CN205556396U - Energy -conserving MBR sewage treatment system - Google Patents
Energy -conserving MBR sewage treatment system Download PDFInfo
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- CN205556396U CN205556396U CN201620262233.3U CN201620262233U CN205556396U CN 205556396 U CN205556396 U CN 205556396U CN 201620262233 U CN201620262233 U CN 201620262233U CN 205556396 U CN205556396 U CN 205556396U
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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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Abstract
The utility model discloses an energy -conserving MBR sewage treatment system, equalizing basin, pretreatment pond, the built -in MBR who has membrane bioreactor including communicateing in proper order handle the pond, and pretreatment pond and MBR are equipped with aeration equipment in handling the pond, and this aeration equipment matches there is the air -blower, be equipped with a level sensor in the equalizing basin and be used for the first water pump to pretreatment pond transfer sewage, be equipped with the 2nd level sensor in the pretreatment pond and be used for handling the second water pump that shifts sewage in the pond to MBR, MBR is equipped with the 3rd level sensor in handling the pond, and the delivery port that MBR handled the pond has connect the third water pump, still be equipped with be used for receiving each level sensor signal and logic circuit in order to export corresponding control signal is compared with the threshold value, air -blower and each water pump connect the converter that is used for the regulatory work rate respectively, and each converter access is controlled by logic circuit.
Description
Technical field
This utility model relates to sewage treatment area, particularly relates to a kind of energy-conservation MBR sewage disposal
System.
Background technology
Membrane bioreactor (MBR) technology is a kind of embrane method sewage disposal technology, MBR technology in recent years
Obtain increasingly being widely applied, but its energy consumption or of a relatively high, and later maintenance manages also
Being the biggest problem, this limits its application to a certain extent.
The Chinese patent literature of Publication No. CN104609678A discloses a kind of Intelligent sewage and processes system
System, arranges the pressure transmitter being connected with automatic control system, this automatic control system on water producing pipe
Can automatically control under the effect of pressure transmitter or according to the operation time of Intelligent sewage processing system
Water intaking valve processed, product water valve, backwash valve, mud valve, blow down valve and the switch of dosing valve, to reach
Automatically control MBR response system on-line cleaning in situ and the purpose of off-line cleaning in situ.This technical side
Case is detected the duty of sewage disposal system by pressure transmitter, it is achieved that sewage disposal system
The electronic monitoring of system duty, but sewage disposal system duty is complicated, only by pressure
Index controls production process and is extremely difficult to adjust accurately.
It is dirty that the Chinese patent literature of Publication No. CN104843945A discloses Novel low-consumption MBR
Water outfit and tele-control system are mainly by Novel low-consumption MBR sewage outfit and remotely
Control system two parts form, and sewage enters and sequentially passes through fine fack, steady after MBR sewage outfit
Determine pond, regulating reservoir, elevator pump, fully automatic cleaning filter, integrated A 2/O-MBR reaction tank,
Suction pump, ultraviolet sterilizer, middle pond.This technical scheme adds monitoring dirt by networking control
The index of water treatment system duty, and improve sewage treatment capacity reduce by optimizing layout
Engineering energy consumption, but the energy consumption for equipment itself is not optimized, and also has the space promoted.
The Chinese patent literature of Publication No. CN204417282U discloses a kind of sewage disposal device,
Including regulating reservoir, decontaminating apparatus, MBR integration apparatus and switch board, wherein MBR integration
Equipment includes anoxic pond and MBR membrane cisterna, MBR membrane cisterna include membrane bioreactor, go out water pump,
Blower fan, tank level control system and purging system.
For present stage, (as open in the most of MBR sewage disposal system come into operation at present
Number CN104609678A, publication number CN104843945A, publication number CN204417282U etc.) institute
Mostly the blower fan used and water pump are according to demand design when operating at full capacity, and in daily use
Scarcely need to operate at full capacity, cause the bigger surplus of the long-term existence such as blower fan and water pump, not only make
Pump efficiency is low and causes mass energy to waste.And in MBR sewage disposal system, use frequency conversion wind
Machine and water pump can uniformly change operating frequency, according to the actual requirements regulation water pump ability, can be effective
Reduce energy resource consumption.It addition, use frequency control can not only realize the soft start of blower fan and water pump,
Soft stop when can also complete termination of pumping is stopped, and can substantially eliminate water hammering；And come by frequency control
Regulation flow can avoid the frequent start-stop of water pump.Therefore in MBR sewage disposal system, use frequency conversion
Technology can effectively reduce the energy consumption of blower fan water pump, reduces fault rate, extends the use longevity of whole system
Life, reduces maintenance cost, but also can reduce the loss of power system reactive power.
It is dirty that the Chinese patent literature of Publication No. CN204270111U discloses a kind of S-MBR integration
Water treatment facilities automatic control system, this control system includes: PLC, host computer, change
Frequently device, wastewater parameters measure system, electrical ball valve, equipment state measurement system.This control system is led to
Cross described wastewater parameters measurement system and wastewater parameters is fed back to described PLC, and and PL
The control parameter set in C controller compares and logical operations, and PLC sends control
Signal, drives described converter to go to control the work of S-MBR relevant device, the simultaneously electricity described in control
Dynamic ball valve opens or closes.This technical scheme realizes controlling by the duty controlling water pump and blower fan
The exposure of air and sewage and the technical purpose of the time of staying.
But blower fan and pump energy saving performance also have room for promotion, as the sewage stream of control strategy foundation
Amount parameter can not the most comprehensively show the duty of sewage disposal system.The most existing
MBR sewage disposal system, in the control moving material water pump and Aeration fan, is to gather flow letter mostly
Number carry out VFC, but wastewater composition is complicated, especially when carrying fixture in sewage secretly, flow
Detecting element there may be signal errors, and additionally during drainage flow, flow is not the most stable, to frequency conversion control
Signal intensity processed is the most frequently likely to the hidden danger caused on equipment.
Utility model content
The deficiency existed for prior art, this utility model provides a kind of based on sewage disposal system
In each reaction tank liquid level data control system power consumption to reach the energy-conservation MBR sewage disposal of energy-conservation purpose
System.
The technical solution of the utility model is:
A kind of energy-conservation MBR sewage disposal system, including the regulating reservoir being sequentially communicated, pre-treatment pond with
And the MBR being built-in with membrane bioreactor processes pond, wherein:
Pre-treatment pond and MBR are provided with aerator in processing pond, and this aerator coupling has aerator；
The first liquid level sensor it is provided with and for the first of pre-treatment pond transalkylation effluent in regulating reservoir
Water pump；
The second liquid level sensor it is provided with and for processing pond transalkylation effluent to MBR in pre-treatment pond
Second water pump；
MBR is provided with the 3rd liquid level sensor in processing pond, MBR processes the outlet in pond and is connected to the 3rd
Water pump；
It is additionally provided with for that receive each liquid level sensor signal and control so that output is corresponding compared with threshold value
The logic circuit of signal, described aerator and each water pump are connected to the frequency conversion for regulating power respectively
Device, each converter accesses and is controlled by described logic circuit.
In more existing sewage disposal systems, the blower fan of aeration and transalkylation effluent between each pond
Water pump be mostly, according to demand design when operating at full capacity, and daily use scarcely to need
Operate at full capacity, cause the bigger surplus of the long-term existence such as blower fan and water pump, not only make pump efficiency low
Descend and cause mass energy to waste.Therefore this utility model MBR sewage disposal system uses frequency conversion
Device drives blower fan and water pump can uniformly change operating frequency, regulates power according to the actual requirements, it is possible to
Effectively reduce energy resource consumption.
The more important thing is, the control signal of each converter is from pond corresponding to blower fan and water pump
Liquid level sensor, is i.e. changed by detection liquid level and then adjusts blower fan and pump power.
Energy-conservation MBR sewage disposal system controls energy consumption by the sewage load in system.Wherein
Sewage level in first liquid level sensor monitoring regulating reservoir, logic circuit is based on the first liquid level sensor
Signal frequency conversion controls the first water pump；Sewage level in second liquid level sensor monitoring pre-treatment pond, logic
Circuit signal frequency conversion based on the second liquid level sensor controls the second water pump and aerator；3rd liquid level passes
Sensor monitoring MBR processes sewage level in pond, logic circuit signal based on the 3rd liquid level sensor
VFC the 3rd water pump and aerator.
When the work generation environment of MBR sewage disposal system changes, such as when entering dry season,
Sewage quantity reduces, and the sewage quantity flowing into regulating reservoir diminishes, and regulating reservoir sewage is because declining, the first liquid level
The signal of sensor change to logic circuit judge less than threshold value time, logic circuit change output electricity
Equal change converter mode of operation thus adjust the first pump power；First pump power reduces, and enters
The sewage quantity in pre-treatment pond reduces the signal intensity causing the second liquid level sensor, and logic circuit is in like manner adjusted
Whole second pump power；Second pump power reduces, and the sewage quantity reduction entering MBR process pond is led
Causing the signal intensity of the 3rd liquid level sensor, logic circuit in like manner adjusts the 3rd pump power；Thus it is real
The decline of existing MBR sewage disposal system overall power.When the water yield becomes big, MBR sewage disposal system
System also can adjust increase sewage treatment capacity the most automatically.This design is advantageous in that can be according to system
Interior sewage quantity accuracy-control system power consumption, reaches energy-conservation purpose.
As preferably, described regulating reservoir flows to be divided into regulatory region and settling zone along sewage；Described pre-treatment
Pond flows to be divided into anoxic pond and Aerobic Pond along sewage；Aerator in pre-treatment pond is positioned at Aerobic Pond
In；Described first water pump and the second water pump are the diving being respectively implanted described settling zone and Aerobic Pond
Pump.
Regulating reservoir comprises regulatory region and settling zone, owing to water quality and the water yield of sewage have inhomogeneities,
Regulatory region primarily serves homogenizing water quality, regulation the waste water water yield, the effect of anti-load impact, it is ensured that enter
The waste water quality water yield of aftertreatment systems is uniform and stable, the activated sludge in settling zone sewage with pond
Mixing carries out preliminary reaction and separation.First water pump be arranged on settling zone be advantageous in that can give dirt
Water provides power through regulating reservoir and ensures that the sewage flowing into pre-treatment pond passes through regulating reservoir
Fully process.Pre-treatment pond includes anoxic pond and Aerobic Pond, is respectively completed in anoxic pond and Aerobic Pond and removes
Phosphorus and the operation denitrogenated, in Aerobic Pond, sewage through sufficient aeration and fully connects with activated sludge
Touching, it is harmless inorganic matter that the microorganism in activated sludge converts the Organic substance of a part.Second water pump
It is arranged on Aerobic Pond to be advantageous in that and through pre-treatment pond offer power and stream can be ensured to sewage
The sewage entering MBR process pond passes through the abundant process in pre-treatment pond.
Described aerator has two, processes the aerator phase in pond with pre-treatment pond and MBR respectively
Even；Or described aerator has one, described pre-treatment pond and MBR process the aerator in pond and lead to
The wind path crossing parallel connection is connected with this aerator.
As preferably.Aerator has two, processes the aeration in pond with pre-treatment pond and MBR respectively
Device is connected and is advantageous in that and can process working conditions different in pond for pre-treatment pond and MBR
Adjust aeration rate, higher control accuracy can be reached compared to the design of single aerator, compared to valve
Door can reach more preferable energy-saving effect.
In order to realize the control to converter, use logic circuit that liquid level signal is judged, logic
Circuit can by existing comparison circuit or combine logical judgment realize, it would however also be possible to employ software programming
It is integrated in etc. mode in the similar circuit elements such as chip.
As a kind of scheme, described logic circuit includes that multiple-group analysis device, each group of comparator are respectively provided with:
The input connected with corresponding liquid level sensor；
For inputting the reference edge of threshold value；
The outfan being connected with corresponding converter.
During use, after the signal of liquid level sensor is compared with threshold value, i.e. can determine whether the height of liquid level, enter
And by converter regulation blower fan or the power of water pump.
May be used without slightly complicated mode, the most described reference edge is two, two thresholds of the most corresponding height
Value.
Each group of comparator can have multiple comparator and combine and door, OR circuit, liquid level is entered
Row stepping judges, in the case of having two threshold values, liquid level is divided into high, medium and low three kinds of situations.
As preferably, described logic circuit is integrated to PLC, described MBR sewage disposal system
System is additionally provided with the touch screen being connected to carry out signal input and output with described PLC.
For realizing the succinct of system, the function of logic circuit is integrated in PLC, passes through PL
C controller realizes the control of multiple water pump and blower fan, the setting of systematic parameter and believing based on sensor
Number logical operations compared.Controlling for convenience, PLC needs to monitor and input equipment, touches
Touch screen and be integrated with the function of input and output, it is possible to optimize system layout.
As preferably, energy-conservation MBR sewage disposal system is additionally provided with:
Long-distance control cabinet, described PLC, touch screen and each aerator and water pump and control
Switch is installed in this long-distance control cabinet；
Power cabinet, the converter of described aerator and each water pump is arranged in this power cabinet；
Host computer, is connected with described PLC.
Energy-conservation MBR sewage disposal system needs to arrange according to different operating modes, and such as sewage load is big
In the case of will select more powerful water pump and aerator, therefore converter also will be according to water pump and drum
The power of blower fan selects, the manufacture of the most energy-conservation MBR sewage disposal system and assembling, weak
Electricity separates with forceful electric power, and PLC, touch screen and each aerator and water pump and control switch are installed
In long-distance control cabinet, converter is arranged in power cabinet, the PLC in host computer and long-distance control cabinet
Controller is connected.This design is advantageous in that while avoiding strong and weak electricity interference and facilitates system
Configuration.Which kind of manufacturing and in production process, no matter being applicable to the energy-conservation MBR sewage disposal system of operating mode
The long-distance control cabinet of system can select identical specification, it is only necessary to the converter rule in motivation of adjustment cabinet
Lattice can be realized as adaptation, simplifies manufacture and assembling process.
This utility model has the advantage that
(1) independent control design case, manufacturing parameter adjusts accurately, good sewage processing effect；
(2) level sensing Frequency Conversion Design, decreases the energy consumption of sewage disposal itself, energy-conserving and environment-protective；
(3) long-range control design case, being advantageously integrated remotely management, working stability.
Accompanying drawing explanation
Fig. 1 is the present embodiment energy-conservation MBR sewage disposal system schematic diagram；
Fig. 2 is the equipment schematic diagram of energy-conservation MBR sewage disposal system in Fig. 1；
Fig. 3 is the switching circuit schematic diagram in Fig. 1 in energy-conservation MBR sewage disposal system；
Fig. 4 is the automatic control module schematic diagram of energy-conservation MBR sewage disposal system in Fig. 1；
Fig. 5 is the energy-saving principle schematic diagram of energy-conservation MBR sewage disposal system in Fig. 1.
Detailed description of the invention
Explanation this utility model detailed description of the invention below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2,
A kind of energy-conservation MBR sewage disposal system, including the grid canal 1 being sequentially communicated, regulating reservoir 2,
Pre-treatment pond 3, the MBR process pond 4 being built-in with membrane bioreactor and cleaning drug slot 14, its
In:
Pre-treatment pond 3 and MBR is provided with aerator in processing pond 4, and this aerator shares one
Aerator 10；
The first liquid level sensor 11 it is provided with and for pre-treatment pond transalkylation effluent in regulating reservoir 2
First water pump 5；
It is provided with the second liquid level sensor 12 in pre-treatment pond 3 and shifts for processing pond 4 to MBR
Second water pump 6 of sewage；
MBR is provided with the 3rd liquid level sensor 13 in processing pond 4, MBR processes the outlet in pond 4 and connects
There is the 3rd water pump 7 and for the 4th water pump 8 cleaning membrane bioreactor that recoils；
It is additionally provided with for that receive each liquid level sensor signal and control so that output is corresponding compared with threshold value
The logic circuit of signal, described aerator and each water pump are connected to the frequency conversion for regulating power respectively
Device, each converter accesses and is controlled by logic circuit.
Regulating reservoir 2 flows to be divided into regulatory region 21 and settling zone 22 along sewage；Pre-treatment pond 3 is along sewage
The flow direction is divided into anoxic pond 31 and Aerobic Pond 32；Aerator in pre-treatment pond 3 is positioned at Aerobic Pond 32
In, described first water pump 5 and the second water pump 6 are to be respectively implanted settling zone 22 and Aerobic Pond 32
Immersible pump.
Logic circuit is integrated to PLC, and MBR sewage disposal system is additionally provided with and PLC control
Device connects in order to the touch screen carrying out signal input and output.
Energy-conservation MBR sewage disposal system is additionally provided with:
Remote power cabinet, PLC, touch screen and each aerator and water pump and control switch are all
It is arranged in this remote power cabinet；
Power cabinet, the converter of aerator 10 and each water pump is arranged in this power cabinet；
Host computer, is connected with PLC.
Logic circuit includes multiple-group analysis device, each group of corresponding liquid level sensor and of comparator
Individual converter.
When often organizing comparator only one of which threshold value (reference value), can determine that the height of liquid level.
As another embodiment, pond 4 is processed for regulating reservoir 2, pre-treatment pond 3 and MBR
Liquid level be respectively designed with " high ", " in ", " low " three corresponding threshold values, PLC
Can record for first liquid level sensor the 11, second liquid level sensor the 12, the 3rd liquid level sensor 13
" high ", " in ", " low " different liquid level adjust first water pump the 5, second water pump respectively
6, the 3rd water pump 7, and the respective running speed of aerator 10, value corresponding to respective rotating speed is by PLC
Controller is according to prior setting output, to reach energy-saving effect.
The start and stop strategy of frequency conversion motor needs to carry out parameter setting according to real system, " high ", " in ",
" low " each liquid level, sets different working speeds.
According to complicated circuit or software program, it is also possible to improve control accuracy further, the most permissible
Acceleration and deceleration time and design segmentation acceleration and deceleration stop mode are set, use three-step timing scheme, be respectively
Speed one, speed two and speed three, from successively decreasing successively to low speed at a high speed.When water liquid level is high,
System allows to use the fastest rotating speed one to run, when regulating reservoir 2, pre-treatment pond 3 and MBR process
During the water liquid level in pond 4 is reduced to or time low, corresponding first water pump the 5, second water pump the 6, the 3rd water pump 7
Rotating speed successively decrease successively, until the slowest rotating speed three, on the contrary accelerator.
The rule of speed control strategy is: when the level error detected is bigger when, it is desirable to control
Amount processed makes error reduce as early as possible, when the level error detected is relatively small when, more considerations
The stability of system, the error of elimination system the most as far as possible.
In like manner, the rotating speed of aerator 10 can also change accordingly according to the height of liquid level.
Both can use two grades of controls, it is also possible to use 3 grades of speed-regulating schemes, be respectively " quickly ",
" middling speed " and " at a slow speed " third gear, corresponding liquid level high, medium and low.
As further improving, it is also possible to consider that two liquid level sensors control blower fan, example simultaneously
As when the water liquid level in Aerobic Pond 32 and MBR process pond 4 is " high " simultaneously, used " quickly "
Shelves rotating speed, air quantity is maximum；When Aerobic Pond 32 and MBR processes the water liquid level in pond 4 be " in " simultaneously
Time, use " middling speed " shelves rotating speed；And when Aerobic Pond 32 and MBR processes the water liquid level in pond 4 wherein
One is " high ", another be " in " time, the rotating speed of aerator 10 is also adopted by " quickly " shelves and turns
Speed.Other the like, the most in logic circuits, increase corresponding input and more one layer
Logical judgment device, certainly may be used without software mode
Concrete sewage disposal device includes, has the first water pump 5 and the first level sensing in regulating reservoir 2
Device 11, the liquid level data that the first liquid level sensor 11 records is input to PLC, the first water pump 5
By PLC by the operation of Frequency Converter Control the first water pump 5.The second water pump is had in Aerobic Pond 32
6, the second liquid level sensor 12 and the first aerator 15, the liquid level number that the second liquid level sensor 12 records
According to being input to PLC, the second water pump 6 by PLC by Frequency Converter Control the second water pump 6
Run, aerator 10 by PLC by the operation of Frequency Converter Control aerator 10, the first aerator
The air quantity of 15 is provided by aerator 10, and aerator 10 supplies to the second aerator 16 simultaneously.At MBR
Processing in pond 4 and have, the 3rd liquid level sensor 13 and aerator 16, the 3rd liquid level sensor 13 records
Liquid level data is input to PLC.Cleaning drug slot 14 to be used for sterilizing, the 3rd water pump 7 is intake and goes out
Being respectively arranged with an electromagnetic valve at water, be the first electromagnetic valve 17 and the second electromagnetic valve 20, the 3rd water pump 7 is used for
Emission compliance water, and the 4th water pump 8 is for Membrane cleaning, when being carried out, PLC sends out
Send two groups of signals to the 3rd electromagnetic valve 18 and the 4th electromagnetic valve 19, two valves are opened, sends simultaneously
First electromagnetic valve 17 and the second electromagnetic valve 20 are closed by signal, and water water tank from the outside is taken out by the 4th water pump 8
Come in film is carried out, clean after the time set terminates, then signaled the by PLC
Three electromagnetic valves 18 and the 4th electromagnetic valve 19 are closed, and the first electromagnetic valve 17 and the second electromagnetic valve 20 are opened,
Enter normal operating condition.
In the present embodiment, liquid level sensor uses continuous measurable throw-in type pressure transducer, except liquid
The outer native system of level sensor is also devised with the sensor of other various dimensions.In traditional sewage disposal system
Single monitoring index, it is impossible to meet the parameter need that sewage disposal system in the technical program automatically controls
, therefore the technical program devises the monitoring index of various dimensions.Such as it is used for monitoring each pump rotary speed
Photoelectric encoder and for monitoring the electromagnetic flowmeter of each pump capacity.
As it is shown on figure 3, PLC is additionally provided with for by each water pump and aerator in power frequency work
Make the switching circuit of switching between state and variable frequency work state.The stability right and wrong of sewage disposal system
The most important index.The when that once converter breaking down or needs to safeguard, it is possible to automatically switch to
Power frequency operation, when PLC detects frequency converter failure signal when, can send finger automatically
Order starts switching circuit, makes water pump or aerator be switched under power frequency run.Otherwise, if failture evacuation,
Then automatically switch to the most energy-conservation variable frequency work pattern.
When PLC detects frequency converter failure signal when, can automatically send instruction and disconnect
First switch 23 and second switch 24, makes converter 25 quit work, and time delay connected the 3rd after 1 second
Switch 26, makes water pump 27 be switched under power frequency run.Otherwise, to be switched to variable frequency work pattern,
The most first disconnecting the 3rd switch 26, then the first switch 23 and second switch 24 is connected in time delay after 1 second,
Then water pump 27 returns to variable mode.
As shown in Figure 4, system command by industrial control computer in operating room (host computer) 51 or is touched
Touching screen 54 to send, touch screen 54 connects field controller by communication wire 58, and (PLC controls
Device) 52, operating room industrial control computer (host computer) 51 connects existing by communication wire 57
Field controller (PLC) 52, is dealt into field controller (PLC) 52 by instruction,
Start according to command content and drive drive system 53, drive system 53 promote or effluent sewerage 55,
By liquid level sensor 56, the feedback information obtained passed to field controller (PLC) 52,
The soft of autonomous Design is passed through again by operating room industrial control computer (host computer) 51 or touch screen 54
Part by data feedback to operator so that it is take corresponding control strategy etc., in operating room industry control
By also may be used from major software and fieldbus 59, Ethernet 60 on computer processed (host computer) 51
To realize remote monitoring function.
The control room of MBR sewage disposal system, is provided with power cabinet, placed inside electric controling line
The parts such as road and converter, touch screen 54 is arranged on long-distance control cabinet, this long-distance control cabinet (dress
Have touch screen 14 and start-stop button) there are operation key panel and LCD display, pass through panel button
Operation, by parameters such as middle word sum word display liquid level, water pump and aerator operation conditions.
Industrial control computer (host computer) in operating room 51 by interface or wireless data module with
Field controller (PLC) 52 communication；Industrial control computer (host computer) 51 can control
Water pump and aerator run；Field controller (PLC) 52 can be current running status ginseng
The data such as number and liquid level deliver to industrial control computer (host computer) 51 in real time, simultaneously industry control
Computer processed (host computer) 51 can also be real-time data by interface and long-range computer communication
Feed-in metering computer, in order to form directivity pattern, test report etc..
Use process is as follows:
First sewage is carried out physical treatment, through grid canal 1 by the suspended contaminant of partial particulate shape
Filter out.Regulating reservoir 2 comprises regulatory region 21 and settling zone 22, owing to water quality and the water yield of sewage have
Inhomogeneities, regulatory region 21 primarily serves homogenizing water quality, regulation the waste water water yield, the work of anti-load impact
With, it is ensured that enter aftertreatment systems the waste water quality water yield uniform and stable, settling zone 22 sewage with
Activated sludge mixing in pond carries out preliminary reaction and separation.Pre-treatment pond 3 includes anoxic pond 31 He
Aerobic Pond 32, is respectively completed dephosphorization and the operation denitrogenated in anoxic pond 31 and Aerobic Pond 32, at Aerobic Pond
In 32, sewage through sufficient aeration and is fully contacted with activated sludge, and the microorganism in activated sludge turns
The Organic substance changing a part is harmless inorganic matter.MBR processes pond 4 and processes pond for immersion MBR,
Being to be placed in biochemistry pool by film separation unit, water produces mainly by the 3rd water pump through the motive force of film
Negative pressure realizes, and when relying on aeration, the agitation of air bubble forms cross-current on film surface, realizes film table
The cleaning in face, by the efficient crown_interception of film, is completely trapped at float in biological reaction pool,
Drastically increase biochemical treatment efficiency, stable effluent quality.Sewage after being processed by MBR film,
Sterilize through over cleaning drug slot 14 again, killed harmful pathogenic microorganism so that the water after process enters one
Step purifies.
As it is shown in figure 5, energy-saving principle is described as follows:
The energy consumption of water pump is analyzed with the flow restriction control of water pump and variable frequency adjustment, before Frequency Conversion Modification,
Rate of discharge uses motorized adjustment valve regulation aperture, makes the valve resistance to supplying water become big, according to water pump
Characteristic curve and the resistance curve of pipeline, flow restriction control does not change water pump curve, outlet
Control valve opening is turned down, and by analyzing it is recognised that outlet valve aperture is the least, rate of discharge is more
Little, when lift one timing, the resistance of ducting is the biggest, and the rotating speed of water pump is constant, i.e. its output and
Torque is basically unchanged, and major part power all consumes in the resistance of ducting, wastes the most very much the energy.
Variable frequency regulating speed control is then in the case of resistance of ducting characteristic is constant, turns by changing the work of water pump
Speed so that it is characteristic curve changes, thus changes operating point and realize regulating as shown in Figure 5.
If the speed of pump is dropped to n2 from n1, i.e. characteristic curve represented in Fig. 5 is become n2 from n1,
Running operating point will move on to C point from B point, and lift changes to H3 from H2.Bent according to centrifugal pump characteristics
Line formula:
P=ρ QH/102 η
In formula, P is pump power, kW；Q is flow, m3/s；H is water pump lift, m；ρ is
Output medium bulk density, kg/m3；η is pump efficiency, %
Can obtain water pump operation in Fig. 5 in the difference of B point and the shaft power of C point is:
Δ P=ρ Q2(H2-H3)/102η
Therefore, can obtain
Δ P=ρ Q2 (H2-H3)/102 η
It is to say, during with Valve controlling flow, have the power of Δ P to be depleted and slattern, and with
Valve constantly to turn down, this loss is also constantly increasing.And when using variable frequency regulating speed control, due to stream
The first power of amount Q and rotating speed n is directly proportional；Lift H and rotating speed n square is directly proportional；Shaft power P with turn
Speed n cube is directly proportional, i.e. power and rotating speed n is that the relation of 3 powers declines, therefore reduces the rotating speed of pump
Time its energy-saving effect be the most significant.Table 1 is ideally relation between each amount.
Relation between table 1 ideally each amount
| Flow (%) | Rotating speed (%) | Lift (%) | Power (%) |
| 100 | 100 | 100 | 100 |
| 90 | 90 | 81 | 72.9 |
| 80 | 80 | 64 | 51.2 |
| 70 | 70 | 49 | 34.3 |
| 60 | 60 | 37 | 20.8 |
| 50 | 50 | 25 | 12.5 |
| 40 | 40 | 16 | 6.4 |
As shown in Table 1, when flow reduction, regulation rotating speed can save mass energy, frequency control
It not the method with pass minor valve, but motor speed is lowered, then in the situation of same traffic
Under, the energy originally consumed on valve just can be saved completely.Therefore, with the shaft work of B point in Fig. 5
Rate deducts the shaft power of C point, it is simply that the amount of energy saving that frequency control is obtained.Such as: work as traffic demand
When being reduced to 70%, by frequency control, the most only need rated power 34.3%.Can save near
The energy resource consumption of 2/3 (65.7%).
The foregoing is only preferred embodiment of the present utility model, be not limited to this practicality new
Type, for a person skilled in the art, this utility model can have various modifications and variations.All
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made,
Within should be included in protection domain of the present utility model.
Claims (7)
1. an energy-conservation MBR sewage disposal system, including the regulating reservoir being sequentially communicated, pre-treatment pond
And the MBR being built-in with membrane bioreactor processes pond, it is characterised in that
Pre-treatment pond and MBR are provided with aerator in processing pond, and this aerator coupling has aerator；
The first liquid level sensor it is provided with and for the first of pre-treatment pond transalkylation effluent in regulating reservoir
Water pump；
The second liquid level sensor it is provided with and for processing pond transalkylation effluent to MBR in pre-treatment pond
Second water pump；
MBR is provided with the 3rd liquid level sensor in processing pond, MBR processes the outlet in pond and is connected to the 3rd
Water pump；
It is additionally provided with for that receive each liquid level sensor signal and control so that output is corresponding compared with threshold value
The logic circuit of signal, described aerator and each water pump are connected to the frequency conversion for regulating power respectively
Device, each converter accesses and is controlled by described logic circuit.
Energy-conservation MBR sewage disposal system the most as claimed in claim 1, it is characterised in that described
Regulating reservoir flows to be divided into regulatory region and settling zone along sewage；Described pre-treatment pond is divided into scarce along the sewage flow direction
Oxygen pond and Aerobic Pond；Aerator in pre-treatment pond is positioned in Aerobic Pond；Described first water pump and
Two water pumps are the immersible pump being respectively implanted described settling zone and Aerobic Pond.
Energy-conservation MBR sewage disposal system the most as claimed in claim 2, it is characterised in that described
Logic circuit is integrated to PLC, and described MBR sewage disposal system is additionally provided with and described PLC
Controller connects in order to the touch screen carrying out signal input and output.
Energy-conservation MBR sewage disposal system the most as claimed in claim 3, it is characterised in that also set
Have:
Long-distance control cabinet, described PLC, touch screen and each aerator and water pump and control
Switch is installed in this long-distance control cabinet；
Power cabinet, the converter of described aerator and each water pump is arranged in this power cabinet；
Host computer, is connected with described PLC.
Energy-conservation MBR sewage disposal system the most as claimed in claim 4, it is characterised in that described
Logic circuit includes that multiple-group analysis device, each group of comparator are respectively provided with:
The input connected with corresponding liquid level sensor；
For inputting the reference edge of threshold value；
The outfan being connected with corresponding converter.
Energy-conservation MBR sewage disposal system the most as claimed in claim 5, it is characterised in that described
Reference edge is two, two threshold values of the most corresponding height.
Energy-conservation MBR sewage disposal system the most as claimed in claim 6, it is characterised in that described
Aerator has two, and the aerator processed in pond with pre-treatment pond and MBR respectively is connected；Or institute
Stating aerator and have one, described pre-treatment pond and MBR process aerator in pond in parallel
Wind path is connected with this aerator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262233.3U CN205556396U (en) | 2016-03-31 | 2016-03-31 | Energy -conserving MBR sewage treatment system |
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| CN201620262233.3U CN205556396U (en) | 2016-03-31 | 2016-03-31 | Energy -conserving MBR sewage treatment system |
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| CN205556396U true CN205556396U (en) | 2016-09-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698809A (en) * | 2016-11-14 | 2017-05-24 | 武汉兴天宇环境股份有限公司 | Novel sewage treatment equipment for MBR membrane reactor |
| CN107376456A (en) * | 2017-08-17 | 2017-11-24 | 桑德集团有限公司 | A kind of sewage disposal filtering cloth filtering pool autocontrol method |
| CN107973402A (en) * | 2017-11-28 | 2018-05-01 | 华夏碧水环保科技有限公司 | Pulling flow type AO reactors |
| CN109592780A (en) * | 2019-01-16 | 2019-04-09 | 格瑞拓动力股份有限公司 | A kind of control device, method and sewage disposal system |
| CN110515320A (en) * | 2018-05-22 | 2019-11-29 | 西门子股份公司 | Drive control method, drive system, processing system and storage medium |
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2016
- 2016-03-31 CN CN201620262233.3U patent/CN205556396U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698809A (en) * | 2016-11-14 | 2017-05-24 | 武汉兴天宇环境股份有限公司 | Novel sewage treatment equipment for MBR membrane reactor |
| CN107376456A (en) * | 2017-08-17 | 2017-11-24 | 桑德集团有限公司 | A kind of sewage disposal filtering cloth filtering pool autocontrol method |
| CN107973402A (en) * | 2017-11-28 | 2018-05-01 | 华夏碧水环保科技有限公司 | Pulling flow type AO reactors |
| CN107973402B (en) * | 2017-11-28 | 2020-12-11 | 华夏碧水环保科技有限公司 | Plug flow type AO reactor |
| CN110515320A (en) * | 2018-05-22 | 2019-11-29 | 西门子股份公司 | Drive control method, drive system, processing system and storage medium |
| CN109592780A (en) * | 2019-01-16 | 2019-04-09 | 格瑞拓动力股份有限公司 | A kind of control device, method and sewage disposal system |
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Address after: 310012 Xihu District, Hangzhou, Wen Wen Road, No. 820, room 2, building 401, room two Patentee after: Zhejiang environmental protection Polytron Technologies Inc Address before: 4, building 310012, middle group, No. two West 820, Wen Xi Road, Hangzhou, Zhejiang Patentee before: HANGZHOU WENYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
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