CN110330099A - A kind of method for culturing aerobic granular sludge and culture apparatus - Google Patents
A kind of method for culturing aerobic granular sludge and culture apparatus Download PDFInfo
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- CN110330099A CN110330099A CN201910750068.4A CN201910750068A CN110330099A CN 110330099 A CN110330099 A CN 110330099A CN 201910750068 A CN201910750068 A CN 201910750068A CN 110330099 A CN110330099 A CN 110330099A
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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
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The present invention relates to a kind of method for culturing aerobic granular sludge, after seed sludge is placed in reactor, waste water and 20~25h of empty exposure are passed through into the reactor, then make the reactor according to water inlet-aeration-precipitating-draining sequence cycling service, until mature aerobic particle mud is formed, wherein, flooding time is 5~8min, aeration time is 337~347min, and the sedimentation time is 5~15min, and water discharge time is 2~3min.The method for culturing aerobic granular sludge can effectively shorten the incubation time of aerobic particle mud.The invention further relates to the aerobic particle mud culture apparatus that one kind can run above-mentioned method for culturing aerobic granular sludge.
Description
Technical field
Aerobic particle mud training the present invention relates to technical field of sewage, in particular in a kind of sewage disposal process
The method of supporting and culture apparatus.
Background technique
Compared with traditional activated sludge, aerobic particle mud has the advantage that (1) is compact-sized, can resist
Malicious harmful substance, settling property is good, microorganism concn is high, is able to bear high organic loading and the impact of variation water quality bring；(2)
Aerobic particle mud is the microorganism group by a variety of different function at having while the ability of denitrogenation dephosphorizing.
Current aerobic granular sludge reactor uses cotton-shaped activated sludge for seed sludge, the culture of aerobic particle mud
Time, longer incubation time brought problems to the practical application of aerobic particle mud, such as transports generally at 3 months or more
Effluent quality can not be up to standard etc. in row increased costs, incubation, some enterprises using add induction core or divalent metal from
The mode of son accelerates the granulating process of floc sludge, however its effect is unsatisfactory.
Therefore, how to realize that the fast culture of aerobic particle mud is still those skilled in the art's urgent need to resolve
Technical problem.
Summary of the invention
An object of the present invention is to provide a kind of method for culturing aerobic granular sludge, so as to effectively improve aerobic
The culture speed of grain sludge.
It is a further object of the present invention to provide a kind of aerobic grains that can be realized above-mentioned method for culturing aerobic granular sludge
Culturing sludge device.
In order to achieve the above objectives, method for culturing aerobic granular sludge provided by the invention are as follows:
After seed sludge is placed in reactor, it is passed through waste water and 20~25h of empty exposure in Xiang Suoshu reactor, then makes institute
Reactor is stated according to water inlet-aeration-precipitating-draining sequence cycling service, until mature aerobic particle mud is formed,
In, flooding time be 5~8min, aeration time be 337~347min, the sedimentation time be 5~15min, water discharge time be 2~
3min。
Preferably, the seed sludge is the mud cake being derived from after sewage treatment plant's dehydration, water content is 75%~
85%.
Preferably, the COD of the waste water is 100~1000mg/L, 10~65mg/L of total nitrogen, 5~7mg/L of total phosphorus.
Preferably, the every primary water inlet-aeration-precipitating-draining process of completion of the reactor is a cycle of operation,
And the reactor runs 4 periods daily, the runing time in each period is 6h.
Preferably, with the increase of the cycle of operation, the sedimentation time is gradually reduced by 15min to 5min.
Preferably, the 1st~7 day, the sedimentation time was 15min；8th~15 day, the sedimentation time was 10min, the
16~22 days, the sedimentation time was 7min, and the 22nd~30 day, the sedimentation time was 5min.
Preferably, the gas upflow velocity of the reactor aeration phase is 0.42~1.07cm/s, and bleeding stage changes
Water ratio is 50%.
Disclosed in this invention aerobic particle mud culture apparatus, including column AGS reactor, intake pump, draining pump,
Aerating system and control system, the draining pump are connected to the middle part of the column AGS reactor, the intake pump and the column
The link position of shape AGS reactor is higher than the draining pump, after seed sludge is placed in reactor, the control system control
The intake pump is pumped into waste water and the first preset time of empty exposure, then the control system control into the column AGS reactor
The reactor is made according to water inlet-aeration-precipitating-draining sequence cycling service, until mature aerobic particle mud is formed,
Wherein, flooding time be 5~8min, aeration time be 337~347min, the sedimentation time be 5~15min, water discharge time be 2~
3min。
Preferably, the aerating system includes connected air compressor, gas flowmeter, check-valves and the aeration of concatenation
Disk.
Preferably, the aeration plate is vacantly installed on close to the position of the column AGS reactor bottom, and the aeration
Disk include be adapted to the cavity shape of the AGS reactor aeration ring and excessively it is described aeration ring center and both ends with it is described
The surface of the spreader of aeration ring connection, the aeration ring and the spreader is provided with a plurality of air holes.
Disclosed in this invention method for culturing aerobic granular sludge in, in startup stage, first to being put into seed sludge
Reactor in be passed through waste water and carry out empty exposure, by the first preset time it is empty expose after, microorganism be in starvation, gives birth to
The low microorganism of ability to be deposited to be eliminated, the cohesion ability of itself is continuously improved in the microorganism to survive, it is intended to growth of uniting,
Then water inlet-aeration-precipitating-draining is repeated in a manner of sequence batch, until mature aerobic particle mud is formed, is controlled in incubation
Flooding time processed be 5~8min, aeration time be 337~347min, the sedimentation time be 5~15min, water discharge time be 2~
3min is largely discharged intaking in short-term with the sludge of settling property difference under sedimentation profile in short-term, only the good sludge of settling property
It is saved in reactor, cooperates the aeration of long period that can preliminarily form average grain diameter at 7 days in the aerobic grain of 0.2mm
Sludge is 0.5mm in 30 days formation average grain diameters, and appearance is spherical in shape or spheroid shape, surface are smooth and with clear outer profile
Mature aerobic particle mud.
It can be seen that disclosed in this invention method for culturing aerobic granular sludge, maturation can be turned out by 30 days
Aerobic particle mud substantially reduces the incubation time of aerobic particle mud.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the aerobic particle mud culture apparatus disclosed in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of aeration plate in the embodiment of the present invention；
Fig. 3 is the photo of mature aerobic particle mud in first embodiment；
Fig. 4 is the electron microscope of mature aerobic particle mud formed in first embodiment；
To the effect picture of wastewater treatment when Fig. 5 is aerobic particle mud culture in first embodiment；
Fig. 6 is the electron microscope of mature aerobic particle mud formed in second embodiment；
Fig. 7 is the enlarged drawing of Fig. 6；
Fig. 8 is the grain size distribution of aerobic particle mud when culture was to the 7th day in second embodiment；
Fig. 9 is the grain size distribution of aerobic particle mud when culture was to the 30th day in second embodiment；
To the effect picture of wastewater treatment when Figure 10 is aerobic particle mud culture in second embodiment.
Wherein, 1 is column AGS reactor, and 2 be intake pump, and 3 be draining pump, and 4 be conditioning tank, and 5 be reservoir, and 6 be air
Compressor, 7 be gas flowmeter, and 8 be check-valves, and 9 be aeration plate, and 91 be aeration ring, and 92 be spreader.
Specific embodiment
Core of the invention first is that for a kind of method for culturing aerobic granular sludge, so as to effectively improve aerobic grain
The culture speed of sludge.
Another core of the invention is to provide a kind of aerobic grain that can be realized above-mentioned method for culturing aerobic granular sludge
Culturing sludge device.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
The cultural method of aerobic particle mud disclosed in the embodiment of the present invention, includes the following steps:
1) acquisition of seed sludge
Using the mud cake after sewage treatment plant's dehydration as seed sludge, the water content of this kind of mud cake is 75%~
85%, sludge color is in yellowish-brown, and mud cake is solid close after compression, can provide " nucleus " for initial granular sludge, favorably
In formation granule sludge；
2) empty exposure processing
Seed sludge is placed in reactor, waste water and empty exposure 20~25 hours, waste water are then passed through into reactor
It can voluntarily configure, the waste water in sewage treatment plant's conditioning tank can also be directlyed adopt, the water quality in sewage treatment plant's conditioning tank is more
Complexity, most of is sanitary sewage, contains a small amount of industrial wastewater, and the COD in waste water is 100~1000mg/L, preferably 500mg/
L, total nitrogen content are 10~65mg/L, and preferably 60mg/L, total phosphorus content is 5~7mg/L, preferably 6mg/L, solid suspension
Concentration is 100~500mg/L, and pH value is 7~9；
3) sequencing batch operation
Make reactor according to water inlet-aeration-precipitating-draining sequence cycling service, the primary water inlet-of the every completion of reactor
Aeration-precipitating-draining process is a cycle of operation, and reactor runs four periods daily, and each periodic duty 6 is small
When；Flooding time be 5~8min, aeration time be 337~347min, the sedimentation time be 5~15min, water discharge time be 2~
3min, when each period starts, waste water is intake from the top of reactor, and flooding time is shorter, starts to be aerated after the completion of water inlet, is exposed
Tolerance is controlled in 2~5L/min, i.e. the upflow velocity of gas is maintained in the range of 0.42~1.07cm/s, is produced by aeration plate
Raw a large amount of fine gas bubbles, provide certain upflow velocity and water shearing force, so that sludge is in suspended state and phase mutual friction,
Fine and close mature aerobic particle mud is ultimately formed, the sedimentation time is shorter, and under the shorter sedimentation time, only settling property is good
Sludge is saved, and the precipitating with the progress of incubation and the variation of sludge settling property, in each period
Time is gradually shortened, and is gradually shortened by initial 15min to 5min, sufficiently to eliminate the mud granule of settling property difference, out
The water time is shorter, and next cycle of operation immediately begins to after water outlet, makes reactor sequencing batch operation, until turning out maturation
Aerobic particle mud.
More specific detail is carried out to scheme disclosed in this invention by specific embodiment individually below:
Embodiment 1
Using the mud cake after sewage treatment plant's dehydration as seed sludge, which is in yellowish-brown, moisture content 80%,
Filter cake texture is closely knit after compression；Waste water is derived from sewage treatment plant's conditioning tank, and the COD of waste water is 500mg/L, total nitrogen 60mg/L, always
Phosphorus 6mg/L, solid suspension concentration be 200mg/L, pH value 7.8, height for reactor 1000mm, internal diameter 90mm, effectively
Seed sludge is put into reactor in backward reactor and is passed through waste water by volume 3L, and sky exposes for 24 hours, then when reactor according into
Water-aeration-precipitating-draining sequence operation, 4 cycles of operation of every natural gift, each periodic duty 6h, at the 1st~7 day, water inlet
Time is 6min, aeration time 337min, aeration quantity 2L/min, and sedimentation time 15min, water discharge time 2min are changed
Water rate is 50%, when the 7th day, preliminarily forms aerobic particle mud, average grain diameter 0.2mm in reactor；The 8th~
At 15 days, flooding time 6min, aeration time 342min, aeration quantity 2L/min, sedimentation time 10min, when draining
Between be 2min, the partial size of rate of water exchange 50%, aerobic particle mud is gradually increased, and settling property is further promoted；The 16th~
At 22 days, flooding time 6min, aeration time 345min, aeration quantity 2L/min, sedimentation time 7min, water discharge time
Partial size for 2min, rate of water exchange 50%, aerobic particle mud further increases, at the 23rd~30 day, flooding time 6min,
Aeration time is 347min, aeration quantity 2L/min, sedimentation time 5min, water discharge time 2min, rate of water exchange 50%,
Formed when 30th day, in reactor mature aerobic particle mud, average grain diameter 0.5mm, and partial size 0.5~
Granule sludge between 0.84mm accounts for the 41% of sludge total amount.
As shown in Figures 3 and 4, mature aerobic particle mud is rounded or oval, and there is der Pilz winding on surface, is
Skeleton structure has been built in grain sludge formation, and granule sludge surface is full of hole, is conducive to transmitting and the microorganism of nutriment
Metabolism, oxygen are entered inside particle from granule sludge outer surface by mass transfer, and oxygen gradient, the shape outside granule sludge are formed
At aerobic zone, inside forms simultaneous oxygen or anoxic zone, is conducive to microbial synchronous nitration denitrification, enhances nitrogen removal performance.
In aerobic sludge granular incubation, into after the stable reaction phase, the removal rate of waste water COD is maintained
90%, ammonia nitrogen removal frank maintains 98%, as shown in Figure 5.
Embodiment 2
Using the mud cake after sewage treatment plant's dehydration as seed sludge, which is in yellowish-brown, moisture content 85%,
Filter cake texture is closely knit after compression；Waste water is derived from sewage treatment plant's conditioning tank, and the COD of waste water is 490mg/L, total nitrogen 62mg/L, always
Phosphorus 6mg/L, solid suspension concentration be 320mg/L, pH value 8.2, height for reactor 1000mm, internal diameter 90mm, effectively
Seed sludge is put into reactor in backward reactor and is passed through waste water by volume 3L, and sky exposes 22h, then when reactor according into
Water-aeration-precipitating-draining sequence operation, 4 cycles of operation of every natural gift, at the 1st~7 day, flooding time 5min, aeration
Time is 337min, aeration quantity 5L/min, sedimentation time 15min, water discharge time 3min, rate of water exchange 50%, the 7th
It when, preliminarily form aerobic particle mud in reactor, average grain diameter 0.25mm, as shown in Figure 8；The 8th~15
It when, flooding time 5min, aeration time 342min, aeration quantity 5L/min, sedimentation time 10min, water discharge time
Partial size for 3min, rate of water exchange 50%, aerobic particle mud is gradually increased, and settling property is further promoted；The 16th~22
It when, flooding time 5min, aeration time 345min, aeration quantity 5L/min, sedimentation time 7min, water discharge time is
The partial size of 3min, rate of water exchange 50%, aerobic particle mud further increase, and at the 23rd~30 day, flooding time 5min, expose
The gas time is 347min, aeration quantity 5L/min, sedimentation time 5min, water discharge time 3min, rate of water exchange 50%, the
Mature aerobic particle mud, average grain diameter 0.5mm are formed when 30 days, in reactor, and partial size is in 0.5~0.84mm
Between granule sludge account for the 48% of sludge total amount, as shown in Figure 9.
Fig. 6 is the electron microscope that the mature aerobic particle mud of formation is cultivated in the present embodiment, and Fig. 7 is aerobic grain in Fig. 6
The enlarged drawing of sludge.
In aerobic sludge granular incubation, into after the stable reaction phase, the removal rate of waste water COD is maintained
93.6%, ammonia nitrogen removal frank maintains 98% or more, and as shown in Figure 10, the chronomere d in figure represents number of days.
In addition to this, a kind of aerobic particle mud culture apparatus is also disclosed in the present invention, as shown in fig. 1, including column
Shape AGS reactor 1, intake pump 2, draining pump 3, aerating system and control system, intake pump are used for the waste water pump in conditioning tank 4
Enter in column AGS reactor 1, for the water of column AGS reactor 1 to be expelled in reservoir 5, draining pump 3 connects draining pump
At the middle part (50% height and position of dischargeable capacity) of column AGS reactor 1, the connection of intake pump 2 and column AGS reactor 1
Position is higher than draining pump 3, and after seed sludge is placed in reactor, control system controls intake pump 2 to column AGS reactor 1
It is inside pumped into waste water and the first preset time of empty exposure, then control system controls reactor according to water inlet-aeration-precipitating-draining
Sequence cycling service, until mature aerobic particle mud is formed, wherein flooding time is 5~8min, aeration time 337
~347min, sedimentation time are 5~15min, and water discharge time is 2~3min.
In order to accurately control aeration quantity and waterproof sewage backflow, the aerating system disclosed in the present embodiment includes concatenation phase
Air compressor 6, gas flowmeter 7, check-valves 8 and aeration plate 9 even, as shown in fig. 1, gas flowmeter 7 are preferred
For spinner flowmeter.
Referring to FIG. 2, preventing in order to be aerated aeration plate 9 more uniformly uniformly towards upper and lower, left and right
Only reactor bottom sludgd deposition, the aeration plate 9 in the present embodiment are vacantly arranged close to the position of 1 bottom of column AGS reactor
It sets, and aeration plate 9 includes the inner cavity with column AGS (Aerobic Granular Sludge aerobic particle mud) reactor
The spreader 92 that the aeration ring 91 of shape adaptation and the center of overexposure compression ring 91 and both ends are connected to the aeration ring 91, is aerated ring
91 and the surface of spreader 92 be provided with a plurality of air holes.
The aerobic particle mud culture apparatus is controlled by PLC program, high degree of automation, and operation management is convenient, and
It is energy-saving without agitating device and heating device.
Method for culturing aerobic granular sludge provided by the present invention and culture apparatus are described in detail above.Herein
In apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to sides
Assistant solves method and its core concept of the invention.It should be pointed out that for those skilled in the art, not
, can be with several improvements and modifications are made to the present invention under the premise of being detached from the principle of the invention, these improvement and modification are also fallen into
In the protection scope of the claims in the present invention.
Claims (10)
1. a kind of method for culturing aerobic granular sludge, which is characterized in that after seed sludge is placed in reactor, to the reaction
It is passed through waste water and 20~25h of empty exposure in device, then makes the reactor periodical according to water inlet-aeration-precipitating-draining sequence
Operation, until mature aerobic particle mud is formed, wherein flooding time is 5~8min, and aeration time is 337~347min, is sunk
The shallow lake time is 5~15min, and water discharge time is 2~3min.
2. method for culturing aerobic granular sludge according to claim 1, which is characterized in that the seed sludge is to be derived from dirt
Mud cake after water treatment plant's dehydration, water content are 75%~85%.
3. method for culturing aerobic granular sludge according to claim 2, which is characterized in that the COD of the waste water be 100~
1000mg/L, total nitrogen are 10~65mg/L, and total phosphorus is 5~7mg/L.
4. method for culturing aerobic granular sludge according to claim 3, which is characterized in that the reactor is every to be completed once
Water inlet-aeration-precipitating-draining process is a cycle of operation, and the reactor runs 4 periods, Mei Gezhou daily
The runing time of phase is 6h.
5. method for culturing aerobic granular sludge according to claim 4, which is characterized in that with the increasing of the cycle of operation
Add, the sedimentation time is gradually reduced by 15min to 5min.
6. method for culturing aerobic granular sludge according to claim 5, which is characterized in that the 1st~7 day, when the precipitating
Between be 15min；8th~15 day, the sedimentation time be 10min, the 16th~22 day, the sedimentation time be 7min, the 22nd~
30 days, the sedimentation time was 5min.
7. method for culturing aerobic granular sludge according to claim 6, which is characterized in that the reactor aeration phase
Gas upflow velocity is 0.42~1.07cm/s, and the water ratio that changes of bleeding stage is 50%.
8. a kind of aerobic particle mud culture apparatus, which is characterized in that including column AGS reactor (1), intake pump (2), draining
Pump (3), aerating system and control system, the draining pump (3) is connected to the middle part of the column AGS reactor (1), it is described into
Water pump (2) and the link position of the column AGS reactor (1) are higher than the draining pump (3), are placed in reactor in seed sludge
In after, the control system, which controls, to be pumped into waste water and empty exposes first in intake pump (2) the Xiang Suoshu column AGS reactor (1)
Preset time, then the control system controls the reactor and periodically transports according to water inlet-aeration-precipitating-draining sequence
Row, until mature aerobic particle mud is formed, wherein flooding time is 5~8min, and aeration time is 337~347min, precipitating
Time is 5~15min, and water discharge time is 2~3min.
9. aerobic particle mud culture apparatus according to claim 8, which is characterized in that the aerating system includes concatenation
Connected air compressor (6), gas flowmeter (7), check-valves (8) and aeration plate (9).
10. aerobic particle mud culture apparatus according to claim 9, which is characterized in that the aeration plate (9) is vacantly pacified
Loaded on the position close to column AGS reactor (1) bottom, and the aeration plate (9) includes and the column AGS reactor
(1) center of the aeration ring (91) of cavity shape adaptation and excessively described aeration ring (91) and both ends and the aeration ring (91)
The surface of the spreader (92) of connection, aeration ring (91) and the spreader (92) is provided with a plurality of air holes, with equal around
Even aeration.
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Cited By (3)
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| CN112358134A (en) * | 2020-11-13 | 2021-02-12 | 山东泰山自迩环保科技有限公司 | Aerobic granular sludge-based immersed effluent weir sewage treatment device and method |
| CN114031175A (en) * | 2021-07-17 | 2022-02-11 | 郑州大学 | Method for treating formaldehyde wastewater by using aerobic granular sludge |
| WO2022213619A1 (en) * | 2021-04-08 | 2022-10-13 | 北京城市排水集团有限责任公司 | Method and system for strengthening aerobic granular sludge culture |
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