Biological filter for wastewater treatment

Abstract

The utility model discloses a biological filter for wastewater treatment, which relates to the field of wastewater treatment and comprises a filter main body, a water inlet is mounted on the outer wall of the side surface of the filter main body, a wave-proof plate is fixed on the inner wall of the filter main body, and a first sedimentation tank is arranged on the inner wall of the filter main body close to the bottom of the wave-proof plate. A filter tank is arranged on one side, close to the first sedimentation tank, of the inner wall of the filter tank main body, an aeration tank is arranged on one side, close to the filter tank, of the inner wall of the filter tank main body, and a second sedimentation tank is arranged on one side, close to the aeration tank, of the inner wall of the filter tank main body; a water outlet is formed in one side, far away from the water inlet, of the outer wall of the side surface of the filter tank main body, and activated sludge backflow equipment is mounted on the outer wall of the back surface of the filter tank main body. The wastewater treatment effect of the device can be enhanced, and the device is convenient for a user to operate.

Description

Technical Field

[0001] The utility model relates to the field of wastewater treatment, in particular to a biological filter for wastewater treatment. Background Art

[0002] Compared with other sewage treatment equipment, biological filters can meet the most stringent environmental protection requirements in all regions in any season, do not produce secondary pollution, and have high practical value.

[0003] Existing biological trickling filters usually use a single-direction rotating water distribution pipe to sprinkle water, which makes it difficult to achieve uniform water distribution on the filler, resulting in a reduction in the contact area between sewage and the filler, affecting the sewage purification efficiency. A biological filter for wastewater treatment that can achieve uniform water distribution is now proposed.

[0004] For example, in a patent for a biological filter for wastewater treatment (Announcement No.: CN218968977U), it includes a water filter, an L-shaped water pipe and a two-way rotating water distribution mechanism, wherein the L-shaped water pipe is arranged in the water filter, and the two-way rotating water distribution mechanism is arranged above the water filter; the two-way rotating water distribution mechanism includes an upper connecting sleeve, an upper water distribution pipe, a lower connecting sleeve and a lower water distribution pipe, wherein the upper connecting sleeve and the lower connecting sleeve are respectively rotatably sleeved on the outside of the L-shaped water pipe, and the upper connecting sleeve is located above the lower connecting sleeve. The utility model controls the two-way rotation of the upper and lower water distribution pipes by arranging a two-way rotating water distribution device, thereby realizing uniform spraying of sewage onto the filler, increasing the contact area between the sewage and the filler, and improving the sewage purification efficiency. At the same time, by arranging a filter box to filter the sewage, it can effectively reduce the entry of larger particles into the upper and lower water distribution pipes, and avoid nozzle clogging.

[0005] The above patent improves the sewage purification efficiency and avoids nozzle clogging through a bidirectional rotating water distribution device and a filter box. In daily use, because the device uses fillers to filter wastewater, it can only filter impurities in the wastewater, resulting in the inability to remove organic matter in the wastewater, thereby affecting the wastewater treatment effect and weakening the wastewater treatment effect of the device. Therefore, it is necessary to invent a biological filter for wastewater treatment to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a biological filter for wastewater treatment to solve the problem of weak wastewater treatment effect proposed in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biological filter for wastewater treatment, comprising a filter body, a water inlet is installed on the side outer wall of the filter body, a wave-breaking plate is fixed to the inner wall of the filter body, a first sedimentation tank is arranged on the inner wall of the filter body near the bottom of the wave-breaking plate, a filter tank is arranged on the side of the inner wall of the filter body near the first sedimentation tank, an aeration tank is arranged on the side of the inner wall of the filter body near the filter tank, a second sedimentation tank is arranged on the side of the inner wall of the filter body near the aeration tank, a water outlet is installed on the side of the side outer wall of the filter body away from the water inlet, and an activated sludge return device is installed on the back outer wall of the filter body.

[0008] Preferably, a water filter net is installed on the inner wall of the first sedimentation tank.

[0009] Preferably, a water guiding device is installed on the top outer wall of the first sedimentation tank, and a spraying device is installed on the bottom outer wall of the water guiding device.

[0010] Preferably, a water filter frame is installed on the inner wall of the filter pool, and an activated carbon layer is installed on the inner wall of the water filter frame.

[0011] Preferably, a liquid level sensor is installed on the inner wall of the aeration tank.

[0012] Preferably, a water quality sensor is installed on the inner wall of the second sedimentation tank, and a temperature sensor is installed on one side of the water quality sensor.

[0013] Preferably, a display screen is installed on the side of the back outer wall of the filter tank body away from the activated sludge return device.

[0014] Technical effects and advantages of the utility model:

[0015] 1. In the utility model, wastewater can be introduced into the filter tank body through the water inlet, and the wave-breaking plate on the inner wall of the filter tank body can reduce the buffering of the wastewater, and fall into the first sedimentation tank at the bottom for sedimentation. The impurities in the precipitated water flow can be filtered in the filter tank on one side, and the active substances in the filtered water flow can react in the aeration tank on one side. The reacted water flow can be precipitated again in the second sedimentation tank on one side, and is led out from the outlet connected to the side outer wall, and the activated sludge in the second sedimentation tank can be returned to the first sedimentation tank through the activated sludge return device, so that the wastewater treatment effect of the device is enhanced;

[0016] 2. The operation of the liquid level sensor on the inner wall of the aeration tank in the utility model can control the operation of the water guide equipment installed on the first sedimentation tank and the filter tank through the internal liquid level change, and absorb the water flow in the first sedimentation tank and transmit it through the water filter net and the spray equipment to the activated carbon layer in the water filter frame in the filter tank for filtration. The filtered water flow can be transmitted to the aeration tank through the pump body, and the operation of the water quality sensor and the temperature sensor in the second sedimentation tank can transmit the water quality conditions to the display screen, thereby facilitating the staff to operate the device and making the device easy for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The utility model is a schematic diagram of the overall structure of a biological filter for wastewater treatment.

[0019] Figure 2 The utility model is a schematic diagram of the top view of a biological filter tank for wastewater treatment.

[0020] Figure 3 The utility model is a schematic diagram of the side structure of a biological filter tank for wastewater treatment.

[0021] Figure 4 The utility model is a schematic diagram of the explosion structure of a biological filter tank for wastewater treatment.

[0022] In the figure: 1. Filter tank body; 2. Water inlet; 3. Wave-breaking board; 4. First sedimentation tank; 5. Filtration tank; 6. Aeration tank; 7. Second sedimentation tank; 8. Water outlet; 9. Activated sludge return equipment; 10. Water filter net; 11. Water guide equipment; 12. Spraying equipment; 13. Water filter frame; 14. Activated carbon layer; 15. Liquid level sensor; 16. Water quality sensor; 17. Temperature sensor; 18. Display screen. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-4 A biological filter for wastewater treatment shown in the figure comprises a filter body 1, a water inlet 2 is installed on the side outer wall of the filter body 1, wherein the user can install the water inlet 2 on the side outer wall of the filter body 1, and the water inlet 2 includes a water inlet pipe and a pump body, so that wastewater can be introduced into the filter body 1 through the water inlet 2, the inner wall of the filter body 1 is fixed with a wave-breaking plate 3, and the inner wall of the filter body 1 is provided with a first sedimentation tank 4 near the bottom of the wave-breaking plate 3, wherein the user can fix the wave-breaking plate 3 on the inner wall of the filter body 1, and the first sedimentation tank 4 is provided with a first sedimentation tank 4. The filter tank 4 is arranged on the inner wall of the filter tank body 1, so that the wastewater adsorbed in the water inlet 2 can fall into the first sedimentation tank 4 for sedimentation after being buffered by the wave-breaking plate 3. A filter tank 5 is arranged on the inner wall of the filter tank body 1 close to the first sedimentation tank 4, wherein the user can arrange the filter tank 5 on the side of the first sedimentation tank 4, so that the precipitated water flow inside the first sedimentation tank 4 can be filtered in the filter tank 5. An aeration tank 6 is arranged on the inner wall of the filter tank body 1 close to the filter tank 5, wherein the user can arrange the aeration tank 6 in the filter tank 5, so that the filtered water flow can react with aerobic bacteria in the aeration tank 6, meet the oxygen required by aerobic microorganisms and the mixing conditions of sewage and activated sludge in full contact, so that the active substances in the water flow in the aeration tank 6 can be exiled to the air, and the inner wall of the filter tank body 1 is close to the aeration tank 6. The side of the aeration tank 6 is provided with a second sedimentation tank 7, wherein the user can set the second sedimentation tank 7 on one side of the aeration tank 6, so that the water flow after the reaction in the aeration tank 6 can be precipitated again in the second sedimentation tank 7, and the side outer wall of the filter tank body 1 A water outlet 8 is installed on the side away from the water inlet 2, wherein the user can install the water outlet 8 on the side outer wall of the filter tank body 1, and the water outlet 8 includes a water outlet pipe and a pump body, so that the water precipitated in the second sedimentation tank 7 can be discharged through the water outlet 8, and an activated sludge return device 9 is installed on the back outer wall of the filter tank body 1, wherein the user can install the activated sludge return device 9 on the back outer wall of the filter tank body 1, so that a large amount of microorganisms and organic matter in the activated sludge can flow back to play an inoculation role, thereby enhancing the treatment effect of the device.

[0025] A water filter net 10 is installed on the inner wall of the first sedimentation tank 4 , wherein the user can install the water filter net 10 on the inner wall of the first sedimentation tank 4 so that impurities introduced into the water flow through the wave-breaking plate 3 in the first sedimentation tank 4 can be filtered through the water filter net 10 .

[0026] A water guiding device 11 is installed on the top outer wall of the first sedimentation tank 4, and a spraying device 12 is installed on the bottom outer wall of the water guiding device 11. The user can install the water guiding device 11 on the top of the first sedimentation tank 4 and the spraying device 12 on the bottom of the water guiding device 11, so that the water flow filtered by the water filter net 10 in the first sedimentation tank 4 can be transmitted to the first sedimentation tank 4 through the water guiding device 11.

[0027] A water filter frame 13 is installed on the inner wall of the filter pool 5, and an activated carbon layer 14 is installed on the inner wall of the water filter frame 13. The user can install the activated carbon layer 14 on the inner wall of the water filter frame 13, and the water filter frame 13 is installed on the inner wall of the filter pool 5, so that the water flow guided out of the spray device 12 can be filtered again through the water filter frame 13 and the internal activated carbon layer 14.

[0028] A liquid level sensor 15 is installed on the inner wall of the aeration tank 6, wherein the user can install the liquid level sensor 15 on the inner wall of the aeration tank 6, and the interior of the aeration tank 6 is connected to the filter tank 5 via a pump body, so that the operation of the pump body can monitor the water level inside the aeration tank 6 through the liquid level sensor 15 after the filtered water in the filter tank 5. When the liquid level sensor 15 detects that the water level in the aeration tank 6 is sufficient, the start and closing transmission of the water guiding device 11 on the control device.

[0029] A water quality sensor 16 is installed on the inner wall of the second sedimentation tank 7, and a temperature sensor 17 is installed on one side of the water quality sensor 16, wherein the user can install the water quality sensor 16 and the temperature sensor 17 on the inner wall of the second sedimentation tank 7 respectively, and the water flow after the reaction in the aeration tank 6 can be transmitted to the second sedimentation tank 7 through the pump body, so that the operation of the water quality sensor 16 and the temperature sensor 17 can monitor the water quality and temperature of the water flow in the second sedimentation tank 7.

[0030] A display screen 18 is installed on the side of the back outer wall of the filter tank body 1 away from the activated sludge return device 9, wherein the user can install the display screen 18 on the back outer wall of the filter tank body 1, and the water quality data monitored by the water quality sensor 16 and the temperature sensor 17 can be transmitted to the display screen 18, so that the staff can understand the water quality through the display screen 18, making the device convenient for users to operate.

[0031] Working principle: wastewater can be introduced into the filter tank body 1 through the water inlet 2, the wave-breaking plate 3 on the inner wall of the filter tank body 1 can reduce the buffering of the wastewater, and fall into the first sedimentation tank 4 at the bottom for sedimentation, and the impurities in the precipitated water flow can be filtered in the filter tank 5 on one side, and the active substances in the filtered water flow can react in the aeration tank 6 on one side, and the reacted water flow can be precipitated again in the second sedimentation tank 7 on one side, and discharged from the outlet 8 connected to the side outer wall, and the activated sludge in the second sedimentation tank 7 can be returned to the first sedimentation tank 4 through the activated sludge return device 9, so that the wastewater treatment effect of the device is enhanced; the liquid level sensor 15 on the inner wall of the aeration tank 6 The operation of the water guide device 11 installed on the first sedimentation tank 4 and the filter tank 5 can be controlled by the internal liquid level change, and the water flow in the first sedimentation tank 4 is adsorbed and transmitted through the water filter net 10 and the spray device 12 to the activated carbon layer 14 in the water filter frame 13 in the filter tank 5 for filtration. The filtered water flow can be transmitted to the aeration tank 6 through the pump body, and the operation of the water quality sensor 16 and the temperature sensor 17 in the second sedimentation tank 7 can transmit the water quality to the display screen 18, so as to facilitate the staff to operate the device, make the device convenient for users to operate, and realize the function of enhancing the wastewater treatment effect and facilitating operation of a biological filter for wastewater treatment.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A biological filter for wastewater treatment, comprising a filter body (1), characterized in that: The side outer wall of the filter tank body (1) is provided with a water inlet (2); the inner wall of the filter tank body (1) is fixed with a wave-breaking plate (3); the inner wall of the filter tank body (1) is provided with a first sedimentation tank (4) near the bottom of the wave-breaking plate (3); the inner wall of the filter tank body (1) is provided with a filter tank (5) on the side near the first sedimentation tank (4); the inner wall of the filter tank body (1) is provided with an aeration tank (6) on the side near the filter tank (5); the inner wall of the filter tank body (1) is provided with a second sedimentation tank (7) on the side near the aeration tank (6); the side of the side outer wall of the filter tank body (1) away from the water inlet (2) is provided with a water outlet (8); and the back outer wall of the filter tank body (1) is provided with an activated sludge return device (9).

2. A biological filter for wastewater treatment according to claim 1, characterized in that: A water filter net (10) is installed on the inner wall of the first sedimentation tank (4).

3. The biological filter for wastewater treatment according to claim 1, characterized in that: A water guide device (11) is installed on the top outer wall of the first sedimentation tank (4), and a spray device (12) is installed on the bottom outer wall of the water guide device (11).

4. The biological filter for wastewater treatment according to claim 1, characterized in that: A water filter frame (13) is installed on the inner wall of the filter pool (5), and an activated carbon layer (14) is installed on the inner wall of the water filter frame (13).

5. The biological filter for wastewater treatment according to claim 1, characterized in that: A liquid level sensor (15) is installed on the inner wall of the aeration tank (6).

6. The biological filter for wastewater treatment according to claim 1, characterized in that: A water quality sensor (16) is installed on the inner wall of the second sedimentation tank (7), and a temperature sensor (17) is installed on one side of the water quality sensor (16).

7. The biological filter for wastewater treatment according to claim 1, characterized in that: A display screen (18) is installed on the side of the back outer wall of the filter tank body (1) away from the activated sludge return device (9).

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