CN101538083B - High-efficiency and novel biological carrier for sewage biological treatment and preparation method thereof - Google Patents
High-efficiency and novel biological carrier for sewage biological treatment and preparation method thereof Download PDFInfo
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- CN101538083B CN101538083B CN2009101360535A CN200910136053A CN101538083B CN 101538083 B CN101538083 B CN 101538083B CN 2009101360535 A CN2009101360535 A CN 2009101360535A CN 200910136053 A CN200910136053 A CN 200910136053A CN 101538083 B CN101538083 B CN 101538083B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/007—Methods for continuous mixing
Abstract
The invention relates to a high-efficiency and novel biological carrier for a sewage biological treatment and a preparation method thereof. The biological carrier is prepared by comprising the following steps of: blending, extruding or injection-molding the following components: PP, PE, and ethylene-propylene copolymer, compatilizer, inorganic materials, plant materials, magnetic particles, and waste rubber according to a certain proportion, thus providing a biological carrier with large specific surface area, high hydrophilicity and easy hanged membrane on surfaces. The shapes of the biological carriers can be spherical, fibrous and polyhedral or powdery with various forms. The chemical or physical methods such as grinding, acid base reaction, coating on surface and the like can also be carried out to prepare the biological carrier, thus further improving the specific surface area, strengthening the adhesive ability of the biological membrane on the carrier, and improving the microorganism concentration. The preparation method of the biological carrier provided by the invention is simple, has wide adjusting range of the carrier density, easy obtaining materials, low cost, high efficiency of eliminating COD and variety shapes, can be lighter or heavier than water, and is applicable to all biological wastewater treatments.
Description
Technical field
The invention belongs to sewage treatment area, particularly relate to a kind of high-efficiency and novel biological carrier for sewage biological treatment and preparation method thereof.
Background technology
Sewage (comprising waste water) biological treatment comprises activated sludge process and biomembrance process etc.At present, biological sewage treatment has its critical role: 1. have the organism more than 60% to have only with the biological process removal just most economical in the municipal effluent approximately; 2. the in general only reliable biological process of the removal of nitrogen in the sewage; 3. it is biological treatment that the present municipal sewage plant that has built up in the world has more than 90%; 4. most of industrial sewages or waste water treatment plant are also based on biological process.
The core that the saprobia embrane method is handled is biomembranous carrier, microorganic adhesion is in the bio-carrier surface, the pollutent that utilizes himself metabolism to absorb in the water is purified waste water, so the performance of bio-carrier directly influences the metabolic whole process of microorganism, therefore also directly affect sewage treatment effect.At present, the bio-carrier that adopts both at home and abroad mainly contains: pottery, gac, hard coal, fine quartz sand, yellow sand, flue dust, slag, baton round etc.Their ubiquity pump around circuit energy consumptions are big, specific surface area is little, carrier demoulding difficulty, complicated process of preparation, shortcomings such as raw materials cost and use cost height.
Be applied to the magnetic bio-carrier of activated sludge process sewage disposal, make an addition to and help to improve biological concentration in the aeration tank, improve sewage treating efficiency, be at present advanced bio-carrier, but have also that the carrier specific surface area is limited, carrier select materials cost height, the relatively poor shortcoming of microorganic adhesion.CN101254976A discloses magnetic bio-carrier, and its component is magnetic-particle 7～21wt%; High molecular polymer 79～93wt%, described macromolecule resin is polyethylene, polypropylene, polystyrene, rubber powder, its preparation method needs through grinding, sieving, preparation process more complicated, its bio-carrier are the particle of particle diameter 0.043～0.315mm, and the bio-carrier shape is single, limit its scope of application, also limited the specific surface area size of bio-carrier; Cost is higher; Its product density is 1.0～1.4g/cm
3, it is little to adjust leeway, and use range is limited; The surface is nonpolar or the macromolecular material of low-pole, and its biological attachment power is not enough.
Summary of the invention
The objective of the invention is to overcome above-mentioned prior art and have many shortcomings, be engaged in exploitation, research and the production practice of sewage disposal for a long time through the contriver, develop a kind of high-efficiency and novel biological carrier for sewage biological treatment that improves wastewater treatment efficiency and ability, reduction processing cost greatly and preparation method thereof.
A kind of high-efficiency and novel biological carrier for sewage biological treatment provided by the invention comprises that following component and component weight percentage form through thorough mixing, moulding, processing.
Polyethylene and/or polypropylene or ethylene propylene copolymer 30～95wt%
Compatilizer 1～30wt%
Inorganic materials 4～50wt%
Vegetable material 0～30wt%
Magnetic-particle 0～30wt%
Waste rubber 0～30wt%
Described compatilizer is a graft copolymer, for example separately or the polypropylene of polycomponent graft copolymerization and/or the graft copolymer of polyethylene or ethylene propylene copolymer by monomers such as maleic anhydride, vinylformic acid, acrylate, vinyl acetate, vinylbenzene, methacrylic acid or methacrylic esters, percentage of grafting is 0.5～30%, and preferred percentage of grafting is 10～25%.
Described inorganic materials comprises for example silicon-dioxide, lime carbonate, talcum powder, flyash, attapulgite, potter's clay, diatomite, gac, kaolin, Al
2O
3, inorganic materials such as light calcium carbonate or polynite, its particle dia 1 * 10
-6To 1 * 10
-9M (suitable 100 μ m to 10 μ m), these inorganic materials can be used separately or with the use that is mixed of any ratio.
Described vegetable material, be often referred to undressed or finished fruit and fiber, for example xylon, rice husk, Pericarppium arachidis hypogaeae, rice straw, wheat straw stalk, maize straw, cotton fibre, bamboo fibers or flaxen fiber etc., these vegetable materials can use separately or with the use that is mixed of any ratio, its diameter 1 μ m-5mm is preferably 10 μ m-500 μ m.
Described magnetic-particle is one or more the mixture that contains ferromagnetic material, and blending ratio can any ratio, for example Z 250, metal iron powder or magnetite powder etc., its particle dia 1 * 10
-6To 1 * 10
-9M, more preferably 1 * 10
-7To 1 * 10
-9M (Subnano-class and nano level).
Described waste rubber comprises the waste rubber that for example various automobile tires of various rubber items, industrial rubber articles and life rubber item reclaim, be preferably the meticulous powder of waste rubber (100-500 order), can reduce cost greatly, improve the biological sewage treatment environment, help biological sewage treatment.
The invention provides a kind of preparation method of high-efficiency and novel biological carrier for sewage biological treatment, comprise the following steps:
1. with inorganic materials, vegetable material, magnetic-particle and waste rubber, respectively at 60～150 ℃, preferred 100～120 ℃ are carried out drying, and separated pulverizing becomes particle dia 1mm～10 μ m;
2. dry inorganic materials, vegetable material, waste rubber or the magnetic-particle that 1. step is obtained separately or arbitrary combination and polyethylene and/or polypropylene or ethylene propylene copolymer and compatilizer in each component weight percentage (the each component sum is the 100wt% ratio) ratio thorough mixing after, through extrude, moulding forms various different shapeies for example sphere, appearance polyhedron, fiber or netted etc. bio-carrier directly used;
Or the bio-carrier that 3. more 2. step is obtained to be crushed to particle dia through wave pulverizer or fine pulverizer (commercially available prod) be 1 * 10
-6To 1 * 10
-10M, the bio-carrier of (being nano-micro level) biological sewage treatment;
4. with step 2. or the bio-carrier that 3. obtains respectively for example handle the inorganic components dissolving that makes bio-carrier through acid-respons or alkali reaction through chemistry or physical method, obtain the bio-carrier of nanometer, or obtain the new bio carrier through processing such as tensio-active agent, water-soluble epoxy resin or coupling agent coatings to micrometer level porous shape.
In high-efficiency and novel biological carrier for sewage biological treatment provided by the invention and preparation method thereof, described sewage comprises various sewage for example industrial sewage such as petrochemical complex or chemical engineering sewage, oil refining sewerage, papermaking wastewater, dyeing and printing sewage, coking sewage, mine sewage, steel iron wastewater etc., and city domestic sewage etc.
Polyethylene and polypropylene that polyethylene of the present invention and/or polypropylene or ethylene copolymer are meant polyethylene, polypropylene, are mixed with any ratio, the binary of ethene and propylene or contain a small amount of the 3rd monomeric terpolymer, and their recovery plastic waste.Described compatilizer is polyethylene and/or polyacrylic graft copolymer, have identical polymer chain and chain link with polyethylene and/or polypropylene or ethylene copolymer component in these graft copolymers, so consistency is fabulous, introduce simultaneously strong polar reaction group again, there is hydroxyl on the surface, ester group, wetting ability polar groups such as carboxyl, make the bio-carrier surface have high polarity, with other inorganic materials, vegetable material and magnetic-particle have fabulous consistency equally, each component adopts nano-micro level granularity material to make very homogeneous of bio-carrier external and internal compositions, improve the sticking power and the survival and reproduction environment of biological bacteria greatly, for biological bacteria is destroyed decomposition rapidly, the special nitrogenous substances of organism is created extremely beneficial condition in the absorption sewage.Reach molecular level or approximate molecular level level, similar in appearance to the biological bacteria level, add inorganic materials, make carrier surface that the particularly inorganic materials of nanometer or micron of a lot of inorganic materials be arranged, both reduced cost, more improved the sticking power of biological bacteria, can also pass through acid-respons, alkali reaction, make the inorganic components dissolving of bio-carrier, form nano level to the micron order hole to improve the particularly living space of anerobe and digestion bacterium of biological bacteria, improve sticking power simultaneously; Add vegetable material, at first reduce cost, secondly the part vegetable material in use rots naturally, forms hole, the biologic chain that prolongs the waste water microbial environment once more, help to cultivate all kinds of needed biological bacteria by user's intention, by the integrated combination of above many-sided technology, can improve the specific surface area of bio-carrier greatly, the sticking power of biological bacteria, improve biomembranous thickness, reduce surplus sludge volume.Bio-carrier adjustable density of the present invention has lighter and weigh two big classes, 0.92～0.99g/cm than water than water
3With 1.1～1.5g/cm
3Between two kinds of density regions, be applicable to different biological wastewater treatment ways; Simultaneously the bio-carrier surface is consistent with the intrinsic material property, surface ag(e)ing or come off after can form new surface again, have the performance consistent equally with novel vector.Bio-carrier shape provided by the invention can be spherical, fibrous, various moulding polyhedron or powder, and adaptability is wider.Magneticsubstance of the present invention reaches micron order to the bio-carrier form of nanoscale powder and overcomes the prior art deficiency, better effects if, cost is lower, the surface is more suitable for biological bacteria and adheres to, density can be lighter than water, also can be heavier than water, applicable to all biological sewage treatment ways, and be better than the other biological carrier.
The new high-efficiency bio-carrier of biological sewage treatment provided by the invention, be described its related component through blend, extrude or a kind of bio-carrier of injection moulding processing and preparing, can directly use or use through reprocessing, thereby provide a kind of bigger serface that has, high-hydrophilic, surface have similar natural inorganic material and natural macromolecular material characteristic, easy to be filmed, and the density bio-carrier (0.9～1.50g/cm that can control
3Can adjust arbitrarily).Its shape can be spherical, fibrous, various moulding polyhedron or powder (fine powder), and the bio-carrier after the moulding has physical strength preferably, and is not yielding and broken, and easily reclaims.The new bio carrier that wherein adds magnetic-particle can be made Powdered, reclaims with magnetic separation technique after use.
Bio-carrier provided by the invention in manufacturing processed, especially blend, extrude or injection moulding in can add right amount of processing aids such as antioxidant 1010 etc. according to the requirement of complete processing range of product, it is a present technique field known technology and adjuvant used.
Its component blend provided by the invention, extrude or injection moulding forms density 0.90～1.50g/cm
3Between can adjust preferred 0.92～0.99g/cm arbitrarily
3With 1.1～1.5g/cm
3Bio-carrier particle or fiber or moulding polyhedron between two kinds of density regions; through aftertreatment or directly be added to anaerobic reactor, oxygen compatibility pool or aeration tank particularly in the MBBR pond; with add common bio-carrier and compare; increased the biological concentration in the pond; improved the COD clearance, wherein said bio-carrier particle also can be processed as again through being ground into 1 * 10
-6～1 * 10
-9The molecule carrier of m; Wherein said aftertreatment reprocessing is meant chemistry or physical treatment methods such as the acid-respons that adopts prior art, alkali reaction, surfactant-coated, aqueous epoxy resins coating, coupling agent coating, make the new bio carrier of described biological sewage treatment more can effectively increase specific surface area, strengthen the adhesive ability of microbial film on bio-carrier, improve microorganism concn, improve the COD clearance.
The new high-efficiency of biological sewage treatment provided by the invention is produced the advantage of carrier and preparation method thereof:
1) the invention provides bio-carrier, add the compatilizer graft copolymer, introducing and PE and/or PP or ethylene propylene copolymer have same polymeric chain and chain link and strong polar reaction group, there are wetting ability polar groups such as hydroxyl, ester group, carboxyl on the surface, make the bio-carrier surface have high polarity, consistency is fabulous between the each component simultaneously, improves the sticking power of biological bacteria greatly; Add inorganic materials and waste rubber, make carrier surface have a lot of inorganic materials particularly nanometer or the micron inorganic materials, living environment like the creation biophase, reduced cost again, more improved the sticking power of biological bacteria, can also pass through acid-respons, alkali reaction, made the inorganic components dissolving of bio-carrier, form nano level to the micron order hole to improve the particularly living space of anerobe and digestion bacterium of biological bacteria, improve sticking power simultaneously; Add vegetable material, at first reduce cost, secondly the part vegetable material in use rots naturally, forms hole, prolong the biologic chain of sewage microbial environment once more, help to cultivate all kinds of needed biological bacteria,, can improve the specific surface area of bio-carrier greatly by the integrated combination of above many-sided technology by user's intention, the sticking power of biological bacteria, improve biomembranous thickness, thereby effectively improve the ability and the effect of treatment unit, reduce surplus sludge volume.Bio-carrier adjustable density of the present invention has lighter and weigh two big classes, 0.92～0.99g/cm than water than water
3With 1.1～1.5g/cm
3Between two kinds of density regions, be applicable to different biological wastewater treatment ways; Simultaneously the bio-carrier surface is consistent with the intrinsic material property, surface ag(e)ing or come off after can form new surface again, have the performance consistent equally with novel vector; Bio-carrier shape of the present invention can be spherical, fibrous, various moulding polyhedron or powder, and adaptability is wider, and cost is lower.
2) bio-carrier provided by the invention is applicable to all biological sewage treatment ways, and biological attachment is good, treatment effect is good, hydraulic detention time shortens, and can improve the processing power and the treatment effect of existing biological sewage treatment subtraction unit greatly.
3) bio-carrier provided by the invention has very big specific surface area, and when being used for biological sewage treatment, the activated sludge concentration height that carrier adheres to makes this law have very high volumetric loading, thereby can reduce construction investment greatly.
4) bio-carrier provided by the invention is used for biological sewage treatment, long service life, the cost of reduction sewage disposal.
5) bio-carrier provided by the invention can adopt waste high polymer (as waste rubber, useless PP and PE), vegetable fibre and inorganic materials, when making waste product and biomass resource obtain utilizing, also reduce the production cost of this carrier, and then reduced the construction and the running cost of sewage disposal.
6) bio-carrier preparation method provided by the invention is simple, and required reagent and material are easy to get.
7) bio-carrier preparation method provided by the invention adopts melt blending extrusion moulding preparation, and advantage is that equipment is simple, and controllability is strong, and is with short production cycle, is easy to realize suitability for industrialized production.
8) bio-carrier preparation method provided by the invention handles through chemistry and physical method, can further improve carrier specific surface area and surface property.
9) bio-carrier of Hui Shouing is with hydroxyl radical free radical oxygen or medicament sterilization rear demouldings such as ozone or dioxide peroxide or clorox, again through being directly used in other biological sewage treatment after the washing.
10) bio-carrier of the present invention is easy to reclaim, and the powder bio-carrier that adds magneticsubstance can reclaim with magnetism separate method; Do not add the light powder bio-carrier of ratio water of magneticsubstance, can leave standstill or use mechanical separation to reclaim naturally; The bio-carrier of non-powder directly reclaims.
Embodiment
The present invention further specifies the present invention with the following example, but protection scope of the present invention is not limited to the following example.
Embodiment 1
Polypropylene (resin) (2500g), the common graft polypropylene resin (500g) of 10% maleic anhydride vinyl acetate (wherein the ratio of maleic anhydride and vinyl acetate is 1: 1), nano level silicon-dioxide (1500g), flaxen fiber (500g), the meticulous powder of waste rubber (500g), micro-antioxidant 1010 through the homogenizer thorough mixing after, be added in the injection moulding machine, in the machine barrel of injection moulding machine, make acrylic resin, the common graft polypropylene resin of maleic anhydride vinyl acetate, SiO through fusion
2With flaxen fiber and waste Crumb rubber thorough mixing, to extrude the back quadric injection mould or directly be injection molded into 3 D elastic filler, combined stuffing, folding ripple filler, hexagon cellular filler or soft-filler, density is about 1.03g/cm
3Bio-carrier S-01.Can be used for bio-contact oxidation.
Embodiment 2
The common graft polypropylene resin (500g) of acrylic resin (3750g), 15% maleic anhydride vinylformic acid (ratio of maleic anhydride and acrylate 10: 5), nano level silicon-dioxide (500g), micro-antioxidant 1010 and Fe
3O
4Behind magnetic-particle (250g) the process high speed agitator thorough mixing, be added in the plastics extruder, in the machine barrel of plastics extruder, make acrylic resin, maleic anhydride acrylic acid-grafted polypropylene resin and silicon-dioxide, Fe through fusion
3O
4The magnetic-particle thorough mixing is extruded, is cut off, and forms the particulate that contains magnetic-particle.Then this particulate is obtained particle diameter with the plastic grinder grinding and be about 10
-6～10
-7Micron-sized magnetic carrier, density is about 0.98g/cm
3, obtain magnetic bio-carrier S-02.
Embodiment 3
Behind polyvinyl resin (3000g), 25% maleic anhydride vinyl acetate grafted polyethylene propylene copolymer resins (500g), nano level lime carbonate (1000g), rice husk powder (500g), the process high speed agitator thorough mixing, be added in the injection moulding machine, in the machine barrel of injection moulding machine, make polyvinyl resin, maleic anhydride vinyl acetate grafted polyethylene acrylic resin, SiO through fusion
2With rice husk powder thorough mixing, injection moulding, the wavy filler of triangulation, or hollow ball, fibrous or netted shape obtain density and are about 1.02g/cm
3Bio-carrier S-03.
Embodiment 4
Acrylic resin (2500g), 10% maleic anhydride methyl methacrylate (1: 1) graft polypropylene resin (500g), nano level potter's clay (1000g), rice husk powder (500g), the meticulous powder of waste rubber (500g), micro-antioxidant 1010 and Fe
3O
4Behind magnetic-particle (500g) the process high speed agitator thorough mixing, be added in the plastics extruder, in the machine barrel of plastics extruder, make acrylic resin, maleic anhydride methyl methacrylate-grafted acrylic resin and silicon-dioxide, Fe through fusion
3O
4The meticulous powder thorough mixing of magnetic-particle and waste rubber is extruded, is cut off, and forms the high molecular polymer particulate that contains magnetic-particle.Then the high molecular polymer particulate is ground with plastic grinder and obtain the magnetic carrier that particle diameter is about 0.06～0.15mm, density is about 1.05g/cm
3, obtain magnetic bio-carrier S-04.
Embodiment 5
Reclaim acrylic resin (2500g), 15% maleic anhydride vinyl acetate graft polypropylene resin (500g), nano level lime carbonate (1000g), bamboo fibers (500g), the meticulous powder of waste rubber (500g), micro-antioxidant 1010 and Fe
3O
4Behind magnetic-particle (500g) the process high speed agitator thorough mixing, be added in the plastics extruder, in the machine barrel of plastics extruder, make acrylic resin, maleic anhydride vinyl acetate graft polypropylene resin and silicon-dioxide, Fe through fusion
3O
4The magnetic-particle thorough mixing is extruded, is cut off, and forms the high molecular polymer particulate that contains magnetic-particle.Then the high molecular polymer particulate is ground with plastic grinder and obtain the magnetic bio-carrier that particle diameter is about 0.06～0.15mm, density is about 1.07g/cm
3, obtain magnetic bio-carrier S-05.
Embodiment 6
Reclaim polyethylene acrylic resin (1: 1) (3500g), the common grafted polyethylene propylene copolymer resins (500g) of 10% maleic anhydride vinyl acetate (1: 1), nano level silicon-dioxide (250g), rice husk powder (500g), micro-antioxidant 1010 and Fe
3O
4Behind magnetic-particle (250g) the process high speed agitator thorough mixing, be added in the plastics extruder, in the machine barrel of plastics extruder, make acrylic resin, maleic anhydride vinyl acetate graft polypropylene resin and silicon-dioxide, Fe through fusion
3O
4The magnetic-particle thorough mixing is extruded, is cut off, and forms the high molecular polymer particulate that contains magnetic-particle.Then the high molecular polymer particulate is ground with plastic grinder and obtain the magnetic bio-carrier that particle diameter is about 0.06～0.15mm, density is about 0.97g/cm
3, obtain magnetic bio-carrier S-06.
Embodiment 7
Waste and old polypropylene resin (2500g), the meticulous powder of waste rubber (500g), 15% maleic anhydride vinegar, vinyl acetate and vinylformic acid (1: 1: 1) graft polypropylene resin (500g), flyash fine powder (1000g), rice husk powder (500g), micro-antioxidant 1010 and Fe
3O
4Behind magnetic-particle (500g) the process high speed agitator thorough mixing, be added in the plastics extruder, in the machine barrel of plastics extruder, make acrylic resin, maleic anhydride vinyl acetate, third light the common graft polypropylene resin of acid and silicon-dioxide, Fe through fusion
3O
4The magnetic-particle thorough mixing is extruded, is cut off, and forms the high molecular polymer particulate that contains magnetic-particle.Then the high molecular polymer particulate is ground with plastic grinder and obtain the magnetic bio-carrier that particle diameter is about 0.06～0.15mm, density is about 1.06g/cm
3, obtain magnetic bio-carrier S-07.
Embodiment 8
Waste and old polypropylene resin (2500g), 10% maleic anhydride vinyl acetate grafted polyethylene propylene copolymer resins (500g), nanometer grade calcium carbonate (1000g), rice husk powder (500g), micro-antioxidant 1010 and Fe
3O
4Behind magnetic-particle (500g) the process high speed agitator thorough mixing, be added in the plastics extruder, in the machine barrel of plastics extruder, make acrylic resin, maleic anhydride vinyl acetate graft polypropylene resin and silicon-dioxide, Fe through fusion
3O
4The magnetic-particle thorough mixing is extruded, is cut off, and forms the high molecular polymer particulate that contains magnetic-particle.Then the high molecular polymer particulate is ground with plastic grinder and obtain the magnetic bio-carrier that particle diameter is about 0.06～0.15mm, density is about 1.08g/cm
3, obtain magnetic bio-carrier S-08.
Embodiment 9
Waste and old polypropylene resin (2500g), 10% maleic anhydride methyl methacrylate-grafted acrylic resin (500g), nano level light calcium carbonate (1000g), bamboo fibers (500g), micro-antioxidant 1010 and Fe
3O
4Behind magnetic-particle (500g) the process high speed agitator thorough mixing, be added in the plastics extruder, in the machine barrel of plastics extruder, make acrylic resin, maleic anhydride methyl methacrylate-grafted acrylic resin and silicon-dioxide, Fe through fusion
3O
4The magnetic-particle thorough mixing is extruded, is cut off, and forms the high molecular polymer particulate that contains magnetic-particle.Then the high molecular polymer particulate is ground with plastic grinder and obtain the magnetic bio-carrier that particle diameter is about 0.06～0.15mm, density is about 1.09g/cm
3, obtain magnetic bio-carrier S-09.
Embodiment 10
Present embodiment is same as embodiment 2, is not both the magnetic bio-carrier S-02 of example 2 was boiled 2 hours with 10% aqueous sodium hydroxide solution, washes neutrality then, obtains the magnetic bio-carrier S-10 that there is micro-pits on the surface.
Embodiment 11
Present embodiment is same as embodiment 8, is not both the magnetic bio-carrier S-08 of example 8 was soaked 2-3 hour with 5% aqueous hydrochloric acid, washes neutrality then, obtains the magnetic bio-carrier S-11 that there is micro-pits on the surface.
Embodiment 12
Bio-contact oxidation experimental installation in, the combined stuffing that adopts S-01 and S-03 bio-carrier material to make, at hydraulic detention time is 6h, under 8: 1 the condition of gas-water ratio, when water inlet COD mean value be 490mg/L, when ammonia nitrogen concentration mean value is 36mg/L, S-01 water outlet COD and ammonia nitrogen removal frank are respectively 97% and 85%, and S-03 water outlet COD and ammonia nitrogen removal frank are respectively 95% and 80%.
Embodiment 13
In the experimental installation of MBBR, add different types of magnetic bio-carrier, addition is 15% of an aeration tank useful volume, at hydraulic detention time is 3h, under 10: 1 the condition of gas-water ratio, when water inlet COD mean value is 520mg/L, when ammonia nitrogen concentration mean value is 41mg/L, detects MBBR reactor water outlet COD and ammonia nitrogen removal frank and list in table 1.
The COD of the different magnetic carriers of table 1 removes rate
| Bearer type | S-02 | S-04 | S-05 | S-06 | S-07 | S-08 | S-09 | S-10 | S-11 |
| Water outlet COD, mg/L | 26 | 32 | 22 | 12 | 39 | 32 | 35 | 33 | 28 |
| The COD clearance, % | 95 | 94 | 96 | 98 | 93 | 94 | 93 | 94 | 95 |
| The water outlet ammonia nitrogen, mg/L | 4 | 3 | 2 | 3 | 5 | 5 | 2 | 3 | 3 |
| Ammonia nitrogen removal frank, % | 90 | 93 | 95 | 93 | 88 | 88 | 95 | 93 | 93 |
Embodiment 14
Through magnetic separator, sewage and mud flow out from magnetic plant with the sewage that contains carrier and active sludge in the MBBR experimental installation of the foregoing description 13, and magnetic carrier is reclaimed by magnetic plant, through can directly being used in similar sewage disposal after the washing.
Embodiment 15
Magnetic carrier with the foregoing description 13 through the magnetic plant recovery, after processing such as hydroxyl radical free radical oxygen or ozone or dioxide peroxide or clorox, magnetic carrier surface mud comes off, after magnetic plant reclaims, after washing, can treat as novel vector again, under corresponding conditions, be used for the biological sewage treatment of other kinds again after biofilm and the cultivation.
Embodiment 16
In anaerobism moving-burden bed reactor experimental installation, hold 30% by the pond and add magnetic carrier S-3, in temperature is that 15～26 ℃, hydraulic detention time are under the condition of 12h, adopt certain pharmaceutical factory's industrial organic sewage to do the reactor water inlet, its COD is between 8500～23300mg/L, reactor water outlet COD is 1820～2260mg/L, and the COD clearance is 78～90%.
Embodiment 17
Present embodiment is same as embodiment 4, is not both the bio-carrier that example 4 is obtained and handles with surfactant-coated.
Claims (9)
1. a biological sewage treatment high-performance bio carrier is characterized in that comprising that following component and component weight percentage form through thorough mixing, moulding, processing
Polyethylene and/or polypropylene or ethylene propylene copolymer 30～95wt%
Compatilizer 1～30wt%
Inorganic materials 4～50wt%
Vegetable material 0～30wt%
Magnetic-particle 0～30wt%
Waste rubber 0～30wt%.
2. according to the described biological sewage treatment high-performance bio of claim 1 carrier, it is characterized in that: described compatilizer is maleic anhydride, vinylformic acid, acrylate, vinyl acetate, vinylbenzene, methacrylic acid or methacrylate monomer independent or the polypropylene of polycomponent graft copolymerization and/or the graft copolymer of polyethylene and ethylene propylene copolymer, and percentage of grafting is 0.5～30%.
3. according to the described biological sewage treatment high-performance bio of claim 1 carrier, it is characterized in that described inorganic materials is silicon-dioxide, lime carbonate, talcum powder, flyash, attapulgite, potter's clay, diatomite, gac, Al
2O
3, light calcium carbonate or polynite one or more combinations, its particle dia 100 μ m～10 μ m.
4. according to the described biological sewage treatment high-performance bio of claim 1 carrier, it is characterized in that described vegetable material is undressed or finished fruit and fiber, particle dia 10 μ m～5mm.
5. according to the described biological sewage treatment high-performance bio of claim 4 carrier, it is characterized in that described undressed or finished fruit and fiber are one or more combinations of wood powder, rice husk, Pericarppium arachidis hypogaeae, rice straw, wheat straw stalk, maize straw, cotton fibre, bamboo fibers or flaxen fiber.
6. according to the described biological sewage treatment high-performance bio of claim 1 carrier, it is characterized in that described magnetic-particle is for containing ferromagnetic material, particle dia 1 μ m～1mm.
7. according to the described biological sewage treatment high-performance bio of claim 6 carrier, it is characterized in that the described ferromagnetic material that contains is Z 250, metal iron powder or magnetite powder, or its mixture, particle dia 1 μ m～50 μ m.
8. the preparation method of the biological sewage treatment high-performance bio carrier of a claim 1 comprises the following steps:
1. inorganic materials, vegetable material, magnetic-particle and waste rubber are carried out drying at 60～150 ℃ respectively, and separated pulverizing becomes particle dia 1mm～10 μ m;
2. dry inorganic materials, vegetable material, magnetic-particle and the waste rubber that 1. step is obtained separately or arbitrary combination and polyethylene and/or polypropylene or ethylene propylene copolymer and compatilizer in each component weight percentage ratio thorough mixing after, through extrude, moulding forms sphere, appearance polyhedron, fiber or netted bio-carrier, directly use;
Or the bio-carrier that 3. 2. step is obtained to be crushed to particle dia through wave pulverizer or fine pulverizer again be 1 * 10
-6To 1 * 10
-10The bio-carrier of the biological sewage treatment of m;
4. with step 2. or the bio-carrier that 3. obtains respectively handle through chemistry or physical method again.
9. described according to Claim 8 biological sewage treatment high-performance bio preparing carriers method is characterized in that described chemistry or physical method are acid-respons, alkali reaction, surfactant-coated, aqueous epoxy resins applies or coupling agent applies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101360535A CN101538083B (en) | 2009-03-19 | 2009-04-24 | High-efficiency and novel biological carrier for sewage biological treatment and preparation method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910119049.8 | 2009-03-19 | ||
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| CN2009101360535A CN101538083B (en) | 2009-03-19 | 2009-04-24 | High-efficiency and novel biological carrier for sewage biological treatment and preparation method thereof |
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