CN102464408A - Method for treating nitrobenzene waste water - Google Patents
Method for treating nitrobenzene waste water Download PDFInfo
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- CN102464408A CN102464408A CN2011103207471A CN201110320747A CN102464408A CN 102464408 A CN102464408 A CN 102464408A CN 2011103207471 A CN2011103207471 A CN 2011103207471A CN 201110320747 A CN201110320747 A CN 201110320747A CN 102464408 A CN102464408 A CN 102464408A
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- waste water
- nitrobenzene
- engineering bacteria
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Abstract
The invention discloses a method for treating nitrobenzene waste water and belongs to the technical field of sewage treatment of environmental protection. The method comprises the following steps of: compounding a compound medicament by adopting the following components in percentage by mass: 5 to 20 percent of nitrobenzene engineering bacterium, 30 to 70 percent of an inorganic oxidant and 20 to 30 percent of a catalyst; adding the compounded compound medicament into the nitrobenzene waste water with the concentration of 10 to 1,000 mg/L, wherein the mass ratio of the added compound medicament to the waste water ranges from 1: 100 to 1: 1,000; continuously stirring the mixture at a rotating speed of more than or equal to 250 r/min for 10 to 30 minutes, aerating for 0.5 to 2 hours, and then performing air floatation treatment; and scraping off residues floating on the surface of the waste water by using a scraper, wherein the nitrobenzene concentration in the waste water can be reduced from 10 to 1,000 mg/L to below 0.5 mg/L; and the nitrobenzene removal rate is up to over 99.9 percent. The method has the characteristics of simplicity in operation, economical efficiency, high efficiency and the like, and is applicable to elimination of nitrobenzene in the waste water; furthermore, precipitations are avoided, and secondary pollution is prevented.
Description
Technical field
The present invention relates to the processing of the nitrobenzene-containing waste water that medicine, agricultural chemicals, dyestuff, explosive and other Chemicals produce, also applicable to the removal of hazardous and noxious substances high-performance bios such as aniline.
Background technology
The technology of domestic and international application in nitrobenzene waste water is handled mainly contains method and technologies such as desorption method, biological filter process, Fe-Cu catalytic reduction method, iron reduction method, three-dimensional electrode electrolysis at present; Desorption method is the suspended substance of removing earlier in the waste water; To filtrate in temperature is under 20～250BV/h condition with flow for 2 ℃～45 ℃, and absorption effluent is made desorbing agent with formaldehyde or ethanol; With the bad temper thomel regeneration of having adsorbed oil of mirbane; Though this method can realize the reuse of desorbing agent, but operating process is loaded down with trivial details, desorption efficient was not high when temperature was higher.The main effect of iron carbon reduction method is to utilize iron under acidic conditions, and the reductibility of utilizing iron makes it to be converted into amino to the reaction of nitro generation surface reduction.This method is no problem on principle, but also is not very desirable in the engineering practice, should be the reaction needed acidic conditions, and the iron consumption is big, thereby sludge quantity is also big, and problem such as harden in addition.
The method of domestic treatment of Nitrobenzene mainly concentrates on waste water and chemical industry processing aspect; It is said that for example notification number is CN1168865, name is called " method of wastewater treatment of oil of mirbane shortening system PARA AMINOPHENOL " patent, and oil of mirbane shortening system PARA AMINOPHENOL (PAP) technology is mainly used in wastewater treatment, at first takes evaporation concentration control waste water proportion to appropriate value; Make the PAP supersaturation and separate out; After with activated carbon treatment, be water white transparency and evaporate the steam condensate that, the filtrating that leaches behind the PAP is handled with ydrogen peroxide 50, separates out most of organism; Use activated carbon decolorizing again, remove remaining almost whole organism; Notification number is said for the CN101514044 name is called " a kind of method of treating low-concentration nitrobenzene waste water by means of three-phase fluidization " patent; It is characterized in that in the three-phase water processing reactor, for concentration less than the 500mg/L nitrobenzene waste water, with an organic solvent and ozone; Carry out extracting and enriching-ozonation treatment simultaneously; Though this method of wastewater treatment is efficient, low consumption, can only handle the nitrobenzene waste water of lower concentration, be unfavorable for the industry popularization; It is said that notification number is CN101811769A, name is called " method of a kind of liquid/liquid two-phase ozone Oxidation Treatment parachloronitrobenzene waste water " patent; For containing lower concentration parachloronitrobenzene waste water; Use nontoxic inertia perfluoro solvent as organic solvent, under water/organic solvent two-phase fluidization state, carry out parachloronitrobenzene in extracting and enriching-ozone oxidation degraded water body simultaneously; This method efficient low-consume, easy to operate is not removed the waste water that contains high nitrobenzene but be suitable for.
Summary of the invention
The objective of the invention is for overcoming the deficiency of prior art, a kind of nitrobenzene waste water treatment process that is applicable to high density is provided.The present invention has simple to operate, and economical and efficient does not have deposition and produces, and can not cause secondary pollution, is applicable to that the oil of mirbane ionic is removed in the waste water.
The technical scheme that the present invention adopts is; This method adopts oil of mirbane engineering bacteria, an inorganic oxidizer and catalyzer to be re-dubbed compound, and its mass percent is respectively: oil of mirbane engineering bacteria 5%～20%, an inorganic oxidizer 30%～70%, catalyzer 20%～30%.
Described oil of mirbane engineering bacteria is one or both in tryptophan gene engineering bacteria, Perchlorobenzene engineering bacteria, hexanitrobenzene engineering bacteria, colibacillus engineering, 2CNB and the 3CNB engineering bacteria.
Described an inorganic oxidizer is one or both in calcium superoxide, Na2Fe04, the potassium ferrate.
Described catalyzer is one or both compositions in chromium trioxide, nickel oxide, the Vanadium Pentoxide in FLAKES.
By the total mass per-cent that accounts for compound: tryptophan gene engineering bacteria 5%～10%; Perchlorobenzene engineering bacteria 5%～15%, hexanitrobenzene engineering bacteria 10%～20%, colibacillus engineering 5%～10%; 2CNB engineering bacteria 10%～20%, 3CNB engineering bacteria 10%～20%; Calcium superoxide 30%～50%, Na2Fe04 30%～60%, potassium ferrate 30%～50%; Chromium trioxide 20%～25%, nickel oxide 20%～30%, Vanadium Pentoxide in FLAKES 25%～30%.
Nitrobenzene waste water treatment process of the present invention has lower volatility in use; The recombiner that only needs aforementioned proportion is joined joins in the nitrobenzene waste water that concentration is 10～1000mg/L, and the compound of adding and the mass ratio of waste water are 1:100～1:1000, constantly stir to be not less than the 250r/min rotating speed; Churning time is 10～30min; Aeration 0.5～2 hour carries out air supporting again and handles, and the residue that will float over the waste water surface with slag scraper strikes off.The inventive method can make the nitro phenenyl concentration in the waste water drop to below the 0.5mg/L from 10～1000mg/L, and the oil of mirbane clearance is up to more than 99.9%.
Embodiment
The present invention adopts oil of mirbane engineering bacteria, an inorganic oxidizer and catalyzer to be re-dubbed compound, and its mass percent does; Oil of mirbane engineering bacteria 5%～20%, an inorganic oxidizer 30%～70%, catalyzer 20%～30%.
Described oil of mirbane engineering bacteria is one or both in tryptophan gene engineering bacteria, Perchlorobenzene engineering bacteria, hexanitrobenzene engineering bacteria, colibacillus engineering, 2CNB and the 3CNB engineering bacteria.
Described an inorganic oxidizer is one or both in calcium superoxide, Na2Fe04, the potassium ferrate.
Described catalyzer is one or both in chromium trioxide, nickel oxide, the Vanadium Pentoxide in FLAKES.
By the total mass per-cent that accounts for compound: tryptophan gene engineering bacteria 5%～10%; Perchlorobenzene engineering bacteria 5%～15%, hexanitrobenzene engineering bacteria 10%～20%, colibacillus engineering 5%～10%; 2CNB engineering bacteria 10%～20%, 3CNB engineering bacteria 10%～20%; Calcium superoxide 30%～50%, Na2Fe04 30%～60%, potassium ferrate 30%～50%; Chromium trioxide 20%～25%, nickel oxide 20%～30%, Vanadium Pentoxide in FLAKES 25%～30%.
The method of treatment of high concentration nitrobenzene waste water is: the recombiner that aforementioned proportion is joined joins in the nitrobenzene waste water that concentration is 10～1000mg/L; The compound that adds and the mass ratio of waste water are 1:100～1:1000; Constantly stir to be not less than the 250r/min rotating speed, churning time is 10～30min, aeration 0.5～2 hour; Carry out air supporting again and handle, the residue that will float over the waste water surface with slag scraper strikes off.The inventive method can make the nitro phenenyl concentration in the waste water drop to below the 0.5mg/L from 10～1000mg/L.
Instance 1
To with the compound of Perchlorobenzene engineering bacteria 5%, potassium ferrate 30%, calcium superoxide 40% and nickel oxide 25% proportioning, certain drugmaker's waste water be handled by accounting for compound total mass per-cent; Nitro phenenyl concentration is 897mg/L in the waste water; The recombiner that adds and the mass ratio of waste water are 1:826, stir 20min, aeration 1 hour with the 280r/min rotating speed; Carrying out air supporting again handles; The residue that will float over the waste water surface with slag scraper strikes off, and nitro phenenyl concentration is 0.3mg/L in the processed waste water, and clearance is up to 99.97%.
Instance 2
Will be by accounting for compound total mass per-cent, the compound of tryptophan gene engineering bacteria 10%, hexanitrobenzene engineering bacteria 5%, calcium superoxide 65% and chromium trioxide 20% proportioning is handled certain wastewater from chemical industry; Nitro phenenyl concentration is 500mg/L in the waste water; The compound that adds and the mass ratio of waste water are 1:729, stir 25min, aeration 1.5 hours with the 290r/min rotating speed; Carrying out air supporting again handles; The residue that will float over the waste water surface with slag scraper strikes off, and handling the back nitro phenenyl concentration is 0.05mg/L, and clearance is up to 99.99%.
Instance 3
Will be by accounting for compound total mass per-cent, the compound of hexanitrobenzene engineering bacteria 20%, Na2Fe04 50% and nickel oxide 30% proportioning is handled certain pharmacy waste water; Nitro phenenyl concentration is 382mg/L in the waste water, and the compound of adding and the mass ratio of waste water are 1:500, stirs 10min with the 310r/min rotating speed; Aeration 0.5 hour carries out air supporting again and handles, and the residue that will float over the waste water surface with slag scraper strikes off; Handling the back nitro phenenyl concentration is 0.05mg/L, and clearance is up to 99.98%.
Instance 4
Will be by accounting for compound total mass per-cent, the compound of 2CNB engineering bacteria 10%, potassium ferrate 70% and chromium sesquioxide 20% proportioning is handled certain pharmacy waste water; Nitro phenenyl concentration is 186mg/L in the waste water; The compound that adds and the mass ratio of waste water are 1:328, stir 18min, aeration 0.9 hour with the 310r/min rotating speed; Carrying out air supporting again handles; The residue that will float over the waste water surface with slag scraper strikes off, and handling the back nitro phenenyl concentration is 0.04mg/L, and clearance is up to 99.97%.
Instance 5
Will be by accounting for compound total mass per-cent, the compound of 3CNB engineering bacteria 15%, calcium superoxide 30%, Na2Fe04 30% and nickel oxide 25% proportioning is handled certain pharmacy waste water; Nitro phenenyl concentration is 87mg/L in the waste water; The compound that adds and the mass ratio of waste water are 1:258, stir 11min, aeration 1 hour with the 330r/min rotating speed; Carrying out air supporting again handles; The residue that will float over the waste water surface with slag scraper strikes off, and handling the back nitro phenenyl concentration is 0.03mg/L, and clearance is up to 99.97%.
Instance 6
Will be by accounting for compound total mass per-cent, the compound of Perchlorobenzene engineering bacteria 15%, colibacillus engineering 10%, calcium superoxide 45% and Vanadium Pentoxide in FLAKES 30% proportioning is handled certain wastewater from chemical industry; Nitro phenenyl concentration is 20mg/L in the waste water; The compound that adds and the mass ratio of waste water are 1:100, stir 0.5min, aeration 0.5 hour with the 330r/min rotating speed; Carrying out air supporting again handles; The residue that will float over the waste water surface with slag scraper strikes off, and handling the back nitro phenenyl concentration is 0.007mg/L, and clearance is up to 99.97%.
Claims (4)
1. the method for a treatment of Nitrobenzene waste water; It is characterized in that: this method adopts oil of mirbane engineering bacteria, an inorganic oxidizer and catalyzer to be re-dubbed compound; Its mass percent is respectively: oil of mirbane engineering bacteria 5%～20%, an inorganic oxidizer 30%～70%, catalyzer 20%～30%.
2. the method for a kind of treatment of Nitrobenzene waste water according to claim 1 is characterized in that: described oil of mirbane engineering bacteria is one or both in tryptophan gene engineering bacteria, Perchlorobenzene engineering bacteria, hexanitrobenzene engineering bacteria, colibacillus engineering, 2CNB and the 3CNB engineering bacteria.
3. the method for a kind of treatment of Nitrobenzene waste water according to claim 1 is characterized in that: described an inorganic oxidizer is to get one or both in calcium superoxide, Na2Fe04, the potassium ferrate.
4. the method for a kind of treatment of Nitrobenzene waste water according to claim 1 is characterized in that: described catalyzer is one or both compositions in chromium trioxide, nickel oxide, the Vanadium Pentoxide in FLAKES.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103207471A CN102464408A (en) | 2011-10-20 | 2011-10-20 | Method for treating nitrobenzene waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103207471A CN102464408A (en) | 2011-10-20 | 2011-10-20 | Method for treating nitrobenzene waste water |
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| CN102464408A true CN102464408A (en) | 2012-05-23 |
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| CN2011103207471A Pending CN102464408A (en) | 2011-10-20 | 2011-10-20 | Method for treating nitrobenzene waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214188A (en) * | 2017-06-02 | 2017-09-29 | 常州大学 | A kind of method of BHC in potassium ferrate collaboration calper calcium peroxide degraded soil elution liquid |
| CN111908584A (en) * | 2020-07-08 | 2020-11-10 | 同济大学 | Multifunctional ferrate composite medicament and application thereof in water pollution treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1492939B1 (en) * | 2002-03-25 | 2008-05-14 | Priester, Lamar E., III | In situ biodegradation of subsurfacecontaminants by injection of phosphate |
| CN101319194A (en) * | 2007-10-24 | 2008-12-10 | 大连理工大学 | Rhodotorula mucilaginosa with novel metabolic characteristic and application of the same in biodegradation |
| CN102070237A (en) * | 2010-11-26 | 2011-05-25 | 常州大学 | COD degradation agent for removing sulfamide from industrial wastewater |
-
2011
- 2011-10-20 CN CN2011103207471A patent/CN102464408A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1492939B1 (en) * | 2002-03-25 | 2008-05-14 | Priester, Lamar E., III | In situ biodegradation of subsurfacecontaminants by injection of phosphate |
| CN101319194A (en) * | 2007-10-24 | 2008-12-10 | 大连理工大学 | Rhodotorula mucilaginosa with novel metabolic characteristic and application of the same in biodegradation |
| CN102070237A (en) * | 2010-11-26 | 2011-05-25 | 常州大学 | COD degradation agent for removing sulfamide from industrial wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 盛连喜 等: "硝基苯类化合物微生物降解研究进展", 《应用生态学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214188A (en) * | 2017-06-02 | 2017-09-29 | 常州大学 | A kind of method of BHC in potassium ferrate collaboration calper calcium peroxide degraded soil elution liquid |
| CN111908584A (en) * | 2020-07-08 | 2020-11-10 | 同济大学 | Multifunctional ferrate composite medicament and application thereof in water pollution treatment |
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Application publication date: 20120523 |