure double diaphragm plate and frame machine 1 to heat the internal sludge before flowing back to the room temperature water tank 3. This allows the high temperature water to circulate within the high pressure double diaphragm plate and frame machine 1 and undergo high temperature pressing through the high temperature water tank 4. When the temperature sensor in the room temperature water tank 3 detects that the return water temperature is higher than 60 to 80 degrees Celsius, and the level sensor in the room temperature water tank 3 detects that the water level in the room temperature water tank 3 is the same as the original level, the room temperature return water control valve 7 is closed and the high temperature return water control valve 9 is opened, allowing the high temperature return water to flow back to the high temperature water tank 4.

[0032] In the sludge dewatering equipment provided in this specific embodiment of the utility model, an overflow port is provided on the side of the ambient temperature water tank 3. The overflow port is higher than the high temperature water tank 4, and the overflow port is connected to the high temperature water tank 4 through an overflow pipe. When there is an error between the thermometer and the level gauge of the ambient temperature water tank 3, some of the high temperature water will flow back to the ambient temperature water tank 3, causing the water level inside the ambient temperature water tank 3 to be higher than the overflow port. The overflow port flows back to the high temperature water tank 4, ensuring that the water levels of the two tanks remain relatively constant.

[0033] Based on the sludge dewatering equipment provided in the above-described specific embodiments, a wastewater source heat pump 16 for absorbing heat from wastewater is installed on the sewage pipe 14. The wastewater source heat pump 16 is connected to the high-temperature water tank 4 through a heat recovery pipeline 17 to form a loop. Specifically, a booster pump 18 and a heat recovery control valve 19 are installed on the heat recovery pipeline 17. That is, the heat recovery control valve 19, the booster pump 18, and the wastewater source heat pump 16 are connected in series, so that the water in the high-temperature water tank 4 circulates after flowing through the above components. The pressing wastewater discharged by the high-pressure double diaphragm plate and frame machine 1 recovers heat through the wastewater source heat pump 16 and is simultaneously supplied to the high-temperature water tank 4 for heating, thus recovering as much residual heat as possible. Furthermore, since sludge production is a continuous operation, after the second operation, the heat remaining in the high-pressure double diaphragm plate and frame machine 1 will be fed back to heat the ambient temperature water tank 3, which can save energy consumption in wastewater pressing as much as possible.

[0034] Specifically, in order to improve equipment reliability, two sets of sewage source heat pumps 16 and corresponding booster pumps 18 are included, with the two sewage source heat pumps 16 connected in parallel.

[0035] The sludge dewatering treatment equipment provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A sludge dewatering treatment apparatus, characterized by, The system includes a high-pressure double diaphragm plate and frame machine (1), a water pump (2), a normal temperature water tank (3), and a high temperature water tank (4). The outlet of the normal temperature water tank (3) and the outlet of the high temperature water tank (4) are connected to the inlet of the high-pressure double diaphragm plate and frame machine (1) through the water pump (2). The inlet of the normal temperature water tank (3) and the inlet of the high temperature water tank (4) are connected to the outlet of the high-pressure double diaphragm plate and frame machine (1). The sewage outlet of the high-pressure double diaphragm plate and frame machine (1) is connected to a sewage well (5). A normal temperature inlet water control valve (6) and a normal temperature return water control valve (7) are respectively installed at the outlet and inlet of the normal temperature water tank (3). A high temperature inlet water control valve (8) and a high temperature return water control valve (9) are respectively installed at the outlet and inlet of the high temperature water tank (4).

2. The sludge dewatering treatment apparatus according to claim 1, characterized by, It includes a main inlet pipe (10), two inlet branch pipes (11), a main return pipe (12), two return branch pipes (13), and a drain pipe (14). The first ends of the two inlet branch pipes (11) are respectively connected to the outlet of the ambient temperature water tank (3) and the outlet of the high temperature water tank (4). The ends of the two inlet branch pipes (11) are simultaneously connected to the first end of the main inlet pipe (10). The end of the main inlet pipe (10) is connected to the inlet of the high-pressure double diaphragm plate and frame machine (1). The outlet of the high-pressure double diaphragm plate and frame machine (1) is connected to the beginning of the return water main pipe (12). The end of the return water main pipe (12) is connected to the beginning of the two return water pipes (13). The ends of the two return water pipes (13) are respectively connected to the inlet of the normal temperature water tank (3) and the inlet of the high temperature water tank (4). The sewage outlet of the high-pressure double diaphragm plate and frame machine (1) is connected to the beginning of the sewage pipe (14). The end of the sewage pipe (14) is connected to the sewage well (5).

3. The sludge dewatering treatment apparatus according to claim 2, characterized by, The water pump (2) is installed in the main water inlet pipe (10), the ambient temperature water inlet control valve (6) and the high temperature water inlet control valve (8) are respectively installed in the two corresponding water inlet pipes (11), and the ambient temperature water return control valve (7) and the high temperature water return control valve (9) are respectively installed in the two corresponding water return pipes (13).

4. The sludge dewatering treatment apparatus according to claim 3, characterized by A flow meter (15) is installed on the sewage pipe (14). A temperature sensor and a liquid level sensor are installed in both the normal temperature water tank (3) and the high temperature water tank (4). The controller is connected to the flow meter (15), the temperature sensor, the liquid level sensor and each control valve.

5. The sludge dewatering treatment apparatus according to claim 4, wherein The water pump (2) is specifically a multi-stage pump.

6. The sludge dewatering treatment apparatus according to claim 5, wherein The ambient temperature water inlet control valve (6), the ambient temperature water return control valve (7), the high temperature water inlet control valve (8), and the high temperature water return control valve (9) are all electrically controlled ball valves connected to the controller.

7. The sludge dewatering treatment apparatus according to claim 2, wherein The side of the ambient temperature water tank (3) is provided with an overflow port, which is higher than the high temperature water tank (4). The overflow port is connected to the high temperature water tank (4) through an overflow pipe.

8. The sludge dewatering apparatus according to any one of claims 2 to 7, characterized by The sewage pipe (14) is equipped with a sewage source heat pump (16) for absorbing the heat of sewage. The sewage source heat pump (16) is connected to the high-temperature water tank (4) through a heat recovery pipeline (17) to form a loop.

9. The sludge dewatering apparatus according to claim 8, wherein The heat recovery pipeline (17) is equipped with a booster pump (18) and a heat recovery control valve (19).

10. The sludge dewatering apparatus according to claim 9, wherein It includes two sets of the sewage source heat pumps (16) and the corresponding booster pumps (18), with the two sewage source heat pumps (16) connected in parallel.

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