CN106608668A - Method used for purifying waste water - Google Patents
Method used for purifying waste water Download PDFInfo
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- CN106608668A CN106608668A CN201510706086.4A CN201510706086A CN106608668A CN 106608668 A CN106608668 A CN 106608668A CN 201510706086 A CN201510706086 A CN 201510706086A CN 106608668 A CN106608668 A CN 106608668A
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- sewage
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention belongs to the field of waste water treatment, and more specifically relates to a method used for purifying waste water. According to the method, waste water is contacted with a piezoelectric ceramic layer under increased pressure, wherein waste water turbidity is lower than 15NTU, and waste water COD is higher than 60mg/l. The method is capable of reducing waste water COD effectively, and reaching stable emission standards. No chemical additive is added; no second pollution is caused; operation is simple; and the method is safe, and is friendly to the environment. According to the method, the piezoelectric ceramic layer is contacted with waste water directly, no energy loss is caused; piezoelectric ceramic is high in strength, and long in service life, and possesses impact resistance, corrosion resistance, and pollution resistance, so that the method is extremely suitable for industrial application.
Description
Technical field
The present invention relates to a kind of method of purification sewage.
Background technology
With domestic economy build fast development, all trades and professions include oil, chemical industry, electric power, metallurgy,
Modern agriculture etc. obtains fast development, and the harmful substance species and content in water are more and more, and life is dirty
Water, trade effluent etc. have been badly influenced as drinking water source for the survival of mankind.For this purpose, national
Increasingly stricter wastewater pollutants discharge standard has been put into effect with local government, and implementation dynamics is also increasingly
Strictly.As standard requires that Petrochemical Enterprises sewage effluent COD is less than 50mg/L, the Changjiang river edge where Shandong
Line Petrochemical Enterprises externally discharged waste water COD requires to be less than 60mg/L.
New emission request proposes new problem to Petrochemical Enterprises, if wastewater pollutants discharge does not reach
Mark, will affect the existence of enterprise, the water outlet of current sewage farm second pond be difficult to meet country and
Local discharge standard, for this purpose, the pollutant that each Petrochemical Enterprises are just seeking different technologies to reduce sewage contain
Amount, each employing different deep treatment methods carries out tertiary sewage treatment.Such as by flocculation, sedimentation
And filtration, or processed by methods such as BAF, flocculation and filtrations, but effluent quality
Still it is difficult to stably reaching standard.
Trace it to its cause, mainly these tertiary treatment methods either physical method or biological method, only
The COD that partial suspended COD can be removed or can be biochemical, and for the compound of difficult degradation is then difficult to
Remove.Thus occur in that the application of the technologies such as activated carbon adsorption, advanced oxidation, membrance separation.Activated carbon adsorption
The shortcoming of handling process be mainly capital construction and operating cost is higher, and it is carcinogenic easily to produce nitrite etc.
Thing, to burst Pollution bad adaptability, while the Regeneration Treatment of activated carbon is difficult for enterprise, and again
Raw process causes new pollutant to produce；Application of membrane separation technology is also immature, and subject matter is the absence of height
Intensity, long-life, antipollution, high-throughout membrane material, additionally there are fouling membrane, concentration polarization and
The key issues such as cleaning difficulty.High-level oxidation technology using relatively broad, wherein, Fenton oxidation method application
It is more, however it is necessary that addition catalyst causes new pollutant, Ozonation to send out due to domestic ozone
Raw technology and technics comparing fall behind, so operating cost is too high, promote difficult.Also have these years recently
It is required for building with the method for the technical finesse difficult degradation sewage such as ultrasound wave, plasma, but these methods
Expensive equipment, and the workload of live operation maintenance is excessive.
CN102616883A discloses one kind and can smash macromolecule polyalcohol so as to become middle or small
The sewage disinfection treatment device of Molecularly Imprinted Polymer, including：Water pipe and ultrasonic vibration apparatus, the bottom of the water pipe
Portion or bottom are provided with water inlet, and the top of water pipe offers outlet, cover plate is provided with the top of water pipe；
Described ultrasonic vibration apparatus include：Ultrasonic transducer, ultrasonic transducer is arranged by connector
There is ultrasound wave vibrating bar；Connector is located in cover plate, and ultrasound wave vibrating bar is stretched in water pipe.It is pointed out
Pretreatment is carried out to sewage using the method for ultrasonic activation, the macromolecule polyalcohol in water pipe can be become
Cheng Zhong, molecular weight polymers, improve follow-up treatment effeciency physically or chemically；And by will be multiple
Apparatus for treating sewage is mutually concatenated, and forms sewage pre-treatment device, reduces delay of the sewage in single water pipe
Time, so as to improve sewage treating efficiency.
CN102674508A discloses a kind of natural minerals sewage disposal cleanser, is tied using mineral ring-type
The pyroelectricity of structure material, piezoelectricity, permanent negative ion generating function, permanent stronger far-infrared transmitting function,
Current electric fields, are urging under the conditions of thing, ultraviolet, lonizing radiation, photoelectric effect, and small temperature, pressure reduction become
Change, that is, cause the electric potential difference between crystal, ionize, that what is hit is electronically attached to water, oxygen molecule, makes
The hydroxyl for being converted into negative oxygen ion, exciting produced by atypical mineral UV, free radical makes full use of ore deposit
The dimension layer stereochemical structure of thing, is catalyzed, absorption, ion exchange, its absorption property specific activity charcoal performance
More preferably, turbidity, colourity, abnormal flavour and the heavy metal to being harmful in water that can not only be gone in eliminating water, such as：
Chromium, cadmium, nickel, zinc, hydrargyrum, iron ion and Organic substance such as phenol, Gamma Hexaochlorocyclohexane, clofenotane, ammonia nitrogen, phosphoric acid
The materials such as radical ion have a catalytic adsorption exchange interaction, the features such as absorption oil, pigment float, with natural
Mineral sewage disposal cleanser processes dyeing waste water, and up to 96%, water quality reaches industry Water circulation mark to clearance
It is accurate.Although having so many advantage, it is simultaneously not disclosed the mineral are a kind of what materials.
The content of the invention
It is an object of the invention to provide a kind of method of new purification sewage, the method is simple to operate, peace
Loopful is protected, and can effectively reduce the COD of sewage, makes up to the standard of stable emissions.
To realize object defined above, the invention provides a kind of method of purification sewage, the method includes：
Plus pressure, sewage is contacted with piezoceramics layer, wherein, turbidity of sewage<15NTU, COD of sewage is high
In 60mg/L.
The method of the present invention can effectively reduce the COD of sewage, make up to the standard of stable emissions, and
And the method for the present invention need not add any chemical addition agent, secondary pollution is not resulted in, and the present invention
Method is simple to operate, safety and environmental protection.
The method of the present invention, piezoelectric ceramics and water directly contact, energy does not lose, and ceramics have in itself
Intensity height, impact resistance, corrosion-resistant, antipollution, the advantage of life-span length, so that the method for the present invention
It is very suitable for commercial Application.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of description, with
Detailed description below is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is a kind of sectional view of the piezoelectric ceramics of embodiment of the invention；
Fig. 2 is a kind of sectional view of the piezoelectric ceramics of embodiment of the invention；
Fig. 3 is a kind of sectional view of the piezoelectric ceramics of embodiment of the invention；
Fig. 4 is a kind of sectional view of the piezoelectric ceramics of embodiment of the invention.
Description of reference numerals
1- shells；2- kernels；
Gap between R- shells and kernel.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
As it was previously stated, the invention provides a kind of method of purification sewage, the method includes：Under elevated pressure,
Sewage is contacted with piezoceramics layer, wherein, turbidity of sewage<15NTU, COD of sewage is higher than 60mg/L.
With the method for the invention it is preferred to COD of sewage is 63-80mg/L.
The sewage for meeting aforementioned turbidity requirement is capable of achieving the purpose of the present invention, the preferably turbidity of the sewage
For 4-12NTU.
With the method for the invention it is preferred to the pressurized conditions include：Pressure is 0.2-5MPa.
The method according to the invention, more preferably described pressurized conditions include：Pressure is 0.5-2MPa.
The method according to the invention, the pressure is the relative pressure counted as 0MPa with atmospheric pressure, i.e.
Relative pressure on the basis of existing atmospheric pressure.
Shape and structure to the piezoelectric ceramics of the invention is without particular/special requirement, as long as ensureing under elevated pressure,
Sewage and piezoceramics layer directly contact are capable of achieving the purpose of the present invention, for the present invention, preferred institute
Piezoelectric ceramics is stated including shell and kernel, wherein, shell is formed by the ceramics with piezoelectric effect, kernel
Formed by the ceramics without piezoelectric effect.
With the method for the invention it is preferred to the ceramic mass ratio of shell and kernel is (1-3):1.Using front
Mass ratio is stated, the COD of sewage can be further reduced.
The method according to the invention, this is capable of achieving between the shell and kernel presence or absence of gap
The purpose of invention.
In the present invention, gap can be uniformly distributed can also uneven distribution, when gap uneven distribution,
The gap refers to the ultimate range in the gap between shell and kernel and the scope of minimum range.
The method according to the invention, as long as ensureing that the piezoelectric ceramics includes the shell and the kernel,
The purpose of the present invention can be effectively realized, the present invention is wanted to the shape of the shell and kernel without special
Ask.
Specifically, a preferred embodiment of the invention, the shell can be spherical structure (bag
Include ellipsoid structure, ball structure), kernel be spherical structure (including ellipsoid structure, ball structure) or
Polyhedron (such as cube) structure.
According to the present invention, in order that the piezoelectric ceramics effectively stacking forms piezoceramics layer, it is preferably described
Shell is spherical structure, particularly preferably ball structure.
A preferred embodiment of the invention, the sectional view of the piezoelectric ceramics as shown in figure 1,
Wherein, shell 1 be ball structure, kernel 2 be ball structure, the gap between shell 1 and kernel 2
For R, shell 1 and kernel 2 centre of sphere altogether, gap R is uniformly distributed, and gap can be 0 or be not 0.
A preferred embodiment of the invention, the sectional view of the piezoelectric ceramics as shown in Fig. 2
Wherein, shell 1 be ball structure, kernel 2 be ellipsoid structure, the gap between shell 1 and kernel 2
For R, gap R uneven distributions.
A preferred embodiment of the invention, the sectional view of the piezoelectric ceramics as shown in figure 3,
Wherein, shell 1 be ellipsoid structure, kernel 2 be ellipsoid structure, the gap between shell 1 and kernel 2
For R, gap R uneven distributions.
A preferred embodiment of the invention, the sectional view of the piezoelectric ceramics as shown in figure 4,
Wherein, shell 1 be ball structure, kernel 2 be cube structure, between shell 1 and kernel 2 between
Gap is R, gap R uneven distributions.
The present invention is only the above-mentioned several mechanisms for schematically illustrating piezoelectric ceramics, except above-mentioned embodiment
Outward, remaining embodiment is also in the scope of the present invention.
A preferred embodiment of the invention, the piezoelectric ceramics is spherical structure, and a diameter of
0.8-2.5cm。
The present invention is to the ceramic species with piezoelectric effect without particular/special requirement, the pottery with piezoelectric effect
Porcelain species is used equally to the present invention, and for the present invention, the preferably described ceramics with piezoelectric effect are unleaded
Piezoelectric ceramics, preferably barium titanate-based lead-free piezoelectric ceramics, base metal niobate leadless piezoelectric ceramics, contain
Bismuth Ca-Ti ore type leadless piezoelectric ceramics, bismuth laminated leadless piezoelectric ceramic and tungsten bronze structure niobates without
One or more in lead piezoelectric ceramics, preferably barium titanate-based lead-free piezoelectric ceramics.
In the present invention, the barium titanate-based lead-free piezoelectric ceramics main species have following several：
(1)(1-x)BaTiO3-xABO3(A=Ba, Ca etc.；B=Zr, Sn, Hf, Ce etc.)；
(2)(1-x)BaTiO3-xABO3(A=K, Na etc.；B=Nb, Ta etc.)；
(3)(1-x)BaTiO3-xA0.5NbO3(A=Ca, Sr, Ba etc.)；
Wherein, in (1)-(3), x each comfortable less than 0.5, preferably 0.1-0.3.
The present invention is to the not ceramic species with piezoelectric effect without particular/special requirement, for example, clay pottery
One or more in porcelain, aluminium oxide ceramics, silicon nitride ceramics and silicon carbide ceramics, preferably clay are made pottery
Porcelain and/or aluminium oxide ceramics.
A preferred embodiment of the invention, when by sewage and piezoceramics layer in a static condition
During contact, preferred sewage is (0.1-5) with the volume ratio of piezoceramics layer:1.
A preferred embodiment of the invention, when by sewage and piezoceramics layer in a dynamic condition
During contact, the liquid hourly space velocity (LHSV) of sewage is 725-14400h-1。
In the present invention, liquid hourly space velocity (LHSV) refers to the sewage of unit interval unit volume piezoceramics layer process
Amount.
A preferred embodiment of the invention, when by sewage and piezoceramics layer in a static condition
During contact, the pressurized conditions carry out pressure realization by being passed through gas thereto, and gas is, for example, air
Or noble gases, noble gases are, for example, nitrogen.
A preferred embodiment of the invention, when by sewage and piezoceramics layer in a dynamic condition
During contact, the pressurized conditions carry out pressure realization by pump to water.
To the source of the sewage without particular/special requirement, the water quality of the preferably sewage is more than country to the present invention
The sewage of the 5-30% of qualified discharge primary standard.For example it can be the cities and towns through flocculation, after filtering
B-grade sewage treatment plant discharge water, petroleum refining sewage treatment plant discharge water, the discharge of chemical fibre sewage treatment plant
One or more of water and petro-chemical waste water treatment factory discharge water.
Flocculation of the present invention is conventional flocculation means, of the present invention to be filtered into conventional filtration mode, this
Invention is not described in detail.
Pump of the present invention is conventional pumps, and effect is to be lifted water pressure.
The present invention contacts the container for using to sewage without particular/special requirement with piezoelectric ceramics, for example can be in column
Tank body stacks the piezoceramics layer, then by water and the piezoceramics layer in columnar tank in static state
Or contacted under dynamic condition.
A kind of embodiment of the invention, the source of sewage still can not to perform first discharge standard
The town B-grade sewage treatment plant discharge water of stably reaching standard, petroleum refining sewage treatment plant discharge water, chemical fibre
Sewage Treatment Plant discharges water and is discharged one or more of water with petro-chemical waste water treatment factory, through flocculating,
Filtration removes in eliminating water after float to reduce the turbidity of water to the scope of the present invention, by pump or be passed through gas will
The pressure of water is improved, water with pressure by being fixed on tank body in piezoceramics layer connect with piezoelectric ceramics
Touch.
The method for providing of the invention is simple to operate, on-site maintenance is easy.
The method of the present invention can effectively reduce the COD of sewage, make up to the standard of stable emissions, and
And the method for the present invention need not add any chemical addition agent, secondary pollution, safety and environmental protection are not resulted in.
The method of the present invention, piezoelectric ceramics and water directly contact, energy does not lose, and ceramics have in itself
Intensity height, impact resistance, corrosion-resistant, antipollution, the advantage of life-span length, so that the method for the present invention
It is very suitable for commercial Application.
Below by embodiment for whole process is described in detail, but the claim model of the present invention
Enclose and be not restricted by the embodiments.Meanwhile, embodiment has been merely given as realizing the partial condition of this purpose,
But it is not meant to that must being fulfilled for these conditions can just reach this purpose.
Embodiment 1
Certain oil refining enterprise performs national grade one discharge standard, and COD discharge standards are 60mg/L.But its
Externally discharged waste water Jing is often exceeded, in 70-80mg/L.
COD for 70-80mg/L sewage through flocculation, filter after, turbidity is 5-10NTU；
In a static condition, under 2MPa, by the sewage and the piezoceramics layer (pressure for wherein, using
As shown in figure 1, shell is spherical structure, kernel is spherical structure to electroceramics ball sectional view, shell with it is interior
The mass ratio of core is 3：1, shell ceramics are barium titanate-based lead-free piezoelectric ceramics
(0.9BaTiO3-0.1CaZrO3, meet GB-T3388-2002 standards), kernel ceramics are aluminium oxide pottery
Porcelain, a diameter of 0.8cm of piezoelectric ceramics ball) contact, wherein, the volume ratio of sewage and piezoceramics layer
For 1：1；
After treatment, sewer COD is 30-50mg/L, stably reaches discharge standard.
Embodiment 2
Certain Treatment of Sewage Reservoir of Chemical Plant processes plant effluent COD for 65-70mg/L, the sewage after flocculation filtration
Turbidity is 4-8NTU；
In a dynamic condition, under 0.5MPa, the sewage is flowed through into piezoceramics layer and (wherein, is used
Piezoelectric ceramics ball sectional view as shown in Fig. 2 shell be spheroidal structure, kernel be elliposoidal structure,
Shell is 1 with the mass ratio of kernel：1, shell ceramics are barium titanate ceramics (0.8BaTiO3-0.2KNbO3,
Meet GB-T3388-2002 standards), kernel ceramics for clay ceramics, piezoelectric ceramics ball it is a diameter of
2.5cm) contact with piezoceramics layer, wherein, the liquid hourly space velocity (LHSV) of sewage is 4800h-1；
After treatment, sewer COD is 32-55mg/L, stably reaches discharge standard.
Embodiment 3
Certain chemical fiber factory secondary clarifier effluent COD be 61-75mg/L, bivalent manganese 1.5-2.0mg/L, turbidity
For 8-12NTU；
In a dynamic condition, under 1MPa, the sewage is flowed through into piezoceramics layer and (wherein, is used
Piezoelectric ceramics ball sectional view as shown in figure 4, shell be spheroidal structure, kernel is cube structure, outward
Shell is 2 with the mass ratio of kernel：1, shell ceramics are barium titanate ceramics (0.7BaTiO3-0.3Sr0.5NbO3,
Meet GB-T3388-2002 standards), kernel ceramics be aluminium oxide ceramics, piezoelectric ceramics ball it is a diameter of
1.90cm) contact with piezoceramics layer, wherein, the liquid hourly space velocity (LHSV) of sewage is 7200h-1；
After treatment, sewer COD is 30-45mg/L, bivalent manganese 0-0.1mg/L, is stably reached
Discharge standard.
Embodiment 4
Certain urban wastewater treatment firm COD is 65-85mg/L sewage after flocculation, filtering, and turbidity is
6-10NTU；
In a dynamic condition, under 2MPa, by the sewage and the piezoceramics layer (pressure for wherein, using
As shown in figure 1, shell is spherical structure, kernel is spherical structure to electroceramics ball sectional view, shell with it is interior
The mass ratio of core is 1.5：1, shell ceramics are barium titanate ceramics (0.7BaTiO3-0.3BaSnO3, meet
GB-T3388-2002 standards), kernel is ceramic for aluminium oxide ceramics, a diameter of 2.5cm of piezoelectric ceramics ball)
Contact, wherein, the liquid hourly space velocity (LHSV) of sewage is 14400h-1；
After treatment, sewer COD is 35-55mg/L, stably reaches discharge standard.
Embodiment 5
Method according to embodiment 1 purifies sewage, and except for the difference that, shell is 5 with the mass ratio of kernel：1；
After treatment, sewer COD is 50-60mg/L, stably reaches discharge standard.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, can be to the technical side of the present invention
Case carries out various simple variants, and these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned specific embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means.
Additionally, combination in any can also be carried out between a variety of embodiments of the present invention, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. it is a kind of purification sewage method, it is characterised in that the method includes：Under elevated pressure, by dirt
Water is contacted with piezoceramics layer, wherein, turbidity of sewage<15NTU, COD of sewage is higher than 60mg/L.
2. method according to claim 1, wherein, COD of sewage is 63-80mg/L, sewage
Turbidity is 4-12NTU.
3. method according to claim 1, wherein, the pressurized conditions include：Pressure is
0.2-5MPa, preferably 0.5-2MPa.
4. the method according to any one in claim 1-3, wherein, the piezoelectric ceramics bag
Shell and kernel are included, wherein, shell is formed by the ceramics with piezoelectric effect, and kernel is not by with piezoelectricity
The ceramics formation of effect.
5. method according to claim 4, wherein, the ceramic mass ratio of shell and kernel is
(1-3):1；Shell is spherical structure, and kernel is spherical structure or polyhedral structure.
6. method according to claim 4, wherein, the piezoelectric ceramics is spherical structure, and
A diameter of 0.8-2.5cm.
7. method according to claim 4, wherein, the ceramics with piezoelectric effect are nothing
Lead piezoelectric ceramics, preferably barium titanate-based lead-free piezoelectric ceramics, base metal niobate leadless piezoelectric ceramics,
Bismuth-containing Ca-Ti ore type leadless piezoelectric ceramics, bismuth laminated leadless piezoelectric ceramic and tungsten bronze structure niobates
One or more in leadless piezoelectric ceramics, preferably barium titanate-based lead-free piezoelectric ceramics；It is described not have
The ceramics of piezoelectric effect are in clay ceramics, aluminium oxide ceramics, silicon nitride ceramics and silicon carbide ceramics
Plant or various, preferably clay ceramics and/or aluminium oxide ceramics.
8. the method according to any one in claim 1-3, wherein,
When sewage is contacted in a static condition with piezoceramics layer, the volume of sewage and piezoceramics layer
Than for (0.1-5):1；
When sewage is contacted in a dynamic condition with piezoceramics layer, the liquid hourly space velocity (LHSV) of sewage is
725-14400h-1。
9. the method according to any one in claim 1-3, wherein,
When sewage is contacted in a static condition with piezoceramics layer, the pressurized conditions are by thereto
Being passed through gas carries out pressure realization；
When sewage is contacted in a dynamic condition with piezoceramics layer, the pressurized conditions are by pump to water
Carry out pressure realization.
10. the method according to any one in claim 1-3, wherein, the sewage be through
Flocculation, filter after town B-grade sewage treatment plant discharge water, petroleum refining sewage treatment plant discharge water,
Chemical fibre Sewage Treatment Plant to discharge water and discharge one or more of water with petro-chemical waste water treatment factory.
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| CN201510706086.4A CN106608668A (en) | 2015-10-27 | 2015-10-27 | Method used for purifying waste water |
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| CN201510706086.4A CN106608668A (en) | 2015-10-27 | 2015-10-27 | Method used for purifying waste water |
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Family
ID=58614248
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Cited By (1)
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| CN108855073A (en) * | 2018-06-29 | 2018-11-23 | 上海交通大学 | A kind of niobium lead codope, the preparation method of the titanium dioxide/titanium acid barium nano heterojunction photocatalysis agent of palladium load |
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| CN108855073A (en) * | 2018-06-29 | 2018-11-23 | 上海交通大学 | A kind of niobium lead codope, the preparation method of the titanium dioxide/titanium acid barium nano heterojunction photocatalysis agent of palladium load |
| CN108855073B (en) * | 2018-06-29 | 2021-01-01 | 上海交通大学 | Preparation method of niobium-lead co-doped palladium-loaded titanium dioxide/barium titanate nano heterojunction photocatalyst |
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Application publication date: 20170503 |