CN109019833A - A kind of biologic packing material, the preparation method of biologic packing material, sewage disposal system - Google Patents
A kind of biologic packing material, the preparation method of biologic packing material, sewage disposal system Download PDFInfo
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- CN109019833A CN109019833A CN201811217847.XA CN201811217847A CN109019833A CN 109019833 A CN109019833 A CN 109019833A CN 201811217847 A CN201811217847 A CN 201811217847A CN 109019833 A CN109019833 A CN 109019833A
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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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Abstract
The present invention relates to technical field of sewage, and in particular to a kind of biologic packing material, including following components: hydrophilic substrate, nutritional agents, attachment filler, adhesive and magnetic powder, and the hydrophilic substrate is that polyvinyl alcohol and polypropylene phthalein amine mix.The biologic packing material has the advantages that large specific surface area, good hydrophilic property, nutrient source sustained release and can manufacture magnetic light electrolysis environment, it is strong to the capturing ability of the microorganism in sewage, be conducive to bacterium colony apposition growth, can have good flocculation adsorption and oxidation to Organic substance in water, and then form the biomembrane of compact structure, it can promote microorganism growth and activation bioactivity, shorten operation of sewage disposal system and start the time, reduce filter tank volume and reduce occupied area.The present invention also provides a kind of preparation methods of above-mentioned biologic packing material, and using the sewage disposal system of the biologic packing material.
Description
Technical field
The present invention relates to technical field of sewage, and in particular to the preparation of a kind of biologic packing material and the biologic packing material
Method, the present invention also provides a kind of sewage disposal systems of application biologic packing material.
Background technique
Currently, filler promotes biofilm formation mainly to increase packing specific area in well known sewage disposal process.
The biologic packing material of water process can retain the organic matter in sewage, it is often more important that provide " the load of microorganism, flora attachment
Body " decomposes the polluter in water body using bacterium colony, and then the pollutant in water body of degrading consequently facilitating forming biomembrane.It fills out
Material is used as microbe carrier, is the core of biomembrane process, performance directly affects and restrict sewage treating efficiency.
The type of filler is varied in the prior art, but in practical applications, and most of filler passes through polypropylene, poly- second
The materials such as alkene, polyvinyl chloride or polyester are made, and material surface hydrophily is poor, lead to that biologic packing material moistened surface is poor, mass transfer
Performance is low, fluidity poor, attached growth of microorganisms develops difference slowly, to generate, bio-film colonization speed is slow, biofilm is thin, eventually leads to
To the problem of Organic substance in water, nitro pollutant process ability difference.For this purpose, a kind of Novel biofilm carrier is designed, it is existing to improve
Filler product surface adhesion force, to improve sewage treating efficiency, be of great significance.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of biologic packing material, service life increase good with surface adhesion force,
Biofilm is fast, biofilm development updates good advantage.
To achieve the above object, the embodiment of the invention provides a kind of biologic packing materials, including following components: hydrophilic substrate,
Nutritional agents, attachment filler, adhesive and magnetic powder, the hydrophilic substrate are that polyvinyl alcohol and polypropylene phthalein amine mix.
As an improvement of the above technical solution, the nutritional agents is in flour, starch, gelatin, chitin or agarose
It is one or more.
As an improvement of the above technical solution, the attachment filler be barium carbonate and sodium bicarbonate, calcium carbonate, consumption shell powder,
One of calcium alginate, active carbon are a variety of.
As an improvement of the above technical solution, described adhesive is polyurethane solutions and macromolecular adhesive.
As an improvement of the above technical solution, the magnetic powder is ferroferric oxide magnetic powder, manganese-zinc ferrite and Ni Zn ferrimagnet
One of body is a variety of.
It as an improvement of the above technical solution, also include enzymatic activity regulator in biologic packing material.
Biologic packing material large specific surface area in above-mentioned technical proposal, have hydrophily, nutrient source sustained release, can manufacture it is magnetic micro-
Electrolytic environments, it is strong to the capturing ability of the microorganism in sewage, be conducive to bacterium colony apposition growth, can have to Organic substance in water
Good flocculation adsorption and oxidisability, and then form the biomembrane of compact structure, can promote microorganism growth and activation bioactivity,
The operation of sewage disposal system starting time can be shortened, reduce filter tank volume and reduce occupied area.
The embodiment of the invention also provides a kind of preparation methods of biologic packing material, comprising the following steps:
Soluble polyurethane is added in boiling water and dissolves by step 1, obtains soluble polyurethane solution, then plus
Enter maleic anhydride, cumyl peroxide, gelatin, be sufficiently mixed, obtains in polyurethane solutions；
Step 2: enzymatic activity regulator, agarose, chitin, macromolecular adhesive, magnetic powder are added to step 1
In polyurethane solutions, after solidification, preliminary filler one is obtained；
Step 3: by preliminary filler one, hydrophilic substrate, barium carbonate and sodium bicarbonate, consumption shell powder and seaweed in step 2
Sour calcium is uniformly mixed, and is carried out high-temperature digestion granulation using extrusion molding and is obtained biologic packing material product.
As an improvement of the above technical solution, in step 1, the weight ratio between soluble polyurethane and boiling water is
1:4~10.
As an improvement of the above technical solution, in step 2, after each component mixing, 22 DEG C~25 DEG C are cooled to, drop
Warm speed is in 1 DEG C/min~5 DEG C/min.
The preparation method is by the bioaffinities such as calcium alginate, starch substance and polyvinyl alcohol containing hydrophilic radical, poly- third
Alkene phthalein amine and magnetic powder etc. are introduced into high-molecular biologic filler, and preparation process is simple, which can be at after suitably magnetizing
For the affine good hydrophilic active magnetic seed filler of biology, heat dissipation performance is high, resistance is small, gas distribution performance is good, easy to be filmed, simultaneously because close
The presence of water base material is able to suppress the generation of biologic packing material blibbing, is conducive to the flourish of microorganism, the surface of carrier
Roughness is big, is a kind of ideal water-treatment biological filler.
It is described the present invention also provides a kind of sewage disposal system using above-mentioned biologic packing material, including biochemical treatment tank
There is biologic packing material to hang area, the biologic packing material suspension is hung with biologic packing material in area, and the biology is filled out in biochemical treatment tank
Material has inner annular plate and ripple outside plate, and connection fin is provided between the inner annular plate and ripple outside plate.
The sewage disposal system devises the biologic packing material and suspension assembly of a kind of specific structure, the structure of the biologic packing material
Design increases filler surface roughness, easy to be filmed and under waterpower collision can voluntarily demoulding, make in conjunction with suspension assembly
The reliability that the fixation of biologic packing material can be increased after guarantees the biologic packing material normal use under drainage flow environment.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of sewage disposal system in the embodiment of the present invention.
Fig. 2 is a kind of schematic diagram of internal structure of sewage disposal system in the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of biologic packing material in the embodiment of the present invention.
Fig. 4 is biologic packing material and the schematic diagram after suspension assembly cooperation in the embodiment of the present invention.
Fig. 5 is biologic packing material and the schematic diagram of internal structure after suspension assembly cooperation in the embodiment of the present invention.
In figure: 10- biochemical treatment tank, 11- biologic packing material suspension area, 12- wastewater inlet, 13- filter screen, 14- fixed frame,
15- drug addition port, 20- inclined plate sedimentation pond, 21- outlet of sewer, the bottom 22- inclined plate, 30- biologic packing material, 31- inner annular plate,
32- connection fin, 33- ripple outside plate, 40- hanger bar, 41- support plate, 42- bottom plate, 43- weight body, 44- foot guard are soft
Pad.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific embodiment, those skilled in the art can be by this specification institute
The content of exposure is understood other advantages and efficacy of the present invention easily.
It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification to be taken off
The content shown is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the present invention
Under the effect of can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain the model that can cover
In enclosing.Meanwhile in this specification cited such as "inner", "outside", "upper", "lower" term, be merely convenient to the bright of narration
, rather than to limit the scope of the invention, relativeness is altered or modified, and is changing technology contents without essence
Under, when being also considered as the enforceable scope of the present invention.
In the description of following embodiments unless specifically defined or limited otherwise, the terms such as term " setting ", " connection "
It shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or is integral；It can be machinery
Connection, can also can be the connection inside two elements or the interaction of two elements indirectly connected through an intermediary
Relationship, unless otherwise restricted clearly.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
The embodiment of the present invention provides firstly a kind of biologic packing material, including following components: hydrophilic substrate, nutritional agents, attachment
Filler, adhesive and magnetic powder, the hydrophilic substrate are that polyvinyl alcohol and polypropylene phthalein amine mix；Nutritional agents is flour, forms sediment
One of powder, gelatin, chitin or agarose are a variety of, and nutritional agents can provide nutritional ingredient for the growth of bacterium colony, due to
These nutritional ingredients are added in the preparation process of biologic packing material, carry out to delay using rear nutriment in being hanging to sewage
On The Drug Release；Attachment filler is one of barium carbonate and sodium bicarbonate, calcium carbonate, consumption shell powder, calcium alginate, active carbon or more
Kind, the effect of attachment filler mainly increases the specific surface area of biologic packing material, adheres to convenient for microorganism；Adhesive is that polyurethane is molten
Liquid and macromolecular adhesive, the effect of adhesive are that each component is bonded in biologic packing material preparation process；Magnetic powder is four oxidations
One of three ferromagnetic powders, manganese-zinc ferrite and nickel-zinc ferrite are a variety of, the life that magnetic powder can be such that the bacterium colony after attachment grows into
Light electrolysis effect is generated on object film, the degradation speed on biological membrane electrode can achieve 5 times of normal COD degradation speed, raw
Electric field between object membrane electrode filler electrode, forms electrophoretic action to microorganism, enhances absorption of the microorganism on filler,
Microorganism is accelerated in the growth of filler surface.To the emblem biology that in the processing experiment of wastewater from chemical industry, common fillers need 20 days
Biofilm formation growth process, 7 day time can be completed on biological membrane electrode.
It further, also include enzymatic activity regulator in biologic packing material.The density of biologic packing material is 0.96g/cm3~
0.98g/cm3。
Its large specific surface area can be made by increasing barium carbonate and sodium bicarbonate, consumption shell powder, calcium alginate, agarose in biologic packing material
Big increase, rough surface, microorganism adhesion property is strong and stablizes.The powders such as flour, starch and calcium carbonate are for wastewater treatment
Active biological filler not only provides proper nutrition source for microorganism, more physical attachment points can be also provided for microorganism, together
When can also improve the hydrophily of filler, it is easier to microorganism growth accelerates start-up and improves water treatment efficiency.Chitin,
The addition of enzymatic activity regulator, macromolecular adhesive, gelatin not only makes filler have acid and alkali-resistance, ageing-resistant, resistance to biodegrade
Chemical property and large specific surface area, the physical features such as light-weight, biomembrane adhesion property is good, and played semi soft packing not
Conglomeration, the air water redistribution advantage that ability is strong, oxygen transfer is high-efficient.The inside nutrient source of filler is set to walk unhurriedly release simultaneously, use
Service life increases, while biologic packing material biofilm is fast, demoulding is easy, biofilm development updates good, resistance to high load capacity impact, COD removal
Rate is high.
Parts by weight of the above-mentioned each component in biologic packing material are as follows:
40 parts~100 parts of hydrophilic substrate
Polyvinyl alcohol
Polypropylene phthalein amine
10 parts~20 parts of nutritional agents
Flour
Starch
Gelatin
Chitin
Agarose
10 parts~30 parts of attachment filler
Barium carbonate
Sodium bicarbonate
Calcium carbonate
Consume shell powder
Calcium alginate
Active carbon
Adhesive
10 parts~20 parts of polyurethane (maleic anhydride and cumyl peroxide that include comprising preparation process)
2 parts~7 parts of macromolecular adhesive
8 parts~15 parts of magnetic powder
Ferroferric oxide magnetic powder
Manganese-zinc ferrite
Nickel-zinc ferrite
3 parts~5 parts of enzymatic activity regulator
It is illustrated below with reference to the preparation method of specific biologic packing material.
Embodiment one
The each component parts by weight of biologic packing material are as follows: polyvinyl alcohol and totally 40 parts of polypropylene phthalein amine；Soluble polyurethane
10 parts；Barium carbonate and totally 10 parts of sodium bicarbonate；Consume shell powder, totally 5 parts of calcium alginate；4 parts of maleic anhydride, cumyl peroxide
0.2 part；1 part of gelatin；10 parts of magnetic powder；1 part of chitin；3 parts of enzymatic activity regulator；10 parts of agarose；Macromolecular adhesive 5
Part.The preparation method of the biologic packing material the following steps are included:
Soluble polyurethane is added in boiling water and dissolves by step 1, obtains soluble polyurethane solution, then plus
Enter maleic anhydride, cumyl peroxide, gelatin, be sufficiently mixed, obtains in polyurethane solutions；Soluble polyurethane in the step
Weight ratio between boiling water is 1:4；
Step 2: enzymatic activity regulator, agarose, chitin, macromolecular adhesive, magnetic powder are added to step 1
In polyurethane solutions, 22 DEG C~25 DEG C are cooled to, cooling rate can control in 1 DEG C/min~5 DEG C/min, after solidification, obtain
Preliminary filler one；
Step 3: by preliminary filler one, hydrophilic substrate, barium carbonate and sodium bicarbonate, consumption shell powder and seaweed in step 2
Sour calcium is uniformly mixed, and is carried out high-temperature digestion granulation using extrusion molding and is obtained biologic packing material product.
Embodiment two
The each component parts by weight of biologic packing material are as follows: polyvinyl alcohol and totally 60 parts of polypropylene phthalein amine；Soluble polyurethane
12 parts；Barium carbonate and totally 12 parts of sodium bicarbonate；Consume shell powder, totally 8 parts of calcium alginate；4 parts of maleic anhydride, cumyl peroxide
0.2 part；2 parts of gelatin；10 parts of magnetic powder；1 part of chitin；3 parts of enzymatic activity regulator；10 parts of agarose；Macromolecular adhesive 5
Part.Preparation step is the same as embodiment one.
Embodiment three
The each component parts by weight of biologic packing material are as follows: polyvinyl alcohol and totally 80 parts of polypropylene phthalein amine；Soluble polyurethane
14 parts；Barium carbonate and totally 15 parts of sodium bicarbonate；Consume shell powder, totally 10 parts of calcium alginate；4 parts of maleic anhydride, cumyl peroxide
0.2 part；2 parts of gelatin；12 parts of magnetic powder；1 part of chitin；3 parts of enzymatic activity regulator；10 parts of agarose；Macromolecular adhesive 5
Part.Preparation step is the same as embodiment one.
Example IV
The each component parts by weight of biologic packing material are as follows: polyvinyl alcohol and totally 100 parts of polypropylene phthalein amine；Soluble polyurethane
15 parts；Barium carbonate and totally 15 parts of sodium bicarbonate；Consume shell powder, totally 10 parts of calcium alginate；4 parts of maleic anhydride, cumyl peroxide
0.35 part；3.5 parts of gelatin；12 parts of magnetic powder；2 parts of chitin；5 parts of enzymatic activity regulator；10 parts of agarose；Macromolecular adhesive
5 parts.Preparation step is the same as embodiment one.
Embodiment five
The each component parts by weight of biologic packing material are as follows: polyvinyl alcohol and totally 100 parts of polypropylene phthalein amine；Soluble polyurethane
15 parts；Barium carbonate and totally 20 parts of sodium bicarbonate；Consume shell powder, totally 8 parts of calcium alginate；4 parts of maleic anhydride, cumyl peroxide
0.35 part；3.5 parts of gelatin；12 parts of magnetic powder；2 parts of chitin；5 parts of enzymatic activity regulator；10 parts of agarose；Macromolecular adhesive
5 parts.Preparation step is the same as embodiment one.
The biologic packing material that the biologic packing material that above-mentioned each group embodiment obtains is related to has hydrophily, nutrient source sustained release, can make
Make magnetic light electrolysis environment.This kind of biologic packing material is strong to the capturing ability of microorganism, is conducive to dominant bacterias such as coccus, bacillus
Zoogloea apposition growth, there is good flocculation adsorption and oxidation susceptibility and compact structure to Organic substance in water so as to be formed
Biomembrane, can promote microorganism growth and activation bioactivity, can shorten filter bed operation starting the time can reduce filter tank volume and
Reduce occupied area.
It include enzymatic activity regulator in biologic packing material, this filler is that life is added using natural clay and municipal sludge
The water treatment filler to microorganism growth with facilitation that the calcinings such as object growth promoter, pore creating material produce, this is filled out
Expect that aperture surface area, surface roughness are larger, is conducive to the flourish of microorganism.The surface roughness of carrier is big, is a kind of reason
The water treatment biological carrier filler thought.
As shown in Figure 1, Figure 2, Figure 3 shows, the invention further relates to a kind of sewage disposal systems using biologic packing material, including biochemistry
Processing pond 10, biochemical treatment tank 10 is interior, and there is biologic packing material to hang area 11, and biologic packing material suspension is hung with biologic packing material in area 11
30, biologic packing material 30 has inner annular plate 31 and ripple outside plate 33, and connection is provided between inner annular plate 31 and ripple outside plate 33
Fin 32.31 surface of inner annular plate is smooth, makes filler in an anaerobic environment can secured biofilm；Outside inner annular plate 31 and ripple
Plate 33 is fixed into porous discoid body by connecting fin 32, and this structure can increase the contact area of biologic packing material, be easy to
It is used under fluidisation environment.
33 edge of ripple outside plate is corrugated, to expand the surface area of biologic packing material, thus increase surface biofilm amount,
One timing of pool capacity improves the removal amount of pollutant and when one timing of water inlet pollutant concentration, reduces sludge loading, improves
Wastewater treatment efficiency；Increase surface roughness, easy to be filmed and under waterpower collision can voluntarily demoulding, facilitate removal outer layer old
Change biomembrane, prevents biofilm development blocked up.
Further, as shown in Figure 4, Figure 5, through there is suspension assembly in inner annular plate 31, suspension assembly includes running through ring
The hanger bar 40 of shape inner panel 31 connects the support plate 41 of 32 1 side bottom of fin with abutting to, and is provided with bottom plate below support plate 41
42, it is provided with weight body 43 between the bottom plate 42 and support plate 41, is provided with above biologic packing material suspension area 11 logical outstanding
The fixed frame 14 of hanging component suspension.Suspension assembly includes hanger bar 40 and support plate 41 in the preferred embodiment, and hanger bar 40 runs through
It is hanging to after inner annular plate 31 on fixed frame 14, the bottom of biologic packing material 30 is constrained by the backstop of support plate 41.Wherein hanger bar
It can be in series with multiple groups biologic packing material 30 on 40, improve efficiency.The effect of weight body 43 between bottom plate 42 and support plate 41 is
Improve the stability of biologic packing material 30 and suspension assembly in biochemical treatment tank 10.In order to avoid 42 bottom of bottom plate directly contacts
To bottom of pond, foot guard cushion 44 can be provided with below bottom plate 42, by foot guard cushion 44 in bottom of pond and suspension group
Flexible support is formed between part, it is ensured that will not fierce expansion bottom of pond between suspension assembly and biologic packing material 30.
10 side of biochemical treatment tank is provided with wastewater inlet 12, and the side far from wastewater inlet 12 has on biochemical treatment tank 10
There is inclined plate sedimentation pond 20,20 side of inclined plate sedimentation pond offers outlet of sewer 21, and 20 bottom of inclined plate sedimentation pond has connection
To the bottom inclined plate 22 of biochemical treatment tank 10.The effect of bottom inclined plate 22 is that the film to fall off on biologic packing material is carried out backstop, is made
These films to fall off are in the area deposition, convenient for centralized processing.
Further, 10 inside of biochemical treatment tank is provided with filter screen 13 close to a side-lower of wastewater inlet 12, the mistake
Strainer is mainly used for the biggish impurity of band-like or volume being mingled in filter sewage, it is avoided to enter in biochemical treatment tank 10
It is wound on biologic packing material 30, to reduce microorganism deposit efficiency.
10 side of biochemical treatment tank is additionally provided with drug addition port 15, can be to biochemical treatment tank by drug addition port 15
10 investments, which facilitate the nutritional ingredient that bacterium colony is grown or other, facilitates flocculated chemical reagent.
Although above having made more description in detail to the present invention with generality explanation and specific embodiment,
On the basis of the embodiment of the present invention, it can be made some modifications or improvements, this be to those skilled in the art it is aobvious and
It is clear to.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to that the present invention claims guarantors
The range of shield.
Claims (10)
1. a kind of biologic packing material, which is characterized in that including following components: hydrophilic substrate, nutritional agents, attachment filler, adhesive and
Magnetic powder, the hydrophilic substrate are that polyvinyl alcohol and polypropylene phthalein amine mix.
2. a kind of biologic packing material as described in claim 1, which is characterized in that the nutritional agents is flour, starch, gelatin, first
One of shell element and agarose are a variety of.
3. a kind of biologic packing material as described in claim 1, which is characterized in that the attachment filler is barium carbonate and bicarbonate
One of sodium, calcium carbonate, consumption shell powder, calcium alginate and active carbon are a variety of.
4. a kind of biologic packing material as described in claim 1, which is characterized in that described adhesive is polyurethane solutions and macromolecule
Adhesive.
5. a kind of biologic packing material as described in claim 1, which is characterized in that the magnetic powder is ferroferric oxide magnetic powder, MnZn
One of ferrite and nickel-zinc ferrite are a variety of.
6. a kind of biologic packing material as described in claim 1, which is characterized in that also include that enzymatic activity is adjusted in biologic packing material
Agent.
7. such as the preparation method of biologic packing material of any of claims 1-6, which comprises the following steps:
Soluble polyurethane is added in boiling water and dissolves by step 1, obtains soluble polyurethane solution, horse is then added
Come acid anhydrides, cumyl peroxide, gelatin, be sufficiently mixed, obtains in polyurethane solutions；
Step 2: enzymatic activity regulator, agarose, chitin, macromolecular adhesive, magnetic powder to be added to the poly- ammonia of step 1
In ester solution, 22 DEG C~25 DEG C, after solidification are cooled to, obtains preliminary filler one；
Step 3: by preliminary filler one and hydrophilic substrate, barium carbonate and sodium bicarbonate, consumption shell powder and calcium alginate in step 2
It is uniformly mixed, carries out high-temperature digestion granulation using extrusion molding and obtain biologic packing material product.
8. the preparation method of biologic packing material as claimed in claim 7, which is characterized in that in step 1, soluble polyurethane
Weight ratio between boiling water is 1:4~10.
9. the preparation method of biologic packing material as claimed in claim 7, which is characterized in that in step 2, mixed in each component
Afterwards, 22 DEG C~25 DEG C are cooled to, cooling rate is in 1 DEG C/min~5 DEG C/min.
10. a kind of sewage disposal system using biologic packing material of any of claims 1-6, which is characterized in that packet
It includes biochemical treatment tank (10), there is biologic packing material suspension area (11), the biologic packing material suspension in the biochemical treatment tank (10)
It is hung with biologic packing material (30) in area (11), the biologic packing material (30) has inner annular plate (31) and ripple outside plate (33), institute
It states and is provided with connection fin (32) between inner annular plate (31) and ripple outside plate (33).
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| CN111847642A (en) * | 2020-06-30 | 2020-10-30 | 桂林理工大学 | High-flow carrier material for water treatment microorganisms, preparation method and water treatment method |
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| CN111204864B (en) * | 2020-01-21 | 2022-04-19 | 安徽环境科技集团股份有限公司 | MBBR filler and preparation method thereof |
| CN111847642A (en) * | 2020-06-30 | 2020-10-30 | 桂林理工大学 | High-flow carrier material for water treatment microorganisms, preparation method and water treatment method |
| CN111847642B (en) * | 2020-06-30 | 2022-07-05 | 桂林理工大学 | High-flow carrier material for water treatment microorganisms, preparation method and water treatment method |
| CN112723530A (en) * | 2020-12-11 | 2021-04-30 | 温州大学 | Preparation method of immobilized composite filler |
| CN114835255A (en) * | 2022-05-24 | 2022-08-02 | 湖南五方环境科技研究院有限公司 | Composite bioreactor based on iron-carbon carrier and preparation and sewage treatment method thereof |
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