CN106380003A - Aerobic granular sludge based on ferric oxide and phosphorus-accumulating bacteria, and preparation method thereof - Google Patents
Aerobic granular sludge based on ferric oxide and phosphorus-accumulating bacteria, and preparation method thereof Download PDFInfo
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- CN106380003A CN106380003A CN201610875156.3A CN201610875156A CN106380003A CN 106380003 A CN106380003 A CN 106380003A CN 201610875156 A CN201610875156 A CN 201610875156A CN 106380003 A CN106380003 A CN 106380003A
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- polyp bacteria
- ferrum oxide
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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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- 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
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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
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
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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
Abstract
The invention provides an aerobic granular sludge based on ferric oxide and phosphorus-accumulating bacteria, and a preparation method thereof. The preparation method comprises the following steps of adding activated carbon powder into concentrated nitric acid, completely immersing, stirring for 1 to 2h at constant temperature, filtering, water washing, and drying to obtain modified powdered activated carbon; adding the modified powdered activated carbon into a ferric nitrate water solution, ultrasonic oscillating, filtering, drying, and high-temperature calcining to obtain magnetic activated carbon powder; adopting flocculent activated sludge powder as a seed sludge, placing the seed sludge into a sequencing batch reactor, adding the magnetic activated carbon powder, uniformly mixing, operating with constant-temperature water, aerating, inflowing, discharging, precipitating, idling and discharging sludge to obtain the aerobic granular sludge based on the ferric oxide and the phosphorus-accumulating bacteria. The aerobic granular sludge based on the ferric oxide and the phosphorus-accumulating bacteria prepared by the invention contains two carbon sources, has a good water treatment effect and an excellent phosphorous removal effect, is beneficial to recovering carbon elements, and is green and environmental-friendly.
Description
Technical field
The invention belongs to material for water treatment technical field is and in particular to a kind of aerobic grain based on ferrum oxide and polyP bacteria
Mud and preparation method thereof.
Background technology
Granular sludge phenomenon is to find in UASB anaerobic system earliest, and aerobic particle mud is that Mishima etc. exists
Find within 1991, aerobic particle mud is a kind of aggregate particle coming from microorganism under the effect of certain hydraulic shear,
Have well-regulated profile, closely knit structure, excellent settling property and anti impulsion load high the advantages of, therefore, process highly concentrated
The aspects such as degree organic wastewater, poisonous and harmful waste water have wide practical use.
Granule sludge stable operation of then, itching well is susceptible to filamentary discharges for a period of time afterwards, microbial activity reduces,
In granule the problems such as nuclear disruption, ultimately result in granule sludge unstability and disintegrate, therefore improve the stable height of aerobic particle mud system
Effect seems particularly significant.A kind of strengthening method for culturing aerobic granular sludge disclosed in Chinese patent CN 102153192B, by
The bottom of gas stripping type batch reactor is surveyed outside and is installed symmetrical permanent magnet, makes inside reactor produce stable static magnetic field, with
The cotton-shaped aerobic activated sludge of Shi Liyong, as kind of a mud, carries out the culture of aerobic particle mud, according to water inlet-aeration-sedimentation-draining
Mode run, it is fast to obtain shaping speed, the aerobic particle mud of good stability.The method is to be added using the magnetic field of static magnetic field
The synthesis speed of fast aerobic particle mud, and by the appropriate growth adding nutrient and trace element guarantee microorganism, system
The standby aerobic particle mud being strengthened.Chinese patent CN104628128B disclosed strengthening aerobic particle mud process stabilizing fortune
The muddy water of row divides discharge method, in the reactor inoculating cotton-shaped activated sludge, using sequencing batch operation mode, including water inlet-exposure
Gas-first sedimentation-spoil disposal-secondary settlement-just return six stages, realizes spoil disposal and water outlet is discharged stage by stage, the mud of this system
Concentration is stable to reach 90% to the clearance of COD and ammonia nitrogen, the method is discharged stage by stage using spoil disposal and water outlet in 10g/L, realizes
Low-intensity enters under water reactor granular sludge and its stable operation.
From above-mentioned prior art, the method for strengthening aerobic particle mud is using the dress improving reactor itself at present
Put structure, research aerobic particle mud itself being strengthened to modified aspect is actually rare.Applicant of the present invention is by magnetic grain
Son and biological inoculum be grafted in aerobic particle mud, from physical effect, chemical effect and biological effect triple in terms of strengthen
Oxygen granule sludge, improves stability and the separation treatment efficiency of aerobic particle mud.
Content of the invention
The technical problem to be solved in the present invention be provide a kind of aerobic particle mud based on ferrum oxide and polyP bacteria and its
Preparation method, using magnetic modified active carbon powder and acetic acid as carbon source, cotton-shaped activated sludge as kind of a mud, through aeration-
Water inlet-draining-precipitation-idle-spoil disposal, obtains the aerobic particle mud based on ferrum oxide and polyP bacteria.The base of present invention preparation
Aerobic particle mud in ferrum oxide and polyP bacteria contains two carbon sources, and aerobic particle mud water treatment efficiency is good, phosphor-removing effect
Excellent, the recyclable recycling of carbon, environmental protection is efficient.
For solving above-mentioned technical problem, the technical scheme is that：
A kind of aerobic particle mud based on ferrum oxide and polyP bacteria, the described aerobic grain based on ferrum oxide and polyP bacteria
Mud includes mud, magnetic particle and biological bacteria, and described magnetic particle is ferrum oxide, and described biological inoculum includes polyP bacteria,
Described make to add magnetic active carbon powder in cotton-shaped activated sludge based on the aerobic particle mud of ferrum oxide and polyP bacteria, and lead to
Enter acetic acid, cultivate the aerobic particle mud based on ferrum oxide and polyP bacteria obtaining.
Preferred as technique scheme, the described carbon source based on ferrum oxide and the aerobic particle mud of polyP bacteria is second
Acid and magnetic active carbon powder.
The present invention also provides a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria, walks including following
Suddenly：
(1) activated carbon powder is added in concentrated nitric acid, be totally submerged, constant temperature stirs 1-2h, filter washing, obtain the first filter
Slag, the first filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, and modified powder activated carbon is added nitric acid molten iron
In solution, sonic oscillation, it is filtrated to get the second filtering residue, after the second filtering residue is dried, high-temperature calcination at 150-200 DEG C, obtain
Magnetic activated carbons powder；
(2) with cotton-shaped activated sludge powder for kind of a mud, it is placed in sequencing batch reactor, add magnetic prepared by step (1)
Active carbon powder, after mix homogeneously, reactor is placed in 30 DEG C of thermostat water bath and runs, in the aeration rate of 0.6L/min
Under, run within one day 2 cycles, a cycle aeration time 8h, intake 5min, draining 5min, precipitate 3-5min, remaining time is not busy
Put, run 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria.
Preferred as technique scheme, in described step (1), ferric nitrate with the mass ratio of modified powder activated carbon is
1：1-6.
Preferred as technique scheme, in described step (1), the particle diameter of magnetic activated carbons powder is 80-300 mesh.
Preferred as technique scheme, in described step (2), cotton-shaped activated sludge powder is municipal sewage plant
Cotton-shaped activated sludge.
Preferred as technique scheme, in described step (2), the concentration of described kind of mud is 7500-8000mg/L, connects
The amount of kind is 4L.
Preferred as technique scheme, in described step (2), in water inlet, contain acetic acid, the volume content of acetic acid is
20-50%.
Preferred as technique scheme, in described step (2), based on ferrum oxide and polyP bacteria aerobic particle mud
Color be yellowish-brown, particle diameter be 0.5mm-2.5mm, be shaped as spherical or oval.
Preferred as technique scheme, in described step (2), based on ferrum oxide and polyP bacteria aerobic particle mud
The content of middle polyP bacteria is 70-80%.
Compared with prior art, the invention has the advantages that：
(1) preparation method of the present invention is to add magnetic active carbon powder in cotton-shaped activated sludge to be cultivated, added
Acetic acid, as second carbon source, improves the treatment effect to sewage for the aerobic particle mud, and acetic acid can promote poly- phosphorus as carbon source
The generation of bacterium, the growth of suppression polyoxy bacterium, improve the phosphor-removing effect of aerobic particle mud, and the settleability of aerobic particle mud
Can be conducive to improving efficiency, the comprehensive decontamination improving aerobic particle mud and stability very well.
(2) magnetic particle, Ke Yi are contained in the aerobic particle mud based on ferrum oxide and polyP bacteria of present invention preparation
Increase electromagnetostatic field in reactor, promote the generation of favourable biological effect, physical effect and chemical effect, can also increase
The activity of enzyme such as dehydrogenase in oxygen granule sludge, accelerates biodegradation process, promotes the nitration reaction of mud, carries further
The efficiency of high denitrogenation dephosphorizing.
(3) in the aerobic particle mud based on ferrum oxide and polyP bacteria of present invention preparation, active carbon powder is also magnetic,
Magnetic particle is ferrum oxide, and ferrum oxide has excellent magnetic characteristic, and after being conducive to, the recycling of activated carbon, solves work
Property charcoal separate difficult problem, reduce the cost of aerobic particle mud, the business efficiency of high aerobic particle mud, be conducive to city
Field is promoted the use of.
Specific embodiment
To describe the present invention, the illustrative examples of the here present invention and explanation below in conjunction with specific embodiment in detail
It is used for explaining the present invention, but not as a limitation of the invention.
Embodiment 1：
(1) activated carbon powder is added in concentrated nitric acid, be totally submerged, constant temperature stirs 1h, filter washing, obtain the first filter
Slag, the first filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, by weight, 1 part of modified powder is lived
Property charcoal add in 1 part of the aqueous solution of ferric nitrate, sonic oscillation 20min, be filtrated to get the second filtering residue, the second filtering residue dried
Afterwards, high-temperature calcination at 150 DEG C, obtaining particle diameter is 80 mesh magnetic activated carbons powder.
(2) with the cotton-shaped activated sludge powder of municipal sewage plant for kind of a mud, the concentration planting mud is 7500mg/L, inoculation
Measure as 4L, be placed in sequencing batch reactor, add the magnetic active carbon powder of 2mg, after mix homogeneously, reactor is placed in 30 DEG C
Thermostat water bath in run, under the aeration rate of 0.6L/min, one day run 2 cycles, a cycle aeration time 8h, enter
Water 5min, contains acetic acid, the volume content of acetic acid is 20%, draining 5min, precipitates 3min, remaining time is not busy in wherein intaking
Put, run 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria, be wherein based on ferrum oxide and polyP bacteria
The color of aerobic particle mud be yellowish-brown, particle diameter is 0.5mmmm, is shaped as ellipse, and the content of polyP bacteria is 70%.
Embodiment 2：
(1) activated carbon powder is added in concentrated nitric acid, be totally submerged, constant temperature stirs 2h, filter washing, obtain the first filter
Slag, the first filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, by weight, 6 parts of modified powder is lived
Property charcoal add in 1 part of the aqueous solution of ferric nitrate, sonic oscillation 30min, be filtrated to get the second filtering residue, the second filtering residue dried
Afterwards, high-temperature calcination at 200 DEG C, obtaining particle diameter is 300 mesh magnetic activated carbons powder.
(2) with the cotton-shaped activated sludge powder of municipal sewage plant for kind of a mud, the concentration planting mud is 8000mg/L, inoculation
Measure as 4L, be placed in sequencing batch reactor, add the magnetic active carbon powder of 3mg, after mix homogeneously, reactor is placed in 30 DEG C
Thermostat water bath in run, under the aeration rate of 0.6L/min, one day run 2 cycles, a cycle aeration time 8h, enter
Water 5min, contains acetic acid, the volume content of acetic acid is 50%, draining 5min, precipitates 5min, remaining time is not busy in wherein intaking
Put, run 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria, be wherein based on ferrum oxide and polyP bacteria
The color of aerobic particle mud be yellowish-brown, particle diameter is 2.5mm, is shaped as spherical, and the content of polyP bacteria is 80%.
Embodiment 3：
(1) activated carbon powder is added in concentrated nitric acid, be totally submerged, constant temperature stirs 1.5h, filter washing, obtain the first filter
Slag, the first filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, by weight, 4 parts of modified powder is lived
Property charcoal add in 1 part of the aqueous solution of ferric nitrate, sonic oscillation 25min, be filtrated to get the second filtering residue, the second filtering residue dried
Afterwards, high-temperature calcination at 180 DEG C, obtaining particle diameter is 100 mesh magnetic activated carbons powder.
(2) with the cotton-shaped activated sludge powder of municipal sewage plant for kind of a mud, the concentration planting mud is 7600mg/L, inoculation
Measure as 4L, be placed in sequencing batch reactor, add the magnetic active carbon powder of 2.5mg, after mix homogeneously, reactor is placed in 30
DEG C thermostat water bath in run, under the aeration rate of 0.6L/min, one day run 2 cycles, a cycle aeration time 8h,
Water inlet 5min, contains acetic acid, the volume content of acetic acid is 30%, draining 5min, precipitates 4min, remaining time is not busy in wherein intaking
Put, run 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria, be wherein based on ferrum oxide and polyP bacteria
The color of aerobic particle mud be yellowish-brown, particle diameter is 1.5mm, is shaped as ellipse, and the content of polyP bacteria is 75%.
Embodiment 4：
(1) activated carbon powder is added in concentrated nitric acid, be totally submerged, constant temperature stirs 1h, filter washing, obtain the first filter
Slag, the first filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, by weight, 5 parts of modified powder is lived
Property charcoal add in 1 part of the aqueous solution of ferric nitrate, sonic oscillation 30min, be filtrated to get the second filtering residue, the second filtering residue dried
Afterwards, high-temperature calcination at 150 DEG C, obtaining particle diameter is 200 mesh magnetic activated carbons powder.
(2) with the cotton-shaped activated sludge powder of municipal sewage plant for kind of a mud, the concentration planting mud is 8000mg/L, inoculation
Measure as 4L, be placed in sequencing batch reactor, add the magnetic active carbon powder of 2mg, after mix homogeneously, reactor is placed in 30 DEG C
Thermostat water bath in run, under the aeration rate of 0.6L/min, one day run 2 cycles, a cycle aeration time 8h, enter
Water 5min, contains acetic acid, the volume content of acetic acid is 35%, draining 5min, precipitates 4min, remaining time is not busy in wherein intaking
Put, run 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria, be wherein based on ferrum oxide and polyP bacteria
The color of aerobic particle mud be yellowish-brown, particle diameter is 1mm, is shaped as spherical, and the content of polyP bacteria is 76%.
Embodiment 5：
(1) activated carbon powder is added in concentrated nitric acid, be totally submerged, constant temperature stirs 2h, filter washing, obtain the first filter
Slag, the first filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, by weight, 2 parts of modified powder is lived
Property charcoal add in 1 part of the aqueous solution of ferric nitrate, sonic oscillation 30min, be filtrated to get the second filtering residue, the second filtering residue dried
Afterwards, high-temperature calcination at 150- DEG C, obtaining particle diameter is 250 mesh magnetic activated carbons powder.
(2) with the cotton-shaped activated sludge powder of municipal sewage plant for kind of a mud, the concentration planting mud is 8000mg/L, inoculation
Measure as 4L, be placed in sequencing batch reactor, add the magnetic active carbon powder of 2mg, after mix homogeneously, reactor is placed in 30 DEG C
Thermostat water bath in run, under the aeration rate of 0.6L/min, one day run 2 cycles, a cycle aeration time 8h, enter
Water 5min, contains acetic acid, the volume content of acetic acid is 40%, draining 5min, precipitates 5min, remaining time is not busy in wherein intaking
Put, run 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria, be wherein based on ferrum oxide and polyP bacteria
The color of aerobic particle mud be yellowish-brown, particle diameter is 2mm, is shaped as ellipse, and the content of polyP bacteria is 78%.
Embodiment 6：
(1) activated carbon powder is added in concentrated nitric acid, be totally submerged, constant temperature stirs 2h, filter washing, obtain the first filter
Slag, the first filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, by weight, 3 parts of modified powder is lived
Property charcoal add in 1 part of the aqueous solution of ferric nitrate, sonic oscillation 20min, be filtrated to get the second filtering residue, the second filtering residue dried
Afterwards, high-temperature calcination at 150 DEG C, obtaining particle diameter is 150 mesh magnetic activated carbons powder.
(2) with the cotton-shaped activated sludge powder of municipal sewage plant for kind of a mud, the concentration planting mud is 8000mg/L, inoculation
Measure as 4L, be placed in sequencing batch reactor, add the magnetic active carbon powder of 2.5mg, after mix homogeneously, reactor is placed in 30
DEG C thermostat water bath in run, under the aeration rate of 0.6L/min, one day run 2 cycles, a cycle aeration time 8h,
Water inlet 5min, contains acetic acid, the volume content of acetic acid is 45%, draining 5min, precipitates 5min, remaining time is not busy in wherein intaking
Put, run 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria, be wherein based on ferrum oxide and polyP bacteria
The color of aerobic particle mud be yellowish-brown, particle diameter is 2mm, is shaped as spherical, and the content of polyP bacteria is 80%.
After testing, the COD clearance based on ferrum oxide and the aerobic particle mud of polyP bacteria of embodiment 1-6 preparation, ammonia
The result of nitrogen removal efficiency and tp removal rate is as follows：
Run 30 days：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| COD clearance (%) | 96 | 98 | 97 | 98 | 96 | 97 |
| Ammonia nitrogen removal frank (%) | 100 | 100 | 100 | 100 | 100 | 100 |
| Tp removal rate (%) | 92 | 95 | 94 | 93 | 94 | 95 |
Run 60 days：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| COD clearance (%) | 92 | 97 | 95 | 96 | 96 | 95 |
| Ammonia nitrogen removal frank (%) | 99 | 98 | 99 | 98 | 99 | 99 |
| Tp removal rate (%) | 90 | 94 | 93 | 92 | 91 | 93 |
Run 120 days：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| COD clearance (%) | 85 | 90 | 88 | 89 | 87 | 85 |
| Ammonia nitrogen removal frank (%) | 99 | 97 | 99 | 97 | 97 | 98 |
| Tp removal rate (%) | 86 | 88 | 87 | 86 | 88 | 87 |
As seen from the above table, the COD clearance based on ferrum oxide and the aerobic particle mud of polyP bacteria of present invention preparation, ammonia
Nitrogen removal efficiency and tp removal rate are high, and under long-play COD clearance, ammonia nitrogen removal frank and tp removal rate decline not
Substantially, illustrate that aerobic particle mud process performance based on ferrum oxide and polyP bacteria and stability are good, additionally, being based on ferrum oxide
With the response rate of activated carbon in the aerobic particle mud of polyP bacteria up to more than 90%.
Above-described embodiment only principle of the illustrative present invention and its effect, not for the restriction present invention.Any ripe
The personage knowing this technology all can carry out modifications and changes without prejudice under the spirit and the scope of the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
All equivalent modifications becoming or change, must be covered by the claim of the present invention.
Claims (10)
1. a kind of aerobic particle mud based on ferrum oxide and polyP bacteria it is characterised in that：Described based on ferrum oxide with polyP bacteria
Aerobic particle mud include mud, magnetic particle and biological bacteria, described magnetic particle be ferrum oxide, described biological inoculum bag
Include polyP bacteria, described make to add cotton-shaped activity dirty in magnetic active carbon powder based on the aerobic particle mud of ferrum oxide and polyP bacteria
In mud, and it is passed through acetic acid, cultivate the aerobic particle mud based on ferrum oxide and polyP bacteria obtaining.
2. a kind of aerobic particle mud based on ferrum oxide and polyP bacteria according to claim 1 it is characterised in that：Described
Carbon source based on ferrum oxide and the aerobic particle mud of polyP bacteria is acetic acid and magnetic active carbon powder.
3. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria is it is characterised in that comprise the following steps：
(1) activated carbon powder is added in concentrated nitric acid, is totally submerged, constant temperature stirs 1-2h, filter washing, obtain the first filtering residue,
First filtering residue is dried 24h at 105 DEG C, obtains modified powder activated carbon, modified powder activated carbon is added ferric nitrate water-soluble
In liquid, sonic oscillation, it is filtrated to get the second filtering residue, after the second filtering residue is dried, high-temperature calcination at 150-200 DEG C, obtain magnetic
Property activated carbon powder；
(2) with cotton-shaped activated sludge powder for kind of a mud, it is placed in sequencing batch reactor, add magnetic activity prepared by step (1)
Carbon powder, after mix homogeneously, reactor is placed in 30 DEG C of thermostat water bath and runs, under the aeration rate of 0.6L/min, one
It runs 2 cycles, a cycle aeration time 8h, intake 5min, draining 5min, precipitates 3-5min, remaining time leaves unused, fortune
Row 18 days, spoil disposal, obtain the aerobic particle mud based on ferrum oxide and polyP bacteria.
4. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria according to claim 3, it is special
Levy and be：In described step (1), ferric nitrate is 1 with the mass ratio of modified powder activated carbon：1-6.
5. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria according to claim 3, it is special
Levy and be：In described step (1), the particle diameter of magnetic activated carbons powder is 80-300 mesh.
6. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria according to claim 3, it is special
Levy and be：In described step (2), cotton-shaped activated sludge powder is the cotton-shaped activated sludge of municipal sewage plant.
7. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria according to claim 3, it is special
Levy and be：In described step (2), the concentration of described kind of mud is 7500-8000mg/L, and inoculum concentration is 4L.
8. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria according to claim 3, it is special
Levy and be：In described step (2), contain acetic acid in water inlet, the volume content of acetic acid is 20-50%.
9. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria according to claim 3, it is special
Levy and be：In described step (2), the color based on ferrum oxide and the aerobic particle mud of polyP bacteria is yellowish-brown, and particle diameter is
0.5mm-2.5mm, is shaped as spherical or oval.
10. a kind of preparation method based on ferrum oxide and the aerobic particle mud of polyP bacteria according to claim 3, it is special
Levy and be：In described step (2), in the aerobic particle mud based on ferrum oxide and polyP bacteria, the content of polyP bacteria is 70-80%.
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| CN201610875156.3A CN106380003A (en) | 2016-09-30 | 2016-09-30 | Aerobic granular sludge based on ferric oxide and phosphorus-accumulating bacteria, and preparation method thereof |
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| CN110482807A (en) * | 2019-08-14 | 2019-11-22 | 哈尔滨工业大学（深圳） | A kind of bed mud covering column of black-odor riverway and preparation method thereof |
| CN110577219A (en) * | 2019-09-29 | 2019-12-17 | 南京工程学院 | Magnetic sludge straw-based activated carbon and preparation method thereof |
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| CN110577219A (en) * | 2019-09-29 | 2019-12-17 | 南京工程学院 | Magnetic sludge straw-based activated carbon and preparation method thereof |
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Application publication date: 20170208 |