CN107973503A - Integral type granule sludge vulcanizes decalcification device and method - Google Patents
Integral type granule sludge vulcanizes decalcification device and method Download PDFInfo
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F11/00—Treatment of sludge; Devices therefor
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention discloses a kind of integral type granule sludge to vulcanize decalcification device and method.Apparatus main body is made of mud collection area, water distribution area, decalcification area, sulfur district and race way.Mud collection area sets mud collecting chamber and mud guiding tube；Water distribution area sets water inlet pipe and cloth hydroecium；Decalcification area sets granule sludge room and precipitation separation chamber；Sulfur district sets air supply chamber, sulphur grain bed and annular acid storage chamber；Race way sets acid cycle system and mixing fluid circulation.By the effect of sulfur district, the lasting generation of sulfuric acid is realized；By the effect in decalcification area, the continued dissolution of calcium carbonate is realized；By the effect of race way, recycling for sulfuric acid liquid is realized；By the effect of mud collection area, the output of granule sludge after decalcification is realized.Vulcanization production acid is melted into a whole by the present invention with granule sludge decalcification, and apparatus structure is compact；Acid is produced with sulfide-oxidizing enzyme, it is of low cost, sulphur grain bed need to be only aerated, elemental sulfur can be oxidized to sulfuric acid by vulcanization bacterium；Decalcification is dissolved with acid solution, acid amount is controllable, can mitigate granule sludge damage.
Description
Technical field
The present invention relates to a kind of granule sludge decalcification device, more particularly to a kind of integral type granule sludge vulcanization decalcification device
And method.
Background technology
Human lives and production movable rows amplification quantity organic wastewater, cause the water bodys such as China lake, river and coastal waters tight
Heavily contaminated.As the wastewater processing technology of a kind of economical and efficient, UASB, EGSB and IC reactor are widely used at organic wastewater
Reason.Organic wastewater, the particularly universal calcic of industrial organic waste water.During anaerobic bio-treated, organic pollution is converted into
Carbon dioxide, is combined with calcium, produces calcium carbonate, is distributed in granule sludge inside and surface, can be influenced to live by influencing mass transfer
Property.Calcification granule sludge accumulate in reactor, both reduced the dischargeable capacity of device, increase anaerobic digestion engineering into
This, also limit the application of anaerobic digestion techniques.
Anaerobic grain sludge is the natural aggregation of anaerobic digestion microorganism, the efficiency of UASB, EGSB and IC reactor with
Anaerobic grain sludge it is active closely related.Prevent anaerobic grain sludge calcification, promote calcification anaerobic grain sludge decalcification, undoubtedly
Be conducive to keep the function of anaerobic grain sludge, the continuous service of power-assisted high efficiency anaerobic reactor.So far, tackled in engineering
The main means of granule sludge sludge calcification are that chemistry is carried out to waste water except Calcium preconditioning or is increased to calcification particle in reactor
The replacement frequency of sludge, the former needs to add a large amount of medicaments, and the latter requires supplementation with a large amount of highly effective sludges, and cost is higher.Research and development warp
The anti-calcium calcium removal methods of the effective granule sludge that helps, it has also become ensure the task of top priority of anaerobic digestion techniques development.The present invention is with low
The sulphur grain of Lian great Zong is vulcanized by biology as material and produces sulfuric acid, then with sulfuric acid dissolution calcium carbonate, produced acid and measure controllable, decalcification
Product is pollution-free, and processing procedure low cost, has good popularizing application prospect.
The content of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of integral type granule sludge vulcanization decalcification device.
Concrete technical scheme of the present invention is as follows：
Integral type granule sludge vulcanizes decalcification device, and apparatus main body is divided into mud collection area, water distribution area, decalcification from the bottom to top
Area and sulfur district, race way is independently of apparatus main body, for connecting water distribution area and decalcification area and water distribution area and sulfur district；Collect mud
Area is sequentially connected from top to bottom by mud guiding tube leads muddy water pump, water check valve and back taper mud collecting chamber bottom；Water distribution area is from top to bottom
If water inlet pipe and water distributor, it is provided with water inlet pipe into water water pump；Several pH detection mouths, decalcification are provided with decalcification area side wall
Area is divided into granule sludge decalcification reative cell and precipitation separation chamber from top to bottom, and precipitation sets separator for mud and water, mud above separation chamber
Device side wall above separator is equipped with the outlet pipe with control valve；Distinguished by porous filter plate and decalcification sulfur district bottom
Every, sulphur grain bed is wrapped to form by cylindrical outer wall in the middle part of sulfur district, it is logical between the outer wall bottom of sulphur grain bed and apparatus main body inner wall
The water deflector seal of annular is crossed, sulphur grain bed bottom sets the feeder being made of appendix and pipe-type porous aeration head, sulphur grain
The Porous Base for being used to support sulphur grain is set in bed, head space room is set above sulphur grain bed, the connection of head space room is used for the tail gas for discharging tail gas
Pipe；Sulphur grain bed periphery is enclosed with annular acid storage chamber, for collecting the sulfuric acid liquid that overflow goes out from sulphur grain bed；Race way sets acid solution and returns
Flow tube, acid solution reflux pump, mixed-liquor return pipe and mixed-liquor return pump, decalcification area top passes through mixed-liquor return pipe and mixed liquor
Reflux pump is back to water distribution area, and annular acid storage chamber is passed through in water distribution area by acid solution return duct and acid solution reflux pump.
The program can also further use following preferred embodiment：
The ratio between the mud collection area, water distribution area, the volume of decalcification area and sulfur district 1~1.5：1：8~10：1.5~2.
The annular acid storage chamber bottom maintains an equal level with sulphur grain bed Porous Base, and acid storage chamber acid solution is highly controlled in the sulphur grain height of bed
The 10%~20% of degree；The ratio between volume of sulphur grain bed and annular acid storage chamber is 1：0.8~1.
The ratio between volume of granule sludge decalcification reative cell and precipitation separation chamber is 1 in the decalcification area：0.3~0.4；Mud
The baffle of separator and the angle of apparatus main body side wall are 30 °~40 °；Precipitate in separation chamber at the top of outlet pipe and decalcification area
Vertical range is 5~10cm；Decalcification area equidistantly sets three pH detection mouths along short transverse, the pH detection mouths of bottom and water inlet pipe
Vertical range is 15~20cm.
The liquid feeding end of the acid solution return duct and the vertical range of sulfur district bottom are 5~10cm；Mixed-liquor return pipe
Liquid feeding end and decalcification area at the top of vertical range be 10~15cm.
The ratio of height to diameter of whole granule sludge vulcanization decalcification device is 5~7：1, the Gao Jing of mud collection area, water distribution area and sulfur district
Than for 0.5~1：1, the ratio of height to diameter in decalcification area is 3~4：1.
The back taper mud collecting chamber base angle is 50 °~70 °；Water inlet pipe and the vertical range in the ceiling portion are 5~10cm；
The vertical range of the outlet end and water inlet pipe of acid solution return duct and mixed-liquor return pipe is 5~10cm.
Simple substance sulphur granule can be filled with the sulphur grain bed, granule sludge can be filled with decalcification area.
Downflow weir is equipped with the top of the sulphur grain bed outer wall.
A kind of granule sludge using above device vulcanizes decalcification method, its step is as follows：
Water check valve is opened, calcification granule sludge is squeezed into reactor decalcification area by mud guiding tube using muddy water pump is led, is closed
Apolipsis water valve；Water pump of intaking sets flow value water inlet, when liquid level is persistently risen at the top of decalcification area in device, adjustment water inlet
Flow value causes liquid level slowly to rise through porous filter plate and enter sulfur district；Appendix starts to be aerated and pass through aerating tube-type micropore
Head enters in sulphur grain bed, starts production acid in sulphur grain bed, and sulfuric acid liquid is flowed into annular acid storage chamber by downflow weir and constantly accumulated, when
When acid storage chamber liquid level reaches the control liquid level upper limit, stop aeration, and close water inlet water pump；Open mixed-liquor return pump and acid
Liquid reflux pump, when liquid level in acid storage chamber reaches control liquid level lower limit, closes acid solution reflux pump；Mixed-liquor return is kept to make
Sulfuric acid liquid can be utilized repeatedly, decalcification area continue pickling decalcification, after multiple wash cycles, closes mixed-liquor return
Pump, opens water inlet water pump and outlet pipe control valve, and the mixed liquor after pickling is discharged, and the granule sludge after deliming passes through mud guiding tube
Discharge and continue next round circulation.
The present invention has the advantage that compared with prior art：1st, vulcanization production acid is melted into one with granule sludge decalcification
Body, apparatus structure is compact, and decalcification is easy to operate, easy to promote the use of；2nd, acid is produced with sulfide-oxidizing enzyme, it is of low cost, only need to be to sulphur
Grain bed is aerated, and elemental sulfur can be oxidized to sulfuric acid by vulcanization bacterium；3rd, decalcification is dissolved with acid solution, acid amount is controllable, can mitigate pair
The damage of granule sludge.
Brief description of the drawings
Fig. 1 is integral type granule sludge vulcanization decalcification structure drawing of device；
Fig. 2 is water distribution area top view.
In figure：Mud collection area I, water distribution area II, decalcification area III, sulfur district IV, race way V, lead muddy water pump 1, mud guiding tube 2, only
Water valve 3, back taper mud collecting chamber 4, pH detection mouths 5, water distributor 6, granule sludge decalcification reative cell 7, precipitation separation chamber 8, muddy water point
From device 9, water fender 10, appendix 11, pipe-type porous aeration head 12, Porous Base 13, sulphur grain bed 14, downflow weir 15, head space room
16th, offgas duct 17, acid storage chamber level control altitude line 18, annular acid storage chamber 19, porous filter plate 20, control valve 21, outlet pipe 22,
Mixed-liquor return pipe 23, acid solution return duct 24, acid solution reflux pump 25, mixed-liquor return pump 26, water inlet pipe 27, water inlet water pump 28.
Embodiment
The present invention is further elaborated and illustrated with specific embodiment below in conjunction with the accompanying drawings.
As illustrated in fig. 1 and 2, in integral type granule sludge vulcanization decalcification device, apparatus main body is divided into collecting from the bottom to top
Mud area I, water distribution area II, decalcification area III and sulfur district IV, race way V is independently of apparatus main body, for connecting water distribution area II and taking off
Calcium area III and water distribution area II and sulfur district IV.The concrete structure of each several part is as follows：Mud collection area I by mud guiding tube 2 from top to bottom
It is sequentially connected and leads muddy water pump 1,4 bottom of water check valve 3 and back taper mud collecting chamber.Water distribution area II sets water inlet pipe 27 and water distribution from top to bottom
Device 6, is provided with into water water pump 28 on water inlet pipe 27.Three pH detection mouths 5, decalcification area III are equidistantly provided with III side wall of decalcification area
It is divided into granule sludge decalcification reative cell 7 and precipitation separation chamber 8 from top to bottom, 8 top of precipitation separation chamber sets separator for mud and water 9,
The vulcanization decalcification device side wall of the top of separator for mud and water 9 is equipped with the outlet pipe 22 with control valve 21.IV bottom of sulfur district passes through
Porous filter plate 20 separates with decalcification area III, and the middle part of sulfur district IV is wrapped to form sulphur grain bed 14 by the cylindrical outer wall of bottomless uncovered.
Simple substance sulphur granule is filled with sulphur grain bed 14, granule sludge is filled with decalcification area III.The outer wall bottom of sulphur grain bed 14 and device
Sealed between main body inner wall by the water fender 10 of annular, the water of the lower section of water fender 10 is entered sulphur under the guiding of water fender 10
Grain bed 14；14 bottom of sulphur grain bed sets the feeder that is made of appendix 11 and pipe-type porous aeration head 12, in sulphur grain bed 14
If being used to support the Porous Base 13 of sulphur grain, sulphur grain bed 14 sets head space room 16 above, and the connection of head space room 16 is used to discharge tail gas
Offgas duct 17；Downflow weir 15 is equipped with the top of 14 outer wall of sulphur grain bed, 14 periphery of sulphur grain bed is enclosed with annular acid storage chamber 19, for collecting
The sulfuric acid liquid that overflow goes out from sulphur grain bed 14, annular acid storage chamber 19 can be clamped by 14 outer wall of sulphur grain bed and apparatus main body inner wall and
Into.Race way V sets acid solution return duct 24, acid solution reflux pump 25, mixed-liquor return pipe 23 and mixed-liquor return pump 26, decalcification area
III top is back to water distribution area II by mixed-liquor return pipe 23 and mixed-liquor return pump 26, and annular acid storage chamber 19 is returned by acid solution
Flow tube 24 and acid solution reflux pump 25 are accessed in mixed-liquor return pipe 23, and are distributed by water distributor 6 to decalcification area III.
In addition, in above device, the parameter of each component can set as follows：Mud collection area I, water distribution area II, decalcification area III with
The ratio between volume of sulfur district IV 1~1.5：1：8~10：1.5~2.Held with sulphur grain bed Porous Base 13 annular 19 bottom of acid storage chamber
Flat, acid storage chamber acid solution highly is controlled the 10%~30% of sulphur grain bed height, can delineate an acid storage chamber level control height in advance
Line 18 is spent, in order to control.The ratio between volume of sulphur grain bed 14 and annular acid storage chamber 19 is 1：0.8~1.Particle is dirty in decalcification area III
The ratio between volume of mud decalcification reative cell 7 and precipitation separation chamber 8 is 1：0.3~0.4；The baffle and apparatus main body of separator for mud and water 9
The angle of side wall is 30 °~40 °；It is 5~10cm to precipitate outlet pipe 22 and the vertical range at the top of decalcification area III in separation chamber 8；
The pH detection mouths 5 of III lowermost end of decalcification area and the vertical range of water inlet pipe 27 are 15~20cm.The liquid feeding end of acid solution return duct 24
Vertical range with IV bottom of sulfur district is 5~10cm；The liquid feeding end of mixed-liquor return pipe 23 is vertical with the top of decalcification area III
Distance is 10~15cm.The vertical range of pipe-type porous aeration head 12 and Porous Base 13 is 5~10cm, porous filter plate 20 with it is defeated
The vertical range of tracheae is 5~10cm.The ratio of height to diameter of whole granule sludge vulcanization decalcification device is 5~7：1, mud collection area I, water distribution
The ratio of height to diameter of area II and sulfur district IV is 0.5~1：1, the ratio of height to diameter in decalcification area III is 3~4：1.4 base angle of back taper mud collecting chamber is
50 °~70 °；Water inlet pipe 27 and the vertical range in the ceiling portion are 5~10cm；Acid solution return duct 24 and mixed-liquor return pipe 23
The vertical range of outlet end and water inlet pipe 27 is 5~10cm.
The oxygen supply of the aeration of sulfur district IV, is oxidized to sulfuric acid by sulphur using sulfide-oxidizing enzyme, is stored in annular acid storage chamber in the present invention
In 19；By acid cycle system, sulfuric acid liquid pump is entered into water distribution area II, by mixing fluid circulation, carries out decalcification area III
Mixed-liquor return, the calcium carbonate on inside granule sludge and surface is removed with acid solution, recovers the mass transfer ability of granule sludge.The present invention
Major Systems work it is as follows：
Sulfur district IV is production acid system, mainly including porous filter plate 20, water fender 10, appendix 11, aerating tube-type micropore
First 12, Porous Base 13, sulphur grain bed 14, annular acid storage chamber 19, downflow weir 15, head space room 16, offgas duct 17.Decalcification area III rises
Current sulphur grain bed 14 is entered by porous filter plate 20, air passes through appendix 11 and pipe-type porous aeration head 12 enters sulphur grain bed
In 14, under the sufficient situation of oxygen supply, the elemental sulfur in sulphur grain bed 14 is converted into sulfuric acid by sulfide-oxidizing enzyme.The acid solution of generation passes through
Downflow weir 15 is flowed into annular acid storage chamber 19, and annular 19 bottom of acid storage chamber is equipped with acid solution return duct 24, and acid solution return duct 24 is used for
Connect water distribution area II and sulfur district IV.
Decalcification area III is granule sludge decalcification system, mainly includes granule sludge decalcification reative cell 7, pH detection mouths 5, precipitation
Separation chamber 8, separator for mud and water 9 and outlet pipe 22.The sulfuric acid liquid and mixed liquor of reflux uniformly enter particle dirt by water distributor 6
Mud decalcification reative cell 7 carries out decalcification reaction, and depositing separation area 8 carries out mud-water separation.Mixed liquor after multiple pickling passes through water outlet
Pipe 22 is discharged, and pH detection meters can be installed in pH detection mouths 5, for monitoring the working status of pH reflection decalcification systems.
Water distribution area II is the uniform hybrid system of liquid, mainly includes water inlet pipe 27 and water distributor 6.The sulfuric acid liquid of reflux and
Mixed liquor is connected with water distributor 6, and enters decalcification area III by water distributor 6, ensures to enter by the flow-rate adjustment of reflux pump de-
The acid solution pH controls in calcium area are can either be in the range of deliming will not cause granule sludge damage again.
Input and output system of the mud collection area I for granule sludge.It is main to include leading muddy water pump 1, water check valve 3,2 and of mud guiding tube
Back taper mud collecting chamber 4.Calcification granule sludge is squeezed into reactor by mud guiding tube 2, closes water check valve 3；Granule sludge decalcification
After treated, water check valve 3 is opened, is discharged granule sludge by mud guiding tube 2 using muddy water pump 1 is led.
Race way V utilizes system for acid cycle, mainly includes acid solution return duct 24, acid solution reflux pump 25, mixed liquor and returns
Flow tube 23 and mixed-liquor return pump 26.Acid solution return duct 24 is used to connect water distribution area II and sulfur district IV, mixed-liquor return pipe 22
For connecting water distribution area II and decalcification area III.
Based on above device, the present invention also provides a kind of integral type granule sludge to vulcanize decalcification method, and step is as follows：
Water check valve 3 is opened, calcification granule sludge is squeezed into reactor decalcification area III by mud guiding tube 2 using muddy water pump 1 is led
In, close water check valve 3；Water pump 28 of intaking sets flow value water inlet, when liquid level persistently rises to the top of decalcification area III in device
When, adjustment feed water flow value causes liquid level slowly to rise through porous filter plate 20 and enter sulfur district IV；Appendix 11 starts to be aerated
And entered by pipe-type porous aeration head 12 in sulphur grain bed 14, start production acid in sulphur grain bed 14, sulfuric acid liquid is flowed by downflow weir 15
Enter in annular acid storage chamber 19 and constantly accumulate, (be about sulphur grain bed height when acid storage chamber liquid level reaches the control liquid level upper limit
20%~30%) when, stop aeration, and close water inlet water pump 28；Mixed-liquor return pump 26 and acid solution reflux pump 25 are opened, waits to store
When liquid level reaches control liquid level lower limit (about the 10%~15% of sulphur grain bed height) in sour room 19, acid solution reflux pump is closed
25；Keep mixed-liquor return that sulfuric acid liquid is repeatedly utilized, decalcification area III carries out continuing pickling decalcification, multiple wash cycles
Afterwards, mixed-liquor return pump 26 is closed, opens water inlet water pump 28 and outlet pipe control valve 21, the mixed liquor after pickling is discharged,
Granule sludge after deliming is discharged by mud guiding tube 2 and continues next round circulation.
Claims (10)
1. a kind of integral type granule sludge vulcanizes decalcification device, it is characterised in that：Apparatus main body is divided into collection mud from the bottom to top
Area (I), water distribution area (II), decalcification area (III) and sulfur district (IV), race way (V) independently of apparatus main body, for connecting water distribution
Area (II) and decalcification area (III) and water distribution area (II) and sulfur district (IV)；Mud collection area (I) by mud guiding tube (2) from top to bottom according to
Muddy water pump (1), water check valve (3) and back taper mud collecting chamber (4) bottom are led in secondary connection；Water distribution area (II) sets water inlet pipe from top to bottom
(27) and water distributor (6), it is provided with water inlet pipe (27) into water water pump (28)；Several pH are provided with decalcification area (III) side wall
Detection mouth (5), decalcification area (III) are divided into granule sludge decalcification reative cell (7) and precipitation separation chamber (8), precipitation separation from top to bottom
Separator for mud and water (9) is set above room (8), and the device side wall above separator for mud and water (9) is equipped with going out with control valve (21)
Water pipe (22)；Sulfur district (IV) bottom is separated by porous filter plate (20) and decalcification area (III), passes through cylinder in the middle part of sulfur district (IV)
Shape outer wall is wrapped to form sulphur grain bed (14), passes through the water blocking of annular between the outer wall bottom of sulphur grain bed (14) and apparatus main body inner wall
Plate (10) seals, and sulphur grain bed (14) bottom sets the feeder being made of appendix (11) and pipe-type porous aeration head (12),
The Porous Base (13) for being used to support sulphur grain is set in sulphur grain bed (14), sulphur grain bed (14) sets head space room (16), head space room above
(16) connection is used for the offgas duct (17) for discharging tail gas；Sulphur grain bed (14) periphery is enclosed with annular acid storage chamber (19), for collecting
The sulfuric acid liquid that overflow goes out from sulphur grain bed (14)；Race way (V) sets acid solution return duct (24), acid solution reflux pump (25), mixed liquor
Return duct (23) and mixed-liquor return pump (26), decalcification area (III) top are pumped by mixed-liquor return pipe (23) and mixed-liquor return
(26) water distribution area (II) is back to, annular acid storage chamber (19) is passed through water distribution by acid solution return duct (24) and acid solution reflux pump (25)
In area (II).
2. integral type granule sludge according to claim 1 vulcanizes decalcification device, it is characterised in that：The mud collection area
(I), the ratio between volume of water distribution area (II), decalcification area (III) and sulfur district (IV) 1~1.5：1：8~10：1.5~2.
A kind of 3. integral type granule sludge vulcanization decalcification device according to claim 1, it is characterised in that：The annular
Acid storage chamber (19) bottom and sulphur grain bed Porous Base (13) maintain an equal level, acid storage chamber acid solution highly control sulphur grain bed height 10%~
30%；The ratio between volume of sulphur grain bed (14) and annular acid storage chamber (19) is 1：0.8~1.
4. integral type granule sludge according to claim 1 vulcanizes decalcification device, it is characterised in that：The decalcification area
(III) the ratio between volume of granule sludge decalcification reative cell (7) and precipitation separation chamber (8) is 1 in：0.3~0.4；Separator for mud and water
(9) angle of baffle and apparatus main body side wall is 30 °~40 °；Precipitate the outlet pipe (22) in separation chamber (8) and decalcification area
(III) vertical range at the top of is 5~10cm；Decalcification area (III) equidistantly sets three pH detection mouths (5) along short transverse, bottom
PH detection mouths (5) and the vertical range of water inlet pipe (27) are 15~20cm.
5. integral type granule sludge according to claim 1 vulcanizes decalcification device, it is characterised in that：The acid solution reflux
It is 5~10cm that the liquid feeding end of (24), which is managed, with the vertical range of sulfur district (IV) bottom；The liquid feeding end of mixed-liquor return pipe (23) with
Vertical range at the top of decalcification area (III) is 10~15cm.
6. integral type granule sludge according to claim 1 vulcanizes decalcification device, it is characterised in that：Whole granule sludge sulphur
The ratio of height to diameter for changing decalcification device is 5~7：1, the ratio of height to diameter of mud collection area (I), water distribution area (II) and sulfur district (IV) are 0.5~1：
1, the ratio of height to diameter of decalcification area (III) is 3~4：1.
7. integral type granule sludge according to claim 1 vulcanizes decalcification device, it is characterised in that：Back taper mud collecting chamber
(4) base angle is 50 °~70 °, and water inlet pipe (27) and the vertical range in the ceiling portion are 5~10cm；Acid solution return duct (24) and mixed
It is 5~10cm that the outlet end of liquid return duct (23), which is closed, with the vertical range of water inlet pipe (27).
8. integral type granule sludge according to claim 1 vulcanizes decalcification device, it is characterised in that：Filled in sulphur grain bed (14)
Simple substance sulphur granule is filled with, granule sludge is filled with decalcification area (III).
9. integral type granule sludge according to claim 1 vulcanizes decalcification device, it is characterised in that：The sulphur grain bed
(14) it is equipped with downflow weir (15) at the top of outer wall.
10. a kind of granule sludge using claim 1 described device vulcanizes decalcification method, it is characterised in that step is as follows：
Water check valve (3) is opened, calcification granule sludge is squeezed into reactor decalcification area by mud guiding tube (2) using muddy water pump (1) is led
(III) in, water check valve (3) is closed；Water pump (28) of intaking sets flow value water inlet, when liquid level persistently rises to decalcification in device
When at the top of area (III), adjustment feed water flow value causes liquid level to rise through porous filter plate (20) and enter sulfur district (IV)；Appendix
(11) start aeration and entered by pipe-type porous aeration head (12) in sulphur grain bed (14), start production acid, sulphur in sulphur grain bed (14)
Acid solution is flowed into annular acid storage chamber (19) by downflow weir (15) and constantly accumulated, when acid storage chamber liquid level reaches control liquid level
During the upper limit, stop aeration, and close water inlet water pump (28)；Mixed-liquor return pump (26) and acid solution reflux pump (25) are opened, waits to store
When sour room (19) interior liquid level reaches control liquid level lower limit, acid solution reflux pump (25) is closed；Mixed-liquor return is kept to cause sulphur
Acid solution can be utilized repeatedly, and decalcification area (III) continue pickling decalcification, after multiple wash cycles, close mixed-liquor return pump
(26), water inlet water pump (28) and outlet pipe control valve (21) are opened, the mixed liquor after pickling is discharged, the granule sludge after deliming
Discharged by mud guiding tube (2) and continue next round and circulated.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482695A (en) * | 2019-07-31 | 2019-11-22 | 广西大学 | The compound decalcifying agent and decalcification regeneration technology of calcification anaerobic grain sludge |
| CN116200261A (en) * | 2023-03-10 | 2023-06-02 | 广东能源集团科学技术研究院有限公司 | Aeration pipe and aerator |
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| CN116200261A (en) * | 2023-03-10 | 2023-06-02 | 广东能源集团科学技术研究院有限公司 | Aeration pipe and aerator |
| CN116200261B (en) * | 2023-03-10 | 2024-03-29 | 广东能源集团科学技术研究院有限公司 | Aeration pipe and aerator |
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| CN107973503B (en) | 2023-03-28 |
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