CN116282507A - Immersed MBR water production energy-saving device and control method thereof - Google Patents

Immersed MBR water production energy-saving device and control method thereof Download PDF

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Publication number
CN116282507A
CN116282507A CN202310279070.4A CN202310279070A CN116282507A CN 116282507 A CN116282507 A CN 116282507A CN 202310279070 A CN202310279070 A CN 202310279070A CN 116282507 A CN116282507 A CN 116282507A
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water
membrane
valve
producing
pump
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王文标
李勇
李石磊
张立志
张建树
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Shanghai Hones Environmental Protection Technology Co ltd
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Shanghai Hones Environmental Protection Technology Co ltd
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Priority to CN202310279070.4A priority Critical patent/CN116282507A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • C02F3/1273—Submerged membrane bioreactors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses an immersed MBR water production energy-saving device, which is provided with an MBR membrane tank and a clean water tank; a water collecting pipe and a liquid level meter are arranged on the MBR membrane tank, and a liquid level meter is arranged on the water collecting pipe; the water collecting pipe is sequentially communicated with the clean water tank through a second water producing valve and a first membrane water producing pump; the water collecting pipe is sequentially communicated with the clean water tank through the first water producing valve. The invention also discloses a control method of the immersed MBR water production energy-saving device. The invention fully utilizes the natural liquid level difference and reduces the energy consumption of the MBR water producing pump by more than 1/3 to 1/2.

Description

Immersed MBR water production energy-saving device and control method thereof
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an immersed MBR water production energy-saving device and a control method thereof.
Background
In the fields of sewage treatment and water resource recycling, MBR is also called a membrane bioreactor, is a novel water treatment technology combined by a membrane separation unit and a biological treatment unit, and can be divided into a flat membrane, a tubular membrane, a hollow fiber membrane and the like according to the membrane structure; the membrane pore diameter can be divided into a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane, a reverse osmosis membrane and the like.
With the improvement of MBR membrane materials, the price of the MBR membrane materials is gradually reduced, the MBR membrane materials are widely applied to sewage treatment, but the popularization and application of the MBR membrane materials are still restricted by higher running electricity consumption.
Membrane aeration scouring and produced water pumping are two major sources of electricity consumption for submerged MBRs. The submerged MBR produces water by pumping a water producing pump and forming negative pressure inside an MBR membrane. In the prior art, intermittent operation and the liquid level of a membrane pool are mainly adopted to control the start and stop of a water producing pump.
Those skilled in the art have carried out many studies on how to reduce the energy consumption of membrane aeration scouring, such as optimizing the layout of a membrane frame, adopting pulse aeration, etc., but have lacked attention on the energy consumption of water production.
Those skilled in the art are working to develop a more energy efficient submerged MBR water production energy saving technology.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide an energy-saving device capable of reducing water production and consumption of an immersed MBR and a control method thereof.
In order to achieve the technical purpose, the invention provides the following technical scheme: an immersed MBR water production energy-saving device is provided with an MBR membrane tank and a clean water tank;
a liquid level meter and a water collecting pipe are arranged on the MBR membrane tank;
the water collecting pipe is sequentially communicated with the clean water tank through a water producing valve or a water producing regulating valve and a first membrane water producing pump;
the water collecting pipe is sequentially communicated with the clean water tank through a water producing valve or a water producing regulating valve;
the water collecting pipe is sequentially communicated with the clean water tank through a first backwashing water valve and a first membrane backwashing water pump;
the water collecting pipe is sequentially communicated with the clean water tank through a second backwashing water valve and a second membrane backwashing water pump.
Further, the water producing valve is a first water producing valve and a second water producing valve;
the water collecting pipe is sequentially communicated with the clean water tank through a second water producing valve and a first membrane water producing pump;
the water collecting pipe is sequentially communicated with the clean water tank through a first water producing valve;
the water collecting pipe is sequentially communicated with the clean water tank through a water production regulating valve, a second membrane water production pump and a membrane water production flowmeter; and a pressure sensor is arranged on a pipeline between the water production regulating valve and the second membrane water production pump.
Further, the top outlet of the water collecting pipe is communicated with the inlet of the second water producing valve;
the outlet of the second water producing valve is communicated with the inlet of the first membrane water producing pump through a pressure sensor;
the top outlet of the water collecting pipe is communicated with the inlet of the first water producing valve, and the outlet of the first water producing valve is communicated with the inlet of the clean water tank;
the top outlet of the water collecting pipe is communicated with the inlet of the first backwashing water valve, the outlet of the first backwashing water valve is communicated with the inlet of the first membrane backwash water pump, and the outlet of the first membrane backwash water pump is communicated with the inlet of the clean water tank.
Further, the top outlet of the water collecting pipe is communicated with the inlet of a water production regulating valve, and the outlet of the water production regulating valve is communicated with the inlet of a second membrane water production pump; the outlet of the second membrane water production pump is communicated with the inlet of the membrane water production flowmeter; the outlet of the membrane water production flowmeter is communicated with the inlet of the clean water tank;
the top outlet of the water collecting pipe is communicated with the inlet of a second backwashing water valve, the outlet of the second backwashing water valve is communicated with the inlet of a second membrane backwash water pump, and the outlet of the second membrane backwash water pump is communicated with the inlet of a clean water tank.
The liquid level of the clean water tank is more than 1m lower than that of MBRL 1.
The invention also provides a control method of the immersed MBR water production energy-saving device, which comprises the following steps:
step (1), a liquid level meter is arranged on the MBR membrane tank;
step (2), using a water producing valve: in the initial state, the first water producing valve, the second water producing valve, the first backwashing water valve, the first membrane water producing pump and the first membrane backwashing water pump are all in a closed state;
or using a water production regulating valve: in the initial state, the water production regulating valve, the second backwashing water valve, the second membrane water production pump and the second membrane backwashing water pump are all in a closed state;
step (3), when the liquid level in the MBR membrane tank rises above a set liquid level L2, a first water producing valve is started, water is produced by gravity by utilizing the liquid level difference between the MBR membrane tank and the clean water tank, the first water producing valve intermittently operates, and intermittent operation parameters are set according to parameters provided by each membrane manufacturer;
step (4), using a water producing valve: when the liquid level in the MBR membrane pool rises to exceed a set liquid level L3, closing a first water producing valve, sequentially starting a second water producing valve and a first membrane water producing pump, intermittently operating the water producing pump by utilizing vacuumizing, and setting intermittent operation parameters according to parameters provided by membrane manufacturers;
or using a water production regulating valve: when the liquid level in the MBR membrane pool rises to exceed a set liquid level L3, sequentially starting a water production regulating valve and a second membrane water production pump, intermittently operating the water production pump by utilizing vacuumizing, and setting intermittent operation parameters according to parameters provided by each membrane manufacturer;
step (5), when the liquid level in the MBR membrane pool is lower than a set liquid level L1, sequentially closing a first membrane water producing pump and a second water producing valve, stopping water production, and returning to an initial state;
and (6) sequentially repeating the steps (2) to (5).
Further, in the step (1), the MBR membrane tank liquid level gauge is an analog liquid level gauge or a switching value liquid level gauge, and can provide corresponding liquid levels.
Still further, in step (3), the two levels of L1 and L2 of the level gauge may be combined.
Further, in the step (4), a first pressure sensor is arranged on a pipeline between the second water producing valve and the first membrane water producing pump, when the vacuum degree exceeds a set value or the sum of accumulated running time of the second water producing valve exceeds the set value, the second water producing valve is closed, and the reverse first backwashing water valve and the first membrane backwashing water pump are sequentially opened to backwash the membrane; after backwashing is finished, the system enters an initial state, and enters the step (2), the step (3) or the step (4) according to the liquid level of the MBR membrane tank.
Further, in the step (4), the first water producing valve, the second water producing valve and the first backwashing water valve are valves which are electrically or pneumatically switched and feedback signals and are controlled by electric signals.
Further, when the water production regulating valve is used, the water production regulating valve is linked with the membrane water production flow meter, and the opening degree of the water production regulating valve is preferably set to be 50% -75% of the design flow rate in the water production stage of the step (2), and is preferably set to be 90% -105% of the design flow rate in the water production stage of the step (3).
The invention has the beneficial effects that:
due to the arrangement, the invention fully utilizes the natural liquid level difference and reduces the energy consumption of the MBR water producing pump by more than 1/3 to 1/2.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a flow chart of embodiment 1 of the present invention;
FIG. 2 is a flow chart of embodiment 2 of the present invention;
the system comprises a 1MBR membrane tank, a 2 clean water tank, a 101 water collecting pipe, a 102 second water producing valve, a 103 first membrane water producing pump, a 104 first water producing valve, a 105 first backwashing water valve, a 106 liquid level meter, a 107 first membrane backwashing water pump, a 108 first pressure sensor, a 201 water producing regulating valve, a 202 second membrane water producing pump, a 203 membrane water producing flowmeter, a 204 second backwashing water valve, a 205 second membrane backwashing water pump and a 206 pressure sensor.
Detailed Description
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
The method is described in detail below with reference to the attached drawing, but the invention can be implemented in a number of different ways, as defined and covered by the claims.
Example 1
As shown in fig. 1, the immersed type MBR water-producing and energy-saving device is provided with an MBR membrane tank 1 and a clean water tank 2;
a water collecting pipe 101 and a liquid level meter 106 are arranged on the MBR membrane tank 1;
the water collecting pipe 101 is sequentially communicated with the clean water tank 2 through a second water producing valve 102 and a first membrane water producing pump 103;
the water collecting pipe 101 is sequentially communicated with the clean water tank 2 through a first water producing valve 104;
the water collecting pipe 101 is sequentially communicated with the clean water tank 2 through a first backwash water valve 105 and a first membrane backwash water pump 107;
the top outlet of the water collecting pipe 101 is communicated with the inlet of the second water producing valve 102;
the outlet of the second water producing valve 102 is communicated with the inlet of the first membrane water producing pump 103 through a pressure sensor 206;
the top outlet of the water collecting pipe 101 is communicated with the inlet of a first water producing valve 104, and the outlet of the first water producing valve 104 is communicated with the inlet of the clean water tank 2;
the top outlet of the water collecting pipe 101 is communicated with the inlet of a second backwashing water valve 204, the outlet of the second backwashing water valve 204 is communicated with the inlet of a first membrane backwashing water pump 107, and the outlet of the first membrane backwashing water pump 107 is communicated with the inlet of a clean water tank 2.
The control method of the immersed MBR water production energy-saving device comprises the following steps:
step (1), a liquid level meter 106 is arranged on the MBR membrane tank 1;
in the step (2) and the initial state, the first water producing valve 104, the second water producing valve 102, the first backwashing water valve 105, the first membrane water producing pump 103 and the first membrane backwashing water pump 107 are all in the closed state.
Step (3), when the liquid level in the MBR membrane tank 1 rises above a set liquid level L2, a first water producing valve 104 is opened, water is produced by gravity by utilizing the liquid level difference between the MBR membrane tank 1 and the clean water tank 2, the first water producing valve 104 is operated intermittently, and intermittent operation parameters are set according to parameters provided by each membrane manufacturer;
step (4), when the liquid level in the MBR membrane tank 1 rises above a set liquid level L3, closing a first water producing valve 104, sequentially opening a second water producing valve 102 and a first membrane water producing pump 103, intermittently operating the first membrane water producing pump 103 by utilizing vacuumized water, and setting intermittent operation parameters according to parameters provided by membrane manufacturers;
step (5), when the liquid level in the MBR membrane tank 1 is lower than the set liquid level L1, sequentially closing the first membrane water producing pump 103 and the second water producing valve 102, stopping producing water, and returning to an initial state;
step (6), repeating the steps (2) to (5) in sequence;
a first pressure sensor 108 is arranged on a pipeline between the second water producing valve 102 and the first membrane water producing pump 103, when the vacuum degree exceeds a set value or the sum of accumulated running time of the second water producing valve 102 exceeds the set value, the second water producing valve 102 is closed, and the first backwashing water valve 105 and the first membrane backwashing water pump 107 are sequentially opened to backwash the membranes; after the backwashing is finished, the system enters an initial state, and enters the step (2), the step (3) or the step (4) according to the liquid level of the MBR membrane tank 1.
Example 2
As shown in fig. 2, the immersed type MBR water-producing and energy-saving device is provided with an MBR membrane tank 1 and a clean water tank 2;
a water collecting pipe 101 and a liquid level meter 106 are arranged on the MBR membrane tank 1;
the water collecting pipe 101 is sequentially communicated with the clean water tank 2 through a water production regulating valve 201, a second membrane water production pump 202 and a membrane water production flow meter 203; a pressure sensor 206 is arranged on the pipeline between the water production regulating valve 201 and the second membrane water production pump 202;
the water collecting pipe 101 is communicated with the clean water tank 2 through a second backwash water valve 204 and a second membrane backwash water pump 205 in sequence.
The top outlet of the water collecting pipe 101 is communicated with the inlet of the water production regulating valve 201, and the outlet of the water production regulating valve 201 is communicated with the inlet of the second membrane water production pump 202; the outlet of the second membrane water producing pump 202 is communicated with the inlet of the membrane water producing flowmeter 203; the outlet of the membrane water flow meter 203 is communicated with the inlet of the clean water tank 2;
the top outlet of the water collecting pipe 101 is communicated with the inlet of a second backwashing water valve 204, the outlet of the second backwashing water valve 204 is communicated with the inlet of a second membrane backwashing water pump 205, and the outlet of the second membrane backwashing water pump 205 is communicated with the inlet of the clean water tank 2.
The control method of the immersed MBR water production energy-saving device comprises the following steps:
and (3) arranging a liquid level meter 106 on the MBR membrane tank 1.
In the step (2) and the initial state, the water production regulating valve 201, the second backwash water valve 204, the second membrane water production pump 202 and the second membrane backwash water pump 205 are all in the closed state.
Step (3), when the liquid level in the MBR membrane tank 1 rises above a set liquid level L2, opening a water production regulating valve 201, and utilizing the liquid level difference between the MBR membrane tank 1 and the clean water tank 2 to produce water by gravity, wherein the water production regulating valve 201 regulates intermittent operation, and the intermittent operation parameters are set according to parameters provided by each membrane manufacturer;
step (4), when the liquid level in the MBR membrane tank 1 rises above a set liquid level L3, sequentially starting a water production regulating valve 201 and a second membrane water production pump 202, intermittently operating the water production pump by utilizing vacuumizing, and setting intermittent operation parameters according to parameters provided by each membrane manufacturer;
step (5), when the liquid level in the MBR membrane tank 1 is lower than the set liquid level L1, sequentially closing the second membrane water producing pump 202 and the water producing regulating valve 201, stopping water production, and returning to an initial state;
step (6), the water production regulating valve 201 and the membrane water production flow meter 203 are linked, and the opening degree is preferably set to be that the water production flow is regulated to be 50% -75% of the design flow in the water production stage of step 2, and the water production flow is regulated to be 90% -105% of the design flow in the water production stage of step 3.
Step (7), repeating the steps (2) to (6) in sequence;
a second pressure sensor 206 is arranged on a pipeline between the water production regulating valve 201 and the second membrane water production pump 202, when the vacuum degree exceeds a set value or the sum of accumulated running time of the water production valves exceeds the set value, the water production regulating valve 201 is closed, and the second backwashing water valve 204 and the second membrane backwashing water pump 205 are sequentially opened to backwash the membranes. After the backwashing is finished, the system enters an initial state, and the system enters the steps 2, 3 or 4 according to the 1-level MBR membrane tank liquid.
Example 1 employs two water producing valves, example 2 replaces the two water producing valves of example 1 with one water producing regulator valve, and the water producing regulator valve is feedback regulated by a water producing flow meter.
Although the invention does not show the conventional configuration of MBR operation such as aeration flushing, flow metering, medicament backwashing and the like required by the MBR operation, the use of the control strategy is not affected.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (10)

1. An immersed MBR water production energy-saving device is characterized in that an MBR membrane tank (1) and a clean water tank (2) are arranged on the immersed MBR water production energy-saving device;
a water collecting pipe (101) and a liquid level meter (106) are arranged on the MBR membrane tank (1);
the water collecting pipe (101) is sequentially communicated with the clean water tank (2) through a water producing valve or a water producing regulating valve (201) and a first membrane water producing pump (103);
the water collecting pipe (101) is sequentially communicated with the clean water tank (2) through a water producing valve or a water producing regulating valve (201);
the water collecting pipe (101) is sequentially communicated with the clean water tank (2) through a first backwashing water valve (105) and a first membrane backwashing water pump (107);
the water collecting pipe (101) is sequentially communicated with the clean water tank (2) through a second backwashing water valve (204) and a second membrane backwashing water pump (205).
2. The submerged MBR water-producing energy-saving device of claim 1, wherein: the water producing valves are a first water producing valve (104) and a second water producing valve (102);
the water collecting pipe (101) is sequentially communicated with the clean water tank (2) through the second water producing valve (102) and the first membrane water producing pump (103);
the water collecting pipe (101) is sequentially communicated with the clean water tank (2) through a first water producing valve (104);
the water collecting pipe (101) is sequentially communicated with the clean water tank (2) through a water production regulating valve (201), a second membrane water production pump (202) and a membrane water production flowmeter (203); a pressure sensor (206) is arranged on the pipeline between the water production regulating valve (201) and the second membrane water production pump (202).
3. The submerged MBR water-producing energy-saving device of claim 1, wherein: the top outlet of the water collecting pipe (101) is communicated with the inlet of the second water producing valve (102);
the outlet of the second water producing valve (102) is communicated with the inlet of the first membrane water producing pump (103) through a pressure sensor (206);
the top outlet of the water collecting pipe (101) is communicated with the inlet of a first water producing valve (104), and the outlet of the first water producing valve (104) is communicated with the inlet of a clean water tank (2);
the top outlet of the water collecting pipe (101) is communicated with the inlet of a second backwashing water valve (204), the outlet of the second backwashing water valve (204) is communicated with the inlet of a first membrane backwashing water pump (107), and the outlet of the first membrane backwashing water pump (107) is communicated with the inlet of a clean water tank (2).
4. The submerged MBR water-producing energy-saving device of claim 1, wherein: the top outlet of the water collecting pipe (101) is communicated with the inlet of a water production regulating valve (201), and the outlet of the water production regulating valve (201) is communicated with the inlet of a second membrane water production pump (202); the outlet of the second membrane water producing pump (202) is communicated with the inlet of the membrane water producing flow meter (203); the outlet of the membrane water flow meter (203) is communicated with the inlet of the clean water tank (2);
the top outlet of the water collecting pipe (101) is communicated with the inlet of a second backwashing water valve (204), the outlet of the second backwashing water valve (204) is communicated with the inlet of a second membrane backwashing water pump (205), and the outlet of the second membrane backwashing water pump (205) is communicated with the inlet of a clean water tank (2).
5. The control method of the immersed MBR water-producing energy-saving device as claimed in claim 1, which is characterized by comprising the following steps:
the MBR membrane pond (1) is provided with a liquid level meter (106);
step (2), using a water producing valve: in the initial state, the first water producing valve (104), the second water producing valve (102), the first backwashing water valve (105), the first membrane water producing pump (103) and the first membrane backwashing water pump (107) are all in a closed state;
or using a water production regulating valve: in the initial state, the water production regulating valve (201), the second backwashing water valve (204), the second membrane water production pump (202) and the second membrane backwashing water pump 205 are all in a closed state;
step (3), when the liquid level in the MBR membrane tank (1) rises to exceed a set liquid level L2, a first water producing valve (104) is opened, water is produced by gravity according to the liquid level difference between the MBR membrane tank (1) and the clean water tank (2), the first water producing valve (104) intermittently operates, and intermittent operation parameters are set according to parameters provided by each membrane manufacturer;
step (4), using a water producing valve: when the liquid level in the MBR membrane pool (1) rises to exceed a set liquid level L3, closing a first water producing valve (104), sequentially opening a second water producing valve (102) and a first membrane water producing pump (103), intermittently operating the water producing pump by utilizing vacuumizing, and setting intermittent operation parameters according to parameters provided by each membrane manufacturer;
or using a water production regulating valve: when the liquid level in the MBR membrane pool (1) rises to exceed a set liquid level L3, a water production regulating valve (201) and a second membrane water production pump (202) are sequentially started, the water production pump intermittently operates by utilizing vacuumizing, and intermittent operation parameters are set according to parameters provided by membrane manufacturers;
step (5), when the liquid level in the MBR membrane pool (1) is lower than a set liquid level L1, sequentially closing a first membrane water producing pump (103) and a second water producing valve (102), stopping water production, and returning to an initial state;
and (6) sequentially repeating the steps (2) to (5).
6. The control method of the immersed MBR water-producing energy-saving device as claimed in claim 5, wherein: in the step (1), the liquid level meter of the MBR membrane tank (1) is an analog liquid level meter or a switching value liquid level meter.
7. The control method of the immersed MBR water-producing energy-saving device as claimed in claim 6, wherein: in step (3), the two levels L1 and L2 of the level gauge (106) may be combined.
8. The control method of the immersed MBR water-producing energy-saving device as claimed in claim 4, wherein: in the step (4), a first pressure sensor (108) is arranged on a pipeline between the second water producing valve (102) and the first membrane water producing pump (103), when the vacuum degree exceeds a set value or the sum of accumulated running time of the second water producing valve (102) exceeds the set value, the second water producing valve (102) is closed, and a reverse first backwashing water valve (105) and a first membrane backwashing water pump (107) are sequentially opened to backwash the membranes; after the backwashing is finished, the system enters an initial state, and enters the steps 2, 3 or 4 according to the liquid level of the MBR membrane tank (1).
9. The control method of the immersed MBR water-producing energy-saving device as claimed in claim 5, wherein: in the step (4), the first water producing valve (104), the second water producing valve (102) and the first backwashing water valve (105) are valves which are electrically or pneumatically switched feedback signals and are controlled by electric signals.
10. The control method of the immersed MBR water-producing energy-saving device as claimed in claim 5, wherein: when the water production regulating valve (201) is used, the water production regulating valve (201) is linked with the membrane water production flow meter (203), the opening degree is preferably set to be that the water production flow is 50% -75% of the design flow in the water production stage of the step (2), and the water production flow is 90% -105% of the design flow in the step (3).
CN202310279070.4A 2023-03-21 2023-03-21 Immersed MBR water production energy-saving device and control method thereof Pending CN116282507A (en)

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CN202310279070.4A CN116282507A (en) 2023-03-21 2023-03-21 Immersed MBR water production energy-saving device and control method thereof

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Application Number Priority Date Filing Date Title
CN202310279070.4A CN116282507A (en) 2023-03-21 2023-03-21 Immersed MBR water production energy-saving device and control method thereof

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CN116282507A true CN116282507A (en) 2023-06-23

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