Intelligent efficient biological aerated filter integrated equipment

Abstract

The utility model relates to the technical field of sewage treatment, and provides intelligent efficient biological aerated filter integrated equipment which comprises a tank body, a filter plate is arranged on the lower portion of the tank body, a supporting layer, a fixed filler layer, a suspended filler layer and an intercepting net are sequentially arranged on the filter plate from bottom to top, a water outlet pipe is arranged on the upper portion of the tank body, and a water outlet pipe is arranged on the lower portion of the tank body. A water inlet pipe, a water washing assembly, a gas washing assembly and an aeration assembly are arranged at the bottom of the tank body, online monitoring equipment is arranged at the upper part of the tank body, the online monitoring equipment is electrically connected with a control system, and the control system is electrically connected with the water washing assembly, the gas washing assembly and the aeration assembly. The functions of intelligent aeration, intelligent backwashing and the like can be realized through the control system. The effect of saving energy consumption is achieved by accurately controlling the aeration rate, the backwashing time and the backwashing intensity, and the operation cost of the biological aerated filter is effectively reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of sewage treatment, and more specifically, relates to an intelligent and efficient integrated aerated biological filter device. Background Art

[0002] A biological aerated filter (BAF) is an upward-flow aerated filter that integrates biosorption, oxidation, decomposition, synthesis, filtration, and retention. It removes COD, SS, ammonia nitrogen, and phosphorus. It is a novel biofilm wastewater treatment process, often used in advanced treatment at sewage plants. The biomass within the reactor is significantly higher than that of traditional activated sludge processes, allowing it to operate at higher organic loads while requiring less floor space. Generally, the overall wastewater treatment plant footprint is approximately one-fifth that of traditional processes. BAFs offer low capital investment, high oxygen transfer efficiency, and stable operation.

[0003] Existing biological aerated filters also face numerous operational challenges. First, they have stringent requirements for influent water quality, generally requiring turbidity levels below 60 NTU and ammonia nitrogen concentrations to be kept within a reasonable range. High ammonia nitrogen concentrations significantly reduce the removal rate. Second, the commonly used ceramsite filler does not allow for microbial biofilm formation, resulting in ineffective pollutant removal. Third, the system's high energy consumption stems from the integration of aeration, air-water backwash, and sewage lifting. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an intelligent and efficient integrated aerated biological filter device, aiming to solve problems such as poor microbial biofilm formation, low pollutant removal rate and high energy consumption.

[0005] To achieve the above-mentioned objectives, the technical solution adopted in this application is: to provide an intelligent and efficient aerated biological filter integrated device, including: a tank body, a filter plate is provided at the lower part of the tank body, and a supporting layer, a fixed filler layer, a suspended filler layer and an interception net are provided on the filter plate in sequence from bottom to top; an outlet pipe is provided at the upper part of the tank body, and an inlet pipe, a water washing assembly, an air washing assembly and an aeration assembly are provided at the bottom of the tank body; an online monitoring device is provided at the upper part of the tank body, and the online monitoring device is electrically connected to the control system, and the control system is electrically connected to the water washing assembly, the air washing assembly and the aeration assembly.

[0006] In one embodiment, the supporting layer is a paved pebble layer, the fixed filler layer is a biological ceramsite layer, and the suspended filler layer is an MBBR filler layer.

[0007] In one embodiment, the portion of the water inlet pipe located inside the tank body is provided with a plurality of arranged water distribution pipes, each water distribution pipe is provided with a plurality of water outlet holes, and the water distribution pipes are located below the filter plate.

[0008] In one embodiment, the water washing assembly includes a backwash water pipe and a backwash water pump, one end of the backwash water pipe is connected to the water outlet pipe, and the other end of the backwash water pipe is connected to the water inlet pipe. The backwash water pump is arranged on the backwash water pipe, and an electric control valve is provided on the backwash water pipe.

[0009] In one embodiment, the air washing assembly includes a blower and an air washing pipe, one end of the air washing pipe is connected to the blower, and the other end is connected to the bottom of the tank body, and an electric control valve is provided on the air washing pipe.

[0010] In one embodiment, the aeration assembly includes a process air pipe, one end of which is connected to the blower, and the other end extends into the supporting layer and is connected to an air distribution pipe, the air distribution pipe includes an air ring pipe and an air branch pipe arranged on the air ring pipe, and the process air pipe is provided with an electrically controlled valve.

[0011] In one embodiment, the filter plate is provided with a plurality of long-handled filter heads.

[0012] In one embodiment, a backwash discharge chamber and a water outlet chamber are respectively provided on the outer side of the upper part of the tank body, and a water outlet trough is provided in the tank body. The water outlet trough and the backwash discharge chamber are connected through a backwash drain valve, and the water outlet trough and the water outlet chamber are connected through a water outlet valve. The backwash discharge chamber is connected to a backwash drain pipe, and the water outlet chamber is connected to the water outlet pipe.

[0013] In one embodiment, the MBBR filler in the MBBR filler layer has a size of 10 mm to 30 mm cube and a specific surface area of ​​1200 m 2 / m 3 , the allocation rate is 10%-40%.

[0014] In one embodiment, the water inlet pipe, the water outlet pipe and the backwash drain pipe are all provided with electrically controlled valves.

[0015] The beneficial effects of the intelligent and efficient integrated biological aeration filter device provided by this application are:

[0016] 1. A suspended filler layer is added to the fixed filler layer. The MBBR filler, made of a hydrophilic polymer composite material, boasts a larger specific surface area, higher porosity, and a shorter biofilm formation time. This effectively increases microbial concentration, addresses the problem of poor microbial growth on traditional filter media, and enhances the treatment efficiency of the biological aerated filter. MBBR fillers also feature extended microbial residence time, increased oxygen utilization, and a long service life.

[0017] 2. The control system can realize intelligent aeration, intelligent backwash and other functions. By precisely controlling the aeration volume, backwash time and backwash intensity, energy saving can be achieved, effectively reducing the operating cost of the aerated biological filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A simplified structural diagram of the intelligent and efficient biological aeration filter integrated device provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 Detailed structural diagram at A in the middle;

[0021] Figure 3 for Figure 1 Detailed structural diagram at B in the figure.

[0022] Among them, the reference numerals in the figures are:

[0023] 1. Tank body; 2. Support layer; 3. Fixed packing layer; 4. Suspended packing layer; 5. Water inlet pipe; 6. Backwash water pump; 7. Backwash water pipe; 8. Water outlet pipe; 9. Water outlet valve; 10. Online monitoring equipment; 11. Interception net; 12. Water outlet trough; 13. Backwash drain valve; 14. Backwash drain pipe; 15. Blower; 16. Process air pipe; 17. Air washing pipeline; 18. Long-handled filter head; 19. Filter plate; 51. Water distribution pipe; 161. Air ring pipe; 162. Air branch pipe. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0025] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0028] like Figure 1-Figure 3 As shown, an intelligent and efficient integrated biological aeration filter device provided in an embodiment of the present application will now be described. This intelligent and efficient integrated biological aeration filter device comprises: a tank body 1, a filter plate 19 disposed at the lower portion of the tank body 1, and a plurality of long-handled filter heads 18 disposed on the filter plate 19. The long-handled filter heads 18 are anti-blocking long-handled filter heads that can intercept suspended matter in sewage; a support layer 2, a fixed filler layer 3, a suspended filler layer 4, and an interception net 11 are disposed on the filter plate 19 in ascending order. The interception net 11 is used to intercept the suspended filler, and the filter plate 19 serves as a support.

[0029] A water outlet pipe 8 is provided at the upper portion of the tank body 1 for discharging the treated and purified water.

[0030] The bottom of the tank 1 is provided with a water inlet pipe 5, a water washing assembly, an air washing assembly and an aeration assembly, and the sewage flows from bottom to top. The water washing assembly and the air washing assembly are used to achieve air-water backwashing, and the aeration assembly is used to provide oxygen for the growth of microorganisms.

[0031] An online monitoring device 10 is installed above the tank 1. This device is electrically connected to a control system, which is in turn electrically connected to the water wash assembly, air wash assembly, and aeration assembly. Both the online monitoring device 10 and the control system utilize conventional technology. The online water quality monitoring device 10 monitors water quality, such as oxygen content and ammonia nitrogen. The control system, a PLC system, implements intelligent aeration, intelligent backwashing, and intelligent early warning.

[0032] The supporting layer 2 is a pebble layer, which is evenly laid. The particle size of the pebbles needs to be selected according to the water quality. The fixed filler layer 3 is a biological ceramsite layer. The biological ceramsite has a large specific surface area and high porosity, providing an environment for microorganisms to attach and grow, thereby promoting the purification process of sewage. The suspended filler layer 4 is an MBBR filler layer. The MBBR filler is a hydrophilic polymer composite material with a specification of 10mm-30mm cube and a specific surface area of ​​≥1200m 2 / m 3 , the allocation rate is 10%-40%.

[0033] In this embodiment, the portion of the water inlet pipe 5 located within the tank body 1 is provided with a plurality of arranged water distribution pipes 51, each of which is provided with a plurality of water outlet holes. The water distribution pipes 51 are located below the filter plate 19. The function of the water distribution pipes 51 is to achieve uniform water distribution, reduce the impact of the incoming water, and prevent sludge accumulation at the bottom of the tank body 1.

[0034] The water washing assembly includes a backwash water pipe 7 and a backwash water pump 6. One end of the backwash water pipe 7 is connected to the water outlet pipe 8, and the other end of the backwash water pipe 7 is connected to the water inlet pipe 5. The backwash water pump 6 is arranged on the backwash water pipe 7, and an electric control valve is provided on the backwash water pipe 7. When water washing is required, the electric control valve on the backwash water pipe 7 is opened, and the backwash water pump 6 is started, and the purified water is passed through the backwash water pipe 7 into the water inlet pipe 5, and then enters the tank body 1 through the water inlet pipe 5 and the water distribution pipe 51 for water washing.

[0035] The air washing assembly includes a blower 15 and an air washing pipe. One end of the air washing pipe is connected to the blower 15, and the other end is connected to the bottom of the tank body 1. The air washing pipe is equipped with an electronically controlled valve. When air washing is required, the electronically controlled valve on the air washing pipe is opened, and the blower 15 is turned on, and the generated air flow is passed through the air washing pipe into the tank body 1 for air washing.

[0036] Among them, the aeration component includes a process air pipe 16, one end of which is connected to the blower 15, and the other end extends into the supporting layer 2 and is connected to the air distribution pipe. The air distribution pipe includes an air ring pipe 161 and an air branch pipe 162 arranged on the air ring pipe 161. The air distribution pipe is provided with a number of microporous aerators for generating tiny bubbles. The aeration component and the air washing component share a blower 15, saving costs. An electric control valve is provided on the process air pipe 16, so that air washing and aeration can be carried out separately or simultaneously. The air distribution pipe is used to evenly distribute the airflow, generate microbubbles, and improve the aeration effect. The control system can control the opening and closing of each electric control valve, the opening and closing of the backwash water pump and the blower, and the power.

[0037] In this embodiment, a backwash discharge chamber and a water outlet chamber are provided on the upper outer side of the tank body 1. A water outlet trough 12 is provided within the tank body 1. The water outlet trough 12 is connected to the backwash discharge chamber via a backwash drain valve 13, and the water outlet trough 12 is connected to the water outlet chamber via a water outlet valve 9. The backwash discharge chamber is connected to a backwash drain pipe 14, and the water outlet chamber is connected to a water outlet pipe 8. The water inlet pipe 5, the water outlet pipe 8, and the backwash drain pipe 14 are all equipped with electronically controlled valves, allowing them to be automatically opened and closed under the control of the control system.

[0038] In this embodiment, the working process of the intelligent and efficient aerated biological filter integrated equipment is as follows: sewage enters the bottom of the tank body 1 from the water inlet pipe 5. Under the action of the water distribution pipe 51, the sewage is evenly distributed in the water inlet area at the bottom of the tank body 1, reducing the impact of the sewage on the equipment and preventing sludge from settling at the bottom. Then, the sewage enters the supporting layer 2 through the long-handled filter head 18. The long-handled filter head 18 intercepts suspended matter in the sewage and prevents clogging. After the sewage enters the supporting layer 2, under the action of pebbles of different particle sizes, impurities in the sewage are further filtered, while the impact of the sewage is reduced and the packing layer 3 is stabilized. After the sewage enters the fixed packing layer 3, the biological ceramsite in the layer provides a breeding place for microorganisms. The microorganisms grow rapidly and form a stable and highly active biofilm. In an aerobic environment, the pollutants COD and ammonia nitrogen in the sewage are degraded. However, due to the limited amount of microorganisms attached to the biofilm, the removal efficiency is usually not high.

[0039] In this embodiment, to address the problem of low pollutant removal efficiency, a suspended filler layer 4 is designed above the fixed filler layer 3. A hydrophilic polymer composite MBBR filler is used to fill a certain height. Compared with traditional PP material MBBR fillers, this filler has hydrophilicity, a larger specific surface area, and a higher porosity. Its hydrophilic properties allow the MBBR filler to sink into the water and, under the action of aeration, to be suspended in a state, making it easier for microorganisms to form biofilms, greatly increasing the concentration of microorganisms and improving the pollutant removal efficiency. Afterwards, the sewage enters the outlet area, which is equipped with a water outlet trough 12 and a water outlet valve 9. The water outlet trough 12 is connected to the outlet pipe 8, which is connected to the backwash water pipe 7 and is controlled by an electric control valve. When the equipment needs to be backwashed, it automatically switches to the backwash water pipe 7 for backwashing.

[0040] During operation, aeration occurs. The aeration assembly, consisting of a blower 15, process air pipes 16, and air distribution pipes, flows through the blower 15 into the process air pipes 16. Air is then transported through the air ring pipe 161 and air branch pipes 162 to the microporous aerators, providing oxygen for the microorganisms. The dissolved oxygen meter in the online monitoring device 10 monitors the oxygen content in the wastewater in real time, feeding the data back to the control system for precise control of the aeration rate.

[0041] Backwashing: This equipment's backwashing process involves two steps: air washing and water washing. The backwashing process is as follows: close the electrically controlled valves on the water inlet pipe 5 and the water outlet pipe 8, adjust the air volume of the blower 15, and switch the air path to the backwash air pipe for air washing. Next, open the electrically controlled valve and backwash drain valve 13 on the backwash pipe, start the backwash water pump, and perform a combined air and water backwash. Next, shut down the blower 15 and perform water washing. Finally, shut down the backwash water pump, close the electrically controlled valve and backwash drain valve 13 on the backwash water pipe 7, and the backwash is complete. The backwash intensity and duration of each stage are automatically controlled by the control system.

[0042] Online monitoring equipment 10: During operation, it monitors the flow rate, dissolved oxygen, liquid level, sludge concentration and other parameters of sewage in real time, and feeds the data back to the control system to achieve precise control of aeration and backwashing according to different working conditions.

[0043] The intelligent and efficient integrated biological aerated filter provided in this embodiment is mainly used in the field of water treatment. Through the suspended filler layer 4, the online water quality monitoring device 10 and the control system, the biological aerated filter achieves the characteristics of high pollutant removal efficiency, low energy consumption and stable water output.

[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An intelligent and efficient integrated biological aeration filter device, characterized in that: include: A tank body (1) is provided at the bottom of the tank body (1), a filter plate (19) is provided on the filter plate (19) in order from bottom to top, a supporting layer (2), a fixed filler layer (3), a suspended filler layer (4) and an interception net (11), a water outlet pipe (8) is provided at the top of the tank body (1), a water inlet pipe (5), a water washing component, an air washing component and an aeration component are provided at the bottom of the tank body (1), an online monitoring device (10) is provided at the top of the tank body (1), the online monitoring device (10) is electrically connected to a control system, and the control system is electrically connected to the water washing component, the air washing component and the aeration component.

2. The intelligent and efficient integrated biological aeration filter device according to claim 1, characterized in that: The supporting layer (2) is a paved cobblestone layer, the fixed filler layer (3) is a biological ceramsite layer, and the suspended filler layer (4) is an MBBR filler layer.

3. The intelligent and efficient integrated biological aeration filter device according to claim 2, characterized in that: The portion of the water inlet pipe (5) located inside the tank body (1) is provided with a plurality of arranged water distribution pipes (51), each of which is provided with a plurality of water outlet holes. The water distribution pipes (51) are located below the filter plate (19).

4. The intelligent and efficient integrated biological aeration filter device according to claim 3, characterized in that: The water washing assembly comprises a backwash water pipe (7) and a backwash water pump (6), one end of the backwash water pipe (7) is connected to the water outlet pipe (8), the other end of the backwash water pipe (7) is connected to the water inlet pipe (5), the backwash water pump (6) is arranged on the backwash water pipe (7), and the backwash water pipe (7) is provided with an electric control valve.

5. The intelligent and efficient integrated biological aeration filter device according to any one of claims 1 to 4, characterized in that: The air washing assembly comprises a blower (15) and an air washing pipeline, one end of the air washing pipeline is connected to the blower (15), and the other end is communicated with the bottom of the tank body (1), and an electric control valve is provided on the air washing pipeline.

6. The intelligent and efficient integrated biological aeration filter device according to claim 5, characterized in that: The aeration assembly includes a process air pipe (16), one end of which is connected to the blower (15), and the other end of which extends into the supporting layer (2) and is connected to an air distribution pipe. The air distribution pipe includes an air ring pipe (161) and an air branch pipe (162) arranged on the air ring pipe (161). An electric control valve is provided on the process air pipe (16).

7. The intelligent and efficient integrated biological aeration filter device according to claim 6, characterized in that: A plurality of long-handled filter heads (18) are provided on the filter plate (19).

8. The intelligent and efficient integrated biological aeration filter device according to claim 7, characterized in that: A backwash discharge chamber and a water outlet chamber are respectively provided on the outer side of the upper portion of the tank body (1); a water outlet trough (12) is provided inside the tank body (1); the water outlet trough (12) and the backwash discharge chamber are communicated with via a backwash drain valve (13); the water outlet trough (12) and the water outlet chamber are communicated with via a water outlet valve (9); the backwash discharge chamber is connected to a backwash drain pipe (14); and the water outlet chamber is connected to the water outlet pipe (8).

9. The intelligent and efficient integrated biological aeration filter device according to claim 2, characterized in that: The MBBR filler in the MBBR filler layer is in the form of a cube with a size of 10 mm to 30 mm and a specific surface area of ​​1200 m 2 / m 3 , the allocation rate is 10%-40%.

10. The intelligent and efficient integrated biological aeration filter device according to claim 8, characterized in that: The water inlet pipe (5), the water outlet pipe (8) and the backwash drain pipe (14) are all provided with electric control valves.

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