CN103041695B - Functional microbe embedded slow-release composite filling material and preparation method thereof - Google Patents
Functional microbe embedded slow-release composite filling material and preparation method thereof Download PDFInfo
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- CN103041695B CN103041695B CN201210446960.1A CN201210446960A CN103041695B CN 103041695 B CN103041695 B CN 103041695B CN 201210446960 A CN201210446960 A CN 201210446960A CN 103041695 B CN103041695 B CN 103041695B
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a functional microbe embedded slow-release composite filling material. The functional microbe embedded slow-release composite filling material comprises the following raw materials in parts by weight: 15 to 25 parts of functional microbe loaded carrier, 5 to 10 parts of thoroughly-decomposed plant fibers, 15 to 20 parts of pearlite, 10 to 20 parts of calcium carbonate, 15 to 20 parts of cement, 1 to 5 parts of kaolin and 25 to 35 parts of an adhesive. The invention also discloses a preparation method of the filling material. The preparation method comprises the following steps of: preparing an organic carrier, and inoculating functional microbes subjected to screening and acclimatization onto the organic carrier to construct the functional microbe loaded carrier; and uniformly mixing the functional microbe loaded carrier, the thoroughly-decomposed plant fibers, the pearlite, the calcium carbonate, the cement and the kaolin, adding the adhesive into the mixture, uniformly stirring, and thus obtaining the functional microbe embedded slow-release composite filling material. The functional microbe embedded slow-release composite filling material prepared by the method can improve the structural stability of the filling material, and has functions of slowly releasing nutrients and adjusting the pH. According to the functional microbe embedded slow-release composite filling material and the preparation method thereof, materials are easily available, the raw material cost is lower, the manufacturing process is simple, and industrial production can be implemented easily.
Description
Technical field
The present invention relates to a kind of embedding functional microorganism slowly-releasing compounded mix, also relate to the preparation method of this filler simultaneously, belong to Air Pollution Control field of Environment Protection.
Background technology
Biofiltration process is that at present process can the most frequently used technology of biochemical foul smell (peculiar smell), and microorganism and filler are the keys in whole biofiltration device.Although microbe species plays a key effect in whole device microorganism operational mode, the core component of whole process is filler.Filler can provide suitable living environment to microbial growth, as: temperature, humidity, pH and nutriment etc., be the medium of microbe survival and growth, which determine the complexity of microorganism colonization and the quality of biomembrane performance.Whether easily specific area, the voidage of filler are relevant with the biomass of unit volume bed, also directly affect pressure drop size and the problem such as blocking of whole bed.The more important thing is, the removal of gaseous contaminant will arrive biophasic transmittance process through a gas phase to liquid phase again, and the specific area of filler determines gas phase and liquid phase and biophasic interfacial area, thus has a significant impact transmittance process.First, microorganism adheres to and grows gradually on porous aggregate, forms one deck biomembrane; Secondly, in air-flow, pollutant is adsorbed by porous aggregate in by the process of packed tower or biomembrane absorbs; Finally, in the metabolic processes of microorganism, the pollutant of filling adsorption or absorption is finally degraded to CO
2and H
2o.Biofiltration process because of can cost-effective process low concentration, atm number can biochemical VOCs, and operating cost is low, non-secondary pollution, is therefore widely used all over the world.
The general principle of biofiltration process is exactly the feature utilizing microbe to have comparatively strong, very fast adaptive capacity, it is tamed, can with pollutant (normally organic matter) for carbon source and the energy, and be translated into harmless, simple material (as C0
2, H
2o etc.) method.In traditional handicraft, biofiltration process adopts natural organic and inorganic material to do filler usually.Conventional natural organic has compost, wood chip, bark, corncob, peanut shell etc., and this kind of filler tolerance is poor, easily causes a body compacting, and resistance coefficient is comparatively large, and energy consumption is high, generally needs 2-3 to change once; Want to reach required clean-up effect, the microorganism in system needs renewed vaccination and domestication, and the time that this process need is longer.Therefore, the replacing of this kind of filler is given needs the system run continuously to bring great inconvenience.Inorganic filler mostly is haydite, perlite, active carbon, Raschig ring, zeolite and reticulated polyurethane foam etc.This kind of inert filler porosity is low, and lacks the required nutrient of growth of microorganism, needs constantly to add nutrient solution and pH adjusting agent, adds Operating Complexity on the one hand, add process operation cost on the other hand in running.
For above problem, Chinese scholars has carried out the research and development of a large amount of new packing.In recent years, the exploitation of compounded mix becomes a kind of new development trend.The old publication number building the Meng etc. in 2007 be 100457237 patent of invention disclose a kind of exhaust-gas treatment biologic packing material, this filler is lumps porous media, and specific area is large, and porosity is high; Have unit volume biomass large, pollutional load is high simultaneously; Filler bulk density is little, the advantage such as to be not easily compacted; The patent No. is the preparation method that the patented invention of CN102050516A relates to a kind of selective microbe filler.Adopt the method for being passed through by basic filler and soaking, spraying and contain biofilm in a large amount of desulfurization bacterium mother liquor at nutrient solution, prepare the filler containing selective microbe; Embedded immobilization technology is adopted with the present invention, the inoculation method on functional microorganism entrapped immobilized carrier is different.The publication numbers such as Zhao Kang be 101112673 the braiding of patent utilization bamboo cane, that arrangement forms bamboo block is stacking, and at a kind of new filler such as invention such as surface char attachment activating solution and activated sludge etc.Although there is respective advantage, ubiquity cost is higher, complex process, itself does not have the problems such as loading functional microorganism.Taiwan Wu-Chung Chan in 2011 etc. utilize polyethylene, guncotton, granular activated carbon and potassium nitrate compound to go out a kind of ball filler (A newtype od poly (vinyl alcohol)/nitrocellulose/granular activated carbon/KNO
3composite bead used as a biofiltermaterial.J Polym Res, 2011,18:1871-1877.).This filler energy slow-release nutrient material, have good physicochemical property, but filler itself does not have loading functional microorganism simultaneously, does not possess pH regulating action yet.This respect foreign study is more advanced, the people such as French Gaudin in 2008 adopt the compounds such as calcium carbonate, organic bond, urea phosphate to obtain cylindrical particle filler, this filler contains nutriment, there are good microbial adhesion characteristic and pH buffer capacity, but nutrient easily leaches in filler, lack slow release (Evaluation of a new packing material for H
2s removed by biofiltration.Biochemical EngineeringJournal, 2008,42 (2): 120-127.).
Summary of the invention
The object of this invention is to provide the embedding functional microorganism slowly-releasing compounded mix that a kind of mechanical strength is large, pH buffer capacity is strong, have nutrition slow-release.
In order to realize above object, the technical solution adopted in the present invention is to provide a kind of embedding functional microorganism slowly-releasing compounded mix, comprise the raw material of following weight portion: loading functional microbe carrier 15-25 part, string 5-10 part after becoming thoroughly decomposed, perlite 15-20 part, calcium carbonate 10-20 part, cement 15-20 part, kaolin 1-5 part, adhesive 25-35 part.
The preparation method of described loading functional microbe carrier, comprises the following steps:
1) preparation of raw material:
A) functional microorganism is tamed;
B) preparation of organic carrier: by cow dung and straw 2.0-2.5:1 Homogeneous phase mixing compost 7 ~ 10 days and get final product in mass ratio;
2) functional microorganism after domestication is inoculated on organic carrier according to mass fraction 4-8%, obtains loading functional microbe carrier.
Described organic carrier is Powdered.
Described perlite, cement and kaolin are Powdered.
Described adhesive is the waterglass of 5%.
Iron, magnesium, nickel and manganese element compound is added in described raw material.
The present invention also aims to provide a kind of preparation method embedding functional microorganism slowly-releasing compounded mix.
The technical solution adopted in the present invention is also to provide a kind of preparation method embedding functional microorganism slowly-releasing compounded mix, comprise the following steps: by loading functional microbe carrier, become thoroughly decomposed after string, perlite, calcium carbonate, cement, kaolin be uniformly mixed in proportion, add adhesive in mixture, stir, obtain embedding functional microorganism slowly-releasing compounded mix.
After described embedding functional microorganism slowly-releasing compounded mix is extruded, in ventilation, shady and cool surrounding air, expose 3d, filler particles intensity reaches the requirement of dress tower.
Functional microorganism is for utilizing conventional art and modern biotechnology, filter out the various bacterial classification strong especially to foul smell molecule affinity, and Bacterial community is transformed and regulates and controls, improve its degradation rate, expand degraded substrate spectrum, thus obtain the microorganism fungus kind of pollutant in energy efficient degradation foul waste gas.
Functional microorganism slowly-releasing compounded mix of the present invention is composited by multiple organic media and inorganic medium, organic media is organic carrier, become thoroughly decomposed after string; Inorganic medium has perlite, calcium carbonate, cement, kaolin and adhesive.Wherein, cement, perlite are as the basic aggregate of filler; Kaolin has certain viscosity, can provide the mineral matter elements such as Fe, Ti, Al, Si again to microorganism simultaneously; String after becoming thoroughly decomposed, as filler basic framework, solves the problem that in wet environment, filler expands; Perlite can reduce the density of filler; Calcium carbonate can be used as pH buffer; Functional microorganism is inoculated on organic carrier, builds loading functional microbe carrier and nutrition slow-release source, be not only that the biofilm time is shortened in the startup of biological tower, and there is good nutrition slow-release performance.
The present invention prepares embedding functional microorganism slowly-releasing compounded mix and adopts bionics thought, is wrapped within the material such as nutriment, pH buffer, forms the microenvironment being applicable to growth of microorganism by embedding techniques by loading functional microbe carrier.The present invention prepares embedding functional microorganism slowly-releasing compounded mix and adopts inorganic bond dead load functional microorganism carrier, nutriment, pH buffer substance and aglite etc., not only improve the structural stability of filler, and there is nutrition slow-release function and pH regulatory function.Along with organic carrier constantly decomposes, the specific area, porosity etc. of filler increase thereupon, can strengthen deodorizing effect.The present invention draws materials conveniently, cost of material is lower, manufacture craft is simple, is easy to suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 product;
In figure: the string 6-inorganic bond after 1-lightweight inorganic aggregate 2-loading functional microbe carrier 3-kaolin 4-pH buffer 5-becomes thoroughly decomposed
Fig. 2 is the SEM picture before embodiment 1 product dress tower runs;
Fig. 3 is the SEM picture after embodiment 1 product dress tower runs 30d.
Detailed description of the invention
Embodiment 1
The embedding functional microorganism slowly-releasing compounded mix that the present embodiment provides, the raw material by comprising following weight portion: loading functional microbe carrier 15 parts, 5 parts, the sawdust after becoming thoroughly decomposed, perlite 20 parts, 15 parts, calcium carbonate, cement 18 parts, kaolin 1 part, 5% waterglass 25 parts.
The preparation method of the embedding functional microorganism slowly-releasing compounded mix that the present embodiment provides, comprises following steps:
1, the preparation of loading functional microbe carrier:
1) preparation of raw material:
A) conventional art and modern biotechnology is first utilized, filter out the various bacterial classification strong especially to foul smell molecule affinity, and Bacterial community is transformed and regulates and controls, improve its degradation rate, expand degraded substrate spectrum, thus obtain the microorganism fungus kind of pollutant in energy efficient degradation foul waste gas, i.e. functional microorganism;
B) by cow dung and straw 2.0:1 Homogeneous phase mixing compost 7 days in mass ratio, obtained organic carrier;
2) functional microorganism after domestication is inoculated on organic carrier according to mass fraction 4%, is built into loading functional microbe carrier.
2, by loading functional microbe carrier 15 parts, become thoroughly decomposed after 5 parts, sawdust, perlite 20 parts, 15 parts, calcium carbonate, cement 18 parts, kaolin 1 part, stir 10min to mix, again 5% waterglass 25 parts is slowly added in mixture, after stirring 15min mixes, obtain embedding functional microorganism slowly-releasing compounded mix.
After embedding functional microorganism slowly-releasing compounded mix is extruded, in ventilation, shady and cool surrounding air, expose 3d, filler particles intensity reaches the requirement of dress tower.
The physicochemical property test result of embedding functional microorganism slowly-releasing compounded mix prepared by the present embodiment is as shown in table 1.
The structure of the present embodiment product as shown in Figure 1.
SEM figure before the present embodiment product dress tower and after dress tower operation 30d respectively as shown in Figures 2 and 3.Fig. 2 and Fig. 3 compares discovery, after the present embodiment product dress tower runs 30d, filling surface degree of roughness obviously increases, there is the space that many microbial mineralizations are formed, but filler coating still keeps fine and close structure, there is not the phenomenon of breaking, disintegrating, show that embedding functional microorganism slowly-releasing compounded mix of the present invention has good resistance to biological corrosion.
Embodiment 2
The embedding functional microorganism slowly-releasing compounded mix that the present embodiment provides, comprises the raw material of following weight portion: loading functional microbe carrier 25 parts, the peanut shell fine powder after becoming thoroughly decomposed 7 parts, perlite 15 parts, 10 parts, calcium carbonate, cement 20 parts, kaolin 3 parts, 5% waterglass 30 parts.
The preparation method of the embedding functional microorganism slowly-releasing compounded mix that the present embodiment provides, comprises following steps:
1, the preparation of loading functional microbe carrier:
1) preparation of raw material:
A) conventional art and modern biotechnology is first utilized, filter out the various bacterial classification strong especially to foul smell molecule affinity, and Bacterial community is transformed and regulates and controls, improve its degradation rate, expand degraded substrate spectrum, thus obtain the microorganism fungus kind of pollutant in energy efficient degradation foul waste gas, i.e. functional microorganism;
B) by cow dung and straw 2.5:1 Homogeneous phase mixing compost 8.5 days in mass ratio, obtained organic carrier;
2) functional microorganism after domestication is inoculated on organic carrier according to mass fraction 8%, is built into loading functional microbe carrier.
2, by loading functional microbe carrier 25 parts, peanut shell fine powder after becoming thoroughly decomposed 7 parts, perlite 15 parts, 10 parts, calcium carbonate, cement 20 parts, kaolin 3 parts, stir 10min to mix, again 5% waterglass 30 parts is slowly added in mixture, stir 15min and mix, obtain embedding functional microorganism slowly-releasing compounded mix.
After embedding functional microorganism slowly-releasing compounded mix is extruded, in ventilation, shady and cool surrounding air, expose 3d, filler particles intensity reaches the requirement of dress tower.
The physicochemical property test result of embedding functional microorganism slowly-releasing compounded mix prepared by the present embodiment is as shown in table 1.
Embodiment 3
The embedding functional microorganism slowly-releasing compounded mix that the present embodiment provides, comprises the raw material of following weight portion: loading functional microbe carrier 20 parts, 10 parts, the sawdust after becoming thoroughly decomposed, perlite 17 parts, 20 parts, calcium carbonate, cement 15 parts, kaolin 5 parts, 5% waterglass 35 parts.
The preparation method of the embedding functional microorganism slowly-releasing compounded mix that the present embodiment provides, comprises following steps:
1, the preparation of loading functional microbe carrier:
1) preparation of raw material:
A) conventional art and modern biotechnology is first utilized, filter out the various bacterial classification strong especially to foul smell molecule affinity, and Bacterial community is transformed and regulates and controls, improve its degradation rate, expand degraded substrate spectrum, thus obtain the microorganism fungus kind of pollutant in energy efficient degradation foul waste gas, i.e. functional microorganism;
B) by cow dung and straw 2.25:1 Homogeneous phase mixing compost 10 days in mass ratio, obtained organic carrier;
2) functional microorganism after domestication is inoculated on organic carrier according to mass fraction 6%, is built into loading functional microbe carrier.
2, by loading functional microbe carrier 20 parts, 10 parts, sawdust after becoming thoroughly decomposed, perlite 17 parts, 20 parts, calcium carbonate, cement 15 parts, kaolin 5 parts, stir 10min to mix, again 5% waterglass 35 parts is slowly added in mixture, stir 15min and mix, obtain embedding functional microorganism slowly-releasing compounded mix.
After embedding functional microorganism slowly-releasing compounded mix is extruded, in ventilation, shady and cool surrounding air, expose 3d, filler particles intensity reaches the requirement of dress tower.
The physicochemical property test result of embedding functional microorganism slowly-releasing compounded mix prepared by the present embodiment is as shown in table 1.
The physicochemical property of table 1 embodiment 1-3 preparing product
*：N∈(0-10)
Wherein: bulk density is the ratio of packing quality and stacking volume; Specific area is the gross area that unit mass material has; Porosity is in non-coherent material stacking volume, and the voidage between particle accounts for the ratio of cumulative volume; Saturated aqueous rate be packing samples water suction saturated after, measured value after 80 DEG C of oven drying 8h; PH is that 50g filler immerses in 500ml distilled water, records after machinery concussion 30min; Granule strength is recorded by detector for strength of particles; Bacterium, fungi, actinomyces record with spread plate.
To the process of simulated sulfuration hydrogen waste gas
On the embedding functional microorganism slowly-releasing compounded mix prepare embodiment 1 and market, the light ceramic filler (purchased from the prosperous billows building materials in Zhengzhou) bought carries out the process contrast of hydrogen sulfide simulated exhaust.
Run parallel the existing two cover biofiltration reactors in laboratory, reactor height 60cm, tower internal diameter 16cm, filler packed height 40cm, filler volume 8.0L.Reactor 1 fills the embedding functional microorganism slowly-releasing compounded mix that embodiment 1 manufactures, and reactor 2 fills the ceramics filling that market is bought.Two cover reactor service conditions are identical, and Treatment of Hydrogen Sulfide Waste Gas amount is 400L/h, and gas time of staying in filler is 72s.Treatment effect is as shown in table 2:
Table 2 two kinds of reactors are to H
2s removal efficiency compares
Result shows the treatment effect that the present invention embeds functional microorganism slowly-releasing compounded mix reactor 1 pair of hydrogen sulfide and is obviously better than haydite reactor 2, and the pH of reactor 2 declines comparatively obvious, and the compounded mix in reactor 1 effectively can maintain the stability of pH.
Claims (7)
1. an embedding functional microorganism slowly-releasing compounded mix, it is characterized in that, comprise the raw material of following weight portion: loading functional microbe carrier 15-25 part, string 5-10 part after becoming thoroughly decomposed, perlite 15-20 part, calcium carbonate 10-20 part, cement 15-20 part, kaolin 1-5 part, adhesive 25-35 part;
Described embedding functional microorganism slowly-releasing compounded mix is prepared by the method that comprises the following steps and obtains: by loading functional microbe carrier, become thoroughly decomposed after string, perlite, calcium carbonate, cement, kaolin be uniformly mixed in proportion, add adhesive in mixture, stir, obtain embedding functional microorganism slowly-releasing compounded mix;
Described loading functional microbe carrier is prepared by the method comprised the following steps and obtains:
1) preparation of raw material:
A) functional microorganism is tamed;
B) preparation of organic carrier: by cow dung and straw 2.0-2.5:1 Homogeneous phase mixing compost 7 ~ 10 days and get final product in mass ratio;
2) functional microorganism after domestication is inoculated on organic carrier according to mass fraction 4-8%, obtains loading functional microbe carrier.
2. one embedding functional microorganism slowly-releasing compounded mix according to claim 1, it is characterized in that, described organic carrier is Powdered.
3., according to the one embedding functional microorganism slowly-releasing compounded mix described in claim 1, it is characterized in that, described perlite, cement and kaolin are Powdered.
4., according to the one embedding functional microorganism slowly-releasing compounded mix described in claim 1, it is characterized in that, described adhesive is the waterglass of 5%.
5., according to the one embedding functional microorganism slowly-releasing compounded mix described in claim 1, it is characterized in that, in described raw material, add iron, magnesium, nickel and manganese element compound.
6. the preparation method of the embedding functional microorganism slowly-releasing compounded mix as described in claim 1, it is characterized in that, comprise the following steps: by loading functional microbe carrier, become thoroughly decomposed after string, perlite, calcium carbonate, cement, kaolin be uniformly mixed in proportion, add adhesive in mixture, stir, obtain embedding functional microorganism slowly-releasing compounded mix.
7. according to a kind of preparation method embedding functional microorganism slowly-releasing compounded mix described in claim 6, it is characterized in that, after described embedding functional microorganism slowly-releasing compounded mix is extruded, in ventilation, shady and cool surrounding air, expose 3d, filler particles intensity reaches the requirement of dress tower.
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| CN103818998A (en) * | 2014-03-11 | 2014-05-28 | 西南科技大学 | Method for preparing biomass microbial carrier |
| CN104548921B (en) * | 2014-12-23 | 2016-09-21 | 北京伊普国际水务有限公司 | Biological deodorizing filler and preparation method thereof |
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| CN104692762B (en) * | 2015-02-09 | 2018-01-23 | 中山大学 | A kind of compound bio deodorizing nourishing carrier and preparation method thereof |
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| CN108126514B (en) * | 2017-08-15 | 2024-03-15 | 云南万魁生物科技有限公司 | Cushion for purifying air |
| CN107988197B (en) * | 2017-12-25 | 2019-02-12 | 桑德生态科技有限公司 | Using plant fiber as Microorganism-embeddcarrier carrier of supporter and preparation method thereof |
| CN108325378B (en) * | 2018-04-25 | 2021-07-23 | 河南正达环保科技有限公司 | Deodorization microbial filler and preparation method thereof |
| CN108396024A (en) * | 2018-05-21 | 2018-08-14 | 郑州大学 | A kind of micro-embedded pseudomonas putida composite biological packing and preparation method |
| CN109694134A (en) * | 2019-01-24 | 2019-04-30 | 张庆堂 | A kind of porosity sewage purification bamboo ball and its processing method |
| CN112322571B (en) * | 2020-10-28 | 2022-02-08 | 浙江海洋大学 | Lipophilic microbial nutrient |
| CN114177767B (en) * | 2021-12-06 | 2024-03-29 | 北京北排装备产业有限公司 | Biological deodorizing filler and preparation method and application thereof |
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