CN110436632A - It is a kind of continuous automatic running and miniature MBR pilot plant with self-cleaning function and its technique to be used - Google Patents
It is a kind of continuous automatic running and miniature MBR pilot plant with self-cleaning function and its technique to be used Download PDFInfo
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- CN110436632A CN110436632A CN201910861027.2A CN201910861027A CN110436632A CN 110436632 A CN110436632 A CN 110436632A CN 201910861027 A CN201910861027 A CN 201910861027A CN 110436632 A CN110436632 A CN 110436632A
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- mbr
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- water
- cleaning
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- 238000004140 cleaning Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 132
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000011020 pilot scale process Methods 0.000 claims abstract description 18
- 238000005276 aerator Methods 0.000 claims abstract description 11
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 239000012459 cleaning agent Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 9
- 238000005273 aeration Methods 0.000 description 4
- 230000037452 priming Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The present invention provides it is a kind of can continuous automatic running and miniature MBR pilot plant with self-cleaning function, it is characterised in that: be made of raw water box, anoxic pond, MBR unit, cleaning case and water producing tank；Wherein, the raw water box is connected to anoxic pond, and liquid is conveyed into anoxic pond；The anoxic pond is connected to aerobic tank, and liquid is conveyed into aerobic tank；The MBR unit, including aerator and aerobic tank；MBR equipment is installed in the aerobic tank；The aerator, to aerobic tank air-blowing；In the MBR equipment there is MBR to enter and leave water end (W.E.)；The MBR enters and leaves water end (W.E.), is respectively communicated with water producing tank and cleaning case.The equipment is small, facilitates placement and transport, is not merely convenient for the pilot scale at scene, while water sample can be fetched laboratory and tested, and the pilot plant is easy to use, keeps an eye on without 24 hours, and night can automatic running.
Description
Technical field
The invention belongs to the testing fields of anti-MBR system, and in particular, to one kind can continuous automatic running and with self-cleaning function
Can miniature MBR pilot plant and its use technique.
Background technique
Existing MBR pilot plant is typically designed very simple, only aeration and MBR device, and air blast is used in aeration tank
Machine aeration, then water is sucked out out of film by self priming pump.Such pilot plant is suitable for using at user scene, and must be artificial
Look at, can not continuous operation, the requirement of design is not achieved, can not also judge whether system suitable by self-cleaning.Only it is applicable in
In teaching, show the effects of.
Summary of the invention
The present invention aims to overcome the above drawbacks, and it is small to provide a kind of equipment, facilitates placement and transport, is not merely convenient for scene
Pilot scale, while water sample can be fetched laboratory and tested, the pilot plant is easy to use, keeps an eye on without 24 hours, night
It can automatic running；Cleaning case is added by replacing different cleaning agents, cleaning agent cleaning effect superiority and inferiority can be compared, it is suitable preferably to go out
Cleaning agent.
The present invention provides it is a kind of can continuous automatic running and miniature MBR pilot plant with self-cleaning function, feature
It is: is made of raw water box, anoxic pond, MBR unit, cleaning case and water producing tank；
Wherein, above-mentioned raw water box is connected to anoxic pond, and liquid is conveyed into anoxic pond；
Above-mentioned anoxic pond is connected to aerobic tank, and liquid is conveyed into aerobic tank；
Above-mentioned MBR unit, including aerator and aerobic tank；
MBR equipment is installed in above-mentioned aerobic tank；
Above-mentioned aerator, to aerobic tank air-blowing；
In above-mentioned MBR equipment there is MBR to enter and leave water end (W.E.)；
Above-mentioned MBR enters and leaves water end (W.E.), is respectively communicated with water producing tank and cleaning case.
Above-mentioned water producing tank has water outlet and water inlet end, enters and leaves water end (W.E.) with MBR and communicates；It can be achieved to convey to MBR equipment
Clean film water, and the normal demand for producing water；
Above-mentioned cleaning case has water outlet, enters and leaves water end (W.E.) with MBR and communicates；It can be achieved to convey cleaning film to MBR equipment with clearly
Washing lotion and by the defeated effect back to cleaning case of cleaning solution.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: above-mentioned MBR enters and leaves water end (W.E.), has MBR to enter and leave supply mains in succession；
Above-mentioned MBR enters and leaves supply mains and is connected to the water inlet end of equipment for liquid transportation, forms access A；
The water outlet of aforesaid liquid conveying equipment is connected to the water inlet of water producing tank, forms access B；
There is valve A on above-mentioned access A；
Access between above-mentioned valve A and the water inlet end of equipment for liquid transportation is access A1.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: above-mentioned access B is equipped with fluid flowmeter；
The water inlet end of aforesaid liquid flowmeter is connected to equipment for liquid transportation, forms access B1；
The water outlet of aforesaid liquid flowmeter is connected to water producing tank, forms access B2；
There is valve B on above-mentioned access B2；
Access between above-mentioned valve B and the water outlet of fluid flowmeter is access B2-1.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: on above-mentioned access A1, there is MBR shunt pipe；
Above-mentioned MBR shunt pipe is connected to the discrepancy water end (W.E.) of cleaning case, forms access C；
On above-mentioned access B2-1, there is the first shunt pipe；
Above-mentioned first shunt pipe enters and leaves supply mains with MBR and is connected to, and forms access D；
There is valve D on above-mentioned access D；
There is valve C on above-mentioned access C；
The access of above-mentioned valve C and cleaning case entered and left between water end (W.E.) is access C1；
There is the second shunt pipe on above-mentioned access C1；
Above-mentioned second shunt pipe is connected to access D, forms access E；
There is valve E on above-mentioned access E.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: the intake-outlet position of above-mentioned cleaning case has valve F；
The intake-outlet of above-mentioned water producing tank is connected to access C1；
The intake-outlet position of above-mentioned water producing tank has valve G.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: above-mentioned aerobic bottom of pond portion has sewage draining exit.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: above-mentioned aerator, including air blower, air volume meter and volume control damper；
Above-mentioned air blower is connected to by tracheae with aerobic tank, air-blowing into it；
On above-mentioned tracheae, along the direction of gas flowing, it is sequentially installed with air volume meter and volume control damper.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: also there is control device；
Each component is electrically connected in above-mentioned control device and miniature MBR pilot plant；
According to the value for the fluid flowmeter that real-time or periodic monitor arrives, the starting or closing of each component are carried out；
Or
Also there is control device；
Each component is electrically connected in above-mentioned control device and miniature MBR pilot plant；
Periodically carry out the starting or closing of each component.
It can continuous automatic running and miniature MBR pilot scale with self-cleaning function in addition, the present invention also provides above-mentioned one kind
The cleaning process of equipment, it is characterised in that:
When the value of fluid flowmeter is higher than setting value, valve A and valve B is only opened；
When the value of fluid flowmeter is lower than setting value, carries out following steps and carries out cleaning agent cleaning:
S1, valve A and valve B is closed, opens valve C, D and F, the cleaning agent in cleaning case, leaching are inputted into MBR equipment
After the duration for steeping setting；
S2, valve C is closed, opens valve A, E and F, the cleaning agent in MBR equipment is returned in cleaning case.
It can continuous automatic running and miniature MBR pilot scale with self-cleaning function in addition, the present invention also provides above-mentioned one kind
The cleaning process of equipment, it is further characterized in that: the cleaning in order to realize diaphragm；
When the value of fluid flowmeter is lower than setting value, after completing cleaning agent cleaning, following steps are also carried out:
S1, valve A and valve B is closed, opens valve C, D and G, the production water in water producing tank is inputted into MBR equipment, is impregnated
After the duration of setting；
S2, valve C is closed, opens valve A, E and G, the production water in MBR equipment is returned in cleaning case.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: on the access that above-mentioned raw water box is connected to anoxic pond, it is successively arranged regulating valve and liquid transporting body.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: in the case that above-mentioned valve A and valve B is opened, the water inlet of realization MBR equipment to water producing tank
One-way passage.
Further, one kind provided by the invention can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is further characterized in that: above-mentioned valve A and valve B is closed, and in the case that valve C, D and F are opened, realizes the disengaging of cleaning case
The mouth of a river to MBR equipment one-way passage；
Above-mentioned valve C and D is closed, and in the case that valve A, E and F are opened, realizes the intake-outlet of MBR equipment to cleaning case
One-way passage；
Above-mentioned valve A and valve B are closed, and in the case that valve C, D and G are opened, realize the intake-outlet of water producing tank to MBR
The one-way passage of equipment；
Above-mentioned valve C and D is closed, and in the case that valve A, E and G are opened, realizes the intake-outlet of MBR equipment to water producing tank
One-way passage.
The function and effect of the present invention:
The present invention passes through design raw water box, anoxic pond, aerobic tank (containing MBR), service sink, water producing tank, production water ga(u)ge, wind
The composition such as meter, micro-blower, Miniature automatic suction pump, raw water pump can design system to automatic running and periodically carry out online
Cleaning, to achieve the purpose that system continuous operation, while can judge the cleaning effect of different cleaning agents by equipment in this.
Detailed description of the invention
What Fig. 1, embodiment were related to can continuously the structure of automatic running and the miniature MBR pilot plant with self-cleaning function show
It is intended to.
Specific embodiment
As shown in Figure 1, present embodiments providing one kind can continuous automatic running and the miniature MBR pilot scale with self-cleaning function
Equipment, by the raw water box 100 of 250L, the anoxic pond 200 of 10L, the water producing tank of the MBR unit of 20L, the cleaning case 400 of 10L, 10L
500 and electric cabinet 600 (purpose of the electric cabinet is to carry out main control panel to summarize installation, according to actual place etc.
Needs, the electric cabinet can also be omitted) composition；
In the present embodiment, the water inlet of the water outlet 1A of the raw water box 100 and raw water pump 110 passes through pipeline connection, In
The access is equipped with valve 1, the water of the controllable water inlet of valve 1；
The water outlet of the raw water pump 110 and the water inlet 2A of anoxic pond 200 are conveyed former by pipeline connection into anoxic pond
Liquid in water tank；
The anoxic pond 200 has water outlet 2B with upper；
The MBR unit, including aerator end 330 and aerobic tank 310；
The aerator end 330 is sequentially communicated the micro-blower in valve 6, air volume meter 640 and electric cabinet by tracheae
620；
Starting micro-blower 620 can be realized, by the aerator end 330 (the generally structures such as venthole/pipe), to
The effect of air-blowing in aerobic tank 310；
The air volume meter 640 is used to measure the wind speed and flow of current tracheae；
The valve 6, for regulating and controlling the blow rate required of current tracheae；
There is water inlet 3A and sewage draining exit 311 on the aerobic tank；
The water outlet 2B of above-mentioned anoxic pond is connected to the water inlet 3A of aerobic tank, is realized the water in anoxic pond to aerobic tank
The effect of interior conveying；
The aerobic tank is also interior to be equipped with MBR equipment 320；
In the MBR equipment 320 there is MBR to enter and leave water end (W.E.) 3B；
Enter and leave on water end (W.E.) 3B in the MBR has MBR to enter and leave supply mains 10 in succession；
The MBR enters and leaves supply mains 10, in the position for leaving MBR discrepancy water end (W.E.) 3B, separates MBR exit branch 11 and MBR goes out
Enter water branch pipe 12；
The MBR exit branch 11 is connected to the water inlet 6A of Miniature automatic suction pump 610, and valve 2 is equipped on the access, definition
Line segments between valve 2 and the water inlet 6A of Miniature automatic suction pump 610 are liquid-in pipe 13；
There is a branch pipe on the liquid-in pipe 13, be defined as cleaning pipe 14；
The cleaning pipe 14 is connected to the water outlet 4A of cleaning case 400；
In the cleaning pipe 14, using water producing tank as starting point, it is sequentially installed with valve 4 and valve 9, defines valve 4 and valve 9
Between line segments be cleaning solution collecting pipe 15；
There is a branch pipe 16, which is connected to the intake-outlet 5B of water producing tank, and should on the cleaning solution collecting pipe 15
There is valve 5 on branch pipe 16；
In addition, by pipeline 17, being connected to the water inlet of flowmeter 630 at the water outlet 6B of the Miniature automatic suction pump 610；
The water outlet of the flowmeter 630 is connected with outfall sewer 18；
There are two branch pipes for the tip tool of the outfall sewer 18, i.e., produce water branch pipe 19 and ejected wash water branch pipe 20；
The production water branch pipe 19 is connected to the water inlet 5A of water producing tank, has valve 3 on the pipeline of the connection；
, the first ejected wash water branch pipe 21 and the second ejected wash water branch pipe the tip tool of the ejected wash water branch pipe 20 is there are two branch pipe, i.e.,
22；
The first ejected wash water branch pipe 21 and MBR Water Exit branch pipe 12 are connected at valve 7, and realization summarizes；
The second ejected wash water branch pipe 22 is equipped with valve 8, by being connected to after valve 8 with cleaning solution collecting pipe 15.
The function and effect of the present invention:
In the present embodiment, raw water box is designed to 250L, can guarantee that continuous operation reaches after making topped up with water of system
It does not cut off the water supply within 24 hours.By robot control system(RCS) (or passing through control valve 1 and valve 3), when system is run, water is beaten by raw water pump
Enter in anoxic pond, amount of water is consistent with self-priming discharge of pump, is then flow automatically from anaerobic pond to aerobic tank (aerobic tank design row
Dirty valve, daily 1-2 days can blowdown it is primary), open air blower and aerobic tank be aerated, the blow rate required is controlled by valve 6；Pass through again
Miniature automatic suction pump is opened, valve 2 is opened, MBR produces water and will be sucked out from water producing pipe, is observed by flowmeter and water flow is sucked out, simultaneously
Production water flow can be reduced by control valve 3.Design water yield is 10L/h, and the 250 liters of water needed daily in this way can be by primary
The form that raw water box is added is added, and addition once can achieve one day continuous automatic running.
Cleaning agent is packed into cleaning case, when system water yield is less than 8L/h, system is out of service (i.e., to close 6 and of valve
1) valve 2, is closed, valve 4 and valve 9 are opened, closes valve 3, opens valve 7, opens self priming pump 30 minutes, about 5L cleaning agent medical fluid can be added
Enter in MBR device, but not penetrate into aeration tank, after impregnating 2 hours, closes valve 9 and valve 7, open valve 2, valve 8 and valve 4, open
It opens self priming pump 30 minutes, the cleaning solution after immersion can be turned again in cleaning case, to be rinsed to MBR film, it is only necessary to will
Valve 4 switches to valve 5, other cleaning processes are constant, can be rinsed MBR film, all processes pass through automatically controlled system in system
System control.It can reach the purpose of system continuous operation in this way, simultaneity factor band self-cleaning function can be applied well on site
Pilot scale.
Using the above equipment and technique, designed size is suitable, and the whole capacity to water is 50L in addition to raw water box, can will set
It is standby small, facilitate placement and transport, be not merely convenient for the pilot scale at scene, while water sample can be fetched laboratory and tested, it should
Pilot plant is easy to use, keeps an eye on without 24 hours, and night can automatic running；Cleaning case is added by replacing different cleaning agents,
Cleaning agent cleaning effect superiority and inferiority can be compared, preferably suitable cleaning agent out.
In the present embodiment, can also have central control system；
Each component is electrically connected in the central control system and miniature MBR pilot plant；
According to the value for the fluid flowmeter that real-time or periodic monitor arrives, the starting or closing of each component are carried out；
Periodically carry out the starting or closing of each component.
Claims (10)
1. one kind can continuous automatic running and the miniature MBR pilot plant with self-cleaning function, it is characterised in that: by raw water box,
Anoxic pond, MBR unit, cleaning case and water producing tank composition；
Wherein, the raw water box is connected to anoxic pond, and liquid is conveyed into anoxic pond；
The MBR unit, including aerator and aerobic tank；
The anoxic pond is connected to aerobic tank, and liquid is conveyed into aerobic tank；
MBR equipment is installed in the aerobic tank；
The aerator, to aerobic tank air-blowing；
In the MBR equipment there is MBR to enter and leave water end (W.E.)；
The MBR enters and leaves water end (W.E.), is respectively communicated with water producing tank and cleaning case.
2. one kind as described in claim 1 can continuous automatic running and the miniature MBR pilot plant with self-cleaning function, it is special
Sign is:
The MBR enters and leaves water end (W.E.), has MBR to enter and leave supply mains in succession；
The MBR enters and leaves supply mains and is connected to the water inlet end of equipment for liquid transportation, forms access A；
The water outlet of the equipment for liquid transportation is connected to the water inlet of water producing tank, forms access B；
There is valve A on the access A；
Access between the valve A and the water inlet end of equipment for liquid transportation is access A1.
3. one kind as claimed in claim 2 can continuous automatic running and the miniature MBR pilot plant with self-cleaning function, it is special
Sign is:
The access B is equipped with fluid flowmeter；
The water inlet end of the fluid flowmeter is connected to equipment for liquid transportation, forms access B1；
The water outlet of the fluid flowmeter is connected to water producing tank, forms access B2；
There is valve B on the access B2；
Access between the valve B and the water outlet of fluid flowmeter is access B2-1.
4. one kind as claimed in claim 3 can continuous automatic running and the miniature MBR pilot plant with self-cleaning function, it is special
Sign is:
On the access A1, there is MBR shunt pipe；
The MBR shunt pipe is connected to the discrepancy water end (W.E.) of cleaning case, forms access C；
On the access B2-1, there is the first shunt pipe；
First shunt pipe enters and leaves supply mains with MBR and is connected to, and forms access D；
There is valve D on the access D；
There is valve C on the access C；
The access of the valve C and cleaning case entered and left between water end (W.E.) is access C1；
There is the second shunt pipe on the access C1；
Second shunt pipe is connected to access D, forms access E；
There is valve E on the access E.
5. one kind as claimed in claim 4 can continuous automatic running and the miniature MBR pilot plant with self-cleaning function, it is special
Sign is:
The water outlet position of the cleaning case has valve F；
The water outlet of the water producing tank is connected to access C1；
The water outlet position of the water producing tank has valve G.
6. one kind as described in claim 1 can continuous automatic running and the miniature MBR pilot plant with self-cleaning function, it is special
Sign is:
The aerobic bottom of pond portion has sewage draining exit.
7. one kind as described in claim 1 can continuous automatic running and the miniature MBR pilot plant with self-cleaning function, it is special
Sign is:
The aerator, including air blower, air volume meter and volume control damper；
The air blower is connected to by tracheae with aerobic tank, air-blowing into it；
On the tracheae, along the direction of gas flowing, it is sequentially installed with air volume meter and volume control damper.
8. one kind as claimed in claim 1 can continuous automatic running and the miniature MBR pilot scale with self-cleaning function set
It is standby, it is characterised in that:
Also there is control device；
Each component is electrically connected in the control device and miniature MBR pilot plant；
According to the value for the fluid flowmeter that real-time or periodic monitor arrives, the starting or closing of each component are carried out；
Or
Also there is control device；
Each component is electrically connected in the control device and miniature MBR pilot plant；
Periodically carry out the starting or closing of each component.
9. a kind of as described in claim 5 or 8 can be continuous automatic running and miniature MBR pilot plant with self-cleaning function
Cleaning process, it is characterised in that:
When the value of fluid flowmeter is higher than setting value, valve A and valve B is opened；
When the value of fluid flowmeter is lower than setting value, carries out following steps and carries out cleaning agent cleaning:
S1, valve A and valve B is closed, opens valve C, D and F, the cleaning agent in cleaning case is inputted into MBR equipment, immersion is set
After fixed duration；
S2, valve C and D are closed, opens valve A, E and F, the cleaning agent in MBR equipment is returned in cleaning case.
10. one kind as claimed in claim 9 can continuous automatic running and the miniature MBR pilot plant with self-cleaning function it is clear
Wash technique, it is characterised in that:
When the value of fluid flowmeter is lower than setting value, after completing cleaning agent cleaning, following steps are also carried out:
S1, valve A and valve B is closed, opens valve C, D and G, the production water in water producing tank is inputted into MBR equipment, impregnates setting
Duration after；
S2, valve C and D are closed, opens valve A, E and G, the production water in MBR equipment is returned in cleaning case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861027.2A CN110436632A (en) | 2019-09-11 | 2019-09-11 | It is a kind of continuous automatic running and miniature MBR pilot plant with self-cleaning function and its technique to be used |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861027.2A CN110436632A (en) | 2019-09-11 | 2019-09-11 | It is a kind of continuous automatic running and miniature MBR pilot plant with self-cleaning function and its technique to be used |
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| CN110436632A true CN110436632A (en) | 2019-11-12 |
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| CN109160608A (en) * | 2018-09-30 | 2019-01-08 | 宁波中车时代传感技术有限公司 | The MBR integrated sewage treating apparatus of two section feedings |
| CN110078205A (en) * | 2019-06-06 | 2019-08-02 | 苏州中色德源环保科技有限公司 | A kind of membrane bioreactor pilot plant test device |
| CN210595461U (en) * | 2019-09-11 | 2020-05-22 | 上海丰信环保科技有限公司 | Miniature MBR pilot plant that can continuous automatic operation and take self-cleaning function |
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