CN106430557A - Device for preventing water outlet of biochemical tank from being blocked by MBBR (Moving Bed Biofilm Reactor) filling - Google Patents
Device for preventing water outlet of biochemical tank from being blocked by MBBR (Moving Bed Biofilm Reactor) filling Download PDFInfo
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- CN106430557A CN106430557A CN201610915080.2A CN201610915080A CN106430557A CN 106430557 A CN106430557 A CN 106430557A CN 201610915080 A CN201610915080 A CN 201610915080A CN 106430557 A CN106430557 A CN 106430557A
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- water outlet
- mbbr
- screen cloth
- outlet
- filling
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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)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a device for preventing a water outlet of a biochemical tank from being blocked by MBBR (Moving Bed Biofilm Reactor) filling. The device comprises a U-shaped water outlet screen mesh arranged at the front part of the water outlet; mesh holes of the water outlet screen mesh are rhombuses with inner angles of 120 degrees and 60 degrees respectively; the edge length of each rhombus is calculated according to the size of the MBBR filling; a rear side of the screen mesh is clung to the inner side of the tank wall, which is provided with the water outlet, of the biochemical tank and covers the water outlet; the upper edge of a front side of the screen mesh is higher than the water level of the biochemical tank; a water outlet aeration pipe, which is connected with an air source through an air conveying pipe and a valve, is arranged on the bottom surface of the screen mesh; a material stopping plate is arranged on the tank wall, above the water outlet hole, of the biochemical tank, the material stopping plate is bent towards to the inner side of the tank and an upper edge of the material stopping plate is higher than the upper edge of the front side of the screen mesh; an assisted aeration pipe, corresponding to the water outlet screen mesh, is arranged at an end part, close to the tank wall, which is provided with the water outlet, of the biochemical tank, on the bottom surface of the biochemical tank. By utilizing the device provided by the invention, the water outlet of the biochemical tank can be effectively prevented from being blocked by the MBBR filling, and phenomena that the operation of equipment is influenced and the MBBR filling is lost due to sewage overflowing caused by the fact that the water outlet is blocked by the MBBR filling are avoided.
Description
Technical field
The present invention relates to sewage-treatment plant, particularly one kind prevent MBBR filling from blocking out for biochemical treatment sewage pond
The device at the mouth of a river.
Background technology
MBBR (Moving Bed Biofilm Reactor) technique, full name is MBBR technique, should
Technique passes through to add a number of suspending carrier, i.e. MBBR filling in reactor, as filling density is close to water, so
When aeration, with water in state is thoroughly mixed, the environment for making growth of microorganism is gas, liquid, solid three-phase.By carrier in water
In collision and shear action, make air bubble more tiny, the utilization rate of oxygen is improved；Meanwhile, single carrier is (generally empty
Heart cylinder) inside and outside with different biological species, some anaerobe or simultaneous oxygen bacterium, outside preferably bacteria, list is grown in endoporus
Individual carrier is a microreactor, nitration reaction and anti-nitration reaction while existing, so that wastewater treatment efficiency is improved.
MBBR technique has the advantage of conventional fluidization bed and biological contact oxidation process concurrently, is a kind of new and effective sewage
Processing method, the method relies on the aeration in Aeration tank and the castering action of current to make carrier in fluidized state, and then is formed
The activated sludge of suspension growth and the biomembrane of apposition growth, make moving-bed biofilm full of whole space reactor, fully send out
Attachment phase and suspended phase both superioritys of biology is waved, is allowed to maximize favourable factors and minimize unfavourable ones, is complementary to one another, improve sewage treating efficiency.
Although MBBR technique can effectively improve wastewater treatment efficiency, the existing sewage treatment plant using the technique is universal
There is a technical problem for affecting the process operation, here it is the MBBR filling being invested in biochemistry pool is in aeration and current
Outlet is easily gathered under effect, outlet is blocked, cause biochemical pool water level to raise, so that sewage is overflow from biochemistry pool top
Go out.The normal operation of sewage disposal system is not only had a strong impact on, and a part of filling can be lost with the sewage for overflowing.This
It is the key factor for affecting MBBR technique popularization and application at present.
Content of the invention
The mesh of the present invention is to provide a kind of device for preventing MBBR filling from blocking biochemistry pool outlet, to solve existing sewage
The technical problem of the MBBR filling blocking biochemistry pool outlet that treatment plant is present.
What the present invention was provided prevents MBBR filling from blocking the device of biochemistry pool outlet, including being placed in water outlet epistome, indulging
To the water outlet screen cloth that section takes the shape of the letter U, the back of the water outlet screen cloth abuts in the inner side of the measurement for biochemical pool wall at outlet place, and hides
Lid outlet, the in front upper edge of water outlet screen cloth is higher by 300 400mm of biochemical pool water level (design water level)；In water outlet screen cloth
Bottom surface has the outlet aeration tube for connecting by appendix and valve with source of the gas；In measurement for biochemical pool wall is located at more than apopore
On wall, in oriented pond, bending, upper edge are higher by the striker plate on edge on the front of the water outlet screen cloth；In biochemistry pool bottom surface near water outlet
There is the auxiliary aeration tube corresponding with the water outlet screen cloth end of mouth place measurement for biochemical pool wall.
Be MBBR filling is down to from the race leak rate of water outlet screen cloth minimum, while again will not be too small because of the mesh of water outlet screen cloth
Increase the probability that blocked by MBBR filling of water outlet screen cloth, the preferred adjacent inner corner of the mesh of water outlet screen cloth is respectively 120 ° and 60 °
Rhombus, length of side a of rhombus is calculated by following formula：
A=(0.85R2+0.8L2)^(1/2)
In formula：
The length (mm) of L hollow cylinder MBBR filling granule,
The external diameter (mm) of R hollow cylinder MBBR filling granule.
The operation principle of the present invention is：
When biochemistry pool normally runs, outlet aeration tube does not work, and aeration tube and auxiliary aeration tube work.MBBR filling one
Denier is gathered near water outlet screen cloth, under the gas collective effect of aeration tube and auxiliary aeration tube, can be circulated, be left water outlet
Screen cloth, water outlet screen cloth mesh is not blocked by MBBR filling, it is ensured that the sewage after process passes through water outlet screen cloth, then from water outlet
Mouth flows out.In the process, a small amount of MBBR filling is had through water outlet screen cloth, the time one is grown, these run the MBBR filling meeting of leakage
Water outlet is deposited in, increases outlet resistance, (this water level is less than biochemical water under normal circumstances for the water level in water outlet screen cloth
Position) raise.When the water level in water outlet screen cloth is higher by controlling water level, the valve of outlet aeration tube is automatically controlled by limnimeter
Opening, this part MBBR filling is blown back again in the water of water outlet screen cloth front portion using the aeration of outlet aeration tube, so as to
Effectively prevent these from running the outlet of the MBBR filling of leakage blocking biochemistry pool.When the water level in water outlet screen cloth returns to controlling water level
When following, outlet aeration tube valve is closed, outlet aeration tube stops aeration, system recovery normally runs.
Beneficial effects of the present invention：
1st, can effectively prevent MBBR filling from blocking biochemistry pool outlet using apparatus of the present invention, it is to avoid to occur because of MBBR filling
Sewage overflows impact equipment operation and lose MBBR filling phenomenon that blocking biochemistry pool outlet causes.
2nd, the mesh of water outlet screen cloth is using the rhombus that interior angle is 120 ° and 60 °, and the size of rhombus is according to MBBR filling
Size is tried to achieve according to computing formula, MBBR filling can be down to from the race leak rate of water outlet screen cloth minimum, while again not affecting water outlet
The water permeability of screen cloth.
3rd, existing biochemical treatment sewage pond can be transformed using the present invention, it is also possible to same in newly-built cesspool
Shi Zengshe apparatus of the present invention.
4th, present configuration is simple, easy for installation；Using Automated condtrol, easy to operate, dependable performance.
Description of the drawings
Fig. 1 is the biochemistry pool structural representation using the present invention；
Fig. 2 is the 3 dimensional drawing of MBBR filling in Fig. 1；
Fig. 3 is the mesh diagram of water outlet screen cloth in Fig. 1.
In figure：1-- measurement for biochemical pool wall, 2- outlet, 3- (original) aeration tube, 4- auxiliary aeration tube, 5- striker plate, 6-
Water level in water outlet screen cloth, 7- outlet aeration tube, 8- appendix, 9- valve, 10- water outlet screen cloth, 11- biochemistry pool water level, 12-
MBBR filling.
Specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is certain the biochemistry pool structural representation using the present invention.The sewage that the biochemistry pool is processed is sanitary sewage, biochemical
The length size in pond is calculated according to sewage disposal scale and water quality, is being had in the measurement for biochemical pool wall 1 of its one end
The mouth of a river 2, outlet is the circular port of 300 1000mm of the length of side.The MBBR filling material of interpolation is macromolecular material, and density is
0.99, its shape is as shown in Fig. 2 be hollow cylinder granule, length L of granule and external diameter R are 10mm.The design of biochemistry pool
Water level is 500mm away from pond inner bottom surface.
As shown in figure 1, the apparatus of the present invention for adopting in the biochemistry pool, including being placed in 2 front portion of outlet, longitudinal cross-section in U
The water outlet screen cloth 6 of shape, water outlet screen cloth is attached to outlet place using carbon steel anti-corrosion or stainless steel, the back of water outlet screen cloth
The inner side of measurement for biochemical pool wall 1, its lower end is less than outlet 250mm, and outlet is covered, the base width 350mm of water outlet screen cloth,
The in front upper edge of water outlet screen cloth is higher by biochemical pool water level 11 (design water level) 350mm.Be by MBBR filling from water outlet screen cloth
Run leak rate be down to minimum, while be not in again that water outlet screen cloth is blocked phenomenon, through lot of experiments optimization, the net of water outlet screen cloth
Shape preferably interior angle as shown in Figure 3 in hole hole is respectively 120 ° and 60 °, and (angle can effectively prevent cylindrical particle to be stuck in mesh
On) diamond-shaped meshes；According to the size of MBBR filling granule, length of side a for being computed trying to achieve diamond-shaped meshes is 12.8mm, the rhombus
Mesh is can ensure that in the case of it there is no water outlet screen cloth by the blocking of MBBR filling makes race of the MBBR filling granule from water outlet screen cloth
Leak rate is down to minimum.For avoiding running the MBBR filling blocking outlet of leakage from water outlet screen cloth, install in the bottom surface of U-shaped water outlet screen cloth
Outlet aeration tube 7, outlet aeration tube (has anti-watertight by passing through the appendix 8 of measurement for biochemical pool wall between appendix and pool wall
Envelope) and valve 9 connect with source of the gas.Being located to fixedly mount on inwall more than apopore in measurement for biochemical pool wall 150 ° is bent into pond
Striker plate 5, striker plate made using carbon steel anti-corrosion or stainless steel, and the upper edge of striker plate will be higher by the front of water outlet screen cloth
Upper edge.Near the end of outlet place measurement for biochemical pool wall, three rows are installed in biochemistry pool bottom surface and aeration tube 4 is aided in, aid in aeration
Pipe keeps equidistant between the intrinsic aeration tube 3 of biochemistry pool each other, and makes the aeration head ratio of auxiliary aeration tube 4
The aeration head of aeration tube 3 is higher by 10 15cm, and auxiliary aeration tube and its aeration head are all using finished microporous aeration plate.
The controlling water level (not shown) of the biochemistry pool outlet aeration tube aeration is set as low away from biochemical pool water level 11
100mm.During normal operation, aeration is carried out by the aeration tube and auxiliary aeration tube of at the bottom of pond, when the water level 10 in water outlet screen cloth is higher than
During the controlling water level of setting, illustrate that outlet is blocked by the MBBR filling that leakage is run from water outlet screen cloth, automatic now by limnimeter
These MBBR fillings are blown back out water sieve using the aeration of outlet aeration tube by the valve opening of control outlet aeration tube again
In the anterior water of net, prevent these from running the outlet of the MBBR filling of leakage blocking biochemistry pool.
Claims (3)
1. a kind of prevent MBBR filling block biochemistry pool outlet device, it is characterised in that：Including being placed in before outlet (2)
The water outlet screen cloth (6) that portion, longitudinal cross-section take the shape of the letter U, the back of the water outlet screen cloth abuts in the measurement for biochemical pool wall (1) at outlet place
Inner side, and cover outlet, the in front upper edge of water outlet screen cloth is higher by 300 400mm of biochemical pool water level；In water outlet screen cloth
Bottom surface has the outlet aeration tube (7) for connecting by appendix (8) and valve (9) with source of the gas；It is located at out in measurement for biochemical pool wall (1)
On inwall more than water hole, in oriented pond, bending, upper edge are higher by the striker plate (5) on edge on the front of the water outlet screen cloth；In biochemistry
There is the auxiliary aeration tube (4) corresponding with the water outlet screen cloth at the bottom of pond face near the end of outlet place measurement for biochemical pool wall.
2. according to claim 1 prevent MBBR filling block biochemistry pool outlet device, it is characterised in that：Described go out
The preferred adjacent inner corner of the mesh of water sieve net (6) is respectively 120 ° and 60 ° of rhombus, and length of side a of rhombus is calculated by following formula：
A=(0.85R2+0.8L2)^(1/2)
In formula：
The length of L hollow cylinder MBBR filling granule,
The external diameter of R hollow cylinder MBBR filling granule.
3. according to claim 1 and 2 prevent MBBR filling block biochemistry pool outlet device, it is characterised in that：Institute
The aeration head for stating auxiliary aeration tube (4) is higher by 10 15cm than the aeration head of the aeration tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915080.2A CN106430557B (en) | 2016-10-20 | 2016-10-20 | Device for preventing MBBR adds material and blocks up biochemical pond delivery port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915080.2A CN106430557B (en) | 2016-10-20 | 2016-10-20 | Device for preventing MBBR adds material and blocks up biochemical pond delivery port |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106430557A true CN106430557A (en) | 2017-02-22 |
| CN106430557B CN106430557B (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610915080.2A Active CN106430557B (en) | 2016-10-20 | 2016-10-20 | Device for preventing MBBR adds material and blocks up biochemical pond delivery port |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408882A (en) * | 2018-03-30 | 2018-08-17 | 安徽中源锦天环境工程有限公司 | The equipment for preventing the filler in the ponds MBBR from flowing into secondary settling tank |
| CN108439581A (en) * | 2018-03-30 | 2018-08-24 | 安徽中源锦天环境工程有限公司 | The method for preventing secondary settling tank sludge reflux pump from blocking |
| CN109592844A (en) * | 2018-11-14 | 2019-04-09 | 中国神华能源股份有限公司 | A kind of cleaning method of sewage disposal system |
| CN110845017A (en) * | 2019-11-05 | 2020-02-28 | 广州市净水有限公司 | Anti-blocking device and biological purification tank |
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| CN201713379U (en) * | 2010-06-13 | 2011-01-19 | 华南理工大学 | Suspension packing moving bed sewage treatment reactor taking lightweight ceramsite as packing |
| CN102603061A (en) * | 2012-03-07 | 2012-07-25 | 宜兴市金德环保设备有限公司 | Moving bed bio-film reactor |
| CN202465367U (en) * | 2011-11-22 | 2012-10-03 | 桑德集团有限公司 | Biochemical reaction basin for sewage treatment |
| US20140027378A1 (en) * | 2012-07-26 | 2014-01-30 | Anaergia Inc. | Biofilm carrier screen |
| CN104925939A (en) * | 2015-07-15 | 2015-09-23 | 湖北泉盛环保科技有限公司 | Moving bed bio-membrane reactor |
| CN206089188U (en) * | 2016-10-20 | 2017-04-12 | 沈阳建筑大学 | Device for preventing MBBR adds material and blocks up biochemical cell -out mouth of a river |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201713379U (en) * | 2010-06-13 | 2011-01-19 | 华南理工大学 | Suspension packing moving bed sewage treatment reactor taking lightweight ceramsite as packing |
| CN202465367U (en) * | 2011-11-22 | 2012-10-03 | 桑德集团有限公司 | Biochemical reaction basin for sewage treatment |
| CN102603061A (en) * | 2012-03-07 | 2012-07-25 | 宜兴市金德环保设备有限公司 | Moving bed bio-film reactor |
| US20140027378A1 (en) * | 2012-07-26 | 2014-01-30 | Anaergia Inc. | Biofilm carrier screen |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408882A (en) * | 2018-03-30 | 2018-08-17 | 安徽中源锦天环境工程有限公司 | The equipment for preventing the filler in the ponds MBBR from flowing into secondary settling tank |
| CN108439581A (en) * | 2018-03-30 | 2018-08-24 | 安徽中源锦天环境工程有限公司 | The method for preventing secondary settling tank sludge reflux pump from blocking |
| CN109592844A (en) * | 2018-11-14 | 2019-04-09 | 中国神华能源股份有限公司 | A kind of cleaning method of sewage disposal system |
| CN110845017A (en) * | 2019-11-05 | 2020-02-28 | 广州市净水有限公司 | Anti-blocking device and biological purification tank |
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| Publication number | Publication date |
|---|---|
| CN106430557B (en) | 2023-01-31 |
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