Integrated sewage biochemical tank with honeycomb structure

Abstract

The utility model belongs to sewage treatment technical field, concretely relates to a kind of integrated sewage biochemical pool of honeycomb structure, including regular hexagon main body structure, functional pool group, matching system and auxiliary facilities, the regular hexagon main body structure is regular hexagon shape structure, and multiple regular hexagon main body structure combination splicing formation honeycomb combined structure, this honeycomb combined structure is the main body structure of biochemical pool, the regular hexagon main body structure material is stainless steel, the functional pool group is integrated in honeycomb combined structure, including anaerobic tank, anoxic tank, aerobic tank and multiple two sedimentation tanks, each pool body is connected by internal flow guide structure.The utility model uses regular hexagon honeycomb structure and integrated design, integrates the traditional dispersed four types of pool body into single equipment, the land area is reduced by more than 30% than traditional facilities, reduce land occupancy, improve land use rate, effectively save land space, and then reduce construction cost to a certain extent.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to an integrated wastewater biochemical tank with a honeycomb structure. Background Technology

[0002] With the acceleration of urbanization and the increasing demands for environmental protection, the need for small and medium-sized wastewater treatment facilities is growing. Traditional wastewater treatment facilities typically adopt a decentralized design, with anaerobic tanks, anoxic tanks, aerobic tanks, and sedimentation tanks constructed independently, which presents the following problems: 1. Large footprint: Each pool is independently laid out, requiring a large amount of space for connecting pipelines and operations, resulting in low land resource utilization, and is especially unsuitable for urban core areas or areas with scarce land. 2. Long installation period: Each pool needs to be poured and installed separately, and the supporting pipelines and equipment need to be spliced ​​on site. The construction is complex and the construction period usually exceeds 3 months. 3. Low treatment efficiency: The connection between the tanks relies on long-distance pipelines, which can easily lead to problems such as uneven hydraulic residence time and insufficient mixing, affecting the nitrogen and phosphorus removal effect; 4. Poor integration: The monitoring equipment and the processing system are separated, requiring the construction of an additional control system, resulting in high operation and maintenance costs. Furthermore, the lack of a unified odor prevention and insulation structure can easily lead to secondary pollution. Utility Model Content

[0003] The purpose of this invention is to provide an integrated wastewater biological treatment tank with a honeycomb structure. This biological treatment tank is an integrated wastewater treatment facility with high integration, small footprint, convenient installation, and stable treatment efficiency.

[0004] The specific technical solution adopted in this utility model is as follows: An integrated wastewater biological treatment tank with a honeycomb structure includes a regular hexagonal main structure, functional tank groups, supporting systems, and auxiliary facilities. The regular hexagonal main structure is a regular hexagonal shape, and multiple regular hexagonal main structures are combined and spliced ​​to form a honeycomb composite structure. This honeycomb composite structure is the main structure of the biological treatment tank. The regular hexagonal main structure is made of stainless steel. The functional tank groups are integrated within the honeycomb composite structure, including anaerobic tanks, anoxic tanks, aerobic tanks, and multiple secondary sedimentation tanks. Each tank is connected through an internal flow guiding structure to form a continuous wastewater treatment process flow of "anaerobic-anoxic-aerobic-sedimentation". The supporting systems include a water distribution system, an aeration pipe system, a mixed liquor return pipe system, a sludge return pipe system, and an automated monitoring system. The auxiliary facilities include steel structure stairs, railings, walkway panels, fiberglass sealing covers, a stainless steel frame glass curtain wall sealing structure, and lifting devices.

[0005] In a preferred embodiment, the aeration pipe system includes multiple sets of tubular aerators made of EPDM, and is equipped with pipe clamps and connectors.

[0006] In a preferred embodiment, the mixed liquor return pipe system is equipped with multiple horizontal dry non-clogging variable frequency pumps, the sludge return pipe system is equipped with multiple sludge return pumps, and also includes multiple excess sludge pumps.

[0007] In a preferred embodiment, the automated monitoring system includes a DO meter and an MLSS meter, which are installed in the aerobic tank and the anoxic tank, respectively. The MLSS meter is installed in the aerobic tank and is used to monitor the dissolved oxygen and suspended solids concentration in the mixed liquor in real time.

[0008] In a preferred embodiment, the functional pool group is equipped with two types of submersible mixers, all of which are made of stainless steel. They are installed inside the anaerobic pool and the anoxic pool, respectively, for mixing the wastewater in the pools.

[0009] In a preferred embodiment, the main structure is further provided with an inlet pipe and an outlet pipe. The outlet pipe includes an outlet branch pipe and an outlet main pipe of the secondary sedimentation tank, which are made of carbon steel to ensure smooth water flow.

[0010] In a preferred embodiment, the auxiliary facilities also include multiple electric butterfly valves, which are installed on each return pipe and outlet pipe respectively, for regulating water flow. The multiple sets of lifting devices are evenly distributed on the top of the main structure for equipment inspection and maintenance. The fiberglass sealing cover plate covers the top of the main structure and is equipped with a stainless steel frame glass curtain wall sealing structure. The fiberglass pipe specification is DN150, which achieves odor prevention and structural sealing.

[0011] In a preferred embodiment, the aerobic tank is further equipped with a blower system, including a blower main pipe and blower branch pipes, for supplying oxygen to the aerobic tank to ensure the activity of aerobic microorganisms.

[0012] The technical effects achieved by this utility model are as follows: This utility model uses a regular hexagonal honeycomb structure and an integrated design to combine the traditionally scattered four types of pools into a single device, reducing the floor space by more than 30% compared to traditional facilities. This reduces land occupation, increases land utilization, effectively saves land space, and thus reduces construction costs to a certain extent. This utility model uses a modular splicing design, with the main structure and supporting equipment prefabricated in the factory. On-site splicing and pipeline connection are all that is needed, which shortens the installation cycle by 40% and further reduces construction costs. This utility model optimizes the tank layout and water flow path to make the hydraulic retention time distribution more uniform, thereby improving the overall denitrification and filtration of the biological treatment tank. It also enhances the phosphorus removal capacity and effect of the biological treatment tank, effectively improving wastewater indicators. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this practical regular hexagonal body; Figure 2 This is a practical layout plan of walkways and equipment; Figure 3 This is a practical bottom plan layout diagram; Figure 4 This is a practical top plan layout diagram; Figure 5 This is a practical deodorizing and sealing plan layout diagram; Figure 6 This is a schematic diagram of the internal structure of this practical aerobic tank; Figure 7 This is a schematic diagram of the internal structure of the practical anoxic tank and sedimentation tank; Figure 8 This is a schematic diagram of the internal structure of this practical anaerobic tank.

[0014] The attached diagram lists the components represented by each number as follows: 1. Hexagonal main structure; 101. Anaerobic tank; 102. Anoxic tank; 103. Aerobic tank; 104. Secondary sedimentation tank; 105. Aerator; 106. Lifting device; 107. Fiberglass sealing cover; 108. Sludge return pump; 109. Railing; 110. Blower main pipe; 111. Blower branch pipe; 112. Effluent main pipe; 113. Effluent branch pipe; 114. Walkway slab. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0019] Please see the appendix Figures 1 to 8 As shown, this utility model provides an integrated wastewater biological treatment tank with a honeycomb structure, including a regular hexagonal main structure 1, functional tank groups, supporting systems, and auxiliary facilities. The regular hexagonal main structure 1 is a regular hexagonal structure with a side length of 3290mm and a depth of 6108mm. Multiple regular hexagonal main structures 1 are combined and spliced ​​to form a honeycomb composite structure. This honeycomb composite structure is the main structure of the biological treatment tank. The regular hexagonal main structure 1 is made of stainless steel. The functional tank groups are integrated within the honeycomb composite structure, including anaerobic digesters... The system includes an aerobic tank 101, an anoxic tank 102, an aerobic tank 103, and multiple secondary sedimentation tanks 104. These tanks are connected by an internal flow guiding structure to form a continuous wastewater treatment process flow of "anaerobic-anoxic-aerobic-sedimentation". The supporting systems include a water distribution system, an aeration pipe system, a mixed liquor return pipe system, a sludge return pipe system, and an automated monitoring system. The auxiliary facilities include steel structure stairs, railings 109, walkway slabs 114, fiberglass sealing covers 107, stainless steel frame glass curtain wall sealing structure, and lifting devices 106.

[0020] The above structure uses a regular hexagonal honeycomb structure and integrated design to integrate the traditionally scattered four types of pools into a single device, reducing the land area occupied by more than 30% compared to traditional facilities, reducing land occupation rate, increasing land utilization rate, effectively saving land space, and thus reducing construction costs to a certain extent. At the same time, the modular splicing design is used, and the main structure and supporting equipment are prefabricated in the factory. On-site splicing and pipeline connection are all that is needed, which shortens the installation cycle by 40% and further reduces construction costs. By optimizing the tank layout and water flow path, the hydraulic retention time distribution is made more uniform, improving the overall denitrification and filtration of the biological treatment tank, while also enhancing the phosphorus removal capacity and effect of the biological treatment tank, effectively improving wastewater indicators.

[0021] In a preferred embodiment, please refer to Figure 7 The aeration pipe system includes multiple sets of tubular aerators 105, which are made of EPDM and are equipped with pipe clamps and connectors.

[0022] In this embodiment, during the wastewater treatment process, the amount of dissolved oxygen in the wastewater can be increased by the aerator 105, thereby meeting the dissolved oxygen requirements of aerobic microorganisms.

[0023] Secondly, please refer to it again. Figure 8 The mixed liquid return pipe system is equipped with multiple horizontal, dry, non-clogging variable frequency pumps, with a flow rate of 300 m³ / h. 3 The pump has a flow rate of 150 m³ / h, a head of 7 m, and a power of 15 kW. It is made of cast iron and operates in a 2-in-2-out mode. The sludge return pipe system is equipped with multiple sludge return pumps (108), with parameters including a flow rate of 150 m³ / h. 3The pump has a flow rate of 10 m³ / h, a head of 12 m, a voltage of 380V, and a power of 7.5 kW. It is made of cast iron and also uses a 2-in-2-out-of-service mode. It also includes multiple waste sludge pumps with a flow rate of 10 m³ / h. 3 / h, head 8m, voltage 380V, power 0.75kW, material is cast iron, 2 for use and 2 for standby.

[0024] In the above structure, the horizontal dry non-clogging variable frequency pump realizes the return of mixed liquor from the aerobic tank 103 to the anoxic tank 102, and the return ratio can be adjusted by the variable frequency; the sludge return pump 108 returns the sludge from the secondary sedimentation tank 104 to the anaerobic tank 101, and the return ratio is controlled at 50%-100%; the excess sludge pump periodically discharges the excess sludge to maintain the stability of the sludge concentration in the system.

[0025] Secondly, please refer to the following as well. Figure 1 The automated monitoring system includes two DO meters and two MLSS meters. The DO meters have a range of 0-10 mg / L, and the MLSS meters have a range of 1-10 g / L. The two DO meters are installed in aerobic tank 103 and anoxic tank 102, respectively, and the MLSS meters are installed in aerobic tank 103. They are used to monitor the dissolved oxygen and suspended solids concentration in the tank in real time.

[0026] The above structure uses a DO meter to monitor the dissolved oxygen levels in the aerobic tank 103 and the anoxic tank 102 in real time, and an MLSS meter to monitor the sludge concentration in the aerobic tank 103. The data can be transmitted to the central control system to achieve automatic adjustment of aeration intensity and return ratio, ensuring stable treatment results.

[0027] In a preferred embodiment, please refer to Figure 8 The functional pool group is equipped with two types of submersible mixers, with power of 1.5kW and 2.2kW respectively. All submersible mixers are made of stainless steel and are installed inside the anaerobic pool 101 and the anoxic pool 102 respectively, for mixing the sewage in the pool.

[0028] In this embodiment, the submersible mixer is used to prevent sludge from settling inside the anaerobic tank 101 and the anoxic tank 102, thus facilitating the discharge of sludge.

[0029] Secondly, please refer to it again. Figure 4 The main structure is also equipped with an inlet pipe and an outlet pipe. The inlet pipe is DN300 and is equipped with a DN30 manual gate valve and a DN250 inlet pipe interface. The outlet pipe includes the outlet branch pipe 113 and the outlet main pipe 112 of the secondary sedimentation tank 104. The material is carbon steel to ensure smooth water flow.

[0030] Secondly, please refer to the following as well. Figure 5 and Figure 7The auxiliary facilities also include multiple electric butterfly valves, with specifications of DN100, material of SS304, and voltage of 380V, which are installed on each return pipe and outlet pipe to regulate water flow. Multiple sets of lifting devices 106 are evenly distributed on the top of the main structure for equipment inspection and maintenance. Fiberglass sealing cover plates 107 cover the top of the main structure, and a matching stainless steel frame glass curtain wall sealing structure is provided. The fiberglass pipe specification is DN150, which achieves odor prevention and structural sealing.

[0031] In this embodiment, the fiberglass sealing cover 107 effectively prevents the odor generated during the sewage treatment process from spreading and avoids secondary pollution. At the same time, the lifting device 106 facilitates the inspection and maintenance of the equipment.

[0032] Secondly, please refer to the following as well. Figure 8 The aerobic tank 103 is also equipped with a blower system, including a blower main pipe 110 and an underwater blower branch pipe 111, which is used to supply oxygen to the aerobic tank 103 to ensure the activity of aerobic microorganisms.

[0033] The working principle of this utility model is as follows: When treating sewage, the sewage to be treated enters the anaerobic tank 101 through a DN300 inlet pipe (with a DN30 manual gate valve to adjust the flow rate). At the same time, the sludge return pump 108 in the sludge return pipe system returns the activated sludge in the secondary sedimentation tank 104 to the anaerobic tank 101. The return ratio is controlled at 50%-100%. The 1.5kW stainless steel submersible mixer in the anaerobic tank 101 is started, and the stirring speed is maintained at 0.3-0.5m / s to fully mix the sewage and sludge and form an anaerobic environment. Under this environment, the polyphosphate-accumulating bacteria in the sludge release the phosphorus stored in their bodies and decompose some of the organic matter in the sewage to store energy for subsequent reactions. The hydraulic retention time is about 1.5-2 hours. After anaerobic treatment, the wastewater enters the anoxic tank 102 through the internal guide structure. The horizontal dry non-clogging variable frequency pump in the mixed liquor return pipe system returns the nitrate-rich mixed liquor in the aerobic tank 103 to the anoxic tank 102. The return ratio is controlled by frequency conversion between 100% and 300%. The stainless steel submersible mixer in the anoxic tank 102 works continuously to maintain an environment with no dissolved oxygen and nitrate. At this time, the denitrifying bacteria use the organic matter in the wastewater as a carbon source to reduce the nitrate in the returned mixed liquor to nitrogen gas and release it into the air, thereby removing nitrogen. The hydraulic retention time is about 2-2.5. At the same time, the DO meter monitors the dissolved oxygen concentration in the anoxic tank 102 in real time to ensure that it is stable below 0.2 mg / L, ensuring that the denitrification reaction proceeds efficiently. After anoxic treatment, the wastewater enters the aerobic tank 103. The tubular aerator 105 in the aerobic tank 103 continuously aerates the wastewater through the blower system. The diameter of the aeration bubbles is less than 3 mm, and the oxygen utilization rate is more than 25%, so that the dissolved oxygen concentration in the tank is stabilized at 2-4 mg / L. Under this environment, nitrifying bacteria oxidize the ammonia nitrogen in the wastewater into nitrate, providing substrate for denitrification in the anoxic tank 102. At the same time, polyphosphate-accumulating bacteria absorb a large amount of phosphorus in the wastewater under aerobic conditions and store it in the form of polyphosphate in their bodies. It is discharged from the system with the sludge, thus achieving phosphorus removal. The MLSS meter in the aerobic tank 103 monitors the mixed liquor suspended solids concentration in real time to ensure that the sludge concentration is stable at 3-5 g / L, providing sufficient biomass for microbial reaction. The hydraulic retention time is about 4-5 hours. After aerobic treatment, the mixed liquor enters the secondary sedimentation tank 104. The secondary sedimentation tank 104 adopts a horizontal flow design, and the mixed liquor flows slowly in the tank. The activated sludge settles to the bottom of the tank under the action of gravity. Part of the settled sludge is returned to the anaerobic tank 101 through the sludge return pipe to maintain the sludge concentration of the system. The other part is discharged periodically through the excess sludge pump to avoid sludge aging. The discharged excess sludge can be further dewatered and transported for disposal. The supernatant of the secondary sedimentation tank 104 is collected through the effluent branch pipe 113 to the effluent main pipe 112 and finally discharged into the biochemical tank. Throughout the entire process, the automated monitoring system collects data in real time and transmits it to the central control system. The central control system automatically optimizes process parameters by adjusting the air volume of the aerator 105, the frequency of the return pump, and the on / off status of the electric butterfly valve. The fiberglass sealing cover 107 on the top of the main structure and the stainless steel frame glass curtain wall sealing structure isolate odors and prevent secondary pollution. The lifting device 106, steel structure stairs, railings 109, and walkway 114 facilitate equipment maintenance and personnel operation, ensuring the long-term stable operation of the system.

[0034] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model shall be implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. An integrated wastewater biological treatment tank with a honeycomb structure, characterized in that: The system includes a regular hexagonal main structure (1), functional pool groups, supporting systems, and auxiliary facilities. The regular hexagonal main structure (1) is a regular hexagonal structure, and multiple regular hexagonal main structures (1) are combined and spliced ​​to form a honeycomb composite structure. This honeycomb composite structure is the main structure of the biological tank. The regular hexagonal main structure (1) is made of stainless steel. The functional pool groups are integrated within the honeycomb composite structure, including an anaerobic pool (101), an anoxic pool (102), an aerobic pool (103), and... Multiple secondary sedimentation tanks (104) are connected by an internal flow guiding structure to form a continuous wastewater treatment process flow of "anaerobic-anoxic-aerobic-sedimentation". The supporting system includes a water distribution system, an aeration pipe system, a mixed liquor return pipe system, a sludge return pipe system and an automated monitoring system. The auxiliary facilities include steel structure stairs, railings (109), walkway slabs (114), fiberglass sealing cover plates (107), stainless steel frame glass curtain wall sealing structure and lifting device (106).

2. The integrated wastewater biological treatment tank with a honeycomb structure according to claim 1, characterized in that: The aeration pipe system includes multiple sets of tubular aerators (105), which are made of EPDM and are equipped with pipe clamps and connectors.

3. The integrated wastewater biological treatment tank with a honeycomb structure according to claim 1, characterized in that: The mixed liquor return pipe system is equipped with multiple horizontal dry non-clogging variable frequency pumps, and the sludge return pipe system is equipped with multiple sludge return pumps (108), as well as multiple waste sludge pumps.

4. The integrated wastewater biological treatment tank with a honeycomb structure according to claim 1, characterized in that: The automated monitoring system includes a DO meter and an MLSS meter, which are installed in the aerobic tank (103) and the anoxic tank (102) respectively. The MLSS meter is installed in the aerobic tank (103) and is used to monitor the dissolved oxygen and mixed liquor suspended solids concentration in the tank in real time.

5. The integrated wastewater biological treatment tank with a honeycomb structure according to claim 1, characterized in that: The functional pool group is equipped with two types of submersible mixers. All submersible mixers are made of stainless steel and are installed inside the anaerobic pool (101) and the anoxic pool (102) respectively for mixing the sewage in the pool.

6. The integrated wastewater biological treatment tank with a honeycomb structure according to claim 1, characterized in that: The main structure is also equipped with an inlet pipe and an outlet pipe. The outlet pipe includes an outlet branch pipe (113) and an outlet main pipe (112) of the secondary sedimentation tank (104), which are made of carbon steel to ensure smooth water flow.

7. The integrated wastewater biological treatment tank with a honeycomb structure according to claim 1, characterized in that: The auxiliary facilities also include multiple electric butterfly valves, which are installed on each return pipe and outlet pipe to regulate water flow. The multiple sets of lifting devices (106) are evenly distributed on the top of the main structure for equipment inspection and maintenance. The fiberglass sealing cover (107) covers the top of the main structure and is equipped with a stainless steel frame glass curtain wall sealing structure. The fiberglass pipe specification is DN150 to achieve odor prevention and structural sealing.

8. The integrated wastewater biological treatment tank with a honeycomb structure according to claim 1, characterized in that: The aerobic tank (103) is also equipped with a blower system, including a blower main pipe (110) and a blower branch pipe (111), which is used to deliver oxygen to the aerobic tank (103) to ensure the activity of aerobic microorganisms.

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