A water supplementing device for improving water quality of small and medium-sized lakes in polluted cities

Abstract

This utility model discloses a water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities, relating to the field of wastewater treatment technology. It includes an anoxic upflow biological filter and an aerobic upflow biological filter, with the anoxic upflow biological filter located to the left of the aerobic upflow biological filter. Both the anoxic and aerobic upflow biological filters have mounting frames at their bottom inner sides, and a scraping mechanism is installed through the inner side of each mounting frame. This utility model uses an inclined scraper in the scraping mechanism to push sludge towards the sludge discharge pipe. Simultaneously, a limiting frame in the loosening mechanism drives a loosening plate to rotate and reciprocate laterally, allowing the loosening plate to quickly and extensively loosen the settled sludge. This makes it easier for the scraper to scrape the sludge, avoiding clogging caused by sludge hardening and making it easier for the sludge to pass through the sludge discharge pipe, reducing the probability of blockage within the pipe.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities. Background Technology

[0002] The source water has complex water quality, large volume, large water area, complex surrounding environment, and is often unattended.

[0003] According to announcement number CN212669333U, a water replenishment device for improving the water quality of polluted small and medium-sized urban lakes includes an inlet system, an anoxic zone, an aerobic zone, and an outlet system connected in sequence. The inlet system pumps water from the polluted lake into the anoxic zone, where the wastewater is purified by the packing material and biofilm in the anoxic and aerobic zones. Finally, the treated water is discharged back into the lake to replenish the lake.

[0004] Regarding the aforementioned solutions, the water replenishment device provided can treat and replenish the water of the same lake, or treat the polluted water of one lake and use it to replenish the water of another lake. However, in actual use, the residual sludge at the bottom of the anoxic upflow biological filter and the aerobic upflow biological filter tends to harden over time, leading to blockage. Utility Model Content

[0005] The purpose of this invention is to provide a water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities, comprising anoxic upflow biological filter and an aerobic upflow biological filter, wherein the anoxic upflow biological filter is located to the left of the aerobic upflow biological filter.

[0007] Both the anoxic upflow biological filter and the aerobic upflow biological filter are equipped with mounting frames at their bottom inner sides. A scraping mechanism is installed through the inner side of the mounting frame, which is used to push the sludge towards the sludge discharge inlet. The scraping mechanism includes a servo motor installed inside the mounting frame and a support shaft connected to the output end of the servo motor via a coupling. A loosening mechanism is installed on the outer side of the support shaft, which is used to loosen the settled sludge over a large area and quickly.

[0008] Preferably, a support frame is welded to the bottom of the outer side of the support shaft, and a scraper is fixedly connected to the bottom of the support frame, and the scraper is used to push the sludge; a rubber pad is provided on the outer side of the bottom end of the scraper for protection.

[0009] Preferably, the loosening mechanism includes a limiting cylinder welded to the support shaft and a guide rod welded to the anoxic upflow biological filter and the aerobic upflow biological filter. A limiting frame is slidably connected between the limiting cylinder and the guide rod, and the guide rod is used to make the limiting frame move back and forth laterally.

[0010] Preferably, the limiting frame includes an L-shaped rod and a sliding frame welded to the bottom end of the L-shaped rod. A loosening plate is welded to the bottom end of the limiting frame, and the loosening plate is used to loosen the sludge. The loosening plate is set in a serrated shape.

[0011] Preferably, a sealing ring is provided at the opening of the limiting cylinder, and the sealing ring is used to prevent mud and water from entering the limiting cylinder.

[0012] Preferably, a packing carrier is provided in the middle of the inner side of both the anoxic upflow biological filter and the aerobic upflow biological filter, and packing is provided on the packing carrier; an anaerobic upflow biological filter outlet pipe is provided between the anoxic upflow biological filter and the aerobic upflow biological filter, and an inlet pipe is provided at the bottom left side of the anoxic upflow biological filter, and the inlet pipe is used to send polluted water from the lake to the anoxic upflow biological filter.

[0013] Preferably, an outlet pipe is provided at the top right side of the aerobic upflow biological filter, an aeration pipe is provided at the rear end of the anoxic upflow biological filter and the aerobic upflow biological filter, and a backwashing air pipe is provided at the front end of the anoxic upflow biological filter and the aerobic upflow biological filter.

[0014] Preferably, the front end of the anoxic upflow biological filter and the aerobic upflow biological filter is provided with a backwash water pipe connected to the effluent pipe below the backwash air pipe, and the bottom end of the anoxic upflow biological filter and the aerobic upflow biological filter is provided with a sludge discharge pipe connected to each other. The end of the sludge discharge pipe away from the anoxic upflow biological filter and the aerobic upflow biological filter is connected to the sludge storage and treatment tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities uses an inclined scraper in the cleaning mechanism to push sludge towards the sludge discharge pipe. At the same time, the loosening mechanism uses a limit frame to rotate the loosening plate while making it reciprocate laterally. This allows the loosening plate to loosen the sludge at the bottom over a large area and quickly, making it easier for the scraper to scrape the sludge. By adopting this method, blockages caused by hardened sludge can be avoided, and the sludge can pass through the sludge discharge pipe more easily, reducing the probability of blockage in the sludge discharge pipe. Attached Figure Description

[0017] Figure 1This is a three-dimensional cross-sectional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention from a first-person perspective;

[0019] Figure 3 This is a three-dimensional structural diagram of the present invention from a second perspective;

[0020] Figure 4 This is a three-dimensional structural diagram of the cleaning mechanism and loosening mechanism of this utility model;

[0021] Figure 5 This is a three-dimensional exploded view of the limiting cylinder and limiting frame of this utility model.

[0022] In the diagram: 1. Anoxic upflow biological filter; 2. Aerobic upflow biological filter; 3. Mounting frame; 4. Scraping mechanism; 401. Servo motor; 402. Support shaft; 403. Support frame; 404. Scraper; 5. Loosening mechanism; 501. Limiting cylinder; 502. Limiting frame; 503. Guide rod; 504. Loosening plate; 6. Inlet pipe; 7. Anoxic zone outlet pipe; 8. Outlet pipe; 9. Sludge discharge pipe; 10. Backwash water pipe; 11. Backwash air pipe; 12. Aeration pipe. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-3This utility model provides a technical solution: a water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities, comprising an anoxic upflow biological filter 1 and an aerobic upflow biological filter 2. The anoxic upflow biological filter 1 is located to the left of the aerobic upflow biological filter 2. Both the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2 have a packing carrier in the middle of their inner sides. The packing carrier is a pebble layer, and packing material, specifically fiber bundle packing, is placed on the packing carrier. An anoxic zone outlet pipe 7 is installed between the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2. An inlet pipe 6 is installed at the bottom left side of the anoxic upflow biological filter 1, used to deliver polluted water from the lake to the anoxic upflow biological filter. In section 1, an outlet pipe 8 is installed at the top right side of the aerobic upflow biological filter 2. An aeration pipe 12 is connected to the rear end of the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2. A backwashing air pipe 11 is connected to the front end of the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2. A backwashing water pipe 10 connected to the outlet pipe 8 is installed below the backwashing air pipe 11 at the front end of the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2. A sludge discharge pipe 9 is connected to the bottom end of the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2. The end of the sludge discharge pipe 9 away from the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2 is connected to the sludge storage and treatment tank.

[0025] Specifically, polluted water from the lake is sent to the anoxic upflow biological filter 1 through the inlet pipe 6, and then sent to the aerobic upflow biological filter 2 through the outlet pipe 7 of the anoxic zone. During this process, the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2 rely on the biofilm attached to the surface of the packing material to adsorb, oxidize and decompose pollutants, thereby purifying the wastewater. The fiber bundle packing material layer also has the function of physical adsorption and interception. The treated clean water is discharged into the lake through the outlet pipe 8 to replenish the lake water.

[0026] Specifically, the anoxic upflow biological filter 1 is aerated and micro-oxygenated through aeration pipe 12 to keep it in an anoxic state, while the aerobic upflow biological filter 2 is aerated and oxygenated through aeration pipe 12.

[0027] Specifically, the packing material in the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2 needs to be backwashed regularly. The treated water is sent to the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2 through the backwash water pipe 10. When the packing material is periodically removed and cleaned, it is fully relaxed to a free and loose state. The adsorbed suspended solids and aged biofilm are washed away by air washing and air-water combined scrubbing, so that the biofilm on the packing material is always kept in a highly efficient state.

[0028] exist Figure 1 , Figure 4and Figure 5 In the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2, an installation frame 3 is installed at the bottom of the inner side. A scraping mechanism 4 is installed through the inner side of the installation frame 3. The scraping mechanism 4 is used to push the sludge towards the sludge discharge inlet. The scraping mechanism 4 includes a servo motor 401 installed inside the installation frame 3 and a support shaft 402 connected to the output end of the servo motor 401 through a coupling. The servo motor 401 is used to drive the support shaft 402 to rotate. A support frame 403 is welded to the bottom of the outer side of the support shaft 402. A scraper 404 is fixedly connected to the bottom of the support frame 403. The scraper 404 is used to push the sludge.

[0029] Specifically, the scraper 404 has an inclination angle of 15°-30° and a gap of ≤5mm between the scraper 404 and the bottom of the pool to ensure thorough scraping.

[0030] Specifically, the servo motor 401 is started, and the output end of the servo motor 401 drives the support shaft 402, support frame 403 and limit frame 502 to rotate, so that the sludge is pushed in the discharge direction by the scraper 404 inclined at the bottom of the support frame 403, so that the sludge is introduced into the discharge pipe 9 by gravity.

[0031] exist Figure 4 In the middle: A rubber pad is provided on the outer side of the bottom end of the scraper 404 for protection.

[0032] Specifically, rubber pads are used to prevent the scraper 404 from making hard contact with the bottom of the pool, thus providing a protective function.

[0033] exist Figure 1 , Figure 4 and Figure 5 In the middle: A loosening mechanism 5 is provided on the outer side of the support shaft 402. The loosening mechanism 5 is used to loosen the sludge at the bottom over a large area and quickly. The loosening mechanism 5 includes a limiting cylinder 501 welded to the support shaft 402 and a guide rod 503 welded to the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2. A limiting frame 502 is slidably connected between the limiting cylinder 501 and the guide rod 503. The limiting cylinder 501 is used to support and limit the limiting frame 502 so that the limiting frame 502 can move linearly. The guide rod 503 is used to make the limiting frame 502 move laterally back and forth. The limiting frame 502 includes an L-shaped rod and a sliding frame welded to the bottom end of the L-shaped rod. A loosening plate 504 is welded to the bottom end of the limiting frame 502. The loosening plate 504 is used to loosen the sludge. The loosening plate 504 is set in a sawtooth shape.

[0034] Specifically, since the limiting frame 502 is slidably connected to the limiting cylinder 501 and the guide rod 503, and the guide rod 503 is designed with a wave-like structure, the limiting frame 502 drives the loosening plate 504 to rotate while making a lateral reciprocating motion. This allows the loosening plate 504 to loosen the sludge at the bottom over a large area and quickly, making it easier for the scraper 404 to scrape the sludge. By adopting this method, the sludge can pass through the sludge discharge pipe 9 more easily, thereby reducing the probability of blockage in the sludge discharge pipe 9.

[0035] exist Figure 5 In the middle: A sealing ring is provided at the opening of the limiting cylinder 501. The sealing ring is used to prevent mud and water from entering the limiting cylinder 501.

[0036] Specifically, a sealing ring is used to seal the limit frame 502 and the limit cylinder 501 to prevent mud and water from entering the limit cylinder 501.

[0037] Polluted water from the lake is transported to the anoxic upflow biological filter 1 through inlet pipe 6, and then to the aerobic upflow biological filter 2 through outlet pipe 7. During this process, the anoxic upflow biological filter 1 is aerated and micro-oxygenated through aeration pipe 12 to maintain an anoxic state, and the aerobic upflow biological filter 2 is also aerated through aeration pipe 12. Simultaneously, both the anoxic upflow and aerobic upflow biological filters rely on the biofilm attached to the surface of the packing material to adsorb, oxidize, and decompose pollutants, thus purifying the wastewater. The fiber bundle packing layer also has a physical adsorption and retention function. The treated water is discharged into the lake through the outlet pipe 8 to replenish the lake. During this process, sludge can be sent to the sludge storage and treatment tank through the sludge discharge pipe 9. The packing material in the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2 needs to be backwashed regularly. During operation, the treated water is sent to the anoxic upflow biological filter 1 and the aerobic upflow biological filter 2 through the backwash water pipe 10. When the packing material is regularly removed and cleaned, the packing material is fully relaxed to a free and loose state. The adsorbed suspended solids and aged biofilm are washed off and discharged through air washing and air-water combined scrubbing, so that the biofilm on the packing material is always kept in a high-efficiency state.

[0038] The servo motor 401 is started periodically. The output end of the servo motor 401 drives the support shaft 402, support frame 403 and limit frame 502 to rotate. This pushes the sludge towards the sludge discharge pipe 9 through the scraper 404 that is inclined at the bottom of the support frame 403. At the same time, through the sliding action of the limit frame 502, the limit cylinder 501 and the guide rod 503, the limit frame 502 drives the loosening plate 504 to rotate and make lateral reciprocating motion. This allows the loosening plate 504 to loosen the sludge at the bottom in a large area and quickly, making it easier for the scraper 404 to scrape the sludge.

[0039] The components are made of corrosion-resistant stainless steel (such as 316L). The 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.

[0040] 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 water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities, comprising an anoxic upflow biological filter (1) and an aerobic upflow biological filter (2), wherein the anoxic upflow biological filter (1) is located to the left of the aerobic upflow biological filter (2); characterized in that: The bottom of both the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2) are equipped with mounting frames (3). A scraping mechanism (4) is installed through the inner side of the mounting frame (3). The scraping mechanism (4) is used to push the sludge towards the sludge discharge inlet. The scraping mechanism (4) includes a servo motor (401) installed inside the mounting frame (3) and a support shaft (402) connected to the output end of the servo motor (401) via a coupling. A loosening mechanism (5) is installed on the outer side of the support shaft (402). The loosening mechanism (5) is used to loosen the sludge at the bottom over a large area quickly.

2. The water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities according to claim 1, characterized in that: A support frame (403) is welded to the bottom of the outer side of the support shaft (402). A scraper (404) is fixedly connected to the bottom of the support frame (403), and the scraper (404) is used to push the sludge. A rubber pad is provided on the outer side of the bottom of the scraper (404) for protection.

3. A water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities according to claim 2, characterized in that: The loosening mechanism (5) includes a limiting cylinder (501) welded to the support shaft (402) and a guide rod (503) welded to the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2). A limiting frame (502) is slidably connected between the limiting cylinder (501) and the guide rod (503), and the guide rod (503) is used to make the limiting frame (502) move laterally back and forth.

4. A water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities according to claim 3, characterized in that: The limiting frame (502) includes an L-shaped rod and a sliding frame welded to the bottom end of the L-shaped rod. A loosening plate (504) is welded to the bottom end of the limiting frame (502), and the loosening plate (504) is used to loosen the sludge. The loosening plate (504) is set in a serrated shape.

5. A water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities according to claim 3, characterized in that: A sealing ring is provided at the opening of the limiting cylinder (501), and the sealing ring is used to prevent mud and water from entering the limiting cylinder (501).

6. A water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities according to claim 1, characterized in that: Both the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2) have packing carriers in the middle of their inner sides, and packing is placed on the packing carriers; an anoxic zone outlet pipe (7) is set between the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2); an inlet pipe (6) is set at the bottom left side of the anoxic upflow biological filter (1), and the inlet pipe (6) is used to send polluted water from the lake to the anoxic upflow biological filter (1).

7. A water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities according to claim 1, characterized in that: An outlet pipe (8) is provided at the top right side of the aerobic upflow biological filter (2). An aeration pipe (12) is provided at the rear end of the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2). A backwashing air pipe (11) is provided at the front end of the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2).

8. A water replenishment device for improving the water quality of small and medium-sized lakes in polluted cities according to claim 7, characterized in that: The front ends of the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2) are provided with a backwash water pipe (10) connected to the effluent pipe (8) below the backwash air pipe (11). The bottom ends of the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2) are provided with a sludge discharge pipe (9). The end of the sludge discharge pipe (9) away from the anoxic upflow biological filter (1) and the aerobic upflow biological filter (2) is connected to the sludge storage and treatment tank.

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