A device for collecting and recycling backwash water of an integrated water purifier of a waste incineration plant

Abstract

The utility model discloses a kind of for garbage incineration plant integrated water purifier backwash water collection and recovery device, it is related to wastewater recovery technical field, including sand trap and reamer pump;The sand trap includes primary sedimentation tank, secondary sedimentation tank and clean water pool, and the reamer pump is installed in the inside of primary sedimentation tank, secondary sedimentation tank and clean water pool.The utility model carries out the step-by-step sedimentation of silt to integrated backwash water and sludge water by sand trap, improves water purification efficiency, can be recycled upper layer clean water to integrated import end by submersible pump, to carry out clean water recycling and reuse, while a large amount of sludge in pool is cleaned automatically by reamer pump, and pool bottom sludge is transported to plant biochemical pool, so that improve cleaning efficiency while reducing artificial usage amount, double target of backwash water reuse and sludge efficient disposal is achieved simultaneously by above-mentioned mode;By net bag, multistage interception to floating matter can be realized, to improve water quality, reduce pump body jamming probability.

Description

Technical Field

[0001] This utility model relates to the field of wastewater recycling technology, specifically to a device for collecting and recycling backwash water from an integrated water purifier in a waste incineration plant. Background Technology

[0002] The waste-to-energy plant primarily incinerates municipal solid waste, while also co-incinerating dried sludge. The waste and sludge are processed together to generate electricity. The plant's water supply comes from surface river water, which is introduced from the west side of the plant. After being metered, the water is treated by two integrated fully automatic water purifiers and then stored in the production and fire-fighting water storage tank.

[0003] The factory is equipped with two integrated fully automatic water purifiers. The original design allowed the backwash water and sludge discharge water to be directly discharged into the mountain stream outside the factory via the rainwater pipe network. No sludge disposal system was designed. The direct discharge of backwash water not only caused a large waste of water resources, but also the discharge of sludge water into the mountain stream had a negative impact on the natural environment. Utility Model Content

[0004] The purpose of this utility model is to provide a backwash water collection and recycling device for an integrated water purifier in a waste incineration plant, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a backwash water collection and recycling device for an integrated water purifier in a waste incineration plant, comprising a sedimentation tank and a cutter pump; The sedimentation tank includes a primary sedimentation tank, a secondary sedimentation tank, and a clear water tank. The cutter pump is installed inside the primary sedimentation tank, the secondary sedimentation tank, and the clear water tank. A submersible pump is installed at the rear end of the inner side of the clear water tank. An integrated mud and water inlet is opened at the front end of the primary sedimentation tank. A water inlet hole one is opened at the rear end of the left side of the secondary sedimentation tank. A water inlet hole two is opened at the front end of the left side of the clear water tank. Both water inlet hole one and water inlet hole two have support grooves inside. A support frame is engaged and connected to the inner side of the support groove. A net is connected to the right side of the support frame.

[0006] Preferably, the primary sedimentation tank, the secondary sedimentation tank, and the clear water tank are arranged sequentially from left to right.

[0007] Preferably, a level switch II is installed on the inner side of the primary sedimentation tank, the secondary sedimentation tank, and the clear water tank. The level switch II is used in conjunction with the cutter pump to control the start and stop of the cutter pump.

[0008] Preferably, a level switch is installed on the inner side of the clear water tank. The level switch is used in conjunction with the submersible pump, and the level switch is used to control the start and stop of the submersible pump.

[0009] Preferably, the support frame includes a horizontal plate, a frame body fixedly connected to the bottom end of the horizontal plate, and a handle fixedly connected to the top end of the horizontal plate.

[0010] Preferably, the internal threaded connection of the support frame is a bolt that is threadedly connected to the secondary sedimentation tank and the clear water tank, and the bolts are symmetrically arranged about the central axis of the support frame.

[0011] Preferably, the aperture of the mesh bag inside the first water inlet is larger than the aperture of the mesh bag inside the second water inlet.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This integrated water purifier backwash water collection and recycling device for waste incineration plants, by adding a sedimentation tank, facilitates the step-by-step sedimentation of sediment in the integrated backwash water and sludge discharge water, improving water purification efficiency. By adding a submersible pump, it can be used to recycle the upper layer of clean water to the integrated inlet for recycling and reuse. At the same time, a cutter pump automatically cleans a large amount of sludge in the tank and transports the sludge at the bottom of the tank to the plant's biochemical tank, thereby improving cleaning efficiency while reducing manual labor. Through the above methods, the dual goals of backwash water reuse and efficient sludge disposal are achieved simultaneously.

[0013] 2. This backwash water collection and recycling device for an integrated water purifier in a waste incineration plant features nets installed in both inlet 1 and inlet 2 via a support frame. These nets allow for multi-stage interception of floating debris, thereby improving water quality and reducing the probability of pump blockage. Furthermore, the support frame and sedimentation tank are detachably connected via bolts, facilitating subsequent replacement and cleaning, making it convenient to use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a three-dimensional structural diagram of the net and support frame of this utility model; Figure 4 This is a three-dimensional structural diagram of the sedimentation tank of this utility model; Figure 5 This is a top view of the structure of this utility model.

[0015] In the diagram: 1. Grit chamber; 101. Primary sedimentation tank; 102. Secondary sedimentation tank; 103. Clear water tank; 2. Integrated mud and water inlet; 3. Inlet hole one; 4. Inlet hole two; 5. Submersible pump; 6. Cutter pump; 7. Net bag; 8. Support frame; 9. Bolt; 10. Support groove. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1 , Figure 4 and Figure 5 This utility model provides a technical solution: a backwash water collection and recycling device for an integrated water purifier in a waste incineration plant, comprising a sedimentation tank 1 and a cutter pump 6; exist Figure 1 , Figure 4 and Figure 5 In the middle: the sedimentation tank 1 includes a primary sedimentation tank 101, a secondary sedimentation tank 102 and a clear water tank 103. The primary sedimentation tank 101, the secondary sedimentation tank 102 and the clear water tank 103 are arranged sequentially from left to right. The sedimentation of the integrated backwash water and sludge discharge water is carried out through the primary sedimentation tank 101, the secondary sedimentation tank 102 and the clear water tank 103.

[0018] Specifically, the muddy wastewater overflows into the primary sedimentation tank 101 through the integrated mud-water inlet 2 at the front end of the primary sedimentation tank 101, and then overflows into the secondary sedimentation tank 102 through the inlet hole 3 on the left side of the secondary sedimentation tank 102. Finally, it overflows into the clear water tank 103 through the inlet hole 4 on the left side of the clear water tank 103, so as to achieve step-by-step sedimentation. At the same time, the existing automatic dosing device of the integrated water purifier automatically adds flocculant at the integrated mud-water inlet 2 of the primary sedimentation tank 101 to accelerate the sedimentation of the floating sludge in the water. The sedimentation tank 1 is made of reinforced concrete and has a length of 25m, a width of 5m, and a height of 1.5m. It is located on the open ground to the southeast of the integrated structure.

[0019] exist Figure 1 , Figure 4 and Figure 5 In the middle section: Each of the primary sedimentation tank 101, secondary sedimentation tank 102, and clear water tank 103 is equipped with a high-level and a low-level position, which are arranged adjacent to each other in the left-right direction. The cutter pump 6 is installed inside the primary sedimentation tank 101, secondary sedimentation tank 102, and clear water tank 103, and is located at the low-level position. The cutter pump 6 automatically cleans a large amount of sludge in the primary sedimentation tank 101, secondary sedimentation tank 102, and clear water tank 103. A level switch 2 is installed on the inner side of each of the primary sedimentation tank 101, secondary sedimentation tank 102, and clear water tank 103. The level switch 2 is used in conjunction with the cutter pump 6 to control the start and stop of the cutter pump 6.

[0020] Specifically, the start and stop of the cutter pump 6 at the low level in the primary sedimentation tank 101, secondary sedimentation tank 102 and clear water tank 103 are controlled by the level switch 2. It automatically stops when the liquid level is below 0.5m and automatically starts when the liquid level is above 1m, so as to automatically clean up the large amount of sludge in the primary sedimentation tank 101, secondary sedimentation tank 102 and clear water tank 103, and transport the sludge at the bottom of the tank to the plant's biochemical tank. The sludge is then transported to the incinerator for incineration using the existing sludge desludge machine and sludge conveyor, so as to realize the recovery of calorific value from the sludge.

[0021] exist Figure 1 , Figure 4 and Figure 5 In the middle: A submersible pump 5 is installed at the rear end of the inner side of the clear water tank 103. A level switch 1 is installed inside the clear water tank 103. The level switch 1 is used in conjunction with the submersible pump 5. The level switch 2 is used to control the start and stop of the submersible pump 5. An integrated mud and water inlet 2 is opened at the front end of the primary sedimentation tank 101. A water inlet 1 3 is opened at the rear end of the left side of the secondary sedimentation tank 102. A water inlet 2 4 is opened at the front end of the left side of the clear water tank 103.

[0022] Specifically, after the sludge settles in the clear water tank 103, the upper layer of clear water overflows to the submersible pump 5 at the rear end. With the help of the liquid level switch, the submersible pump 5 starts when the liquid level in the clear water tank 103 is high and automatically stops when the liquid level is low, so as to transport the upper layer of clear water in the clear water tank 103 to the integrated inlet end for clear water recycling and reuse.

[0023] exist Figures 1-5 In the middle: both the first water inlet 3 and the second water inlet 4 have a support groove 10 inside. The inner side of the support groove 10 is engaged with a support frame 8. The support groove 10 prevents the support frame 8 from shifting laterally. The support frame 8 includes a horizontal plate, a frame body fixedly connected to the bottom of the horizontal plate, and a handle fixedly connected to the top of the horizontal plate. The internal thread of the support frame 8 is connected with bolts 9 that are threaded to the secondary sedimentation tank 102 and the clear water tank 103. The bolts 9 are used to achieve stable installation of the support frame 8 inside the first water inlet 3 and the second water inlet 4. The bolts 9 are symmetrically arranged about the central axis of the support frame 8.

[0024] Specifically, the support frame 8 and the sedimentation tank 1 are detachably connected by bolts 9, which makes it easy to replace and clean them later, and is more convenient to use.

[0025] exist Figures 1-3 and Figure 5 In the middle: a net bag 7 is connected to the right side of the support frame 8. The diameter of the net bag 7 inside the water inlet hole 1 3 is larger than the diameter of the net bag 7 inside the water inlet hole 2 4.

[0026] Specifically, by installing nets 7 through support frames 8 in both water inlet 3 and water inlet 4, multi-stage interception of floating objects can be achieved through the nets 7, thereby improving water quality and reducing the probability of pump blockage.

[0027] Sludge-laden wastewater overflows into the primary sedimentation tank 101 through the integrated sludge inlet 2 at the front end of the primary sedimentation tank 101. Then, it overflows into the secondary sedimentation tank 102 through the inlet 3 on the left side, and finally overflows into the clear water tank 103 through the inlet 4 on the left side, thus achieving staged sedimentation. During this process, a net 7 can be used to intercept floating debris at multiple stages, thereby improving water quality. Simultaneously, the existing automatic dosing device of the integrated water purifier automatically adds flocculant at the integrated sludge inlet 2 of the primary sedimentation tank 101 to accelerate the sedimentation of floating sludge. After the sludge settles in the clear water tank 103, the upper layer of clear water overflows to the submersible pump 5 at the rear end. The submersible pump 5, in conjunction with a level switch, starts when the level in the clear water tank 103 is high and automatically stops when the level is low, so that the upper layer of clear water in the clear water tank 103 can be transported to the integrated inlet end. The recycling and reuse of clean water is achieved by controlling the start and stop of the cutter pump 6 at the low level in the primary sedimentation tank 101, secondary sedimentation tank 102, and clear water tank 103 through a level switch. The pump automatically stops when the liquid level is below 0.5m and automatically starts when the liquid level is above 1m. This allows for the automatic removal of a large amount of sludge in the primary sedimentation tank 101, secondary sedimentation tank 102, and clear water tank 103, and the sludge at the bottom of the tanks is transported to the plant's biochemical tank. The sludge is then transported to the incinerator for incineration using the existing sludge desludge machine and sludge conveyor, thus recovering the calorific value from the sludge. The small amount of sludge at the bottom of the primary sedimentation tank 101, secondary sedimentation tank 102, and clear water tank 103 is handled by periodic cleaning. Specifically, the cutter pump 6 at the low level in the grit chamber 1 is manually started, and two assistants are assigned to use clean water to flush the sludge at the bottom of the tanks to the pump pit of the cutter pump 6, and then transport it to the plant's biochemical tank. Electrical equipment (including but not limited to motors, electric actuators, etc.) is safely powered by an external power source and controlled by a control box. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A backwash water collection and recycling device for an integrated water purifier in a waste incineration plant, comprising a grit chamber (1) and a cutter pump (6). The sedimentation tank (1) includes a primary sedimentation tank (101), a secondary sedimentation tank (102), and a clear water tank (103). The cutter pump (6) is installed inside the primary sedimentation tank (101), the secondary sedimentation tank (102), and the clear water tank (103). A submersible pump (5) is installed at the rear end of the inner side of the clear water tank (103). An integrated mud and water inlet (2) is opened at the front end of the primary sedimentation tank (101). A water inlet hole one (3) is opened at the rear end of the left side of the secondary sedimentation tank (102). A water inlet hole two (4) is opened at the front end of the left side of the clear water tank (103). A support groove (10) is opened inside both the water inlet hole one (3) and the water inlet hole two (4). A support frame (8) is engaged and connected to the inner side of the support groove (10). A net bag (7) is connected to the right side of the support frame (8).

2. The backwash water collection and recycling device for an integrated water purifier in a waste incineration plant according to claim 1, characterized in that: The primary sedimentation tank (101), secondary sedimentation tank (102), and clear water tank (103) are arranged sequentially from left to right.

3. The backwash water collection and recycling device for an integrated water purifier in a waste incineration plant according to claim 2, characterized in that: The inner sides of the primary sedimentation tank (101), the secondary sedimentation tank (102) and the clear water tank (103) are all equipped with level switches. Level switches are used in conjunction with the cutter pump (6) to control the start and stop of the cutter pump (6).

4. The backwash water collection and recycling device for an integrated water purifier in a waste incineration plant according to claim 1, characterized in that: A level switch is installed on the inner side of the clear water tank (103). The level switch is used in conjunction with the submersible pump (5). The level switch is used to control the start and stop of the submersible pump (5).

5. The backwash water collection and recycling device for an integrated water purifier in a waste incineration plant according to claim 1, characterized in that: The support frame (8) includes a horizontal plate, a frame body fixedly connected to the bottom of the horizontal plate, and a handle fixedly connected to the top of the horizontal plate.

6. The backwash water collection and recycling device for an integrated water purifier in a waste incineration plant according to claim 5, characterized in that: The internal threaded connection of the support frame (8) is a bolt (9) that is threaded to the secondary sedimentation tank (102) and the clear water tank (103). The bolt (9) is symmetrically arranged about the central axis of the support frame (8).

7. The backwash water collection and recycling device for an integrated water purifier in a waste incineration plant according to claim 1, characterized in that: The diameter of the mesh pocket (7) inside the first water inlet (3) is larger than the diameter of the mesh pocket (7) inside the second water inlet (4).

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