CN108706719B - A kind of filler and preparation method thereof for fluid bed biological film method - Google Patents

A kind of filler and preparation method thereof for fluid bed biological film method Download PDF

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CN108706719B
CN108706719B CN201810301172.0A CN201810301172A CN108706719B CN 108706719 B CN108706719 B CN 108706719B CN 201810301172 A CN201810301172 A CN 201810301172A CN 108706719 B CN108706719 B CN 108706719B
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parts
filler
fluid bed
microballoon
internal layer
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CN108706719A (en
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徐雄剑
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SICHUAN WEISIDA MEDICAL EQUIPMENT Co.,Ltd.
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Yueqing Fengjie Electronic Technology Co Ltd
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Priority to CN201910278008.7A priority patent/CN109896620A/en
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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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/105—Characterized by the chemical composition
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/105—Characterized by the chemical composition
    • C02F3/108—Immobilising gels, polymers or the like
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds
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    • C08J9/145—Halogen containing compounds containing carbon, halogen and hydrogen only only chlorine as halogen atoms
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    • C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
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    • C08J2203/00—Foams characterized by the expanding agent
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    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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    • C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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    • C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
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    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
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    • C08K2003/325—Calcium, strontium or barium phosphate
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Abstract

The present invention provides a kind of filler for fluid bed biological film method, which is characterized in that the filler includes that outer layer mesh bag and internal layer fill microballoon；The internal layer filling microballoon includes 5-10 parts of carbonization rice husk powder, 5-10 parts of diatomite, 5-10 parts of calcium hydroxy phosphate, 40-60 parts of PVC elastomer, 20-40 parts of polyvinyl alcohol resin, 2-6 parts of stearic acid, 1-5 parts of polyacrylamide, 10-20 parts of foaming agent in parts by mass；The outer layer mesh bag is thermoplastic resin, is bonded in internal layer by heat treatment and fills on microsphere surface.Filler of the invention is constructed with simple structure, can be reduced production cost, and filler environmental protection is degradable, biofilm amount is big, handles the high-efficient of sewage.

Description

A kind of filler and preparation method thereof for fluid bed biological film method
Technical field
The invention belongs to sewage treatment fields, and in particular to a kind of filler and its preparation side for fluid bed biological film method Method.
Background technique
Ammonia nitrogen in sewage is primary pollution source, currently, being directed to ammonia nitrogen, main minimizing technology has physical absorption, catalysis oxygen Change and Biological Pretreatment method.Ammonia nitrogen is polar molecule, need to be modified to common adsorbents, such as active carbon, zeolite, haydite, And adsorption effect is limited, reaching saturation need to be regenerated, and comprehensive treatment effect and economy are relatively suitable for burst Pollution, unsuitable As conventional treatment method；Ammonia nitrogen is extremely stable in water body, and general oxidant is difficult to aoxidize it, general using catalysis oxygen Change, but ineffective and operating cost is high；Consider from treatment effect and economy, biological treatment is that optimal selection is also universal Method.Activated sludge process and biofilm are often used in biological treatment.
MBBR (Moving Bed Bio lm Reactor, moving bed biofilm reactor) is by throwing into reactor Add a certain number of floating stuffings, improves biomass and biological species in reactor, so that the treatment effeciency of reactor is improved, Floating stuffing specific gravity, with water body similar density before and after biofilm, makes it that can suspend in water close to water, compares fluidized-bed process, It is low to fluidize power, by being aerated on a small quantity, so that it may realize that filler fluidizes completely, realize efficient process.The essence of MBBR technique be according to Biomembrane principle is run by activated sludge mode.
Biologic packing material is one of core of biological wastewater treatment technology, its hydrophily and bioaffinity will directly affect Attachment, the growth of microorganism, to influence the treatment effect of waste water.Currently, in the market common polyvinyl chloride biologic packing material by It is poor in hydrophilicity and bioaffinity, cause to exist not in terms of the tightness of biofilm speed, biofilm amount and film and filler Foot, to the polymeric material of PVC(vinyl) appropriate substance be added in filler carry out blending and modifying, it is expected to improve filler mass transfer, 2 Biofilm and water treatmenting performance.In addition the impact strength of PVC only has 2-5kJ/m, has impact strength is low, thermal stability is poor etc. to lack Point, causes the filler to be easy aging, and service life is shorter.And processing and forming complex steps, the waste of more raw material is caused, therefore It is simple that urgent need develops a kind of structure, and treatment effeciency is high, the strong environment-friendly type filler of durability.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of filler for fluid bed biological film method, has simple Structure construction, can be reduced production cost, and filler environmental protection is degradable, biofilm amount is big, handles the high-efficient of sewage.
A kind of filler for fluid bed biological film method, which is characterized in that the filler includes that outer layer mesh bag and internal layer are filled out Fill microballoon；Internal layer filling microballoon includes 5-10 parts of carbonization rice husk powder in parts by mass, and 5-10 parts of diatomite, di 5-10 parts of calcium, 40-60 parts of PVC elastomer, 20-40 parts of polyvinyl alcohol resin, 2-6 parts of stearic acid, 1-5 parts of polyacrylamide, hair 10-20 parts of infusion；The outer layer mesh bag is thermoplastic resin, is bonded in internal layer by heat treatment and fills on microsphere surface.
Further, the diameter of the internal layer filling microballoon is 1-2cm, and the mesh diameter of the outer layer mesh bag is 0.3- 0.6cm。
Further, the foaming agent in the internal layer filling microballoon is isopropyl chloride.
Further, the carbonization rice husk powder, diatomite, the powder diameter of calcium hydroxy phosphate are 200 mesh or less.
Further, the specific surface area of the internal layer filling microballoon is greater than 600m2/g。
Further, the thermoplastic resin of the outer layer mesh bag is polyethylene, in polypropylene, polyvinyl chloride, polystyrene It is at least one.
Further, the treatment temperature of the heat treatment bonding is 120-150 DEG C.
Further, each filler includes that 20-100 internal layer fills microballoon.
A kind of preparation method of the above-mentioned filler for fluid bed biological film method, which comprises the following steps: (1) carbonization rice husk powder, diatomite, calcium hydroxy phosphate, PVC elastomer, polyvinyl alcohol resin, stearic acid, polyacrylamide, hair Infusion is uniformly mixed, and said mixture material is added to melt foaming in foam forming machine by high-speed stirred；(2) it is then injected into Die for molding fills microballoon at internal layer；(3) a certain number of internal layers filling microballoon is added in outer layer mesh bag, is fixed to not It can arbitrarily slide, carry out heat treatment 5-20 seconds；(4) ultraviolet light irradiation filler is finally used.
Further, the wavelength of ultraviolet light is 254nm, irradiates filler 5-10min.
Advantageous effect of the invention:
Biologic packing material of the invention also adds a certain amount of calcium hydroxy phosphate, utilizes hydroxyl other than conventional polymer Calcium phosphate, carbonized rice husks etc. are to the compatibility of activated bacterial, to further increase treatment effeciency；Above-mentioned polyvinyl alcohol and PVC Elastomer plays good wetability in filler, while adding stearic acid and polyacrylamide, the wetting of obtained filler Performance significantly improves so that biomembrane contacted with filler it is closer.
Gained filler of the invention is ectonexine structure, and central symmetry and rotational symmetry with group, isotropism degree is high, There is suitable gap between internal microballoon, is conducive to the permeability for improving biologic packing material, i.e., between raising biomembrane and water body Mass exchange ability；Passing through outer layer mesh bag and heat treatment simultaneously, so that melting between microballoon, between microballoon and mesh bag in contact position Melt is closed, and the mutual mechanical collision between biologic packing material is avoided, and is conducive to the service life cycle for improving substrate.So that biomembrane It is contacted with filler closer.Construction of the invention so that cause the local high oxidation of inner space, and extend microorganism with it is organic The time of contact of object, so that organic matter is by rapid, thorough degradation.
Filler of the invention, by the way that carbonization rice husk powder is added, diatomite, the biologic inorganics matter such as calcium hydroxy phosphate is porous to be filled out Agent is filled, has the effect of that collaboration improves biofilm amount and biofilm speed, by the way that foaming agent is added, makes internal layer filler microballoon that there is connection Large aperture, promote microorganism enter and grow on the surface thereof, by addition control internal layer filler microballoon diameter so that ring Protecting filler integrally has suitable voidage and a circulation, guarantees that water flow can be rapidly performed by exchange, by outer layer mesh bag with Heat treatment, secures between microballoon, sliding over each other between microballoon and mesh bag avoids the biofilm in fierce water flow from falling off.
Specific embodiment
To facilitate a better understanding of the present invention, it is illustrated by the following examples, these examples belong to protection of the invention Range, but do not limit the scope of the invention.
Embodiment 1
The preparation method of filler for fluid bed biological film method, which comprises the following steps: (1) will carbonization Rice husk powder, diatomite, it is 200 mesh hereinafter, by 7.5 parts of carbonization rice husk powder that calcium hydroxy phosphate, which is crushed to partial size, diatomite 7.5 Part, it is 7.5 parts of calcium hydroxy phosphate, 50 parts of PVC elastomer, 30 parts of polyvinyl alcohol resin, 4 parts of stearic acid, 3 parts of polyacrylamide, different 15 parts of propyl chloride are uniformly mixed, and said mixture material is added to melt foaming in foam forming machine by high-speed stirred；(2) then It is injected into die for molding and fills microballoon at the internal layer that diameter is 1.5cm；(3) 60 internal layer filling microballoons are added to mesh Diameter is in the outer layer mesh bag of 0.5cm, and it is polypropylene that the material of the outer layer mesh bag, which is thermoplastic resin, and being fixed to cannot be random Sliding carries out heat treatment 10 seconds of 130 DEG C；(4) ultraviolet light irradiation filler is finally used, the wavelength of ultraviolet light is 254nm, irradiation Filler 7.5min.
Embodiment 2
The preparation method of filler for fluid bed biological film method, which comprises the following steps: (1) will carbonization Rice husk powder, diatomite, it is 200 mesh hereinafter, by 10 parts of carbonization rice husk powder that calcium hydroxy phosphate, which is crushed to partial size, 5 parts of diatomite, 10 parts of calcium hydroxy phosphate, 40 parts of PVC elastomer, 40 parts of polyvinyl alcohol resin, 2 parts of stearic acid, 5 parts of polyacrylamide, isopropyl 10 parts of chlorine are uniformly mixed, and said mixture material is added to melt foaming in foam forming machine by high-speed stirred；(2) it is then injected into Microballoon is filled at the internal layer that diameter is 2cm to die for molding；(3) 20 internal layer filling microballoons are added to mesh diameter is In the outer layer mesh bag of 0.6cm, it is polypropylene that the material of the outer layer mesh bag, which is thermoplastic resin, and being fixed to arbitrarily to slide, Carry out heat treatment 20 seconds of 120 DEG C；(4) ultraviolet light irradiation filler is finally used, the wavelength of ultraviolet light is 254nm, irradiates filler 5min。
Embodiment 3
The preparation method of filler for fluid bed biological film method, which comprises the following steps: (1) will carbonization Rice husk powder, diatomite, it is 200 mesh hereinafter, by 5 parts of carbonization rice husk powder that calcium hydroxy phosphate, which is crushed to partial size, 10 parts of diatomite, 5 parts of calcium hydroxy phosphate, 60 parts of PVC elastomer, 20 parts of polyvinyl alcohol resin, 6 parts of stearic acid, 1 part of polyacrylamide, isopropyl chloride 20 parts are uniformly mixed, and said mixture material is added to melt foaming in foam forming machine by high-speed stirred；(2) it is then injected into Die for molding fills microballoon at the internal layer that diameter is 1cm；(3) 100 internal layer filling microballoons are added to mesh diameter is In the outer layer mesh bag of 0.3cm, it is polypropylene that the material of the outer layer mesh bag, which is thermoplastic resin, and being fixed to arbitrarily to slide, Carry out heat treatment 5 seconds of 150 DEG C；(4) ultraviolet light irradiation filler is finally used, the wavelength of ultraviolet light is 254nm, irradiates filler 10min。
Comparative example 1
It is same as Example 1, it foams in addition to being added without foaming agent.
Comparative example 2
It is same as Example 1, in addition to being added without carbonization rice husk powder.
Comparative example 3
It is same as Example 1, in addition to being added without diatomite.
Comparative example 4
It is same as Example 1, in addition to being added without calcium hydroxy phosphate.
Comparative example 5
It is same as Example 1, in addition to polyvinyl alcohol resin is not added.
Comparative example 6
It is same as Example 1, in addition to the diameter of internal layer filling microballoon is 5cm.
Comparative example 7
It is same as Example 1, in addition to being not provided with outer layer mesh bag.
Comparative example 8
It is same as Example 1, in addition to without heat treatment.
Same amount of biologic packing material is taken to be seated on thermopnore respectively, COD is 1200mg/L in influent density, bored to expose 1 It, aeration quantity 1m3Bored exposure measures the biofilm biomass of different fillers under conditions of/h after 1 day, 1 day.Gained biofilm filler is existed Hydrophilic middle aeration quantity is 1m3/ h, aeration tested remaining biofilm biomass, as a result such as following table after 1 day.
As seen from the above table, filler of the invention, by the way that carbonization rice husk powder, diatomite, the biologies such as calcium hydroxy phosphate are added Inanimate matter porous fillers have the effect of that collaboration improves biofilm amount and biofilm speed, by the way that foaming agent is added, make internal layer filler Microballoon has the large aperture of connection, promotes microorganism to enter and grows on the surface thereof, controls internal layer filler microballoon by being added Diameter guarantee that water flow can be rapidly performed by exchange so that environment-friendly filler integrally has suitable voidage and a circulation, it is logical Outer layer mesh bag and heat treatment are crossed, is secured between microballoon, sliding over each other between microballoon and mesh bag avoids in fierce water flow Biofilm falls off.

Claims (10)

1. a kind of filler for fluid bed biological film method, which is characterized in that the filler includes that outer layer mesh bag and internal layer are filled Microballoon；Internal layer filling microballoon includes 5-10 parts of carbonization rice husk powder in parts by mass, and 5-10 parts of diatomite, calcium hydroxy phosphate 5-10 parts, 40-60 parts of PVC elastomer, 20-40 parts of polyvinyl alcohol resin, 2-6 parts of stearic acid, 1-5 parts of polyacrylamide, foaming 10-20 parts of agent；The outer layer mesh bag is thermoplastic resin, is bonded in internal layer by heat treatment and fills on microsphere surface.
2. the filler according to claim 1 for fluid bed biological film method, which is characterized in that the internal layer fills microballoon Diameter be 1-2cm, the mesh diameter of the outer layer mesh bag is 0.3-0.6cm.
3. the filler according to claim 1 for fluid bed biological film method, which is characterized in that the internal layer fills microballoon In foaming agent be isopropyl chloride.
4. the filler according to claim 1 for fluid bed biological film method, which is characterized in that the carbonization rice husk powder End, diatomite, the powder diameter of calcium hydroxy phosphate are 200 mesh or less.
5. the filler according to claim 1 for fluid bed biological film method, which is characterized in that the internal layer fills microballoon Specific surface area be greater than 600m2/g.
6. the filler according to claim 1 for fluid bed biological film method, which is characterized in that the heat of the outer layer mesh bag Plastic resin is at least one of polyethylene, polypropylene, polyvinyl chloride, polystyrene.
7. the filler according to claim 1 for fluid bed biological film method, which is characterized in that the heat treatment bonding Treatment temperature is 120-150 DEG C.
8. the filler according to claim 1 for fluid bed biological film method, which is characterized in that each filler includes 20-100 internal layer fills microballoon.
9. a kind of preparation method of the filler according to claim 1-8 for fluid bed biological film method, special Sign is, comprising the following steps: (1) carbonization rice husk powder, diatomite, and calcium hydroxy phosphate, PVC elastomer, polyvinyl alcohol resin, Stearic acid, polyacrylamide, foaming agent are uniformly mixed, and said mixture material is added in foam forming machine and melts by high-speed stirred Melt foaming；(2) it is then injected into die for molding and fills microballoon at internal layer；(3) a certain number of internal layers filling microballoon is added Into outer layer mesh bag, being fixed to arbitrarily to be slided, and carry out heat treatment 5-20 seconds；(4) ultraviolet light irradiation filler is finally used.
10. the preparation method of the filler according to claim 9 for fluid bed biological film method, which is characterized in that ultraviolet The wavelength of light is 254nm, irradiates filler 5-10min.
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