CN109626557A - A kind of membrane bioreactor automatically adjusting MLSS concentration - Google Patents
A kind of membrane bioreactor automatically adjusting MLSS concentration Download PDFInfo
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- CN109626557A CN109626557A CN201811557529.8A CN201811557529A CN109626557A CN 109626557 A CN109626557 A CN 109626557A CN 201811557529 A CN201811557529 A CN 201811557529A CN 109626557 A CN109626557 A CN 109626557A
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- sludge
- water inlet
- membrane
- membrane cisterna
- mlss
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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
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- 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)
- Activated Sludge Processes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention provides a kind of membrane bioreactors for automatically adjusting MLSS concentration, including membrane cisterna and water inlet system, the membrane cisterna includes reaction zone and sludge area, the water inlet system includes main water inlet tube, three way flow control valve, water inlet pipe is distinguished in reaction, sludge distinguishes water inlet pipe, controller and MLSS sensor, the MLSS sensor is arranged within the membrane cisterna, the water outlet of the main water inlet tube by the three way flow control valve respectively with it is described react differentiation water inlet pipe water inlet, sludge distinguishes the water inlet connection of water inlet pipe, the water outlet that water inlet pipe is distinguished in the reaction is connect with the reaction zone of the membrane cisterna, the water outlet that the sludge distinguishes water inlet pipe is connect with the sludge area of the membrane cisterna, the controller respectively with the MLSS sensor, three way flow control valve electrical connection.The beneficial effects of the present invention are: keeping MLSS constant concentration in membrane cisterna on the basis of not increasing additional energy consumption.
Description
Technical field
The present invention relates to membrane bioreactor more particularly to a kind of membrane bioreactors for automatically adjusting MLSS concentration.
Background technique
Membrane bioreactor in drinking water and sewage treatment using more and more, it can by biodegradation and
The physical separation effect of film combines, and realizes the control respectively of microorganism residence time and hydraulic detention time.In order to improve
The treatment effeciency of membrane bioreactor, generallys use the method for improving micro organism quantity in reactor, and pollutant is removed in reinforcing
Except effect.MLSS concentration (mixed genetic-neural network, mixed liquid suspended in usual membrane bioreactor
Solids 8000~10000mg/L or so) is maintained.But membrane bioreactor is due to using membrane filtration process, technique collection
Cheng Du is very high, is usually applied to the limited situation in place, biggish conditioning tank can not be arranged.Therefore, water is delayed in film filtering
It rushes that ability is weaker, easily causes the variation of MLSS concentration in reactor.The variation of reactor MLSS concentration will affect effluent quality,
The failure that reactor can even be caused, needs to cultivate microorganism again.In order to maintain microbial activity and stability in reactor,
Generally use the mode for adding filler, provide carrier for microorganism, also have using pulse water flow impact base sludge method come
Control MLSS concentration.
In the prior art, the scheme for controlling MLSS concentration mainly has: 1, public using the sewage disposal system of MBR membrane module
The number of opening CN106957107A is aerated and is stirred in MBR membrane module bottom by the multiple pulse water distribution pipes being located in oxygen compatibility pool
Oxygen compatibility pool base sludge is mixed, realizes the control of MLSS concentration.2, the MBR integrated apparatus of a kind of decelerating membrane pollution, publication number
CN107311394A will be returned by the way that sludge settling area and inclined-pipe settler is arranged in reaction bottom of pond portion after sludge settling
Stream, to control MLSS concentration.3, a kind of composite type energy-saving consumption reduction MBR sewage disposal system, publication number CN106698653A pass through
Increase inclined-plate clarifying basin before membrane cisterna, and with the mode of reflux, controls the MLSS concentration in membrane cisterna.Document disclosed above mainly leads to
Cross the adjusting that the methods of waterpower pulse, sludge reflux realize MLSS concentration.Method except through directly adjusting MLSS concentration, also
There is the concentration for changing microorganism using the method for increasing filler, for example, a kind of membrane bioreaction that research filler improves fouling membrane
Answer device system and quantization test method and application, Authorization Notice No. CN 102642920B, film in a kind of control membrane bioreactor
The new method of pollution, publication number CN 102276055A, a kind of flat ceramic ultrafiltration membrane bioreactor, publication number CN
103304021A is utilized in membrane cisterna and filler is arranged, so that microorganism wadding body is attached to biologic packing material surface, be not only able to increase
Add microbial biomass, moreover it is possible to alleviate fouling membrane.
Based on discussed above, existing method and equipment stirred by waterpower, gas disturbance, sludge reflux and filling carrier change
Microorganism concn in kind membrane cisterna requires to increase additional energy consumption although being able to achieve the adjusting of MLSS concentration.
Therefore, it how on the basis of not increasing additional energy consumption, realizes the adjusting of MLSS concentration, is those skilled in the art
Member's technical problem urgently to be resolved.
Summary of the invention
In order to solve the problems in the prior art, the present invention provides a kind of membrane biological reactions for automatically adjusting MLSS concentration
Device.
The present invention provides a kind of membrane bioreactor for automatically adjusting MLSS concentration, including membrane cisterna and water inlet system, institutes
Stating membrane cisterna includes reaction zone and sludge area, and the water inlet system includes main water inlet tube, three way flow control valve, reaction differentiation water inlet
Pipe, sludge distinguish water inlet pipe, controller and MLSS sensor, and the MLSS sensor is arranged within the membrane cisterna, the master
The water outlet of water inlet pipe reacts the water inlet for distinguishing water inlet pipe, sludge differentiation with described respectively by the three way flow control valve
The water inlet of water inlet pipe connects, and the water outlet that water inlet pipe is distinguished in the reaction is connect with the reaction zone of the membrane cisterna, the sludge
Distinguish water inlet pipe water outlet connect with the sludge area of the membrane cisterna, the controller respectively with the MLSS sensor, threeway
Flow control valve electrical connection, the MLSS sensor is for detecting the MLSS concentration in membrane cisterna and feeding back to the controller, institute
It states controller to be then compared detecting MLSS concentration extremely with setting value, and control three-way flowrate control based on comparative result
Valve, to control the flow that water inlet pipe is distinguished in reaction, sludge distinguishes water inlet pipe.
As a further improvement of the present invention, it is equipped with membrane module in the reaction zone of the membrane cisterna, the membrane module passes through production
Water lines are connected with suction unit, and the MLSS sensor is fixed on the inner wall within the scope of the reaction zone of the membrane cisterna, described
Controller is PLC controller.
As a further improvement of the present invention, aerator is equipped in the reaction zone of the membrane cisterna, the aerator connects
It is connected to gas piping.
As a further improvement of the present invention, the aerator is located at the underface of the membrane module, the membrane module
For ceramic membrane.
As a further improvement of the present invention, the reaction distinguishes water inlet pipe and is connected with coagulant dosage pipe, the coagulation
Agent adds pipe and is connected with coagulant dosage pump.
As a further improvement of the present invention, the reaction zone is located at the top of the membrane cisterna, and the sludge area is located at institute
State the bottom of membrane cisterna.
As a further improvement of the present invention, the bottom of the membrane cisterna is equipped with membrane cisterna partition, and the membrane cisterna partition will be described
Membrane cisterna is separated into the reaction zone, sludge area, and the membrane cisterna partition is net-like spacer.
As a further improvement of the present invention, the sludge partition being obliquely installed is equipped in the sludge area of the membrane cisterna, it is described
Sludge differentiation is divided into IIth area of Ith area of sludge and sludge by sludge partition, and the bottom in IIth area of sludge is connected with mud valve.
As a further improvement of the present invention, the sludge distinguishes water inlet pipe and is connected with perforation water distributor, the perforation cloth
Water pipe is located at the bottom in Ith area of sludge, annular in shape horizontal positioned and contactless with sludge partition.
As a further improvement of the present invention, the top of the perforation water distributor is equipped with multiple water outlets equidistantly distributed
Hole, the sludge partition are arranged in the frustum of a pyramid, and the center of the bottom in Ith area of sludge is provided with rectangular sludge and collects opening.
The beneficial effects of the present invention are: through the above scheme, on the basis of not increasing additional energy consumption, can pass through
MLSS sensor carrys out the MLSS concentration in detecting real-time membrane cisterna, when the MLSS concentration that MLSS sensor obtains is lower than setting value,
Three way flow control valve can be controlled by controller, to increase the flow that sludge distinguishes water inlet pipe, reduce the sedimentation of sludge, protect
Hold MLSS constant concentration in membrane cisterna；On the contrary, if control can be passed through when the MLSS concentration that MLSS sensor obtains is higher than setting value
Device processed controls three way flow control valve, the flow for distinguishing water inlet pipe is reacted to increase, thus to keep MLSS concentration in membrane cisterna
It is constant.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram for the membrane bioreactor for automatically adjusting MLSS concentration of the present invention.
Fig. 2 is the sectional view A-A of Fig. 1.
Specific embodiment
The invention will be further described for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 1 to Figure 2, a kind of membrane bioreactor automatically adjusting MLSS concentration, including membrane cisterna 1 and water inlet system
System, the membrane cisterna 1 include reaction zone 101 and sludge area 102, and the water inlet system includes the threeway of main water inlet tube 2, adjustable flow
Flow control valve 23, reaction distinguish water inlet pipe 21, sludge distinguishes water inlet pipe 22, controller 5 and MLSS sensor 16, the MLSS
Sensor 16 is arranged within the membrane cisterna 1, and the water outlet of the main water inlet tube 2 is distinguished by the three way flow control valve 23
The water inlet of water inlet pipe 21 is distinguished with the reaction, the water inlet of sludge differentiation water inlet pipe 22 is connect, the reaction differentiation water inlet
The water outlet of pipe 21 is connect with the reaction zone 101 of the membrane cisterna 1, and the sludge distinguishes the water outlet and the membrane cisterna of water inlet pipe 22
1 sludge area 102 connects, and the controller 5 is electrically connected with the MLSS sensor 16, three way flow control valve 23 respectively,
MLSS sensor 16, controller 5, three way flow control valve 23, water inlet pipe 21 is distinguished in reaction, sludge is distinguished the composition of water inlet pipe 22 and closed
Ring control system, the MLSS sensor 16 are described for detecting the MLSS concentration in membrane cisterna 1 and feeding back to the controller 5
Detecting MLSS concentration extremely is then compared by controller 5 with setting value, and controls three-way flowrate control based on comparative result
Valve 23, so that the flow that water inlet pipe 21 is distinguished in reaction, sludge distinguishes water inlet pipe 22 is controlled, the final automatic tune for realizing MLSS concentration
Section.
As shown in Figure 1 to Figure 2, reaction distinguish water inlet pipe 21 connect 1 top water inlet of membrane cisterna, sludge distinguish water inlet pipe 22 into
Enter the sludge area 102 of membrane cisterna bottom.
As shown in Figure 1 to Figure 2, membrane module 4 is equipped in the reaction zone 101 of the membrane cisterna 1, the membrane module 4 is by producing water
Pipeline 42 is connected with suction unit 41, and the MLSS sensor 16 is fixed on the inner wall in 101 range of reaction zone of the membrane cisterna 1
On, the controller 5 be preferably PLC controller, suction unit 41 be preferably suction pump, suction pump can simultaneously as produce water pump and
Recoil pump uses.
As shown in Figure 1 to Figure 2, aerator 14 is equipped in the reaction zone 101 of the membrane cisterna 1, the aerator 14 connects
It is connected to gas piping 15, membrane bioreactor can carry out ozone, pure oxygen or ozone/pure oxygen mixed aeration, membrane cisterna 1,4 and of membrane module
Aerator 14 is all made of resistance to ozone oxidation material, such as 316L stainless steel, polytetrafluoroethylene (PTFE), membrane cisterna 1, membrane module 4 and aeration
Device 14 is resistant to ozone oxidation.
As shown in Figure 1 to Figure 2, the aerator 14 is located at the underface of the membrane module 4, and the membrane module 4 is preferably
For ceramic membrane, the membrane module 4 is high-intensitive ceramic membrane, can cope with particulate matter and scrape and current scour, use
Service life is about 15 years.
As shown in Figure 1 to Figure 2, the reaction distinguishes water inlet pipe 21 and is connected with coagulant dosage pipe 31, and the coagulant is thrown
Add pipe 31 to be connected with coagulant dosage and pump 3, reaction is added in coagulant and distinguishes water inlet pipe 21, in reaction differentiation water inlet pipe 21 is managed
Coagulation process is completed in membrane cisterna 1.
As shown in Figure 1 to Figure 2, the reaction zone 101 is located at the top of the membrane cisterna 1, and the sludge area 102 is located at described
The bottom of membrane cisterna 1.
As shown in Figure 1 to Figure 2, the bottom of the membrane cisterna 1 is equipped with membrane cisterna partition 11, and the membrane cisterna partition 11 is by the membrane cisterna
1 is separated into the reaction zone 101, sludge area 102, and the membrane cisterna partition 11 is preferably net-like spacer, and membrane cisterna partition 11 can incite somebody to action
Reaction zone 101 is separated with sludge area 102, while the water inlet that can distinguish water inlet pipe 22 to sludge rectifies, and makes uniform into water
Enter reaction zone 101.
As shown in Figure 1 to Figure 2, the sludge partition 12 being obliquely installed, the dirt are equipped in the sludge area 102 of the membrane cisterna 1
The sludge area 102 is separated into II area 1022 of I area 1021 of sludge and sludge by mud partition 12, and II area 1022 of sludge is located at sludge I
Under area 1021, the bottom in II area 1022 of sludge is connected with mud valve, and the sludge in I area 1021 of sludge can weigh under water jet propulsion
The new reaction zone 101 for entering membrane cisterna 1, water jet propulsion power is from perforation water distributor 24.The sludge in II area 1022 of sludge is residue
Sludge can not reenter membrane cisterna 1, most afterwards through 13 discharge system of mud valve.
As shown in Figure 1 to Figure 2, the sludge distinguishes water inlet pipe 21 and is connected with perforation water distributor 24, the perforation water distributor
24 are located at the bottom in I area 1021 of sludge, annular in shape horizontal positioned and contactless with sludge partition 12.
As shown in Figure 1 to Figure 2, the top of the perforation water distributor 24 is equipped with multiple apopores equidistantly distributed, described
For sludge partition 12 in frustum of a pyramid setting (i.e. section is V-shaped), the center of the bottom in I area 1021 of sludge is provided with rectangular dirt
Mud collects opening.
It is provided by the invention it is a kind of automatically adjust MLSS concentration membrane bioreactor, can by MLSS sensor 16 come
MLSS concentration in detecting real-time membrane cisterna 1 can pass through control when the MLSS concentration that MLSS sensor 16 obtains is lower than setting value
Device 5 controls three way flow control valve 23, to increase the flow that sludge distinguishes water inlet pipe 21, reduces the sedimentation of sludge, keeps film
MLSS constant concentration in pond 1；On the contrary, if control can be passed through when the MLSS concentration that MLSS sensor 16 obtains is higher than setting value
Device 5 processed controls three way flow control valve 23, the flow for distinguishing water inlet pipe 22 is reacted to increase, thus to keep in membrane cisterna 1
MLSS constant concentration.
A kind of membrane bioreactor automatically adjusting MLSS concentration provided by the invention, belongs to water and wastewater treatment field,
It can make the MLSS concentration in membrane bioreactor automatic adjustment reactor, realize the preliminary absorption and biodegrade of pollutant,
Sludge age is controlled, particulate matter, ammonia nitrogen, organic matter and the removal of micropollution in water is realized to stablize, is suitable for potable water
Reason and sewage treatment, also, do not need to increase additional energy consumption.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of membrane bioreactor for automatically adjusting MLSS concentration, it is characterised in that: including membrane cisterna and water inlet system, the film
Pond includes reaction zone and sludge area, the water inlet system include main water inlet tube, three way flow control valve, reaction distinguish water inlet pipe,
Sludge distinguishes water inlet pipe, controller and MLSS sensor, and the MLSS sensor is arranged within the membrane cisterna, the main water inlet
The water outlet of pipe reacts the water inlet for distinguishing water inlet pipe, sludge differentiation water inlet with described respectively by the three way flow control valve
The water inlet of pipe connects, and the water outlet that water inlet pipe is distinguished in the reaction is connect with the reaction zone of the membrane cisterna, and the sludge is distinguished
The water outlet of water inlet pipe is connect with the sludge area of the membrane cisterna, the controller respectively with the MLSS sensor, three-way flowrate
Control valve electrical connection, the MLSS sensor is for detecting the MLSS concentration in membrane cisterna and feeding back to the controller, the control
Detecting MLSS concentration extremely is then compared by device processed with setting value, and controls three way flow control valve based on comparative result,
Water inlet pipe is distinguished to control reaction, the flow that sludge distinguishes water inlet pipe.
2. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 1, it is characterised in that: the membrane cisterna
Membrane module is equipped in reaction zone, the membrane module is connected with suction unit by water producing pipe road, and the MLSS sensor is fixed on
On inner wall within the scope of the reaction zone of the membrane cisterna, the controller is PLC controller.
3. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 2, it is characterised in that: the membrane cisterna
Aerator is equipped in reaction zone, the aerator is connected with gas piping.
4. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 3, it is characterised in that: the aeration dress
Setting in the underface of the membrane module, the membrane module is ceramic membrane.
5. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 1, it is characterised in that: the reaction zone
Water inlet pipe is divided to be connected with coagulant dosage pipe, the coagulant dosage pipe is connected with coagulant dosage pump.
6. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 1, it is characterised in that: the reaction zone
Positioned at the top of the membrane cisterna, the sludge area is located at the bottom of the membrane cisterna.
7. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 6, it is characterised in that: the membrane cisterna
Bottom is equipped with membrane cisterna partition, and the membrane cisterna is separated into the reaction zone, sludge area by the membrane cisterna partition, and the membrane cisterna partition is
Net-like spacer.
8. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 1, it is characterised in that: the membrane cisterna
The sludge partition being obliquely installed is equipped in sludge area, sludge differentiation is divided into Ith area of sludge and sludge II by the sludge partition
The bottom in area, IIth area of sludge is connected with mud valve.
9. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 8, it is characterised in that: the sludge area
Water inlet pipe is divided to be connected with perforation water distributor, the perforation water distributor is located at the bottom in Ith area of sludge, and it is annular in shape horizontal positioned,
And it is contactless with sludge partition.
10. the membrane bioreactor of automatic adjustment MLSS concentration according to claim 9, it is characterised in that: the perforation
The top of water distributor is equipped with multiple apopores equidistantly distributed, and the sludge partition is arranged in the frustum of a pyramid, Ith area of sludge
The center of bottom is provided with rectangular sludge and collects opening.
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| CN201811557529.8A CN109626557B (en) | 2018-12-19 | 2018-12-19 | Membrane bioreactor capable of automatically adjusting MLSS concentration |
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| CN201811557529.8A CN109626557B (en) | 2018-12-19 | 2018-12-19 | Membrane bioreactor capable of automatically adjusting MLSS concentration |
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Cited By (1)
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| CN110550754A (en) * | 2019-09-24 | 2019-12-10 | 浙江联池水务设备股份有限公司 | Membrane method sewage treatment system |
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| CN109626557B (en) | 2023-07-18 |
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