CN108409024A - A kind of biological adsorption strengthens Magneto separate sewage carbon source concentration recycling system and method - Google Patents
A kind of biological adsorption strengthens Magneto separate sewage carbon source concentration recycling system and method Download PDFInfo
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- CN108409024A CN108409024A CN201710869031.4A CN201710869031A CN108409024A CN 108409024 A CN108409024 A CN 108409024A CN 201710869031 A CN201710869031 A CN 201710869031A CN 108409024 A CN108409024 A CN 108409024A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
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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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Abstract
The present invention relates to biological adsorptions to strengthen Magneto separate sewage carbon source concentration recycling system and method, belong to water-treatment technology field, the system includes biological adsorption pond, magnetic-coagulation pond, magnetic separating device, magnetic powder recovering device, anaerobic reactor, and the pipeline for connecting each equipment.This method comprises the following steps：Activated sludge is added using biological adsorption pond, realizes effective trapping to dissolved organic matter.Access magnetic-coagulation pond later, adds magnetic kind and high-efficient coagulant aide, so that flco is combined and increases.It recycles the strong magnetic-adsorption of magnetic separating device with the flco that magnetic kind is " core ", realizes carbon source flco high efficient solid and liquid separation, magnetic floc sedimentation enters the realization magnetic kind recycling of magnetic kind recovery system after separation, and concentration carbon source enters anaerobic reactor and realizes the utilization of resources.Biological adsorption and Magneto separate are combined by the present invention, can be efficiently solved magnetic-coagulation carbon source concentration bottleneck problem with Adsorption of Dissolved organic matter, be realized efficient sewage carbon source concentration and recycling.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of biological adsorption reinforcing Magneto separate sewage carbon source concentration money
Source system and method.
Background technology
Under conservation culture theory, changes traditional wastewater processing high energy consumption, high resource consumption disadvantage, sewage is pushed to provide comprehensively
Source, the provider that sewage plant is changed into resource and the energy is the important development direction of sewage disposal from now on, with high-efficiency low-carbon,
The mode development of high-level recycling is the important channel for realizing Sustainable Water Resources Development target using municipal sewage.Wherein one
A important model is the new way sewage recycling tupe using anaerobism as core.However it is dense to be limited to China's organic matter of sewage
Spend relatively low, municipal sewage anaerobic pathway resource technology advantage is difficult to play, therefore the efficient pre-concentration in front end of sewage carbon source is
Realize the key of carbon source anaerobic pathway high efficient energy sources.
However there are the higher problems of less efficient, cost for current carbon source concentration technique.For the technical problem, this project
By coupled biological absorption and super magnetic separation technique, biological adsorption process is acted on and surpassed to effective trapping of dissolved organic matter
The separation of solid and liquid characteristic of magnetic separation technique high-efficiency low-carbon is organically combined, to realize the advantage of biochemical route and materialization approach
Complementation, and then the contradictory problems of thickening efficiency and concentrated cost in carbon source concentration are solved, research and development more meet sustainable development idea
Novel sewage treatment technology, for municipal sewage energy stream high efficient resourcing productivity verification theoretical foundation and technology branch are provided
Support.
Include both at home and abroad at present mainly biosorption process, chemical strengthening coagulation method, object using the means of sewage pre-concentration
Change reinforcement.Biosorption process be by biology flocculation and adsorption function to realize the enrichment of organic matter, in AB techniques
A sections, using under short sludge age microorganism flco suction-operated enrichment sewage in organic matter, then pass through intermediate sedimentation pond
Concentration carbon source is obtained in a manner of sludge settling.But biological adsorption technique is due to the presence in intermediate sedimentation pond so that it still has
Larger occupation of land, and rejection to organics limited efficacy.Chemical strengthening coagulation method is to make dirt by dosing coagulant and flocculation aid
Particulate form and colloidal organic substrate in water are enriched with, but the method has that medicine consumption is high, dissolved organic matter is difficult to be enriched with
Disadvantage.Materialization reinforcement includes that high efficient separation technologies, the wherein UF membranes such as UF membrane and Magneto separate are less than using film characteristic aperture
Substance to be retained and realize Selective Separation concentrate, but the membrane pollution problem of UF membrane make its processing cost become major limitation
Factor；Magneto separate is nucleated to form magnetic floc sedimentation using magnetic kind, strengthens gravity and precipitates separative efficiency, but the enrichment of dissolved organic matter
And solid-liquid separation efficiency still has greater room for improvement.Meanwhile the high occupation of land of traditional wastewater factory keeps away problem with neighbour, is provided to soil
It is more prominent in source, the higher city of environmental quality requirement, therefore there is an urgent need for the research and development for the sewage disposal technology that efficiently saves land and applications.
Therefore efficient land-saving town sewage carbon source concentration technique is the research hotspot of current focus.
Invention content
The purpose of the present invention is to make up that carbon source concentrates that mesophytization approach is less efficient and materialization approach cost is higher asks
The needs of high-efficiency low-carbon sewage recycling processing research and development is inscribed and met, it is dense to provide a kind of biological adsorption reinforcing Magneto separate sewage carbon source
Contracting recycling system and method, by coupled biological absorption and magnetic separation technique, by biological adsorption process to dissolved organic matter
Effective trapping effect and the separation of solid and liquid characteristic of magnetic separation technique high-efficiency low-carbon organically combined, realize biochemical route and object
The mutual supplement with each other's advantages of change approach, in conjunction with anaerobic digestion means, research and development more meet the Novel sewage treatment technology of sustainable development idea.
In order to achieve the above object, technical solution provided by the invention is as follows：
A kind of biological adsorption proposed by the present invention strengthens Magneto separate sewage carbon source concentration recycling system and method, dirty for cities and towns
Water efficient low-consume recycling treatment, it is characterised in that：
Sewage enters biological adsorption pond and is quickly mixed and reacted with activated sludge, is generated using activated sludge surface extracellular
Polymer（EPS）Adsorptivity and flocculability, the organic matter in sewage is effectively enriched with, particulate form in water, colloidal attitude are made
Organic pollution and dissolved organic matter can be able to aggregation and form the flocculu shape for being easy to be separated by solid-liquid separation.
Sewage mixed liquor flows into magnetic-coagulation pond later, avoids magnetic kind from efficiently helping using differentiation dosing method is spatially separating
It is also easy to produce magnetic kind rendezvous problem under the conditions of solidifying agent.It adds magnetic kind and high-efficient coagulant aide and is mixing slowly lower formation enhanced flocculation, make
Biological floe improves floc sedimentation binding force and compactness further combined with increasing and form the magnetic floc sedimentation using magnetic as core, promotees
The convenience of carbon source recycling is concentrated after into separation of solid and liquid.
Sewage mixed liquor flows into magnetic separation system, and magnetic separating device is by strong magnetic force rare-earth magnetic disc and the iron-clad for being coated at disk
It forming, there is strong magnetic force not have magnetic force that magnetic floc sedimentation is made to be desorbed for adsorbing magnetic floc sedimentation, 1/4 position at 3/4 position in disk,
There is collecting tank to collect magnetic floc sedimentation below.The high-intensity magnetic generated using strong magnetic force rare-earth magnetic disc, magnetic flco in water is fast
Speed is adsorbed onto on iron-clad, and the magnetic carbon source floc sedimentation being attracted on iron-clad takes the water surface out of with device main axis, when going to magnetic
In disk 1/4 not the position of magnetic force when, magnetic floc sedimentation desorption falls into magnetic floc sedimentation collecting tank, then through helix transporting device, in turn
It is transported to next unit, to realize the quick separating of magnetic carbon source floc sedimentation and water, has reached the efficient concentration of carbon source in sewage
And separation.
Magnetic carbon source floc sedimentation enters magnetic kind recovery system, and Magneto separate magnetic roller is flowed through after being broken up by high speed dispersor, utilizes
The high-intensity magnetic field power of magnetic roller screens magnetic kind, to realize that magnetic kind separates and recovers.The magnetic kind sifted out inflow magnetic kind dosing is stirred
Case is mixed, then realizes that magnetic kind recycles by magnetic kind throwing device, the concentration carbon source of discharge carries out subsequent Anaerobic Digestion.
The concentration carbon source that above system generates enters CSTR or UASB anaerobic reactors and carries out producing methane through anaerobic fermentation, due to
Concentration process hydraulic detention time is extremely short, and inhibits aerobic microbiological process as possible, and takes biological adsorption mode to molten
Solution property organic matter is targetedly enriched with, therefore the mineralising of town sewage carbon source can effectively be inhibited to be lost in, and as far as possible
More organic carbon sources by various forms in waste water are enriched with, and are realized in concentrate to greatest extent collect carbon source
Anaerobic pathway is recycled, and improves the ratio of recyclable carbon source.And since this method is using two kinds of enrichments of absorption and coagulation
Means, carbon source do not enter in microbial body, therefore it is possible to prevente effectively from the breaking-wall cell that concentration carbon source anaerobic digestion is encountered is asked
Topic, to improve anaerobic gas generation.The biogas of acquisition provides the energy and heat source that system runs well by cogeneration of heat and power in situ.
The first step is that sewage enters biological adsorption pond and quickly mixed and reacted with activated sludge, biological adsorption
Hydraulic detention time is 10-30 min in system, and sludge loading reaches 4.0-6.0 kgBOD5/ kgMLSSd, dissolved oxygen 0.5-
1.5 mg/L.In this step, the extracellular polymeric generated using activated sludge surface（EPS）Adsorptivity and flocculability, will
Organic matter in sewage is effectively enriched with, and particulate form in water, colloidal attitude organic pollution and dissolved organic matter are enable
It is able to aggregation and forms the flocculu shape for being easy to be separated by solid-liquid separation.Biological adsorption method so that dissolved organic matter enters EPS in sewage
Adsorbent can be further reduced the content of organics in liquid, and increase the carbon source total amount of separable concentration, be conducive to maximum
Change the carbon source recycling realized and completed using anaerobic technology, the means by increasing product output realize the low consumption target of this method.
The second step is that the sewage mixed liquor of biological adsorption system outflow enters magnetic-coagulation system, using being spatially separating
Differentiation dosing method adds magnetic kind and high-efficient coagulant aide, so that magnetic kind and high-efficient coagulant aide more uniformly participate in coagulating,
Magnetic kind is avoided to be reunited together by high-efficient coagulant aide, without effectively being collided with small flco in sewage, formation contains
The magnetic floc sedimentation and high-efficient coagulant aide of " magnetic " core shift to an earlier date consumption problem.Magnetic kind adds 1-1.5 times of a concentration of SS concentration.
High-efficient coagulant aide adds a concentration of 30-50 μ g/L, and the hydraulic detention time of magnetic-coagulation agitator tank is 3.5 min, and agitating paddle turns
Speed is 70 r/min.In this step, it is wadded a quilt with cotton in the secondary reinforcement for mixing slowly lower formation by adding magnetic kind and high-efficient coagulant aide
It is solidifying, make biological floe further combined with increasing and form the magnetic floc sedimentation using magnetic as core, and improve floc sedimentation binding force and closely knit
Degree promotes the convenience of concentration carbon source recycling after being separated by solid-liquid separation.
The third step is that the sewage mixed liquor for obtaining the second step is sent into magnetic separation system progress Magneto separate,
Magnetic separating device is made of strong magnetic force rare-earth magnetic disc with the iron-clad for being coated at disk, and there is strong magnetic force to be used at 3/4 position in disk
The magnetic floc sedimentation of absorption, 1/4 position do not have magnetic force that magnetic floc sedimentation is made to be desorbed, and have collecting tank to collect magnetic floc sedimentation thereunder.It utilizes
The high-intensity magnetic that strong magnetic force rare-earth magnetic disc generates on magnetic flco quick adsorption to iron-clad, will be attracted on iron-clad in water
Magnetic carbon source floc sedimentation takes the water surface out of with device main axis, when going to the 1/4 not position of magnetic force in disk, magnetic floc sedimentation
Desorption falls into magnetic floc sedimentation collecting tank, then through helix transporting device, and then is transported to next unit, to realize magnetic carbon source wadding
The quick separating of group and water, has reached the efficient concentration of carbon source and separation in sewage.Iron-clad is adjusted by observing water outlet status
Rotating speed increases the time of contact of flow and iron-clad if then should suitably reduce iron-clad rotating speed containing flco in water outlet.Technique can be with
Realize the rate of recovery of COD about 70% in town sewage raw water, 90% or more TP removals, 90% or more SS removals, COD in water outlet,
TP, SS index can reach national sewage discharge level-one B standard.
The four steps is that the magnetic carbon source floc sedimentation that will be generated in the third step is discharged into magnetic kind recovery system, is passed through
High speed dispersor flows through Magneto separate magnetic roller after breaing up, screened magnetic kind using the high-intensity magnetic field power of magnetic roller, to realize magnetic kind
Separation and recovery.The magnetic kind sifted out is flowed into magnetic kind dosing agitator tank, then realizes that magnetic kind recycles by magnetic kind throwing device, discharge
Concentration carbon source carry out subsequent Anaerobic Digestion.
5th step be the concentration carbon source for generating the four steps be sent into CSTR or UASB anaerobic reactors into
Row Anaerobic Digestion since concentration process hydraulic detention time is extremely short, and inhibits aerobic microbiological process as possible, and takes
Biological adsorption mode is targetedly enriched with dissolved organic matter, therefore can effectively inhibit town sewage carbon source
Mineralising is lost in, and the organic carbon source as much as possible by various forms in waste water is enriched with, to greatest extent receive carbon source
Collection realizes that anaerobic pathway is recycled in concentrate, improves the ratio of recyclable carbon source.And since this method uses
Absorption and two kinds of enrichment means of coagulation, carbon source do not enter in microbial body, therefore it is possible to prevente effectively from concentration carbon source anaerobic digestion
The breaking-wall cell problem encountered, to improve anaerobic gas generation.The biogas of acquisition is normal by cogeneration of heat and power in situ offer system
The energy and heat source of operating.
Compared with prior art, the invention has the characteristics that and advantageous effect：
This method develops biochemical route coupling materialization approach and realizes the technique respectively having complementary advantages, and will be directed to enrichment dissolubility has
The biological adsorption process of machine object is combined with the magnetic separation technique for rapidly and efficiently detaching pimpled rubber figure's organic matter, by using cheap
The activated sludge absorption that is easy to get dissolved organic matter, combined magnetic field effect realize that muddy water rapidly and efficiently detaches, it is dense to solve existing carbon source
The contradictory problems of low-carbon high-efficiency in contracting technique reach wastewater efficient low consumption pre-concentration purpose, realize that municipal sewage energy stream is efficient
Recycling.
Magnetic kind is added in coagulation system, is formed containing " magnetic " core to make floc sedimentation band be magnetic, therefore magnetic can be utilized
Field force is quickly separated by solid-liquid separation, and traditional " biological adsorption-precipitation " is become " magnetic biological adsorption-magnetic disc separation ", is contracted significantly
It the short separation of solid and liquid time, improves treatment effeciency, while magnetic disc separation systematic substitution secondary settling tank, greatly reduces equipment occupation of land
Area, and the magnetic kind added is recyclable, to realize low-coumption sewage recycling processing system jointly.
Magnetic separating device in magnetic kind recovery system is made of strong magnetic force rare-earth magnetic disc with the iron-clad for being coated at disk, is avoided
The sludge residual and equipment loss problem that traditional " disk-scraping article " form generates so that water outlet water stabilization, and do not have to
Regular replacement scraping article saves operating cost.
This method organic carbon source as much as possible by various forms in waste water is enriched with, to greatest extent by carbon source
It collects in concentrate.Since hydraulic detention time is short, thus in sewage most of organic matter do not occur notable mineralising and into
Enter concentrate, improves the ratio of recyclable carbon source.And since this method is using absorption and two kinds of enrichment means of coagulation, carbon source
It does not enter in microbial body, therefore it is possible to prevente effectively from the breaking-wall cell problem that carbon source anaerobic digestion is encountered is concentrated, to carry
The efficiency of high organic matter of sewage anaerobism production capacity.This method whole process, which realizes sewage, to turn waste into wealth, and obtains product, both uses in this way
Water content of organics reaches discharge standard, and organic matter and nutriment in sewage is enable to be able to recycling.
This method is cheap practical, advanced, and flow is simple, takes up an area few, non-secondary pollution, and operation is easy, reliable, has apparent
Environmental benefit, Social benefit and economic benefit.
It is described further below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the flow signal that biological adsorption of the present invention strengthens Magneto separate sewage carbon source concentration recycling system and method
Figure；
Fig. 2 is the structural schematic diagram for being spatially separating differentiation dosing method of the embodiment of the present invention.
Specific implementation mode
A kind of biological adsorption proposed by the present invention strengthens Magneto separate sewage carbon source concentration recycling system and method, such as Fig. 1
Shown, which includes biological adsorption pond, magnetic-coagulation pond, magnetic separating device, magnetic powder recovering device, anaerobic reaction
Device, and the pipeline for connecting each equipment, connection relation be：Biological adsorption pond and magnetic-coagulation pond share a wall, on partition board
Side's opening supplies water, and stream enters magnetic-coagulation pond, magnetic-coagulation pond is connected with magnetic separating device by pipeline, magnetic separating device one end is direct
Water outlet, the sludge outlet for being located at the bypass of its device are connected with the sludge import of magnetic powder recovering device, and magnetic powder recovering device sludge goes out
Mouth is connected with anaerobic reactor.
Included the following steps using the method for treating water of the system：
1）Sewage enters biological adsorption pond and is quickly mixed and reacted with activated sludge, in biological adsorption system when hydraulic retention
Between be 10-30 min, sludge loading reach 4.0-6.0 kgBOD5/ kgMLSS d, dissolved oxygen are 0.5-1.5 mg/L.In this step
In, utilize the extracellular polymeric of activated sludge surface generation（EPS）Adsorptivity and flocculability, by sewage organic matter carry out
Effectively enrichment enables particulate form in water, colloidal attitude organic pollution and dissolved organic matter to be able to aggregation formation and is easy to solid
The flocculu shape of liquid separation.
2）The sewage mixed liquor of biological adsorption system outflow enters magnetic-coagulation system, using being spatially separating the differentiation side of adding
Formula adds magnetic kind and high-efficient coagulant aide, it is made effectively to be collided with small flco in sewage, forms the magnetic containing " magnetic " core
Property floc sedimentation.Magnetic kind adds 1-1.5 times of a concentration of SS concentration.High-efficient coagulant aide adds a concentration of 30-50 μ g/L, and magnetic-coagulation stirs
The hydraulic detention time for mixing case is 3.5 min, and rotating speed of agitator is 70 r/min.
3）The sewage mixed liquor that second step is obtained is sent into magnetic separation system and carries out Magneto separate, utilizes strong magnetic force Rare-Earth Magnetic
The high-intensity magnetic that disk generates on magnetic flco quick adsorption to iron-clad, will be fallen into water in disk desorption area's magnetism floc sedimentation desorption
Magnetic floc sedimentation collecting tank realizes the quick separating of magnetic carbon source floc sedimentation and water, has reached the efficient concentration of carbon source in sewage and has divided
From.
4）The magnetic carbon source floc sedimentation generated in third step is discharged into magnetic kind recovery system, after being broken up by high speed dispersor
Magneto separate magnetic roller is flowed through, is screened magnetic kind using the high-intensity magnetic field power of magnetic roller, to realize that magnetic kind separates and recovers.By what is sifted out
Magnetic kind flows into magnetic kind dosing agitator tank, then realizes that magnetic kind recycles by magnetic kind throwing device, after the concentration carbon source progress of discharge
Continuous Anaerobic Digestion.
5）The concentration carbon source that four steps is generated is sent into CSTR or UASB anaerobic reactors and carries out Anaerobic Digestion, obtains
The biogas obtained passes through cogeneration of heat and power in situ and provides the energy and heat source that system runs well.Embodiment is enumerated below to give further
Explanation.
The embodiment of the present invention is further illustrated with reference to Fig. 1 and Fig. 2.
Embodiment
Sewage after certain urban wastewater treatment firm fine fack, COD are that 186-394 mg/L, pH 7.21-7.44, TP are
5.37-7.79 a concentration of 86-107 g/L of mg/L, solid suspension SS.
This experiment use operating mode for：Magnetic kind adds 1 times of a concentration of SS concentration, and high-efficient coagulant aide adds a concentration of 30 μ
G/L, sludge loading are 5 gCOD/g MLSS d, and rotating speed of agitator is 70 r/min.Test result show that biological adsorption strengthens magnetic
It is about 70% to detach COD removal rates.As it can be seen that maximum compared to COD removal rates in common biological adsorption 2-2.5 h processing times
60%, biological adsorption strengthens super Magneto separate sewage carbon source concentration technology larger advantage in terms of carbon source concentrated effect.
Claims (10)
1. a kind of biological adsorption strengthens Magneto separate sewage carbon source concentration recycling system and method, for the sustainable of town sewage
Recycling treatment, it is characterised in that：The sewage disposal system includes biological adsorption pond, magnetic-coagulation pond, magnetic separating device, magnetic powder time
Receiving apparatus, anaerobic reactor, and the pipeline for connecting each equipment, connection relation be：Biological adsorption pond and magnetic-coagulation pond
A wall is shared, partition board upper opening supplies water, and stream is connected with magnetic separating device by pipeline into magnetic-coagulation pond, magnetic-coagulation pond, magnetic divides
It is directly discharged from device one end, the sludge outlet for being located at the bypass of its device is connected with the sludge import of magnetic powder recovering device, magnetic powder
Retracting device sludge outlet is connected with anaerobic reactor.
2. biological adsorption as described in claim 1 strengthens Magneto separate sewage carbon source concentration recycling system and method, feature
It is, activated sludge throwing device is provided in the biological adsorption pond.
3. biological adsorption as described in claim 1 strengthens Magneto separate sewage carbon source concentration recycling system and method, feature
It is, this approach includes the following steps：
1）By activated sludge input biological adsorption pond, realizes effective trapping to dissolved organic matter, form small floc sedimentation； 2）
Then composite waste enters magnetic-coagulation pond, by adding magnetic kind and high-efficient coagulant aide, particulate form and colloidal attitude in sewage is made to have
Machine object is condensed into the suspended matter mixture using magnetic kind as " core ", effect of the carbon source mixture in high-efficient coagulant aide with small floc sedimentation
Under further combined with increasing and improve floc sedimentation binding force and compactness；3）Magnetic floc sedimentation mixed liquor enters magnetic separating device, utilizes
The strong magnetic-adsorption of magnetic separating device highfield permanent magnet disk acts on, and realizes carbon source flco high efficient solid and liquid separation；4）Magnetism wadding
Group enters magnetic kind recovery system, breaks up floc sedimentation through high speed dispersor, recycles magnetic roller to sift out magnetic kind and realizes the recycling of magnetic kind, then leads to
It crosses magnetic kind throwing device and realizes that magnetic powder utilizes；5）Sewage coagulation concentration carbon source enters anaerobic reactor and carries out Anaerobic Digestion,
To realize carbon source recycling.
4. method as claimed in claim 3, it is characterised in that Magneto separate system makes this method hydraulic detention time extremely short, has
Effect inhibits aerobic microbiological process, can effectively inhibit town sewage carbon source carbon caused by bacteria metabolism activity
The mineralising in source is lost in, and realizes that anaerobic pathway is recycled in concentrate to greatest extent collect carbon source, improving can
Recycle the ratio of carbon source.
5. method as claimed in claim 3, it is characterised in that biological adsorption and magnetic-coagulation are combined by this method, outstanding realizing
The aggregation of floating particles state organic matter also realizes dissolved organic matter Adsorption while efficiently separating, and efficiently solves common magnetic
Coagulation carbon source concentration dissolved organic matter is difficult to the bottleneck problem being enriched with, and since this method is using absorption and two kinds of richnesses of coagulation
Collection means, carbon source do not enter in microbial body, therefore it is possible to prevente effectively from the breaking-wall cell that concentration carbon source anaerobic digestion is encountered
Problem, to realize efficient sewage carbon source concentration and recycling.
6. method as claimed in claim 3, it is characterised in that：Hydraulic detention time is 10- in the biological adsorption system
30 min, sludge loading is up to 4.0-6.0 kgBOD5/ kgMLSSd, dissolved oxygen are 0.5-1.5 mg/L.
7. method as claimed in claim 3, it is characterised in that add high-efficient coagulant aide for replacing common coagulants and helping solidifying
Agent, such as nano flocculant, because it has many advantages, such as large specific surface area, can be high than table so that dosage is small and flocculating effect is notable.
8. method as claimed in claim 3, it is characterised in that：The step 2）In magnetic kind and high-efficient coagulant aide toss area exist
Spatially detached, avoid magnetic kind by high-efficient coagulant aide reunite together, without effectively with small wadding in sewage
Body is collided, and the magnetic floc sedimentation containing " magnetic " core is formed, and magnetic kind adds 1-1.5 times of a concentration of SS concentration, high-efficient coagulant aide
Add a concentration of 30-50 μ g/L, the hydraulic detention time of magnetic-coagulation agitator tank is 3.5 min.
9. method as claimed in claim 3, it is characterised in that：The step 3）In magnetic separating device by strong magnetic force Rare-Earth Magnetic
Disk and the iron-clad for being coated at disk form, and 3/4 position has strong magnetic force for adsorbing magnetic floc sedimentation in disk, and 1/4 position does not have
Magnetic force makes magnetic floc sedimentation be desorbed, and has collecting tank to collect magnetic floc sedimentation thereunder.
10. method as claimed in claim 3, it is characterised in that：The step 5）In sewage coagulation concentration carbon source use
CSTR or UASB reactors carry out Anaerobic Digestion, on the basis of realizing that substantially saving processing unit takes up an area, to greatest extent
Carbon source is collected and carries out anaerobic pathway recovery processing in concentrate, the biogas of acquisition is providing system just by cogeneration of heat and power in situ
The energy and heat source often operated.
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| CN110467312A (en) * | 2019-08-12 | 2019-11-19 | 安徽环境科技集团股份有限公司 | A kind of recycling treatment process of white carbon black industrial wastewater |
| CN110627329A (en) * | 2019-11-12 | 2019-12-31 | 中央民族大学 | Carbon source concentration and recycling method for urban domestic sewage |
| CN113443720A (en) * | 2021-07-23 | 2021-09-28 | 苏州金螳螂园林绿化景观有限公司 | Magnetic suction purification method for landscape closed enclosure water system |
| CN113636641A (en) * | 2021-08-27 | 2021-11-12 | 南开大学深圳研究院 | Carbon dioxide emission reduction sewage treatment method for converting high carbon source into activated sludge and biomass coupled carbon sequestration to prepare soil conditioner |
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