CN102139952B - Continuous flow air lifting type aerobic granular sludge fluidized bed device for processing difficult degradation waste water - Google Patents
Continuous flow air lifting type aerobic granular sludge fluidized bed device for processing difficult degradation waste water Download PDFInfo
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- CN102139952B CN102139952B CN2011101070972A CN201110107097A CN102139952B CN 102139952 B CN102139952 B CN 102139952B CN 2011101070972 A CN2011101070972 A CN 2011101070972A CN 201110107097 A CN201110107097 A CN 201110107097A CN 102139952 B CN102139952 B CN 102139952B
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Abstract
The invention relates to a continuous flow air lifting type aerobic granular sludge fluidized bed device for processing difficult degradation waste water. The device is characterized in that an water inlet is arranged at the bottom end of an outer ring cylinder and is connected with a constant flow pump by a pipeline and a fluid flowmeter; a sludge discharging opening and an air inlet port are arranged at the side surface of the lower part of the outer ring cylinder; a microporous aeration disc is arranged in the lower part of the outer ring cylinder; the outer ring cylinder is internally sheathed with an air lifting cylinder; an overflow passageway which is larger than the cross sectional area of a flow reducing area by 80% is arranged at the lower part of the air lifting cylinder; a CAFB device is divided into a flow lifting area, a flow reducing area and a three-phase separating area by the air lifting device; and a drain port is arranged at the upper part of the outer ring cylinder. Compared with an SBR (sequencing batch reactor) process, the device uses a continuous shear force for replacing a gaseous phase shearing force in the SRB process so as to reinforce granule aggregation. By using the device, the formation speed of CAFB granules is fast and structure of the CAFB granules is compact; and the device has high processing efficiency. A plurality of independent devices do not need to be arranged for alternate operation; the device has a simple program design and is simple to operate and manage. After testing, mature granules are formed in the fourth day after the device is started; and compared with the SBR reactor, the device shortens working hours by at least 30 to 40 days.
Description
Technical field:
The present invention relates to a kind of waste disposal plant, especially utilize aerobic particle mud to handle the device of waste water difficult for biological degradation.
Background technology:
The research of relevant aerobic particle mud technology starts from eighties of last century nineties, and this technology has characteristics such as the grain pattern of formation is fine and close, settling property is good, biological concentration is high, biota is abundant.Compare with traditional technology, aerobic particle mud technology is waste water difficult for biological degradation such as treatment of high concentration nitrogen phosphorus waste water, heavy metal wastewater thereby and toxicity organic waste water efficiently.Therefore, caused water treatment investigator's extensive concern, be considered to the biological sewage treatment mode that a kind of utmost point has development potentiality about the research of aerobic particle mud.
Granule sludge is the one type of special microbial film that forms through the mikrobe self-cohesion action, and it forms the acting in conjunction that mechanism relates to multiple reactions such as physics, chemistry and biology.The influence factor more complicated that aerobic particle mud forms, it is still not fully aware of to form mechanism.Result of study to intermittent type aerobic particle mud operation process shows, hydraulic detention time (HRT), selects pressure, waste water composition, dissolved oxygen (DO) and hydrodynamic shear etc. all to the material impact that is formed with of aerobic particle mud.Wherein, it is remarkable that the hydrodynamic shear effect forms speed, structure and stability influence to particulate, is considered to granule sludge and forms one of influence factor of most critical.Liu, Tay and Beun etc. find that all shearing force is high more, help the formation of aerobic grain more, help the increase of its biological density and granule strength.It is comparatively responsive that the formation of granule sludge is influenced by shearing force.Tay etc. find that gas speed is 8mms in sequencing batch activated sludge reactor (SBR) when other operational conditions is identical
-1In time, can only be observed and is villous flco, and gas speed is improved most 12mms
-1The time, can form a large amount of granule sludges in a short time.In addition, in suitable scope, shearing force is big more, and the granule sludge form is more regular, and structure is closely knit more.Research shows that hydrodynamic shear can promote the secretion of extracellular polymeric, the cell hydrophobicity is strengthened, thereby help agglomeration of particles.
Although the research to aerobic particle mud reaches its maturity; Yet mostly research and the application about aerobic particle mud is unfolded in sequencing batch activated sludge reactor (SBR) at present, in continuous flow process, cultivates the also rarely seen report of successful research about aerobic particle mud.
Summary of the invention:
The object of the invention is exactly the deficiency to above-mentioned prior art; Provide a kind of easy and simple to handle; Processing efficiency is high; Can the Rapid Realization granule sludge form and the even flow gas stripping type aerobic particle mud fluidized-bed of steady running (Continuous Airlift Fluidized Bed CAFB) handles the waste water difficult for biological degradation device.
The objective of the invention is to realize through following technical scheme:
Even flow gas stripping type aerobic particle mud fluidized bed processing waste water difficult for biological degradation device; Be that bottom by outer shroud tube 7 is provided with water-in 3; And be connected with constant flow pump 1 with liquid meter 2 through pipeline, outer shroud tube 7 lower side are provided with mud discharging mouth 12 and air inlet port, and the outer shroud tube is provided with micro-pore aeration dish 6 in 7 bottoms; Micro-pore aeration dish 6 is connected with air pump 4 through air inlet port, gas meter 5 through pipeline; Be set with gas in the outer shroud tube 7 and carry tube 8, gas is carried the inner bottom part that tube 8 bottoms are fixed on outer shroud tube 7, and the bottom that gas is carried tube 8 is provided with greater than the flow channels of falling stream district cross-sectional area 80%; Gas is carried tube 8 the CAFB device is divided into the up-flow district, falls stream district and three-phase separation area, and the top of outer shroud tube 7 is provided with water port 9 and constitutes.
CAFB device up-flow district I is 1-3 with the surface-area ratio that falls stream district II; Blade diameter length ratio is 1: 12-1: 5; Three-phase separation area II I angle of taper is 45 °-70 °.
CAFB device volumetric loading is 3.5-10.0g (COD)/Ld, and hydraulic detention time is 2-4h, and superficial gas velocity is 12-40mm/s, and least favorable point DO is greater than 2mg/l.
The operation scheme of used water difficult to degradate in the CAFB device is continous way water inlet and water-out manners.
Beneficial effect: the present invention adopts even flow gas stripping type fluidized-bed (CAFB) to handle waste water difficult for biological degradation, and replaces the gas phase shearing force reinforcing particle in the sbr reactor device to assemble with the liquid phase shearing force that continues.Compare with SBR aerobic particle mud technology, it is fast that the CAFB particle forms speed, compact structure, and processing efficiency is high.Need not to be provided with a plurality of monomers and equipment alternate run, programdesign and operational administrative are simpler.Through test, start the 4th day and can form sophisticated particle, shorten 30～40 days man-hours at least than sbr reactor device.
Description of drawings:
Accompanying drawing is: even flow gas stripping type aerobic particle mud fluidized-bed (CAFB) is handled the waste water difficult for biological degradation structure drawing of device.
1 constant flow pump, 2 liquid meters, 3 water-ins, 4 air pumps, 5 gas meters, 6 micro-pore aeration dishes, 7 outer shroud tubes, 8 gas are carried tube, 9 water port, 10 bubbles, 11 granule sludges, 12 mud discharging mouths, I up-flow district, stream district, III three-phase separation area fall in II.
Embodiment:
Do further detailed description below in conjunction with accompanying drawing and embodiment:
Even flow gas stripping type aerobic particle mud fluidized-bed (CAFB) is handled the waste water difficult for biological degradation device; Be that bottom by outer shroud tube 7 is provided with water-in 3; And be connected with constant flow pump 1 with liquid meter 2 through pipeline, outer shroud tube 7 lower side are provided with mud discharging mouth 12 and air inlet port, and the outer shroud tube is provided with micro-pore aeration dish 6 in 7 bottoms; Micro-pore aeration dish 6 is connected with air pump 4 through air inlet port, gas meter 5 through pipeline; Be set with gas in the outer shroud tube 7 and carry tube 8, gas is carried the inner bottom part that tube 8 bottoms are fixed on outer shroud tube 7, and the bottom that gas is carried tube 8 is provided with greater than the flow channels of falling stream district cross-sectional area 80%; Gas is carried tube 8 with being divided into the up-flow district in the outer shroud tube 7, falling stream district and three-phase separation area, and the top of outer shroud tube 7 is provided with water port 9 and constitutes.
CAFB device up-flow district I is 1-3 with the surface-area ratio that falls stream district II; Blade diameter length ratio is 1: 12-1: 5; Three-phase separation area II I angle of taper is 45 °-70 °.
CAFB device volumetric loading is 3.5-10.0g (COD)/Ld, and hydraulic detention time is 2-4h, and superficial gas velocity is 12-40mm/s, and least favorable point DO is greater than 2mg/l.
The operation scheme of used water difficult to degradate in the CAFB device is continous way water inlet and water-out manners.
Embodiment 1:
Even flow gas stripping type aerobic particle mud fluidized-bed (CAFB) is handled the waste water difficult for biological degradation device; Be that bottom by outer shroud tube 7 is provided with water-in 3; And be connected with constant flow pump 1 with liquid meter 2 through pipeline, outer shroud tube 7 lower side are provided with mud discharging mouth 12 and air inlet port, and the outer shroud tube is provided with micro-pore aeration dish 6 in 7 bottoms; Micro-pore aeration dish 6 is connected with air pump 4 through air inlet port, gas meter 5 through pipeline; Be set with gas in the outer shroud tube 7 and carry tube 8, gas is carried the inner bottom part that tube 8 bottoms are fixed on outer shroud tube 7, and the bottom that gas is carried tube 8 is provided with greater than the flow channels of falling stream district cross-sectional area 80%; Gas is carried tube 8 the CAFB device is divided into the up-flow district, falls stream district and three-phase separation area, and the top of outer shroud tube 7 is provided with water port 9 and constitutes.
Handle instance with certain starch wastewater: micro-hole aerator oxygen supply in the CAFB reactor drum that be equipped with the up-flow district I bottom of even flow gas stripping type aerobic particle mud fluidized bed processing waste water difficult for biological degradation device (CAFB reactor drum), muddy water mixed solution in the up-flow district I to the upper reaches; Falling stream district II to dirty, and be back to the up-flow district in the bottom; Three-phase separation area II I, mud, water, gas separate in this district, and gas overflows device, and sludge settling is to falling the stream district, and supernatant is discharged by water port.The operation scheme of used water difficult to degradate in device is continous way water inlet and water-out manners.
Starch production wastewater gets into the CAFB reactor drum behind pretreatment technology.CAFB reactor drum up-flow district is 1.5 with the surface-area ratio of falling the stream district, and blade diameter length ratio is 1: 8, and the three-phase separation area angle of taper is 60 °; The gas superficial flow velocity is 30mm/s in the reactor drum, least favorable point dissolved oxygen (DO) 2.5mg/l, and the reactor design volumetric loading should be 4.0g (COD)/Ld, and the design hydraulic detention time is 2h, and least favorable point DO is greater than 2mg/l.Sludge concentration is 6000mg/l, and sludge age 8d should be 7 ± 1 with pH value in the yellow soda ash conditioned reaction device, and operating temperature is 15 ± 5 ℃.Move the 4th day and promptly can be observed a large amount of macroscopic brown xanchromatic granule sludges, the COD clearance can reach more than 70%, and the CAFB device is stable.
Embodiment 2:
Even flow gas stripping type aerobic particle mud fluidized bed processing waste water difficult for biological degradation device; Be that bottom by outer shroud tube 7 is provided with water-in 3; And be connected with constant flow pump 1 with liquid meter 2 through pipeline, outer shroud tube 7 lower side are provided with mud discharging mouth 12 and air inlet port, and the outer shroud tube is provided with micro-pore aeration dish 6 in 7 bottoms; Micro-pore aeration dish 6 is connected with air pump 4 through air inlet port, gas meter 5 through pipeline; Be set with gas in the outer shroud tube 7 and carry tube 8, gas is carried the inner bottom part that tube 8 bottoms are fixed on outer shroud tube 7, and the bottom that gas is carried tube 8 is provided with greater than the flow channels of falling stream district cross-sectional area 80%; Gas is carried tube 8 the CAFB device is divided into the up-flow district, falls stream district and three-phase separation area, and the top of outer shroud tube 7 is provided with water port 9 and constitutes.
Handle instance with certain paper waste: micro-hole aerator oxygen supply in the CAFB reactor drum that be equipped with the up-flow district I bottom of even flow gas stripping type aerobic particle mud fluidized bed processing waste water difficult for biological degradation device (CAFB), muddy water mixed solution in the up-flow district I to the upper reaches; Falling stream district II to dirty, and be back to the up-flow district in the bottom; Three-phase separation area II I, mud, water, gas separate in this district, and gas overflows device, and sludge settling is to falling the stream district, and supernatant is discharged by water outlet.The operation scheme of used water difficult to degradate in device is continous way water inlet and water-out manners.
CAFB reactor drum up-flow district is 1.6 with the surface-area ratio that falls the stream district, and blade diameter length ratio is 1: 6, and the three-phase separation area angle of taper is 60 °; The gas superficial flow velocity is 35mm/s in the reactor drum; Least favorable point dissolved oxygen (DO) 3.5mg/l, the reactor design volumetric loading should be 3.6g (COD)/Ld, and the design hydraulic detention time is 2.5h; Sludge concentration is 5500mg/l; Sludge age 7d should be 7 ± 1 with pH value in the yellow soda ash conditioned reaction device, and operating temperature is 15 ± 5 ℃.Move the 4th day and promptly can be observed a large amount of macroscopic granule sludges, the COD clearance can reach more than 75%, and the CAFB device is stable.
Embodiment 3:
Even flow gas stripping type aerobic particle mud fluidized bed processing waste water difficult for biological degradation device; Be that bottom by outer shroud tube 7 is provided with water-in 3; And be connected with constant flow pump 1 with liquid meter 2 through pipeline, outer shroud tube 7 lower side are provided with mud discharging mouth 12 and air inlet port, and the outer shroud tube is provided with micro-pore aeration dish 6 in 7 bottoms; Micro-pore aeration dish 6 is connected with air pump 4 through air inlet port, gas meter 5 through pipeline; Be set with gas in the outer shroud tube 7 and carry tube 8, gas is carried the inner bottom part that tube 8 bottoms are fixed on outer shroud tube 7, and the bottom that gas is carried tube 8 is provided with greater than the flow channels of falling stream district cross-sectional area 80%; Gas is carried tube 8 the CAFB device is divided into the up-flow district, falls stream district and three-phase separation area, and the top of outer shroud tube 7 is provided with water port 9 and constitutes.
With certain treatment of dyeing wastewater instance: micro-hole aerator oxygen supply in the CAFB reactor drum that be equipped with the up-flow district I bottom of even flow gas stripping type aerobic particle mud fluidized bed processing waste water difficult for biological degradation device (CAFB), muddy water mixed solution in the up-flow district I to the upper reaches; Falling stream district II to dirty, and be back to the up-flow district in the bottom; Three-phase separation area II I, mud, water, gas separate in this district, and gas overflows device, and sludge settling is to falling the stream district, and supernatant is discharged by water outlet.The operation scheme of used water difficult to degradate in device is continous way water inlet and water-out manners.
CAFB reactor drum up-flow district is 1.8 with the surface-area ratio that falls the stream district, and blade diameter length ratio is 1: 8, and the three-phase separation area angle of taper is 50 °; The gas superficial flow velocity is 32mm/s in the reactor drum; Least favorable point dissolved oxygen (DO) 3.0mg/l, the reactor design volumetric loading should be 4.5g (COD)/Ld, and the design hydraulic detention time is 3h; Sludge concentration is 6500mg/l; Sludge age 7d should be 7 ± 1 with pH value in the yellow soda ash conditioned reaction device, and operating temperature is 15 ± 5 ℃.Move the 4th day and promptly can be observed a large amount of macroscopic granule sludges, the COD clearance can reach more than 68%, and the CAFB device is stable.
Claims (2)
1. even flow gas stripping type aerobic particle mud fluidized bed processing used water difficult to degradate device; It is characterized in that; Be that bottom by outer shroud tube (7) is provided with water-in (3); And be connected with constant flow pump (1) with liquid meter (2) through pipeline, outer shroud tube (7) lower side is provided with mud discharging mouth (12) and air inlet port, and outer shroud tube (7) is provided with micro-pore aeration dish (6) in the bottom; Micro-pore aeration dish (6) is connected with air pump (4) through air inlet port, gas meter (5) through pipeline; Be set with gas in the outer shroud tube (7) and carry tube (8), gas is carried the inner bottom part that tube (8) bottom is fixed on outer shroud tube (7), and the bottom that gas is carried tube (8) is provided with greater than the flow channels of falling stream district cross-sectional area 80%; Gas is carried tube (8) even flow gas stripping type aerobic particle mud fluidizer is divided into up-flow district I, falls stream district II and three-phase separation area II I, and the top of outer shroud tube (7) is provided with water port (9) and constitutes;
Up-flow district I in the outer shroud tube (7) is 1-3 with the surface-area ratio that falls stream district II; Blade diameter length ratio is 1: 12-1: 5; Three-phase separation area II I angle of taper is 45 °-70 °;
Outer shroud tube (7) volumetric loading is 3.5-10.0g (COD)/(Ld), and hydraulic detention time is 2-4h, and superficial gas velocity is 12-40mm/s, and least favorable point DO is greater than 2mg/l.
2. according to the described even flow gas stripping type of claim 1 aerobic particle mud fluidized bed processing used water difficult to degradate device, it is characterized in that the operation scheme of used water difficult to degradate in device is continous way water inlet and water-out manners.
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| CN2011101070972A CN102139952B (en) | 2011-04-28 | 2011-04-28 | Continuous flow air lifting type aerobic granular sludge fluidized bed device for processing difficult degradation waste water |
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| CN2011101070972A CN102139952B (en) | 2011-04-28 | 2011-04-28 | Continuous flow air lifting type aerobic granular sludge fluidized bed device for processing difficult degradation waste water |
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| CN102757130B (en) * | 2012-07-09 | 2015-12-16 | 中国石油大学(华东) | A kind of high sulfur-bearing, containing the biological treatment of phenol waste lye and device |
| CN102886163B (en) * | 2012-09-28 | 2014-07-30 | 宜兴市荣盛达环保有限公司 | Pulsed airlift sludge discharge device |
| CN102838207A (en) * | 2012-10-15 | 2012-12-26 | 兰州理工大学 | Continuous flow aerobe fluidized bed process |
| CN103058361A (en) * | 2013-01-25 | 2013-04-24 | 南海发展股份有限公司 | Biological fluidized bed reactor for removing ammonia nitrogen in high-pollution raw water |
| CN104150589A (en) * | 2014-08-26 | 2014-11-19 | 朱江 | Integrated non-gradient activated sludge sewage treatment device |
| CN107285443A (en) * | 2017-07-28 | 2017-10-24 | 安徽农业大学 | A kind of phosphorus reclaims crystallization reactor |
| CN108046416B (en) * | 2017-11-15 | 2024-01-26 | 南阳理工学院 | Device and system for culturing aerobic granular sludge and method for culturing aerobic granular sludge |
| CN107795003A (en) * | 2017-12-12 | 2018-03-13 | 安徽华骐环保科技股份有限公司 | A kind of microkinetic air lift muddy water constant-current device and its processing method |
| CN109942085B (en) * | 2019-03-20 | 2021-10-08 | 上海交通大学 | Continuous flow upflow type aerobic granular sludge reactor |
| CN109928500B (en) * | 2019-03-20 | 2021-10-08 | 上海交通大学 | Aerobic granular sludge reactor for denitrification and dephosphorization treatment of rural domestic sewage |
| CN113830891A (en) * | 2021-11-03 | 2021-12-24 | 肇庆市鹏凯环保装备有限公司 | Sewage treatment device and method based on aerobic granular sludge process |
| CN114735903B (en) * | 2022-06-13 | 2022-09-02 | 金科环境股份有限公司 | Sewage total nitrogen removal device and operation method thereof |
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| JP2002136988A (en) * | 2000-11-06 | 2002-05-14 | Cosmo Life Kk | Method and apparatus for treating organic wastewater |
| CN100528770C (en) * | 2007-07-13 | 2009-08-19 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Integrative aerobic particle sludge membrane bioreactor sewage treatment method |
| CN101333037A (en) * | 2008-07-01 | 2008-12-31 | 黑龙江科技学院 | Gas-lifting internal circulation intermission aerobic granule sludge reactor and water treatment process thereof |
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