CN106865910A - A kind of method that organic wastewater containing bacterium is disinfected - Google Patents
A kind of method that organic wastewater containing bacterium is disinfected Download PDFInfo
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- 241000894006 Bacteria Species 0.000 title claims abstract description 44
- 239000002351 wastewater Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011941 photocatalyst Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 17
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 17
- 229910052724 xenon Inorganic materials 0.000 claims description 16
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- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 4
- 244000005700 microbiome Species 0.000 abstract description 17
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- 239000000126 substance Substances 0.000 abstract description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 5
- 230000001954 sterilising effect Effects 0.000 abstract description 4
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 3
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- 229910021529 ammonia Inorganic materials 0.000 description 3
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
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- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
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- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
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- 239000010802 sludge Substances 0.000 description 2
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of method that organic wastewater containing bacterium is disinfected, organic wastewater containing bacterium is set to pass sequentially through TiO2Photocatalyst and water plant biological grid, meanwhile, using ultraviolet pulse light to TiO2Photocatalyst and organic wastewater containing bacterium are irradiated, and water plant biological grid is irradiated using visible ray.The present invention is had an effect using the sterilization of strong ultraviolet radioactive with ozone, photocatalysis, the biological purification of water plant biological grid with reference to nano titanium oxide, can efficiently, thoroughly kill microorganism in sewage, effectively absorb organic pollution and fume, strengthen the effect of sewage disposal, reduce the use of chemicals.
Description
Technical field
The invention belongs to treatment of Organic Wastewater field, and in particular to a kind of method that organic wastewater containing bacterium is disinfected.
Background technology
Organic wastewater is exactly the waste water based on organic pollution, and organic wastewater easily causes Water Eutrophication, hazard ratio
It is larger.Containing organic matters such as substantial amounts of carbohydrate, fat, albumen, celluloses in these waste water, if directly discharged, meeting
Cause severe contamination.Organic wastewater can be divided into three major types by its property source：It is readily biodegradable organic wastewater；Organic matter can be with
Degraded, but the waste water for containing hazardous substance；Contain the organic wastewater that difficult degradation is biological and harmful.
Organic concentration is high.COD is general in more than 2000mg/, the even as high as tens of thousands of or even hundreds of thousands mg/L having；Colourity
Height, there is peculiar smell.Some waste water give out pungent stench, are had undesirable effect to surrounding environment.It is contained organic in organic wastewater
Pollutant complex structure；Complicated component, is occupied containing the useless Organic substance in water of toxicant with aromatic compound and heterocyclic compound,
More than contain sulfide, nitride, heavy metal and toxic organic compound.Wastewater biochemical is poor, and toxic to microorganism, it is difficult to use
General biochemical method treatment.
The content of the invention
The technical problems to be solved by the invention are：Solve the existing germicidal efficiency for the treatment of of Organic Wastewater containing bacterium low and organic
Thing content problem high.
The technical scheme is that：A kind of method that organic wastewater containing bacterium is disinfected, it is characterised in that make to have containing bacterium
Machine waste water passes sequentially through TiO2Photocatalyst and water plant biological grid, meanwhile, the ultraviolet arteries and veins produced using high voltage pulse xenon lamp
Wash off to TiO2Photocatalyst and organic wastewater containing bacterium are irradiated, using the visible ray of high voltage pulse xenon lamp generation to aquatic plant
Thing biological grid is irradiated.
Further, TiO2Photocatalyst is by porous silicon glueballs and the Nano titanium dioxide structure being filled in porous silicon glueballs
Into.
Further, high voltage pulse xenon lamp sends out the ultraviolet of different-waveband using the method for optical coating wavelength separated
The respective leading role of life, wherein, UVA and UVB wave bands are directed to TiO2On photocatalyst, and the shorter UVC and UVD wave bands of wavelength
It is directed in organic wastewater containing bacterium and the air above it, and the visible light part in spectrum, then it is oriented to water plant biological grid.
Further, water plant biological grid includes grid skeleton, biological active filling material and water plant, described biological living
Property filler is filled in grid skeleton, and water plant is fixed on grid skeleton surface.
The ultraviolet ray intensity that ultraviolet pulse light is produced is high, can directly kill the microorganism in organic wastewater containing bacterium, strong purple
Under outer light irradiation, make TiO2Optical catalyst module produces very strong catalytic action, the organic dirt in efficient-decomposition organic wastewater containing bacterium
Dye thing and have very strong bactericidal action, ultraviolet light can also ionized air, generation ozone, to going out, organic wastewater containing bacterium disappears
Poison；And the visible ray that ultraviolet pulse light source module is produced, the growth for promoting water plant.
TiO2Optical catalyst module is with silica gel bead as carrier, and it is small that Nano titanium dioxide photocatalyst is effectively coupled to silica gel
On ball.Because silica gel bead is stable in properties, it is not easily decomposed, micropore is numerous, can effectively accommodates nano titanium oxide, keeps
Its catalysis activity, is thus advantageous to the long-term use of photocatalyst material, improves the reliability and long-term effectiveness of system, reduces
Use cost.TiO2Itself not changed under the irradiation of light can but promote chemical reaction, with catalysis.Specifically
Reaction is：TiO2After the ultraviolet in absorbing lighting source, the free radical of oxidisability is formed, having for dissociating in air and water
Evil material and microorganism resolve into harmless carbon dioxide and water, can rapidly decompose formaldehyde, benzene, ammonia, VOC in air and water
Deng pernicious gas, the cell membrane that can be destroyed in bacterium, virus loses bacterium mass flow, solidifies virus protein, in exterminating bacterium
While, moreover it is possible to decompose the harmful compound discharged in bacterium residuum.This superpower oxidation, moreover it is possible to remove rapidly various
Peculiar smell.
Water plant biology grid module is a kind of restoration of the ecosystem intensifying device, mainly by microbe carrier stuffing and aquatic plant
Thing is constituted, and by the common function of completing restoration of the ecosystem of the synergy of the two, larger life can be enriched with limited space
Thing amount, reaches fast and efficiently treatment effect.The presence of biological grid cause the basic environment of microbe survival by original gas,
Liquid two-phase is changed into gas, liquid, solid three-phase, this existence form more rich for microorganism creates, and forms in longitudinal and transverse two sides
To the combined type ecosystem that is mutually related.The complexity that microorganism is made up of bacterium, fungi, algae, protozoan etc. on longitudinal direction
Miniature biochemical analyzer decomposing pollutant step by step；Suspension aerobic, good attachment are constituted on direction in transverse direction by liquid to carrier
Oxygen type, attachment facultative type, attachment the various different type microorganism groups of anaerobic type into biofilm system.When sewage is flowed through, suspend
Thing is filled and plant stops retention, organic pollution by the absorption of plant and biomembrane, assimilation, dissimilation and go
Remove.
Compared with prior art, the invention has the advantages that：
The present invention is had an effect using the sterilization of strong ultraviolet radioactive with ozone, is made with reference to the photocatalysis of nano titanium oxide
With the biological purification of, water plant biological grid, microorganism in sewage can efficiently, be thoroughly killed, effectively absorb organic contamination
Thing and interception fume, strengthen the effect of sewage disposal, reduce the use of chemicals.
Brief description of the drawings
Fig. 1 is principle schematic of the invention.
Specific embodiment
Embodiment 1
As shown in figure 1, a kind of method that organic wastewater containing bacterium is disinfected, makes organic wastewater containing bacterium pass sequentially through TiO2Light
Catalyst and water plant biological grid, meanwhile, using ultraviolet pulse light to TiO2Photocatalyst and organic wastewater containing bacterium are irradiated, profit
Water plant biological grid is irradiated with visible ray.
Organic wastewater containing bacterium passes through TiO first2Photocatalyst, TiO2After the ultraviolet for absorbing ultraviolet pulse light, oxidation is formed
Property free radical, in air and water dissociate harmful substance and microorganism resolve into harmless carbon dioxide and water, can be with fast
Speed decomposes the pernicious gases such as formaldehyde, benzene, ammonia, the VOC in air and water, the cell membrane that can be destroyed in bacterium, virus, makes bacterium
Mass flow is lost, solidification virus protein, while exterminating bacterium, moreover it is possible to decompose the harmful compound discharged in bacterium residuum.This
Plant superpower oxidation, moreover it is possible to remove various peculiar smell rapidly.
The ultraviolet ray intensity that ultraviolet pulse light is produced is high, can directly kill the microorganism in organic wastewater containing bacterium, strong purple
Under outer light irradiation, make TiO2Photocatalyst produces very strong catalytic action, the organic pollution in efficient-decomposition organic wastewater containing bacterium
And with very strong bactericidal action, ultraviolet light can also ionized air, produce ozone, to going out, organic wastewater containing bacterium carries out disinfection；And
The visible ray that ultraviolet pulse light source module is produced, the photosynthesis for promoting water plant, it is ensured that its normal growth.
By TiO2Organic wastewater containing bacterium after photocatalyst treatment is by water plant biology grid module, and water plant is biological
A kind of restoration of the ecosystem intensifying device of grid module, is mainly made up of, by the collaboration of the two microbe carrier stuffing and water plant
The common function of completing restoration of the ecosystem of effect, can be enriched with larger biomass in limited space, reach and fast and efficiently locate
Reason effect.The presence of biological grid causes that the basic environment of microbe survival is changed into gas, liquid, solid three by original air-liquid two-phase
Phase, this existence form more rich for microorganism creates is formd ecological in the longitudinal and transverse two directions combined type that is mutually related
System.Microorganism decomposes dirt step by step by the complicated miniature ecosystem that bacterium, fungi, algae, protozoan etc. constitute on longitudinal direction
Dye thing；Suspension aerobic, attachment aerobic are constituted on direction in transverse direction by liquid to carrier, adhered to facultative type, adhered to and detest
The various different type microorganism groups of oxygen type into biofilm system.When sewage is flowed through, suspension is filled and plant stops retention,
Organic pollution by the absorption of plant and biomembrane, assimilation, dissimilation and remove.
Embodiment 2
On the basis of embodiment 1, TiO2Photocatalyst is by porous silicon glueballs and the nanoscale being filled in porous silicon glueballs
Titanium dioxide is constituted.TiO2With silica gel bead as carrier, Nano titanium dioxide photocatalyst is effectively coupled to silica gel to photocatalyst
On bead.Because silica gel bead is stable in properties, it is not easily decomposed, micropore is numerous, can effectively accommodates nano titanium oxide, protects
Its catalysis activity is held, the long-term use of photocatalyst material is thus advantageous to, the reliability and long-term effectiveness of system is improve, dropped
Low use cost.TiO2Itself not changed under the irradiation of light can but promote chemical reaction, with catalysis.Tool
Precursor reactant is：TiO2After the ultraviolet in absorbing lighting source, the free radical of oxidisability is formed, what is dissociated in air and water
Harmful substance and microorganism resolve into harmless carbon dioxide and water, can decompose rapidly formaldehyde in air and water, benzene, ammonia,
The pernicious gases such as VOC, the cell membrane that can be destroyed in bacterium, virus loses bacterium mass flow, solidifies virus protein, in antivirus
While sterilizing, moreover it is possible to decompose the harmful compound discharged in bacterium residuum.This superpower oxidation, moreover it is possible to rapid removal
Various peculiar smell.
Embodiment 3
On the basis of embodiment 1 or 2, ultraviolet pulse light and visible ray are by the arteries and veins being arranged on above organic wastewater containing bacterium
Pressure of leaping high xenon lamp is produced.The general principle of high voltage pulse xenon lamp is that high-pressure xenon is encapsulated in quartz glass lamp vessel, two
End applies instant high-voltage (reaching thousands of volts, continue hundreds of microseconds), punctures the gas moment in fluorescent tube, forms strong electricity
From radioluminescence, strong light radiation is produced.The radiation spectrum of xenon lamp is pressed with pass with size of current, inflation.In low pressure, weak current shape
Under state, xenon lamp launches a series of feature line spectrum of xenon atoms.With the liter that operating voltage is raised, arc length is lengthened and inflation is pressed
Height, radiation spectrum is gradually expanded into the continuous spectrum similar to solar spectrum, and some line spectrums are superimposed thereon.In operating current and
Further under conditions of increase, this continuous spectrum can be significant to ultraviolet section of movement for xenon air pressure, as strong ultraviolet source,
The ultraviolet component of below wavelength 400nm is up to more than the 30% of total luminous energy.The above physical characteristic of xenon flash lamp determines that it can
To produce the light radiation of high brightness, its brightness can reach thousands of or even up to ten thousand times of solar irradiation intensity, be that laser is removed on the earth
Most bright light source in addition.With the diameter 9mm commonly used in food sterilization industry, as a example by the straight tube xenon flash lamp of die opening 100mm, when
When injection electric energy is 1800J, up to thousands of watts of ultraviolet irradiation intensities every square centimeter are capable of achieving near fluorescent tube, when continuing
Between only 200 microseconds.So ultraviolet irradiation of high intensity, it is sufficient to kill any microorganism near fluorescent tube, killing rate is up to
More than 99.9%.Usual photocatalyst of titanium dioxide, is operated under most only ultraviolet irradiation intensities of tens milliwatts, such as
Fruit is irradiated with the ultraviolet source of this multikilowatt, and the effect of its efficiency and decomposing organic pollutant can also be greatly reinforced.Separately
On the one hand, although irradiation intensity is big, because exposure time is short (the only levels of hundreds of microseconds), this light source can also be can be regarded as
" cold light source ", light source is generated heat not seriously with material is illuminated, and cooling requirement is substantially reduced, and system energy consumption is also very low, is one
Plant energy-saving light source.
Embodiment 4
On the basis of embodiment 3, high voltage pulse xenon lamp makes different-waveband using the method for optical coating wavelength separated
Ultraviolet there is respective leading role, wherein, UVA and UVB wave bands are directed to TiO2On photocatalyst, and wavelength is shorter
UVC and UVD wave bands are directed in organic wastewater containing bacterium and the air above it, and the visible light part in spectrum, then it is oriented to water
Plant biological grid.To give full play to the effect of strong ultraviolet source, system effectiveness is improved, using the side of optical coating wavelength separated
Method, makes the ultraviolet of different-waveband that respective leading role to occur.Wherein, UVA and UVB wave bands, are primarily directed toward photocatalyst material
On material, promote photochemically reactive generation.And the shorter UVC and UVD wave bands of wavelength, because it is sterilized and produces ozoniferous ability
By force, it is directed in water and air, gives full play to its sterilized effect with manufacture ozone.And the visible light part in spectrum,
Biological grid is then oriented to, promotes aquatic plants growth, reach the effect of biological cleaning.
Embodiment 5
On the basis of embodiment 1 or 2 or 3 or 4, water plant biological grid include grid skeleton, biological active filling material and
Water plant, the biological active filling material is filled in grid skeleton, and water plant is fixed on grid skeleton surface.By in water
Vertical grid is laid in body, grid does skeleton using rigid support, filled high polymer biological active filling material in skeleton.Filler is used
Be modified for macromolecular material by the promotion formula of biology enzyme, the catalytic action of enzyme is improved, with larger surface area.Biology is living
Property filler can catch removal from suspended sludge area " escape " small sludge flco, and reduce delivery turbidity, effectively protect
Stable effluent quality is demonstrate,proved.Rigid backbone plays a part of support biological active filling material and is distributed in water body.Water plant is (very
Water botanical system and the three-dimensional collocation of submerged plant system) wrapped up and tied knots with a small amount of cotton felt by lower end and be fixed on grid, grid
Fiber on lattice and filler has extremely strong fixed root system ability, and three-level root system mutually winds with filler fibre, two grades of root systems with
Grid is crossed through in gap, and through grid space between each grid cell, is filled with, ripe later plant can be with life
Thing active filler is combined closely.The extension reduction resistance to water-flow of root system, will not also form short stream and reduce effective contact area, increase
The strong crown_interception to suspended material.Under flow action, the lateral growth process of root system is also drawn it and fixes filler fibre
Lateral space distribution, improve space service efficiency.Macromolecule biological activity filler has resistance to particulate form pollutant in water body
The effect for stay, filter, adsorb, precipitating.Secondly, the high molecular reactive biologic packing material of filling and water plant surface can in grid
The substantial amounts of aerobic microbiological of apposition growth.Such microorganism biological activity is high, can be in very short time nitrogen oxide, Phosphorus pollutant
Matter, microbial accumulation forms biofilm system, and there is biomembrane the decomposition and inversion extremely strong to pollutant to act on；Preferred fast-growing simultaneously
Water plant fully absorbed dissolved matter in sewage, harvesting regular to plant makes pollutant be exported from water body.Pass through
The common environmental purification completed to sewage rapidly and efficiently of the synergy of grid, active filler and biology.At medical sewage
In science and engineering journey, biological grid is designed to the module of various patterns and is positioned in water body, and various microorganisms and water plant will be fixed
Or be colonized on biological grid and gradually form stable microecosystem.Numerous studies data shows that sewage water body middle and high concentration has
The materials such as machine thing, salt are not the immediate causes for causing the decline of very water and submerged plant dead, and the light transmittance of sewage is low leads
Cause plant to receive not enough to illumination, be allowed to photosynthesis and weaken, grow the inadaptable main cause for being only plant recession.The system
Interior xenon source intensity is high and is adjustable to the most suitable scope of plant receiving, the approximate daylight of spectral region, using the teaching of the invention it is possible to provide aquatic
The illumination condition of plant normal growth.
Claims (4)
1. a kind of method that organic wastewater containing bacterium is disinfected, it is characterised in that make organic wastewater containing bacterium pass sequentially through TiO2Light is touched
Matchmaker and water plant biological grid, meanwhile, using the ultraviolet pulse light of high voltage pulse xenon lamp generation to TiO2Photocatalyst and containing bacterium
Organic wastewater is irradiated, and the visible ray produced using high voltage pulse xenon lamp is irradiated to water plant biological grid.
2. the method that a kind of organic wastewater containing bacterium according to claim 1 is disinfected, it is characterised in that TiO2Photocatalyst
It is made up of porous silicon glueballs and the Nano titanium dioxide being filled in porous silicon glueballs.
3. the method that a kind of organic wastewater containing bacterium according to claim 1 is disinfected, it is characterised in that high voltage pulse xenon
Gas lamp makes the ultraviolet of different-waveband that respective leading role to occur using the method for optical coating wavelength separated, wherein, UVA and
UVB wave bands are directed to TiO2On photocatalyst, and the shorter UVC and UVD wave bands of wavelength are directed to organic wastewater containing bacterium and its top
Air in, and the visible light part in spectrum is then oriented to water plant biological grid.
4. the method that a kind of organic wastewater containing bacterium according to claim 1 is disinfected, it is characterised in that water plant gives birth to
Thing grid include grid skeleton, biological active filling material and water plant, and the biological active filling material is filled in grid skeleton, aquatic
Plant is fixed on grid skeleton surface.
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| CN107495059A (en) * | 2017-09-29 | 2017-12-22 | 贵州贵果王实业有限公司 | A kind of red pitaya wine preparation sterilizes conveying device with fruit juice |
| CN108483770A (en) * | 2018-05-30 | 2018-09-04 | 常州市兰诺光电科技有限公司 | A kind of photodissociation wastewater treatment equipment |
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| KR20110066743A (en) * | 2009-12-11 | 2011-06-17 | 대림산업 주식회사 | Recalcitrant harmful material and graywater treatment system and method |
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Effective date of registration: 20191203 Address after: No. 1607, 16 / F, No. 1858, middle section of Yizhou Avenue, hi tech Zone, Chengdu, Sichuan 610000 Applicant after: Chengdu St. Wright Environmental Protection Technology Co., Ltd. Address before: 268 No. 621000 Mianyang city of Sichuan Province Branch Chong District Jiuzhou Avenue Applicant before: Sichuan Zhuo Zhong Science and Technology Ltd. |
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Application publication date: 20170620 |