MBR (Membrane Bioreactor) sewage treatment experimental device based on flat sheet membrane

Abstract

The utility model belongs to the field of sewage treatment. The utility model provides an MBR (Membrane Biological Reactor) sewage treatment experimental device based on a flat sheet membrane, which is characterized in that a partition plate groove and a partition plate are arranged in a reactor main body to form a treatment cavity with adjustable tank capacity, the size of the treatment cavity is adjusted as required, and a flat sheet membrane component and an aeration device are arranged in the treatment cavity. The number of flat membranes is adjusted according to the size of the treatment cavity, so that small-scale experiment requirements are met. The sewage treatment experimental device is small in size, simple in structure, easy to operate, convenient to maintain and very suitable for being applied in a laboratory stage.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to an MBR sewage treatment experimental device based on a flat membrane. Background Art

[0002] With the development of industrialization and urbanization, the discharge of sewage is increasing day by day. In order to meet environmental protection requirements, sewage needs to be effectively treated. Sewage treatment technologies mainly include physical treatment, chemical treatment and biological treatment. Physical treatment technologies include sedimentation, filtration, centrifugal separation, etc., which are mainly used to remove suspended matter and impurities in sewage; chemical treatment technologies include neutralization, precipitation, oxidation-reduction, etc., which are mainly used to remove heavy metal ions, harmful chemicals, etc. in sewage; biological treatment technologies include activated sludge method, biofilm method and natural biological treatment method, etc., which are mainly used to remove organic matter and nutrients such as nitrogen and phosphorus in sewage.

[0003] MBR (Membrane Bioreactor) is a new sewage treatment technology that combines bioreactor with membrane separation technology. Compared with other sewage treatment technologies, MBR treats a high concentration of activated sludge and can withstand a higher load, so the treatment efficiency is higher. Through the filtering effect of the membrane, microorganisms and impurities in the sewage are trapped in the reactor, and the treated clean water is discharged at the same time, so the effluent quality is better. Therefore, the treated clean water is easy to recycle and reuse, such as for irrigation, landscape water, etc., thereby realizing the effective utilization of water resources.

[0004] Due to the high concentration of activated sludge in MBR, the volume of the reactor can be reduced compared with other sewage treatment equipment, thereby reducing the footprint. However, existing MBR equipment is usually used for large-scale industrial or urban sewage treatment. For small-scale or experimental application scenarios, its large equipment size, difficulty in operation, and maintenance difficulties limit its application in the experimental stage.

[0005] Therefore, there is still a need to develop a miniaturized MBR sewage treatment device that is easy to use and maintain to meet the experimental stage and needs. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an MBR sewage treatment experimental device based on a flat membrane, wherein the experimental device is provided with a partition groove and a partition in the reactor body to form a treatment chamber with adjustable tank capacity, the size of the treatment chamber is adjusted according to needs, a flat wood assembly and an aeration device are provided in the treatment chamber, and the number of flat membranes is adjusted according to the size of the treatment chamber, thereby meeting the needs of small-scale experiments. The sewage treatment experimental device is small in size, simple in structure, simple in operation and convenient in maintenance, and is very suitable for application in the laboratory stage.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] An MBR sewage treatment experimental device based on a flat membrane comprises:

[0009] The reactor body has an inner cavity; the inner cavity is provided with a partition groove, and a detachable partition matched with the partition groove, which is used to reduce the volume of the inner cavity to form a processing chamber;

[0010] A flat membrane assembly is disposed in the processing chamber; the number of the flat membranes contained therein is adjusted according to the volume of the processing chamber;

[0011] An aeration device is arranged in the treatment chamber and located at the bottom of the flat membrane assembly, and is used for providing dissolved oxygen.

[0012] The utility model forms a treatment chamber with adjustable tank capacity by arranging baffle grooves and baffles in the reactor body, adjusting the size of the treatment chamber as needed, arranging a flat membrane assembly and an aeration device in the treatment chamber, and adjusting the number of flat membranes according to the size of the treatment chamber, thereby meeting the needs of small-scale experiments. The sewage treatment experimental device is small in size, simple in structure, easy to operate and maintain, and is very suitable for application in the laboratory stage.

[0013] The following are preferred technical solutions of the present invention, but are not intended to be limitations of the technical solutions provided by the present invention. Through the following technical solutions, the technical objectives and beneficial effects of the present invention can be better achieved and realized.

[0014] As a preferred technical solution of the present invention, the number of flat membranes in the flat membrane assembly is ≤20, for example, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2 or 1.

[0015] As a preferred technical solution of the present utility model, the reactor body is a trough body with an opening at the upper end, and the upper end opening serves as a water inlet.

[0016] As a preferred technical solution of the present invention, the length and width of the trough body are independently selected from 450 to 700 mm, for example, 450 mm, 480 mm, 500 mm, 530 mm, 550 mm, 580 mm, 600 mm, 620 mm, 650 mm, 680 mm or 700 mm, and the height of the trough body is 500 to 800 mm, for example, 500 mm, 520 mm, 550 mm, 580 mm, 600 mm, 620 mm, 650 mm, 680 mm, 700 mm, 720 mm, 750 mm, 780 mm or 800 mm, but are not limited to the listed values, and other unlisted values ​​within the above numerical range are equally applicable.

[0017] As a preferred technical solution of the present utility model, the reactor body has an air inlet, and the aeration device is connected to an external air source through the air inlet.

[0018] As a preferred technical solution of the utility model, the aeration device includes a main air inlet pipe and an aeration pipe branching from the main air inlet pipe, and aeration holes are opened on the surface of the aeration pipe.

[0019] Preferably, at least one group of opposite aeration tubes is arranged on two opposite sides of the main air inlet pipe, and each group of aeration tubes is arranged parallel to each other.

[0020] As a preferred technical solution of the utility model, the flat membrane-based MBR sewage treatment experimental device also includes a water outlet device, and the water outlet device is connected to the water outlet of the reactor body.

[0021] As a preferred technical solution of the present utility model, the water outlet device has a pressure regulating module for achieving pressure regulation.

[0022] As a preferred technical solution of the utility model, the flat membrane-based MBR sewage treatment experimental device also includes a host, which is electrically connected to the aeration device and the water outlet device, and is used to monitor, judge, feedback and record pressure and aeration data, and control the aeration device and the water outlet device according to the data to achieve pressure and aeration regulation.

[0023] In MBR equipment, trans-membrane pressure drop (TMP) is an important operating parameter. Trans-membrane pressure drop is defined as the pressure required to drive water through the membrane, which is the difference between the water inlet pressure and the filtration pressure. The trans-membrane pressure drop required for a membrane with a smaller pore size is also larger. When the water temperature is low, the flux is high, and pollution occurs, the trans-membrane pressure drop is also high. Therefore, it is necessary to adjust the TMP in a targeted manner according to the actual sewage situation. The utility model sets a pressure regulating module in the water outlet device, so that the water outlet device can adjust the pressure while providing the water outlet function, thereby further adjusting the TMP. The utility model sets a host to monitor the change of pressure, thereby controlling the water outlet device to achieve targeted real-time adjustment of TMP. Furthermore, the host can monitor the change of aeration and control the aeration device, so that the water outlet device cooperates with the aeration device to adjust the pressure and the aeration process, thereby studying the relationship between good aeration and treatment effect.

[0024] As a preferred technical solution of the utility model, the water outlet device is a water outlet pump.

[0025] As a preferred technical solution of the utility model, the flat membrane-based MBR sewage treatment experimental device also includes a storage device, which is connected to the water outlet device and is used to store treated sewage.

[0026] Exemplarily, the present invention also provides an operation mode and operation method of the MBR sewage treatment experimental device based on a flat membrane, including:

[0027] In general use, first, the sewage to be treated is poured into the treatment chamber of the reactor body; then, the aeration device is turned on for aeration and timing, and the reaction is carried out according to the set residence time; after the reaction is completed, the water outlet device is turned on, and the water outlet device transports the separated sewage to the storage device for subsequent detection or treatment.

[0028] In addition, the tank capacity (and the size of the treatment chamber) can be adjusted according to the actual amount of treated water to be simulated, and the number of flat membranes in the flat membrane assembly can be adjusted accordingly; in addition, the pressure and aeration data can be monitored, judged, fed back and recorded by the host, and the aeration device and the water outlet device can be controlled according to the data to achieve TMP adjustment; or the pressure and aeration can be adjusted to study the relationship between aeration and treatment effect.

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] The utility model forms a treatment chamber with adjustable tank capacity by arranging baffle grooves and baffles in the reactor body, adjusting the size of the treatment chamber as needed, arranging a flat membrane assembly and an aeration device in the treatment chamber, and adjusting the number of flat membranes according to the size of the treatment chamber, thereby meeting the needs of small-scale experiments. The sewage treatment experimental device is small in size, simple in structure, easy to operate and maintain, and is very suitable for application in the laboratory stage.

[0031] The utility model can realize the regulation of pressure and aeration process through the pressure regulating module and the main machine, thereby further realizing the regulation of TMP, and is conducive to studying the relationship between aeration and treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the MBR sewage treatment experimental device based on a flat membrane in Example 1;

[0033] Figure 2 It is a schematic diagram of an aeration device in a flat membrane-based MBR sewage treatment experimental device of Example 1;

[0034] Among them, 1-reactor body, 2-flat membrane assembly, 3-aeration device, 4-baffle, 5-water outlet device, 6-storage device. DETAILED DESCRIPTION

[0035] In order to make the technical solution, purpose and advantages of the utility model clearer, the utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present utility model, 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 indirectly connected through an intermediate medium, or it can be the internal connection of two components. For the electrical and communication fields, it can be a wired connection or a wireless connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0039] In some specific embodiments, such as Figure 1 As shown, the utility model provides an MBR sewage treatment experimental device based on a flat membrane, comprising:

[0040] The reactor body 1 has an inner cavity; the inner cavity is provided with a partition groove, and a detachable partition 4 matched with the partition groove, which is used to reduce the volume of the inner cavity to form a processing chamber;

[0041] A flat membrane assembly 2 is arranged in the processing chamber; the number of flat membranes contained therein is adjusted according to the volume of the processing chamber;

[0042] The aeration device 3 is arranged in the treatment chamber and located at the bottom of the flat membrane module 2, and is used to provide dissolved oxygen.

[0043] In one embodiment, the number of flat-plate membranes in the flat-plate membrane module is ≤20.

[0044] In one embodiment, the reactor body 1 is a trough body with an opening at the upper end, and the upper end opening serves as a water inlet.

[0045] In one embodiment, the length and width of the trough body are independently selected from 450 to 700 mm, and the height of the trough body is 500 to 800 mm.

[0046] In one embodiment, the reactor body 1 has an air inlet, and the aeration device 3 is connected to an external air source through the air inlet.

[0047] In one embodiment, if Figure 2 As shown, the aeration device 3 includes a main air inlet pipe and an aeration pipe branching from the main air inlet pipe, and aeration holes are opened on the surface of the aeration pipe.

[0048] In one embodiment, at least one group of opposing aeration tubes are provided on opposite sides of the main air inlet pipe, and each group of aeration tubes are arranged parallel to each other.

[0049] In one embodiment, the flat membrane-based MBR sewage treatment experimental device further includes a water outlet device 5 , and the water outlet device 5 is connected to the water outlet of the reactor body 1 .

[0050] In one embodiment, the water outlet device 5 has a pressure regulating module for achieving pressure regulation.

[0051] In one embodiment, the flat membrane-based MBR sewage treatment experimental device also includes a host, which is electrically connected to the aeration device 3 and the water outlet device 5, and is used to monitor, judge, feedback and record pressure and aeration data, and control the aeration device 3 and the water outlet device 5 according to the data to achieve pressure and aeration regulation.

[0052] In one embodiment, the water outlet device 5 is a water outlet pump.

[0053] In one embodiment, the flat membrane-based MBR sewage treatment experimental device further includes a storage device 6 , which is connected to the water outlet device 5 and is used to store treated sewage.

[0054] In one embodiment, the storage device 6 is a storage tank.

[0055] Example 1

[0056] This embodiment provides a MBR sewage treatment experimental device based on a flat membrane. Figure 1 As shown, including:

[0057] The reactor body 1 is a tank body with an upper opening, which is 650 mm long, 500 mm wide and 700 mm high, and has an inner cavity, an air inlet and a water outlet; the upper opening is used as a water inlet for pouring sewage; a plurality of baffle grooves are arranged in parallel at the bottom of the inner cavity, and two baffle grooves are arranged on opposite baffles 4 to reduce the tank volume, so that the inner cavity is divided to form a processing chamber between the two baffles 4, and the volume of the processing chamber is 60% of the volume of the inner cavity;

[0058] A flat membrane assembly 2 is arranged in the processing chamber; the number of flat membranes contained is adjusted to 12 according to the volume of the processing chamber;

[0059] The aeration device 3 is arranged in the treatment chamber and located at the bottom of the flat membrane module 2, and is connected to an external air source through the air inlet to provide dissolved oxygen; Figure 2As shown, the aeration device 3 includes a main air inlet pipe and an aeration pipe branching from the main air inlet pipe, and the surface of the aeration pipe is provided with aeration holes; three groups of opposite aeration pipes are arranged on opposite sides of the main air inlet pipe, and each group of aeration pipes are arranged parallel to each other;

[0060] The water outlet device 5 is a water outlet pump connected to the water outlet of the reactor body 1 and has a pressure regulating module for water outlet and pressure regulation;

[0061] The storage device 6 is a storage tank connected to the water outlet of the water outlet device 5 and used to store the treated sewage;

[0062] The host is electrically connected to the aeration device 3 and the water outlet device 5, and is used to monitor, judge, feedback and record pressure and aeration data, and control the aeration device 3 and the water outlet device 5 according to the data to achieve pressure and aeration regulation.

[0063] The operation mode and operation method of the MBR sewage treatment experimental device based on the flat membrane obtained in this embodiment include:

[0064] First, the sewage to be treated is poured into the treatment chamber of the reactor body 1, and then the aeration device 3 is turned on for aeration and timing, and the reaction is carried out according to the set residence time. After the reaction is completed, the water outlet device 5 is turned on, and the water outlet device 5 transports the separated sewage to the storage device 6 for subsequent detection or treatment. The pressure and aeration data are monitored, judged, fed back and recorded by the host, and the aeration device 3 and the water outlet device 5 are controlled according to the data to achieve the adjustment of TMP.

[0065] The utility model uses the above embodiments to illustrate the detailed structural features of the utility model, but the utility model is not limited to the above detailed structural features, that is, it does not mean that the utility model must rely on the above detailed structural features to be implemented. Those skilled in the art should understand that any improvement to the utility model, equivalent replacement of the components selected by the utility model, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the utility model.

[0066] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0067] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0068] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A MBR sewage treatment experimental device based on a flat membrane, characterized in that: include: A reactor body (1) has an inner cavity; the reactor body (1) is a trough body with an upper opening, the upper opening serving as a water inlet; the length and width of the trough body are independently selected from 450 to 700 mm, and the height of the trough body is 500 to 800 mm; a plurality of baffle grooves are arranged in parallel at the bottom of the inner cavity, and opposite baffles (4) are arranged on two of the baffle grooves to reduce the tank volume, so that the inner cavity is divided to form a treatment chamber between the two baffles (4); A flat membrane assembly (2) is arranged in the processing chamber; the number of the flat membranes contained therein is adjusted according to the volume of the processing chamber; an aeration device (3), arranged in the treatment chamber and located at the bottom of the flat membrane module (2), and used for providing dissolved oxygen; A water outlet device (5), the water outlet device (5) being connected to the water outlet of the reactor body (1); the water outlet device (5) having a pressure regulating module for achieving pressure regulation; A host computer, the host computer is electrically connected to the aeration device (3) and the water outlet device (5), and is used to monitor, judge, feedback and record pressure and aeration data, and control the aeration device (3) and the water outlet device (5) according to the data, so as to achieve pressure and aeration regulation, and further achieve targeted real-time regulation of the TMP.

2. The MBR sewage treatment experimental device based on flat membrane according to claim 1 is characterized in that: The reactor body (1) has an air inlet, and the aeration device (3) is connected to an external air source via the air inlet.

3. The MBR sewage treatment experimental device based on flat membrane according to claim 1 is characterized in that: The aeration device (3) comprises a main air inlet pipe and an aeration pipe branching from the main air inlet pipe, and aeration holes are provided on the surface of the aeration pipe.

4. The MBR sewage treatment experimental device based on a flat membrane according to any one of claims 1 to 3, characterized in that: The water outlet device (5) is a water outlet pump.

5. The MBR sewage treatment experimental device based on a flat membrane according to any one of claims 1 to 3, characterized in that: The flat membrane-based MBR sewage treatment experimental device further comprises a storage device (6), wherein the storage device (6) is connected to the water outlet device (5) and is used to store treated sewage.

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