CN108862832A - A kind of method and reactor of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water - Google Patents
A kind of method and reactor of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water Download PDFInfo
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- CN108862832A CN108862832A CN201810664357.8A CN201810664357A CN108862832A CN 108862832 A CN108862832 A CN 108862832A CN 201810664357 A CN201810664357 A CN 201810664357A CN 108862832 A CN108862832 A CN 108862832A
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- 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
- C02F1/5281—Installations for water purification using chemical agents
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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
- C02F3/30—Aerobic and anaerobic processes
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Abstract
The invention discloses the methods and reactor of a kind of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water, including：Flocculant is added in the water of source, is mixed, Powdered Activated Carbon is added immediately after the completion of stirring, remixes stir process；By treated, source water imports flocculation zone；Source water sinks to entering the area A of reactor naturally, and the alumen ustum that source particle water object, Powdered Activated Carbon, flocculant are formed under stirring precipitates in the area A；Source water enters the area O of reactor, the area O aeration from the area A, and adds carrier of the floating stuffing as biomembrane；Source water is discharged after the oxidation of the area O biomembrane, into precipitating-filtering-disinfection processing routine, completes purification.Present invention process is relatively simple, without adding chemical oxidizing agent, mainly removes multiple pollutant matter using biological effect, and secondary to utilize chemical agent, structure of reactor is compact, and collection biological respinse flocculation, adsorbs, is deposited in one.
Description
Technical field
The present invention relates to drinking water treatment technique and technical fields, and in particular to a kind of tiny flocculation biological carbon biomembrane AO mono-
The method of bodyization purification slightly-polluted raw water.
Background technique
Currently, to be contaminated phenomenon more universal for potable water source district, cause source Organic substance in water, ammonia nitrogen (total nitrogen), iron,
There is different degrees of over-standard phenomenon in the multinomial water quality indicator such as manganese, algae.Contaminated source water is to safety water supply and people's health
It causes greatly to threaten, in order to ensure the health of resident, it is necessary to which water head site is reinforced protecting.However, water source pump-station is by each
The limitation of kind factor is difficult to be avoided pollution completely, so carrying out processing to source water using necessary technology in water factory is also
One of effective drinking water safety safeguard.Current contaminated source water treatment technology is more, such as using ozone-active carbon,
Oxidant pre-oxidation treatment, using filter membrane processing, Biological Pretreatment etc., every kind of method has respective adaptation range and condition, such as
Filter membrane processing is usually the removal impurity such as larger molecular organics and colloid, and Biological Pretreatment is usually removal source water organic matter etc..
It is relatively easy for the source water treatment technique of the Single Pollution factor, as micro-content organism pollution can carry out oxygen using strong oxidizer
Change processing, however for the processing of the slightly-polluted raw water of multi-parameter, effective technology still compares shortage at present.
Ozone-active carbon (biology) combination is that current slightly-polluted raw water handles one of the method being most widely used, ozone
Oxidizing process has the unique advantage of decoloration, sterilization, deodorization and the efficient oxidation Organic substance in water, and active carbon generally has huge table
Area and microcellular structure abundant can also provide place for inhabiting for microorganism.In water purification process, traditional handicraft is mixed
Solidifying filtering is to molecular weight>The organic matter of 10000 dalton can be removed all,<10000 removal rates are only 30% or so (general smaller
It is more difficult to)；To molecular weight less than 3000, especially 500~1000 organic matter has preferable removal for activated carbon adsorption；At biology
For reason to molecular weight less than 1000, especially less than 500 organic matter has better removal effect.Ozone and activated carbon can be by each model
The organic matter enclosed keeps certain removal efficiency.Ozone-activated carbon adsorption can drop ozone oxidation, activated carbon adsorption, biology
The processes such as solution (forming biological carbon), filtering are combined together, and have good treatment effect (mainly organic slightly-polluted raw water
Object), disinfection by-products predecessor, organic matter and ammonia nitrogen can be removed simultaneously, and keep many indexs such as coloration, stink comprehensive
To improvement, effluent quality can be effectively improved.Ozone-Biological Activated Carbon Process although the removal effect to organic matter is significant,
It is that there is also shortcomings：(1) ozone oxidation by-product is formed.Such as form formaldehyde and bromate [Chen Hongjing, ozone/biology
Activated carbon process handles the efficiency of slightly-polluted raw water, Chinese water supply and drainage, 2010,27 (17)：18~21]；(2) bio-safety and
Aluminium leakage problem.It is handled by ozone and activated carbon, there is pathogenic microorganism increase, the concentration of aluminium increases phenomenon [Lu Kunming, micro- pollution
The application at water source and urban water supply ozone biological active carbon treatment process, water purification technology 2010,29 (4):19~23]；(3) cost
Increase significant.As Hangzhou Southern Star water factory increases by 0.199 yuan/m using the technique water factory total operating cost3[for honor etc., ozone-life
The operation of object activated carbon filter and water factory's cost Changeement, water supply and drainage, 2006,32 (10)：12~19]；(4) hydrochemistry is steady
Qualitatively reduce.Such as occur the phenomenon that pH is greatly lowered [Qiao Tiejun, ozone BAC Technology application in water quality safety grind
Study carefully, environmental science, 2009,30 (11)：3311~3315].In addition, ozone-activated carbon adsorption is also for the source water containing ferrimanganic
It is all non-deliquescent substance [Fe in the presence of the product that very big unfavorable factor is Fe-Mn oxidation2+Non-solubility is formed after oxidation
Iron hydroxide；Mn2+The MnO of non-solubility is formed after oxidation2], active carbon operation is adversely affected.
Bio-oxidation process generally have the characteristics that it is low in cost, due to during drinking water treatment since organic matter is dense
Spend it is lower, generally use technology of biological membrane as control organic matter measure.It is raw but since source water organic concentration is lower
The growth of object film is restricted, and causes bio-oxidation process not high to the removal rate of organic matter, from the angle of drinking water safety
Consider, bio-oxidation process is difficult to the only resource as control organic matter, needs to be combined with other technologies.
Summary of the invention
The purpose of the present invention is to provide a kind of sides of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water
Method, which overcome the deficiencies in the prior art, also there is certain effect for total nitrogen, turbidity and coloration, and technique is simpler, avoids
The negative effect caused by water quality of a large amount of chemical oxidizing agents is added, the water quality safety guarantee that source water is contaminated can be effectively solved and ask
Topic.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water, including：
Step (1)：Flocculant is added in the water of source, is mixed, Powdered Activated Carbon is added immediately after the completion of stirring, then mix
Close stir process；
Step (2)：By the flocculation zone of treated source water imported into reactor；
Step (3)：Source water in flocculation zone sinks to entering the area A (biological carbon area, similarly hereinafter) of reactor naturally, in stirring shape
The alumen ustum that source particle water object, Powdered Activated Carbon, flocculant are formed under state precipitates in the area A；
Step (4)：Source water enters the area O (biomembrane area, similarly hereinafter) of reactor, the area O aeration from the area A, and adds suspension and fill out
Expect the carrier as biomembrane；
Step (5)：Source water is discharged after the oxidation of the area O biomembrane, into precipitating-filtering-disinfection processing routine, completes net
Change.
Further improvement lies in that the area A is anoxic, is not aerated environment；The area O is aerobic, aeration environment.
Further improvement lies in that the specification of the Powdered Activated Carbon is 200 mesh or more, the dosage of Powdered Activated Carbon is 2
~5mg/L is stirred 5~10s of processing after Powdered Activated Carbon is added.
Further improvement lies in that 5~10mg/L of dosage of the flocculant, flocculant be added after mixing 20~
30s。
Further improvement lies in that the floating stuffing is plastic spherical floating stuffing, the partial size of floating stuffing is 20~
50mm, it is hollow, and density is lower than the density of water.
Further improvement lies in that the area the O aeration includes upper layer aeration and lower layer's aeration.
A kind of reactor of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water, including flocculation zone, the area A and
The area O；
Water inlet end of the top of the flocculation zone as reactor, is located at the middle position of reactor；
The area A is located at the lower section of flocculation zone, and the center in the area A is connected to flocculation zone, and stirring is equipped in the area A
Device；
Water outlet of the top in the area O as reactor, is located at the periphery of flocculation zone, and the lower end in the area O and A
The upper end non-center position in area is connected to, and aerator is equipped in the area O.
Further improvement lies in that the agitating device is made of motor, drive rod and agitating plate, the motor is located at flocculation
Above area, the drive rod is connected to the output end of motor, and drive rod passes vertically through after flocculation zone cross direction profiles in the area A,
The agitating plate has several pieces, and the longitudinal arrangement at interval is on drive rod.
Further improvement lies in that the aerator includes upper layer circumferential direction aerated conduit and lower layer's circumferential direction aerated conduit, institute
It states upper layer circumferential direction aerated conduit and lower layer's circumferential direction aerated conduit is arranged at the radius 1/2 in the area O.
Further improvement lies in that at the communicating position in the area A and the area O from center toward outer ring be successively arranged porous plate, every
Plate, water passage, partition and porous plate.
The beneficial effects of the present invention are：The present invention can be by reproducibilities such as organic matter, ammonia nitrogen, manganese, iron, nitrite nitrogens
Index efficiently removes；And the indexs such as total nitrogen, turbidity, coloration can also effectively remove.Technique is relatively simple, without adding chemistry
Oxidant (only needs to add a small amount of coagulant and active carbon), mainly removes multiple pollutant matter using biological effect, secondary
Using chemical agent, structure of reactor is compact, collection biological respinse (suspension microorganism and attached microbial), flocculation, absorption, precipitating
In one.
Detailed description of the invention
Fig. 1 is the cross-section structure signal of the reactor of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water
Figure；
In figure：1- flocculation zone, the area 2-A, the area 3-O, 4- motor, 5- drive rod, 6- agitating plate, the upper layer 7- circumferential direction aeration tube
Road, 8- lower layer circumferential direction aerated conduit, 9- partition, 10- porous plate, 11- sludge pipe, 12- overflow weir.
Specific embodiment
The application is described in further detail with reference to the accompanying drawing, it is necessary to it is indicated herein to be, implement in detail below
Mode is served only for that the application is further detailed, and should not be understood as the limitation to the application protection scope, the field
Technical staff can make some nonessential modifications and adaptations to the application according to above-mentioned application content.
As shown in connection with fig. 1, a kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water, including：
Step 1：Flocculant is added in the water of (contaminated) source, under normal circumstances, flocculant dosage is fewer, is 5
~10mg/L, because there are also the biological flocculations of biological carbon and biomembrane to exist below；Mixing after flocculant addition
20~30s.
Powdered Activated Carbon is added after the completion of stirring immediately, Powdered Activated Carbon granularity must be smaller, is otherwise easy to be deposited in A
Dead zone is formed on area bottom, and Powdered Activated Carbon specification takes 200 mesh or more, and dosage is 2~5mg/L, if source water organic matter is dirty
More serious, consideration increase as one sees fit is contaminated, is stirred 5~10s of processing after addition Powdered Activated Carbon.
Step 2：By the flocculation zone 1 of treated source water imported into reactor, (actually intake tunnel, vertical becomes a mandarin
Pipe), the effect without mixing of flocculation zone 1, this region flocculate the subtle alumen ustum to be formed and Powdered Activated Carbon during becoming a mandarin mutually
Collision.
Step 3：Source water in flocculation zone 1 sinks (gravity) into the area A 2 of reactor naturally, is slowly stirring
The alumen ustum that source particle water object, Powdered Activated Carbon, flocculant are formed under state precipitates in the area A 2.
This step does not require the flocculant added to form big alumen ustum immediately, and alumen ustum is minimal amount in 2 sludge of the area A composition
One kind, and there are also slow whipping process in the area A, the hydraulics that can still have similar coagulating process to need.It throws
The active carbon added has the function of absorption source Organic substance in water, and a large amount of source water organic matters and tiny particulate matter are also with active carbon
It absorbs into and is trapped in the area A (biological carbon area).
The tiny particles such as active carbon, microorganism, alumen ustum, the source particle water object in the area A 2 (substantially correspond to suspended matter
Property) concentration gradually increases, and is gathered in the bottom section of reactor, it is formed " sludge ".Due to the region oxygen deprivation, and microorganism
Presence with organic matter gradually uses up oxygen, therefore forms anoxic zone, the i.e. area A.The area A stirs at low speed, using propeller or agitating plate into
Row stirring, the effect of stirring have：It avoids biological carbon from being deposited in reactor bottom and forms dead zone, promote flocculant to form alumen ustum, increase
Add mass transfer effect.
In the area A, a large amount of microorganism is grown on active carbon and forms biological carbon, microorganism carry out activity, partial organic substances obtain
To degradation, part coloration is removed.
Step 4：Source water enters the area O 3 of reactor from the area A 2, and the area O 3 is aerated, and aeration can guide source water to realize in the area O 3
Partial circulating is unpowered circulation；In addition carrier of the floating stuffing as biomembrane is added.
Gradually apposition growth multiple-microorganism above floating stuffing, since 3 organic matter of the area O enters stream load very little, thus it is biological
Film is mainly chemosynthetic autotroph bacterium, including the bacterium with iron-manganese oxide ability, such as ammonification and nitrite bacteria.Iron, manganese,
Ammonia nitrogen and nitrite nitrogen are oxidized to iron oxide, manganese dioxide, nitrate etc. respectively.Iron oxide, manganese dioxide are non-dissolution
Property substance, the component part of sludge is gradually formed by microorganism (sludge) absorption, and nitrate is then most of flows out with water.
Since the area O 3 is not full pond aeration (being only aerated in side), therefore partial circulating is formed in 3 range of the area O, a part
Source water can flow back into the area A 2 and then form systemic circulation.In order to improve circulating effect, also for the effective appearance for increasing single reactor
Product, 3 middle position of the area O should separate.In order to adjust circulating effect, two layers of arrangement of aerated conduit point is big when needing
The flow of circulation is small, opens upper layer aeration tube；When needing the flow of systemic circulation big, opens lower layer's aeration tube or be switched on for two layers.
Flowing back into the source water in the area A 2 nitrate in the environment of anoxic can be reduced that (there is biological carbon in the area A 2 therefore has micro- life
There is organic matter in object, the area A 2, and environment is anoxic, all meet denitrifying condition), therefore total nitrogen also has part removal effect.But by
It can not be recycled for whole water in systemic circulation, therefore the anti-nitration reaction based on systemic circulation cannot be very thorough, therefore total nitrogen
It can only partially remove.
The microorganism that the area O 3 falls off, it is most of also to enter the area A 2 with systemic circulation and be detained in the area A 2, it is outstanding to increase the area A 2
The source of floating object.
Step 5：Source water is discharged after the oxidation of 3 biomembrane of the area O, into precipitating-filtering-disinfection processing routine, completes net
Change.
The source water of discharge only removes major pollutants, therefore there is still a need for the processing journeys such as normal precipitating, filtering, disinfection
Sequence is here the prior art, is not described in detail.
After above-mentioned processing, the reproducibilities such as organic matter, ammonia nitrogen, manganese, iron, nitrite nitrogen index is available efficient
Removal；And the indexs such as total nitrogen, turbidity, coloration can effectively remove.The source water not high for concentration containing algae, part algae also may be used
Removal, but source water extra high for concentration containing algae can generate system serious since algae can also regard suspended matter as
Impact and negative effect, it should ensure the normal operation of technique except algae in advance.
In addition, the present invention also describes a kind of reaction of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water
Device preferred structure comprising flocculation zone 1 (cylindrical channel), the area A 2 (cylindrical pond) and the area O 3 (circular ring shape pond).
Wherein, water inlet end of the top of flocculation zone 1 as reactor is located at the middle position of reactor；The area A 2 is located at
The lower section of flocculation zone 1, and the center in the area A 2 is connected to flocculation zone 1, and agitating device is equipped in the area A 2；The top conduct in the area O 3
The water outlet of reactor is located at the periphery of flocculation zone 1, and the upper end non-center position in the lower end in the area O 3 and the area A 2 connects
It is logical, aerator is equipped in the area O 3.
Agitating device is made of motor 4, drive rod 5 and agitating plate 6, and motor 4 is located at 1 top of flocculation zone, and drive rod 5 connects
In the output end of motor 4, and drive rod 5 pass vertically through flocculation zone 1 after cross direction profiles in the area A 2, agitating plate 6 has several pieces,
Every longitudinal arrangement on drive rod 5.
2 bottom of the area A is provided with sludge pipe 11, and from bottom discharge sludge, (this sludge quality is a variety of when concentration of suspension is excessive
Multiplicity, different with the sludge quality of common biological treatment, sludge includes alumen ustum, the active carbon, source of biological carbon, tiny flocculation formation
The biomembrane etc. that particle water object suspended matter, the area O fall off).The overflow weir 12 of 3 top of the area O setting draining, purifies by main reactor
Source water from overflow weir 12 flow out.
Preferably, if reactor bottom considers that then 2 volume of the area bottom A is 2460m according to diameter 28m, depth of water 4m3；Top
Tank depth considers that then 3 volume of the area O is 3080m with 5m3, aerator includes upper layer circumferential direction aerated conduit 7 and lower layer's circumferential direction aeration
Pipeline 8, upper layer circumferential direction aerated conduit 7 and lower layer's circumferential direction aerated conduit 8 are arranged at the radius 1/2 in the area O 3, then are arranged as straight
The annular of diameter 14m.In addition, alternately partition 9 and porous plate 10 are equipped at the communicating position in the area A 2 and the area O 3, because no-load is wanted
It asks, the speed of water flow via hole is also very slow, therefore plastic multi hole plate.When the percent opening of porous plate 10 and aperture are needed according to aeration
The flow that the systemic circulation of composition needs considers.
In lab scale reaction unit (area dischargeable capacity 10L, the A volume 4L and O area volume 6L of small testing device), continuously into
Water, water intaking source are lake water in campus and manganese sulfate and ferrous sulfate as simulation source water (former lake water two indexs
It is not exceeded), flow 1.5L/h, the sludge that initial operating stage adds sewage plant is used as microbe inoculation, continuum micromeehanics operation 1 on a small quantity
A reactor is basicly stable after half a month, tests 3 water inlets water outlet data, is averaged.Data are as follows：
Table explanation：Data be continuous 3 sub-sampling average value (daily sampling 1, test, continuously take 3 days immediately,
The average value that final data is 3 days), in addition to turbidity and coloration, unit is mg/L, and the test of turbidity and coloration is quiet in beaker
Set the data that upper liquid is taken after precipitating 30min (sludgd deposition is arranged at lower part).The measurement of total manganese and total iron uses Flame Atomic Absorption Spectrometry
Spectrophotometry (GB11911-89), sample carry out resolution processing.The measurement of ammonia nitrogen uses Berthelot spectrophotometry (HJ
535-2009), CODMnMeasurement use the measurement (GB 11892-89) of permanganate index, the measurement of total nitrogen is using alkaline mistake
Potassium sulfate clears up ultraviolet spectrophotometry (HJ 636-2012), it is contemplated that the organic matters such as algae will affect the survey of this three indexs
It is fixed, therefore this three indexs use 0.45 μm of filter membrane to carry out filtration treatment to water sample before the assay, that is, what is measured is actually molten
Solution property index, the method with national standard is not exactly the same.The measurement of turbidity uses GB 13200-91, the measurement of coloration
Using GB 11903-89.
As seen from table, manganese, iron, ammonia nitrogen removal frank are higher, more than 80%；Coloration and CODMnAlso there is certain removal rate,
Removal rate is 50% or more；And the removal rate of total nitrogen and turbidity is not satisfactory, not up to 40%.According to the analysis, nitrogen removal rate
Relatively low may be that can be realized the flow (i.e. systemic circulation) that anaerobic-aerobic recycles in system to be difficult to control, due to reactor volume
Too small, stringent anaerobic-aerobic environmental Kuznets Curves are also undesirable, and available organic object amount is less after all in the water of source, can not
It can artificially add organic matter in order to improve nitrogen removal rate and enter reaction system；And it may be flocculant that turbidity removal rate is relatively low
It adds less caused.Still to advanced optimize operating parameter according to the water quality situation of source water during engineer application, to mention
The efficiency of high present invention process.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (10)
1. a kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water, which is characterized in that including：
Step (1)：Flocculant is added in the water of source, is mixed, Powdered Activated Carbon is added immediately after the completion of stirring, remixes and stirs
Mix processing；
Step (2)：By the flocculation zone (1) of treated source water imported into reactor；
Step (3)：Source water in flocculation zone (1) sinks to entering the area A (2) of reactor, the source particle water under stirring naturally
The alumen ustum that object, Powdered Activated Carbon, flocculant are formed is precipitated in the area A (2)；
Step (4)：Source water enters the area O (3) of reactor, the area O (3) aeration from the area A (2), and adds floating stuffing as biology
The carrier of film；
Step (5)：Source water is discharged after the oxidation of the area O (3) biomembrane, into precipitating-filtering-disinfection processing routine, completes net
Change.
2. a kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 1,
It is characterized in that：The area A (2) is anoxic, is not aerated environment；The area O (3) is aerobic, aeration environment.
3. a kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 1,
It is characterized in that：The specification of the Powdered Activated Carbon is 200 mesh or more, and the dosage of Powdered Activated Carbon is 2~5mg/L, is added
5~10s of processing is stirred after Powdered Activated Carbon.
4. a kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 1,
It is characterized in that：5~10mg/L of dosage of the flocculant, 20~30s of mixing after flocculant addition.
5. a kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 1,
It is characterized in that：The floating stuffing is plastic spherical floating stuffing, and the partial size of floating stuffing is 20~50mm, hollow and close
Degree is lower than the density of water.
6. a kind of method of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 1,
It is characterized in that：The area O (3) aeration includes upper layer aeration and lower layer's aeration.
7. a kind of reactor of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water, it is characterised in that：Including wadding
Coagulation zone (1), the area A (2) and the area O (3)；
Water inlet end of the top of the flocculation zone (1) as reactor, is located at the middle position of reactor；
The area A (2) is located at the lower section of flocculation zone (1), and the center of the area A (2) is connected to flocculation zone (1), the area A
(2) agitating device is equipped in；
Water outlet of the top of the area O (3) as reactor, is located at the periphery of flocculation zone (1), and under the area O (3)
End is connected to the upper end non-center position of the area A (2), and aerator is equipped in the area O (3).
8. a kind of reaction of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 7
Device, it is characterised in that：The agitating device is made of motor (4), drive rod (5) and agitating plate (6), and the motor (4) is located at
Above flocculation zone (1), the drive rod (5) is connected to the output end of motor (4), and drive rod (5) passes vertically through flocculation zone (1)
Cross direction profiles are in the area A (2) afterwards, and the agitating plate (6) has several pieces, and the longitudinal arrangement at interval is on drive rod (5).
9. a kind of reaction of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 7
Device, it is characterised in that：The aerator includes upper layer circumferential direction aerated conduit (7) and lower layer's circumferential direction aerated conduit (8), it is described on
Floor circumferential direction aerated conduit (7) and lower layer's circumferential direction aerated conduit (8) are arranged at the radius 1/2 in the area O (3).
10. a kind of reaction of tiny flocculation biological carbon biomembrane AO integrated purifying slightly-polluted raw water according to claim 7
Device, it is characterised in that：At the communicating position in the area A and the area O from center toward outer ring be successively arranged porous plate (10), partition (9),
Water passage, partition (9) and porous plate (10).
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