CN114177767B - Biological deodorizing filler and preparation method and application thereof - Google Patents
Biological deodorizing filler and preparation method and application thereof Download PDFInfo
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- CN114177767B CN114177767B CN202111511917.4A CN202111511917A CN114177767B CN 114177767 B CN114177767 B CN 114177767B CN 202111511917 A CN202111511917 A CN 202111511917A CN 114177767 B CN114177767 B CN 114177767B
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- 239000000945 filler Substances 0.000 title claims abstract description 49
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 42
- 239000002131 composite material Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000005507 spraying Methods 0.000 claims abstract description 29
- 239000007864 aqueous solution Substances 0.000 claims abstract description 28
- 241000193830 Bacillus <bacterium> Species 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 24
- 239000011259 mixed solution Substances 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 18
- 239000002068 microbial inoculum Substances 0.000 claims abstract 2
- 238000004332 deodorization Methods 0.000 claims description 37
- 238000011049 filling Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 230000001580 bacterial effect Effects 0.000 claims description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
- 235000010413 sodium alginate Nutrition 0.000 claims description 13
- 239000000661 sodium alginate Substances 0.000 claims description 13
- 229940005550 sodium alginate Drugs 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 12
- 241000194107 Bacillus megaterium Species 0.000 claims description 9
- 244000063299 Bacillus subtilis Species 0.000 claims description 9
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 9
- 159000000003 magnesium salts Chemical class 0.000 claims description 9
- 150000002696 manganese Chemical class 0.000 claims description 9
- 150000002829 nitrogen Chemical class 0.000 claims description 9
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 9
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical group [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 8
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 150000003017 phosphorus Chemical class 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 241000193410 Bacillus atrophaeus Species 0.000 claims description 6
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 6
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 6
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 6
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 241000193749 Bacillus coagulans Species 0.000 claims description 5
- 229940054340 bacillus coagulans Drugs 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 4
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 4
- 229910021380 Manganese Chloride Inorganic materials 0.000 claims description 4
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical group Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 claims description 4
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 4
- 239000001099 ammonium carbonate Substances 0.000 claims description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 4
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 4
- 239000011565 manganese chloride Substances 0.000 claims description 4
- 235000002867 manganese chloride Nutrition 0.000 claims description 4
- 229940099607 manganese chloride Drugs 0.000 claims description 4
- 229940099596 manganese sulfate Drugs 0.000 claims description 4
- 239000011702 manganese sulphate Substances 0.000 claims description 4
- 235000007079 manganese sulphate Nutrition 0.000 claims description 4
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 4
- 239000006012 monoammonium phosphate Substances 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical group [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 4
- 239000008262 pumice Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 238000006136 alcoholysis reaction Methods 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 2
- 229910000397 disodium phosphate Inorganic materials 0.000 claims description 2
- 235000019800 disodium phosphate Nutrition 0.000 claims description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims 4
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 28
- 244000005700 microbiome Species 0.000 abstract description 26
- 230000008569 process Effects 0.000 abstract description 15
- 235000016709 nutrition Nutrition 0.000 abstract description 5
- 230000035764 nutrition Effects 0.000 abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 235000015097 nutrients Nutrition 0.000 description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 230000035755 proliferation Effects 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 238000007605 air drying Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011256 inorganic filler Substances 0.000 description 4
- 229910003475 inorganic filler Inorganic materials 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 239000012766 organic filler Substances 0.000 description 4
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 229910001603 clinoptilolite Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000013268 sustained release Methods 0.000 description 2
- 239000012730 sustained-release form Substances 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N11/00—Carrier-bound or immobilised enzymes; Carrier-bound or immobilised microbial cells; Preparation thereof
- C12N11/02—Enzymes or microbial cells immobilised on or in an organic carrier
- C12N11/04—Enzymes or microbial cells immobilised on or in an organic carrier entrapped within the carrier, e.g. gel or hollow fibres
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N11/00—Carrier-bound or immobilised enzymes; Carrier-bound or immobilised microbial cells; Preparation thereof
- C12N11/02—Enzymes or microbial cells immobilised on or in an organic carrier
- C12N11/08—Enzymes or microbial cells immobilised on or in an organic carrier the carrier being a synthetic polymer
- C12N11/082—Enzymes or microbial cells immobilised on or in an organic carrier the carrier being a synthetic polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C12N11/084—Polymers containing vinyl alcohol units
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N11/00—Carrier-bound or immobilised enzymes; Carrier-bound or immobilised microbial cells; Preparation thereof
- C12N11/02—Enzymes or microbial cells immobilised on or in an organic carrier
- C12N11/10—Enzymes or microbial cells immobilised on or in an organic carrier the carrier being a carbohydrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Environmental & Geological Engineering (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Dispersion Chemistry (AREA)
- Treating Waste Gases (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention belongs to the technical field of malodorous gas biological treatment, and discloses a biological deodorizing filler, and a preparation method and application thereof. The method comprises the following steps: uniformly spraying the aqueous solution of the composite substance on the surface of the natural porous ore material while stirring the natural porous ore material, and drying to obtain a composite material; and (3) spraying the mixed solution of the embedded slow-release agent and the bacillus spore microbial inoculum on the surface of the composite material while stirring the composite material, and drying to obtain the biological deodorizing filler. The invention can continuously and stably provide needed nutrition and trace substances for the embedded microorganisms in the malodorous gas treatment process, and has the advantages of high deodorizing efficiency, stable operation, long service life and the like.
Description
Technical Field
The invention belongs to the technical field of malodorous gas biological treatment, and particularly relates to a biological deodorizing filler, and a preparation method and application thereof.
Background
With the improvement of social progress and living standard, the public demand for good ecological environment is also higher and higher, and the influence of malodorous gas generated in the sewage treatment process on the atmospheric pollution and the surrounding environment is attracting attention. Currently, the malodor pollution treatment technology of a sewage treatment plant mainly comprises a washing absorption method, a biological method, an adsorption method, an advanced oxidation method, a masking method and the like, wherein the biological deodorization technology has the advantages of low treatment cost, good effect, no secondary pollution and the like, is the most widely applied deodorization technology of the sewage treatment plant, but is easily influenced by pollution load and component change, unstable working condition and external environment temperature, and has the problems of unstable treatment effect, low removal rate of pollutants (especially organic pollutants) and the like.
The core of the biological deodorization technology is a biological filler and a microbial community. Therefore, the improvement of biological fillers and the improvement of the abundance and activity of high-efficiency deodorizing microorganisms are key points of the depth and stability of malodorous gas removal. The existing deodorizing biological filler can be divided into three main types of inorganic filler, organic filler and composite filler, wherein the inorganic filler is commonly bamboo charcoal, ceramsite, volcanic rock and the like; the organic filler is commonly artificially synthesized organic materials such as polyolefin, polyurethane and the like, and natural organic materials such as bark, coconut shells, straw and the like; the composite filler is prepared by simply mixing or compression molding inorganic filler and organic filler. Inorganic filler and synthetic organic material have advantages such as intensity is big, longe-lived, but also have the shortcoming such as lack of nutrient substance, film forming speed slow and treatment effect unstability that microorganism needed to grow. Natural organic fillers and composite fillers are easy to proliferate microorganisms, but have the problems of low strength, short service life and the like, and have the problem of secondary pollution caused by organic matter spoilage.
At present, CN113305731A and CN102910727B provide a method for preparing a deodorizing biological filler by adding a nutrient and a sustained release agent in the polishing process of artificially sintered ceramic particles, and the preparation method provides a method for preparing the deodorizing biological filler by using ceramic particles with high strength and long service life as a base material, and improving the utilization efficiency and period of the nutrient by adding the nutrient and the sustained release agent, thereby being beneficial to improving the nutrient needed by microorganisms and further beneficial to the proliferation of the microorganisms, but the technology is found through multiple field practices and theoretical evidence: the existence of the porous structure of the ceramsite material is unfavorable for nutrient permeation, so that the nutrient loading is low. In addition, the ceramsite is mostly inert oxide after high-temperature sintering, and is not easy to be utilized by microorganisms. In addition, the technology has the defects of incomplete addition of nutrient elements and no addition of special microorganisms.
Therefore, a new biological deodorizing filler, a preparation method and application are needed to be provided.
Disclosure of Invention
The invention aims to overcome the defects of biological fillers in the existing malodorous gas biological treatment and provides a biological deodorizing filler, a preparation method and application thereof. The invention can continuously and stably provide needed nutrition and trace substances for the embedded microorganisms in the malodorous gas treatment process, and has the advantages of high deodorizing efficiency, stable operation, long service life and the like.
In order to achieve the above object, a first aspect of the present invention provides a method for preparing a biological deodorizing filler, comprising the steps of:
s1: uniformly spraying a composite substance aqueous solution on the surface of a natural porous ore material while stirring the natural porous ore material, and drying to obtain a composite material;
s2: and spraying the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent on the surface of the composite material while stirring the composite material, and drying to obtain the biological deodorizing filler.
According to the present invention, preferably, the natural porous ore material is at least one of pumice, volcanic rock and zeolite, and has a particle size ranging from 2 to 5cm, a water content of less than 30%, and a particle shape of a sphere or an approximate sphere, without obvious edges.
According to the present invention, preferably, in step S1, the stirring treatment is performed at preset time intervals, the total time of the stirring treatment is 20 to 60 minutes, and the time interval of each stirring is not more than 5 minutes.
According to the present invention, preferably, in step S1, the temperature of the drying treatment is 25 to 105 ℃; the water content of the composite material is lower than 60%.
According to the invention, preferably, the solute of the aqueous solution of composite substances comprises 0.1-3% of phosphorus salt, 0.1-3% of nitrogen salt, 0.1-0.5% of potassium salt, 0.5-1% of magnesium salt and 0.1-0.3% of manganese salt, based on the total weight of the natural porous ore material.
According to the present invention, preferably, the method for preparing the aqueous solution of a composite substance comprises: and respectively preparing the phosphorus salt, the nitrogen salt, the potassium salt, the magnesium salt and the manganese salt into aqueous solutions, and then mixing to obtain the composite substance aqueous solution.
According to the present invention, preferably, the phosphorus salt is at least one of ammonium dihydrogen phosphate, sodium hydrogen phosphate, and potassium dihydrogen phosphate; the concentration of the phosphorus salt aqueous solution is not less than 80% of its saturation solubility.
According to the invention, preferably, the nitrogen salt is monoammonium phosphate and/or ammonium bicarbonate; the concentration of the nitrogen salt aqueous solution is not less than 80% of its saturation solubility.
According to the present invention, preferably, the potassium salt is monopotassium phosphate and/or potassium chloride; the concentration of the potassium salt aqueous solution is not less than 80% of its saturation solubility.
According to the present invention, preferably, the magnesium salt is magnesium chloride and/or magnesium sulfate; the concentration of the magnesium salt aqueous solution is not less than 80% of its saturation solubility.
According to the present invention, preferably, the manganese salt is manganese chloride and/or manganese sulfate; the concentration of the manganese salt aqueous solution is not less than 80% of its saturation solubility.
According to the present invention, preferably, in step S2, the stirring treatment is performed at preset time intervals, the total time of the stirring treatment is 15-30min, and the time interval of each stirring is not more than 2min.
According to the present invention, preferably, in step S2, the solute of the mixed solution of the embedding slow-release agent and the bacillus spore agent comprises 5 to 10% of the slow-release embedding agent and 2 to 5% of the bacillus spore agent, based on the total weight of the natural porous ore material.
According to the invention, preferably, in the step S2, the slow release embedding agent is a mixture of polyvinyl alcohol and sodium alginate, and the mass ratio of the polyvinyl alcohol to the sodium alginate is 2-5:1; the polymerization degree of the polyvinyl alcohol is 17-22 ten thousand, and the alcoholysis degree is more than 99%. In the invention, the preparation method of the slow-release embedding agent comprises the following steps: and heating the polyvinyl alcohol and sodium alginate in a water bath at 90-95 ℃ to dissolve, and then cooling the mixed solution to 50-60 ℃ to obtain the mixture of the polyvinyl alcohol and the sodium alginate.
According to the present invention, preferably, in step S2, the bacillus spore agent is at least one of bacillus subtilis, bacillus megaterium, bacillus coagulans, and bacillus atrophaeus.
According to the present invention, preferably, in step S2, the temperature of the drying treatment is 25 to 105 ℃; the water content of the biological deodorization filling is lower than 40%.
The second aspect of the invention provides the biological deodorization filler prepared by the preparation method of the biological deodorization filler.
In a third aspect, the present invention provides the use of said bio-deodorizing fillers in bio-drip filtration and/or bio-filtration deodorizing processes.
According to the present invention, preferably, the biological deodorizing filler has a filling height ranging from 1.5 to 2.5m; the residence time of malodorous gas at the biological deodorizing filler is 15-30s.
According to the present invention, preferably, when the biological deodorizing filler is used in the biological trickling filtration process, the spraying amount of the spraying liquid ranges from 0.5 to 1L of water/m 3 Filling material h, wherein the spraying interval is 6-24h, and the spraying time is 0.5-2min each time, so that the water content of the biological deodorization filling material is 70-80%; the operating temperature of the biological deodorization packing ranges from 15 ℃ to 30 ℃, and if the operating temperature is too low or too high, the microorganism proliferation time can be correspondingly increased.
In the present invention, in a bio-trickling filtration and/or bio-filtration deodorization process, samples of the bio-deodorization packing are periodically taken, and the amount of microorganism growth in the packing is detected using an MPN assay. Bacteria when calculated by wet weight fillerThe detection result of the total number of falling is 1 multiplied by 10 8 The bacillus colony count is not lower than 10 percent per gram, namely the requirement of the proliferation target of the embedded microorganism is met.
The technical scheme of the invention has the following beneficial effects:
(1) The base material of the biological deodorizing filler adopts natural porous ore materials, and has the advantages of developed pores, high content of inorganic active ingredients, high mechanical strength, long service life and the like. According to the growth requirement of embedded special microorganisms, the natural porous ore material is modified and regulated, and a certain amount of composite nutrition and trace substances such as nitrogen salt, phosphorus salt, potassium salt, magnesium salt and manganese salt are loaded. The modified regulation and control can meet the growth requirement of embedded microorganisms, can also play a role in pH buffering, and provides a proper growth environment for microorganisms.
(2) The slow-release embedding agent can be used as a slow-release agent, continuously and stably uses the nutrition and microelements which are modified and controlled to be loaded for embedding microorganisms, is also an embedding agent for special microorganisms, reduces the loss of the microorganisms and provides a better living environment. The embedded special microorganism can efficiently remove inorganic pollutants such as hydrogen sulfide, ammonia and the like, and more importantly, has higher removal rate for organic pollutants such as methyl mercaptan, dimethyl sulfide, trimethylamine and the like, and can realize the advanced treatment of malodorous gas.
(3) The filler-loaded composite can continuously and stably provide needed nutrition and trace substances for the embedded microorganisms in the malodorous gas treatment process by organically combining the slow-release composite material and the embedded special microorganism, and is beneficial to improving the growth quantity and stability of the special deodorizing microorganisms on the filler. Therefore, the filler has the advantages of high deodorizing efficiency, stable operation, long service life and the like.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
The embodiment provides a preparation method of biological deodorization filling, which comprises the following steps:
s1: 1000kg of pumice stone with no obvious edges and corners, the grain diameter range of 2-3cm and the water content of less than 30% is stirred, and meanwhile, the aqueous solution of the composite material is uniformly sprayed on the surface of the pumice stone, and then the composite material is obtained after the drying treatment;
wherein,
the stirring treatment is carried out according to preset time intervals, the total stirring treatment time is 30min, and the stirring interval time is not more than 5min;
the drying treatment is natural air drying for 72 hours; the water content of the composite material is lower than 60%.
The solute of the complex substance aqueous solution comprises: 17kg of monoammonium phosphate, 3kg of potassium chloride, 7.5kg of magnesium sulfate and 1kg of manganese chloride.
S2: and spraying the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent on the surface of the composite material while stirring the composite material, and drying to obtain the biological deodorizing filler.
Wherein,
the stirring treatment is carried out according to preset time intervals, the total stirring treatment time is 15min, and the stirring interval time is not more than 2min;
the solute of the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent comprises: 60kg of a mixture of polyvinyl alcohol and 30kg of sodium alginate, and 30kg of a mixture of Bacillus subtilis, bacillus megaterium and Bacillus coagulans;
and heating polyvinyl alcohol and sodium alginate in a water bath at 90-95 ℃ to dissolve, cooling the mixed solution to 50 ℃, and adding 30kg of a mixture of bacillus subtilis, bacillus megaterium and bacillus coagulans to obtain a mixed solution of the embedded slow-release agent and the bacillus spore microbial agent.
The temperature of the drying treatment is natural air drying, and the biological deodorization filling material is packaged for standby after the water content is lower than 40%.
The biological deodorizing filler obtained by the method is applied to a biological drip deodorizing process, wherein:
(1) The filling height range of the biological deodorization filling material is 1.5m; the retention time of malodorous gas at the biological deodorizing filler is 20s;
(2) The spraying amount of the spraying liquid is 0.5L water/m 3 Filling material h, wherein the spraying interval is 12h;
after the biological drip filtration deodorization process is operated for two weeks, a biological deodorization filler sample is extracted to determine the total number of bacterial colonies, and the result is 5.3x10 8 The colony number of bacillus is 14.3 percent per gram, thereby meeting the proliferation target requirement of embedded microorganisms. At this time, the removal rates of hydrogen sulfide and ammonia are over 95%, the removal rates of methyl mercaptan and non-methane total hydrocarbon are over 85%, and various indexes including odor concentration and the like meet the national current exhaust stack atmospheric pollutant emission limit.
Example 2
The embodiment provides a preparation method of biological deodorization filling, which comprises the following steps:
s1: 1000kg of volcanic rock which has no obvious edges and corners and has the grain diameter range of 2-5cm and the water content of less than 30% is stirred, and meanwhile, the aqueous solution of the composite material is uniformly sprayed on the surface of the volcanic rock, and then the composite material is obtained after the drying treatment;
wherein,
the stirring treatment is carried out according to preset time intervals, the total stirring treatment time is 60min, and the stirring interval time is not more than 5min;
the drying treatment is drying at 105 ℃; the water content of the composite material is lower than 60%.
The solute of the complex substance aqueous solution comprises: 22kg of monopotassium phosphate, 28kg of ammonium bicarbonate, 5kg of magnesium chloride and 2kg of manganese sulfate.
S2: and spraying the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent on the surface of the composite material while stirring the composite material, and drying to obtain the biological deodorizing filler.
Wherein,
the stirring treatment is carried out according to preset time intervals, the total stirring treatment time is 30min, and the stirring interval time is not more than 2min;
the solute of the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent comprises: 70kg of a mixture of polyvinyl alcohol and 30kg of sodium alginate, and 50kg of a mixture of Bacillus subtilis, bacillus megaterium and Bacillus atrophaeus;
and heating polyvinyl alcohol and sodium alginate in a water bath at 90-95 ℃ to dissolve, cooling the mixed solution to 50 ℃, and adding 50kg of a mixture of bacillus subtilis, bacillus megaterium and bacillus atrophaeus to obtain a mixed solution of the embedded slow-release agent and the bacillus spore microbial agent.
The temperature of the drying treatment is natural air drying, and the biological deodorization filling material is packaged for standby after the water content is lower than 40%.
The biological deodorizing filler obtained by the method is applied to a biological drip deodorizing process, wherein:
(1) The filling height range of the biological deodorization filling material is 2m; the retention time of malodorous gas at the biological deodorizing filler is 15s;
(2) The spraying amount of the spraying liquid is 0.75L water/m 3 Filling material h, wherein the spraying interval is 12h;
after the biological drip filtration deodorization process is operated for two weeks, a biological deodorization filler sample is extracted to determine the total number of bacterial colonies, and the result is 7.1x10 8 The colony number of bacillus is 20.1 percent per gram, thereby meeting the proliferation target requirement of embedded microorganisms. At this time, the removal rates of hydrogen sulfide and ammonia are over 95%, the removal rates of methyl mercaptan and non-methane total hydrocarbon are over 85%, and various indexes including odor concentration and the like meet the national current exhaust stack atmospheric pollutant emission limit.
Example 3
The embodiment provides a preparation method of biological deodorization filling, which comprises the following steps:
s1: 1000kg clinoptilolite with no obvious edges and corners, the grain diameter range of 2-4cm and the water content of less than 30% is stirred, and meanwhile, the aqueous solution of the composite material is uniformly sprayed on the surface of clinoptilolite, and then the composite material is obtained after drying treatment;
wherein,
the stirring treatment is carried out according to preset time intervals, the total stirring treatment time is 20min, and the stirring interval time is not more than 5min;
the drying treatment is drying at 105 ℃; the water content of the composite material is lower than 60%.
The solute of the complex substance aqueous solution comprises: 7kg of monoammonium phosphate, 3kg of monopotassium phosphate, 10kg of magnesium sulfate and 3kg of manganese chloride.
S2: and spraying the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent on the surface of the composite material while stirring the composite material, and drying to obtain the biological deodorizing filler.
Wherein,
the stirring treatment is carried out according to preset time intervals, the total stirring treatment time is 20min, and the stirring interval time is not more than 2min;
the solute of the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent comprises: 40kg of a mixture of polyvinyl alcohol and 10kg of sodium alginate, and 20kg of a mixture of Bacillus subtilis, bacillus megaterium and Bacillus atrophaeus;
and heating polyvinyl alcohol and sodium alginate in a water bath at 90-95 ℃ to dissolve, cooling the mixed solution to 50 ℃, and adding 20kg of a mixture of bacillus subtilis, bacillus megaterium and bacillus atrophaeus to obtain a mixed solution of the embedded slow-release agent and the bacillus spore microbial agent.
The temperature of the drying treatment is natural air drying, and the biological deodorization filling material is packaged for standby after the water content is lower than 40%.
The biological deodorizing filler obtained by the method is applied to a biological drip deodorizing process, wherein:
(1) The filling height range of the biological deodorization filling material is 1.8m; the retention time of malodorous gas at the biological deodorizing filler is 20s;
(2) The spraying amount of the spraying liquid is 1L water/m 3 Filling material, wherein the spraying interval is 6h;
after the biological drip filtration deodorization process is operated for two weeks, a biological deodorization filler sample is extracted to determine the total number of bacterial colonies, and the result is 1.5x10 8 The colony number of bacillus is 10.1 percent per gram, thereby meeting the proliferation target requirement of embedded microorganisms. At this time, the removal rates of hydrogen sulfide and ammonia are over 93 percent, the removal rates of methyl mercaptan and non-methane total hydrocarbon are over 85 percent, and various indexes including odor concentration and the like meet the national current exhaust stack atmospheric pollutant emission limit.
Example 4
This example provides a method for preparing a biological deodorizing filler, which differs from example 2 in that:
in step S1:
the stirring treatment is carried out according to preset time intervals, the total stirring treatment time is 50min, and the stirring interval time is not more than 5min each time;
the solute of the complex substance aqueous solution comprises: 15kg of sodium hydrophosphate, 20kg of ammonium bicarbonate, 1kg of potassium chloride, 3kg of magnesium chloride and 2kg of manganese sulfate.
In step S2:
the solute of the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent comprises: 50kg of a mixture of polyvinyl alcohol and 10kg of sodium alginate and 40kg of a mixture of Bacillus subtilis, bacillus megaterium and Bacillus coagulans.
The filling height range of the biological deodorization filling material is 2.5m; the retention time of malodorous gas at the biological deodorizing filler is 30s;
the spraying amount of the spraying liquid is 0.5L water/m 3 Filling material, wherein the spraying interval is 24 hours;
after the biological drip filtration deodorization process is operated for two weeks, the total number of the bacterial colonies measured by sampling biological deodorization filler is 2.5X10 8 Seed/g and sporeThe bacterial colony number is 35.6%, which meets the proliferation target requirement of embedded microorganism. At this time, the removal rates of hydrogen sulfide and ammonia are over 95%, the removal rates of methyl mercaptan and non-methane total hydrocarbon are over 85%, and various indexes including odor concentration and the like meet the national current exhaust stack atmospheric pollutant emission limit.
Comparative example 1
According to the comparative example, volcanic rock with unmodified regulation and control load is used as biological deodorizing filler, and the rest conditions are unchanged.
After the biological drip filtration deodorization process is operated for two weeks, the total number of the bacterial colonies measured by extracting the filler sample is 0.2X10 8 The number of bacillus colonies is 2.3% per gram. At this time, the removal rates of hydrogen sulfide and ammonia are 83% and 77%, and the removal rates of methyl mercaptan and non-methane total hydrocarbons are 65% and 73%, respectively, and various indexes including odor concentration and the like cannot fully meet the national current exhaust stack atmospheric pollutant emission limits.
Comparative example 2
In the comparative example, bamboo charcoal is used as biological deodorizing filler, and the rest conditions are unchanged.
After the biological drip filtration deodorization process is operated for two weeks, the total number of the bacterial colonies measured by extracting the filler sample is 0.6X10 8 The number of bacillus colonies is 4.7% per gram. At this time, the hydrogen sulfide and ammonia removal rates are 93% and 87%, and the methyl mercaptan and non-methane total hydrocarbon removal rates are 71% and 76%, respectively, and various indexes including odor concentration and the like cannot fully meet the national current exhaust stack atmospheric pollutant emission limits.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (5)
1. The application of the biological deodorization filling in the biological drip deodorization technology is characterized in that,
the filling height range of the biological deodorization filling material is 1.5-2.5 m; the retention time of malodorous gas at the biological deodorizing filler is 15-30s;
when the biological deodorization filling material is used for the biological trickling filtration process, the spraying amount of the spraying liquid is in the range of 0.5-1L water/m 3 Filling material, wherein the spraying interval is 6-24h, and the spraying time is 0.5-2min each time; the operating temperature range of the biological deodorization filling is 15-30 ℃;
the preparation method of the biological deodorization filling comprises the following steps:
s1: uniformly spraying a composite substance aqueous solution on the surface of a natural porous ore material while stirring the natural porous ore material, and drying to obtain a composite material;
stirring is carried out at preset time intervals, the total stirring time is 20-60min, and the stirring time is not more than 5min;
based on the total weight of the natural porous ore material, the solute of the composite substance aqueous solution comprises 0.1-3% of phosphorus salt, 0.1-3% of nitrogen salt, 0.1-0.5% of potassium salt, 0.5-1% of magnesium salt and 0.1-0.3% of manganese salt;
s2: spraying the mixed solution of the embedded slow-release agent and the bacillus spore bacterial agent on the surface of the composite material while stirring the composite material, and drying to obtain the biological deodorizing filler;
stirring is carried out at preset time intervals, the total stirring time is 15-30min, and the stirring time is not more than 2min;
the solute of the mixed solution of the embedded slow release agent and the bacillus spore bacterial agent comprises 5-10% of the slow release embedding agent and 2-5% of the bacillus spore bacterial agent by the total weight of the natural porous ore material;
the slow-release embedding agent is a mixture of polyvinyl alcohol and sodium alginate;
the natural porous ore material is at least one of pumice, volcanic rock and zeolite, the particle size range of the natural porous ore material is 2-5cm, and the water content is less than 30%.
2. The use according to claim 1, wherein, in step S1,
the temperature of the drying treatment is 25-105 ℃; the water content of the composite material is lower than 60%.
3. The use according to claim 1, wherein,
the preparation method of the composite substance aqueous solution comprises the following steps: and respectively preparing the phosphorus salt, the nitrogen salt, the potassium salt, the magnesium salt and the manganese salt into aqueous solutions, and then mixing to obtain the composite substance aqueous solution.
4. The use according to claim 3, wherein,
the phosphorus salt is at least one of ammonium dihydrogen phosphate, sodium hydrogen phosphate and potassium dihydrogen phosphate; the concentration of the phosphate aqueous solution is not less than 80% of its saturated solubility;
the nitrogen salt is monoammonium phosphate and/or ammonium bicarbonate; the concentration of the nitrogen salt aqueous solution is not less than 80% of its saturated solubility;
the potassium salt is monopotassium phosphate and/or potassium chloride; the concentration of the potassium salt aqueous solution is not less than 80% of its saturated solubility;
the magnesium salt is magnesium chloride and/or magnesium sulfate; the concentration of the magnesium salt aqueous solution is not less than 80% of its saturated solubility;
the manganese salt is manganese chloride and/or manganese sulfate; the concentration of the manganese salt aqueous solution is not less than 80% of its saturation solubility.
5. The use according to claim 1, wherein, in step S2,
the mass ratio of the polyvinyl alcohol to the sodium alginate is 2-5:1; the polymerization degree of the polyvinyl alcohol is 17-22 ten thousand, and the alcoholysis degree is more than 99%;
the bacillus spore microbial inoculum is at least one of bacillus subtilis, bacillus megaterium, bacillus coagulans and bacillus atrophaeus;
the temperature of the drying treatment is 25-105 ℃; the water content of the biological deodorization filling is lower than 40%.
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