CN112624329A - Sewage deep denitrification filler taking sulfur autotrophic denitrification as core and treatment method - Google Patents
Sewage deep denitrification filler taking sulfur autotrophic denitrification as core and treatment method Download PDFInfo
- Publication number
- CN112624329A CN112624329A CN202011588799.2A CN202011588799A CN112624329A CN 112624329 A CN112624329 A CN 112624329A CN 202011588799 A CN202011588799 A CN 202011588799A CN 112624329 A CN112624329 A CN 112624329A
- Authority
- CN
- China
- Prior art keywords
- sulfur
- meshes
- powder
- sulfur autotrophic
- autotrophic bacteria
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 114
- 239000011593 sulfur Substances 0.000 title claims abstract description 114
- 230000001651 autotrophic effect Effects 0.000 title claims abstract description 102
- 239000010865 sewage Substances 0.000 title claims abstract description 51
- 239000000945 filler Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 45
- 241000894006 Bacteria Species 0.000 claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 50
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000010457 zeolite Substances 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 45
- 235000016709 nutrition Nutrition 0.000 claims abstract description 39
- 238000007667 floating Methods 0.000 claims abstract description 36
- 238000011049 filling Methods 0.000 claims abstract description 34
- 230000035764 nutrition Effects 0.000 claims abstract description 34
- 229920005862 polyol Polymers 0.000 claims abstract description 34
- 150000003077 polyols Chemical class 0.000 claims abstract description 34
- 229920002635 polyurethane Polymers 0.000 claims abstract description 26
- 239000004814 polyurethane Substances 0.000 claims abstract description 26
- 238000005187 foaming Methods 0.000 claims abstract description 21
- -1 isocyanate compound Chemical class 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 238000007873 sieving Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000004743 Polypropylene Substances 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 229920001155 polypropylene Polymers 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 239000004088 foaming agent Substances 0.000 claims abstract description 6
- 239000008239 natural water Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 24
- 229920000570 polyether Polymers 0.000 claims description 24
- 235000015097 nutrients Nutrition 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- 229920001296 polysiloxane Polymers 0.000 claims description 14
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 10
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 229920005906 polyester polyol Polymers 0.000 claims description 6
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 3
- FEUISMYEFPANSS-UHFFFAOYSA-N 2-methylcyclohexan-1-amine Chemical compound CC1CCCCC1N FEUISMYEFPANSS-UHFFFAOYSA-N 0.000 claims description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 2
- 125000005442 diisocyanate group Chemical group 0.000 claims description 2
- 230000000050 nutritive effect Effects 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 2
- 150000001412 amines Chemical class 0.000 claims 1
- 150000003961 organosilicon compounds Chemical class 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052799 carbon Inorganic materials 0.000 abstract description 12
- 238000002360 preparation method Methods 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 32
- 229910052757 nitrogen Inorganic materials 0.000 description 16
- 229910002651 NO3 Inorganic materials 0.000 description 13
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 235000019738 Limestone Nutrition 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002354 daily effect Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 241000108664 Nitrobacteria Species 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 241000195628 Chlorophyta Species 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 241000192710 Microcystis aeruginosa Species 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000014233 sulfur utilization Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Botany (AREA)
- Biotechnology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a sewage deep denitrification filler taking sulfur autotrophic denitrification as a core and a treatment method, wherein the preparation method of the sulfur autotrophic bacteria nutrition filler comprises the following steps of S1: heating the polyol and the isocyanate compound; step S2: sieving sulfur powder and zeolite powder; step S3: mixing polyol, catalyst, surfactant and foaming agent; step S4: adding isocyanate compounds and mixing; step S5: adding sulfur powder and zeolite powder, and foaming; step S6: demolding to obtain the sulfur-loaded reticular polyurethane; step S7: cutting the reticular polyurethane loaded with the sulfur simple substance into square particles; step S8: and (3) filling the polyurethane square particles into the polypropylene hollow fishing net-shaped sphere to obtain the sulfur autotrophic bacteria nutrition filler. Digging an artificial pond or utilizing a natural water body, arranging a floating ecological floating island in the water body, or utilizing an ecological filter tank, and filling sulfur autotrophic bacteria nutrition fillers in the filter tank to culture and enrich sulfur autotrophic denitrifying bacteria, thereby realizing deep denitrification under the condition of insufficient carbon source of sewage.
Description
Technical Field
The invention relates to the field of sewage treatment and water body remediation, in particular to a sewage deep denitrification filler taking sulfur autotrophic denitrification as a core and a treatment method.
Background
The distributed sewage is the waste water produced by residents in the living quarters in the daily life and the activities for providing services for the daily life, and is the sum of the waste water produced in the small-sized processing industry, the service industry and the household daily life. The dispersed sewage is mainly characterized by small discharge amount, dispersed and intermittent discharge, high nitrogen and phosphorus concentration and large amount of nutritive salt, bacteria, virus and the like.
The removal of nutrient salt nitrogen is the main target and technical difficulty of the dispersed sewage treatment, the current mode applied to the dispersed sewage nitrogen treatment mainly is a denitrification process based on three reactions of ammoniation, nitrification and denitrification, and the method uses the nitrification process to remove NH4 +Oxidation of-N to NO3 -N, and then the NO in the water is treated by heterotrophic denitrification by taking organic matters as a carbon source and an electron donor3 -Reduction of-N to N2. In the heterotrophic denitrification reaction, the concentration of organic carbon source is the main factor limiting the reaction. In order to buffer water quantity and water quality, the distributed sewage treatment is generally long in storage and retention time, so that the phenomena of low carbon-nitrogen ratio and insufficient carbon source of sewage generally exist, the carbon source in the sewage is difficult to meet the denitrification requirement of heterotrophic denitrifying bacteria, and NH in water is caused4 +the-N removal rate is higher, but the TN removal rate is lower. NH in water4 +N is converted to NO by nitration3 -N directly accumulates in the water body to form large pollution. In addition, because biological nitrogen and phosphorus removal is performed by two completely different types of bacteria, biochemical processes are completely different, requirements of the two completely different types of bacteria on environmental factors are different, and the problems of carbon source contradiction, sludge age contradiction and nitrate influence commonly exist in the traditional process, so that the efficiency of synchronously improving the nitrogen and phosphorus removal is difficult to coordinate. Increasingly stringent sewage discharge standards and regulations put higher demands on distributed sewage treatment. Therefore, the temperature of the molten metal is controlled,when sewage with low carbon-nitrogen ratio is treated, a new technology which can solve the problem of insufficient carbon source and can improve the nitrogen and phosphorus removal efficiency needs to be searched.
In recent years, autotrophic denitrification, particularly sulfur autotrophic denitrification, has attracted much attention, and the autotrophic denitrification is realized by using low-valence sulfur as an electron donor instead of a carbon source and using nitrate or nitrite in water as an electron acceptor under the action of autotrophic denitrifying bacteria. The sulfur autotrophic denitrification technology has the advantages that (1) inorganic ions are used as electron donors, so that the cost is saved; (2) no organic carbon substrate is added, so that secondary pollution is avoided; (3) low sludge yield of sulfur autotrophic denitrifying bacteria and the like. The patent autotrophic denitrification artificial pond, the construction method and the method for denitrifying sewage by utilizing the artificial pond CN111717995A disclose a method for deeply denitrifying sewage by utilizing the artificial pond, which mainly utilizes the excavation of the artificial pond and the laying of fillers such as sulfur, limestone, zeolite, volcanic rock and the like at the bottom of the pond, introduces the sewage to be treated into the artificial pond, and utilizes sulfur as an electron donor for sulfur autotrophic denitrifying bacteria to enrich and form a biofilm at the bottom of the pond, thereby realizing the removal of total nitrogen introduced into the sewage. However, the method has the following defects when being directly applied to the total nitrogen treatment of the sewage: (1) the amount of sulfur added to the bottom of the artificial pond can not be accurately controlled during the culture and enrichment of sulfur autotrophic denitrifying bacteria, so that the sulfur which is not utilized by the sulfur autotrophic denitrifying bacteria is subjected to anaerobic fermentation in the bottom sediment of the pond to generate hydrogen sulfide gas which is inflammable, has odor of eggs and is highly toxic to human bodies; (2) the sulfur is insoluble in water, the sulfur autotrophic denitrogenation bacteria can only obtain nutrients at the bottom of the artificial pond, and the dissolved oxygen concentration at the bottom of the artificial pond is usually lower, so that the sulfur autotrophic denitrogenation bacteria are not beneficial to growth; (3) the sulfur is easy to run off along with the sludge, the utilization rate is not high, and the sulfur needs to be added and supplemented continuously; (4) the fillers such as natural zeolite, limestone and the like have high framework density, low porosity, small specific surface area and the like, limit the attachment and growth of sulfur autotrophic denitrifying bacteria and have poor adaptability to hydraulic load.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a sewage deep denitrification filler taking sulfur autotrophic denitrification as a core and a treatment method.
The sulfur autotrophic bacteria nutrition filler is prepared by mixing the following raw material components in parts by weight: 90-110 parts of polyol, 0.1-2 parts of catalyst, 0.5-2 parts of surfactant, 40-70 parts of isocyanate compound, 1-30 parts of sulfur powder, 1-15 parts of zeolite powder and 3-8 parts of foaming agent.
The polyol is selected from one or more of polyether polyol, polyester polyol and bio-based polyol with the molecular weight of 5000-20000.
The polyether polyol is selected from one or more of amine-terminated polyether polyol, dihydroxy polyether polyol and trihydroxy polyether polyol; the polyester polyol is selected from sulfonate modified polyester polyols.
The catalyst is selected from one or more of triethanolamine, triethylene diamine, 2-methylcyclohexylamine, dibutyltin dilaurate and stannous octoate.
The surfactant is selected from one or more of high-efficiency silicone glycol copolymer, silicone stabilizer, silicone polyether copolymer and organic silicon compound.
The isocyanate compound is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate and hexamethyl diisocyanate.
The sulfur powder needs to be sieved before use to select the sulfur powder with the granularity of 100-200 meshes.
The zeolite powder needs to be sieved before use to select the zeolite powder with the particle size of 180-200 meshes.
The foaming agent is selected from deionized water or dichloromethane.
Preferably, 0.5-4 parts of silicone oil can be added as a stabilizer.
A preparation method of a sulfur autotrophic bacteria nutrition filler comprises the following steps:
step S1: heating the polyol and the isocyanate compound at 35 ℃ for 1-2 hours.
Step S2: the sulfur powder is mechanically sieved for 200 meshes for the first time, the sulfur powder with the granularity of less than 200 meshes is selected, and the selected sulfur powder is mechanically sieved for 100 meshes for the second time, and the sulfur powder with the granularity of 100 meshes and 200 meshes is selected.
Step S3: mixing the polyol, the catalyst, the surfactant and the foaming agent in parts by weight, and controlling the stirring time to be 20-60 seconds.
Step S4: adding the isocyanate compound into the mixture of S3, and continuously stirring and mixing, wherein the stirring time is controlled to be 20-60 seconds.
Step S5: pouring the mixture of S4 into a low-pressure foaming machine, adding the sulfur powder with the granularity of 100-200 meshes and the zeolite powder with the granularity of 180-200 meshes selected in the step S2, uniformly stirring, and foaming. The foaming temperature is controlled at 20-30 ℃.
Step S6: standing for 30-50min after foaming, and demolding to obtain the reticular polyurethane loaded with the elemental sulfur and the zeolite powder.
Step S7: and (4) cutting the reticular polyurethane loaded with the sulfur simple substance obtained in the step (S6) into square particles, controlling the side length of the square particles to be 20-50 mm, and purging the polyurethane square particle micro-channels.
Step S8: and (4) filling the polyurethane square particles obtained in the step (S7) into a polypropylene hollow fishing net-shaped sphere to obtain the sulfur autotrophic bacteria nutrition filler.
The sulfur autotrophic bacteria nutrition filler prepared by the method can be used in the fields of sewage treatment or water body restoration.
In the field of sewage treatment, the sulfur autotrophic bacteria nutrient filler prepared by the method can be used for, but is not limited to be used for distributed sewage treatment, and the use mode of the sulfur autotrophic bacteria nutrient filler can be flexibly determined by combining the site conditions of distributed sewage stations. The using mode can be selected but not limited to digging an artificial pond in a sewage area to be treated or utilizing natural water, arranging a floating ecological floating island in the water, planting aquatic plants on the upper part of the floating island, and hanging the sulfur autotrophic bacteria nutrition filler prepared by the method on the lower part of the floating island; or the ecological filter tank is utilized to fill the sulfur autotrophic bacteria nutrition filling prepared by the method into the filter tank. The method is used for culturing and enriching the sulfur autotrophic denitrifying bacteria, and the distributed sewage deep denitrification treatment is realized by taking low-valence-state sulfur as an electron donor instead of a carbon source and taking nitrate or nitrite in water as an electron acceptor.
In the field of water body restoration, the sulfur autotrophic bacteria nutrient filling prepared by the method can be used for but not limited to water bloom and red tide in reservoirs, rivers, natural lakes and underground water and water source treatment restoration polluted by pollutants, and the usage mode of the sulfur autotrophic bacteria nutrient filling can be selected but not limited to be used as artificial wetland, ecological filter bed and artificial floating island filling. The method is used for culturing and enriching the sulfur autotrophic denitrifying bacteria, low-valence-state sulfur replaces a carbon source to be used as an electron donor, nitrate or nitrite in water is used as an electron acceptor, the denitrification of the water body can be realized, green algae, red tide and water eutrophication are prevented, and the water quality and the inhabiting environment of aquatic organisms are improved.
Advantageous effects
Compared with the prior art, the method for deeply denitrifying rural sewage mainly by using the sulfur autotrophic bacteria nutrient filler has obvious advantages and beneficial effects, and particularly, the technical scheme includes that: the sulfur autotrophic bacteria nutrition filler prepared by the method has a strong specific surface area and a pore volume adsorption structure, can load sulfur autotrophic denitrifying bacteria, is obligate autotrophic denitrifying bacteria, has the property of removing nitrate nitrogen, and further degrades the total nitrogen in the polluted water body. The method provided by the invention does not need to provide an energy source required by sulfur autotrophic denitrifying bacteria, does not generate microorganisms except the sulfur autotrophic denitrifying bacteria, and does not cause related problems, and uses inorganic substances such as sulfur powder, zeolite powder and the like, so the method has smaller burden on the environment than a method using organic substances.
The sulfur autotrophic bacteria nutrition filling material prepared by the method is used for replacing the traditional mode of adding sulfur powder or sulfur granules to culture and enrich sulfur autotrophic denitrifying bacteria, and has the following advantages:
(1) low cost, high sulfur utilization rate, less hydrogen sulfide gas generation and basically no odor.
(2) The sulfur autotrophic denitrifying bacteria can be fixedly grown on the nutrient filling material, so that the number of microbial floras can be increased, and the microbial activity and the nitrate nitrogen removal efficiency can be improved. After the microbial cells are immobilized, the cell density is high, the reaction speed is high, the biological stability is good, the environmental tolerance is good, and the processing capacity and speed can be greatly improved.
(3) Compared with natural zeolite, limestone and other fillers, the polyurethane foam has the advantages of low cost, light weight, large specific surface area, strong adsorption capacity, aging resistance, good mass transfer performance and the like.
(4) The zeolite powder is added into the sulfur autotrophic bacteria nutrient filling material provided by the invention, so that the alkalinity of a water body can be improved, hydrogen ions generated by reducing nitrate by sulfur autotrophic denitrifying bacteria are neutralized, and the problem that the pH of effluent is greatly reduced by reducing nitrate by sulfur autotrophic denitrifying bacteria is solved; in addition, the zeolite powder also has the functions of purifying water quality and increasing dissolved oxygen, and has certain ammonia nitrogen adsorption function.
(5) The sulfur autotrophic bacteria nutrition filler is convenient to use, and can be combined with the site situation of rural sewage stations to flexibly determine the use mode. The using mode can be selected but not limited to digging an artificial pond in a sewage area to be treated or utilizing natural water, arranging a floating ecological floating island in the water, planting aquatic plants on the upper part of the floating island, and hanging the sulfur autotrophic bacteria nutrition filler prepared by the method on the lower part of the floating island; or the ecological filter tank is utilized to fill the sulfur autotrophic bacteria nutrition filling prepared by the method into the filter tank.
(6) The sulfur autotrophic bacteria nutrition filler has wide application range, can be used for deep denitrification of dispersed sewage stations, can also be used in the field of water body restoration, and is used for treating and restoring water bloom, red tide and water sources polluted by pollutants in reservoirs, rivers, natural lakes and underground water. Can realize denitrification of water, prevent green algae, red tide and water eutrophication, and improve water quality and the inhabitation environment of aquatic organisms.
Detailed Description
The following examples are provided to further illustrate the present invention, and are not to be construed as limiting the invention to the preferred embodiments and the scope of the invention.
The embodiment provides a sulfur autotrophic bacteria nutrition filler, which is prepared by the following steps:
the raw materials were prepared according to the weights indicated in the table below. Heating dihydroxy polyether polyol and toluene diisocyanate at 35 deg.C for 1 hr. Mechanically sieving sulfur powder with 200 mesh sieve to obtain sulfur powder with granularity less than 200 mesh, and sievingThe sulfur powder is sieved by a second mechanical sieve of 100 meshes, and the sulfur powder with the granularity of 100 meshes and 200 meshes is selected. The zeolite powder is mechanically sieved for 200 meshes for the first time, the zeolite powder with the granularity of less than 200 meshes is selected, the selected zeolite powder is mechanically sieved for 180 meshes for the second time, and the zeolite powder with the granularity of 180 meshes and 200 meshes is selected. Stirring dihydroxy polyether polyol, triethanolamine, high-efficiency silicone glycol copolymer and deionized water for 30s, adding toluene diisocyanate after uniformly mixing, continuously stirring for 30s, pouring the mixture into a low-pressure foaming machine, adding sulfur powder with the granularity of 100-200 meshes and zeolite powder with the granularity of 180-200 meshes, uniformly stirring, and foaming at 20 ℃. Standing for 30min after foaming, and demolding to obtain the reticular polyurethane loaded with the elemental sulfur and the zeolite powder. Cutting the reticular polyurethane loaded with the elemental sulfur into square particles of 20 x 20mm, and purging the polyurethane square particle microchannels. Filling the polyurethane square granules after purging
The polypropylene hollow fishing net-shaped sphere is used for obtaining the sulfur autotrophic bacteria nutrition filling.
Table 1 examples materials table
| Raw materials | Weight (g) |
| Dihydroxy polyether polyols | 100 |
| Toluene diisocyanate | 60 |
| Sulfur powder | 15 |
| Zeolite powder | 15 |
| Triethanolamine | 2 |
| High efficiency silicone ethylene glycol copolymers | 2 |
| Deionized water | 8 |
The deep denitrification filler for sewage with sulfur autotrophic denitrification as a core and the method are characterized in that the sulfur autotrophic denitrification nutritional filler obtained by the method is arranged below an ecological floating island, and the area ratio of the ecological floating island to a discharged water body is 10-40: 100. the ecological floating island consists of a floating bed bracket, a floating bed support plate arranged on the floating bed bracket and a floating bed box body fixed below the floating bed support plate, the sulfur autotrophic denitrification nutrition filler is arranged in the floating bed box body, and the stacking density is 35kg/m3. The ecological floating island floating bed support plate is fixed with a suitable water planting plant.
And (3) discharging the rural sewage with the ammonia nitrogen reaching the standard but the total nitrogen removal rate not reaching the standard to a natural water body or an artificial ecological pond, enriching the sulfur autotrophic denitrifying bacteria in the sewage rich in nitrate nitrogen by using the sulfur autotrophic denitrification nutritional filler, and completing the enrichment of the sulfur autotrophic denitrifying bacteria after 15-20 days, wherein the total nitrogen removal rate is more than 75%. The sulfur autotrophic denitrification nutrient filler prepared by the method is enriched with sulfur autotrophic denitrifying bacteria, and the denitrification reaction formula under the optimal condition is as follows:
NO3 -+1.1S+0.4CO2+0.76H2O+0.08NH4 +→0.50N2+1.1SO4 2-+1.28H++0.08C5H7O2N
the sulfur autotrophic denitrification nutrient filler obtained by the method has a strong specific surface area and a pore volume adsorption structure, can load sulfur autotrophic denitrifying bacteria, is obligate autotrophic denitrifying bacteria, has the property of removing nitrate nitrogen, and further degrades the total nitrogen in the polluted water body. The method is used for the advanced denitrification of rural sewage, does not need to provide an energy source required by sulfur autotrophic denitrifying bacteria additionally, and basically does not generate sludge. The sulfur autotrophic denitrifying bacteria enriched on the nutrient filling material have the advantages of high cell density, high reaction speed, good biological stability and good environmental tolerance. Compared with natural zeolite, limestone and other fillers, the polyurethane foam serving as the nutritional filler has the advantages of low cost, light weight, large specific surface area, strong adsorption capacity, ageing-resistant inert materials, good mass transfer performance and the like. The zeolite powder is added into the sulfur autotrophic denitrification nutrition filling material obtained by the method, so that the alkalinity of a water body can be improved, hydrogen ions generated by reducing nitrate by sulfur autotrophic denitrifying bacteria are neutralized, and the problem that the pH value of effluent is greatly reduced by reducing nitrate by sulfur autotrophic denitrifying bacteria is solved.
Example 1
Taking a certain village sewage treatment station in Jiangsu as an example for deep denitrification treatment, wherein the treatment scale of the station is 30t/d, the village sewage is treated by adopting integrated sewage treatment equipment which takes heterotrophic denitrification as a main denitrification process, and the water quality of the station effluent is shown in Table 2. As the carbon-nitrogen ratio of the sewage does not meet the requirement of the nutrition proportion of heterotrophic denitrifying bacteria, the ammonia nitrogen effluent of the station reaches the standard but the total nitrogen content of the effluent is higher.
TABLE 2 Water quality meter for effluent of certain village sewage treatment station
| COD(mg/L) | NO3 --N(mg/L) | NH4 +(mg/L) | TN(mg/L) | pH | |
| Station water outlet | 25 | 18 | 8 | 30 | 7.5 |
1. Preparation of sulfur autotrophic denitrification nutrition filling material
100g of dihydroxy polyether polyol, 60g of toluene diisocyanate, 30g of sulfur powder, 15g of zeolite powder, 2g of triethanolamine and 2g of high-efficiency silicone glycol copolymer raw materials are prepared. Heating dihydroxy polyether polyol and toluene diisocyanate at 35 deg.C for 1 hr. And mechanically sieving the sulfur powder for 200 meshes for the first time to select the sulfur powder with the granularity of less than 200 meshes, and mechanically sieving the selected sulfur powder for 100 meshes for the second time to select the sulfur powder with the granularity of 100 meshes and 200 meshes. The zeolite powder is mechanically sieved for 200 meshes for the first time, the zeolite powder with the granularity of less than 200 meshes is selected, the selected zeolite powder is mechanically sieved for 180 meshes for the second time, and the zeolite powder with the granularity of 180 meshes and 200 meshes is selected. Stirring dihydroxy polyether polyol, triethanolamine, high-efficiency silicone glycol copolymer and deionized water for 30s, adding toluene diisocyanate after uniformly mixing, continuously stirring for 30s, pouring the mixture into a low-pressure foaming machine, adding sulfur powder with the granularity of 100-200 meshes and zeolite powder with the granularity of 180-200 meshes, uniformly stirring, and foaming at 20 ℃. Standing for 30min after foaming, and demolding to obtain the reticular polyurethane loaded with the elemental sulfur and the zeolite powder. Cutting the sulfur-loaded reticulated polyurethane into 20 × 20mm square pellets, and purgingPolyurethane square granular microchannels. Filling the polyurethane square granules after purging
The polypropylene hollow fishing net-shaped sphere is used for obtaining the sulfur autotrophic bacteria nutrition filling.
2. Enrichment of sulfur autotrophic denitrifying bacteria
And (2) excavating an artificial pond beside the sewage treatment station, wherein the size of the artificial pond is 5m x 4m x 1.1m, 2 x 2 artificial floating islands are installed in the artificial pond, and the sulfur autotrophic denitrification nutritional filler prepared by the method is filled in a floating bed box body below the artificial floating islands. The effluent of the integrated sewage treatment equipment is introduced into an artificial pond through a guide pipe, the sewage rich in nitrate nitrogen is enriched in sulfur autotrophic denitrifying bacteria through sulfur autotrophic denitrification nutritional fillers, the temperature is controlled to be 25 ℃ in the enrichment process, the retention time is controlled to be 12-24 h, the enrichment of the sulfur autotrophic denitrifying bacteria is completed after 20d, the total nitrogen of the effluent of the artificial pond continuously and stably reaches the discharge standard, and the pH of the effluent is about 6.8.
Example 2
Taking a certain village sewage treatment site in Jiangsu as an example for deep denitrification treatment, wherein the treatment scale of the site is 50t/d, the village sewage is treated by adopting an integrated sewage treatment device and an ecological filter tank process which take heterotrophic denitrification as a main denitrification process, and the quality of the effluent of the site is shown in Table 3.
TABLE 3 Water quality table of effluent from certain village sewage treatment station
| COD(mg/L) | NO3 --N(mg/L) | NH4 +(mg/L) | TN(mg/L) | pH | |
| Station water outlet | 30 | 25 | 8 | 38 | 7.5 |
1. Preparation of sulfur autotrophic denitrification nutrition filling material
100g of dihydroxy polyether polyol, 60g of toluene diisocyanate, 30g of sulfur powder, 15g of zeolite powder, 2g of triethanolamine and 2g of high-efficiency silicone glycol copolymer raw materials are prepared. Heating dihydroxy polyether polyol and toluene diisocyanate at 35 deg.C for 1 hr. And mechanically sieving the sulfur powder for 200 meshes for the first time to select the sulfur powder with the granularity of less than 200 meshes, and mechanically sieving the selected sulfur powder for 100 meshes for the second time to select the sulfur powder with the granularity of 100 meshes and 200 meshes. The zeolite powder is mechanically sieved for 200 meshes for the first time, the zeolite powder with the granularity of less than 200 meshes is selected, the selected zeolite powder is mechanically sieved for 180 meshes for the second time, and the zeolite powder with the granularity of 180 meshes and 200 meshes is selected. Stirring dihydroxy polyether polyol, triethanolamine, high-efficiency silicone glycol copolymer and deionized water for 30s, adding toluene diisocyanate after uniformly mixing, continuously stirring for 30s, pouring the mixture into a low-pressure foaming machine, adding sulfur powder with the granularity of 100-200 meshes and zeolite powder with the granularity of 180-200 meshes, uniformly stirring, and foaming at 20 ℃. Standing for 30min after foaming, and demolding to obtain the reticular polyurethane loaded with the elemental sulfur and the zeolite powder. Cutting the reticular polyurethane loaded with the elemental sulfur into square particles of 20 x 20mm, and purging the polyurethane square particle microchannels. Filling the polyurethane square granules after purging
The polypropylene hollow fishing net-shaped sphere is used for obtaining the sulfur autotrophic bacteria nutrition filling.
2. Enrichment of sulfur autotrophic denitrifying bacteria
The zeolite filler of the existing ecological filter is replaced, the sulfur autotrophic bacteria nutrition filler prepared by the method is filled in the ecological filter, and a protective net is additionally arranged above the ecological filter to prevent the nutrition filler from floating upwards. And (3) the effluent of the integrated equipment rich in nitrate nitrogen enters the ecological filter tank, the water level reaches the normal water level of the ecological filter tank, the retention time is controlled to be 12-24 hours, and the temperature is controlled to be about 25 ℃. Observing the film forming condition of the sulfur autotrophic denitrification nutrition filler every day, arranging indication fillers at different positions of the ecological filter tank, taking the indication fillers out of the filter tank when observation is needed, and putting the indication fillers back into the filter tank after the observation is finished. If the filler grows out of an orange yellow or orange black film, the enrichment of the existing sulfur autotrophic denitrifying bacteria is shown, and the process generally needs 15-20 days. When the effluent quality meets the requirement, the biomembrane is normal in nature, which indicates that the enrichment is finished. The wastewater load is gradually increased, after a period of operation, when the designed water quantity is reached, the characteristics of the biological membrane in the nutrient filler are good, the daily treatment quantity and the effluent quality both reach the design requirements, the system enters a stable operation stage, and the construction of the deep denitrification ecological filter tank is completed. The total nitrogen of the effluent of the ecological filter tank continuously and stably reaches the discharge standard, and the pH of the effluent is about 6.9.
Example 3
Taking a lake as an example, deep denitrification treatment is carried out. The effluent of a certain urban sewage treatment plant is directly discharged to the lake, and is a main pollution source of the lake. The average value of COD at the sampling point of the lake area is 34mg/L, the average value of ammonia nitrogen is 17mg/L, and the average value of total phosphorus is 1.4 mg/L. The water quality of the lake region exceeds the poor V-class water quality standard, nitrogen and phosphorus are main pollution sources, and the water eutrophication condition is serious.
1. Preparation of sulfur autotrophic denitrification nutrition filling material
100g of dihydroxy polyether polyol, 60g of toluene diisocyanate, 30g of sulfur powder, 15g of zeolite powder, 2g of triethanolamine and 2g of high-efficiency silicone glycol copolymer raw materials are prepared. Heating dihydroxy polyether polyol and toluene diisocynate at 35 DEG CCyanate ester, heating time 1 hour. And mechanically sieving the sulfur powder for 200 meshes for the first time to select the sulfur powder with the granularity of less than 200 meshes, and mechanically sieving the selected sulfur powder for 100 meshes for the second time to select the sulfur powder with the granularity of 100 meshes and 200 meshes. The zeolite powder is mechanically sieved for 200 meshes for the first time, the zeolite powder with the granularity of less than 200 meshes is selected, the selected zeolite powder is mechanically sieved for 180 meshes for the second time, and the zeolite powder with the granularity of 180 meshes and 200 meshes is selected. Stirring dihydroxy polyether polyol, triethanolamine, high-efficiency silicone glycol copolymer and deionized water for 30s, adding toluene diisocyanate after uniformly mixing, continuously stirring for 30s, pouring the mixture into a low-pressure foaming machine, adding sulfur powder with the granularity of 100-200 meshes and zeolite powder with the granularity of 180-200 meshes, uniformly stirring, and foaming at 20 ℃. Standing for 30min after foaming, and demolding to obtain the reticular polyurethane loaded with the elemental sulfur and the zeolite powder. Cutting the reticular polyurethane loaded with the elemental sulfur into square particles of 20 x 20mm, and purging the polyurethane square particle microchannels. Filling the polyurethane square granules after purging
The polypropylene hollow fishing net-shaped sphere is used for obtaining the sulfur autotrophic bacteria nutrition filling.
2. Enrichment of sulfur autotrophic denitrifying bacteria
2 areas of 36m are distributed in a quadrangular lake water body restoration test area2Ecological floating islands are respectively placed on two sides of the lake surface, landscape plants are introduced on the floating islands, mesh devices are hung 20-30 cm below the floating islands, 3kg of sulfur autotrophic denitrification nutrition filling material is placed in the mesh devices below one of the floating islands, and the filling material loaded with nitrobacteria is hung below the other floating island. The fillers below the two floating islands can fully contact the water body, the fillers loaded with nitrobacteria can fully diffuse the nitrobacteria to the water body to oxidize ammonia nitrogen into nitrate nitrogen, the lake water rich in nitrate nitrogen passes through the sulfur autotrophic denitrification nutrition fillers to enrich the sulfur autotrophic denitrification bacteria, and the temperature is controlled at 25 ℃ in the enrichment process, and the enrichment of the sulfur autotrophic denitrification bacteria is completed after 20 days. The sulfur autotrophic denitrifying bacteria use low-valence-state sulfur to replace a carbon source as an electron donor and nitrate or nitrite in water as an electron acceptor to realize deep water bodyAnd (4) denitrification. The main water quality indexes of the repaired lake water body reach the V-type standard of surface water environmental quality standard (GB3838-2002), and nitrate nitrogen in the water body is always maintained in a very low range of 0.005-0.01 mg/L, which indicates that denitrification is thorough in the repairing process and the problem of nitrite nitrogen accumulation is not caused.
Claims (10)
1. The sulfur autotrophic bacteria nutrition filler is characterized by being prepared by mixing the following raw material components in parts by weight: 90-110 parts of polyol, 0.1-2 parts of catalyst, 0.5-2 parts of surfactant, 40-70 parts of isocyanate compound, 1-30 parts of sulfur powder, 1-15 parts of zeolite powder and 3-8 parts of foaming agent.
2. The sulfur autotrophic bacteria nutrient filling material according to claim 1, wherein the polyol is one or more of polyether polyol, polyester polyol and bio-based polyol with a molecular weight of 5000-20000.
3. The sulfur autotrophic bacteria nutrient filling material according to claim 2, wherein the polyether polyol is one or more of amine terminated polyether polyol, dihydroxy polyether polyol and trihydroxy polyether polyol; the polyester polyol is sulfonate modified polyester polyol.
4. The sulfur autotrophic bacteria nutrient filling material according to claim 1, wherein the catalyst is one or more of triethanolamine, triethylene diamine, 2-methylcyclohexylamine, dibutyltin dilaurate and stannous octoate.
5. The sulfur autotrophic bacteria nutrient filling material according to claim 1, wherein the surfactant is one or more of high efficiency silicone glycol copolymer, silicone stabilizer, silicone polyether copolymer, and organosilicon compound.
6. The sulfur autotrophic bacteria nutrient filling material according to claim 1, wherein the isocyanate compound is one or more of toluene diisocyanate, diphenylmethane diisocyanate, and hexamethyl diisocyanate.
7. The sulfur autotrophic bacteria nutrient filling material as claimed in claim 1, wherein the sulfur powder has a particle size of 100-200 mesh.
8. The sulfur autotrophic bacteria nutrient filling material as claimed in claim 1, wherein the zeolite powder has a particle size of 180-200 mesh.
9. A method of preparing a sulfur autotrophic bacteria nutritive filler based on any one of claims 1-8, comprising the steps of:
step S1: heating the polyol and the isocyanate compound at 35 ℃ for 1-2 hours;
step S2: the sulfur powder is mechanically sieved for 200 meshes for the first time, the sulfur powder with the granularity of less than 200 meshes is selected, the selected sulfur powder is mechanically sieved for 100 meshes for the second time, and the sulfur powder with the granularity of 100 meshes and 200 meshes is selected;
mechanically sieving zeolite powder with 200 meshes for the first time to select sulfur powder with the granularity of less than 200 meshes, mechanically sieving the selected zeolite powder with 180 meshes for the second time to select the zeolite powder with the granularity of 180 meshes and 200 meshes;
step S3: stirring and mixing the polyol, the catalyst, the surfactant and the foaming agent in parts by weight, wherein the stirring time is controlled to be 20-60 seconds;
step S4: adding isocyanate compounds into the mixture of S3, and continuously stirring and mixing for 20-60 seconds;
step S5: pouring the mixture of S4 into a low-pressure foaming machine, adding the sulfur powder with the granularity of 100-200 meshes and the zeolite powder with the granularity of 180-200 meshes selected in the step S2, uniformly stirring, and foaming, wherein the foaming temperature is controlled at 20-30 ℃;
step S6: standing for 30-50min after foaming, and demolding to obtain the sulfur-loaded reticular polyurethane;
step S7: cutting the reticular polyurethane loaded with the sulfur simple substance obtained in the step S6 into square particles, controlling the side length of the square particles to be 20-50 mm, and purging the polyurethane square particle micro-channels;
step S8: and (4) filling the polyurethane square particles obtained in the step (S7) into a polypropylene hollow fishing net-shaped sphere to obtain the sulfur autotrophic bacteria nutrition filler.
10. The method for deep denitrification of sewage based on the sulfur autotrophic bacteria nutrient packing of claims 1-8, wherein an artificial pond is excavated in the sewage to be treated or a natural water body is utilized, a floating ecological floating island is arranged in the water body, aquatic plants are planted on the upper part of the floating island, and the sulfur autotrophic bacteria nutrient packing is hung on the lower part of the floating island; or an ecological filter tank is arranged in the water body, and the sulfur autotrophic bacteria nutrition filler prepared by the method is filled in the filter tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588799.2A CN112624329A (en) | 2020-12-29 | 2020-12-29 | Sewage deep denitrification filler taking sulfur autotrophic denitrification as core and treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588799.2A CN112624329A (en) | 2020-12-29 | 2020-12-29 | Sewage deep denitrification filler taking sulfur autotrophic denitrification as core and treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112624329A true CN112624329A (en) | 2021-04-09 |
Family
ID=75285998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011588799.2A Pending CN112624329A (en) | 2020-12-29 | 2020-12-29 | Sewage deep denitrification filler taking sulfur autotrophic denitrification as core and treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112624329A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104976A (en) * | 2021-05-08 | 2021-07-13 | 无锡映川环境技术有限公司 | Flocculent autotrophic denitrification composite material and preparation method thereof |
| CN114920351A (en) * | 2022-05-19 | 2022-08-19 | 中建环能科技股份有限公司 | Sewage denitrification carrier and preparation method and application thereof |
| CN115072867A (en) * | 2022-07-18 | 2022-09-20 | 湖南诚通天岳环保科技有限公司 | Deep denitrification filler and preparation method thereof |
| CN117361749A (en) * | 2023-12-07 | 2024-01-09 | 中建环能科技股份有限公司 | Preparation method of sewage denitrification carrier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7109022B1 (en) * | 1998-09-25 | 2006-09-19 | Nitchitsu Co., Ltd | Composition containing calcium carbonate particles dispersed in sulfur for removing nitrate nitrogen |
| KR100836661B1 (en) * | 2007-06-11 | 2008-06-10 | 고려대학교 산학협력단 | Porous media for autotrophic denitrification using sulfur |
| CN105461879A (en) * | 2015-11-11 | 2016-04-06 | 浙江省林业科学研究院 | Multipurpose polyurethane effective microorganism solidification carrier |
| CN107722230A (en) * | 2017-10-16 | 2018-02-23 | 北京北排科技有限公司 | A kind of inorganic filler modified polyurethane foam material and preparation method thereof |
| CN110104760A (en) * | 2019-04-24 | 2019-08-09 | 南京大学 | A kind of preparation of calcium/magnesium carbonate powder body material modified sulfur light material and its application method |
-
2020
- 2020-12-29 CN CN202011588799.2A patent/CN112624329A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7109022B1 (en) * | 1998-09-25 | 2006-09-19 | Nitchitsu Co., Ltd | Composition containing calcium carbonate particles dispersed in sulfur for removing nitrate nitrogen |
| KR100836661B1 (en) * | 2007-06-11 | 2008-06-10 | 고려대학교 산학협력단 | Porous media for autotrophic denitrification using sulfur |
| CN105461879A (en) * | 2015-11-11 | 2016-04-06 | 浙江省林业科学研究院 | Multipurpose polyurethane effective microorganism solidification carrier |
| CN107722230A (en) * | 2017-10-16 | 2018-02-23 | 北京北排科技有限公司 | A kind of inorganic filler modified polyurethane foam material and preparation method thereof |
| CN110104760A (en) * | 2019-04-24 | 2019-08-09 | 南京大学 | A kind of preparation of calcium/magnesium carbonate powder body material modified sulfur light material and its application method |
Non-Patent Citations (1)
| Title |
|---|
| 唐文浩: "《池塘生态健康养殖闭环水技术研究》", 31 December 2006, 中国农业大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104976A (en) * | 2021-05-08 | 2021-07-13 | 无锡映川环境技术有限公司 | Flocculent autotrophic denitrification composite material and preparation method thereof |
| CN114920351A (en) * | 2022-05-19 | 2022-08-19 | 中建环能科技股份有限公司 | Sewage denitrification carrier and preparation method and application thereof |
| CN115072867A (en) * | 2022-07-18 | 2022-09-20 | 湖南诚通天岳环保科技有限公司 | Deep denitrification filler and preparation method thereof |
| CN115072867B (en) * | 2022-07-18 | 2023-12-22 | 湖南诚通天岳环保科技有限公司 | Deep denitrification filler and preparation method thereof |
| CN117361749A (en) * | 2023-12-07 | 2024-01-09 | 中建环能科技股份有限公司 | Preparation method of sewage denitrification carrier |
| CN117361749B (en) * | 2023-12-07 | 2024-03-15 | 中建环能科技股份有限公司 | Preparation method of sewage denitrification carrier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112624329A (en) | Sewage deep denitrification filler taking sulfur autotrophic denitrification as core and treatment method | |
| CN1188357C (en) | Deep processing method for deodorizing waste water by soll microorganism | |
| CN110104760B (en) | Preparation and application method of calcium/magnesium carbonate powder material modified sulfur light material | |
| CN103265144B (en) | Town wastewater treatment process and device with intensified nitrogen and phosphorus removing function | |
| CN110028159A (en) | Construct method, artificial swamp and the strengthened denitrification method of strengthened denitrification artificial swamp | |
| CN1709806A (en) | Method for operating anaerobic ammonium oxidation vessel and anaerobic ammonium oxidation equipment | |
| CN107176700B (en) | Method for treating domestic sewage by using aerobic denitrifying bacteria pre-domesticated filler reactor | |
| CN112047565A (en) | PHBV-pyrite substance mixotrophic denitrification biofilm reactor and application thereof | |
| CN108545887B (en) | Method for removing hydrogen sulfide by denitrification of sulfide type DEAMOX post-positioned anoxic filter tank based on AAO-BAF process effluent | |
| CN108658230B (en) | Device and method for strengthening denitrification and dephosphorization by AAO + BAF (anaerobic anoxic/oxic + BAF) process based on DEAMOX (anoxic/oxic) filter tank | |
| CN113264641A (en) | Multistage ecological wetland high-efficiency purification system | |
| CN114634276A (en) | Nitrogen and phosphorus removal integrated rural domestic sewage treatment system and treatment method thereof | |
| CN209872514U (en) | Composite ecological reactor based on A2O | |
| CN110451649B (en) | Artificial wetland capable of backwashing and manufacturing and operating modes thereof | |
| KR20220125120A (en) | Wastewater treatment method using soil microorganism and ordor-free and high-level treatment system thereof | |
| Elmitwalli et al. | Treatment of domestic sewage at low temperature in a two-anaerobic step system followed by a trickling filter | |
| Juanicó et al. | Semi-intensive treatment plants for wastewater reuse in irrigation | |
| CN108862943B (en) | Adjustable biomembrane-activated sludge sewage treatment method and device | |
| KR100673831B1 (en) | Treatment methods of swine wastewater, landfill leachate and night soil | |
| CN114349281B (en) | Nitrogen and phosphorus removal treatment device for low-carbon-nitrogen-ratio polluted water and water treatment method | |
| CN108840441A (en) | A kind of ecology synthesis repairing and treating system of black smelly river body | |
| CN113896322A (en) | Device and method for denitrifying and denitrifying rare earth tail water based on MBBR (moving bed biofilm reactor) process | |
| JP2006061879A (en) | Waste water treatment method and device | |
| CN210796143U (en) | Microorganism immobilization carrier for mineralizing bottom mud of black and odorous river | |
| CN111777265A (en) | Intermittent aeration aerobic/anoxic (O/A) type artificial rapid infiltration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210409 |
|
| RJ01 | Rejection of invention patent application after publication |