CN108483786A - A kind of emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body - Google Patents
A kind of emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body Download PDFInfo
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- CN108483786A CN108483786A CN201810431483.9A CN201810431483A CN108483786A CN 108483786 A CN108483786 A CN 108483786A CN 201810431483 A CN201810431483 A CN 201810431483A CN 108483786 A CN108483786 A CN 108483786A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 42
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 22
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 20
- 238000003672 processing method Methods 0.000 title claims abstract description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000013033 photocatalytic degradation reaction Methods 0.000 claims abstract description 7
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims abstract description 6
- 238000004064 recycling Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 22
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- 238000001994 activation Methods 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 9
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 229940044927 ceric oxide Drugs 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 239000012298 atmosphere Substances 0.000 claims description 5
- 238000005188 flotation Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 2
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- XKLJHFLUAHKGGU-UHFFFAOYSA-N nitrous amide Chemical compound ON=N XKLJHFLUAHKGGU-UHFFFAOYSA-N 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physical Water Treatments (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of emergency processing methods of the sudden high strength ammonia polluted by nitrogen of water body.Include the following steps：Step a) presses air and NH3Volume ratio is 10~30：1, air is passed through the stripping operation that polluted water body coupling ultrasonic wave carries out 20~50min ammonia nitrogen in high density；Modified semicoke photochemical catalyst is put into step a) treated in water body by step b), under the irradiation of ultraviolet light, carries out the reaction of 30~90min photocatalytic degradations；Water body after step b) reactions under the action of external magnetic field, is modified the recycling of semicoke photochemical catalyst by step c).Ammonia nitrogen removal frank of the present invention is high, processing cost is cheap, processing time is short, easy to operate, non-secondary pollution, has good popularizing application prospect.
Description
Technical field
The present invention relates to the emergent of technical field of sewage more particularly to a kind of sudden high strength ammonia polluted by nitrogen of water body
Processing method.
Background technology
Ammonia nitrogen refers in water with free ammonia (NH3) and ammonium ion (NH4 +) nitrogen existing for form.Ammonia nitrogen in water can be one
It is converted to nitrite under fixed condition, if long-term drinking, the nitrite in water will be combined with protein forms nitrosamine, this
It is a kind of strong carcinogen, it is totally unfavorable to health.Ammonia nitrogen is the nutrient in water body, and body eutrophication can be caused existing
It is the main oxygen consumption pollutant in water body as generating, it is toxic to fish and certain aquatiles.Ammonia nitrogen plays harm to aquatic organism
The mainly free ammonia of effect, toxicity is more several ten times larger than ammonium salt, and increases with the enhancing of alkalinity.The annual many rivers in the whole nation
The sudden accident of ammonia nitrogen pollutant discharge can all occur for the water head sites such as river, lake, reservoir, and the ammonia nitrogen of this sudden discharge is dirty
Contaminating object, often concentration is higher, and serious destruction is caused to the ecological environment of water body.
Existing ammonia nitrogen processing method is broadly divided into biological denitrificaion method and physical-chemical process.Biological denitrificaion method technical maturity is steady
It is fixed, but long there are the cycle of operation, the defects of occupation area of equipment is big, and processing cost is high, it cannot be satisfied ammonia and nitrogen pollution in water body
The emergency processing demand of factor burst Pollution.Physical-chemical process includes blow-off method, membrane separation process, the MAP precipitation method, chemical oxidation
Method and photocatalytic oxidation etc..Blow-off method is easy to operate, non-secondary pollution, but poor processing effect, and treated, and ammonia nitrogen can not
Qualified discharge；Membrane separation process carries out ammonia nitrogen removal using the selective penetrated property of film, easy to operate, and the ammonia nitrogen rate of recovery is high, without secondary
Pollution, but membrane module is easy to block, investment operating cost is high；MAP precipitation method treatment process is simple, of low cost, but heavy
Shallow lake sludge is difficult to carry out subsequent processing, be easy to cause the secondary pollution of water body；Chemical oxidization method generally use sodium hypochlorite and smelly
The chemical substances such as oxygen carry out redox reaction as the ammonia nitrogen pollutant in strong oxidizer and water body, are finally discharged with nitrogen,
High treating effect, but a large amount of adding for sodium hypochlorite is easy to make the concentration of chlorion in water body to increase, and causes the secondary dirt of water body
The problem of dye；Photocatalytic oxidation has the advantages that chemical oxidization method, while non-secondary pollution problem, but existing catalyst
It is of high cost, it is difficult to large-scale promotion application；The above-mentioned prior art is individually implemented to be difficult to meet sudden ammonia nitrogen in high density contaminant water
The emergency processing of body.
Invention content
In order to overcome the shortcoming of above-mentioned technology, the present invention to provide a kind of emergent place of sudden high strength ammonia polluted by nitrogen
Reason method has many advantages, such as that ammonia nitrogen removal frank is high, processing cost is cheap, processing time is short, easy to operate, non-secondary pollution, full
The emergency processing requirement of sufficient water pollution, has good popularizing application prospect.
The present invention is achieved by the following technical programs：
A kind of emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body, includes the following steps：
Step a) presses air and NH3Volume ratio is 10~30：1, air is passed through polluted water body coupling ultrasonic wave and is carried out
The stripping of 20~50min ammonia nitrogen in high density operates；
Modified semicoke photochemical catalyst is put into step a) treated in water body by step b), under the irradiation of ultraviolet light,
Carry out the reaction of 30~90min photocatalytic degradations；
Water body after step b) reactions under the action of external magnetic field, is modified returning for semicoke photochemical catalyst by step c)
It receives；
The preparation method of the modified semicoke photochemical catalyst is：Semicoke particle flotation is removed into volatile matter substance therein,
Then ultrapure semicoke particle is obtained after super fine crushing；The vapor that 10~30wt% is passed through at a temperature of 500~700 DEG C carries out
3~8h of high-temperature activation；Ultrapure semicoke particle after activation process is immersed in by nano ferriferrous oxide, nano-titanium dioxide, receives
In the mixed solution of rice ceria and deionized water composition, dipping 12~for 24 hours；It is washed till neutrality by deionized water, vacuum is dry
Temperature programming carries out 8~12h of calcining to 300~500 DEG C under dry, inert atmosphere protection, obtains modified semicoke photochemical catalyst.
Preferably, the ultrapure semicoke diameter of particle is 5~15um.
Preferably, the weight ratio of the nano ferriferrous oxide, nano-titanium dioxide, nano ceric oxide and deionized water
It is 1：5~15：3~8：50~100.
Preferably, the weight ratio of the ultrapure semicoke particle and mixed solution is 2~5：10.
Preferably, the power of the ultrasonic wave is 200~1000W.
Preferably, the irradiation intensity of the ultraviolet light is 2500~2800uw/cm2。
Preferably, the magnetic field intensity of the external magnetic field is 0.002~0.003T.
Preferably, the inert atmosphere is nitrogen or argon gas.
Beneficial effects of the present invention are as follows：
By the synergistic effect of stripping and photocatalysis technology, the removal efficiency of ammonia nitrogen in high density is effectively increased, when processing
Between it is short；Meanwhile the carrier using activation semicoke as photochemical catalyst, nano ferriferrous oxide, nano-titanium dioxide and nanometer two
Cerium oxide further enhances ammonia nitrogen and carries out photocatalytic degradation reaction under the action of uv light, not only greatly as active component
Amplitude reduction processing cost, and since the effect of magnetic ferroferric oxide makes catalyst is easily recycled to recycle, nothing
Secondary pollution problem.
Specific implementation mode
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are only the feature and advantage further illustrated the present invention, rather than to the claims in the present invention
Limitation.
Embodiment 1
Certain reservoir is abruptly discharged into the waste water of a large amount of high strength ammonia polluted by nitrogen, and total ammonia nitrogen content is 540mg/L, use with
Lower step carries out emergency processing：
Step a) presses air and NH3Volume ratio is 10：1, it is the super of 600W that air, which is passed through polluted water body coupled power,
Sound wave carries out the stripping operation of 50min ammonia nitrogen in high density；
Modified semicoke photochemical catalyst is put into step a) treated in water body by step b), is in irradiation intensity
2500uw/cm2Under the action of ultraviolet light, 90min photocatalytic degradation reactions are carried out；
Water body after step b) reactions in the case where magnetic field intensity is the external magnetic field of 0.002T, is modified half by step c)
The recycling of burnt photochemical catalyst；
The preparation method of the modified semicoke photochemical catalyst is：Semicoke particle flotation is removed into volatile matter substance therein,
Then ultrapure semicoke particle is obtained after super fine crushing, grain size is 5~15um；The water of 10wt% is passed through at a temperature of 500 DEG C
Steam carries out high-temperature activation 8h；Ultrapure semicoke particle after activation process is immersed in by nano ferriferrous oxide, nanometer titanium dioxide
In the mixed solution of titanium, nano ceric oxide and deionized water composition, 12h, the nano ferriferrous oxide, nano-silica are impregnated
The weight ratio for changing titanium, nano ceric oxide and deionized water is 1：5：3：50, the weight of ultrapure the semicoke particle and mixed solution
Amount is than being 1：5；It is washed till neutrality by deionized water, vacuum drying, the lower temperature programming of nitrogen atmosphere protection are calcined to 300 DEG C
12h obtains modified semicoke photochemical catalyst.
By above-mentioned steps treated polluted water body, ammonia-nitrogen removal rate 92.5%, modified semicoke photochemical catalyst
The rate of recovery be 99.1%.
Embodiment 2
Certain river is abruptly discharged into the waste water of a large amount of high strength ammonia polluted by nitrogen, and total ammonia nitrogen content is 720mg/L, use with
Lower step carries out emergency processing：
Step a) presses air and NH3Volume ratio is 20：1, it is the super of 800W that air, which is passed through polluted water body coupled power,
Sound wave carries out the stripping operation of 40min ammonia nitrogen in high density；
Modified semicoke photochemical catalyst is put into step a) treated in water body by step b), is in irradiation intensity
2600uw/cm2Under the action of ultraviolet light, 40min photocatalytic degradation reactions are carried out；
Water body after step b) reactions in the case where magnetic field intensity is the external magnetic field of 0.003T, is modified half by step c)
The recycling of burnt photochemical catalyst；
The preparation method of the modified semicoke photochemical catalyst is：Semicoke particle flotation is removed into volatile matter substance therein,
Then ultrapure semicoke particle is obtained after super fine crushing, grain size is 5~15um；The water of 20wt% is passed through at a temperature of 600 DEG C
Steam carries out high-temperature activation 5h；Ultrapure semicoke particle after activation process is immersed in by nano ferriferrous oxide, nanometer titanium dioxide
In the mixed solution of titanium, nano ceric oxide and deionized water composition, 18h, the nano ferriferrous oxide, nano-silica are impregnated
The weight ratio for changing titanium, nano ceric oxide and deionized water is 1：10：6：70, the weight of ultrapure the semicoke particle and mixed solution
Amount is than being 2：5；It is washed till neutrality by deionized water, vacuum drying, the lower temperature programming of nitrogen atmosphere protection are calcined to 400 DEG C
10h obtains modified semicoke photochemical catalyst.
By above-mentioned steps treated polluted water body, ammonia-nitrogen removal rate 93.1%, modified semicoke photochemical catalyst
The rate of recovery be 98.2%.
Embodiment 3
Certain river surface is abruptly discharged into the waste water of a large amount of high strength ammonia polluted by nitrogen, and total ammonia nitrogen content is 970mg/L, use with
Lower step carries out emergency processing：
Step a) presses air and NH3Volume ratio is 30：1, it is the super of 1000W that air, which is passed through polluted water body coupled power,
Sound wave carries out the stripping operation of 30min ammonia nitrogen in high density；
Modified semicoke photochemical catalyst is put into step a) treated in water body by step b), is in irradiation intensity
2800uw/cm2Under the action of ultraviolet light, 90min photocatalytic degradation reactions are carried out；
Water body after step b) reactions in the case where magnetic field intensity is the external magnetic field of 0.003T, is modified half by step c)
The recycling of burnt photochemical catalyst；
The preparation method of the modified semicoke photochemical catalyst is：Semicoke particle flotation is removed into volatile matter substance therein,
Then ultrapure semicoke particle is obtained after super fine crushing, grain size is 5~15um；The water of 30wt% is passed through at a temperature of 700 DEG C
Steam carries out high-temperature activation 3h；Ultrapure semicoke particle after activation process is immersed in by nano ferriferrous oxide, nanometer titanium dioxide
In the mixed solution of titanium, nano ceric oxide and deionized water composition, 18h, the nano ferriferrous oxide, nano-silica are impregnated
The weight ratio for changing titanium, nano ceric oxide and deionized water is 1：15：8：100, the ultrapure semicoke particle and mixed solution
Weight ratio is 1：2；It is washed till neutrality by deionized water, vacuum drying, the lower temperature programming of argon gas atmosphere protection are forged to 500 DEG C
8h is burnt, modified semicoke photochemical catalyst is obtained.
By above-mentioned steps treated polluted water body, ammonia-nitrogen removal rate 91.8%, modified semicoke photochemical catalyst
The rate of recovery be 98.3%.
The explanation of above example is only intended to facilitate the understanding of the method and its core concept of the invention.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (8)
1. a kind of emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body, which is characterized in that include the following steps：
Step a) presses air and NH3Volume ratio is 10~30：1, by air be passed through polluted water body coupling ultrasonic wave carry out 20~
The stripping of 50min ammonia nitrogen in high density operates；
Modified semicoke photochemical catalyst is put into step a) treated in water body by step b), under the irradiation of ultraviolet light, is carried out
30~90min photocatalytic degradations react；
Water body after step b) reactions under the action of external magnetic field, is modified the recycling of semicoke photochemical catalyst by step c)；
The preparation method of the modified semicoke photochemical catalyst is：Semicoke particle flotation is removed into volatile matter substance therein, then
Ultrapure semicoke particle is obtained after super fine crushing；The vapor that 10~30wt% is passed through at a temperature of 500~700 DEG C carries out high temperature
Activate 3~8h；Ultrapure semicoke particle after activation process is immersed in by nano ferriferrous oxide, nano-titanium dioxide, nanometer two
In the mixed solution of cerium oxide and deionized water composition, dipping 12~for 24 hours；It is washed till neutrality by deionized water, is dried in vacuo, is lazy
Temperature programming carries out 8~12h of calcining to 300~500 DEG C under property atmosphere protection, obtains modified semicoke photochemical catalyst.
2. the emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body according to claim 1, which is characterized in that institute
It is 5~15um to state ultrapure semicoke diameter of particle.
3. the emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body according to claim 1, which is characterized in that institute
The weight ratio for stating nano ferriferrous oxide, nano-titanium dioxide, nano ceric oxide and deionized water is 1：5~15：3~8：50
~100.
4. the emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body according to claim 1, which is characterized in that institute
The weight ratio for stating ultrapure semicoke particle and mixed solution is 2~5：10.
5. the emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body according to claim 1, which is characterized in that institute
The power for stating ultrasonic wave is 200~1000W.
6. the emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body according to claim 1, which is characterized in that institute
The irradiation intensity for stating ultraviolet light is 2500~2800uw/cm2。
7. the emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body according to claim 1, which is characterized in that institute
The magnetic field intensity for stating external magnetic field is 0.002~0.003T.
8. the emergency processing method of the sudden high strength ammonia polluted by nitrogen of water body according to claim 1, which is characterized in that institute
It is nitrogen or argon gas to state inert atmosphere.
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| CN113304781A (en) * | 2021-04-29 | 2021-08-27 | 万华化学集团股份有限公司 | Heterogeneous catalytic oxidation catalyst, preparation method and method for treating phenol-containing wastewater |
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