CN213771492U - Automatic backwash MBR sewage treatment device of low energy consumption - Google Patents
Automatic backwash MBR sewage treatment device of low energy consumption Download PDFInfo
- Publication number
- CN213771492U CN213771492U CN202022606220.2U CN202022606220U CN213771492U CN 213771492 U CN213771492 U CN 213771492U CN 202022606220 U CN202022606220 U CN 202022606220U CN 213771492 U CN213771492 U CN 213771492U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- water production
- gas
- backwash
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a low-energy-consumption automatic backwashing MBR sewage treatment device. Comprises a box body, an aeration device, an air supply pipeline, a water production pump and a water production backwashing pipeline. An air stripping return pipeline is arranged in the box body, and replaces a water pump to realize sludge return, so that energy is saved and efficiency is increased; a set of normally open water production solenoid valve is installed on the water production pump pipeline, and a set of backwash pipeline that has the bottom valve has been forked, also installs a set of normally closed backwash solenoid valve on the backwash pipeline, through the PLC program, controls opening/closing of two sets of solenoid valves, and two kinds of function automatic switch-over of normal water production and membrane group backwash can be realized to a sharing water production pump, need not manual operation.
Description
Technical Field
The invention relates to the field of sewage treatment and water resource recycling, in particular to low-energy-consumption automatic backwashing MBR sewage treatment equipment.
Background
In the field of sewage treatment, MBR (Membrane bioreactor) is an abbreviation of Membrane Bio-Reactor in English, and is a novel sewage treatment technology which combines an activated sludge process and a Membrane separation technology and can replace a secondary sedimentation tank in the traditional activated sludge process. In the traditional activated sludge process treatment technology, mud-water separation is completed in a secondary sedimentation tank under the action of gravity, the separation efficiency depends on the sedimentation performance of activated sludge, the sedimentation performance is better, and the mud-water separation efficiency is higher. The settleability of the sludge depends on the operating conditions of the aeration tank, and the operating conditions of the aeration tank must be strictly controlled to improve the settleability of the sludge, so that the application range of the method is limited. Due to the requirement of solid-liquid separation of the secondary sedimentation tank, the sludge in the aeration tank can not maintain higher concentration, generally about 1.5-3.5 g/L, so that the biochemical reaction rate is limited, and the treatment efficiency of equipment is further limited.
In addition, the Hydraulic Retention Time (HRT) and the sludge age (SRT) of the traditional activated sludge treatment technology are mutually dependent, and the contradiction is often formed between the increase of the volume load and the reduction of the sludge load. The system also generates a large amount of excess sludge in the operation process, and the disposal cost of the excess sludge accounts for 25 to 40 percent of the operation cost of sewage treatment. The traditional activated sludge treatment technology is easy to cause sludge bulking phenomenon, so that the effluent contains suspended solids, and the effluent quality is deteriorated.
Aiming at the problems, the MBR process organically combines a membrane separation technology with an activated sludge process, can realize the separation of sludge retention time and hydraulic retention time, greatly improves the solid-liquid separation efficiency, and can maintain high concentration of activated sludge in the aeration tank to be about 8-12 g/L due to the interception effect of the membrane separation technology. Due to the increase of the concentration of the activated sludge in the aeration tank and the appearance of specific bacteria (especially advantageous bacteria) in the sludge, the biochemical reaction rate is improved. Meanwhile, the F/M ratio is reduced, and the generation amount of excess sludge is reduced (even is zero), so that a plurality of outstanding problems existing in the traditional activated sludge method are basically solved.
In practical engineering applications, the inventor of the present invention finds that, while the MBR sewage treatment process has many outstanding advantages, there are also problems, such as:
1. in order to ensure that the MBR membrane has good water flux, the MBR membrane needs to be regularly subjected to chemical dosing and backwashing, and the surface of the membrane is kept clean;
2. in order to maintain higher activated sludge concentration in the biochemical tank and enhance the effect of phosphorus and nitrogen removal, a water pump is generally used for lifting sludge mixed liquid from the membrane tank to the anaerobic tank and gradually reflows, so that the power consumption of the equipment is high, and the failure rate of the equipment is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: the cleaning and maintenance of the MBR membrane group are simplified, and the power consumption of the MBR sewage treatment equipment is reduced.
In order to achieve the purpose, the invention adopts the technical scheme that: provides a low-energy consumption automatic backwashing MBR sewage treatment device.
A low energy consumption automatic backwash MBR sewage treatment device, comprising:
the box, the box both ends are equipped with water inlet and delivery port respectively, and the inside part is equipped with anaerobism pond, oxygen deficiency pond, good oxygen pond, membrane tank, equipment storehouse, clean water basin, and each cell body introduces as follows:
1) the bottom of the anaerobic tank is provided with the gas stirring pipe group, and the anaerobic tank has the advantages that sludge at the bottom is prevented from silting;
2) the bottom of the anoxic tank is also provided with a gas stirring pipe group and a gas stripping reflux pipe group, and the gas stripping reflux has the advantages of replacing water pump reflux and supplementing activated sludge to the anaerobic tank without generating power consumption, which is a great advantage of the invention;
3) the bottom of the aerobic tank is provided with an oxygenation aerator which is used for oxygenating aerobic biochemical reaction in the tank to remove organic pollutants;
4) MBR membrane group is installed to the membrane cisterna, MBR membrane group bottom is equipped with the gas washing nest of tubes, is taken out by the self priming pump through the filterable clear water of membrane group, and the organic matter and the activated sludge who are intercepted stay to carry out biochemical reaction in the pond, guarantee that the activated sludge concentration in the pond maintains at higher level, reinforces the treatment effeciency. The membrane tank is also provided with an air stripping reflux pipe group, so that dissolved oxygen mixed liquor is refluxed to the anoxic tank without power consumption to carry out denitrification reaction;
5) facilities such as a water production pump, a pipeline, a valve, an air pump, a dosing device and an electric control device are installed in the equipment bin, so that the sewage treatment equipment is ensured to have good factory prefabrication and integrity, an independent equipment room is not required to be arranged on the equipment installation site, the occupied area and the equipment cost are saved, and good social and economic benefits are achieved;
6) the clean water tank is arranged at the bottom of the equipment bin and is divided by the bottom plate to form the camera bellows, so that the space utilization rate is high, the water producing pipe group is very conveniently connected with the clean water tank, backwashing and water taking are also very convenient, the space layout of the equipment bin is regular and compact, the appearance of the box body is not influenced, and the structural design of the camera bellows of the clean water tank is another advantage of the invention.
The aeration device, aeration device's air supply line is terminal, installs gas stirring nest of tubes, oxygenates aerator, gas stripping return line, gas washing nest of tubes, provides the air supply for them, gas stripping solenoid valve, stirring solenoid valve, stop valve, gas flowmeter are installed to the air supply line middle section, and their structure function introduces as follows: the gas-lifting electromagnetic valve is kept normally open, is arranged on the gas supply pipeline of the gas-lifting pipe group, controls gas supply to carry out gas-lifting reflux lifting, and the stirring electromagnetic valve is kept normally closed, is arranged on the gas supply pipeline of the gas-stirring pipe group, is opened when gas is required to be supplied for stirring, and works in a mutual-inverse linkage manner with the gas-lifting electromagnetic valve; the shutoff valves are mounted on each branch pipe to control the flow of gas, followed by a gas flow meter to monitor the flow of gas in the corresponding pipe.
The water production pump is connected with a water outlet of the MBR membrane group through a water production pipeline, a pressure gauge and a vacuum gauge are installed on a pipeline on the water inlet side of the water production pump, and the positive pressure and the negative pressure of the pipeline are monitored; a flowmeter is arranged on a pipeline on the water outlet side of the produced water pump to measure the flow of the produced water; install a set of normally open product water solenoid valve on the product water pump business turn over water pipeline, still bifurcated a set of backwash pipeline that has the bottom valve on the product water pump business turn over water pipeline, install the backwash solenoid valve of a set of normally closed on the backwash pipeline, through the PLC program, control opening/closing of two sets of solenoid valves, a sharing product water pump can realize normally producing two kinds of function automatic switch-overs of water and membrane group backwash, need not to set up independent backwash system, also need not manual operation, save equipment and operation cost promptly and save the power consumption again. The design of automatic switching for water production and backwashing is also a great advantage of the invention.
The chemical adding device is connected to the water inlet side of the water production pump through a chemical conveying pipe and conveys chemical liquid for disinfection and backwashing to the water production pipeline through the chemical pump.
In summary, the invention has the following advantages:
1. the technical scheme of air stripping is used for solving the problem of sludge backflow lifting, and the traditional water pump lifting is replaced, so that the electricity is saved, and the equipment faults are reduced;
2. the unique structural design of the dark box of the clean water tank ensures that the equipment layout is compact and the occupied space is saved;
3. through PLC program control solenoid valve automatic switch-over, realize the automatic backwash function of MBR membrane group, solve traditional manual operation backwash, make equipment maintenance management and maintenance more simple and convenient.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Description of reference numerals: 1. the device comprises a box body, a water inlet, a water outlet, an anaerobic tank, an anoxic tank, a aerobic tank, a membrane tank, a device bin, a clean water tank, a water outlet, an aeration device, a dosing pump, a dosing device, a water production pump, an MBR membrane group, a stirring electromagnetic valve, a gas stripping electromagnetic valve, a shutoff valve, a water production electromagnetic valve, a backwashing electromagnetic valve, a gas supply pipeline, a gas stripping return pipeline, a gas production pipeline, a backwashing pipeline, a bottom valve, a gas washing pipe group, a gas aeration device, an oxygen aeration device, a gas stirring pipe group and a drug delivery pipe, wherein the box body is 2, the water inlet is 3, the anaerobic tank, the anoxic tank is 4, the aerobic tank is 5, the membrane tank is 6, the device bin is 7, the equipment bin is 8, the clean water tank, the water outlet is 9, the aeration device is 10, the dosing pump is 11, the dosing pump, the MBR membrane group is 14, the MBR membrane group is 15, the gas stirring electromagnetic valve is 15, the gas stripping electromagnetic valve is 16, the gas stripping electromagnetic valve is 17, the electromagnetic valve is 18, the water production electromagnetic valve, the 19, the back washing electromagnetic valve is 19, the gas electromagnetic valve is 19, the vacuum meter, the gas reflux pipeline, the gas is 20, the gas reflux pipeline, the gas is used for gas reflux pipeline, the gas is used for 25, the gas reflux pipeline, the oxygen supply pipeline is used for oxygen supply pipeline, and the oxygen supply pipeline, the oxygen supply pipeline is used for oxygen supply pipeline, the oxygen supply pipeline is used for oxygen supply pipeline, the oxygen supply pipeline is used for oxygen supply pipeline, the oxygen supply pipeline is used for oxygen supply aerator is used for oxygen supply pipeline, the oxygen supply pipeline is used for oxygen supply aerator is used for oxygen supply pipeline, the oxygen supply pipeline, and the oxygen supply pipeline, the oxygen supply pipeline is used for oxygen supply pipeline, the.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting the present patent, and any modifications, equivalents, improvements, etc., which are within the spirit and principle of the present invention, should be included in the scope of the claims of the present invention.
Detailed Description
As shown in fig. 1, a low energy consumption automatic backwash MBR sewage treatment apparatus includes:
the box 1, 1 both ends of box are equipped with water inlet 2 and delivery port 9 respectively, and the inside part is equipped with anaerobism pond 3, oxygen deficiency pond 4, good oxygen pond 5, membrane tank 6, equipment storehouse 7, clean water basin 8, and each cell body function and structure are introduced as follows:
1) the bottom of the anaerobic tank 3 is provided with the gas stirring pipe group 30, which has the advantage of preventing sludge at the bottom from silting up;
2) the bottom of the anoxic tank 4 is also provided with a gas stirring pipe group 30 and a gas stripping reflux pipe group 24, and the gas stripping reflux has the advantages of replacing water pump reflux and supplementing activated sludge to the anaerobic tank without generating power consumption, which is a great advantage of the invention;
3) the bottom of the aerobic tank 5 is provided with an oxygenation aerator 29 which is used for providing dissolved oxygen for aerobic biochemical treatment of the water body in the tank and removing organic pollutants;
4) the membrane tank 6 is provided with an MBR membrane group 14, the bottom of the MBR membrane group 14 is provided with an air washing tube group 28, clear water filtered by the membrane group is pumped out by a self-sucking pump 13, and intercepted organic matters and activated sludge are left in the tank for biochemical reaction, so that the concentration of the activated sludge in the tank is maintained at a higher level, and the treatment efficiency is enhanced. The membrane tank 6 is also provided with an air stripping reflux pipe group 24, so that dissolved oxygen mixed liquor can be refluxed to the anoxic tank 4 without power consumption for denitrification reaction;
5) facilities such as a water production pump, a pipeline, a valve, an air pump, a dosing device and an electric control device are arranged in the equipment bin 7, so that the sewage treatment equipment has good factory prefabrication and integrity, an independent equipment room is not required to be arranged on the equipment installation site, the occupied area is saved, the equipment cost is saved, and good social and economic benefits are achieved;
6) the clean water tank 8 is arranged at the bottom of the equipment bin 7 and is divided by the bottom plate to form a camera bellows, so that the space utilization rate is very good, the water production pipeline 25 is very conveniently connected with the clean water tank, the water intake of the backwashing pipeline 26 is also very convenient, the space layout of the equipment bin is regular and compact, the appearance of the box body is not influenced, and the structural design of the camera bellows of the clean water tank is another advantage of the invention.
The aeration device 10 is provided with an air stirring pipe group 30, an oxygenation aerator 29, an air stripping pipe group 24 and an air washing pipe group 28 at the tail end of an air supply pipeline 23 of the aeration device 10, and air sources are provided for the aeration device 10; the middle section of the air supply pipeline 23 is provided with a gas stripping electromagnetic valve 16, a stirring electromagnetic valve 15, a shutoff valve 17 and a gas flowmeter 22, and the structural functions of the gas stripping electromagnetic valve, the stirring electromagnetic valve 15, the shutoff valve 17 and the gas flowmeter are introduced as follows: the gas-lifting electromagnetic valve 16 is kept normally open, is arranged on the air supply pipeline of the gas-lifting pipe group 24, controls air supply to carry out gas-lifting reflux lifting, and the stirring electromagnetic valve 15 is kept normally closed, is arranged on the air supply pipeline of the gas stirring pipe group 30, is opened when air supply is required to be stirred, and is in reciprocal linkage with the gas-lifting electromagnetic valve 16; a shut-off valve 17 is installed at each branch pipe to control the flow rate of gas, followed by a gas flow meter 22 to monitor the flow rate of gas in the corresponding pipe.
The water production pump 13 is connected with the water outlet of the MBR membrane group 14 through a water production pipeline 25; a vacuum meter 20 and a pressure meter 21 are arranged on a pipeline at the water inlet side of the water production pump 13, and positive pressure and negative pressure of the pipeline are monitored; a flow meter 32 is arranged on a pipeline at the water outlet side of the water production pump 13 to measure the flow rate of produced water; install a set of normally open product water solenoid valve 18 on product water pump 13 business turn over water pipeline, still bifurcated a set of backwash pipeline 26 that has bottom valve 27 on product water pump 13 business turn over water pipeline, install a set of normally closed backwash solenoid valve 19 on backwash pipeline 26, through the PLC program, control opening and close of two sets of solenoid valves, a sharing product water pump can realize normally producing two kinds of functions automatic switch-over of water and membrane group backwash, need not to set up independent backwash system, also need not manual operation, save equipment and operation cost promptly and save the power consumption again. The design of automatic switching for water production and backwashing is also a great advantage of the invention.
The chemical adding device 12 is connected to the water inlet side of the water production pump 13 through a chemical conveying pipe 31, and chemical liquid for disinfection and backwashing is conveyed to a water production pipeline through the chemical conveying pump 11.
The foregoing is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, and it will be apparent to those skilled in the art that various modifications and technical extensions can be made without departing from the principle of the present invention, and such modifications and technical extensions should be considered as the scope of the present invention.
Advantageous effects
After the invention is adopted, the biggest advantage is that the air stripping is used as power to replace a water pump in the anoxic tank and the MBR membrane tank, the sludge backflow can be realized without power consumption, and the energy conservation and the efficiency improvement are realized; through electrical system, control product water solenoid valve and backwash solenoid valve switch, realize the automatic backwashing of MBR membrane group, replace manual operation, the fortune dimension is simple and convenient. The MBR sewage treatment equipment after the application of the technology has very good social and economic benefits.
Claims (1)
1. The utility model provides an automatic backwash MBR sewage treatment device of low energy consumption which characterized in that includes:
the tail end of an air supply pipeline (23) of the aeration device (10) is provided with an air stirring pipe group (30), an oxygenation aerator (29), an air stripping pipe group (24) and an air washing pipe group (28); the middle section of the air supply pipeline (23) is provided with a gas stripping electromagnetic valve (16), a stirring electromagnetic valve (15), a shutoff valve (17) and a gas flowmeter (22), the gas stripping electromagnetic valve (16) is kept normally open and is installed on the air supply pipeline of the gas stripping pipe group (24), the stirring electromagnetic valve (15) is kept normally closed and is installed on the air supply pipeline of the gas stirring pipe group (30) and is in reciprocal linkage work with the gas stripping electromagnetic valve (16), the shutoff valve (17) is installed on each branch pipe to control air flow, and the gas flowmeter (22) is installed behind the shutoff valve;
produce water pump (13), produce water pump (13) and be connected with MBR membrane group (14) delivery port through water production pipeline (25), install vacuum gauge (20) and manometer (21) on the pipeline of water production pump (13) side of intaking, install flowmeter (32) on the pipeline of water production pump (13) side of intaking, install a set of normally open product water solenoid valve (18) on water production pump (13) business turn over pipeline, still forked a set of backwash pipeline (26) that have bottom valve (27) on water production pump (13) business turn over pipeline, install a set of normally closed backwash solenoid valve (19) on backwash pipeline (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022606220.2U CN213771492U (en) | 2020-11-12 | 2020-11-12 | Automatic backwash MBR sewage treatment device of low energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022606220.2U CN213771492U (en) | 2020-11-12 | 2020-11-12 | Automatic backwash MBR sewage treatment device of low energy consumption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213771492U true CN213771492U (en) | 2021-07-23 |
Family
ID=76915321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022606220.2U Active CN213771492U (en) | 2020-11-12 | 2020-11-12 | Automatic backwash MBR sewage treatment device of low energy consumption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213771492U (en) |
-
2020
- 2020-11-12 CN CN202022606220.2U patent/CN213771492U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240002267A1 (en) | Chemical sewage treatment and reuse system | |
| CN104118971A (en) | Method for strengthening nitrogen and phosphorus removal by using hydrolysis and fermentation of mixed sludge of sewage plant | |
| CN108249691B (en) | Integrated low-energy-consumption distributed village and town domestic sewage treatment system | |
| CN213771492U (en) | Automatic backwash MBR sewage treatment device of low energy consumption | |
| CN111439892A (en) | Domestic sewage treatment device and method with integrated membrane bioreactor | |
| CN102531160B (en) | Reclaimed water recycling device for sequencing batch membrane bioreactor (SBMBR) | |
| CN113003864B (en) | Improved sewage treatment device and method by nitrogen and phosphorus removal biomembrane method | |
| CN212222745U (en) | Domestic sewage treatment device with integrated membrane bioreactor | |
| CN209322663U (en) | A kind of wastewater treatment integrated apparatus | |
| CN108439579B (en) | Environmental protection system for improving wastewater treatment capacity | |
| CN203999267U (en) | A kind of regeneration effluent is processed integrated apparatus | |
| CN219860938U (en) | Industrial sewage MBR membrane reaction device | |
| CN212687797U (en) | Advanced oxidation sewage treatment device | |
| CN221027927U (en) | Automatic drainage device of SBR reaction tank | |
| CN216687842U (en) | Integrated device for deep total nitrogen removal treatment of high ammonia nitrogen sewage | |
| CN215439838U (en) | Process system suitable for distributed sewage treatment and reclaimed water reuse | |
| CN216106529U (en) | Integration MBR domestic sewage treatment equipment | |
| CN212403640U (en) | Improved anaerobic sewage treatment device | |
| CN214060062U (en) | Energy-saving consumption-reducing sewage nitrogen and phosphorus removal system | |
| CN211004994U (en) | Small-size high concentration organic waste water integration sewage treatment plant | |
| CN219929829U (en) | Container type sewage denitrification and dephosphorization advanced treatment device | |
| CN202415325U (en) | Synthetic rubber sewage treatment device | |
| CN216918744U (en) | Water pool with hydraulic stirring mixing adjustment function by means of water outlet pump | |
| CN220432559U (en) | Sewage treatment integrated equipment | |
| CN218146280U (en) | Low-power-consumption facility suitable for treating rural domestic sewage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |