CN111871382A - Method for deodorizing wet garbage biogas residue fermentation product - Google Patents
Method for deodorizing wet garbage biogas residue fermentation product Download PDFInfo
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- CN111871382A CN111871382A CN202010728312.XA CN202010728312A CN111871382A CN 111871382 A CN111871382 A CN 111871382A CN 202010728312 A CN202010728312 A CN 202010728312A CN 111871382 A CN111871382 A CN 111871382A
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- wet garbage
- biogas residue
- bentonite
- garbage biogas
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000855 fermentation Methods 0.000 title claims abstract description 15
- 230000004151 fermentation Effects 0.000 title claims abstract description 15
- 230000001877 deodorizing effect Effects 0.000 title abstract description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 20
- KJPRLNWUNMBNBZ-QPJJXVBHSA-N (E)-cinnamaldehyde Chemical compound O=C\C=C\C1=CC=CC=C1 KJPRLNWUNMBNBZ-QPJJXVBHSA-N 0.000 claims abstract description 19
- 239000000440 bentonite Substances 0.000 claims abstract description 19
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 19
- 229940117916 cinnamic aldehyde Drugs 0.000 claims abstract description 18
- KJPRLNWUNMBNBZ-UHFFFAOYSA-N cinnamic aldehyde Natural products O=CC=CC1=CC=CC=C1 KJPRLNWUNMBNBZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- -1 aldehyde organic compound Chemical class 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004332 deodorization Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 14
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 239000003607 modifier Substances 0.000 claims description 9
- 241000894006 Bacteria Species 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 7
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000010000 carbonizing Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 4
- 238000011068 loading method Methods 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims 3
- 239000010802 sludge Substances 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 2
- 239000011707 mineral Substances 0.000 abstract 2
- 239000004278 EU approved seasoning Substances 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 abstract 1
- 235000015218 chewing gum Nutrition 0.000 abstract 1
- 229940112822 chewing gum Drugs 0.000 abstract 1
- 238000009264 composting Methods 0.000 abstract 1
- 235000009508 confectionery Nutrition 0.000 abstract 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 abstract 1
- 235000013305 food Nutrition 0.000 abstract 1
- 235000011194 food seasoning agent Nutrition 0.000 abstract 1
- 235000013372 meat Nutrition 0.000 abstract 1
- 229910052901 montmorillonite Inorganic materials 0.000 abstract 1
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- 230000009965 odorless effect Effects 0.000 abstract 1
- 150000002894 organic compounds Chemical class 0.000 abstract 1
- 235000013599 spices Nutrition 0.000 abstract 1
- 230000009967 tasteless effect Effects 0.000 abstract 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 4
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GRWFGVWFFZKLTI-UHFFFAOYSA-N α-pinene Chemical compound CC1=CCC2C(C)(C)C1C2 GRWFGVWFFZKLTI-UHFFFAOYSA-N 0.000 description 2
- WTARULDDTDQWMU-RKDXNWHRSA-N (+)-β-pinene Chemical compound C1[C@H]2C(C)(C)[C@@H]1CCC2=C WTARULDDTDQWMU-RKDXNWHRSA-N 0.000 description 1
- WTARULDDTDQWMU-IUCAKERBSA-N (-)-Nopinene Natural products C1[C@@H]2C(C)(C)[C@H]1CCC2=C WTARULDDTDQWMU-IUCAKERBSA-N 0.000 description 1
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- GRWFGVWFFZKLTI-IUCAKERBSA-N 1S,5S-(-)-alpha-Pinene Natural products CC1=CC[C@@H]2C(C)(C)[C@H]1C2 GRWFGVWFFZKLTI-IUCAKERBSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 241000194108 Bacillus licheniformis Species 0.000 description 1
- 241000194103 Bacillus pumilus Species 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000193385 Geobacillus stearothermophilus Species 0.000 description 1
- WTARULDDTDQWMU-UHFFFAOYSA-N Pseudopinene Natural products C1C2C(C)(C)C1CCC2=C WTARULDDTDQWMU-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- XCPQUQHBVVXMRQ-UHFFFAOYSA-N alpha-Fenchene Natural products C1CC2C(=C)CC1C2(C)C XCPQUQHBVVXMRQ-UHFFFAOYSA-N 0.000 description 1
- MVNCAPSFBDBCGF-UHFFFAOYSA-N alpha-pinene Natural products CC1=CCC23C1CC2C3(C)C MVNCAPSFBDBCGF-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229930006722 beta-pinene Natural products 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000005539 carbonized material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- LCWMKIHBLJLORW-UHFFFAOYSA-N gamma-carene Natural products C1CC(=C)CC2C(C)(C)C21 LCWMKIHBLJLORW-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229940087305 limonene Drugs 0.000 description 1
- 235000001510 limonene Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- CJUAZLFGEILRKP-UHFFFAOYSA-N methane;styrene Chemical compound C.C=CC1=CC=CC=C1 CJUAZLFGEILRKP-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000012436 odor-modifying agent Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
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- Dispersion Chemistry (AREA)
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a biogas residue deodorization method, in particular to a method for deodorizing fermentation products of wet garbage biogas residues. The invention aims to provide a method for deodorizing wet garbage biogas residue fermentation products. In order to solve the technical problems, the invention provides a method for deodorizing a wet garbage biogas residue fermentation product, which comprises cinnamaldehyde, bentonite and wet garbage biogas residue carbide. The cinnamaldehyde is an aldehyde organic compound, is yellow viscous liquid, is an allowable food synthetic spice specified in GB2076-2011, and can be used for preparing meat, seasonings, oral care products, chewing gum and candy essence. The bentonite is a non-metal mineral product with montmorillonite as a main mineral component, has strong adsorbability to gas, water and organic compounds, and is odorless, tasteless, nontoxic and environment-friendly. The wet garbage biogas residue carbide is a product obtained by high-temperature carbonization of wet garbage biogas residue after composting and has strong adsorption capacity.
Description
Technical Field
The invention relates to a method for deodorizing biogas residues, in particular to a method for improving the odor of wet garbage biogas residues.
Background
Malodorous gases are mainly sulfur-containing compounds (H)2S、SO2、SO3) Part of organic substances (alkanes, alkenes, alkynes, alcohols, aldehydes, ethers, esters, organic acids, phenols, aromatic hydrocarbons, etc.) and part of halogens (chlorine-containing compounds). The range of wet garbage is determined since the implementation of 'Shanghai City domestic garbage management regulation' on 7/1/2019, and the recovery amount of the recyclables in the whole city reaches 5600 tons/day. After the wet garbage is sorted to remove impurities such as plastic bags and the like, the wet garbage is sent into an anaerobic tank for fermentation to generate methane through the steps of crushing, cooking, extracting oil and the like, and each ton of the wet garbage can generate methane80 cubic meters, generates electricity by about 150 ℃ after combustion, and has a slag tapping rate of 30 percent. In order to better utilize the resource, the recycling of wet garbage biogas residues is developed.
The detection proves that the odor components in the wet garbage biogas residue mainly comprise ethanol, acetaldehyde, propionaldehyde, ethyl acetate, limonene, alpha-pinene, beta-pinene, methyl mercaptan and dimethyl disulfide. At present, low-temperature plasma deodorization equipment, a thermal combustion method, an adsorption method, a spraying method, a biological method and ultraviolet photolysis are mostly used for treating the odor in the market. Wherein, the low-temperature plasma has high investment at one time and secondary pollution. Thermal combustion process equipment is subject to corrosion, consumes fuel, and has high treatment cost. The biological method is immature and has no success.
The invention is technically characterized in that the characteristic of strong adsorbability after the wet garbage biogas residues are carbonized is utilized, the wet garbage biogas residues are utilized from the source, and the modified bentonite is utilized to change the physical and chemical properties of the wet garbage biogas residues and the effect of cinnamaldehyde neutralization odor to reduce the odor condition.
Disclosure of Invention
In view of the above, the invention provides a method for improving the odor of wet garbage biogas residues, which can effectively improve the odor condition of the wet garbage biogas residues.
The invention aims to provide a method for improving the odor of wet garbage biogas residues, which comprises the following steps: comprises cinnamyl aldehyde, bentonite and wet garbage biogas residue carbide. Cinnamaldehyde is permitted in GB2076-2011, has density of 1.046-1.052, melting point (deg.C) of-7.5 deg.C, refractive index (20 deg.C) of 1.619-1.623, acid value of 1.0% or less, boiling point (deg.C) of 253 (normal pressure), colorless or yellowish liquid, and bentonite density of 2-3g/cm3，Milk white powder.
The bentonite raw material is crushed, then the bentonite is added into an aluminum sulfate solution, the pH value is regulated to be neutral by stirring, and the bentonite modified by aluminum sulfate can be obtained by drying at the temperature of 500-600 ℃ after filtering and drying. The addition amount of the aluminum sulfate is 1-5 wt%.
The fermentation temperature of the wet garbage biogas residue carbide raw material is required to be 60-80 ℃, the stirring frequency is 10 minutes, the stirring is stopped for 40 minutes, the ventilation is uninterrupted, the fermentation strain is wet garbage aerobic thermophilic bacteria (the aerobic thermophilic bacteria specifically comprise bacillus subtilis A2, bacillus stearothermophilus M1, bacillus pumilus T6 and bacillus licheniformis N2), the fermentation time is 12-16 days, and the pH value is 5.5-7.0. The wet garbage biogas residue carbide is carbonized at the high temperature of 900-1200 ℃ for 6-10h under the condition of air isolation, and then oxidized and activated by air, carbon dioxide, water vapor or the mixed gas of the air, the carbon dioxide and the water vapor under the condition of 600-900 ℃.
The modifier also comprises a supported material, wherein the supported material comprises any one of titanium dioxide, silicon dioxide and zirconium dioxide supported by any one of MCM-41, TS-1, SBA-15 and HY molecular sieves. The load material is prepared by taking a molecular sieve as a template and adopting a sol-gel method.
The addition amount of the load type material is 0.05-0.1% of the total mass of the wet garbage biogas residue carbide; the loading amount of the titanium dioxide, the silicon dioxide or the zirconium dioxide is 0.5 to 2 percent.
Based on the odor improving material, the invention also provides a method for improving the odor of the wet garbage biogas residue by using the odor improving agent for the wet garbage biogas residue, which is characterized in that the cinnamaldehyde is prepared into a solution with the concentration of 500-2000ppm and is uniformly sprayed on the carbide of the wet garbage biogas residue; the temperature is controlled to be 50-60 ℃ by material enclosing, bentonite or aluminum sulfate modified bentonite is added and mixed evenly, and the effect of deodorization can be achieved.
Or mixing the cinnamaldehyde and the load-type material, and spraying the mixture on the wet garbage biogas residue carbide; the temperature is controlled to be 50-60 ℃ by material enclosing, bentonite or aluminum sulfate modified bentonite is added and mixed evenly, and the effect of deodorization can be achieved.
During the process of mixing and spraying the supported material and the cinnamaldehyde, 30-40% of the cinnamaldehyde is adsorbed in the supported material, the supported material forms small solid particles after being sprayed, gaps are formed in carbides of wet garbage biogas residues, and in the process of overflowing of wet garbage odor, the odor overlaps with the flavor of the cinnamaldehyde, so that more than 90% of the odor is reduced. During stacking, the odor does not disappear, but is immobilized in the carbonized material via the overlapping taste of cinnamaldehyde by the strong adsorption characteristics of the supported material. Thereby achieving the purpose of deodorization.
Detailed description of the preferred embodiments
Example 1
The wet garbage biogas residue odor modifier comprises cinnamaldehyde, bentonite and wet garbage biogas residue carbide, and the mass ratio of the raw materials is 0.001: 6: 15. the wet garbage biogas residue carbide is prepared by adding aerobic thermophilic bacteria into wet garbage raw materials at 60-80 ℃ under ventilation, fermenting for 12-16 days, carbonizing the fermentation product at 1000 ℃ for 8h, and oxidizing, activating and sintering in the air at 1000 ℃ for 3 h.
Example 2
The wet garbage biogas residue odor modifier comprises cinnamaldehyde, aluminum sulfate modified bentonite and wet garbage biogas residue carbide, and the mass ratio of the raw materials is 0.003: 7: 14. the wet garbage biogas residue carbide is prepared by adding aerobic thermophilic bacteria into wet garbage raw materials at 60-80 ℃ under ventilation, fermenting for 12-16 days, carbonizing the fermentation product at 1000 ℃ for 8h, and oxidizing, activating and sintering in the air at 1000 ℃ for 3 h. The aluminum sulfate modified bentonite is prepared by adding 2.5wt% of aluminum sulfate into crushed bentonite, adding an aluminum sulfate solution, stirring to adjust the pH value to be neutral, filtering, drying and drying at 500 ℃.
Example 3
The wet garbage biogas residue odor modifier comprises cinnamaldehyde, aluminum sulfate modified bentonite and wet garbage biogas residue carbide, and the mass ratio of the raw materials is 0.005: 10: 15. the wet garbage biogas residue carbide is prepared by adding aerobic thermophilic bacteria into a wet garbage raw material at 60-80 ℃ under ventilation, fermenting for 12-16 days, carbonizing the fermentation product at 1200 ℃ for 8h, and performing oxidation activation sintering in air and water vapor (wherein the addition amount of the water vapor only keeps 40% of the air humidity) at 900 ℃ for 3 h. The aluminum sulfate modified bentonite is prepared by adding 2.5wt% of aluminum sulfate into crushed bentonite, adding an aluminum sulfate solution, stirring to adjust the pH value to be neutral, filtering, drying and drying at 500 ℃.
Example 4
The wet garbage biogas residue odor modifier comprises cinnamaldehyde, SBA-15 loaded zirconium dioxide, aluminum sulfate modified bentonite and wet garbage biogas residue carbide, and the mass ratio of the raw materials is 0.005: 10: 15. the wet garbage biogas residue carbide is prepared by adding aerobic thermophilic bacteria into a wet garbage raw material at 60-80 ℃ under ventilation, fermenting for 12-16 days, carbonizing the fermentation product at 1200 ℃ for 8h, and performing oxidation activation sintering in air and water vapor (wherein the addition amount of the water vapor only keeps 40% of the air humidity) at 900 ℃ for 3 h. The aluminum sulfate modified bentonite is prepared by adding 2.5wt% of aluminum sulfate into crushed bentonite, adding an aluminum sulfate solution, stirring to adjust the pH value to be neutral, filtering, drying, and drying at 500 ℃ to obtain the aluminum sulfate modified bentonite, wherein the addition of SBA-15-loaded zirconium dioxide is 0.1% of the total mass of wet garbage biogas residue carbide, and the loading capacity of the zirconium dioxide is 2%.
Example 5
The wet garbage biogas residue odor modifier comprises cinnamaldehyde, MCM-41 loaded silica, aluminum sulfate modified bentonite and wet garbage biogas residue carbide, and the mass ratio of the raw materials is 0.005: 10: 15. the wet garbage biogas residue carbide is prepared by adding aerobic thermophilic bacteria into a wet garbage raw material at 60-80 ℃ under ventilation, fermenting for 12-16 days, carbonizing the fermentation product at 1200 ℃ for 8h, and performing oxidation activation sintering in air and water vapor (wherein the addition amount of the water vapor only keeps 40% of the air humidity) at 900 ℃ for 3 h. The aluminum sulfate modified bentonite is prepared by adding 2.5wt% of aluminum sulfate into crushed bentonite, adding an aluminum sulfate solution, stirring to adjust the pH value to be neutral, filtering, drying and drying at 500 ℃. The addition amount of MCM-41 loaded silicon dioxide is 0.08 percent of the total mass of wet garbage biogas residue carbide, and the loading amount of the silicon dioxide is 1.5 percent.
The modifier of the embodiment 1 to 5 is adopted to respectively carry out deodorization treatment on a certain refuse treatment plant of Shanghai Songjiang leaf elysees, a certain refuse treatment plant of Shanghai Songjiang creek and a certain refuse treatment plant of Shanghai Yanpu, and the effect is as follows:
TABLE 1 certain refuse treatment plant of Shanghai Songjiang leaf elysees
| Ppm of methane | Styrene ppm | Ammonia gas ppm | Methyl mercaptan ppm | Dimethylamine ppm | Propionaldehyde ppm | |
| Before treatment | 260-380 | 2-10 | 74-87 | 0.2-0.4 | 3-7 | 16-23 |
| Example 1 | 25-33 | Less than 1.5 | 5-10 | 0.05-0.1 | 0.05-0.1 | Less than 3 |
| Example 2 | 10-17 | Less than 1 | 5-10 | Less than 0.05 | Less than 0.05 | 1.2-2.5 |
| Example 3 | 5-15 | 0.2-0.5 | 3-8 | 0 | 0 | 0.8-1.0 |
| Example 4 | 0-10 | 0 | 0.6-4 | 0 | 0 | 0.1-0.5 |
| Example 5 | 0-8 | 0 | 0.4-2.5 | 0 | 0 | 0.1-0.5 |
As can be seen from the table, the odor modifying agents of examples 1 to 5 all achieved significant reduction in the odor of garbage, but examples 4 and 5 exhibited significant effects, and none of them were detected in the indexes related to styrene, methyl mercaptan, and dimethylamine, and showed excellent effects.
Claims (8)
1. The wet garbage biogas residue odor modifier is characterized by comprising cinnamaldehyde, bentonite and wet garbage biogas residue carbide, wherein the mass ratio of the raw materials is 0.001-0.005: 5-10: 12-18.
2. The odor improver for wet garbage biogas residues as defined in claim 1, wherein the carbide of wet garbage biogas residues is obtained by adding aerobic thermophilic bacteria to a raw material of wet garbage under ventilation at 60-80 ℃, fermenting for 12-16 days, carbonizing the fermentation product at 1000-1200 ℃ for 6-10h, and then performing oxidation activation sintering with air, water vapor or a mixture of the two at 900-1200 ℃ for 2-3 h.
3. The wet garbage biogas residue odor modifier as defined in claim 2, wherein the bentonite is aluminum sulfate modified bentonite, which is prepared by crushing bentonite, adding aluminum sulfate solution, stirring to adjust pH to neutrality, filtering, drying, and drying at 600 ℃ to obtain aluminum sulfate modified bentonite.
4. The wet garbage biogas residue odor improver as claimed in claim 3, wherein the aluminum sulfate is added in an amount of 1-5 wt%.
5. The wet waste biogas residue odor improver according to claim 4, wherein the improver further comprises a supported material, and the supported material comprises a supported material obtained from any one of titanium dioxide, silicon dioxide and zirconium dioxide supported by any one of MCM-41, TS-1, SBA-15 and HY molecular sieves.
6. The wet waste biogas residue odor improver according to claim 5, wherein the addition amount of the load-type material is 0.05-0.1% of the total mass of the wet waste biogas residue carbide; the loading amount of the titanium dioxide, the silicon dioxide or the zirconium dioxide is 0.5 to 2 percent.
7. The method for improving the odor of the wet garbage biogas residue by adopting the wet garbage biogas residue odor improver as defined in any one of claims 1 to 6, is characterized in that the cinnamaldehyde is prepared into a solution of 500-2000ppm and uniformly sprayed on the carbide of the wet garbage biogas residue; the temperature is controlled to be 50-60 ℃ by material enclosing, bentonite or aluminum sulfate modified bentonite is added and mixed evenly, and the effect of deodorization can be achieved.
8. The improved process of claim 7, wherein cinnamaldehyde is mixed with a support material and sprayed onto the wet landfill sludge carbide; the temperature is controlled to be 50-60 ℃ by material enclosing, bentonite or aluminum sulfate modified bentonite is added and mixed evenly, and the effect of deodorization can be achieved.
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