CN107973398A - A kind of pusher reaction unit and its cultural method for cultivating aerobic particle mud - Google Patents
A kind of pusher reaction unit and its cultural method for cultivating aerobic particle mud Download PDFInfo
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- CN107973398A CN107973398A CN201711190731.7A CN201711190731A CN107973398A CN 107973398 A CN107973398 A CN 107973398A CN 201711190731 A CN201711190731 A CN 201711190731A CN 107973398 A CN107973398 A CN 107973398A
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- 239000002245 particle Substances 0.000 title claims abstract description 73
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005273 aeration Methods 0.000 claims abstract description 106
- 239000010802 sludge Substances 0.000 claims abstract description 99
- 230000000750 progressive effect Effects 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000001737 promoting effect Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 12
- 238000011068 loading method Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 244000144992 flock Species 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 238000005189 flocculation Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
- 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)
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- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention belongs to sewage aerobic biochemical processing field, is concretely related to a kind of pusher reaction unit and its cultural method for cultivating aerobic particle mud.Its main technical schemes：Reaction vessel interior is made of settling zone, progressive aeration zone and aerobic particle mud Disengagement zone successively according to reaction direction of propulsion, wherein, the bottom of settling zone sets the water distribution system for being used for continuously promoting, progressive aeration zone has separation baffles with settling zone, is rolled into a ball in the sludge that settling zone is formed and crosses over separation baffles with current；Progressive aeration zone bottom sets progressive aerating system, and the aeration head of progressive aerating system is uniformly arranged on progressive aeration zone bottom, and the direction aeration intensity promoted along reaction increases step by step；Aerobic particle mud Disengagement zone sets cone bucket, and cone bucket top connection secondary settling tank, cone bucket lower part is connected with the inlet channel of water distribution system.The push type reaction unit culture aerobic particle mud has the characteristics that the various complicated water quality of adaptation, continuous stream culture effect are good.
Description
Technical field
The invention belongs to sewage aerobic biochemical processing field, is concretely related to a kind of culture aerobic particle mud
Pusher reaction unit and its cultural method.
Background technology
Aerobic biochemical is biochemical wastewater treatment technology commonly used at present, and activated sludge is the main body of aerobic biochemical.But
It is low to there is operation volumetric loading using the aerobic biochemical system of activated sludge process, it is impossible to the shortcomings that synchronous denitrification dephosphorizing, and use
Biomembrane aerobic biochemical system, with coming off, influences the even running of system, it is necessary to replace filler there are the periodic biofilm of filler
With maintenance aerating system.
Aerobic Granular Sludge Technology（Aerobic Granular Sludge, AGS）It is one to grow up in recent decades
Kind novel microbial self-retaining technology, is that the graininess microorganism self-coagulation come is turned out in aerobic sewage disposal system
Body.Compared with traditional active sludge, aerobic particle mud is because of its close structure, settling property is good, processing load is high, shock resistance energy
Power is strong, can synchronous denitrification dephosphorizing, the advantages that sludge bulking is less likely to occur sludge in system and have a good application prospect,
Have become the research hotspot in biochemical wastewater treatment technique.
The key of aerobic particle mud treatment technology is the culture of aerobic particle mud, however, aerobic particle mud is past
Toward being not easily formed, due to operating load change, the change into factors such as system, aeration intensities of poisonous and harmful substance after formation
Change easily solution wadding, this just seriously limits the application of the technology in practice.
In the prior art, CN106927564A discloses a kind of method of aerobic sludge quick particle, and the present invention passes through
Control system F/M ratios, promote aerobic particle mud quick particle, formation sinking speed is fast, Bacterial community enriches aerobic
Grain sludge.
CN102219297A discloses a kind of fast culture process of aerobic particle mud, and this method is reacted in batch-type
Inoculation of activated-sludge in device, sewage is pumped into reactor by the water inlet of reactor bottom, carry out being aerated-precipitate successively-
Draining, wherein flooding time and water discharge time scope are higher than 1.5g/L in 1-120min, sedimentation time 0-15min, organic loading
D, step is intake to be run repeatedly by the cycle in the reactor to step draining, and this method can realize aerobic sludge in 1-2 weeks
Granulating.
CN102153192A discloses a kind of reinforcing method for culturing aerobic granular sludge, and this method is anti-in gas stripping type interval
Answer device（SBAR）Bottom outside symmetrical permanent magnet is installed, inside reactor is produced stable static magnetic field, at the same to
Cotton-shaped aerobic activated sludge is added in SBAR reactors as kind of a mud, carries out the culture of aerobic particle mud, SBAR presses water inlet-exposure
The mode of gas-sedimentation-draining is run, and this method can accelerate the formation of aerobic particle mud.
Although the technical solution of above-mentioned patent realizes the granulating of aerobic sludge, there are the following problems：First,
The waste water for cultivating aerobic particle mud prepares sewage, it is necessary to add all types of nutritive salt using laboratory, adds system
Operating cost, prepare that the waste water difference of sewage and actual treatment is very big, therefore be difficult the change for adapting to condition of water quality；Second,
The equipment that cultural method uses is batch-type or batch reactor, it is impossible in the aerobic aeration pond being widely used or oxidation ditch
Used Deng complete mixing flow or pulling flow type flow reactor；Third, need to set special running unit or reactor in systems
Itself is complicated, cost is high, causes production run to be not sufficiently stable, and what is had can only run under test conditions, it is difficult to be generalized to
Commercial Application.
The content of the invention
It is an object of the invention to provide a kind of propulsion for adapting to various complicated water quality, continuous stream culture aerobic particle mud
Formula reaction unit and its cultural method.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of pusher reaction unit for cultivating aerobic particle mud, it is characterised in that：Reaction vessel interior is promoted according to reaction
Direction is made of settling zone, progressive aeration zone and aerobic particle mud Disengagement zone successively, wherein, the bottom of the settling zone is set
For the water distribution system continuously promoted, the progressive aeration zone has separation baffles with the settling zone, in the settling zone shape
Into sludge roll into a ball and with current cross over the separation baffles；The progressive aeration zone bottom sets progressive aerating system, described progressive
The aeration head of aerating system is uniformly arranged on the progressive aeration zone bottom, and the direction aeration intensity promoted along reacting is step by step
Increase；The aerobic particle mud Disengagement zone sets cone bucket, and the cone bucket top connects secondary settling tank, the cone bucket lower part with it is described
The inlet channel connection of water distribution system.
A kind of above-mentioned additional technical feature for cultivating aerobic particle mud push type reaction unit is formed to further include：
--- the length of the settling zone accounts for the 1/10 to 1/8 of the reaction vessel length；The aerobic particle mud Disengagement zone
Length account for the 1/20 of reaction vessel length；
--- the first flow rate of liquid sensor is set in the settling zone, sets connection to become on the inlet channel of the water distribution system
The water pump of frequency device, the water distribution system are included in the water distributor set in the progressive aeration zone；
--- the progressive aerating system, which includes the aeration consistent with direction of propulsion, to be responsible for, and one end connection of the aeration supervisor is empty
Air compressor, the aeration supervisor are uniformly arranged the number row aeration branch vertical with direction of propulsion in the bottom of the progressive aeration zone
Pipe, the aeration head are uniformly arranged on the pipe shaft of the aeration branch pipe, and the aeration branch pipe front end sets solenoid valve, described
Solenoid valve rear end sets air flow meter, and the solenoid valve is used to control the air mass flow in aeration branch pipe；
--- the cone bucket includes swinging inclined plate, and it is inverted trapezoidal that the swing inclined plate forms longitudinal section with rectangle reaction vessel end
Space, contour axostylus axostyle is fixedly installed in the both sides for swinging inclined plate, and the bearing coordinated with the axostylus axostyle is arranged on described anti-
Answer on the side wall of container, the axostylus axostyle is driven by motor and rotated, and the cone bucket is set respectively at bottom inlet and top exit
Put second, third flow rate of liquid sensor；
--- electric cabinet is further included, the electric cabinet receives the air flow meter and first, second, third flow rate of liquid sensing
The signal of device feedback, instruction is sent from the electric cabinet to the frequency converter, solenoid valve and motor.
Method using above-mentioned pusher reaction unit culture aerobic particle mud is：
Step 1, obtains the BOD loading of the settling zone, according to sludge loading by the sludge concentration of the settling zone
0.1kgBOD/kgMLSS.d is that standard determines to inject the water in reactor by the water distribution system, passes through activated sludge
Gravity is in close contact flock sludge from compression, and passes through self-flocculation, and floc sludge forms the sludge group of loose bulk,
Until sludge group crosses the separation baffles and enters progressive aeration zone；
Step 2, sludge group in the progressive aeration zone is by being gradually increased the side of aeration intensity along reactor direction of propulsion
Formula, ultimately forms closely knit aerobic particle mud structure, the water distribution set by the water distribution system in progressive aeration zone bottom
Device injection maintains the water of sludge activity, and it is 0.1kgBOD/kgMLSS.d to make sludge loading；
Step 3, enters the cone of the aerobic particle mud Disengagement zone in the mud mixture that the progressive aeration zone end is formed
Bucket, rises from its bottom and flows, due to the current difference of the cone bucket bottom and top, floc sludge by the cone bucket top into
Enter to secondary settling tank, aerobic particle mud and settling zone is then back to by the bottom of the cone bucket；
Step 4, the floc sludge in the secondary settling tank are back in the settling zone through the water distribution system, the settling zone
Sludge group the floc sludge of reflux is retained to form Sludge Bed；
Repeat step one to four, pusher reaction unit continuous service is until activated sludge all granulates.
The additional technical feature for forming the above-mentioned method using pusher reaction unit culture aerobic particle mud further includes：
--- in the step 1, the upflow velocity of the settling zone is controlled between 0.1-0.3m/h；
--- in the step 2, exposed from water of the settling zone outflow containing sludge group by the progressive aeration zone front end
Gas intensity is 10m3/ ㎡ .h, and as reactor promotes aeration intensity to be gradually increased 25m3/ ㎡ .h；
--- in the step 3, the upflow velocity for the mud mixture for entering the cone bucket bottom is 1.5-2.5m/h,
Upflow velocity is gradually lowered to 0.8-1.25m/h at the top of cone bucket.
A kind of pusher reaction unit and cultural method for cultivating aerobic particle mud provided by the present invention and existing skill
Art is compared, and is had the following advantages：First, due to inside the push type reaction unit according to direction of propulsion successively by settling zone, gradually
Formed into aeration zone and aerobic particle mud Disengagement zone, the bottom of settling zone sets water distribution system, and progressive aeration zone sinks with described
Shallow lake area has separation baffles, and aerobic particle mud Disengagement zone sets cone bucket, its upper part connection secondary settling tank, its underpart and water distribution system
Inlet channel connection, the complete equipment structure setting is simple, and production cost is few；Second, cultivated in the push type reaction unit
Aerobic particle mud, be divided into precipitation, it is progressive aeration, aerobic particle mud separation, reflux and etc., it is good to realize continuous stream culture
Oxygen granule sludge, adapts to various complicated water quality, produces wide adaptation range；It is third, progressive due to being carried out along reactor direction of propulsion
Aeration, easy to formed structure it is more closely knit, not legibility wadding aerobic particle mud；Fourth, the cultural method is for complicated water quality
It is adaptable, the sewage disposal of most types is can be applied to, and it is stable, granule sludge is easily formed, is thick mad
The pattern of the aerobic particle mud operation of formula, it is not necessary to special addition nutritive salt and the special running unit of setting, it is not necessary to special
The interference of other operation factors such as operating load is paid close attention to, and overcomes sequencing batch reactor and batch reactor operation operation
The shortcomings that complicated or automatic control is horizontal more demanding, it is easy to be generalized to industrialized production.
Brief description of the drawings
Fig. 1 is a kind of pusher reaction unit for cultivating aerobic particle mud provided by the invention（It is horizontal）Structural representation
Figure；
Fig. 2 is the overlooking the structure diagram of the progressive aerating system in the progressive aeration zone of push type reaction unit；
Fig. 3 is another structure partial signal of the cone bucket in the push type reaction unit aerobic particle mud Disengagement zone
Figure；
Fig. 4 is the plan structure partial schematic diagram of cone bucket structure shown in Fig. 3；
Fig. 5 is the process schematic that method for culturing aerobic granular sludge is carried out using the push type reaction unit.
Embodiment
Below in conjunction with the accompanying drawings to it is provided by the present invention it is a kind of cultivate aerobic particle mud propulsion reactor structure and
Its cultural method is described in further detail.
As shown in Figure 1, it is a kind of structure for the pusher reaction unit A for cultivating aerobic particle mud provided by the present invention
Schematic diagram.Form inside the reaction vessel 1 of the push type reaction unit according to reaction direction of propulsion successively by settling zone 11, progressive
Aeration zone 12 and aerobic particle mud Disengagement zone 13 are formed, wherein, the bottom of settling zone 11 sets the water distribution for being used for continuously promoting
System 111, progressive aeration zone 12 have separation baffles 2 with settling zone 11, roll into a ball in the sludge that settling zone 11 is formed and are crossed over current
Separation baffles 2；Progressive 12 bottom of aeration zone sets progressive aerating system 121, and the aeration head 1211 of progressive aerating system 121 is uniform
Progressive 12 bottom of aeration zone is arranged at, and the direction aeration intensity promoted along reaction increases step by step；Aerobic particle mud separates
Area 13 sets cone bucket 131,131 top of cone bucket connection secondary settling tank 3,131 lower part of cone bucket and the inlet channel 1111 of water distribution system 111
Connection.
--- in order to realize the reaction effect in settling zone 11, progressive aeration zone 12 and aerobic particle mud Disengagement zone 13,
The trizonal ratio of reasonable distribution, the length of above-mentioned settling zone 11 account for the 1/10 to 1/8 of 1 length of reaction vessel；Aerobic grain
The length of sludge Disengagement zone 13 accounts for the 1/20 of 1 length of reaction vessel；
--- in order to preferably promote activated sludge to precipitate, by the flock sludge that autoflocculation is formed by gravity from compression ratio
Relatively closely contact, the first flow rate of liquid sensor 112, the inlet channel of water distribution system 111 are set in above-mentioned settling zone 11
The water pump 114 of connection frequency converter 113 is set on 1111, i.e., changes the power of water pump 114 by frequency converter 113, makes settling zone 11
Upflow velocity control between 0.1-0.3m/h, can effectively maintain sludge activity, be easy to floc sludge and form loose, bulk
Sludge group, consequently facilitating into progressive aeration zone 12；
--- as shown in Fig. 2, in order to realize in progressive aeration zone 12 with reaction direction of propulsion, the aeration intensity of aeration head 1211
It is gradually increased, above-mentioned progressive aerating system 121 includes the aeration supervisor 1212 consistent with direction of propulsion, and aeration is responsible for the one of 1212
End connection air compressor 1213, aeration supervisor 1212 are uniformly arranged vertical with direction of propulsion in the bottom of progressive aeration zone 12
Number row's aeration branch pipe 1214, aeration head 1211 are uniformly arranged on the pipe shaft of aeration branch pipe 1214, and 1214 front end of aeration branch pipe is set
Solenoid valve 1215 is put, air flow meter 1216 is set in 1215 rear end of solenoid valve, solenoid valve 1215 is used to control aeration branch pipe
Air mass flow in 1214；
--- it is 10m3/ ㎡ to flow out the sewage containing sludge group by progressive 12 front end aeration intensity of aeration zone from settling zone 11
.h, and as reaction promotes, the aeration intensity of progressive 12 end of aeration zone is progressive to be increased to 25m3/ ㎡ .h, aeration intensity by
Level, which increases, to be conducive to the loose aerobic particle mud of progressive 12 leading portion of aeration zone legibility is not wadded a quilt with cotton, progressive 12 back segment of aeration zone it is good
The structure of oxygen Granular sludge formation densification, pusher reaction unit end can also be fitted according to progressive 12 dissolved oxygen concentration of aeration zone
When reducing aeration intensity, to save power consumption, this formation to aerobic particle mud is substantially without side-effects；
--- as shown in Figure 3, Figure 4, above-mentioned cone bucket 131 includes swinging inclined plate 1311, swings inclined plate 1311 and rectangle reaction vessel 1
End forms the space that longitudinal section is inverted trapezoidal, and contour axostylus axostyle 1312 is fixedly installed in the both sides for swinging inclined plate 1311, with axostylus axostyle
1312 bearings 1313 coordinated are arranged on the side wall 1314 of reaction vessel 1, and axostylus axostyle 1312 drives rotation by motor 1315, cone
Bucket 131 sets second, third flow rate of liquid sensor respectively at bottom inlet and top exit（1316、1317）, that is, pass through
Second, third flow rate of liquid sensor（1316、1317）Above-mentioned flow velocity is grasped, 1312 turns of axostylus axostyle is driven by motor 1315
It is dynamic, swing swing inclined plate 1311 to adjust the area of 131 bottom inlet of cone bucket and top exit, make to enter 131 bottom of cone bucket
The upflow velocity of the mud mixture in portion is 1.5-2.5m/h, and 131 top upflow velocity of cone bucket is gradually lowered to 0.8-1.25m/
H, so has the floc sludge and water of smaller density, enters secondary settling tank 3, aerobic particle mud is directly from 131 bottom of cone bucket
It is back in the settling zone 11 of reaction vessel 1, such aerobic particle mud will not be lost in because of being taken away by outputted aerobic water, be completed
The a cycle of continuous-flow aerobic granular sludge culture；
This push type reaction unit further includes electric cabinet（Do not indicated in attached drawing）, electric cabinet receives air flow meter 1216 and the
First, second, third flow rate of liquid sensor（112、1316、1317）The signal of feedback, and to frequency converter 113, solenoid valve 1215
Instruction is sent with motor 1315, i.e. air flow meter 1216 feeds back the air mass flow in aeration branch pipe 1214, and electric cabinet passes through
The size for adjusting each solenoid valve 1215 increases aeration by force step by step to reach the aeration head 1211 being located in progressive aeration zone 12
The purpose of degree；Upflow velocity in first flow rate of liquid sensor 112 feedback settling zone 11, electric cabinet is adjusted to be connected with water pump 114
The frequency converter 113 connect has obtained predetermined upflow velocity；Secondth, second liquid sensor detects 131 bottom inlet of cone bucket respectively
With the upflow velocity at top exit, electric cabinet swings 1312 turns of the axostylus axostyle of inclined plate 1311 by controlling motor 1315 to drive
It is dynamic, the water-outlet area of 131 bottom inlet of cone bucket and top exit is adjusted, realizes aerobic particle mud effect separated with floc sludge
Fruit.
As shown in figure 5, it is using the cultural method that above-mentioned pusher reaction unit carries out aerobic particle mud：
Step 1 a, BOD loading is obtained by the sludge concentration of settling zone 11, is mark according to sludge loading 0.1kgBOD/kgMLSS.d
The water in reaction vessel 1 is accurately injected by water distribution system 111 surely, makes flock dirty from compression by the gravity of activated sludge
Mud is in close contact, and passes through self-flocculation, and floc sludge forms the sludge group of loose bulk, until separation gear is crossed by sludge group
Plate 2 enters progressive aeration zone 121；
Step 2 b, sludge group in progressive aeration zone 12 is by being gradually increased the mode of aeration intensity along reaction direction of propulsion, most
End form is into closely knit aerobic particle mud structure, the water distributor set by water distribution system 111 in progressive 121 bottom of aeration zone
1112 injections maintain the water of sludge activity, and it is 0.1kgBOD/kgMLSS.d to make sludge loading；
Step 3 c, enters the cone bucket of aerobic particle mud Disengagement zone 13 in the mud mixture that progressive 12 end of aeration zone is formed
131, rise from its bottom and flow, due to the current difference of 131 bottom of cone bucket and top, floc sludge by cone bucket 131 top into
Enter to secondary settling tank 3, aerobic particle mud and settling zone 11 is then back to by the bottom of cone bucket 131；
Step 4 d, the floc sludge in secondary settling tank 3 are back in settling zone 11 through water distribution system 111, the sludge group of settling zone 11
The floc sludge of reflux is retained to form Sludge Bed；
One a of repeat step to step 4 d, pusher 1 continuous service of reaction vessel is until activated sludge all granulates.
--- in order to preferably promote activated sludge to precipitate, pressed certainly by gravity by the flock sludge that autoflocculation is formed
Contracting, which is compared, to be closely contacted, and in one a of above-mentioned steps, the upflow velocity of settling zone 11 is controlled between 0.1-0.3m/h, you can
Effectively to maintain sludge activity, it is easy to floc sludge and forms loose, the sludge group of bulk, consequently facilitating into progressive aeration zone
12；
--- in two b of above-mentioned steps, flow out the sewage containing sludge group from settling zone 11 and exposed by progressive 12 front end of aeration zone
Gas intensity is 10m3/ ㎡ .h, and as reaction promotes aeration intensity to be gradually increased 25m3/ ㎡ .h, aeration intensity adds step by step
Being conducive to the loose aerobic particle mud of progressive 12 leading portion of aeration zone greatly, legibility is not wadded a quilt with cotton, aerobic of progressive 12 back segment of aeration zone
Grain sludge forms the structure of densification, and pusher 1 end of reaction vessel can also be appropriate according to progressive 12 dissolved oxygen concentration of aeration zone
Aeration intensity is reduced, to save power consumption, this formation to aerobic particle mud is substantially without side-effects；
--- in three c of above-mentioned steps, the upflow velocity for the mud mixture for entering 131 bottom of cone bucket is 1.5-2.5m/h,
131 top upflow velocity of cone bucket is gradually lowered to 0.8-1.25m/h, so has the floc sludge and water of smaller density, enters
To secondary settling tank 3, aerobic particle mud is directly back in the settling zone 11 of reaction vessel 1 from 131 bottom of cone bucket, so aerobic
Grain sludge will not be lost in because of being taken away by outputted aerobic water, complete a cycle of continuous-flow aerobic granular sludge culture；
During experiment, there is more a small amount of loose granule sludge in whole reaction vessel 1 within first day, continuous culture 4-5 days
Afterwards, occurs more discrete particles sludge in reaction vessel 1, the color of sludge is yellowish-brown, this period sludge form is by general
Logical activated sludge changes to granulating.Within the subsequent time, granule sludge constantly largely occurs, grows up, and settling property continues
Improve, volume, quality also constantly increase.Form that settling property is preferable cotton-shaped and part after operation 10 days, in reaction vessel 1
Grain sludge.The continuously operation one month or so of pusher reaction unit, ordinary activated sludge almost realizes granulating.
The cultural method of aerobic particle mud of the present invention, only need to can also will more in complete mixing flow formula reactor application
A complete mixing flow reactor series operation.
Claims (10)
- A kind of 1. pusher reaction unit for cultivating aerobic particle mud, it is characterised in that：Reaction vessel interior is pushed away according to reaction It is made of successively settling zone, progressive aeration zone and aerobic particle mud Disengagement zone into direction, wherein, the bottom of the settling zone is set The water distribution system for continuously promoting is put, the progressive aeration zone has separation baffles with the settling zone, in the settling zone The sludge of formation is rolled into a ball crosses over the separation baffles with current；The progressive aeration zone bottom sets progressive aerating system, it is described gradually Aeration head into aerating system is uniformly arranged on the progressive aeration zone bottom, and along the direction aeration intensity that reaction promotes by Level increase；The aerobic particle mud Disengagement zone sets cone bucket, and the cone bucket top connects secondary settling tank, the cone bucket lower part and institute State the inlet channel connection of water distribution system.
- A kind of 2. pusher reaction unit for cultivating aerobic particle mud according to claim 1, it is characterised in that：It is described The length of settling zone accounts for the 1/10 to 1/8 of reaction vessel length；The length of aerobic particle mud Disengagement zone accounts for reaction vessel length 1/20.
- A kind of 3. pusher reaction unit for cultivating aerobic particle mud according to claim 1, it is characterised in that：It is described First flow rate of liquid sensor is set in settling zone, the water pump of connection frequency converter is set on the inlet channel of the water distribution system, The water distribution system is included in the water distributor set in the progressive aeration zone.
- A kind of 4. pusher reaction unit for cultivating aerobic particle mud according to claim 1, it is characterised in that：It is described Progressive aerating system, which includes the aeration consistent with direction of propulsion, to be responsible for, one end connection air compressor of the aeration supervisor, institute State aeration supervisor and the number row aeration branch pipe vertical with direction of propulsion, the aeration are uniformly arranged in the bottom of the progressive aeration zone Head is uniformly arranged on the pipe shaft of the aeration branch pipe, and the aeration branch pipe front end sets solenoid valve, in the solenoid valve rear end Air flow meter is set, and the solenoid valve is used to control the air mass flow in aeration branch pipe.
- 5. a kind of pusher reaction unit for cultivating aerobic particle mud according to any one of claims 1 to 4, its feature exist In：The cone bucket includes swinging inclined plate, and the inclined plate that swings forms the sky that longitudinal section is inverted trapezoidal with rectangle reaction vessel end Between, contour axostylus axostyle is fixedly installed in the both sides for swinging inclined plate, and the bearing coordinated with the axostylus axostyle, which is arranged on the reaction, to be held On the side wall of device, the axostylus axostyle is driven by motor and rotated, and the cone bucket sets the respectively at bottom inlet and top exit 2nd, the 3rd flow rate of liquid sensor.
- A kind of 6. pusher reaction unit for cultivating aerobic particle mud according to claim 5, it is characterised in that：Also wrap Electric cabinet is included, the electric cabinet receives the letter of the air flow meter and first, second, third flow rate of liquid sensor feedback Number, send instruction from the electric cabinet to the frequency converter, solenoid valve and motor.
- 7. a kind of pusher reaction unit using described in claim 1 carries out the cultural method of aerobic particle mud, its feature It is, comprises the following steps：Step 1, obtains the BOD loading of the settling zone, according to sludge loading by the sludge concentration of the settling zone 0.1kgBOD/kgMLSS.d is that standard determines to inject the water in reactor by the water distribution system, passes through activated sludge Gravity is in close contact flock sludge from compression, and passes through self-flocculation, and floc sludge forms the sludge group of loose bulk, Until sludge group crosses the separation baffles and enters progressive aeration zone；Step 2, sludge group in the progressive aeration zone is by being gradually increased the side of aeration intensity along reactor direction of propulsion Formula, ultimately forms closely knit aerobic particle mud structure, the water distribution set by the water distribution system in progressive aeration zone bottom Device injection maintains the water of sludge activity, and it is 0.1kgBOD/kgMLSS.d to make sludge loading；Step 3, enters the cone of the aerobic particle mud Disengagement zone in the mud mixture that the progressive aeration zone end is formed Bucket, rises from its bottom and flows, due to the current difference of the cone bucket bottom and top, floc sludge by the cone bucket top into Enter to secondary settling tank, aerobic particle mud and settling zone is then back to by the bottom of the cone bucket；Step 4, the floc sludge in the secondary settling tank are back in the settling zone through the water distribution system, the settling zone Sludge group the floc sludge of reflux is retained to form Sludge Bed；Repeat step one to four, pusher reaction unit continuous service is until activated sludge all granulates.
- 8. the cultural method of aerobic particle mud according to claim 2, it is characterised in that：In the step 1, institute The upflow velocity for stating settling zone is controlled between 0.1-0.3m/h.
- 9. the cultural method of aerobic particle mud according to claim 2, it is characterised in that：In the step 2, from The water of the settling zone outflow containing sludge group is 10m3/ ㎡ .h by the progressive aeration zone front end aeration intensity, and with Reactor promotes aeration intensity to be gradually increased 25m3/ ㎡ .h.
- 10. the cultural method of aerobic particle mud according to claim 2, it is characterised in that：In the step 3, into The upflow velocity entered to the mud mixture of the cone bucket bottom is 1.5-2.5m/h, and cone bucket top upflow velocity is gradually lowered to 0.8-1.25m/h。
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