CN108483623A - A kind of oxygen slow-release material and preparation method thereof and preparation facilities improving water bottom environment - Google Patents
A kind of oxygen slow-release material and preparation method thereof and preparation facilities improving water bottom environment Download PDFInfo
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- CN108483623A CN108483623A CN201810311986.2A CN201810311986A CN108483623A CN 108483623 A CN108483623 A CN 108483623A CN 201810311986 A CN201810311986 A CN 201810311986A CN 108483623 A CN108483623 A CN 108483623A
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- China
- Prior art keywords
- oxygen
- porous media
- slow
- release material
- wrapping layer
- Prior art date
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- Granted
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- 239000001301 oxygen Substances 0.000 title claims abstract description 110
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 110
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 239000000463 material Substances 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- 229920001661 Chitosan Polymers 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 239000002202 Polyethylene glycol Substances 0.000 claims description 11
- 229920001223 polyethylene glycol Polymers 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical group ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 4
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- -1 three is 3:1:5 Substances 0.000 claims description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 2
- 229920001817 Agar Polymers 0.000 claims description 2
- 229920002101 Chitin Polymers 0.000 claims description 2
- 108010010803 Gelatin Proteins 0.000 claims description 2
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 239000008272 agar Substances 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 229920000159 gelatin Polymers 0.000 claims description 2
- 239000008273 gelatin Substances 0.000 claims description 2
- 235000019322 gelatine Nutrition 0.000 claims description 2
- 235000011852 gelatine desserts Nutrition 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 239000000661 sodium alginate Substances 0.000 claims description 2
- 235000010413 sodium alginate Nutrition 0.000 claims description 2
- 229940005550 sodium alginate Drugs 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 229920001285 xanthan gum Polymers 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- 244000005700 microbiome Species 0.000 abstract description 7
- 230000001590 oxidative effect Effects 0.000 abstract description 4
- 238000003911 water pollution Methods 0.000 abstract description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000969 carrier Substances 0.000 abstract description 2
- 229960003903 oxygen Drugs 0.000 abstract description 2
- 238000009395 breeding Methods 0.000 abstract 1
- 230000001488 breeding effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 7
- 239000013049 sediment Substances 0.000 description 7
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 description 6
- 238000005273 aeration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000013268 sustained release Methods 0.000 description 4
- 239000012730 sustained-release form Substances 0.000 description 4
- 239000004343 Calcium peroxide Substances 0.000 description 3
- 235000019402 calcium peroxide Nutrition 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical group [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 229910001919 chlorite Inorganic materials 0.000 description 2
- 229910052619 chlorite group Inorganic materials 0.000 description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 244000018633 Prunus armeniaca Species 0.000 description 1
- 235000009827 Prunus armeniaca Nutrition 0.000 description 1
- 244000126002 Ziziphus vulgaris Species 0.000 description 1
- 241001123263 Zostera Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000003976 plant breeding Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000002023 wood Substances 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
- C02F3/02—Aerobic processes
- C02F3/025—Biological purification using sources of oxygen other than air, oxygen or ozone
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention relates to water pollutions to administer field, and in particular to a kind of oxygen slow-release material and preparation method thereof and preparation facilities improving water bottom environment.It includes porous media and wrapping layer, which is characterized in that further include porous media hole in oxygen, wrapping layer wraps makes oxygen seal in the hole of porous media on the surface of porous media.Using porous media hole as oxy-gen carriers, pure oxygen as source of oxygen so that the oxygen slow-release material puts into that water body does not have strong oxidizing property and alkaline matter generates again, is conducive to the growth and breeding of microorganism and plant；Meanwhile the wrapping layer used can make oxygen slow release, certain level can be kept within a couple of days by launching the dissolved oxygen of water bottom, and aerobic environment is provided for plant and microorganisms.The present invention also provides the preparation method of slow-release oxygen material and preparation facilities.
Description
Technical field
The present invention relates to water pollution administer field, and in particular to it is a kind of improve water bottom environment oxygen slow-release material and
Preparation method and preparation facilities.
Background technology
With the development of economy, the distribution of water pollution getting worse, black and odorous water is also increasingly wider.For black and odorous water
Improvement implement the structure of water ecosystem in addition to controlling internal and external pollution sources beyond the region of objective existence, promote water body self-purification ability, be
The guarantee long-acting lasting fundamental way of repairing effect, and dissolved oxygen levels in water body, are that heavy water is planted in limitation water ecosystem
The key factor that object restores.It is horizontal to increase Dissolved Oxygen in Water, microorganisms in water habitat can be improved, enhances aerobic microbiological in water
Vigor is simultaneously allowed to population quantity increase, has effectively facilitated degradation of the microorganism to organic pollution, and can promote water plant
It sprouts, grow and breeds, and oxygen is further discharged by the photosynthesis of plant, increase dissolved oxygen, absorption and conversion N, P etc. are organic
Object makes water area ecological environment gradually improve.
The method of dissolved oxygen is mainly physics aeration in existing promotion water body, is widely used in all kinds of sewage disposal necks
Domain.Aeration is broadly divided into sprays (such as biofilter) in air by liquid；So that air bubble is spread in a liquid, (such as air blast exposes
Gas)；Update liquid level makes air shift (such as mechanical aeration) three kinds of modes to liquid phase at interface.However, aeration is in river, lake etc.
Application in large-scale natural water body, due to the place of its method, the scale of equipment, the transport of equipment and assembling, power supply and distribution,
The limitation of the various factors such as operating cost, and receive the restriction of various factors.
Increase the limitation of the factors such as duration, the energy consumption in water body present in dissolved oxygen based on Physical, in recent years about
The structure of oxygen slow-release material gradually rises, and Existing methods are mainly sustained embedding medium by structure, by the chemicals of potential production oxygen
Matter is wrapped up wherein, these substances are dissolved in reaction release oxygen after water, but due to the limitation of wrapping layer, oxygen release rate is controllable
, therefore slow oxygen release can be realized to a certain extent.Such as a kind of patent " oxygen sustained release agent preparation method (CN of contaminated site reparation
104560051 A), it is a kind of using calper calcium peroxide be matrix attapulgite as the sustained release oxidant of coating and preparation method (CA
105820822 A), it is a kind of using calper calcium peroxide be matrix ethyl cellulose as the sustained release oxidant of coating and preparation method (CN
105925267 A), a kind of oxygen release filler (103214086 A of CN) for underground water pollution aerobe reparation etc. (including
But it is equal to be not limited to above-mentioned patent) it is all based on above-mentioned principle.But since oxygen slow-release material contained in wrapping layer is a kind of chemistry
Reagent, water body pH will be promoted while generating oxygen by meeting water reaction, may there is potential negative environmental effect.Such as peroxidating
Hydrogen is a kind of strong oxidizer, will be damaged to various animals, plant, the microorganism etc. in natural water body, although calper calcium peroxide
Itself is nontoxic, but the product after being reacted with water is calcium hydroxide, is a kind of middle highly basic, can generate larger shadow to the pH value in waters
It rings, to further be affected greatly to Ecology.
On this basis, in order to avoid chemical reagent is to Ecology negative effect that may be present, some patents attempt profit
With the physics oxygen carrier performance of certain materials, to promote dissolved oxygen levels in water body, (such as a kind of chlorite rich in micro- oxygen bubbles suspends
Liquid and load the method that micro- oxygen bubbles removal anaerobic water body causes smelly pollutant, 103626279 A of CN using chlorite).Above-mentioned side
Influence of the method to Ecology is small, but its oxygen carrying capability is restricted, and under the hydrodynamic interference in river, is loaded on material
Oxygen by quick release, it is difficult to the progress of river/lake Sediment System is repaired for a long time.
Invention content
To solve the above problems, in a first aspect, the present invention provides a kind of oxygen slow-release material improving water bottom environment, load
Oxygen ability is 4~20mg/kg, without oxygen-releasing compounds such as calcium hydroxide, hydrogen peroxide, to the nothing of water bottom environment
Harmful effect can keep the dissolved oxygen content of water bottom environment within a couple of days, improve water bottom environment.
A kind of oxygen slow-release material improving water bottom environment, including porous media and wrapping layer, which is characterized in that also wrap
The oxygen in the hole of porous media is included, wrapping layer wraps the hole for making oxygen seal in porous media on the surface of porous media
In gap.
Further, the grain size of the slow-release material is 2~5mm, and the grain size of the porous media is 1.5~4mm, package
The thickness of layer is 0.5~2mm, and the aperture of the porous media is 1~10000nm, pore volume ranging from 0.02~0.90mL/g.
Further, the wrapping layer is by chitosan, agar, xanthans, gelatin, chitin, polyethylene glycol, polyethylene
One or more manufactured films in alcohol, polyacrylamide, polyvinylpyrrolidone and sodium alginate.
Further, the wrapping layer be by chitosan, polyethylene glycol and grain size be 0.25~0.5mm the grains of sand be made/
Be made of polyvinylpyrrolidone and polyvinyl alcohol/by chitosan, acrylamide, acrylic acid, ammonium persulfate, sodium hydroxide, chlorine
Change sodium, hydrochloric acid, glutaraldehyde and N, N- methylene-bisacrylamide at film.
Further, the mass ratio for the grains of sand that the chitosan, polyethylene glycol and grain size are 0.25~0.5nm is 3:1:5.
Further, the porous media is activated carbon, zeolite, medical stone, diatomite.
The activated carbon can be a variety of materials, such as coal, timber, shell, coconut husk, walnut shell, apricot shell, jujube shell by chemistry
Wood activated charcoal made of method, Physical, chemical-physical method or physical-chemical method, beast bone/blood activated carbon, mineral raw material are lived
Property charcoal, other raw material activated carbon, regenerated carbons.Its face shaping can be powdered activated carbon, granular activated carbon, indefinite form activity
Charcoal, cylindrical activated carbon, spherical activated charcoal or other shapes of activated carbon.
Second aspect, the present invention also provides the preparation methods of the oxygen slow-release material of above-mentioned improvement water bottom environment.
A kind of preparation method for the oxygen slow-release material improving water bottom environment, including three steps：
Step 1：Porous media is placed in closed container, closed container is vacuumized, it is hollow to exclude porous media hole
It is constant to wait for that the pressure in closed container drops to, stops vacuumizing for gas；
Step 2：Oxygen is filled with into closed container, oxygen is packed into the hole of porous media, waits for the pressure in closed container
Power reaches 0.096~0.4MPa, and stopping is filled with oxygen；
Step 3：:Wrapping layer raw material is weighed according to the ratio, organic solvent is added, and heating, stirring and dissolving form package liquid, will wrap
It wraps up in liquid addition closed container to mix with porous media, heating maintains temperature in container, stirring, package liquid to wrap on porous media
Wrapping layer is formed to get oxygen slow-release material.
Further, in the step 3, wrapping layer raw material is chitosan, polyethylene glycol and the grains of sand, and the mass ratio of three is
3:1:5, organic solvent is carbon tetrachloride, and heating temperature is 20-80 DEG C.
The third aspect, the present invention also provides the preparation facilities of the oxygen slow-release material of above-mentioned improvement water bottom environment.
It is a kind of improve water bottom environment oxygen slow-release material preparation facilities, including reaction kettle, oxygen cylinder, grug feeding jar and
Vacuum pump, oxygen cylinder are connected with reaction kettle by setting valvular pipeline, and reaction kettle is with vacuum pump by setting valvular pipe
Road is connected, and grug feeding jar is connected with reaction kettle by setting valvular pipeline, and the stirring dress of stirring material is equipped in reaction kettle
The heating device with heated material is set, reaction kettle is equipped with the pressure gauge for measuring reacting kettle inner pressure.
Above-mentioned preparation facilities works in this way, and porous media is placed in reaction kettle, vacuum pump is opened, when in reaction kettle
When pressure reading is zero, the valve between vacuum pump and vacuum pump and reaction kettle is closed, opens the valve between oxygen cylinder and reaction kettle
Door, oxygen is inputted into reaction kettle, after the pressure that pressure gauge is shown reaches certain value, closes valve, at this time porous media hole
Air in gap is all replaced into purity oxygen.The valve between grug feeding jar and reaction kettle is then turned on, package liquid inputs reaction kettle,
Start the agitating device of reaction kettle, opening heating device makes temperature maintain certain temperature, and stirring is closed after stirring a period of time
Device and heating device open reaction kettle after standing, that is, obtain the material with efficient oxygen carrier and slow oxygen release function.
The beneficial effects of the present invention are：
1. oxygen slow-release material provided by the invention makes using porous media hole as oxy-gen carriers, pure oxygen as source of oxygen
The oxygen slow-release material puts into water body and does not have strong oxidizing property and alkaline matter and generates again, be conducive to the growth of microorganism and plant
Breeding；Meanwhile the wrapping layer used can make oxygen slow release, launching the dissolved oxygen of water bottom can protect within a couple of days
Certain level is held, aerobic environment is provided for plant and microorganisms；After oxygen slow-release material releases oxygen, porous media
Hole can also be in effective adsorbed water body polluter, purifying water body.
2. the preparation method of oxygen slow-release material provided by the invention, simply, fast, can also batch operation, be conducive to a large amount of
Prepare the oxygen slow-release material.
3. the oxygen slow-release material of the present invention is using polyethylene glycol, chitosan and the grains of sand as wrapping layer raw material, chitosan can
It is biodegradable, the hole formed after degradation has the release for being conducive to oxygen, the grains of sand that can increase the density of oxygen slow-release material, favorably
The sinking of oxygen slow-release material.
4. preparation facilities provided by the invention is simple, compact and reasonable, oxygen slow-release material can be produced in batches.
Description of the drawings
Fig. 1 is a kind of flow chart of the preparation method for the oxygen slow-release material improving water bottom environment；
Fig. 2 is a kind of preparation facilities structural schematic diagram for the oxygen slow-release material improving water bottom environment；
Fig. 3 is the schematic diagram that oxygen slow-release material collaboration submerged plant improves water/sediment interface oxygen environment；
Fig. 4 is the DO concentration curve figures that oxygen slow-release material collaboration submerged plant improves water/sediment interface oxygen environment.
In Fig. 2,1- oxygen cylinders；2- reaction kettles, 21- pressure gauges, 22- agitating devices, 23- heating devices；3- grug feeding jars；4-
Vacuum pump.
Specific implementation mode
The present invention is further detailed below in conjunction with the accompanying drawings.
Embodiment 1
A kind of oxygen slow-release material improving water bottom environment, including porous media, wrapping layer and the hole for including porous media
Oxygen in gap, wrapping layer wraps makes oxygen seal in the hole of porous media on the surface of porous media.The wrapping layer
It is made of chitosan, polyethylene glycol and the grains of sand, the mass ratio of the chitosan, polyethylene glycol and the grains of sand is 3:1:5.It is described porous
Medium is activated carbon.
The device for preparing above-mentioned oxygen slow-release material is as shown in Figure 2 comprising reaction kettle 2, oxygen cylinder 1, grug feeding jar 3 and vacuum
Pump 4, oxygen cylinder 1 is connected with reaction kettle 2 by setting valvular pipeline, and reaction kettle 2 is with vacuum pump 4 by setting valvular pipe
Road is connected, and grug feeding jar 3 is connected with reaction kettle 2 by setting valvular pipeline, and the stirring of stirring material is equipped in reaction kettle 2
Device 22 and heating device 23, reaction kettle are equipped with the pressure gauge 21 for measuring reacting kettle inner pressure.
The method for preparing above-mentioned oxygen slow-release material is：
Step 1：Activated carbon is placed in reaction kettle 2, vacuum pump 4 is opened and reaction kettle is vacuumized, exclude porous media hole
Air in gap waits for that the pressure in reaction kettle 2 is constant, closes valve, stops vacuumizing；
Step 2：Oxygen cylinder 1 and valve are opened, oxygen is filled with into reaction kettle 2, oxygen is packed into the hole of activated carbon, waits for
When pressure in reaction kettle reaches 0.096MPa, stop being oxygenated, closes valve；
Step 3：:Wrapping layer raw material is weighed according to the ratio：Chitosan, polyethylene glycol and the grains of sand, addition account for raw material volume 10%
Carbon tetrachloride, be heated to 25 DEG C, stirring and dissolving formed package liquid, will package liquid be added grug feeding jar 3, open valve, wrap up liquid
Into reaction kettle 2, heating device is opened, it is 25 DEG C that heating, which maintains temperature in reaction kettle 2, stirs 40 minutes, closes heating device
23 and blender 22, static 6h open reaction kettle 2 to get oxygen slow-release material.
To investigate the oxygen release effect of above-mentioned oxygen slow-release material, the bitter small stream river (black smelly and river) domestic from Chongqing City is adopted in situ
Collection sediment cores are taken back lab setup and are handled as follows：5kg deposits original position columnar samples, 5kg deposit+30g oxygen sustained release
Material covers (Fig. 3 a), deposit 5kg+ green high-efficient oxygen slow-release material 30g coverings+submerged plant eel grass seed (Fig. 3 b), surveys
The variation of DO concentration in the lower water body of fixed processing.Change curve is shown in that Fig. 4, the introducing of oxygen slow-release material can make water/sediment interface DO
It is obviously improved, until DO releases finish (water/sediment interface DO is 8.4mg/L at this time) in material after 15 days, subsequent DO declines,
Until equal with for oxygen slow-release material is added；It is introduced into after submerged plant that DO was kept within 60 day experimental period compared with Gao Shui in water body
Flat, water/sediment interface DO is still maintained at 7.9mg/L at the 60th day.
Claims (9)
1. a kind of oxygen slow-release material improving water bottom environment, including porous media and wrapping layer, which is characterized in that further include
Oxygen in the hole of porous media, wrapping layer wrap the hole for making oxygen seal in porous media on the surface of porous media
In.
2. oxygen slow-release material as described in claim 1, which is characterized in that the grain size of the slow-release material is 2~5mm, described more
The grain size of hole medium is 1.5~4mm, and the thickness of wrapping layer is 0.5~2mm, the aperture of the porous media be 1~10000nm,
Pore volume ranging from 0.02~0.90mL/g.
3. oxygen slow-release material as claimed in claim 2, which is characterized in that the wrapping layer be by chitosan, agar, xanthans,
One kind or more in gelatin, chitin, polyethylene glycol, polyvinyl alcohol, polyacrylamide, polyvinylpyrrolidone and sodium alginate
Film made of kind.
4. oxygen slow-release material as claimed in claim 3, which is characterized in that the wrapping layer is by chitosan, polyethylene glycol and grain
Diameter be the grains of sand of 0.25~0.5mm be made/be made of polyvinylpyrrolidone and polyvinyl alcohol/by chitosan, acrylamide, third
Olefin(e) acid, ammonium persulfate, sodium hydroxide, sodium chloride, hydrochloric acid, glutaraldehyde and N, N- methylene-bisacrylamides at film.
5. oxygen slow-release material as claimed in claim 4, which is characterized in that the chitosan, polyethylene glycol and grain size be 0.25~
The mass ratio of the grains of sand of 0.5nm is 3:1:5.
6. oxygen slow-release material as claimed in claim 2, which is characterized in that the porous media be activated carbon, zeolite, medical stone,
Diatomite.
7. a kind of preparation method of oxygen slow-release material as described in claim 1, which is characterized in that including three steps：
Step 1：Porous media is placed in closed container, closed container is vacuumized, air in porous media hole is excluded, waits for
Pressure in closed container drops to constant, stops vacuumizing；
Step 2：Oxygen is filled with into closed container, oxygen is packed into the hole of porous media, waits for that the pressure in closed container reaches
To 0.096~0.4MPa, stopping is filled with oxygen；
Step 3：:Weigh wrapping layer raw material according to the ratio, the material ratio of wrapping layer raw material and porous media is 1:2~5, it is added organic
Solvent, heating, stirring and dissolving wrapping layer raw material form package liquid, and closed container is added in package liquid mixes with porous media, adds
Heat maintains temperature in container, stirring, and package liquid wraps forms wrapping layer to get oxygen slow-release material on porous media.
8. preparation method as claimed in claim 7, which is characterized in that in the step 3, wrapping layer raw material is chitosan, gathers
The mass ratio of ethylene glycol and the grains of sand, three is 3:1:5, organic solvent is carbon tetrachloride, and heating temperature is 20-80 DEG C.
9. a kind of preparation facilities of oxygen slow-release material as described in claim 1, which is characterized in that including reaction kettle (2), oxygen
Bottle (1), grug feeding jar (3) and vacuum pump (4), oxygen cylinder (1) are connected with reaction kettle (2) by setting valvular pipeline, are reacted
Kettle (2) is connected with vacuum pump (4) by setting valvular pipeline, and grug feeding jar (3) is with reaction kettle (2) by setting valvular pipe
Road is connected, and the heating device (23) of the agitating device (22) and heated material of stirring material, reaction kettle are equipped in reaction kettle (2)
(2) it is equipped with the pressure gauge (21) for measuring reacting kettle inner pressure.
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| CN111316952A (en) * | 2020-03-18 | 2020-06-23 | 暨南大学 | Sustained-release oxygen-increasing granule and preparation method and application thereof |
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| CN113024034A (en) * | 2021-03-15 | 2021-06-25 | 上海良延环保科技发展有限公司 | Microbial water purification brick capable of slowly releasing strains |
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| CN113860481A (en) * | 2021-11-18 | 2021-12-31 | 陈雪文 | Black and odorous river sediment in-situ repairing agent and preparation and repairing method thereof |
| CN113860481B (en) * | 2021-11-18 | 2023-09-22 | 陈雪文 | Black and odorous river sediment in-situ repairing agent and preparation and repairing method |
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