CN106904775A - A kind of photocatalysis, nanofiltration, nano adsorption collaboration high efficiency water purifier and water purifying treating method - Google Patents
A kind of photocatalysis, nanofiltration, nano adsorption collaboration high efficiency water purifier and water purifying treating method Download PDFInfo
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- CN106904775A CN106904775A CN201710226184.7A CN201710226184A CN106904775A CN 106904775 A CN106904775 A CN 106904775A CN 201710226184 A CN201710226184 A CN 201710226184A CN 106904775 A CN106904775 A CN 106904775A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/08—Nanoparticles or nanotubes
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention discloses a kind of photocatalysis, nanofiltration, nano adsorption collaboration high efficiency water purifier and water purifying treating method, the water purifier includes the preposition combined filtering device of one-level, secondary light catalytic reactor, three-level nanofiltration device, level Four nano adsorption device, the Pyatyi post active carbon adsorbent equipment that are sequentially communicated.Fluorine high, arsenic bitter are carried out into prefilter through preposition combined filtering device first, subsequently into photo catalysis reactor, flow through the nano-photo catalytic oxidant layer of the three-dimensional porous metal ball for being loaded with nano titanium oxide, photochemical catalytic oxidation is carried out under the irradiation of low-pressure mercury light source, again by nanofiltration device salt reduction, then by nano adsorption device Adsorption fluorine, arsenic, post active carbon adsorbent equipment is eventually passed, mouthfeel is filtered and improved through cocoanut active charcoal and obtains drinking water.The present invention is used for fluorine high, the purified treatment of arsenic bitter, and using photocatalysis, nanofiltration, nano adsorption collaboration water purification, fluorine, arsenic removal rate be high, and water rate is high, and water quality is good and environmental protection and energy saving.
Description
Technical field
The present invention relates to purifier technical field, and in particular to a kind of multiple-effect for fluorine high, arsenic bitter combines association
Same water purification technology.
Background technology
Arsenic Oil repellent underground bitter high belongs to relatively common water quality in fact in China, and the body for having a strong impact on locals is good for
Health, presently the relatively effective method for this kind of water quality have reverse osmosis membrane processing method, absorption method etc., reverse-osmosis treated method
Effluent quality is relatively good, but the rate of recovery of water, than relatively low, pure water waste water ratio is 1:3 is even lower, and the waste of water is tighter
Weight, and this bitter TDS generally compares high more than 1000, additionally due to reverse osmosis membrane filtration ratio of precision is higher, retention
Microorganism and organic substance stick to film surface, life-span and the flux of film can be substantially reduced, and reverse osmosis water outlet connects
Pure water is bordering on, the mineral element beneficial to human body is also filtered in water, human body will not be produced if drinking for a long time beneficial
Influence, thus the present invention for this kind of waste water the characteristics of, design a kind of many technologies associations of efficient photocatalysis-nanofiltration-nano adsorption
With combination purification pattern, each main body module is not only single physical arrangement but collaboration mutually, plays 1+1+1 ＞'s 3
Effect.
Photocatalytic degradation organic matter is to be based on the catalyst under conditions of illumination is aided with to produce light induced electron or hole to cause
Organic matter in organic aqueous solution is able to the technology degraded.The principle of the technology is produced for semiconductor in During Illumination
The process that organic matter in water body is reduced or aoxidized by light induced electron or photohole isoreactivity intermediate product.And
The TiO in numerous materials2One of research catalysis material focus is turned into its good light stability, nonhazardous effect again.Research table
It is bright, nano-TiO2Photocatalysis technology have application conditions it is gentle, applied widely, selectivity it is small, easy to operate, be effectively reduced
The outstanding advantages such as secondary pollution.It can effectively degrade some be difficult to biodegradable poisonous and harmful organic compound (such as halogenated hydrocarbons,
Organic acid, nitro-aromatic, halogenated aromatic compound, phenols, polycyclic aromatic hydrocarbon, heterocyclic compound, organic agricultural chemicals etc.), and can be real
The permineralization of existing pollutant, the technology simultaneously can also be by aoxidizing coenzyme, destruction cell membrane (film) and inhereditary material (DNA)
The pathogenic microorganisms such as bacterium, virus are killed etc. mode.
Nanofiltration is a kind of pressure-driven membrane separating process between counter-infiltration and ultrafiltration, and the pore diameter range of NF membrane exists
Several rans, the advantage of nanofiltration is member-retaining portion mineral matter while removing most of salinity, and has comparing high
Pure water recovery rate, can at least be maintained at 1:1, not necessarily required booster pump (can be with particular demands for nanofiltration membrane water purifier in addition
Use) because the operating pressure of nanofiltration membrane water purifier is 2bar, and minimum pressure requirement of the country to tap water pipe network end
It is 2bar, that is to say, that when in use without energy consumption, Non-energy-consumption is also a big feature of nanofiltration membrane water purifier to nanofiltration membrane water purifier,
Belong to real low-carbon (LC), the water purification module of environmental protection.
Porous material has stronger absorption due to big specific surface area, uniform aperture and pore distribution
Performance, due to yield greatly, the adsorptivity to arsenic fluorine is good with selection performance, therefore is to use on the market now for the activated alumina of business
In a kind of the most widely used filtrate of Removal of Arsenic in Drinking Water fluorine, but activated alumina adsorption capacity is fairly limited, its fluorine saturation
About in 7.6mg/g or so, the saturated adsorption capacity of arsenic is 9.0mg/g to adsorption capacity, and meso-porous alumina is a kind of new many
Porous aluminum oxide, especially there is an adsorptivity and selectivity very high to arsenic fluorine, however found in experiment only meso-porous alumina to compared with
The arsenic adsorption capacity of fluoride ion of low concentration can be greatly reduced, based on this present invention using a kind of calcium analysis of mesoporous high-sequential arrangement
Aluminum oxide, greatly improves the saturated adsorption capacity and adsorption efficiency of material.
The content of the invention
First technical problem to be solved by this invention be：In view of the shortcomings of the prior art, there is provided a kind of light is urged
Change, nanofiltration, nano adsorption collaboration high efficiency water purifier, fluorine, arsenic removal rate be high, and water rate is high, and water quality is good and environmental protection and energy saving.
Second technical problem to be solved by this invention be：In view of the shortcomings of the prior art, there is provided a kind of fluorine high,
The purifying treatment method of arsenic bitter, using photocatalysis, nanofiltration, nano adsorption collaboration water purification, fluorine, arsenic removal rate are high, water rate
Height, water quality is good and environmental protection and energy saving.
To solve above-mentioned first technical problem, the technical scheme is that：
A kind of photocatalysis, nanofiltration, nano adsorption collaboration high efficiency water purifier, before the water purifier includes the one-level being sequentially communicated
Put combined filtering device, secondary light catalytic reactor, three-level nanofiltration device, level Four nano adsorption device, Pyatyi post active carbon
Adsorbent equipment.
Used as a kind of improved technical scheme, the preposition combined filtering device is provided with three-level filter core, its middle and upper part filter core
It is 5 μm of PP fabric filter elements；Middle part filter core is active carbon filter core；Bottom filter core is 1 μm of PP fabric filter element.
As a kind of improved technical scheme, nano-photo catalytic oxidant layer, institute are provided with the photo catalysis reactor inwall
State and low-pressure mercury light source is provided with photo catalysis reactor；
Used as further improved technical scheme, the nano-photo catalytic oxidant layer is the three-dimensional for being loaded with nano titanium oxide
XPM；
Used as a kind of preferred technical scheme, the low-pressure mercury light source is 15W low pressure mercury lamps.
Used as further improved technical scheme, the nano-photo catalytic oxidant layer is using dipping heat treating process load, load
Contain nano titanium oxide, PTFE, PEG400 and RO water in dipping solution, wherein nano titanium oxide concentration is 2~4g/L,
The content of PTFE and PEG400 is respectively 0.1~0.3%.
Used as a kind of preferred technical scheme, the filtering accuracy of the NF membrane of the nanofiltration device is 1nm~10nm.
As a kind of improved technical scheme, nano adsorption material is filled with the nano adsorption device；The nanometer
Sorbing material is the meso-porous alumina bead of the dopen Nano calcium of oldered array；
Used as a kind of preferred technical scheme, the doping of nanometer calcium is 5~10wt%.
Used as further improved technical scheme, the calcium analysis method of the meso-porous alumina bead of the dopen Nano calcium is
Sol-gal process：10g pluronics P123 is dissolved in 100ml absolute ethyl alcohols, 1h is stirred, then added with vigorous stirring
The nitric acid and 25g aluminium isopropoxides of 20ml 67wt%, stir 3h, then under static conditions, dry 36h for 75 DEG C in atmosphere, finally
The product for obtaining 600 DEG C of calcining 3h in air, obtain final product the meso-porous alumina bead of the dopen Nano calcium.
As a kind of improved technical scheme, cocoanut active charcoal is filled with the post active carbon adsorbent equipment.
To solve above-mentioned second technical problem, the technical scheme is that：
A kind of fluorine high, the purifying treatment method of arsenic bitter, comprise the following steps：
(1) fluorine high, arsenic bitter are carried out into prefilter through preposition combined filtering device first, sequentially passes through 5 μm of PP fibres
Dimension, activated carbon and 1 μm of PP fabric filter element, silt, colloid debris in filtering removal raw water；
(2) bitter after prefilter is entered into photo catalysis reactor, flows through the three-dimensional for being loaded with nano titanium oxide
The nano-photo catalytic oxidant layer of XPM, carries out photochemical catalytic oxidation under the irradiation of low-pressure mercury light source；
(3) by the bitter after photocatalysis by nanofiltration device salt reduction, the filtering accuracy of NF membrane is 1nm~10nm；
(4) by the water after nanofiltration salt reduction by nano adsorption device Adsorption fluorine, arsenic；The nanometer of nano adsorption device is inhaled
Enclosure material is the meso-porous alumina bead of the dopen Nano calcium of oldered array；
(5) post active carbon adsorbent equipment is eventually passed, mouthfeel is filtered and improved through cocoanut active charcoal and obtains drinking water.
Used as a kind of improved technical scheme, the nano-photo catalytic oxidant layer is using dipping heat treating process load, load leaching
Contain nano titanium oxide, PTFE, PEG400 and RO water in stain solution, wherein nano titanium oxide concentration is 2~4g/L, PTFE
Content with PEG400 is respectively 0.1~0.3%.
Used as a kind of preferred technical scheme, the low-pressure mercury light source is 15W low pressure mercury lamps.
Used as a kind of preferred technical scheme, the doping of nanometer calcium is 5~10wt%.
Used as further improved technical scheme, the calcium analysis method of the meso-porous alumina bead of the dopen Nano calcium is
Sol-gal process：10g pluronics P123 is dissolved in 100ml absolute ethyl alcohols, 1h is stirred, then added with vigorous stirring
The nitric acid and 25g aluminium isopropoxides of 20ml 67wt%, stir 3h, then under static conditions, dry 36h for 75 DEG C in atmosphere, finally
The product for obtaining 600 DEG C of calcining 3h in air, obtain final product the meso-porous alumina bead of the dopen Nano calcium.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows：
Photocatalysis of the invention, nanofiltration, nano adsorption collaboration high efficiency water purifier, including the preposition combination of one-level being sequentially communicated
Filter, secondary light catalytic reactor, three-level nanofiltration device, level Four nano adsorption device, Pyatyi post active carbon absorption dress
Put, pending raw water initially enters the preposition combined filtering device of one-level and carries out coarse filtration, the thing such as silt, colloid in removing raw water
Matter, subsequently into secondary light catalytic reactor, in photocatalysis module, high toxicity low concentration and other organic matters can be decomposed,
The microorganisms such as virus and bacteria and its secretion also can thoroughly be killed and decomposed, and eliminating may cause nanofiltration membrane pollution below
Material, improves the anti-fouling performance of NF membrane, reduces the load of NF membrane, it is ensured that the presence of membrane flux long-time stable,
At the same time the trivalent arsenic for containing in water can also be oxidized to pentavalent, reduce toxicity while improve nano adsorption module below
To the removal efficiency of arsenic (pentavalent), photocatalysis water outlet enters nanofiltration filter core, and nanofiltration desalination drop hardness simultaneously being capable of member-retaining portion ore deposit
Material, there is Water Sproading rate higher, and this is the main cause that the present invention uses nanofiltration rather than reverse osmosis membrane, but nanofiltration is to arsenic fluorine
Removal effect it is bad, therefore after nanofiltration configure nano adsorption module, nanofiltration water outlet enters back into nano adsorption module arsenic fluorine can
Efficient place to go is accessed, last water outlet enters post active carbon and ensures good mouthfeel.
Second level purification of the present invention uses photo catalysis reactor, under photocatalysis, the toxic organicses in water
Mass-energy accesses thoroughly mineralising, while the microorganism and its secretion in water also can thoroughly be killed and decomposed, and shows
Microorganism (and its secretion, colloid) and organic substance in being exactly water in the factor of influence film service life and stabilization, this
Sample photocatalysis module improves the anti-fouling performance of NF membrane while purification of water quality is ensured, reduces the load of NF membrane,
Ensure the presence of membrane flux long-time stable, substantially prolongs the service life of film, at the same time highly toxic trivalent in raw water
It is pentavalent (pentavalent arsenic toxicity is low) that arsenic can be pre-oxidized, and can greatly promote adsorption efficiency of the rearmounted nano adsorption link to arsenic.
Nano-photo catalytic oxidant layer is provided with photo catalysis reactor inwall of the present invention, the photochemical catalyst is used at dipping heat
Logos is loaded, and it is nano titanium oxide to use dipping solution, and PTFE, PEG400 and RO water are mixed, and PEG400 is used as wetting
Nanometer micropore road can be constructed while agent after heat treatment, catalysis is ensured while efficiency, the firmness of load can be lifted
The maximization of agent specific surface area and reactivity digit, and PTFE can further strengthen the firmness and whole catalyst of load
Life-span, but the amount of PTFE is more to cause the catalyst surface hydrophobicity to strengthen, therefore the present inventor is by a large amount of theoretical points
The PTFE amounts selected after analysis and experimental verification are 0.1~0.3%, can simultaneously take into account firmness, photocatalysis performance and catalyst
Hydrophily.
The third level of the present invention purification uses nanofiltration module, ensure that pure water recovery rate high (rate of recovery 50% with
On), and the beneficial mineral element of energy member-retaining portion, water outlet TDS, 100 or so, is a kind of water for being particularly suitable for the straight drink of people's health
Matter.
The nano adsorption material filled in nano adsorption device of the present invention is the mesoporous oxygen of the dopen Nano calcium of oldered array
Change aluminium bead, activated alumina is to be used for a kind of the most widely used filtrate of Removal of Arsenic in Drinking Water fluorine on the market in the prior art,
But activated alumina adsorption capacity is fairly limited, its fluorine saturated adsorption capacity about in 7.6mg/g or so, adsorb by the saturation of arsenic
Capacity is 9.0mg/g, and its arsenic to low concentration can significantly decline with adsorption capacity of fluoride ion and efficiency, and the present invention is selected
Meso-porous alumina be a kind of new Woelm Alumina, especially have to arsenic fluorine adsorptivity very high with selection, based on this
Invention has bigger specific surface area and stability, greatly using a kind of calcium analysis aluminum oxide of mesoporous high-sequential arrangement
Improve the saturated adsorption capacity and adsorption efficiency of material.
Present invention water treatment facilities at different levels mutually act synergistically, and have played the effect of 1+1+1+1+1 ＞ 5.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the embodiment of the present invention；
In figure, 1. preposition combined filtering device；11. top filter cores；12. middle part filter cores；13. bottom filter cores；2. photocatalysis
Reactor；21. nano-photo catalytic oxidant layer；22. low-pressure mercury light sources；3. nanofiltration device；4. nano adsorption device；5. rearmounted activity
Charcoal adsorbent equipment；6. booster pump.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than limitation the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, art technology
Personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Fixed scope.
As shown in drawings, a kind of photocatalysis, nanofiltration, nano adsorption collaboration high efficiency water purifier, the water purifier are included successively
The preposition combined filtering device 1 of connection, photo catalysis reactor 2, nanofiltration device 3, the absorption of nano adsorption device 4, post active carbon
Device 5.Booster pump 6 is provided between the photo catalysis reactor 2 and nanofiltration device 3.The preposition combined filtering device 1 is provided with three
Level filter core, its middle and upper part filter core 11 is 5 μm of PP fabric filter elements；Middle part filter core 12 is active carbon filter core；Bottom filter core 13 is 1 μm of PP
Fabric filter element.It is provided with the inwall of the photo catalysis reactor 2 in nano-photo catalytic oxidant layer 21, the photo catalysis reactor 2 and is set
There is low-pressure mercury light source 22.
Embodiment 1
A kind of photocatalysis, nanofiltration, nano adsorption collaboration high efficiency water purifier, the water purifier include preposition group be sequentially communicated
Close filter 1, photo catalysis reactor 2, nanofiltration device 3, nano adsorption device 4, post active carbon adsorbent equipment 5.The light
Booster pump 6 is provided between catalytic reactor 2 and nanofiltration device 3.The preposition combined filtering device 1 is provided with three-level filter core, wherein
Top filter core 11 is 5 μm of PP fabric filter elements；Middle part filter core 12 is active carbon filter core；Bottom filter core 13 is 1 μm of PP fabric filter element.Institute
State and nano-photo catalytic oxidant layer 21 is provided with the inwall of photo catalysis reactor 2, low-pressure mercury light is provided with the photo catalysis reactor 2
Source 22.The nano-photo catalytic oxidant layer 21 is the three-dimensional porous wire netting for being loaded with nano titanium oxide；The low-pressure mercury light
Source 22 is 15W low pressure mercury lamps.The filtering accuracy of the NF membrane of the nanofiltration device 3 is 1nm~10nm.The nano adsorption device
Nano adsorption material is filled with 4；The nano adsorption material is the meso-porous alumina bead of the dopen Nano calcium of oldered array.
Cocoanut active charcoal is filled with the post active carbon adsorbent equipment 5.
Embodiment 2
A kind of photocatalysis, nanofiltration, nano adsorption collaboration high efficiency water purifier, the water purifier include preposition group be sequentially communicated
Close filter 1, photo catalysis reactor 2, nanofiltration device 3, nano adsorption device 4, post active carbon adsorbent equipment 5.The light
Booster pump 6 is provided between catalytic reactor 2 and nanofiltration device 3.The preposition combined filtering device 1 is provided with three-level filter core, wherein
Top filter core 11 is 5 μm of PP fabric filter elements；Middle part filter core 12 is active carbon filter core；Bottom filter core 13 is 1 μm of PP fabric filter element.Institute
State and nano-photo catalytic oxidant layer 21 is provided with the inwall of photo catalysis reactor 2, low-pressure mercury light is provided with the photo catalysis reactor 2
Source 22.The nano-photo catalytic oxidant layer 21 is the three-dimensional porous wire netting for being loaded with nano titanium oxide；The nano-photo catalytic
Oxidant layer contains nano titanium oxide, PTFE, PEG400 and RO water using dipping heat treating process load in load dipping solution, its
Middle nano titanium oxide concentration is respectively 0.1~0.3% for the content of 2~4g/L, PTFE and PEG400；The low-pressure mercury light
Source 22 is 15W low pressure mercury lamps.The filtering accuracy of the NF membrane of the nanofiltration device 3 is 1nm~10nm.The nano adsorption device
Nano adsorption material is filled with 4；The nano adsorption material is the meso-porous alumina bead of the dopen Nano calcium of oldered array,
The doping of nanometer calcium is 5~10wt%.The calcium analysis method of the meso-porous alumina bead of the dopen Nano calcium is solidifying for colloidal sol
Glue method：10g pluronics P123 is dissolved in 100ml absolute ethyl alcohols, 1h is stirred, 20ml is then added with vigorous stirring
The nitric acid and 25g aluminium isopropoxides of 67wt%, stir 3h, and then under static conditions, 75 DEG C of drying 36h, finally obtain in atmosphere
Product in air 600 DEG C calcining 3h, obtain final product the meso-porous alumina bead of the dopen Nano calcium.The post active carbon is inhaled
Cocoanut active charcoal is filled with adsorption device 5.
Experimental comparison's example
Fluorine high, the raw water quality of arsenic bitter are：TDS：1500ppm, hardness：300ppm, fluoride：7ppm, arsenic：
50ppb, COD：5ppm, total plate count：1500cfu/ml.The raw water is sequentially passed through into following steps or without wherein one respectively
Individual step：
(1) raw water is carried out into prefilter through preposition combined filtering device first, sequentially passes through 5 μm of PP fibers, activated carbons
With 1 μm of PP fabric filter element, silt, colloid debris in filtering removal raw water；
(2) photo catalysis reactor is entered, the nanometer light for flowing through the three-dimensional porous wire netting for being loaded with nano titanium oxide is urged
Agent layer, carries out photochemical catalytic oxidation under the irradiation of 15W low-pressure mercury light sources；
(3) by nanofiltration device salt reduction, the filtering accuracy of NF membrane is 1nm~10nm；
(4) by nano adsorption device Adsorption fluorine, arsenic；The nano adsorption material of nano adsorption device is oldered array
Dopen Nano calcium meso-porous alumina bead；
(5) post active carbon adsorbent equipment is eventually passed, mouthfeel is filtered and improved through cocoanut active charcoal and obtains drinking water.
Wherein experimental example 1 is all by above-mentioned steps (1)-step (5)；
Experimental example 2 is directly entered nanofiltration device without the photo catalysis reactor of step (2) after prefilter；
Experimental example 3 is directly entered nano adsorption device without the nanofiltration device of step (3) after light-catalyzed reaction；
Experimental example 4 is directly entered post active carbon absorption dress without the nano adsorption device of step (4) after nanofiltration salt reduction
Put.
The water quality of the water obtained after the treatment of above experimental example 1- experimental examples 4 is as shown in table 1.
Table 1
In four kinds of experimental examples of the above, from the point of view of the water purifier of various combination mode is for the disposition of same water quality raw water,
Combined water purifying utensil of the present invention has a clear superiority, and water outlet remains the part mineral beneficial to human body after harmful substance is removed
Matter, is fully achieved guidelines for drinking water quality.
Experimental example 2 eliminates photocatalysis module, and influence direct on effluent quality is exactly total arsenic in water outlet, COD and bacterium colony
Number is exceeded, because photocatalysis can be to highly toxic trivalent arsenic pre-oxidation in water to pentavalent arsenic, by increasing capacitance it is possible to increase NF membrane is accommodated with after
Rice absorbent filter medium, for trivalent arsenic, can exist in water to the clearance of arsenic in the form of arsenious acid, and NF membrane removes effect to it
Rate is very low, and is still difficult to reach the index of drinking water to the removal after rearmounted absorbent filter medium to trivalent arsenic, simultaneously because
Photocatalysis module is lacked, the total plate count in water is also deteriorated with COD removal effects, this influence is not only embodied in water quality and goes out
Water number increases NF membrane according to upper, the negative effect that it more can be big to the generation of the life-span of later stage NF membrane, flux and water outlet efficiency
Load.
Experimental example 3 eliminates nanofiltration device, and TDS and the hardness of water outlet can compare high, but due to water high in water purifier
Flow velocity degree cannot ensure the enough adsorption times of filtrate (raw water arsenic Oil repellent is higher, and adsorption time can be corresponding elongated), therefore
Arsenic fluorine have it is somewhat exceeded but not serious, but because the overall adsorption capacity of filtrate is limited, the arsenic fluorine high of intaking contains
The life-span that amount directly results in nano adsorption filtrate substantially reduces；To there is COD substantially up to standard with total plate count due to light-catalysed.
After experimental example 4 saves nano adsorption module, due to NF membrane to arsenic and fluoride removal limitation, go out water outlet arsenic with
Fluoride is exceeded serious, but now arsenic is mainly the pentavalent arsenic of hypotoxicity in water.
Claims (10)
1. a kind of photocatalysis, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that：The water purifier includes connecting successively
Logical preposition combined filtering device, photo catalysis reactor, nanofiltration device, nano adsorption device, post active carbon adsorbent equipment.
2. photocatalysis as claimed in claim 1, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that：It is described preposition
Combined filtering device is provided with three-level filter core, and its middle and upper part filter core is 5 μm of PP fabric filter elements；Middle part filter core is active carbon filter core；Under
Portion's filter core is 1 μm of PP fabric filter element.
3. photocatalysis as claimed in claim 1, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that：The light is urged
Change and be provided with nano-photo catalytic oxidant layer on reactor wall, low-pressure mercury light source is provided with the photo catalysis reactor；It is described to receive
Rice photocatalyst layer is the three-dimensional porous wire netting for being loaded with nano titanium oxide.
4. photocatalysis as claimed in claim 3, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that：The nanometer
Photocatalyst layer contains nano titanium oxide, PTFE and PEG400 using dipping heat treating process load in load dipping solution, its
Middle nano titanium oxide concentration is respectively 0.1~0.3% for the content of 2~4g/L, PTFE and PEG400.
5. photocatalysis as claimed in claim 1, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that：The nanofiltration
The filtering accuracy of the NF membrane of device is 1nm~10nm.
6. photocatalysis as claimed in claim 1, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that：The nanometer
Nano adsorption material is filled with adsorbent equipment；The nano adsorption material is the mesoporous oxidation of the dopen Nano calcium of oldered array
Aluminium bead；The doping of nanometer calcium is 5~10wt%.
7. photocatalysis as claimed in claim 6, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that the doping
The calcium analysis method of the meso-porous alumina bead of nanometer calcium is sol-gal process：By 10g pluronics P123 be dissolved in 100ml without
In water-ethanol, 1h is stirred, the nitric acid and 25g aluminium isopropoxides of 20ml67wt% are then added with vigorous stirring, stir 3h, then
Under static conditions, 75 DEG C of drying 36h, the product for finally obtaining 600 DEG C of calcining 3h in air, obtain final product the doping in atmosphere
The meso-porous alumina bead of nanometer calcium.
8. photocatalysis as claimed in claim 1, nanofiltration, nano adsorption cooperate with high efficiency water purifier, it is characterised in that：It is described rearmounted
Cocoanut active charcoal is filled with absorbent charcoal adsorber.
9. a kind of fluorine high, the purifying treatment method of arsenic bitter, it is characterised in that comprise the following steps：
(1) fluorine high, arsenic bitter are carried out into prefilter through preposition combined filtering device first, sequentially passes through 5 μm of PP fibers, work
Property charcoal and 1 μm of PP fabric filter element, silt, colloid debris in filtering removal raw water；
(2) bitter after prefilter is entered into photo catalysis reactor, flows through and be loaded with the three-dimensional porous of nano titanium oxide
The nano-photo catalytic oxidant layer of wire netting, carries out photochemical catalytic oxidation under the irradiation of low-pressure mercury light source；
(3) by the bitter after photocatalysis by nanofiltration device salt reduction, the filtering accuracy of NF membrane is 1nm~10nm；
(4) by the water after nanofiltration salt reduction by nano adsorption device Adsorption fluorine, arsenic；The nano adsorption material of nano adsorption device
Expect the meso-porous alumina bead of the dopen Nano calcium for oldered array；
(5) post active carbon adsorbent equipment is eventually passed, mouthfeel is filtered and improved through cocoanut active charcoal and obtains drinking water.
10. as claimed in claim 9 fluorine high, the purifying treatment method of arsenic bitter, it is characterised in that：The nano-photo catalytic
Oxidant layer contains nano titanium oxide, PTFE and PEG400, wherein nanometer using dipping heat treating process load in load dipping solution
Titanium dioxide concentration is respectively 0.1~0.3% for the content of 2~4g/L, PTFE and PEG400.
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| CN109179820A (en) * | 2018-09-29 | 2019-01-11 | 浙江同济科技职业学院 | A kind of novel external suspension photocatalytic film water purifier |
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| CN103708510A (en) * | 2012-09-28 | 2014-04-09 | 同济大学 | Preparation method of layered alumina microspheres |
| CN103752268A (en) * | 2014-01-16 | 2014-04-30 | 广东工业大学 | Preparation method of filter core for adsorbing heavy metal, arsenic and fluorine in drinking water and application thereof |
| CN106238059A (en) * | 2016-07-13 | 2016-12-21 | 中国科学院化学研究所 | A kind of remove the composite photo-catalyst of arsenic from underwater, preparation method, method for purifying water and system |
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| CN101948150A (en) * | 2010-09-10 | 2011-01-19 | 中国科学院化学研究所 | Method for purifying water |
| CN103708510A (en) * | 2012-09-28 | 2014-04-09 | 同济大学 | Preparation method of layered alumina microspheres |
| CN103752268A (en) * | 2014-01-16 | 2014-04-30 | 广东工业大学 | Preparation method of filter core for adsorbing heavy metal, arsenic and fluorine in drinking water and application thereof |
| CN106238059A (en) * | 2016-07-13 | 2016-12-21 | 中国科学院化学研究所 | A kind of remove the composite photo-catalyst of arsenic from underwater, preparation method, method for purifying water and system |
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| CN109179820A (en) * | 2018-09-29 | 2019-01-11 | 浙江同济科技职业学院 | A kind of novel external suspension photocatalytic film water purifier |
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