Micro-power sewage treatment equipment

Abstract

The utility model provides micro-power sewage treatment equipment which comprises a reaction tank, the reaction tank is used for containing sewage to be treated, an aeration assembly and a sewage discharge assembly are respectively arranged in the reaction tank, the aeration assembly and the sewage discharge assembly are respectively communicated to gas injection equipment, and the gas injection equipment aerates the sewage to be treated through the aeration assembly. The inlet end of the pollution discharge assembly is located below the water body of the to-be-treated sewage, the outlet end of the pollution discharge assembly is located outside the water body of the to-be-treated sewage, and the gas injection equipment injects gas into the pollution discharge assembly for gas stripping pollution discharge of the reaction tank. According to the micro-power sewage treatment equipment disclosed by the utility model, the reaction tank is arranged, so that dead angles of water flow can be reduced, and the water flocculation degree is improved, so that mud and water are mixed more sufficiently, the removal efficiency of pollutants is improved, and the sewage treatment device can keep a better sewage treatment effect under a smaller volume.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, in particular to a micro-power sewage treatment device. Background Art

[0002] The SBR process is also called the intermittent aeration activated sludge process or the sequencing batch activated sludge process (Sequencing Batch Reactor), referred to as the SBR process. Its main feature is to treat sewage in batches in the same reaction tank, using an intermittent operation mode. Each reaction tank has the functions of an aeration tank and a secondary sedimentation tank. Therefore, a secondary sedimentation tank and a sludge return section are no longer required, and generally, a water quality or water quantity regulating tank is not required. The entire treatment process of the SBR sewage treatment process is actually controlled and operated in a reactor. After the sewage enters the reaction tank, different treatments are carried out in sequence. Generally speaking, a control operation cycle of the SBR process reaction tank includes 5 stages (water inlet period, aeration and oxygenation period, sedimentation period, drainage period, and idle waiting period).

[0003] At present, the integrated equipment system for rural sewage treatment faces the problems of large equipment footprint and large initial investment, unstable treatment effect and high operating costs due to factors such as imperfect pipeline network. In view of this, the traditional intermittent aerated activated sludge process is improved and simplified and integrated into an integrated equipment, and applied to the current rural domestic sewage treatment. The application of suspended composite fillers can give full play to the function of biofilm, reduce the sludge concentration in the reaction tank, and help to further reduce the effluent SS index. Utility Model Content

[0004] In view of this, the utility model aims to propose a micro-power sewage treatment equipment to solve the problem of large equipment footprint and high investment cost in the prior art sewage treatment integrated equipment system.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A micro-power sewage treatment device comprises a reaction tank, which is used to hold sewage to be treated. An aeration component and a sewage discharge component are respectively arranged in the reaction tank, and the aeration component and the sewage discharge component are respectively connected to an air injection device. The air injection device aerates the sewage to be treated through the aeration component. The inlet end of the sewage discharge component is located below the water body of the sewage to be treated, and the outlet end of the sewage discharge component is located outside the water body of the sewage to be treated. The air injection device injects air into the sewage discharge component for air lift sewage discharge in the reaction tank.

[0007] Furthermore, the aeration assembly includes a first tube body, and the sewage discharge assembly includes a second tube body. The inlet ends of the first tube body and the second tube body are respectively connected to the gas injection equipment. The outlet end of the first tube body is installed with an aeration component. The outlet end of the second tube body is located below the water body for treating sewage. A sewage discharge pipe is arranged on the second tube body, and the outlet end of the sewage discharge pipe is located outside the water body for treating sewage.

[0008] Furthermore, a one-way valve is provided on the second tube body, and the one-way valve is located between the outlet end of the second tube body and the inlet end of the third tube body, and the one-way valve is used to prevent the medium in the third tube body from flowing back into the reaction tank.

[0009] Furthermore, the second pipe body is provided with an air lift first mud discharge electric valve, the first pipe body is provided with an aeration electric valve, and the sewage pipe is provided with a first mud discharge electric valve.

[0010] Furthermore, a support portion is provided in the reaction tank, and the support portion is used to install a composite filler for culturing reaction microorganisms.

[0011] Furthermore, the composite filler is fiber filaments or plastic boards.

[0012] Furthermore, a dosing component is arranged outside the reaction tank, the dosing component includes a dosing barrel, a stirring part is arranged inside the dosing barrel, the dosing barrel is connected to the reaction tank through a fourth pipe body, and a dosing pump is arranged on the fourth pipe body.

[0013] Furthermore, a check valve is provided on the fourth pipe body.

[0014] Furthermore, the stirring part includes a fifth tube body, the inlet end of the fifth tube body is connected to the gas injection equipment, and the outlet end of the fifth tube body is located inside the dosing barrel.

[0015] Furthermore, a first detection component for measuring the water level of the sewage to be treated is arranged in the reaction tank.

[0016] Furthermore, a drainage pipe is arranged on the reaction tank, and a drainage electric valve is arranged on the drainage pipe.

[0017] Furthermore, the reaction tank is connected to a storage tank for wastewater to be treated through a sixth pipe body, a second detection component is arranged in the storage tank, and a water inlet lift pump is arranged on the sixth pipe body, and the water inlet lift pump is located in the storage tank.

[0018] Furthermore, the first detection component and the second detection component are laser beam sensors or duckbill plates respectively.

[0019] Furthermore, the sewage treatment method of the micro-power sewage treatment equipment comprises the following steps:

[0020] S1, introducing the wastewater to be treated from the storage tank into the reaction tank through the water inlet lift pump;

[0021] S2. Aerating the wastewater to be treated in the reaction tank by means of the gas injection device for a preset time;

[0022] S3, stop aeration and let the reaction tank stand still;

[0023] S4, decanting water, opening the electric drain valve, and draining the preset water body;

[0024] S5. Open the air lift sludge discharge electric valve, close the aeration electric valve, and discharge the sewage from the reaction tank.

[0025] Compared with the prior art, the micro-powered sewage treatment equipment described in the present invention has the following features:

[0026] Beneficial effects:

[0027] (1) The micro-power sewage treatment equipment described in the utility model is provided with a reaction tank to reduce dead corners of water flow and increase the degree of water turbulence, thereby making the mud and water mix more fully and improving the removal efficiency of pollutants. The sewage treatment device can maintain a good sewage treatment effect in a smaller volume. When in use, the aeration component and the sewage discharge component are integrated in the same reaction tank, which occupies a small area. It can be installed in an underground or semi-underground manner according to the requirements of the installation site, and can be used in different operating conditions. Compared with the same processing capacity specifications, the length of this equipment is much shorter than that of conventional container-type equipment, which is convenient for transportation and is particularly suitable for mountainous areas, hilly areas and rural areas where there is insufficient space for station construction.

[0028] (2) The micro-power sewage treatment equipment described in the utility model ensures the treatment effect in different time periods in the same space in the same reaction tank, ensures the effect in the anaerobic / anoxic time period and the sufficient contact between water and oxygen in the aerobic time period, and provides a sufficient fluidized environment for the combined hanging filler, avoiding the problem of low oxygen dissolution rate caused by insufficient tank depth, improving the effective utilization rate of oxygen, and reducing the energy consumption of the air pump.

[0029] (3) The micro-power sewage treatment equipment described in the utility model has a reaction tank that is an integrated structure of PVC casting or carbon steel welding. The PVC material box or the anti-corrosion carbon steel box is cast, which has the advantages of strong corrosion resistance and long service life. It can extend the equipment reset time and reduce the equipment reset cost. During the operation period of more than ten years or even decades, it can save the equipment replacement cost and equipment operation and maintenance cost for the investor as much as possible.

[0030] (4) In the micro-power sewage treatment equipment described in the utility model, both the aeration component and the sewage discharge component are powered by the gas injection device, which reduces the power source, saves equipment costs, and reduces energy consumption.

[0031] (5) In the micro-powered sewage treatment equipment described in the present invention, the outlet end of the fifth tube body is located inside the medicine-adding barrel, and the gas injection device is injected into the medicine-adding barrel through the fifth tube body to achieve pneumatic stirring of the medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0033] Figure 1 This is a schematic diagram of the structure in the reaction pool described in the embodiment of the utility model;

[0034] Figure 2 This is a schematic diagram of the working principle of a micro-power sewage treatment device described in an embodiment of the utility model.

[0035] Description of reference numerals:

[0036] 1-reaction tank; 11-first detection component; 12-drain pipe; 13-drain electric valve; 2-aeration component; 21-first pipe body; 22-aeration electric valve; 23-aeration component; 3-drainage component; 31-second pipe body; 32-drainage pipe; 33-check valve; 34-gas lift mud discharge electric valve; 35-first mud discharge electric valve; 4-gas injection equipment; 5-support part; 51-combined filler; 6-dosing component; 61-dosing barrel; 62-fourth pipe body; 63-check valve; 64-fifth pipe body; 7-storage tank; 71-second detection component; 72-sixth pipe body; 73-water inlet lift pump. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] like Figure 1-Figure 2 As shown, a micro-power sewage treatment equipment includes a reaction tank 1, the reaction tank 1 is used to hold the sewage to be treated, an aeration component 2 and a sewage discharge component 3 are respectively arranged in the reaction tank 1, the aeration component 2 and the sewage discharge component 3 are respectively connected to an injection device 4, the injection device 4 of this embodiment is an air pump of the prior art, the injection device 4 aerates the sewage to be treated through the aeration component 2, the inlet end of the sewage discharge component 3 is located below the water body of the sewage to be treated, and the outlet end of the sewage discharge component 3 is located outside the water body of the sewage to be treated, the injection device 4 injects air into the sewage discharge component 3 for gas lift sewage discharge of the reaction tank 1, and a reaction tank 1 is set. Pool 1 can reduce dead corners of water flow and increase the degree of water turbulence, thereby making the mud and water mix more fully and improving the removal efficiency of pollutants, so that the sewage treatment device can maintain a good sewage treatment effect in a smaller volume. When in use, the aeration component 2 and the sewage discharge component 3 are integrated in the same reaction pool 1, which occupies a small area. It can be installed in an underground or semi-underground manner according to the requirements of the installation site, and can be used in different operating conditions. Compared with the same processing capacity specifications, this equipment is much shorter than the conventional container equipment, which is convenient for transportation and is particularly suitable for mountainous areas, hills and rural areas where there is insufficient space for station construction.

[0042] A support portion 5 is provided in the reaction tank 1, and the support portion 5 is used to install a composite filler 51 for cultivating reaction microorganisms. The composite filler 51 is a PVC raw material skeleton and a aldehyded vinylon filament installed thereon. The same reaction tank 1 ensures the treatment effect in different time periods in the same space, ensures the effect in the anaerobic / anoxic time period and the full contact between water and oxygen in the aerobic time period, and provides a sufficient fluidized environment for the composite suspension filler, avoiding the problem of low oxygen dissolution rate caused by insufficient tank depth, improving the effective utilization rate of oxygen, and reducing the energy consumption of the air pump.

[0043] The operating conditions of the reaction tank 1 can be set by the staff according to the actual situation to meet the sedimentation depth requirements of the sedimentation tank, ensure the stability of the sedimentation effect of the tank body, avoid the unstable treatment effect due to insufficient design depth, and facilitate the later operation and maintenance of the equipment and the stability of the effluent water quality during operation.

[0044] The reaction tank 1 is an integrated structure of PVC casting or carbon steel welding. The casting forms a PVC material box or a carbon steel box with good anti-corrosion, which has the advantages of strong corrosion resistance and long service life. It can extend the equipment reset time and reduce the equipment reset cost. In the operation period of more than ten years or even decades, it can save the equipment replacement cost and equipment operation and maintenance cost for investors as much as possible.

[0045] The aeration assembly 2 includes a first tube body 21, and the sewage discharge assembly 3 includes a second tube body 31. The inlet ends of the first tube body 21 and the second tube body 31 are respectively connected to the gas injection device 4. The outlet end of the first tube body 21 is installed with an aeration component 23. The aeration component 23 is a nozzle or a nozzle in the prior art. The outlet end of the second tube body 31 is located below the water body for treating sewage. A sewage discharge pipe 32 is arranged on the second tube body 31. The outlet end of the sewage discharge pipe 32 is located outside the water body for treating sewage. The aeration assembly 2 and the sewage discharge assembly 3 are both powered by the gas injection device 4, which reduces the power source, saves equipment cost, and reduces energy consumption.

[0046] A one-way valve 33 is disposed on the second tube body 31 . The one-way valve 33 is located between the outlet end of the second tube body 31 and the inlet end of the third tube body. The one-way valve 33 is used to prevent the medium in the third tube body from flowing back into the reaction tank 1 .

[0047] An air lift first mud discharge electric valve is arranged on the second pipe body 31, an aeration electric valve is arranged on the first pipe body 21, and the first mud discharge electric valve is installed on the sewage pipe 32. The design and use of the air lift equipment and the frequency conversion control of the overall equipment can save energy consumption and reduce operating costs. When the organic component in the sewage is high, BOD5 / CODcr=0.5, and the biodegradability is good, it is most economical to adopt biological treatment methods to significantly reduce the organic content in the sewage.

[0048] A dosing component 6 is arranged outside the reaction tank 1, and the dosing component 6 includes a dosing barrel 61. A stirring part is arranged inside the dosing barrel 61. The dosing barrel 61 is connected to the reaction tank 1 through a fourth pipe body 62. A dosing pump is arranged on the fourth pipe body 62. A check valve 63 is arranged on the fourth pipe body 62 to prevent water in the reaction tank 1 from flowing into the dosing barrel 61.

[0049] The stirring part includes a fifth tube body 64, the inlet end of the fifth tube body 64 is connected to the gas injection device 4, the outlet end of the fifth tube body 64 is located inside the dosing barrel 61, and the gas injection device 4 is injected into the dosing barrel 61 through the fifth tube body 64 to achieve pneumatic stirring of the medicine.

[0050] A first detection component 11 for measuring the water level of the sewage to be treated is arranged in the reaction tank 1 so that the equipment processing capacity can be flexibly changed within a certain range according to the water volume adjustment program. A drain pipe 12 is arranged on the reaction tank 1, and a drain electric valve is arranged on the drain pipe 12 so that the water can be discharged from the reaction tank 1 in time.

[0051] The reaction tank 1 is connected to the storage tank 7 for the sewage to be treated through the sixth tube body 72. The storage tank 7 in this embodiment is a septic tank. A second detection component 71 is arranged in the storage tank 7, and a water inlet lift pump 73 is arranged on the sixth tube body 72. The water inlet lift pump 73 is located in the storage tank 7. The first detection component 11 and the second detection component 71 are respectively laser counter-radiation sensors or duckbill plates with micro switches installed in the prior art. Sensors or devices in other prior arts that can detect the lower and upper limits of the water level in the storage tank 7 or the reaction tank 1 may also be used, and they will not be repeated here.

[0052] In summary, this small micro-power sewage treatment equipment provides an efficient, economical and practical solution for sewage treatment in remote rural areas. Its micro-power design, sophisticated structure and simplified operation and maintenance methods make it show significant advantages and broad application prospects in treating decentralized rural sewage in remote areas.

[0053] When this embodiment is implemented, the basic range of water treatment is 1-10 tons per day, which can fully meet the requirements of sewage treatment in remote areas. At the same time, since the equipment is a micro-powered equipment, the energy consumption of the equipment is extremely small, which is particularly suitable for rural areas located in remote areas with scarce resources.

[0054] And the control method of this embodiment is controlled by a controller, and the control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and this article is mainly used to protect mechanical devices. The control method and circuit connection are not explained in detail in this article. In general, since the equipment is not installed with too many electrical components, the operation and maintenance of the equipment is relatively simple compared to traditional sewage treatment equipment. There is no need to arrange a professional operation and maintenance team to patrol the site every day, and there is no need to arrange special personnel to be on duty for a long time. The villagers are only responsible for checking the site, and when an abnormal situation occurs, they can contact the operation and maintenance personnel, or perform relevant operations under the guidance of the operation and maintenance personnel.

[0055] A micro-power sewage treatment method includes multiple cycles per day. In this embodiment, there are 3 cycles per day (24 hours), that is, each cycle is initially set to 8 hours (the time of each cycle is adjustable, so the number of daily cycles is also adjustable).

[0056] The 8-hour processing method for each cycle includes the following steps:

[0057] Water is introduced from 0:00 to 0.5:00 (a total of 0.5h), and the sewage to be treated is introduced into the reaction tank 1 from the septic tank through the water inlet lift pump 73. The stopping of the water inlet lift pump 73 is controlled not only by the end of the water inlet time, but also by the upper limit of the water level of the first detection component 11 in the reaction tank 1. When the water level of the reaction tank 1 reaches the high liquid point position, even if the water inlet time has not yet ended, the first detection component 11 transmits a signal to the controller, which still controls the water pump to stop running.

[0058] Aeration is performed from 0.5 to 5.0 (4.5 hours in total), that is, the gas injection assembly is started and operated during this period to supply gas to the reaction tank 1, which is controlled by the prior art time relay in the controller.

[0059] The sedimentation stage is carried out from the end of 5.0 hours to the end of 7.0 hours (a total of 2 hours), that is, the gas injection equipment 4 and the water inlet lift pump 73 are in a stopped state during this period of time.

[0060] The decanting is carried out from the end of 7.0 to the end of 8.0 (a total of 1 hour), that is, the decanting starts during this period, the drain electric valve is opened, and after the time period ends, the drain electric valve is closed. In addition to being controlled by time, the closing of the drain electric valve is also controlled by the lower limit of the water level of the first detection component 11, that is, when the set low liquid level is reached, even if it is not yet the end of the decanting time period, the lower limit of the water level still controls the drain electric valve to close and the decanting stops.

[0061] Each of the above time can be adjusted according to the time relay inside the controller. During the process, it is confirmed that the length of each cycle can be flexibly adjusted according to the actual situation to enable the equipment to achieve a certain range of daily sewage treatment capacity: about 0.1-2t.

[0062] Special case: When the water volume in the septic tank is insufficient, it is impossible to replenish water in the equipment during the period of 0 to 0.5 hours, that is, the water level in the septic tank has not reached the middle liquid level (not enough for the water intake in one cycle). At this time, the system does not enter a cycle of water intake-aeration-sedimentation-decantation operation, and enters the waiting period. Once the water volume in the septic tank in the system meets the water intake in one cycle, the system enters normal cycle operation.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A micro-power sewage treatment equipment, characterized in that: The invention comprises a reaction tank (1), wherein the reaction tank (1) is used to hold sewage to be treated, wherein an aeration component (2) and a sewage discharge component (3) are respectively arranged in the reaction tank (1), wherein the aeration component (2) and the sewage discharge component (3) are respectively connected to an air injection device (4), wherein the air injection device (4) aerates the sewage to be treated through the aeration component (2), wherein the inlet end of the sewage discharge component (3) is located below the water body of the sewage to be treated, and the outlet end of the sewage discharge component (3) is located outside the water body of the sewage to be treated, and wherein the air injection device (4) injects air into the sewage discharge component (3) for air lift sewage discharge of the reaction tank (1).

2. A micro-power sewage treatment equipment according to claim 1, characterized in that: The aeration assembly (2) comprises a first pipe body (21), and the sewage discharge assembly (3) comprises a second pipe body (31). The inlet ends of the first pipe body (21) and the second pipe body (31) are respectively connected to the gas injection device (4). The outlet end of the first pipe body (21) is installed with an aeration component (23). The outlet end of the second pipe body (31) is located below the water body for treating sewage. The second pipe body (31) is provided with a sewage discharge pipe (32). The outlet end of the sewage discharge pipe (32) is located outside the water body for treating sewage.

3. A micro-power sewage treatment equipment according to claim 2, characterized in that: A one-way valve (33) is provided on the second tube body (31). The one-way valve (33) is located between the outlet end of the second tube body (31) and the inlet end of the third tube body. The one-way valve (33) is used to prevent the medium in the third tube body from flowing back into the reaction tank (1).

4. The micro-power sewage treatment equipment according to claim 1 is characterized in that: A support portion (5) is arranged in the reaction tank (1), and the support portion (5) is used to install a composite filler (51) for culturing reaction microorganisms.

5. The micro-power sewage treatment equipment according to claim 1 is characterized in that: A dosing assembly (6) is arranged outside the reaction pool (1), and the dosing assembly (6) comprises a dosing barrel (61). A stirring portion is arranged inside the dosing barrel (61). The dosing barrel (61) is connected to the reaction pool (1) through a fourth tube (62), and a dosing pump is arranged on the fourth tube (62).

6. A micro-power sewage treatment equipment according to claim 5, characterized in that: The stirring part comprises a fifth tube body (64), the inlet end of the fifth tube body (64) is connected to the gas injection device (4), and the outlet end of the fifth tube body (64) is located inside the dosing barrel (61).

7. The micro-power sewage treatment equipment according to claim 1 is characterized in that: A drainage pipe (12) is provided on the reaction tank (1), and a drainage electric valve (13) is provided on the drainage pipe (12).

8. The micro-power sewage treatment equipment according to claim 1 is characterized in that: The reaction tank (1) is connected to a storage tank (7) for wastewater to be treated via a sixth pipe body (72); a second detection component (71) is arranged in the storage tank (7); and a water inlet lift pump (73) is arranged on the sixth pipe body (72); the water inlet lift pump (73) is located in the storage tank (7).

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