Sewage treatment device

Abstract

The utility model provides a sewage treatment device. The sewage treatment device comprises a first-stage variable tank group, a second-stage variable tank group and a third-stage variable tank group which are sequentially connected through pipelines, the instrument assemblies are respectively arranged on the pipelines; the water treatment components are respectively mounted in the first-stage variable tank group, the second-stage variable tank group and the third-stage variable tank group; the aeration control system is connected with the instrument assembly, the water treatment assembly and the air blower assembly. The biochemical pool is divided into multiple stages, and is controlled by the aeration control system, so that the negative influence of different inlet water concentrations at the initial stage, the middle stage and the long stage of project operation, particularly insufficient inlet water carbon source at the early stage, on the poor denitrification effect of the sewage treatment device in an urban sewage treatment plant is effectively solved; an accurate aeration method is adopted in the biochemical pool to control the aeration rate, so that the effluent reaches the standard, the dissolved oxygen of the biochemical pool is maintained at a lower level, the aeration rate can be reduced, the energy consumption of the whole biochemical pool can be reduced, short-cut nitrification and denitrification can be promoted under certain conditions, and the denitrification treatment effect can be enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and specifically relates to a sewage treatment device. Background Art

[0002] Since the actual influent conditions at the beginning of the sewage treatment plant project construction are not completely consistent with the design conditions, the flow rate is small in the dry season and the water quality is concentrated, while the flow rate is large in the rainy season and the water quality is thin. In view of the large fluctuations in influent during the dry and rainy seasons and the possible lack of carbon sources, traditional sewage treatment plants use the traditional AAO-AO process to treat sewage. However, the traditional AAO-AO process has a low mixing efficiency and lacks certain monitoring of the incoming water volume, water quality, environment (water temperature), etc. Utility Model Content

[0003] The embodiment of the present application provides a sewage treatment device to solve the problems existing in the related technology. The technical solution is as follows:

[0004] A sewage treatment device, comprising:

[0005] The biochemical pool includes a primary variable pool group, a secondary variable pool group and a tertiary variable pool group, and the primary variable pool group, the secondary variable pool group and the tertiary variable pool group are connected in sequence through pipelines;

[0006] Instrument components, the instrument components are respectively arranged inside the primary variable pool group, the secondary variable pool group and the tertiary variable pool and on the pipelines connecting the three;

[0007] Water treatment components, the water treatment components are respectively installed in the primary variable pool group, the secondary variable pool group and the tertiary variable pool group;

[0008] A blower assembly, the blower assembly is connected to the water treatment assembly;

[0009] Aeration control system, the aeration control system controls the instrument components, water treatment components and blower components.

[0010] In one embodiment,

[0011] The instrument package includes:

[0012] A plurality of flow meters, each of which is installed on the pipeline and is electrically connected to the aeration control system;

[0013] A plurality of air volume meters are respectively installed in the first-level variable pool group, the second-level variable pool group and the third-level variable pool group, and the air volume meters are electrically connected to the aeration control system;

[0014] A plurality of water quality concentration detectors are respectively installed in the first-level variable pool group, the second-level variable pool group and the third-level variable pool group, and the water quality concentration detectors are electrically connected to the aeration control system;

[0015] A plurality of pressure instruments are respectively connected to the primary variable tank group, the secondary variable tank group and the tertiary variable tank group.

[0016] In one embodiment,

[0017] Water treatment components include:

[0018] A plurality of submersible flow thrusters are respectively installed in the first-stage variable pool group, the second-stage variable pool group and the third-stage variable pool;

[0019] Three groups of aeration components, the three groups of aeration components are respectively installed in the first-level variable pool group, the second-level variable pool group and the third-level variable pool group;

[0020] Among them, the aeration assembly and the submersible flow propeller are both electrically connected to the aeration control system.

[0021] In one embodiment, it further includes:

[0022] A plurality of valves are installed on the pipelines between the first-stage variable pool group, the second-stage variable pool group and the third-stage variable pool, and the valves are electrically connected to the aeration control system.

[0023] In one embodiment, it further includes:

[0024] Secondary sedimentation tank, the secondary sedimentation tank is connected to the tertiary variable tank group.

[0025] In one embodiment,

[0026] The first-level variable pool group includes:

[0027] A first variable tank, in which at least one submersible flow propeller and a water quality concentration detector are installed, and the first variable tank is connected to the water inlet pipe;

[0028] a first anoxic pool, the first anoxic pool is connected to the first variable pool through a pipeline, a valve and a flow meter are provided on the pipeline, and at least one submersible flow propeller and a water quality concentration detector are installed in the first anoxic pool;

[0029] The first aerobic pool is provided with at least one aeration component, an air volume meter and a water quality concentration detector, and the first aerobic pool is connected with the first anoxic pool.

[0030] In one embodiment,

[0031] The secondary variable pool group includes:

[0032] a second variable pool, the second variable pool is connected to the first aerobic pool through a pipeline, a flow meter and a valve are installed on the pipeline, and at least one submersible flow propeller, an aeration component, an air volume meter and a water quality concentration detector are installed in the second variable pool;

[0033] The first sludge return pipe has two ends which are respectively connected with the second variable tank and the first anoxic tank.

[0034] In one embodiment,

[0035] The three-level variable pool group includes:

[0036] a second anoxic pool, the second anoxic pool is connected to the second variable pool through a pipeline, a valve and a flow meter are connected to the pipeline, and at least one submersible flow propeller and a water quality concentration detector are installed in the second anoxic pool;

[0037] a second aerobic pool, wherein at least one set of aeration components, a submersible flow propeller, an air volume meter and a water quality concentration detector are connected to the second aerobic pool, and the second anoxic pool is connected to the second aerobic pool;

[0038] The second sludge return pipe has two ends connected to the second anoxic tank and the second aerobic tank respectively.

[0039] In one embodiment, it further includes:

[0040] The two ends of the sludge external return pipe are respectively connected to the secondary sedimentation tank and the second anoxic tank.

[0041] In one embodiment, it further includes:

[0042] A plurality of water level monitoring sensors are respectively installed in the first variable pool, the first anoxic pool, the first aerobic pool, the second variable pool, the second anoxic pool and the second aerobic pool, and the plurality of water level monitoring sensors are electrically connected to the aeration control system.

[0043] The sewage treatment device provided by the utility model has the following beneficial effects:

[0044] By dividing the biochemical pool into a primary variable pool group, a secondary variable pool group and a tertiary variable pool group and controlling them through an aeration control system, the different influent concentrations in the initial, mid-term and long-term stages of project operation in the urban sewage treatment plant are effectively solved, especially the negative impact of insufficient influent carbon source in the early stage on the denitrification effect of the sewage treatment device; precise aeration methods are used to control the aeration volume in the primary variable pool group, the secondary variable pool group and the tertiary variable pool group, while ensuring that the effluent meets the standards, the dissolved oxygen in the primary variable pool group, the secondary variable pool group and the tertiary variable pool group is maintained at a low level, which can reduce the aeration volume, reduce the energy consumption of the entire biochemical pool, and under certain conditions, promote short-range nitrification and denitrification, thereby enhancing the denitrification treatment effect of the process.

[0045] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0047] Figure 1 It is a schematic diagram of the structure of the utility model;

[0048] Figure 2 It is a schematic diagram of the principle structure of the utility model;

[0049] In the figure: 100, sewage treatment device;

[0050] 110, primary variable pool group; 111, first variable pool; 112, first anoxic pool; 113, first aerobic pool;

[0051] 120. Secondary variable tank group; 121. Second variable tank; 122. First sludge return pipe;

[0052] 130. three-stage variable tank group; 131. second anoxic tank; 132. second aerobic tank; 133. second sludge return pipe;

[0053] 140. Instrument assembly; 141. Flow meter; 142. Air volume meter; 143. Water quality concentration detector; 144. Pressure meter; 145. Water level monitoring sensor;

[0054] 150. Water treatment component; 151. Submersible flow generator; 152. Aeration component;

[0055] 160. Blower assembly;

[0056] 170. Aeration control system;

[0057] 180. Valve;

[0058] 190. Secondary sedimentation tank; 191. Sludge external return pipe. DETAILED DESCRIPTION

[0059] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0060] Figure 1 FIG. 1 shows a structural diagram of a sewage treatment device 100 according to an embodiment of the present application. Figure 1 As shown, the sewage treatment device 100 may include:

[0061] The biochemical pool includes a primary variable pool group 110, a secondary variable pool group 120 and a tertiary variable pool group 130, and the primary variable pool group 110, the secondary variable pool group 120 and the tertiary variable pool group 130 are connected in sequence through pipelines;

[0062] The instrument assembly 140 is respectively arranged inside the primary variable pool group 110, the secondary variable pool group 120 and the tertiary variable pool and on the pipelines connecting the three;

[0063] The water treatment components 150 are installed in the primary variable pool group 110, the secondary variable pool group 120 and the tertiary variable pool group 130 respectively;

[0064] A blower assembly 160, the blower assembly 160 is connected to the water treatment assembly 150 via an air duct;

[0065] The aeration control system 170 controls the instrument assembly 140 , the water treatment assembly 150 , and the blower assembly 160 .

[0066] In this embodiment, sewage enters through the primary variable tank group 110, and the water quality concentration of the sewage and the pressure in the primary variable tank group 110 are monitored by the instrument assembly 140, and the monitoring data is fed back to the aeration control system 170 in real time. The aeration control system 170 adjusts the water inlet ratio of the valve 180 according to the water quality parameters and the pressure feedback parameters, and adjusts the flow in the primary variable tank group 110 by adjusting the opening of the valve 180 by the pressure feedback parameters. At the same time, the aeration control system 170 calculates the required dissolved oxygen concentration according to the water quality parameters. The air volume is calculated and the required air volume is converted, and a command is sent to the blower group. The blower supplies air volume to the water treatment component 150 according to the required air volume. Similarly, the blower adjusts the water quality parameters and pressure parameters in the secondary variable pool group 120 and the tertiary variable pool group 130, so that each area of ​​the biochemical pool reaches its biochemical best dissolved oxygen concentration. The dissolved oxygen in the water treatment component 150 can also be accurately controlled to be at a low level, which can achieve short-range nitrification and denitrification, save more aeration volume, and reduce the inhibitory effect of carbon sources on denitrification reactions, thereby enhancing the denitrification effect.

[0067] The sewage and the return sludge are anaerobically treated in the primary variable tank group 110, and the treated water is diverted. Through the arrangement of the secondary variable tank group 120 and the tertiary variable tank group 130, the secondary variable tank group 120 and the tertiary variable tank group 130 can be switched between an aerobic environment and an anoxic environment according to demand, so that the primary variable tank group 110, after treating the sewage and the return sludge, undergoes nitrification and denitrification treatment through the secondary variable tank group 120 and the tertiary variable tank group 130, and the The over-distributed water volume can ensure the carbon source supply of the secondary variable pool group 120 and the tertiary variable pool group 130, and adjust the sewage retention time of the secondary variable pool group 120 and the tertiary variable pool group 130 through the valve 180. By setting the secondary water distribution for the secondary variable pool group 120 and the tertiary variable pool group 130, it is ensured that the carbon source (COD) in the secondary variable pool group 120 and the tertiary variable pool group 130 is replenished in time, reducing the input of additional carbon source agents and reducing production costs;

[0068] It should be noted that the secondary variable pool group 120 and the tertiary variable pool group 130 adjust the valves of the aeration pipeline according to the numerical feedback of the DO monitoring instrument in the pool body (the DO monitoring instrument is installed in the primary variable pool group 110, the secondary variable pool group 120 and the tertiary variable pool group 130 respectively), thereby adjusting the aerobic and anoxic environments of the secondary variable pool group 120 and the tertiary variable pool group 130. For example: in the aerobic zone: the dissolved oxygen DO value is controlled at 2-4 mg / l; in the anoxic zone, it is controlled at 0.2-0.5 mg / l.

[0069] It effectively solves the problem of different influent concentrations in the initial, mid-term and long-term operation of urban sewage treatment plants, especially the negative impact of insufficient influent carbon source in the early stage on the denitrification effect of the sewage treatment device 100; in the primary variable tank group 110, the secondary variable tank group 120 and the tertiary variable tank group 130, the aeration volume is controlled according to the numerical feedback of the DO monitoring instrument in the tank body and the feedback value. For example: in the aerobic zone: the dissolved oxygen DO value is controlled at 2-4 mg / l; in the anoxic zone, it is controlled at 0.2-0.5 mg / l. While ensuring that the effluent ammonia nitrogen meets the standard, the dissolved oxygen in the primary variable tank group 110, the secondary variable tank group 120 and the tertiary variable tank group 130 is maintained at a low level, which can promote short-range nitrification and denitrification under certain conditions, thereby enhancing the denitrification treatment effect of the process;

[0070] Furthermore, the sewage achieves the purpose of nitrification and phosphorus removal in the primary variable tank group 110, the secondary variable tank group 120 and the tertiary variable tank group 130;

[0071] It should be noted that the corresponding inflow water volume and water quality load can be calculated in the initial, mid-term and long-term periods. The project design is generally constructed according to the long-term plan, but the water source of the water plant is greatly affected by the construction and improvement of the off-site pipeline network and whether the rainwater and sewage are completely separated. Therefore, the sewage water volume and water quality in the initial stage of project operation can only reach 50% to 70% of the design value. With the improvement of the off-site pipeline network project, the water inflow of the sewage plant gradually increases and tends to the original design value.

[0072] It can also be understood as dry and rainy seasons. Even in the same operating period, the amount and quality of sewage water in the dry and rainy seasons are quite different. Generally, the amount of water is large in the rainy season, and the concentration of water quality is low, while the opposite is true in the dry season.

[0073] DO monitoring instrument is a common DO online detection instrument on the market, which can detect the DO value (the content of oxygen dissolved in water) in water;

[0074] The instrument assembly 140 is used to monitor the water quality and quantity parameters in the primary variable tank group 110, the secondary variable tank group 120 and the tertiary variable tank group 130 (the water quality and quantity parameters include: COD, ammonia nitrogen, total nitrogen, total phosphorus, SS and other indicators. When treating sewage, existing sewage treatment plants will monitor the water quality and quantity parameters in the sewage), as well as the pressure in the primary variable tank group 110, the secondary variable tank group 120 and the tertiary variable tank group 130, and feed back various parameters to the aeration control system 170;

[0075] The aeration control system 170 adjusts the flow of the valve 180 through electrical signal feedback, thereby controlling the concentration of dissolved oxygen in the biochemical pool;

[0076] According to the project scale, the design selection of the blower assembly 160 has a maximum air volume, and the original design air-water ratio is generally 3 to 5. The valve 180 is controlled according to the DO value and the flow meter indication feedback of the aeration pipeline. The opening of the valve 180 is adjustable from 0 to 100%, thereby adjusting the cross-sectional area of ​​the air pipe in the pipeline, thereby achieving the adjustment of the air volume.

[0077] Valves 180 are connected between the primary variable pool group 110, the secondary variable pool group 120 and the tertiary variable pool group 130. When the sewage water volume is small, the primary variable pool group 110 can be closed and the secondary variable pool group 120 and the tertiary variable pool group 130 can be operated separately.

[0078] like Figure 1-2 As shown, in one embodiment,

[0079] The instrument assembly 140 includes:

[0080] A plurality of flow meters 141, wherein the plurality of flow meters 141 are respectively installed on the pipelines, and the flow meters 141 are electrically connected to the aeration control system 170;

[0081] A plurality of air volume meters 142, wherein the plurality of air volume meters 142 are respectively installed in the first variable tank group 110, the second variable tank group 120 and the third variable tank group 130, and the air volume meters 142 are electrically connected to the aeration control system 170;

[0082] A plurality of water quality concentration detectors 143, wherein the plurality of water quality concentration detectors 143 are respectively installed in the primary variable tank group 110, the secondary variable tank group 120 and the tertiary variable tank group 130, and the water quality concentration detectors 143 are electrically connected to the aeration control system 170;

[0083] A plurality of pressure instruments 144 are respectively connected to the primary variable tank group 110 , the secondary variable tank group 120 and the tertiary variable tank group 130 .

[0084] In this embodiment, by setting the flow meter 141 on each pipeline, the flow of sewage and return sludge in the first-level variable tank group 110, the second-level variable tank group 120 and the third-level variable tank group 130 is monitored, and the information is fed back to the aeration control system 170. The aeration control system 170 feeds back the air volume demand according to the DO value. The air volume can be calculated from the pipeline cross-section and wind speed, and the pipeline cross-section is adjusted by valve control.

[0085] Control the closing and opening of valve 180;

[0086] The air volume generated by the blower unit is monitored by the air volume meter 142. The air supply pipeline is equipped with a pressure gauge and a gas flow meter, and the information is fed back to the aeration control system 170. According to the air volume generated by the blower unit monitored by the air volume meter 142, the air volume of the blower unit is controlled by the aeration control system 170.

[0087] The proportion of sewage and returned sludge in the primary variable tank group 110, the secondary variable tank group 120 and the tertiary variable tank group 130 is monitored by a water quality concentration detector 143 (the proportion of sludge return (external return) in the secondary sedimentation tank is 20% to 100%. The proportion of mixed liquor return (internal return) in the biochemical tank is 200% to 400%), and the information is fed back to the aeration control system 170, and the aeration control system 170 controls the flow of the valve 180 according to the feedback information;

[0088] The wind pressure in the first-stage variable tank group 110, the second-stage variable tank group 120 and the third-stage variable tank group 130 is monitored by the pressure meter 144, and the data is fed back to the aeration control system 170. The opening of the valve 180 is controlled according to the feedback information to adjust the air supply flow.

[0089] like Figure 1 As shown, in one embodiment,

[0090] The water treatment assembly 150 includes:

[0091] A plurality of submersible flow generators 151, wherein the plurality of submersible flow generators 151 are respectively installed in the first-stage variable pool group 110, the second-stage variable pool group 120 and the third-stage variable pool;

[0092] Three groups of aeration components 152, the three groups of aeration components 152 are respectively installed in the primary variable pool group 110, the secondary variable pool group 120 and the tertiary variable pool group 130;

[0093] The aeration assembly 152 and the submersible flow propeller 151 are both electrically connected to the aeration control system 170 .

[0094] In this embodiment, the submersible flow impeller 151 and the aeration assembly 152 are both controlled by the aeration control system 170. The aeration control system 170 controls the submersible flow impeller 151 to start according to the amount of sewage and return sludge, so that the incoming sewage and the return sludge are fully mixed, and the sludge containing microorganisms is ensured not to settle, thereby improving the treatment effect of microorganisms;

[0095] The aeration assembly 152 allows air to be transferred into the sewage in the form of tiny bubbles, thereby controlling the oxygen content in the primary variable tank group 110, the secondary variable tank group 120, and the tertiary variable tank;

[0096] The aeration assembly 152 may include an aeration branch pipe, a backwash device, an aeration plate, or a perforated pipe.

[0097] like Figure 1 As shown, in one embodiment, it also includes:

[0098] A plurality of valves 180 are installed on the pipelines between the primary variable tank group 110 , the secondary variable tank group 120 and the tertiary variable tank. The valves 180 are electrically connected to the aeration control system 170 .

[0099] In this embodiment, the opening of the valve 180 is controlled by the aeration control system 170 according to the feedback information of the flow meter 141 , the air volume meter 142 , the pressure gauge and the water quality concentration detector 143 collected by the aeration control system 170 .

[0100] like Figure 1 As shown, in one embodiment, it also includes:

[0101] The secondary sedimentation tank 190 is connected to the tertiary variable tank group 130 .

[0102] In one embodiment,

[0103] The primary variable pool group 110 includes:

[0104] A first variable pool 111, in which at least one submersible flow propeller 151 and a water quality concentration detector 143 are installed, and the first variable pool 111 is connected to the water inlet pipe;

[0105] A first anoxic pool 112, the first anoxic pool 112 is connected to the first variable pool 111 through a pipeline, a valve 180 and a flow meter 141 are provided on the pipeline, and at least one submersible flow propeller 151 and a water quality concentration detector 143 are installed in the first anoxic pool 112;

[0106] The first aerobic tank 113 , in which at least one aeration component 152 , an air volume meter 142 and a water quality concentration detector 143 are installed, is connected to the first anoxic tank 112 .

[0107] In this embodiment, the sewage enters the first variable tank 111, and the submersible flow propeller 151 in the first variable tank 111 is controlled by the aeration control system 170 to fully mix the sewage and the sludge;

[0108] The mixed sludge and sewage enter the first anoxic tank 112. Since the first anoxic tank 112 is connected to the first aerobic tank 113, the feedback information obtained by the aeration control system 170 selects to start the submersible flow propeller 151 in the first anoxic tank 112 or to start the aeration component 152 in the first aerobic tank 113 to perform anoxic or aerobic treatment on the sewage.

[0109] like Figure 1 As shown, in one embodiment,

[0110] The secondary variable pool group 120 includes:

[0111] The second variable pool 121 is connected to the first aerobic pool 113 through a pipeline, a flow meter 141 and a valve 180 are installed on the pipeline, and at least one submersible flow propeller 151, an aeration component 152, an air volume meter 142 and a water quality concentration detector 143 are installed in the second variable pool 121;

[0112] The first sludge return pipe 122 has two ends connected to the second variable tank 121 and the first anoxic tank 112 respectively.

[0113] In this embodiment, a submersible flow propeller 151 and an aeration component 152 are provided in the second variable tank 121. The submersible flow propeller 151 or the aeration component 152 is started according to the feedback information of the aeration control system 170 to perform aerobic or anoxic treatment on the sewage, so that nitrification and denitrification treatment can be further performed after the anaerobic operation of the sewage.

[0114] The first sludge return pipe 122 returns the sludge in the second variable tank 121 to the first anoxic tank 112, and is mixed with the sewage in the first anoxic tank 112 for further anaerobic or aerobic treatment.

[0115] like Figure 1 As shown, in one embodiment,

[0116] The three-level variable pool group 130 includes:

[0117] A second anoxic pool 131, the second anoxic pool 131 is connected to the second variable pool 121 through a pipeline, a valve 180 and a flow meter 141 are connected to the pipeline, and at least one submersible flow propeller 151 and a water quality concentration detector 143 are installed in the second anoxic pool 131;

[0118] A second aerobic pool 132, wherein at least one aeration assembly 152, a submersible flow propeller 151, an air volume meter 142 and a water quality concentration detector 143 are connected to the second aerobic pool 132, and the second anoxic pool 131 and the second aerobic pool 132 are connected;

[0119] The second sludge return pipe 133 has two ends connected to the second anoxic tank 131 and the second aerobic tank 132 respectively.

[0120] In this embodiment, the second anoxic tank 131 is connected to the second aerobic tank 132. According to the feedback information of the aeration control system 170, the submersible flow propeller 151 or the aeration component 152 is started to select the sewage in the second anoxic tank 131 and the second aerobic tank 132 for further treatment.

[0121] like Figure 1 As shown, in one embodiment, it also includes:

[0122] The sludge external return pipe 191 has two ends connected to the secondary sedimentation tank 190 and the second anoxic tank 131 respectively.

[0123] In this embodiment, the sludge external return pipe 191 transports the deposited sludge in the secondary sedimentation tank 190 back to the second anoxic tank 131 for further mixing and reaction with the sewage.

[0124] In one embodiment, it further includes:

[0125] A plurality of water level monitoring sensors 145 are respectively installed in the first variable tank 111 , the first anoxic tank 112 , the first aerobic tank 113 , the second variable tank 121 , the second anoxic tank 131 and the second aerobic tank 132 , and the plurality of water level monitoring sensors 145 are electrically connected to the aeration control system 170 .

[0126] In this embodiment, the water level monitoring sensor 145 monitors the sewage in the first variable tank 111, the first anoxic tank 112, the first aerobic tank 113, the second variable tank 121, the second anoxic tank 131 and the second aerobic tank 132, and feeds back the water level information to the aeration control system 170. The aeration control system 170 controls the opening of each valve 180 according to the water level to control the water volume in each area.

[0127] The functions of each module in each device of the embodiment of the present utility model can refer to the corresponding description in the above method, which will not be repeated here.

[0128] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0129] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0130] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A sewage treatment device, characterized in that: include: A biochemical pool, wherein the biochemical pool comprises a primary variable pool group, a secondary variable pool group and a tertiary variable pool group, wherein the primary variable pool group, the secondary variable pool group and the tertiary variable pool group are sequentially connected by pipelines; Instrument components, the instrument components are respectively arranged inside the primary variable pool group, the secondary variable pool group and the tertiary variable pool and on the pipelines connecting the three; Water treatment components, the water treatment components are respectively installed in the first-level variable pool group, the second-level variable pool group and the third-level variable pool group; a blower assembly, the blower assembly being connected to the water treatment assembly; An aeration control system controls the instrument assembly, the water treatment assembly and the blower assembly.

2. The sewage treatment device according to claim 1, characterized in that: The instrument assembly comprises: A plurality of flow meters, wherein the plurality of flow meters are respectively installed on the pipelines, and the flow meters are electrically connected to the aeration control system; A plurality of air volume meters, wherein the plurality of air volume meters are respectively installed in the first-level variable tank group, the second-level variable tank group and the third-level variable tank group, and the air volume meters are electrically connected to the aeration control system; A plurality of water quality concentration detectors, wherein the plurality of water quality concentration detectors are respectively installed in the first-level variable tank group, the second-level variable tank group and the third-level variable tank group, and the water quality concentration detectors are electrically connected to the aeration control system; A plurality of pressure instruments are respectively connected to the primary variable tank group, the secondary variable tank group and the tertiary variable tank group.

3. The sewage treatment device according to claim 2, characterized in that: The water treatment component comprises: A plurality of submersible flow-makers, wherein the plurality of submersible flow-makers are respectively installed in the first-level variable pool group, the second-level variable pool group and the third-level variable pool; three groups of aeration components, the three groups of aeration components are respectively installed in the first-level variable pool group, the second-level variable pool group and the third-level variable pool group; Wherein, the aeration assembly and the submersible flowmaker are both electrically connected to the aeration control system.

4. The sewage treatment device according to claim 3, characterized in that: Also includes: A plurality of valves are installed on pipelines between the first-stage variable pool group, the second-stage variable pool group and the third-stage variable pool, and the valves are electrically connected to the aeration control system.

5. The sewage treatment device according to claim 4, characterized in that: Also includes: A secondary sedimentation tank is connected to the tertiary variable tank group.

6. The sewage treatment device according to claim 5, characterized in that: The primary variable pool group includes: A first variable tank, in which at least one submersible flow propeller and a water quality concentration detector are installed, and the first variable tank is connected to a water inlet pipe; a first anoxic tank, wherein the first anoxic tank is connected to the first variable tank via a pipeline, the pipeline is provided with the valve and the flow meter, and at least one submersible flow propeller and a water quality concentration detector are installed in the first anoxic tank; The first aerobic tank is provided with at least one aeration component, an air volume meter and a water quality concentration detector, and the first aerobic tank is connected with the first anoxic tank.

7. The sewage treatment device according to claim 6, characterized in that: The secondary variable pool group comprises: A second variable tank, wherein the second variable tank is connected to the first aerobic tank through a pipeline, the flow meter and the valve are installed on the pipeline, and at least one of the submersible flow propeller, the aeration component, the air volume meter and the water quality concentration detector is installed in the second variable tank; A first sludge return pipe, wherein both ends of the first sludge return pipe are respectively connected to the second variable tank and the first anoxic tank.

8. The sewage treatment device according to claim 7, characterized in that: The three-level variable pool group includes: A second anoxic tank, wherein the second anoxic tank is connected to the second variable tank via a pipeline, the pipeline is connected to the valve and the flow meter, and at least one submersible flow propeller and a water quality concentration detector are installed in the second anoxic tank; a second aerobic tank, wherein at least one set of the aeration components, the submersible flow propeller, the air volume meter and the water quality concentration detector are connected to the second aerobic tank, and the second anoxic tank is connected to the second aerobic tank; A second sludge return pipe, wherein both ends of the second sludge return pipe are respectively connected to the second anoxic tank and the second aerobic tank.

9. The sewage treatment device according to claim 8, characterized in that: Also includes: The sludge external return pipe has two ends connected to the second sedimentation tank and the second anoxic tank respectively.

10. The sewage treatment device according to claim 9, characterized in that: Also includes: A plurality of water level monitoring sensors are respectively installed in the first variable tank, the first anoxic tank, the first aerobic tank, the second variable tank, the second anoxic tank and the second aerobic tank, and the plurality of water level monitoring sensors are electrically connected to the aeration control system.

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