CN201809218U - Three-dimensional grading aeration biofilter - Google Patents
Three-dimensional grading aeration biofilter Download PDFInfo
- Publication number
- CN201809218U CN201809218U CN2010205554148U CN201020555414U CN201809218U CN 201809218 U CN201809218 U CN 201809218U CN 2010205554148 U CN2010205554148 U CN 2010205554148U CN 201020555414 U CN201020555414 U CN 201020555414U CN 201809218 U CN201809218 U CN 201809218U
- Authority
- CN
- China
- Prior art keywords
- water
- back flushing
- layer
- pond
- graded stuffing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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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
Abstract
The utility model provides a three-dimensional grading aeration biofilter comprising a biofilter body, filler layers, an effluent groove, a back wash drain tank and an air distribution pipe network, wherein one side of the upper part of the biofilter body is provided with the effluent groove; one side of the effluent groove is provided with an effluent groove baffle plate; the other side of the upper part of the biofilter body is provided with the back wash drain tank one side of which is provided with a back wash baffle plate; the bottom of the filter body is provided with a water inlet and a back wash water inlet; the filler layers in the filter body are successively a non-grading filler layer, an incomplete grading filler layer and a complete grading filler layer from bottom to top; the air distribution pipe network comprises an air distribution branched passage and a total intake tube, the air distribution branched passage is arranged on the bottom of each filler layer, and the total intake tube is connected with each air distribution branched passage. In the utility model, three filler layers with different grading modes are adopted, and the three filler layers with different grading modes are reasonably matched, therefore system blockage can be effectively prevented, so that the operation period of the system is greatly prolonged, various pollutants in water can be effectively removed, effluent water quality is good, and the processing effect is stable.
Description
Technical field
The utility model relates to a kind of three-dimensional grating BAF that is used for sewage disposal, belongs to technical field of sewage.
Background technology
BAF is a kind of simple and effective sewage treatment process, use the granule filter material of rough porous, filter material surface growth has microbial film, effects such as filtration by filter material surface and absorption, and mechanism such as the oxidation of microorganism, decomposition realize the removal of pollutent.Collection bio-oxidation and suspended substance are retained in one, can save the post precipitation pond, have that processing efficiency height, floor space are little, capital construction and working cost is low, convenient management and capacity of resisting impact load advantages of higher.But its shortcoming is also comparatively outstanding, mainly shows as: adopt the filtrate of single particle size scope, particle diameter is too small, stops up easily, and the excessive then biomass of particle diameter is little, poor processing effect; Because the ramp of heterotrophic bacterium causes system's cycle of operation short, back flushing is frequent; Back flushing efficient is not high, and backwashing time is long, and water consumption is big; Decarburization synchronously, denitrogenate, phosphor-removing effect is relatively poor etc.
Summary of the invention
At the deficiency of existing BAF, the utility model provides the three-dimensional grating BAF of a kind of difficult obstruction, long, easy back flushing of the cycle of operation, good sewage processing effect.
Three-dimensional grating BAF of the present utility model adopts following technical proposals to realize:
This three-dimensional grating BAF comprises pond body, packing layer, effluent trough, back flushing drainage tray and gas distribution pipe network; One side on body top, pond is provided with effluent trough, and a side of effluent trough is provided with the effluent trough flow-stopping plate, and the opposite side on body top, pond is provided with the back flushing drainage tray, and a side of back flushing drainage tray is provided with the back flushing flow-stopping plate; The bottom of pond body is provided with water-in and back flushing water-in; The intravital packing layer in pond is followed successively by not graded stuffing layer, incomplete graded stuffing layer and complete graded stuffing layer from top to bottom; The graded stuffing layer is not made up of the gravel of particle diameter 4cm-5cm; Not exclusively the graded stuffing layer is formed by cinder and 1: 1 by volume mixed of Wingdale, and the cinder particle diameter is 3cm-4cm, and limestone particle size is 3cm-4cm; The graded stuffing layer is formed by hollow brick and 4: 1 by volume mixed of flyash fully, and the hollow brick particle diameter is 2cm-3cm, and the flyash particle diameter is 1cm-2cm; The gas distribution pipe network comprises that the gas distribution that is arranged on each packing layer bottom is in charge of and divides the total inlet pipe of pipe coupling with each gas distribution.
Intravital bottom, pond is at water-in and be not provided with the water distribution cowling panel between the graded stuffing layer.
Operational process of the present utility model is as follows:
Open the effluent trough flow-stopping plate, close the back flushing flow-stopping plate.Sewage enters from pond body bottom water-in, the graded stuffing layer of upwards flowing through successively not, not exclusively graded stuffing layer and graded stuffing layer fully, and effects such as the absorption by biomembranous decomposition and inversion and filler on the packing layer, ion-exchange are purified sewage.By the gas distribution pipe network system is carried out aeration simultaneously,, improve the decarburization and the nitrated ability of system for the microorganism growth metabolism provides competent oxygen.Take the method for intermittent aeration, aeration 1 hour rested 1 hour, and circulation successively so that system intermittently is in aerobic and anaerobic state, improves ammonia nitrogen and total phosphorus removal effect.Water after the purification flows out by top effluent trough overflow.When the head loss in filter tank reaches 2.0m, system is carried out back flushing, close the effluent trough flow-stopping plate, open the back flushing flow-stopping plate, adopt the mode of air purge+air-water associating that system is carried out back flushing.Pressurized air enters the even gas distribution of gas distribution pipe network from gas inlet, with certain intensity air purge for some time, clear water enters from the back flushing water-in afterwards, in uphill process, mix, remove various particles and colloid pollution thing and the aging microbial film that comes off held back in the operational process of biological filter jointly with the big pressurized air of air strength.Excess sludge after the cleaning is discharged by the back flushing effluent trough on body top, pond.
The utility model adopts the packing layer of three kinds of different grating modes, and the reasonably combined use of the packing layer of three kinds of different gradation modes can effectively prevent system jams, its cycle of operation is prolonged greatly, and can effectively remove all contaminations in the water, effluent quality is good, and treatment effect is stable.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: 1, water-in; 2, back flushing water-in; 3, graded stuffing layer not; 4, incomplete graded stuffing layer; 5, complete graded stuffing layer; 6, effluent trough; 7, effluent trough shelves stream plate; 8, back flushing flow-stopping plate; 9, back flushing drainage tray; 10, gas distribution pipe network; 11, water distribution cowling panel; 12, pond body.
Embodiment
As shown in drawings, three-dimensional grating BAF of the present utility model comprises pond body 12, water-in 1, water distribution cowling panel 11, packing layer, effluent trough flow-stopping plate 7, effluent trough 6, back flushing flow-stopping plate 8, back flushing drainage tray 9 and gas distribution pipe network 10.Top one side of pond body 12 is provided with effluent trough 6, and a side of effluent trough 6 is provided with effluent trough flow-stopping plate 7.The top opposite side of pond body 12 is provided with back flushing drainage tray 9, and a side of back flushing drainage tray 9 is provided with back flushing flow-stopping plate 8.The bottom of pond body 12 is provided with water-in 1 and back flushing water-in 2.Packing layer in the pond body 12 is followed successively by not graded stuffing layer 3, incomplete graded stuffing layer 4 and complete graded stuffing layer 5 from top to bottom.The thickness of graded stuffing layer 3 is not 0.6m, is made up of the gravel of particle diameter 4-5cm; Not exclusively the thickness of graded stuffing layer 4 is 1.2m, mix by cinder and Wingdale, and cinder particle diameter 3cm-4cm, limestone particle size 3-4cm, the volume ratio of cinder and Wingdale is 1: 1; Graded stuffing layer 5 thickness are 1.6m fully, mix by hollow brick and flyash, and hollow brick particle diameter 2-3cm, flyash particle diameter 1-2cm, the volume ratio of hollow brick and flyash is 4: 1.Gas distribution pipe network 10 comprises that the gas distribution that is arranged on each packing layer bottom is in charge of and total inlet pipe.Bottom in the pond body 12 is at water-in 1 and be not provided with water distribution cowling panel 11 between the graded stuffing layer 3.
The not graded stuffing layer of lower floor is made up of the gravel of particle diameter 4-5cm, and physical strength is big, can play the good supporting effect, and the space is big and even simultaneously, is beneficial to current and disperses, and improves the water environment capacity in filter tank, prolongs its cycle of operation; The Al that gravel contains
2O
3, Fe
2O
3, composition such as CaO, can tentatively remove the part pollutent in the water.The incomplete grating layer in middle layer was mixed by cinder and Wingdale in 1: 1 by volume.Cinder has flourishing hole, huge surface-area and certain mechanical strength, and the adsorption filtration effect is strong, is beneficial to biofilm and the growth of microorganism; Wingdale can combine with phosphate radical, and phosphor-removing effect is good.The particle diameter of this layer filler is little than lower floor, but takes the mode of incomplete grating, can prevent effectively that filler from stopping up, and obtain pollutant removal preferably.The complete graded stuffing layer on upper strata was mixed by hollow brick and flyash in 4: 1 by volume.The flyash main component is SiO
2, Al
2O
3, CaO, Fe
2O
3, pore texture prosperity and specific surface area are big, and the biofilm and the growth and breeding that can be microorganism provide good condition, also can remove pollutants in sewage matter by effects such as absorption, ion-exchange, filtrations simultaneously; The hollow brick specific surface area is big, and contains a high proportion of SiO
2, Al
2O
3, CaO, Fe
2O
3Deng oxide compound, can combine with the phosphor in sewage acid ion at filling surface and form precipitation, phosphor-removing effect is particularly outstanding.
The operational scheme that the three-dimensional grating BAF of the utility model is disposed of sewage is as follows:
Open effluent trough flow-stopping plate 7, close back flushing flow-stopping plate 8.Sewage enters from bottom water-in 1, by water distribution cowling panel 11 water distributions evenly after, successively through graded stuffing layer 3 not, not exclusively graded stuffing layer 4 and graded stuffing layer 5 fully, effects such as the absorption by biomembranous decomposition and inversion and filler on the packing layer, ion-exchange are purified sewage.Carry out aeration (gas-water ratio 20: 1) by 10 pairs of systems of gas distribution pipe network simultaneously,, improve the decarburization and the nitrated ability of system for the microorganism growth metabolism provides competent oxygen.Take the method for intermittent aeration, aeration 1 hour rested 1 hour, and circulation successively is so that system intermittently is in aerobic and anaerobic state.Water after the purification flows out by 6 overflows of top effluent trough.
When the head loss in filter tank reaches 2.0m, carry out back flushing to system.Close effluent trough flow-stopping plate 7, open back flushing flow-stopping plate 8.Pressurized air enters gas distribution pipe network 10 from gas inlet, even gas distribution, with certain intensity air purge for some time, clear water enters from back flushing water-in 2 afterwards, after water distribution cowling panel 11 is uniformly dispersed, in uphill process, mix, remove various particles and colloid pollution thing and the aging microbial film that comes off held back in the operational process of biological filter jointly with the big pressurized air of air strength.Excess sludge after the cleaning is discharged by the back flushing effluent trough 9 on body top, pond.
System handles low concentration sewage of the present utility model, through 10-15 days biofilms, system's water outlet began to stablize.Hydraulic load 2.8m
3/ (m
2D), the mean concns of water inlet COD, ammonia nitrogen, total nitrogen and total phosphorus is respectively: 80-120mg/L, 20-30mg/L, 40-60mg/L and 3-4mg/L.Gas-water ratio is 3: 1 ~ 2: 1 during operation.Adopt the mode of air purge+air-water associating system to be carried out back flushing, fs gas flushing intensity 16 ~ 19L/ (m
2S), flush time 5 ~ 7min; Subordinate phase gas flushing intensity 16 ~ 19L/ (m
2S), water backwash rate 12 ~ 14L/ (m
2S), flush time 10 ~ 15min.Clearance to COD, ammonia nitrogen, total nitrogen and total phosphorus is respectively 90%, 98%, 94% and 95%.System's cycle of operation is 1 year, and treatment effect is stable.
The present invention has following characteristics:
(1) operation and backwash resistance are little, are difficult for stopping up, and the cycle of operation is long.
(2) effluent quality is good, and is all better, stable to organic matter and nitrogen and phosphorus removal effect.
(3) adopt efficient gas distribution pipe network, aeration is abundant during operation, is beneficial to the raising treatment effect; Efficiently quick during backwash, energy consumption is low.
(4) used fill source is extensive, and is with low cost, is convenient to large-scale promotion application.
Claims (2)
1. a three-dimensional grating BAF comprises pond body, packing layer, effluent trough, back flushing drainage tray and gas distribution pipe network; It is characterized in that: a side on body top, pond is provided with effluent trough, and a side of effluent trough is provided with the effluent trough flow-stopping plate, and the opposite side on body top, pond is provided with the back flushing drainage tray, and a side of back flushing drainage tray is provided with the back flushing flow-stopping plate; The bottom of pond body is provided with water-in and back flushing water-in; The intravital packing layer in pond is followed successively by not graded stuffing layer, incomplete graded stuffing layer and complete graded stuffing layer from top to bottom; The graded stuffing layer is not made up of the gravel of particle diameter 4cm-5cm; Not exclusively the graded stuffing layer is formed by cinder and 1: 1 by volume mixed of Wingdale, and the cinder particle diameter is 3cm-4cm, and limestone particle size is 3cm-4cm; The graded stuffing layer is formed by hollow brick and 4: 1 by volume mixed of flyash fully, and the hollow brick particle diameter is 2cm-3cm, and the flyash particle diameter is 1cm-2cm; The gas distribution pipe network comprises that the gas distribution that is arranged on each packing layer bottom is in charge of and divides the total inlet pipe of pipe coupling with each gas distribution.
2. three-dimensional grating BAF according to claim 1 is characterized in that: intravital bottom, described pond is at water-in and be not provided with the water distribution cowling panel between the graded stuffing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205554148U CN201809218U (en) | 2010-10-11 | 2010-10-11 | Three-dimensional grading aeration biofilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205554148U CN201809218U (en) | 2010-10-11 | 2010-10-11 | Three-dimensional grading aeration biofilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201809218U true CN201809218U (en) | 2011-04-27 |
Family
ID=43892157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205554148U Expired - Lifetime CN201809218U (en) | 2010-10-11 | 2010-10-11 | Three-dimensional grading aeration biofilter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201809218U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010096A (en) * | 2010-10-11 | 2011-04-13 | 山东大学 | Three-dimensional graded aerated biological filter |
| CN108408881A (en) * | 2018-03-19 | 2018-08-17 | 包头钢铁（集团）有限责任公司 | It is a kind of using metallurgical solid waste as the biological aerated filter of filtrate |
| CN110950496A (en) * | 2019-12-12 | 2020-04-03 | 福建省农业科学院农业工程技术研究所 | Pig farm excrement aerobic treatment device and working method thereof |
-
2010
- 2010-10-11 CN CN2010205554148U patent/CN201809218U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010096A (en) * | 2010-10-11 | 2011-04-13 | 山东大学 | Three-dimensional graded aerated biological filter |
| CN108408881A (en) * | 2018-03-19 | 2018-08-17 | 包头钢铁（集团）有限责任公司 | It is a kind of using metallurgical solid waste as the biological aerated filter of filtrate |
| CN110950496A (en) * | 2019-12-12 | 2020-04-03 | 福建省农业科学院农业工程技术研究所 | Pig farm excrement aerobic treatment device and working method thereof |
| CN110950496B (en) * | 2019-12-12 | 2022-05-17 | 福建省农业科学院农业工程技术研究所 | Pig farm excrement aerobic treatment device and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110427 Effective date of abandoning: 20120307 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110427 Effective date of abandoning: 20120307 |