CN106865749A - It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation by adding calcium ion - Google Patents
It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation by adding calcium ion Download PDFInfo
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- CN106865749A CN106865749A CN201710022599.2A CN201710022599A CN106865749A CN 106865749 A CN106865749 A CN 106865749A CN 201710022599 A CN201710022599 A CN 201710022599A CN 106865749 A CN106865749 A CN 106865749A
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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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- 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
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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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- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
A kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation by adding calcium ion, methods described comprises the following steps：1) take using the reactor of Sewage Treatment for Activated Sludge, reactor is normally running；2) excess sludge of discharge is collected, by 10 500mg (Ca2+The content addition calcium ion of)/g (MLSS), it is 50% 70% to dry in the shade to moisture content, prepares target sludge；3) using step 2) in prepared target sludge put into former reactor as returned sludge and normally run；4) repeat step 3) and step 4), until aerobic sludge basic granulesization and stable operation in reactor.The present invention, by, as returned sludge Returning reactor, artificially creating biofeedback mechanism after conditioning, using micropopulation sense effect and cell signaling molecule, provides the granulating that nuclei of condensation etc. collectively promote aerobic sludge using discarded excess sludge.
Description
Technical field
The invention belongs to field of sludge treatment, be related to it is a kind of by add calcium ion nurse one's health returned sludge rapidly promote it is aerobic
The method of granular sludge.
Technical background
Aerobic Granular Sludge Technology compares ordinary activated sludge due to good settling property, high sludge concentration, energy
Enough bear the characteristics such as high organic loading, load impact and noxious material, the focus just studied as all circles and reported.It is general next
Say, the formation of aerobic particle mud is a complex process comprising physics, chemistry and biological agent, main flow view is by this mistake
Journey is described as under certain hydrodynamic condition, the organism clustering phenomena that microorganism self-cohesion action is formed.Learn both at home and abroad
Person proposes various aerobic grains according to different reactors, experimental technique, research purpose etc. on the basis of respective experimental study
Sludge formation mechenism.At present, aerobic particle mud formed main flow mechanism mainly have Extracellular polymers hypothesis, self-coagulation principle,
Der Pilz hypothesis and nuclei of condensation mechanism.Recent studies have shown that, during aerobic sludge granulation, the signal communication between microorganism
Also play an important role.
Nuclei of condensation mechanism be exactly aerobic particle mud formation first have to a nuclei of condensation come for microorganism aggregation and
Growth provides place, the biomembrane, larger for such as being formed on suspended particulate, the anaerobism of inoculation or aerobic particle mud, reactor wall
Der Pilz etc..Inorganic little particle in water can carry a small amount of positive charge in the presence of hydraulic shear, can adsorb certain
The negatively charged microorganism such as the bacterium of amount：Organic little particle in water can secrete extracellular polymer under hydraulic shear effect
Thing, improves the hydrophobicity of cell surface, reduces cell surface Gibbs free energy, is that cell-cell interaction and sticking is provided with
Sharp condition.The operating modes such as certain sedimentation time, sedimentation depth are controlled to create certain selection pressure in the reactor, by larger particles
Stay in reactor, so that the nuclei of condensation and the microorganism sticked thereon have the time of abundance and nutriment to grow, and further
Stick more microorganisms, form the irregular mud granule of profile, i.e. embryo particle sludge.Embryo particle sludge is cut in waterpower
The aerobic particle mud with irregular figure and perpendicular reality 3-D solid structure is gradually formed in the presence of shear force, when particle reaches one
Due to the limitation of oxygen transfer and matrix mass transfer after being sized, particle size stops increasing, and the aerobic particle mud for now being formed is
Ripe aerobic particle mud.Calcium ion has been studied proof to aerobic as the indispensable trace element of growth of microorganism
Granular sludge has facilitation.Study and made by adding activated carbon, diatomite, magnetic, micro mist etc. in inside reactor
Promote aerobic sludge granulation for the nuclei of condensation, but in inside reactor addition due to by nuclei of condensation transformation efficiency, material stream
The problems such as mistake, whole structure was less desirable, was unfavorable for a large amount of additions and cost control in engineer applied.Some residual sludge is made
It is the technical measures that many sewage treatment process are used for returned sludge is back to reactor, but by conditioning outside reactor
Returned sludge is rarely reported come the research for promoting aerobic sludge granulation.Study simultaneously and show, aerobic sludge meeting in granulating
Detailed group's sense effect is produced, relevant cellular signal molecule is played an important role wherein, and group's sense effect can accelerate sludge
The synthesis of extracellular polymeric, raising antimicrobial surface adhesive ability, signaling molecule can promote microorganism secretion extracellular polymeric
And influence the formation of biomembrane, the increase of such as c-di-GMP signaling molecules can to promote the formation of aerobic particle mud.
The content of the invention
The problems such as in order to overcome the cycle of current aerobic particle mud culture long, easy unstability, biofeedback mechanism to lack, this
Invention is provided a kind of simple, economical, efficient nurse one's health returned sludge by adding calcium ion and rapidly promotes aerobic sludge granulation
Method.
Following technical scheme is provided in order to solve foregoing problems：
It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation, including following step by adding calcium ion
Suddenly：
1) take using the reactor of Sewage Treatment for Activated Sludge, reactor is normally running；
2) excess sludge of discharge is collected, by 10-500mg (Ca2+The content addition calcium ion of)/g (MLSS), dries in the shade to containing
Water rate is 50%-70%, prepares target sludge；
3) using step 2) in prepared target sludge put into former reactor as returned sludge and normally run；
4) repeat step 3) and step 4), until aerobic sludge basic granulesization and stable operation in reactor.
Technology design of the invention is：The present invention combines micropopulation sense effect and cell signaling molecule, will be lighter
The excess sludge of discharge reactor is chosen, it is dirty as backflow after adding calcium ion, appropriate desiccation etc. to nurse one's health processing means
Mud Returning reactor, forms a kind of biofeedback mechanism, promotes the microorganism in reactor to be intended to collection coalescence and granulates；Utilize
Calcium ion is added in outside to stimulate microorganism largely to discharge extracellular polymeric etc. as binding agent so that the sludge tool after treatment
There are the biologies such as substantial amounts of block or flocculation group to gather bulk properties, to be formed because the external force such as waterpower, aeration are acted on after Returning reactor
A large amount of fine particles, using nuclei of condensation mechanism, for the granulating of aerobic sludge provides certain nuclei of condensation and accelerates aerobic grain
The formation of sludge；The facilitation for being formed to aerobic particle mud in itself using calcium ion simultaneously；Excess sludge comes from reactor,
Microorganism is homologous adventive, and biotic intrusion phenomenon is not resulted in the microorganism in reactor.Dry in the shade to moisture content and be
The sludge of 50%-70% can keep microbial activity and form biofeedback, can condense under calcium constituent effect or certainly again
Block or group form the nuclei of condensation, it is ensured that the realization of aforementioned mechanism.Excess sludge is also carried out into recycling treatment simultaneously, is obtained certain
Economic benefit.
Beneficial effects of the present invention are mainly reflected in：
(1) micropopulation sense effect and cell signaling molecule are utilized, a kind of biofeedback mechanism is artificially created and is promoted
Oxygen sludge collection coalescence is granulated.
(2) excess sludge is nursed one's health using calcium ion, stimulates it to produce a large amount of extracellular polymerics etc. as binding agent,
Reinforcing excess sludge is condensed into bulk or bulk, and a large amount of fine particles are produced under external force after throwing back reactor, is aerobic
The formation of granule sludge provides the nuclei of condensation.
(3) facilitation formed to aerobic particle mud in itself using calcium ion.
(4) without exogenous biological, do not result in biotic intrusion and influence strain acute variation in reactor.
(5) changing waste into resources, recycling treatment is carried out using excess sludge, reduces sludge output.
(6) incubation time of aerobic particle mud is greatly shortened.
(7) simple to operate, it is only necessary to add calcium ion and appropriate drying and other treatment, process is simple, calcium ion is relatively common, easy
Obtain, method is workable, with low cost, easy engineering application.
(8) aerobic particle mud prepared by induction is high, heavy with closely knit, treatment effeciency compared with common activated sludge
The advantages such as performance is good, capacity of resisting impact load is strong drop.
Specific embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in
This.
Example 1
It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation, including following step by adding calcium ion
Suddenly：
1) reactor in normal operation is taken, inlet COD concentration is 500mg/L, NH4 +- N concentration is 25mg/L, TP concentration
It is 5mg/L；Reactor uses SBR methods, and it is that time of repose is lh to set primary operating parameter, and aeration time is 3h；In reactor
Active mud content is 3000mg/L.
2) excess sludge of discharge is collected, by 500mg/ (Ca2+The content addition calcium chloride of)/g (MLSS) simultaneously dries in the shade to containing
Water rate is 50%, prepares target sludge.
3) using step 3) in prepared target sludge put into former reactor as returned sludge and normally run, in water
There is a large amount of bulks not of uniform size or bulk sludge in the lower reactor of power effect.
5) daily repeat step 3) and step 4) once, after running 4 days, the granulating in reactor reaches 90%, particle
The SVI of sludge<45ml/g, settling property is good.
The present invention has closely knit, treatment effeciency high using the granule sludge that excess sludge feedback mechanism is formed, settling property
The advantage such as good.95% or so, the clearance of ammonia nitrogen substantially remains in 99% or so to the clearance of COD, and sinking speed 20~
30m/h, sludge volume index (SVI) drops to below 45ml/g from the 80ml/g of seed sludge, and MLSS rises to 6200mg/L.
Example 2
It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation, including following step by adding calcium ion
Suddenly：
1) reactor in normal operation is taken, inlet COD concentration is 500mg/L, NH4 +- N concentration is 25mg/L, TP concentration
It is 5mg/L；Reactor uses SBR methods, and it is that time of repose is lh to set primary operating parameter, and aeration time is 3h；In reactor
Active mud content is 2000mg/L.
2) excess sludge of discharge is collected, by 300mg/ (Ca2+The content addition calcium chloride of)/g (MLSS) simultaneously dries in the shade to containing
Water rate is 60%, prepares target sludge.
3) using step 3) in prepared target sludge put into former reactor as returned sludge and normally run, in water
There is a large amount of bulks not of uniform size or bulk sludge in the lower reactor of power effect.
5) daily repeat step 3) and step 4) once, after running 4 days, the granulating in reactor reaches 86%, particle
The SVI of sludge<45ml/g, settling property is good.
The present invention has closely knit, treatment effeciency high using the granule sludge that excess sludge feedback mechanism is formed, settling property
The advantage such as good.95% or so, the clearance of ammonia nitrogen substantially remains in 99% or so to the clearance of COD, and sinking speed 20~
30m/h, sludge volume index (SVI) drops to below 45ml/g from the 92ml/g of seed sludge, and MLSS rises to 5400mg/L.
Example 3
It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation, including following step by adding calcium ion
Suddenly：
1) reactor in normal operation is taken, inlet COD concentration is 500mg/L, NH4 +- N concentration is 25mg/L, TP concentration
It is 5mg/L；Reactor uses Round Sump oxidation ditch process, 10 hours water conservancy residence times；Active mud content is in reactor
2500mg/L。
2) excess sludge of discharge is collected, by 10mg/ (Ca2+The content addition calcium chloride of)/g (MLSS) simultaneously dries in the shade to aqueous
Rate is 70%, prepares target sludge.
3) using step 3) in prepared target sludge put into former reactor as returned sludge and normally run, in water
There is a large amount of bulks not of uniform size or bulk sludge in the lower reactor of power effect.
5) daily repeat step 3) and step 4) once, after running 10 days, the granulating in reactor reaches 88%, particle
The SVI of sludge<48ml/g, settling property is good.
The present invention has closely knit, treatment effeciency high using the granule sludge that excess sludge feedback mechanism is formed, settling property
The advantage such as good.95% or so, the clearance of ammonia nitrogen substantially remains in 99% or so to the clearance of COD, and sinking speed 20~
30m/h, sludge volume index (SVI) drops to below 48ml/g from the 90ml/g of seed sludge, and MLSS rises to 5400mg/L.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Various changes, modification, replacement and modification can be carried out in the case of departing from principle of the invention and objective to embodiment, the present invention
Scope limited by claim and its equivalent.
Claims (1)
- It is 1. a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation by adding calcium ion, it is characterised in that： Methods described comprises the following steps：1) take using the reactor of Sewage Treatment for Activated Sludge, reactor is normally running；2) excess sludge of discharge is collected, by 10-500mg (Ca2+The content addition calcium ion of)/g (MLSS), dries in the shade to moisture content It is 50%-70%, prepares target sludge；3) using step 2) in prepared target sludge put into former reactor as returned sludge and normally run；4) repeat step 3) and step 4), until aerobic sludge basic granulesization and stable operation in reactor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022599.2A CN106865749A (en) | 2017-01-12 | 2017-01-12 | It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation by adding calcium ion |
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| CN201710022599.2A CN106865749A (en) | 2017-01-12 | 2017-01-12 | It is a kind of to nurse one's health the method that returned sludge rapidly promotes aerobic sludge granulation by adding calcium ion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759065A (en) * | 2021-01-13 | 2021-05-07 | 中国科学院城市环境研究所 | Method for quickly starting anaerobic ammonia oxidation reactor and recovering activity of anaerobic ammonia oxidation bacteria |
| CN113428975A (en) * | 2021-07-12 | 2021-09-24 | 深圳市润科环保应用技术研究有限公司 | Process for rapidly culturing aerobic granular sludge |
-
2017
- 2017-01-12 CN CN201710022599.2A patent/CN106865749A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 贾燕妮: "《颗粒污泥部分亚硝化系统的建立、控制与特性研究》", 15 July 2016 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759065A (en) * | 2021-01-13 | 2021-05-07 | 中国科学院城市环境研究所 | Method for quickly starting anaerobic ammonia oxidation reactor and recovering activity of anaerobic ammonia oxidation bacteria |
| CN112759065B (en) * | 2021-01-13 | 2022-05-24 | 中国科学院城市环境研究所 | Method for quickly starting anaerobic ammonia oxidation reactor and recovering activity of anaerobic ammonia oxidation bacteria |
| CN113428975A (en) * | 2021-07-12 | 2021-09-24 | 深圳市润科环保应用技术研究有限公司 | Process for rapidly culturing aerobic granular sludge |
| CN113428975B (en) * | 2021-07-12 | 2023-02-03 | 深圳市润科环保应用技术研究有限公司 | Process for quickly culturing aerobic granular sludge |
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Application publication date: 20170620 |
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