Tail water treatment system of water purification device

Abstract

The utility model discloses a tail water treatment system of a water purification device, which comprises a reuse water tank, a sludge sedimentation tank, a sludge lift pump, a sludge clarifier, a sludge delivery pump, a filter press and a reuse water lift pump, siphon water generated by the water purification device is stored in the reuse water tank, and muddy water generated by the water purification device is stored in the sludge sedimentation tank. The sludge lifting pump is used for conveying sludge at the bottom of the sludge settling pond to the sludge clarifier, the top of the sludge clarifier is connected to the reuse water pond through a pipeline, the sludge conveying pump is used for conveying sludge at the bottom of the sludge clarifier to the filter press, and a liquid outlet of the filter press is connected to the reuse water pond through a pipeline. And the reuse water lifting pump is used for conveying reuse water in the reuse water tank to the raw water tank. Through cooperation of the sludge sedimentation tank, the reuse water tank, the sludge clarifier and the filter press, siphon water and muddy water are recycled, compared with existing wastewater treatment, tail water discharge is reduced, and recycling of water resources is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tailwater treatment technology for water purification devices, and more specifically, to a tailwater treatment system for water purification devices. Background Technology

[0002] The preparation of industrial water, chemical water, and fire-fighting water in coal-fired power plants utilizes water purification devices to purify raw water (river water). Existing water purification devices integrate flocculation, filtration, and sedimentation, and are used as follows: Figure 1 As shown, raw water (river water) is discharged into raw water tank 1. The raw water is then transported to pipeline mixer 2 by raw water lift pump 101. After mixing with flocculant and coagulant injected into pipeline mixer 2, the raw water flows into water purification device 6. After sedimentation and filtration by water purification device 6, the purified water that meets the standards is discharged into water purification tank. The generated sewage (siphon water and mud water) is discharged into sludge sedimentation tank 7 and then periodically discharged or transported to other areas by sludge lift pump 701. The generated sewage has a low wastewater reuse rate.

[0003] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a water purification device tailwater treatment system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wastewater treatment system for a water purification device includes a reclaimed water tank, a sludge sedimentation tank, a sludge lift pump, a sludge clarifier, a sludge transfer pump, a filter press, and a reclaimed water lift pump. The reclaimed water tank stores siphon water generated by the water purification device, and the sludge sedimentation tank stores sludge water generated by the water purification device. The top of the sludge sedimentation tank has a connecting port for the upper clear liquid inside to flow into the reclaimed water tank. The sludge lift pump is used to transport the sludge at the bottom of the sludge sedimentation tank to the sludge clarifier. The top of the sludge clarifier is connected to the reclaimed water tank via a pipe. The sludge transfer pump is used to transport the sludge at the bottom of the sludge clarifier to the filter press. The outlet of the filter press is connected to the reclaimed water tank via a pipe. The reclaimed water lift pump is used to transport the reclaimed water in the reclaimed water tank to the raw water tank.

[0007] Furthermore, the filter press is connected to a dehydrating agent dosing device via a pipeline, and the dehydrating agent dosing device injects dehydrating agent into the filter press via the pipeline.

[0008] Furthermore, the raw water in the raw water tank is transported to the pipeline mixer by the raw water lift pump, and after being mixed with the water treatment agent in the pipeline mixer, it flows to the water purification device.

[0009] Furthermore, the pipeline mixer is connected to a flocculant dosing device and a coagulant aid dosing device, respectively. The flocculant dosing device is used to inject flocculant into the pipeline mixer, and the coagulant aid dosing device is used to inject coagulant aid into the pipeline mixer.

[0010] Furthermore, the raw water booster pump is connected to the pipeline mixer via an inlet pipe, and an inlet turbidity meter is installed on the inlet pipe.

[0011] Furthermore, the water purification device has a water outlet connected to a water outlet pipe, which is connected to a water purification tank. A turbidity meter is installed on the water outlet pipe.

[0012] Furthermore, the sludge lift pump is also used to transport the sludge at the bottom of the sludge settling tank to the vacuum belt dewatering machine.

[0013] The beneficial effects of this utility model are as follows: In this utility model, the sludge sedimentation tank, the reclaimed water tank, the sludge clarifier and the filter press are combined to realize the recycling of siphon water and mud water. Compared with the existing wastewater treatment, the discharge of tailwater is reduced and the water resources are recycled. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a raw water purification treatment method in the prior art.

[0015] Figure 2 This is a schematic diagram of the tailwater treatment system of the water purification device in this embodiment.

[0016] Attached reference numerals: Raw water tank 1, Raw water lift pump 101, Inlet pipe 102, Inlet turbidity meter 103, Pipe mixer 2, Flocculant dosing device 3, Tank 301, Shaft 302, Motor 303, Paddle 30, Outlet pipe 305, Valve 306, Coagulant dosing device 4, Dewatering agent dosing device 5, Water purification device 6, Outlet pipe 601, Outlet turbidity meter 602, Sludge sedimentation tank 7, Sludge lift pump 701, Connecting port 702, Reclaimed water tank 8, Reclaimed water lift pump 801, Sludge clarifier 9, Sludge transfer pump 901, Filter press 10, Pipeline 11, Vacuum belt dewatering machine 12. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: A water purification device tailwater treatment system, such as Figure 2 As shown, the system includes a reclaimed water tank 8, a sludge sedimentation tank 7, a sludge lift pump 701, a sludge clarifier 9, a sludge transfer pump 901, a filter press 10, and a reclaimed water lift pump 801. The reclaimed water tank 8 stores siphon water generated by the water purification device 6, the sludge sedimentation tank 7 stores sludge water generated by the water purification device 6, and the top of the sludge sedimentation tank 7 has a connecting port 702 for the upper clear liquid to flow into the reclaimed water tank 8. The sludge lift pump 701 is used to transport the sludge from the bottom of the sludge sedimentation tank 7 to the sludge clarifier 9. The top of the sludge clarifier 9 is connected to the reclaimed water tank 8 via a pipe 11. The sludge transfer pump 901 is used to transport the sludge from the bottom of the sludge clarifier 9 to the filter press 10, the outlet of the filter press 10 is connected to the reclaimed water tank 8 via a pipe 11, and the reclaimed water lift pump 801 is used to transport the reclaimed water in the reclaimed water tank 8 to the raw water tank 1.

[0019] Specifically, the reuse tank 8 is connected to the water purification device 6 via pipe 11. The siphon water produced after purification by the water purification device 6 flows into the reuse tank 8 through pipe 11. The sludge sedimentation tank 7 is connected to the water purification device 6 via pipe 11. The sludge water produced after purification by the water purification device 6 flows into the sludge sedimentation tank 7 through pipe 11. The sludge water is left to settle in the sludge sedimentation tank 7 for a period of time until it forms upper and lower layers. The clear liquid in the upper layer flows into the reuse tank 8 through the connecting port 702 set at the top of the sludge sedimentation tank 7, while the sludge in the lower layer is transported to the sludge clarifier 9 by the sludge lift pump 701. After being treated by the sludge clarifier 9, the sludge forms upper and lower layers. The clear liquid in the upper layer flows into the reuse tank 8 through pipe 11, while the sludge in the lower layer is transported to the filter press 10 by the sludge transfer pump 901. The filter press 10 produces slurry and sludge cake after treating the sludge. The slurry flows into the reuse tank 8 through pipe 11, while the sludge cake is transported off-site. The reclaimed water tank 8 collects the siphon water from the water purification device 6, the clear liquid from the sludge sedimentation tank 7, the clear liquid from the sludge clarifier 9, and the slurry from the filter press 10, and mixes them to form reclaimed water. The reclaimed water is then transported to the raw water tank 1 by the reclaimed water lift pump 801, where it mixes with the raw water in the raw water tank 1 and is then purified by the water purification device 6. This cycle continues.

[0020] It should be noted that during the process of injecting sludge into the sludge settling tank 7 and during the settling process, the connecting port 702 at the top of the sludge settling tank 7 is closed, meaning there is no connection between the sludge settling tank 7 and the reuse tank 8. Only after the sludge has settled does the connecting port 702 open, connecting the sludge settling tank 7 to the reuse tank 8, allowing the supernatant to flow into the reuse tank 8. Preferably, a valve 306 can be installed at the connecting port 702, and the opening and closing of the connecting port 702 can be controlled by opening and closing the valve 306.

[0021] Preferably, the filter press 10 is connected to a dewatering agent dosing device 5 via a pipe 11. During the process of the filter press 10 treating the sludge, the dewatering agent dosing device 5 simultaneously injects dewatering agent into the filter press 10 via the pipe 11.

[0022] Furthermore, such as Figure 2 As shown, the raw water in the raw water tank 1 is pumped to the pipeline mixer 2 by the raw water lift pump 101, and then mixed with the water treatment agent in the pipeline mixer 2 before flowing to the water purification device 6. The water treatment agent includes flocculants and coagulants, specifically:

[0023] The pipeline mixer 2 is connected to a flocculant dosing device 3 and a coagulant aid dosing device 4. The flocculant dosing device 3 is used to inject flocculant into the pipeline mixer 2, and the coagulant aid dosing device 4 is used to inject coagulant aid into the pipeline mixer 2.

[0024] The flocculant dosing device 3, the coagulant aid dosing device 4, and the dehydrating agent dosing device 5 all include a tank body 301. A rotating shaft 302 is installed inside the tank body 301. One end of the rotating shaft 302 passes through the tank body 301 and is connected to the output end of a motor 303. A paddle 304 is installed at the other end of the rotating shaft 302. A valve 306 is installed on the outlet pipe 305 of the tank body 301. Preferably, the tank body 301 is made of corrosion-resistant rubber-lined tank to achieve corrosion protection. The rotating shaft 302 and the paddle 304 are made of stainless steel. The pipes 11 used to connect the pipeline mixer 2 and the flocculant dosing device 3, the pipes 11 used to connect the pipeline mixer 2 and the coagulant aid dosing device 4, and the pipes 11 used to connect the dehydrating agent dosing device 5 and the filter press 10 are all made of UPVC material, while the remaining pipes 11 are made of carbon steel.

[0025] Furthermore, the raw water booster pump 101 is connected to the pipeline mixer 2 through the inlet pipe 102, and an inlet turbidity meter 103 is installed on the inlet pipe 102; by setting the inlet turbidity meter 103, the turbidity of the inlet water flowing into the pipeline mixer 2 can be monitored.

[0026] Furthermore, the purified water outlet of the water purification device 6 is connected to the water outlet pipe 601, and is connected to the water purification tank through the water outlet pipe 601. That is, the purified water produced by the water purification device 6 flows into the water purification tank through the pipe 11. In order to monitor the turbidity of the purified water, a water turbidity meter 602 is installed on the water outlet pipe 601.

[0027] Furthermore, if the quality of gypsum is not a concern, the sludge in the sludge sedimentation tank 7 can be discharged directly into the vacuum belt dewatering machine 12 in the limestone-gypsum wet desulfurization system for dewatering. That is, the sludge lifting pump 701 is connected to the vacuum belt dewatering machine 12 through the pipe 11. The sludge lifting pump 701 is used to transport the sludge at the bottom of the sludge sedimentation tank 7 to the vacuum belt dewatering machine 12.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A wastewater treatment system for a water purification device, comprising a reclaimed water tank (8), a sludge sedimentation tank (7), a sludge lift pump (701), a sludge clarifier (9), a sludge transfer pump (901), a filter press (10), and a reclaimed water lift pump (801), characterized in that, The reclaimed water tank (8) stores siphon water generated by the water purification device (6), and the sludge sedimentation tank (7) stores sludge water generated by the water purification device (6). The top of the sludge sedimentation tank (7) is provided with a connecting port (702) for the upper clear liquid inside to flow to the reclaimed water tank (8). The sludge lift pump (701) is used to transport the sludge at the bottom of the sludge sedimentation tank (7) to the sludge clarifier (9). The top of the sludge clarifier (9) is connected to the reclaimed water tank (8) through a pipe (11). The sludge transfer pump (901) is used to transport the sludge at the bottom of the sludge clarifier (9) to the filter press (10). The outlet of the filter press (10) is connected to the reclaimed water tank (8) through a pipe (11). The reclaimed water lift pump (801) is used to transport the reclaimed water in the reclaimed water tank (8) to the raw water tank (1).

2. The tailwater treatment system of a water purification device according to claim 1, characterized in that, The filter press (10) is connected to a dehydrating agent dosing device (5) via a pipe (11), and the dehydrating agent dosing device (5) injects dehydrating agent into the filter press (10) via the pipe (11).

3. The tailwater treatment system of a water purification device according to claim 1, characterized in that, The raw water in the raw water tank (1) is transported to the pipeline mixer (2) by the raw water lift pump (101), and after being mixed with the water treatment agent in the pipeline mixer (2), it flows to the water purification device (6).

4. The tailwater treatment system of a water purification device according to claim 3, characterized in that, The pipeline mixer (2) is connected to a flocculant dosing device (3) and a coagulant aid dosing device (4). The flocculant dosing device (3) is used to inject flocculant into the pipeline mixer (2), and the coagulant aid dosing device (4) is used to inject coagulant aid into the pipeline mixer (2).

5. The tailwater treatment system of a water purification device according to claim 3, characterized in that, The raw water booster pump (101) is connected to the pipeline mixer (2) through the inlet pipe (102), and an inlet turbidity meter (103) is installed on the inlet pipe (102).

6. The tailwater treatment system of a water purification device according to claim 1, characterized in that, The water purification device (6) has a water outlet connected to a water outlet pipe (601) and is connected to a water purification tank through the water outlet pipe (601). A water turbidity meter (602) is installed on the water outlet pipe (601).

7. The tailwater treatment system of a water purification device according to claim 1, characterized in that, The sludge lift pump (701) is also used to transport the sludge at the bottom of the sludge sedimentation tank (7) to the vacuum belt dewatering machine (12).

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