CN106673253B - A kind of processing method of chlor-alkali industrial waste water catalysis oxidation - Google Patents
A kind of processing method of chlor-alkali industrial waste water catalysis oxidation Download PDFInfo
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- CN106673253B CN106673253B CN201611153529.2A CN201611153529A CN106673253B CN 106673253 B CN106673253 B CN 106673253B CN 201611153529 A CN201611153529 A CN 201611153529A CN 106673253 B CN106673253 B CN 106673253B
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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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The present invention relates to a kind of processing methods of chlor-alkali industrial waste water catalysis oxidation, and described steps are as follows: 1) adjusting pH: after the pH of waste water is first transferred to 9-10 in wastewater disposal basin, waste water being precipitated, is filtered；2) it the pretreatment of waste water: is added into waste water after sodium hydroxide and oxidant and is precipitated, filtered；3) catalytic treatment of waste water: catalyst is added into waste water and is catalyzed, and after waste water is stirred 15-20 minutes at 30-55 DEG C, it stirs 17-19 minutes after being warming up to 56-65 DEG C, waste water is passed through into flotation tank and is filtered after stirring 1-3 minutes, adjust pH to the 6-7 of waste water；4) waste water is passed through into preseparator and carries out natural subsidence, and waste water is precipitated, is filtered；The present invention provides a kind of processing methods of chlor-alkali industrial waste water catalysis oxidation, by carrying out catalytic oxidation treatment to chlor-alkali industrial waste water, can effectively remove the substance in waste water, and by substance handle it is up to standard after discharge, and make that treated waste water reach national grade one discharge standard.
Description
Technical field
The present invention discloses a kind of processing method of chlor-alkali industrial waste water catalysis oxidation, belongs to sewage treatment field.
Background technique
Chlorine industry is most basic one of chemical industry, Corvic, caustic soda, hydrochloric acid.The chlorine-alkali products such as liquid chlorine
All it is national economy and the essential substance of people's lives, is occupied an important position in national economy and national defense construction, but is same
When chlor-alkali industry environmental pollution be also bigger.Therefore, chlor-alkali can generate during processing rich in peroxidating
The discharge of the waste water of sodium, waste water not only causes a large amount of wastes of water resource, also results in environment and human lives very big
Harm, need to carry out the waste water generated after production pretreatment and by wastewater treatment it is up to standard after discharge, it should be minimized
To the adverse effect of environment.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of processing side of chlor-alkali industrial waste water catalysis oxidation
Method, to solve problems of the prior art.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of processing method of chlor-alkali industrial waste water catalysis oxidation, it is characterised in that: described steps are as follows: 1) pH is adjusted:
After the pH of waste water is first transferred to 9-10 in wastewater disposal basin, waste water is precipitated, is filtered；2) pretreatment of waste water: into waste water
Sodium hydroxide and oxidant is added, stirs 15-20 minutes, the waste water after reaction is passed through in sedimentation basin and precipitated, filtered；
The molar ratio of the sodium hydroxide and oxidant is 1:15-25；3) catalytic treatment of waste water: into waste water be added catalyst into
Row catalysis, and after waste water is stirred 15-20 minute at 30-55 DEG C, it is stirred 17-19 minutes after being warming up to 56-65 DEG C, general
Waste water is passed through into flotation tank and filters after stirring 1-3 minutes, adjusts pH to the 6-7 of waste water；4) waste water is passed through to pre-separation
Natural subsidence is carried out in device, and waste water is precipitated, is filtered.
As an improvement of the present invention, the production technology of the oxidant is as follows: (1), will using L-type molecular sieve as carrier
L-type molecular sieve is put into monoxone modified aminoresin, polyacrylamide, water and is mixed, and carries out standing 18-20 hours
Afterwards, taking-up is dried；(2) by molecular sieve be put into sodium hypochlorite, sodium chlorate carry out reaction 5-8 hours after, into mixed liquor with
60m/s stops being passed through chlorine after being passed through chlorine 20-25 minutes；(3) mixed liquor is passed through into electrolytic cell and carries out energization 10-25
After minute, L-type molecular sieve is taken out naturally dry 3-4 hours；(4) molecular sieve is put into and is ultrasonically treated into Vltrasonic device
It is taken out after 5-10 minutes, stands 30 minutes；(5) molecular sieve is put into drying unit and carries out drying 6-9 hours, can be prepared by
Oxidant.
As an improvement of the present invention, monoxone modified aminoresin in the step (1), polyacrylamide, water
Volume ratio is 3:2:8.
As an improvement of the present invention, the mass ratio of sodium hypochlorite and sodium chlorate is 1:5 in the step (2).
As an improvement of the present invention, the production technology of the catalyst is as follows: (1) by sawmilling, active carbon, electrolysis stone
It is after 2:2:1 is stirred, to be put into after being stirred 20-25 hours into sodium hydroxide solution and take out with weight ratio, carries out quiet
Set 5-6 hours naturally dries；(2) mixture is passed through into electrolytic cell, after carrying out energization 20-30 minutes, mixture is taken out
Naturally dry 3-4 hours；(3) mixture is put into the mixing of polyacrylamide, edta edta, polyethyleneimine
In liquid, after being warming up to 60-65 DEG C, taken out after being stirred 20-27 hours, stand 8-9 hours after, by mixture be placed again into
It in mixed liquor, and is stirred at 40-50 DEG C 6-10 hours, takes out and stand 7-10 hour；(4) mixture is put into baking
In equipment for drying, and mixture is carried out to carry out drying 10-16 hours at 105-110 DEG C, catalyst can be obtained.
As an improvement of the present invention, polyacrylamide, edta edta, polyethylene in the step (3)
The volume ratio 1:4:7 of the mixed liquor of imines.
Due to using the above technology, the present invention compared with the prior art, is had the advantage that as follows:
The present invention provides a kind of processing methods of chlor-alkali industrial waste water catalysis oxidation, by carrying out to chlor-alkali industrial waste water
Catalytic oxidation treatment, can effectively remove the impurity in waste water, and by impurity treatment it is up to standard after discharge, and make that treated
Waste water reaches national grade one discharge standard；
After the pH of waste water is adjusted in the present invention, waste water can be made significantly more efficient and sodium hydroxide and oxidant
It is reacted, and the substance in waste water is aoxidized, catalyst is added in the waste water after being oxidized, and make the chlorine in oxidant
Acetic acid modified aminoresin, polyacrylamide can preferably with sodium hydroxide, polyacrylamide, the ethylenediamine tetraacetic in catalyst
Acetic acid EDTA, polyethyleneimine are mixed, and the mixture with high oxidative can be generated, so as to effectively improve waste water
The rate of catalysis oxidation can effectively increase the oxidation efficiency to useless impurities in water with the speed of accelerated oxidation；After catalysis oxidation
Waste water be passed through into preseparator and carry out natural subsidence, effectively increase the separative efficiency of useless impurities in water, can effectively mention
The separating rate of high waste water can be such that waste water separates more fast and effective；
In the present invention by L-type molecular sieve be carrier, L-type molecular sieve is put into monoxone modified aminoresin, polypropylene
Stood in the mixture of amide and water, and resin absorbed, by L-type molecular sieve and sodium hypochlorite, sodium chlorate into
Row reaction, and chlorine is passed through into mixed liquor, being passed through for chlorine makes constantly to generate bubble in water, can make sodium hypochlorite, chloric acid
Sodium is more effectively adsorbed on L-type molecular sieve, effectively increases the adsorption efficiency of L-type molecular sieve；L-type molecular sieve warp after absorption
Energization and ultrasound are crossed, and is adsorbed on oxidation material preferably on L-type molecular sieve；
After mixing sawmilling, active carbon, electrolysis stone in the present invention, after being reacted with sodium hydroxide solution, it will mix
It closes object to be powered, the mixture after energization is carried out instead with polyacrylamide, edta edta, polyethyleneimine
It answers, and is stood after being absorbed, drying, can make effectively to accelerate sawmilling, active carbon, the adsorptivity for being electrolysed stone, can make to mix
Object is significantly more efficient to be attached to sawmilling, active carbon, is electrolysed on stone, is effectively increased and has been catalyzed efficiency, electrolysis stone can be mentioned effectively
The high efficiency being powered can make mixture is significantly more efficient to be attached to sawmilling, on active carbon；
The method of the present invention raw material is easy to get, is low in cost, simple process, easily to operate, have good environmental benefit and
Economic benefit can reach 96.4% or more with the degradation rate of sodium hypochlorite in waste water, reach to the absorptivity of chlorine in waste water
50.1% or more, significant effect.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated.
Embodiment 1:
A kind of processing method of chlor-alkali industrial waste water catalysis oxidation, it is characterised in that: described steps are as follows: 1) pH is adjusted:
After the pH of waste water is first transferred to 9 in wastewater disposal basin, waste water is precipitated, is filtered；2) it the pretreatment of waste water: is added into waste water
Sodium hydroxide and oxidant stir 20 minutes, the waste water after reaction are passed through in sedimentation basin and precipitated, filtered；The hydrogen
The molar ratio of sodium oxide molybdena and oxidant is 1:15；3) catalytic treatment of waste water: being added catalyst into waste water and be catalyzed, and
After waste water is stirred 15 minutes at 55 DEG C, is stirred 17 minutes after being warming up to 65 DEG C, waste water is passed through into flotation tank simultaneously
Stirring is filtered after 3 minutes, adjusts the pH to 6 of waste water；4) waste water is passed through into preseparator and carries out natural subsidence, and by waste water
It precipitated, filtered.
The production technology of the oxidant is as follows: (1) using L-type molecular sieve as carrier, L-type molecular sieve being put into monoxone
Modified aminoresin, polyacrylamide are mixed in water, are carried out after standing 20 hours, taking-up is dried；(2) molecular sieve is put
Enter after carrying out reaction 5 hours to sodium hypochlorite, sodium chlorate, is passed through after chlorine 25 minutes into mixed liquor with 60m/s and stops being passed through
Chlorine；(3) mixed liquor is passed through into electrolytic cell and is powered after ten minutes, it is small that L-type molecular sieve is taken out naturally dry 4
When；(4) molecular sieve is put into be ultrasonically treated into Vltrasonic device and is taken out after five minutes, stand 30 minutes；(5) by molecular sieve
It is put into drying unit and carries out drying 9 hours, can be prepared by oxidant.
Monoxone modified aminoresin in the step (1), polyacrylamide, water volume ratio be 3:2:8.
The mass ratio of sodium hypochlorite and sodium chlorate is 1:5 in the step (2).
The production technology of the catalyst is as follows: (1) being that 2:2:1 is stirred with weight ratio by sawmilling, active carbon, electrolysis stone
It after mixing, is put into after being stirred 25 hours into sodium hydroxide solution and takes out, carry out standing 6 hours naturally dries；It (2) will mixing
Object is passed through into electrolytic cell, is powered after twenty minutes, mixture is taken out naturally dry 4 hours；(3) by mixture be put into
Polyacrylamide, edta edta, polyethyleneimine mixed liquor in, after being warming up to 60 DEG C, be stirred 27 hours
After take out, stand 8 hours after, mixture is placed again into mixed liquor, and is stirred at 50 DEG C 6 hours, take out it is quiet
Set 10 hours；(4) mixture is put into drying unit, and mixture is carried out to carry out drying 10 hours at 105 DEG C,
Catalyst can be obtained.
Polyacrylamide in the step (3), edta edta, polyethyleneimine mixed liquor volume ratio 1:
4:7.
Waste water is after catalytic oxidation treatment, and the removal rate of COD is 49.9% in waste water.
Embodiment 2:
A kind of processing method of chlor-alkali industrial waste water catalysis oxidation, it is characterised in that: described steps are as follows: 1) pH is adjusted:
After the pH of waste water is first transferred to 10 in wastewater disposal basin, waste water is precipitated, is filtered；2) pretreatment of waste water: add into waste water
Enter sodium hydroxide and oxidant, stirs 15 minutes, the waste water after reaction is passed through in sedimentation basin and precipitated, filtered；It is described
The molar ratio of sodium hydroxide and oxidant is 1:25；3) catalytic treatment of waste water: being added catalyst into waste water and be catalyzed,
And be stirred waste water after twenty minutes at 30 DEG C, it is stirred 19 minutes after being warming up to 56 DEG C, waste water is passed through into flotation tank
And filtered after stirring 1 minute, adjust the pH to 7 of waste water；4) waste water is passed through into preseparator and carries out natural subsidence, and will given up
Water is precipitated, is filtered.
The production technology of the oxidant is as follows: (1) using L-type molecular sieve as carrier, L-type molecular sieve being put into monoxone
Modified aminoresin, polyacrylamide are mixed in water, are carried out after standing 18 hours, taking-up is dried；(2) molecular sieve is put
Enter after carrying out reaction 8 hours to sodium hypochlorite, sodium chlorate, chlorine is passed through with 60m/s into mixed liquor and stops being passed through after twenty minutes
Chlorine；(3) mixed liquor is passed through into electrolytic cell and is carried out after being powered 25 minutes, it is small that L-type molecular sieve is taken out naturally dry 3
When；(4) molecular sieve is put into be ultrasonically treated into Vltrasonic device and is taken out after ten minutes, stand 30 minutes；(5) by molecular sieve
It is put into drying unit and carries out drying 6 hours, can be prepared by oxidant.
Monoxone modified aminoresin in the step (1), polyacrylamide, water volume ratio be 3:2:8.
The mass ratio of sodium hypochlorite and sodium chlorate is 1:5 in the step (2).
The production technology of the catalyst is as follows: (1) being that 2:2:1 is stirred with weight ratio by sawmilling, active carbon, electrolysis stone
It after mixing, is put into after being stirred 25 hours into sodium hydroxide solution and takes out, carry out standing 5 hours naturally dries；It (2) will mixing
Object is passed through into electrolytic cell, carries out after being powered 30 minutes, mixture is taken out naturally dry 3 hours；(3) by mixture be put into
Polyacrylamide, edta edta, polyethyleneimine mixed liquor in, after being warming up to 65 DEG C, be stirred 20 hours
After take out, stand 9 hours after, mixture is placed again into mixed liquor, and is stirred at 40 DEG C 10 hours, take out it is quiet
Set 7 hours；(4) mixture is put into drying unit, and mixture is carried out to carry out drying 10 hours at 110 DEG C,
Catalyst can be obtained.
Polyacrylamide in the step (3), edta edta, polyethyleneimine mixed liquor volume ratio 1:
4:7.
Waste water is after catalytic oxidation treatment, and the removal rate of COD is 50.5% in waste water.
Embodiment 3:
A kind of processing method of chlor-alkali industrial waste water catalysis oxidation, it is characterised in that: described steps are as follows: 1) pH is adjusted:
After the pH of waste water is first transferred to 9 in wastewater disposal basin, waste water is precipitated, is filtered；2) it the pretreatment of waste water: is added into waste water
Sodium hydroxide and oxidant stir 18 minutes, the waste water after reaction are passed through in sedimentation basin and precipitated, filtered；The hydrogen
The molar ratio of sodium oxide molybdena and oxidant is 1:20；3) catalytic treatment of waste water: being added catalyst into waste water and be catalyzed, and
After waste water is stirred 19 minutes at 30 DEG C, is stirred 18 minutes after being warming up to 65 DEG C, waste water is passed through into flotation tank simultaneously
Stirring is filtered after 1 minute, adjusts the pH to 6 of waste water；4) waste water is passed through into preseparator and carries out natural subsidence, and by waste water
It precipitated, filtered.
The production technology of the oxidant is as follows: (1) using L-type molecular sieve as carrier, L-type molecular sieve being put into monoxone
Modified aminoresin, polyacrylamide are mixed in water, are carried out after standing 20 hours, taking-up is dried；(2) molecular sieve is put
Enter after carrying out reaction 5 hours to sodium hypochlorite, sodium chlorate, is passed through after chlorine 25 minutes into mixed liquor with 60m/s and stops being passed through
Chlorine；(3) mixed liquor is passed through into electrolytic cell and is powered after twenty minutes, it is small that L-type molecular sieve is taken out naturally dry 3
When；(4) molecular sieve is put into be ultrasonically treated into Vltrasonic device and is taken out after ten minutes, stand 30 minutes；(5) by molecular sieve
It is put into drying unit and carries out drying 6 hours, can be prepared by oxidant.
Monoxone modified aminoresin in the step (1), polyacrylamide, water volume ratio be 3:2:8.
The mass ratio of sodium hypochlorite and sodium chlorate is 1:5 in the step (2).
The production technology of the catalyst is as follows: (1) being that 2:2:1 is stirred with weight ratio by sawmilling, active carbon, electrolysis stone
It after mixing, is put into after being stirred 20 hours into sodium hydroxide solution and takes out, carry out standing 5 hours naturally dries；It (2) will mixing
Object is passed through into electrolytic cell, is powered after twenty minutes, mixture is taken out naturally dry 4 hours；(3) by mixture be put into
Polyacrylamide, edta edta, polyethyleneimine mixed liquor in, after being warming up to 65 DEG C, be stirred 20 hours
After take out, stand 9 hours after, mixture is placed again into mixed liquor, and is stirred at 40 DEG C 10 hours, take out it is quiet
Set 7 hours；(4) mixture is put into drying unit, and mixture is carried out to carry out drying 10 hours at 110 DEG C,
Catalyst can be obtained.
Polyacrylamide in the step (3), edta edta, polyethyleneimine mixed liquor volume ratio 1:
4:7.
Waste water is after catalytic oxidation treatment, and the removal rate of COD is 50.8% in waste water.
Above-described embodiment is only the preferred technical solution of the present invention, and is not construed as limitation of the invention, the present invention
Protection scope should with claim record technical solution, including claim record technical solution in technical characteristic etc.
It is protection scope with alternative, i.e., equivalent replacement within this range is improved, also within protection scope of the present invention.
Claims (5)
1. a kind of processing method of chlor-alkali industrial waste water catalysis oxidation, it is characterised in that: described steps are as follows: 1) adjust pH:
After the pH of waste water is first transferred to 9-10 in wastewater disposal basin, waste water is precipitated, is filtered；2) pretreatment of waste water: add into waste water
Enter sodium hydroxide and oxidant, stirs 15-20 minutes, the waste water after reaction is passed through in sedimentation basin and precipitated, filtered；Institute
The molar ratio for stating sodium hydroxide and oxidant is 1:15-25；3) catalytic treatment of waste water: catalyst is added into waste water and carries out
Catalysis, and after waste water is stirred 15-20 minutes at 30-55 DEG C, it stirs 17-19 minutes, will give up after being warming up to 56-65 DEG C
Water is passed through into flotation tank and filters after stirring 1-3 minutes, adjusts pH to the 6-7 of waste water；4) waste water is passed through to preseparator
Middle carry out natural subsidence, and waste water precipitated, is filtered；
The production technology of the oxidant is as follows: (1) using L-type molecular sieve as carrier, L-type molecular sieve being put into modified to monoxone
Amino resins, polyacrylamide are mixed in water, are carried out after standing 18-20 hours, taking-up is dried；(2) molecular sieve is put into
Stop after carrying out reaction 5-8 hours to sodium hypochlorite, sodium chlorate, after being passed through chlorine 20-25 minutes into mixed liquor with 60m/s logical
Enter chlorine；(3) after mixed liquor being passed through into electrolytic cell and carrying out energization 10-25 minutes, L-type molecular sieve is taken out into naturally dry
3-4 hours；(4) molecular sieve is put into Vltrasonic device and taken out after being ultrasonically treated 5-10 minutes, stand 30 minutes；(5)
Molecular sieve is put into drying unit and carries out drying 6-9 hours, can be prepared by oxidant.
2. a kind of processing method of chlor-alkali industrial waste water catalysis oxidation according to claim 1, it is characterised in that: the oxygen
The production technology of agent, monoxone modified aminoresin in step (1), polyacrylamide, water volume ratio be 3:2:8.
3. a kind of processing method of chlor-alkali industrial waste water catalysis oxidation according to claim 1, it is characterised in that: the oxygen
The production technology of agent, the mass ratio of sodium hypochlorite and sodium chlorate is 1:5 in step (2).
4. a kind of processing method of chlor-alkali industrial waste water catalysis oxidation according to claim 1, which is characterized in that described useless
The production technology of catalyst is as follows in the processing method of water catalytic oxidizing: (1) being with weight ratio by sawmilling, active carbon, electrolysis stone
It after 2:2:1 is stirred, is put into after being stirred 20-25 hours into sodium hydroxide solution and takes out, carry out standing 5-6 hours certainly
So dry；(2) mixture is passed through into electrolytic cell, after carrying out energization 20-30 minutes, mixture is taken out into naturally dry 3-4
Hour；(3) by mixture be put into polyacrylamide, edta edta, polyethyleneimine mixed liquor in, be warming up to
It after 60-65 DEG C, takes out after being stirred 20-27 hours, after standing 8-9 hours, mixture is placed again into mixed liquor, and
It is stirred at 40-50 DEG C 6-10 hours, takes out and stand 7-10 hour；(4) mixture is put into drying unit, and
Mixture is carried out to carry out drying 10-16 hours at 105-110 DEG C, catalyst can be obtained.
5. a kind of processing method of chlor-alkali industrial waste water catalysis oxidation according to claim 4, it is characterised in that: described to urge
The production technology of agent, polyacrylamide in step (3), edta edta, polyethyleneimine mixed liquor volume
Compare 1:4:7.
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| CN101844828B (en) * | 2010-05-27 | 2011-12-14 | 南京工业大学 | Treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water |
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