CN1522972A - Method for preparing magnetic filling with biological affinity, hydrophilicity and activity for water treatment - Google Patents
Method for preparing magnetic filling with biological affinity, hydrophilicity and activity for water treatment Download PDFInfo
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- CN1522972A CN1522972A CNA031403867A CN03140386A CN1522972A CN 1522972 A CN1522972 A CN 1522972A CN A031403867 A CNA031403867 A CN A031403867A CN 03140386 A CN03140386 A CN 03140386A CN 1522972 A CN1522972 A CN 1522972A
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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
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Abstract
The present invention relates to a preparation method of biological affinity hydrophilic active magnetic seed filling material for treating water. It is characterized by that said method includes the following steps: mixing biological affinity substance, hydrophilic substance, magnetic powder and active carbon or magnetic powder and calcium carbonate in the high-molecular base material, and adding dispersion lubricating agent, uniformly stirring them, placing them into injection moulding machine, utilizing filling mould to make extrusion moulding and magnetizing, so as to obtain the invented filling material. It has biological affinity and hydrophilicity, at the same time can induce microbial activity and enzyme activity, and can raise oxygen utilization rate in water and water treatment efficiency.
Description
(1) technical field:
The present invention is used to carry out a biological disposal upon the preparation method of the microbe carrier (being biologic packing material) of trade effluent or sanitary sewage, and water treatment specifically is with the preparation method of biological affinity, hydrophilicity and activity magnetic filling.Biologic packing material with the inventive method preparation not only has bioaffinity and wetting ability, can also excite microorganism cells active and improve performance such as coefficient of oxygen utilization, and the microbial film aerobic biodegradation of (dirt) water that is specially adapted to give up is handled.
(2) background technology
Biologic packing material is one of core of microbial film water technology, and the biologic packing material kind has fixed (mainly containing cellular and the corrugated plate shape hard filler), suspension type (comprising soft-filler, semi soft packing, combined stuffing and elastic filler) and distributing several types such as (the heap formula of loosing and floating fillers) by mounting means classification commonly used at present.Biologic packing material is that starting material are made with macromolecular materials such as polypropylene, polyethylene, polyvinyl chloride or polyester mainly, and the special emphasis of filler exploitation is at aspects such as specific surface area, filling-material structure and the distribute water and air anti-blocking performance of filler and microbial film renewals.In actual applications, it is found that the filler made from these materials, its hydrophilicity (ability of material surface adsorption moisture) and bioaffinity (biocompatibility and biological activity) are relatively poor, cause biologic packing material moistened surface, mass-transfer performance and attached growth of microorganisms characteristic not good enough, exist not enough at the tightness and the aspects such as microorganism cells activity and coefficient of oxygen utilization of microorganism colonization toggle speed, biofilm amount, film and filler.
Though there are at present many research and development personnel to improve the filling surface wettability by biologic packing material being carried out surface treatment (as mechanical grinding roughening, acid solution immersion corrosion or ultraviolet high-energy irradiation) to contain the strong oxidizing property material, but along with constantly carrying out of water treatment, surface treated can dribble away owing to the continuous impact and the continual metabolism of microorganism of water flow, makes the processing efficiency instability; In recent years also have and in the polymer starting material, introduce the report that hydroaropic substance approach such as (as polyvinyl alcohol, polyacrylamides) improves the filler wetting ability and accelerates the microorganism colonization toggle speed, but it is not enough that the bioaffinity of filler and biological activity are still felt, thereby make the aspects such as tightness, microorganism active and coefficient of oxygen utilization between compactness, film and the filler of filling surface microbial film all await further raising.
On the other hand; in recent years, the applied research of relevant magnetic field effect in useless (dirt) aquatic organism degraded is very active, existing a large amount of research reports; biochemical reactor in saprobia degraded usefulness adds a magnetic field, can improve the biological treatment efficient of waste water greatly.But the biodegradable report of all magnetic field-intensifications all is confined to laboratory study, and this mainly is the bulky of (dirt) aquatic organism treatment facility because common reality is given up, and externally-applied magnetic field still has certain difficulty.Among the present invention a small amount of magnetic and strong magnetic particle and biological affine hydrophilic substance are attached in the biological plastics filler commonly used, the biological affinity, hydrophilicity and activity magnetic filling that the back formation of magnetizing has low-intensity magnetic field, when this filler being placed in the saprobia oxidative degradation equipment, (comprise fixed bed and fluidized-bed filler), each filler just is equal to the bio-reactor of a miniature complementary field, thereby can more easily realize mangneto physical chemistry biological effect being applicable in useless (dirt) aquatic organism of reality is handled.
(3) summary of the invention
The objective of the invention is to problem at the prior art existence, the preparation method of a kind of water treatment with the biological affinity, hydrophilicity and activity magnetic filling is provided, the filler of preparation can improve the high inadequately characteristic of its bioaffinity, biological activity, wetting ability deficiency and coefficient of oxygen utilization, have bioaffinity and wetting ability, simultaneously can induce microorganism active and enzymic activity and can improve water oxygen utilization ratio and water treatment efficiency, that the present invention is applicable to is fixed, the manufacturing of any filler in suspension type and the distributing filler.
The present invention realizes by following technical proposals: sneak into biological affine material, hydroaropic substance, magnetic and gac or magnetic and lime carbonate in polymer base material, add dispersed lubricant, after stirring, drop in the injection moulding machine, by the filling mould extrusion moulding, magnetize;
Described polymer base material can be polypropylene or polyethylene or polyvinyl chloride or polyester;
The affine material of described biology is wherein one or more mixtures of alginate calcium, starch, gelatin, bone meal, Mierocrystalline cellulose, chitosan and derivative thereof, hydroxyapatite, polyvinyl acetate (PVA);
Described hydrophilic substance is wherein one or more mixtures of polyvinyl alcohol, polyethylene glycol, polyacrylamide, agar, carrageenin, carrageenin, light-hardening resin, silica gel, diatomite;
Described magnetic mainly is wherein one or more mixtures of Z 250, ferric oxide, iron monoxide, barium ferrite, the strong magnetic particle of rare earth such as neodymium iron boron;
Described magnetic can also soak activation in glutaraldehyde, make active magnetic and be used further to prepare filler of the present invention;
Dispersed lubricant comprises the mixture of vegetable and animals oils and white mineral oil;
The parts by weight of above-mentioned raw materials consumption are as follows:
Polymer base material 50~100
Biological affine material 2~20
Hydrophilic substance 2~20
Magnetic 2~15
Gac or lime carbonate 1~5
Dispersed lubricant 1~10, wherein lubricant such as vegetable and animals oils 0.5~5, dispersion agent such as white mineral oil 0.5~5.
Optimum amount parts by weight scope:
Polymer base material 70~90
Biological affine material 3~10
Hydrophilic substance 3~10
Magnetic 4~10
Gac or lime carbonate 1~5
Dispersed lubricant 1~8, wherein lubricant such as vegetable and animals oils 0.5~4, dispersion agent such as white mineral oil 0.5~4.
The present invention preparation method more specifically is as follows: earlier with the part dispersed lubricant that magnetic and gac or lime carbonate is wetting, and in stirrer with affine material of biology and hydrophilic substance mixing, mix with polymer base material again, move into together in the stirring hopper of injection moulding machine, and the remaining dispersed lubricant of interpolation, inject filler, filler magnetizes through 5000~10000 Gausses' magnetic field, promptly can be made into the biological affinity, hydrophilicity and activity magnetic filling that has low-intensity magnetic field.
The present invention compared with prior art has the following advantages:
1. because the biological affine material of being filled mostly is microorganism cells immobilization bio-carrier commonly used, thereby prepared filler biological consistency is good, the biological activity height, the affine material of part biological on the filling surface such as minute quantity starch or bone meal etc. can be used as the part nutrition source of microorganism growth, biological nutrition source on these filling surfaces can be formed micropore by Institute of Micro-biology's degraded in the biofilm process or after the biofilm gradually simultaneously, thereby also have a function of pore-creating agent, can increase the specific surface area of filler, for microorganism provides more apposition growth point, attached growth of microorganisms is more prone to and close and firm, anti-aeration impact capacity and resistance to overload shock ability improve.
2. because the hydroaropic substance that is added and some biological affine materials contain hydrophilic radical, make filler have stronger wetting ability, thereby the wettability of filling surface and mass-transfer performance enhancing, with identical shaped volume but the filler of unlike material in water, soak, under identical soak time, biological affinity, hydrophilicity and activity magnetic filling of the present invention has bigger prudent amount than common plastics filler to water, when filler is taken out from water, can be observed biological affinity, hydrophilicity and activity magnetic filling surface with uniform moisture film, and slowly leave the then very fast formation globule drippage of common plastics filling surface.
3. place a sewage aerobic biological treatment system to test the made biological affinity, hydrophilicity and activity magnetic filling and the common plastics filler of a plurality of identical shaped specifications simultaneously, activated sludge concentration is 3~5g/L in the system, aeration rate 0.03-0.04m
3/ h.Experiment is found, less than the prepared biological affinity, hydrophilicity and activity magnetic filling of the present invention in 2 days the cotton-shaped microorganic adhesion of grey is just arranged, and the common plastics filler just had significantly biofilm sign after 7~9 days, after biofilm is stable, measure the biofilm amount of two kinds of fillers, the biofilm amount of finding the biological affinity, hydrophilicity and activity magnetic filling is higher 1~8 times than common plastics filler biofilm amount, increase aeration rate and find that also the biological affinity, hydrophilicity and activity magnetic filling is than the common plastics filler load impact of anti-the aeration, difficult drop-off, not only the biofilm startup is quick easily to show the biological affinity, hydrophilicity and activity magnetic filling, and biomembranous compactness is all relative with sticking power higher on the filler.
4. owing to have low-intensity magnetic field around the magnetic kind in the biological affinity, hydrophilicity and activity magnetic filling after magnetizing, and oxygen is the superparamagnetism material, therefore airborne oxygen can stop near the magnetic kind during aeration, prolong gas-liquid contact time, improve the utilization ratio of dissolved oxygen in water, gases such as airborne nitrogen helium then are not trapped to be assembled; Magnetic kind in the biological affinity, hydrophilicity and activity magnetic filling also can be passed through effects such as magnetic force key, magnetic force, Lorentz force and mangneto colloid effect in addition, and water pollutant etc. is gathered, adsorbs, is enriched to filling surface through magnetic; Add that the biological affinity, hydrophilicity and activity magnetic filling has the natural characteristics of impelling microorganism to grow in its surface attachment, and have been found that at present many bacterial classifications are for having a liking for magnetic sewage degradation bacteria (as photosynthetic bacterium, thiobacillus ferrooxidant etc.).Will cause like this on biological affinity, hydrophilicity and activity magnetic filling surface and form all relative higher zone of organic concentration, microbial biomass and oxyty, three's contact and diffusion probability have been increased greatly, simultaneously, raise through magnetized water osmotic pressure, help organism and oxygen through the diffusion of microbial film, strengthened the biochemical reaction in material transfer and the film to microorganism cells matter; The existence of low-intensity magnetic field also can promote Growth of Biologic Cell and metabolism, and the synthetic and enzyme of inducible enzyme is lived the quickening enzyme reaction.Experimental result in the sewage aerobic biological treatment system shows, adopt the made biological affinity, hydrophilicity and activity magnetic filling of the present invention, can significantly improve the removal efficient of CODcr than the common plastics filler of identical shaped specification, and the CODcr clearance is improved to some extent also.
5. though a large amount of laboratory studyes reports are arranged at present, add a magnetic field at the biochemical reactor of saprobia degraded usefulness, can improve the biological treatment efficient of waste water greatly.But because actual usually the bulky of (dirt) aquatic organism treatment facility of giving up, the degraded of externally-applied magnetic field enhanced biological has certain difficulty.Among the present invention a small amount of magnetic and strong magnetic particle (and biological affine hydrophilic substance) are attached in the biological plastics filler commonly used, the biological affinity, hydrophilicity and activity magnetic filling that the back formation of magnetizing has low-intensity magnetic field, when this filler being placed in the saprobia oxidative degradation equipment, (comprise fixed bed and fluidized-bed filler), each filler just is equal to the bio-reactor of a miniature complementary field, thereby can be easier to realize mangneto physical chemistry biological effect technology being applicable in useless (dirt) aquatic organism of reality is handled.
6. the present invention is owing to adopted suitable dispersed lubricant and reasonable process technology; therefore the processing of biological affinity, hydrophilicity and activity magnetic filling is very convenient; additive granulation in forcing machine or tablets press earlier; can be directly on injection moulding machine with the polymer base material particle mixed injection molding moulding of filler; simplify manufacturing procedure, saved production cost.
(4) embodiment
Embodiment 1: be base material (3680 gram) with the polypropylene GRANULES, take by weighing white mineral oil (25 gram), vegetables oil (15 gram) is wetting with magnetic (210 gram), then in stirrer with the mixture mixing of itself and polyvinyl alcohol (110 gram) and starch (100 restrain), move in the stirring bucket of injection moulding machine, add white mineral oil (30 gram) and vegetables oil (30 gram) again, mix the back injection moulding, make 70 of fillers, the proportion of made filler is about 0.94, again made filler is moved in the magnetic field about 5000 Gausses, after magnetizing, made biological affinity, hydrophilicity and activity magnetic filling has 10~30 Gausses' permanent low-intensity magnetic field.The sewage aerobic biological treatment system that the made biological affinity, hydrophilicity and activity magnetic filling and the plain polypropylene plastic filler of a plurality of identical shaped specifications placed the same terms respectively, carry out CODcr and remove simultaneous test, initial CODcr is 500-600mg/L in the system, activated sludge concentration is 3~5g/L, aeration rate 0.03-0.04m
3/ h.The CODcr measurement result shows, the water treatment system of the biological affinity, hydrophilicity and activity magnetic filling that use the present invention makes, and the CODcr clearance after 4 days has reached 8 1%, and the CODcr clearance of plain polypropylene plastic filler system has only 51%.
Embodiment 2: be base material (3100 gram) with the polypropylene GRANULES, take by weighing white mineral oil (40 gram), vegetables oil (35 gram), the mixture that will contain the magnetic (300 gram) of the strong magnetic particle of rare earth and calcium carbonate powders (60 restrain) is wetting, then in stirrer with itself and polyvinyl alcohol (250 gram), the mixture mixing of alginate calcium (100 gram) and starch (180 gram), move in the stirring bucket of injection moulding machine, add white mineral oil (70 gram) again, vegetables oil (65 gram), mix the back injection moulding, the proportion of obtained filler (70) is about 0.98, again made filler is moved in 10000 Gausses' the magnetic field, after magnetizing, made biological affinity, hydrophilicity and activity magnetic filling has 30~60 Gausses' permanent low-intensity magnetic field.The CODcr measurement result shows, the water treatment system of the biological affinity, hydrophilicity and activity magnetic filling that use the present invention makes, and the CODcr clearance after 3 days has reached 91%, and the CODcr clearance of plain polypropylene plastic filler system has only 48%.
Embodiment 3: be base material (3400 gram) with the polypropylene GRANULES, take by weighing white mineral oil (35 gram), vegetables oil (25 gram), the mixture that will contain the magnetic (250 gram) of the strong magnetic particle of rare earth and active carbon powder (45 restrain) is wetting, then in stirrer with the mixture mixing of itself and polyvinyl alcohol (180 gram) and alginate calcium (155 restrain), move in the stirring bucket of injection moulding machine, add white mineral oil (60 gram) again, vegetables oil (50 gram), mix the back injection moulding, the proportion of obtained filler (70) is about 0.96, again made filler is moved in 8000 Gausses' the magnetic field, after magnetizing, made biological affinity, hydrophilicity and activity magnetic filling has 20~50 Gausses' permanent low-intensity magnetic field.The CODcr measurement result shows, the water treatment system of the biological affinity, hydrophilicity and activity magnetic filling that use the present invention makes, and the CODcr clearance after 3 days has reached 88%, and the CODcr clearance of plain polypropylene plastic filler system has only 48%.
Claims (2)
1, a kind of water treatment preparation method of biological affinity, hydrophilicity and activity magnetic filling, it is characterized in that in polymer base material, sneaking into biological affine material, hydroaropic substance, magnetic and gac or magnetic and lime carbonate, add dispersed lubricant, after stirring, drop in the injection moulding machine, by the filling mould extrusion moulding, magnetize; Described polymer base material is polypropylene or polyethylene or polyvinyl chloride or polyester; The affine material of described biology is wherein one or more mixtures of alginate calcium, starch, gelatin, bone meal, Mierocrystalline cellulose, chitosan and derivative thereof, hydroxyapatite, polyvinyl acetate (PVA); Described hydrophilic substance is wherein one or more mixtures of polyvinyl alcohol, polyethylene glycol, polyacrylamide, agar, carrageenin, carrageenin, light-hardening resin, silica gel, diatomite; Described magnetic is wherein one or more mixtures of Z 250, ferric oxide, iron monoxide, barium ferrite, the strong magnetic particle of rare earth such as neodymium iron boron, or it soaks the magnetic that activation obtains in glutaraldehyde; Dispersed lubricant is wherein one or more mixtures of vegetable and animals oils, white mineral oil;
The parts by weight of above-mentioned raw materials consumption are as follows:
Polymer base material 50~100
Biological affine material 2~20
Hydrophilic substance 2~20
Magnetic 2~15
Gac or lime carbonate 1~5
Dispersed lubricant 1~10, wherein lubricant 0.5~5, dispersion agent 0.5~5.
2, the water treatment according to claim 1 preparation method of biological affinity, hydrophilicity and activity magnetic filling, it is characterized in that earlier with the part dispersed lubricant magnetic and gac or lime carbonate is wetting, and in stirrer with affine material of biology and hydrophilic substance mixing, mix with polymer base material again, move into together in the stirring hopper of injection moulding machine, and add remaining dispersed lubricant, inject filler, filler magnetizes through 5000~10000 Gausses' magnetic field, promptly can be made into magnetic filling.
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2003
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