CN104671537B - The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 - Google Patents
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 Download PDFInfo
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Abstract
The present invention discloses the processing method of nitrification refinement mother liquor waste water of a kind of Disperse Blue-56, comprises the steps: (1) complexometric extraction: waste water is the most acid with the mixed system regulation of extractant, carries out complexometric extraction, isolated aqueous phase I and oil phase I；(2) absorption: aqueous phase I obtains filtrate after carrying out two-stage adsorption filtration: (a) primary adsorption uses adsorbent；B () secondary absorption uses resin adsorption；(3) electrodialysis: filtrate carries out electrodialysis process, obtains dense water and fresh water.The present invention is the process technique served as theme with " extraction-absorption-concentrate ", separates the organic matter of residual in waste water, the COD removed in waste water, colourity step by step, targetedly, obtains cleaner sodium salt solution after concentration.
Description
Technical field
The present invention relates to Treating Industrial Wastewater field, be specifically related to a kind of nitrification essence of Disperse Blue-56
The processing method of mother liquor waste water processed.
Background technology
Disperse Blue-56 also known as Disperse Blue 2BLN or 1,5-dihydroxy-4,8-diamino-anthraquinone bromide with
1,8-dihydroxy-4, the mixture of 8-diamino-anthraquinone bromide, is a kind of important disperse dyes.Main
The dyeing of terylene to be used for and blend fabric, polyamide fibre, poly-vinegar fiber etc. is it can also be used to superfine fibre
Dyeing, be one of three primary colors.
The production technology of Disperse Blue-56 mainly has mercury method and non-mercury method two kinds, and wherein, mercury method is due to dirt
Dye is serious, has stopped using.After repeatedly improving, using wide technique at present is non-mercury method
Phenoxy group method.Conventional flow process is nitrification-phenoxylation-second nitrification-hydrolysis-reduction-bromination.Produce
During produce waste water about 14 strands, can apply mechanically for 5 strands, 9 strands must process.Although non-mercury method is compared
Mercury method is polluted little, and technique is also being updated, but still produces a large amount of three wastes in its production process.
The waste water produced when producing Disperse Blue-56 has high chroma, high soda acid, high COD, low B/C value etc.
Feature, therefore this wastewater toxicity is big, biodegradability is poor, it is difficult to subsequent treatment, if do not carried out effectively
Environment can be done great damage by improvement.
In existing research, ClO2(bibliography: Zhao Maojun, ClO2To reactive brilliant red k-2g and point
Dissipate the decolouring research of blue 2BLN dyestuff, Sichuan environment, volume 20 01 phase calendar year 2001；Xie Jiali, point
Dissipate the Chlorine Dioxide Oxidation decolouring research of blue 2BLN dyestuff, phase calendar year 2001 13 volume 02) and ozone (ginseng
Examine document: Song Shuan, the research of ultrasound-enhanced ozone oxidation dispersed blue dye waste water, Zhejiang Polytechnical University
Journal, 03 phase in 2006) and microorganism (bibliography: Gao Qianqian, plant vector immobilization
The research of fungal laccase decolored degradation Disperse Blue 2BLN, Jiangsu's agriculture science, the 3rd phase in 2009)
All Disperse Blue-56 waste water there is good decolorizing effect.But, several method is at conceptual phase,
Only the Dyestuff synthesis waste water of low concentration there is is decolorizing effect, to the clearance of COD below 50%,
Poor effect.
In Disperse Blue-56 production process, the nitro compounds purity after a nitrification is the highest, follow-up for improving
Products collection efficiency, refines this nitro compounds.Method be in the product after a nitrification add water,
NaOH and sodium sulfite are neutralized refined, create one waste water in subtractive process, and this gives up
Containing nitroanthraquinone sulfonic acid sodium salt, nitrous acid sodium salt and sodium sulphate etc. in water, in existing document patent also
There is no the open processing method individually processing this strand of waste water.
Summary of the invention
For the showing of processing method the most individually processing nitrification refinement mother liquor waste water of Disperse Blue-56
Shape, the invention discloses the processing method of this waste water a kind of.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 of the present invention, is with " extraction-absorption
-concentrate " the process technique served as theme, in a nitrification subtractive process of Disperse Blue-56 production technology
Produce the character of waste water, separate the organic matter of residual in waste water step by step, targetedly, remove and give up
COD in water, colourity, obtain cleaner sodium salt solution, the letter of present invention process flow process after concentration
Single, reaction condition gentleness, easy and simple to handle, effect is obvious.
The processing method of nitrification refinement mother liquor waste water of a kind of Disperse Blue-56, comprises the steps:
(1) complexometric extraction: waste water is the most acid with the mixed system regulation of extractant, is complexed
Extraction, isolated aqueous phase I and oil phase I；
(2) absorption: aqueous phase I obtains filtrate after carrying out two-stage adsorption filtration:
A () primary adsorption uses adsorbent；
B () secondary absorption uses resin adsorption；
(3) electrodialysis: filtrate carries out electrodialysis process, obtains dense water and fresh water.
Dense water is used for preparing dyestuff, chemical industry or medicine intermediate, and fresh water is used as fresh water (FW), wash water.Point
The waste water of the nitrification process for refining section generation dissipating blue 56 production processes is alkalescence, with the matter of waste water
Gauge, wherein contains the natrium nitrosum of about 1.2%, the sodium sulfite of about 0.1% and about 0.02% sulfuric acid
Sodium, additionally, waste water has remained part Anthraquinones raw materials for production and product, the dark red blackout of color.Anthracene
Quinones organic matter contains sulfonic group, and conventional efficient treating method is complexometric extraction, but this kind of extraction of routine
Take and sulfuric acid can only be used to extract.
The production of dyestuff intermediate and wastewater treatment process, often with SO2Or NOxThe generation of gas.
As preferably, described NOxGas from the nitration reaction of Disperse Blue-56 or is condensed from Disperse Blue-56
Waste water is removing the process of potassium nitrite.Additionally SO2Can come from H acid, T acid, K acid or 2-
The sulfonation process of naphthols etc..These gases are discharged in air and can produce acid rain, endanger Environmental Health,
Must reclaim.
For Appropriate application waste gas SO2Or NOx, it is ensured that the effect of complexometric extraction, described step (1)
In, in the waste water mixed system with extractant, blast SO2Or NOxRegulation system pH, controls SO2
Or NOxThe amount of blasting, keep waste water pH be adjusted to 1-3.5；
These waste gas are effectively utilized by the present invention, use SO2Or NOxGas is to Disperse Blue-56 once
Nitrification refinement mother liquor aerating wastewater, regulates its pH, carries out complexometric extraction.It is passed through SO2Or NOxGas
When body to extraction system is acidity, the Organic Sodium Salt in waste water is converted into inorganic sodium, mainly with nitrous
Acid sodium-salt or sodium sulfate salt are main, further raising natrium nitrosum or the content of sodium sulfate salt, final
To sodium-salt aqueous solution, then it is back to use in other production processes, improves the surcharge that waste water processes.
The present invention also can be with the pH of conventional means regulation waste water with the mixed system of extractant, to carry out
Complexometric extraction, in described step (1), adds mass fraction in the waste water mixed system with extractant
For sulfuric acid or nitric acid regulation system pH that mass fraction is 10-65% of 10-98%, keep waste water
PH is adjusted to 1-3.5.
In described step (1), extractant is the mixed solution of tertiary amine and diluent, tertiary amine and dilution
The volume ratio of agent is 1: 1-5；Extractant is 3: 0.5-4 with wastewater volume ratio.
Preferably, described tertiary amine is trioctylamine or trialkylamine, and diluent is sulfonated kerosene, two chloroethenes
One in alkane, toluene, n-hexane, dimethylbenzene.
As preferably, described tertiary amine is trioctylamine, and diluent is sulfonated kerosene；Wherein trioctylamine and sulphur
Changing kerosene volume ratio is 1: 1.5-2.5, and extractant is 3: 0.5-1.5 with wastewater volume ratio.
It has been investigated that, the aqueous phase I after complexometric extraction close to clarification, COD clearance more than 80%,
Be conducive to the carrying out of subsequent reactions.
Although the water outlet of complexometric extraction (aqueous phase I) water quality is preferable, but still containing trace oiliness thing, need
Carry out primary adsorption, use the trace oiliness thing in adsorbent aqueous phase I.As preferably, described
In step (a), adsorbent be activated carbon powder, activated carbon glue, bentonite, diatomite, molecular sieve,
At least one in aluminum oxide；The 0.01-2% adding the quality that quality is aqueous phase I of adsorbent.Stir
Filter after mixing 0.1-1h and separate.
The microextraction agent of residual when the purpose of addition adsorbent is sorption extraction, and remove mother further
The COD of liquid and colourity, prevent the extractant contamination and plugging polymeric adsorbent of residual in aqueous phase, impact tree
Fat adsorption effect and parsing.
In order to make full use of extractant, extractant need to be carried out back extraction and be recycled, described step
(1) liquid caustic soda that oil phase I mass fraction is 8%-13% obtained regulates its pH to 8.5-10,
40-60 DEG C of insulated and stirred back extraction 0.5-2 hour.
Back extraction terminates rear solution left standstill and separates, and the oil phase II obtained continues to do extractant, and reuse is to step
(1) in；The back extraction alkali lye circulation obtained is used as back washing agent.
Back extraction alkali lye is recycled as back washing agent, until when the viscosity increase of back extraction alkali lye, pH ＜ 8, right
Back extraction alkali lye focuses on.
In view of reality application and two factors of cost, selecting mass body fraction is the hydrogen-oxygen of 8-13%
Change sodium solution preferable as back washing agent.When concentration of sodium hydroxide solution is bigger, aqueous phase poor fluidity, no
It is beneficial to transfer and burns；When concentration of sodium hydroxide solution is less, required back extraction alkali lye amount is big, produces dirt
Water is many, is also unfavorable for burning, and the cost of burning is also greatly improved.
For removing the COD in aqueous phase I and colourity further, in described step (b), divide by quality
After the sodium hydrate aqueous solution regulation primary adsorption that number is 5-48%, the pH to 6-7 of aqueous phase I, crosses macropore
Resin adsorption, aqueous phase I is not more than 180 with the volume ratio of resin.
COD≤the 5mg/L of secondary absorption water outlet.Consider resin adsorption conditions, elute, load,
The factors such as price, (Xi'an vast space resin science and technology is limited for final selection HYA-106 macroporous absorbent resin
Company) as polymeric adsorbent.HYA-106 macroporous absorbent resin has the advantage that one is adsorption bar
Part meets the condition of aqueous phase after Absorptive complex wave；Two is that adsorbance is big, adsorbable 180 times of resin volumes filter
Liquid just reaches saturated；Three is to resolve easily, and the mass fraction that only need to use 3 times of resin volumes is 4%
Sodium hydrate aqueous solution wash-out, can resolve completely.
Use electrodialysis that secondary absorption water outlet is concentrated, obtain dense water and fresh water.
After resin adsorption, the salt content of aqueous phase improves to 8% (in terms of the quality of aqueous phase after resin adsorption)
Left and right, carries out electrodialysis to the mother liquor after resin adsorption, and its salt of concentrate assigns to 15% (with dense water quality
Meter).Dense water for obtaining electrodialysis is used, and improves the surcharge that waste water processes, described
In step (3), reinforcing body sodium salt in dense water, with dense water quality gauge, make the sodium salt content of dense water
It is 30%, in other technical process；Or, in described step (3), dense water is concentrated system
Salt is to reclaim sodium sulphate or sodium nitrate.
According to the pH of waste gas regulation mixed system in step (1), the gas blasted is different, finally
The main component obtaining dense water is different, and dense water can be back to different technical process.Use NOxAeration,
Dense water is used for preparing diazo reagent, participates in the synthesis of azo dyes, and the dense water now obtained is nitrous acid
Sodium-salt aqueous solution, can be used for the diazo-reaction of azo dyes, as Red 167, disperse blue
183, the diazo-reaction of the dyestuff such as disperse yellow 3, it is to avoid use high energy consumption evaporates unpurified salt,
Reduce energy consumption to pollute；Or, use SO2Aeration, dense water is for the essence of itrated compound of Disperse Blue-56
System.The dense water now obtained is sulfite solution.
The isolated fresh water of electrodialysis can be used for washings or the process water of Chemical Manufacture.
Present invention have the advantage that complexation extraction can absorb in other reactions steps and produce
Nitrous oxides exhaust gas and oxysulfide waste gas, sodium nitrite in aqueous solution or the sodium sulfite of generation are water-soluble
Liquid can be used for diazo-reaction or reduction reaction；Whole technical process does not produce waste gas, and method safety is high
Effect, saves the processing cost of waste water and gas, improves its surcharge processed.
Accompanying drawing explanation
Fig. 1 is the process flow figure of nitrification refinement mother liquor waste water of Disperse Blue-56 of the present invention.
Detailed description of the invention
Embodiment 1
Nitrification refinement mother liquor waste water of Disperse Blue-56 after preliminary filtration, record pH be 11.42,
COD is about 275000mg/L, in terms of the quality of waste water, containing natrium nitrosum 1.2%, sodium sulfite
0.1%, sodium sulphate 0.02%.
(1) complexometric extraction: by 300mL extractant extractant is trioctylamine: sulfonated kerosene=1:
2 (volume ratios) } stir with 100mL waste water, it is passed through nitrogen oxides NOxIts pH of gas regulation
To 3, aerated reaction stands 0.5 little layered after 1 hour, separate oil phase I and aqueous phase I.
It is dark red black that reaction terminates rear oil phase I color, and aqueous phase I is red, transparent supernatant liquid.Water
The COD=1600mg/L of phase I, in terms of the quality of aqueous phase I, the content of natrium nitrosum is 7%, nitre
The content of acid sodium is 0.1%, and the content of sodium sulphate is 0.03%.
(2) back extraction: the oil phase I after complexometric extraction is added the NaOH that mass fraction is 10%
The aqueous solution regulates its pH to 10, stratification after 45 DEG C of lower stirrings of insulation are reacted 0.5 hour, point
Go out to separate oil phase II and aqueous phase II.
Reaction terminates rear oil phase II lighter, shows slightly red；Aqueous phase II understands through detection, contains
Organic matter, salinity, moisture and NaOH.
(3) primary adsorption: add 0.1g activated carbon in 100g aqueous phase I, stir 0.5 hour
Filter, separate, filtrate achromaticity and clarification.
After testing, the COD of this filtrate is 1027.5mg/L.
(4) secondary absorption: the filtrate obtained by primary adsorption is passed through HYA-106 macroporous absorbent resin
The chromatographic column that (Xi'an Han Yu resin Science and Technology Ltd.) fills, is the hydrogen-oxygen of 30% with mass fraction
Change sodium water solution and regulate its pH to 7.
After testing, the COD=5mg/L of secondary absorption water outlet.
(5) electrodialysis: secondary absorption water outlet carries out electrodialysis process, the salt content detecting dense water is
Time 15% (with dense water quality gauge), stop electrodialysis, obtain dense water and fresh water.
After testing, the COD ＜ 5mg/L of fresh water, for colourless transparent liquid, dense water is water white transparency liquid
Body.
Comparative example 1
Keep other condition in embodiment 1 constant, remove activated carbon primary adsorption step, directly enter
Row secondary absorption, finds that in adsorption process, resin gradually dyes, and causes resin to block, and secondary absorption goes out
The COD=475.3mg/L of water.After electrodialysis, fresh water COD ＞ 5mg/L, it is impossible to meet industry
Watering condition；Fortified aqueous is coloured, is unsuitable for the synthesis material of other dyestuffs, in order to avoid polluted product,
Affect coloured light.
Comparative example 2
Keeping other condition in embodiment 1 constant, secondary absorption step uses D201 type ion to hand over
Change resin (Xi'an Han Yu resin Science and Technology Ltd.) absorption, secondary absorption water outlet COD=5mg/L.
When resin resolves, use the sodium hydrate aqueous solution that mass fraction is 4% of 6 times of resin volumes, tree
Fat is resolved the most completely.After electrodialysis, fresh water COD=5mg/L, water white transparency, dense water is nothing
Look transparent mass fraction is the salting liquid of 15%.
From comparative example 2: the effect using D201 type ion exchange resin is big with HYA-106
Macroporous adsorbent resin is identical, but it is 4% that D201 type ion exchange resin resolves used mass fraction
Sodium hydrate aqueous solution be the twice of HYA-106 macroporous absorbent resin.
Comparative example 3
Keeping other condition in embodiment 1 constant, back extraction uses mass fraction to be the hydrogen of 30%
Aqueous solution of sodium oxide, during stratification, system presents three layers, and lower floor is black mucus, and intermediate layer is
Canescence particulate material, upper strata is limpider extractant.After testing, the loss of upper strata extractant
Rate is more than 10%.
From comparative example 3: during the excessive concentration of back washing agent, back extraction poor effect, extractant loses
Amount is big.
Comparative example 4
Keeping other condition in embodiment 1 constant, back extraction uses mass fraction to be the hydrogen-oxygen of 4%
Changing sodium water solution, oil phase is obvious with aqueous phase layering, but aqueous phase is sufficiently bulky, expends NaOH water
Solution is a lot, and produced sewage quantity is the biggest.During sodium hydroxide solution just becomes after recycling 2 times
Property, become waste liquid.After testing, in waste liquid, solid content is less than 6%, reclaims the most organic cost
The highest, the cost of burning disposal is very the biggest.
Embodiment 2
Nitrification refinement mother liquor waste water of Disperse Blue-56 after preliminary filtration, record pH be 11.3,
COD is about 279050mg/L, in terms of the quality of waste water, containing natrium nitrosum 1.2%, sodium sulfite
0.1%, sodium sulphate 0.02%.
(1) complexometric extraction: { extractant is trioctylamine: sulfonated kerosene=1: 2 by 300mL extractant
(volume ratio) } stir with 100mL waste water, it is passed through SO2Gas regulation its pH to 2.5, room
Temperature reaction stood 0.5 hour after 1 hour, and layering obtains oil phase I and aqueous phase I.
It is dark red black that reaction terminates rear oil phase I color, and aqueous phase I is the transparent supernatant liquid of blush.
The COD=603mg/L of aqueous phase I, in terms of the quality of aqueous phase I, content of sodium nitrite is 7%, nitric acid
Sodium content is 0.1%, and sodium sulphate content is 0.02%.
(2) back extraction: adding mass fraction in oil phase I after complexometric extraction under 50 DEG C of insulations is
The sodium hydrate aqueous solution of 13% regulates its pH to 9, and static layering obtains oil phase II and aqueous phase II.
Reaction terminates rear oil phase II lighter, presents light yellow；Aqueous phase II understands through detection,
Containing organic matter, salinity, moisture and a small amount of NaOH.
(3) primary adsorption: add 0.1g diatomite in 100g aqueous phase I, stir 0.5 hour
Filter and separate.
Filtrate achromaticity and clarification, after testing, the COD of this filtrate is 475mg/L.
(4) secondary absorption: filtrate is passed through HYA-106 macroporous absorbent resin and fills chromatographic column, go out
Water mass fraction be 5% sodium hydrate aqueous solution regulate its pH to 6.
After testing, the COD=5mg/L of secondary absorption water outlet.
(5) electrodialysis: secondary absorption water outlet is carried out electrodialysis process, detecting dense water salt content is
Time 15% (in terms of the quality of dense water), stop electrodialysis, obtain dense water and fresh water.
After testing, the COD ＜ 5mg/L of fresh water, for colourless transparent liquid.
Comparative example 5
Keep other condition in embodiment 2 constant, remove electrodialysis step, change high energy into and evaporate
Salt.High energy evaporation obtains one-level distilled water, and its COD=5mg/L can be used for Chemical Manufacture.Gained
The solid salt arrived after testing, containing sodium sulfite 93.3%, sodium sulphate 5%, natrium nitrosum 1.5%,
Sodium nitrate 0.2% (being mass fraction above).
Comparative example 6
Keeping other condition in embodiment 2 constant, extractant uses trioctylamine and dichloroethanes with phase
Same proportions, is obtained by extraction the COD=1533mg/L of aqueous phase I.Show: sulfonated kerosene is excellent
The diluent of choosing.
Comparative example 7
Keeping other condition in embodiment 2 constant, extractant changes 3: 2 into the volume ratio of waste water,
The COD=21787mg/L of aqueous phase I is obtained by extraction, after the method described in embodiment 2 processes, two
The COD about 360mg/L of level absorption water outlet, in the sodium sulfite salting liquid being concentrated to give, impurity is higher,
Cannot be directly used to Dyestuff synthesis.The aqueous phase obtained after aqueous phase I is carried out reextraction
COD=904mg/L, reaches after subsequent treatment to use requirement.
Comparative example 7 shows: when extractant is excessive with the volume ratio of waste water, need to carry out multitple extraction.
Comparative example 8
Keep other condition in embodiment 2 constant, the pH of extraction system is adjusted to 4, extracts
To the COD=153907mg/L of aqueous phase I, after the method described in embodiment 2 processes, secondary absorption
The COD of water outlet about 10060mg/L 10 times of resin volume (wastewater volume be), is concentrated to give
In sodium sulfite salting liquid, impurity is a lot, it is impossible to be directly used in Dyestuff synthesis.Aqueous phase I is carried out secondary
The aqueous phase COD=64904mg/L obtained after extraction, still can not reach after subsequent treatment to use requirement.
Comparative example 7 shows: when during extraction, pH is too high, and extraction efficiency is remarkably decreased, and finally processes effect
Fruit is the most up to standard.
Embodiment 3
Nitrification refinement mother liquor waste water of Disperse Blue-56 after preliminary filtration, record pH be 11.3,
COD is about 279050mg/L, in terms of the quality of waste water, containing natrium nitrosum 0.8%, sodium sulfite
0.1%, sodium sulphate 0.8%.
(1) complexometric extraction: { extractant is trioctylamine: sulfonated kerosene=1: 2 by 300mL extractant
(volume ratio) } stir with 100mL waste water, with Disperse Blue-56 second nitrification waste water (sulfur-bearing
Acid about 25%) regulate its pH to 2.5, stand 0.5 hour after reaction being stirred at room temperature 0.5 hour, point
Layer obtains oil phase I and aqueous phase I.
It is dark red black that reaction terminates rear oil phase I color, and aqueous phase I is the transparent supernatant liquid of blush.
The COD=321mg/L of aqueous phase I, in terms of the quality of aqueous phase I, content of sodium nitrite is 0.2%, nitre
Acid sodium content is 0.5%, and sodium sulphate content is 2.2%.
(2) back extraction: adding mass fraction in oil phase I after complexometric extraction under 50 DEG C of insulations is
The sodium hydrate aqueous solution of 13% regulates its pH to 9, and static layering obtains oil phase II and aqueous phase II.
Reaction terminates rear oil phase II lighter, presents light yellow；Aqueous phase II understands through detection,
Containing organic matter, salinity, moisture and a small amount of NaOH.
(3) primary adsorption: add 0.1g diatomite in 100g aqueous phase I, stir 0.5 hour
Filter and separate.
Filtrate achromaticity and clarification, after testing, the COD of this filtrate is 188mg/L.
(4) secondary absorption: filtrate is passed through HYA-106 macroporous absorbent resin and fills chromatographic column, go out
Water mass fraction be 5% sodium hydrate aqueous solution regulate its pH to 6.
After testing, the COD=5mg/L of secondary absorption water outlet.
(5) electrodialysis: secondary absorption water outlet is carried out electrodialysis process, detecting dense water salt content is
Time 15% (in terms of the quality of dense water), stop electrodialysis, obtain dense water and fresh water.
After testing, the COD ＜ 5mg/L of fresh water, for colourless transparent liquid.
(6) condensing crystallizing: obtain sodium sulfate salt by after concentration, meet national standard.
Claims (10)
1. the processing method of nitrification refinement mother liquor waste water of a Disperse Blue-56, it is characterised in that comprise the steps:
(1) complexometric extraction: waste water is the most acid with the mixed system regulation of extractant, carries out complexometric extraction, isolated aqueous phase I and oil phase I；
(2) absorption: aqueous phase I obtains filtrate after carrying out two-stage adsorption filtration:
A () primary adsorption uses adsorbent；
B () secondary absorption uses resin adsorption；
(3) electrodialysis: filtrate carries out electrodialysis process, obtains dense water and fresh water.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 1, it is characterised in that in described step (1), blasts SO in the waste water mixed system with extractant2Or NOxRegulation system pH, controls SO2Or NOxThe amount of blasting, keep waste water pH be adjusted to 1-3.5；
Or, in described step (1), in the waste water mixed system with extractant, add the sulfuric acid that mass fraction is 10-98% or nitric acid regulation system pH that mass fraction is 10-65%, keep the pH of waste water to be adjusted to 1-3.5.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 1, it is characterised in that in described step (1), extractant be the volume ratio of the mixed solution of tertiary amine and diluent, tertiary amine and diluent be 1:1-5；Extractant and wastewater volume are than for 3:0.5-4.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 3, it is characterised in that described tertiary amine is trioctylamine or trialkylamine, diluent is the one in sulfonated kerosene, dichloroethanes, toluene, n-hexane, dimethylbenzene.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 4, it is characterised in that described tertiary amine is trioctylamine, diluent is sulfonated kerosene；Wherein trioctylamine and sulfonated kerosene volume ratio are 1:1.5-2.5, and extractant and wastewater volume ratio is for 3:0.5-1.5.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 1, it is characterized in that, in described step (a), adsorbent is at least one in activated carbon powder, activated carbon glue, bentonite, diatomite, molecular sieve, aluminum oxide；The 0.01-2% adding the quality that quality is aqueous phase I of adsorbent.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 1, it is characterized in that, the liquid caustic soda that oil phase I mass fraction is 8%-13% that described step (1) obtains regulates its pH to 8.5-10,40-60 DEG C of insulated and stirred back extraction 0.5-2 hour
Back extraction terminates rear solution left standstill and separates, and the oil phase II obtained continues to do extractant, in reuse to step (1)；The back extraction alkali lye circulation obtained is used as back washing agent.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 1, it is characterized in that, in described step (b), with the pH to 6-7 of aqueous phase I after the sodium hydrate aqueous solution regulation primary adsorption that mass fraction is 5-48%, crossing macroporous absorbent resin absorption, aqueous phase I is not more than 180 with the volume ratio of resin.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 2, it is characterised in that in described step (3), reinforcing body sodium salt in dense water, with dense water quality gauge, the sodium salt content making dense water is 30%；
Or, in described step (3), dense water is concentrated salt manufacturing to reclaim sodium sulphate or sodium nitrate.
The processing method of nitrification refinement mother liquor waste water of Disperse Blue-56 the most according to claim 2, it is characterised in that use NOxAeration, dense water is used for preparing diazo reagent, participates in the synthesis of azo dyes；
Or, use SO2Aeration, dense water refining for itrated compound of Disperse Blue-56.
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| CN105036428A (en) * | 2015-07-27 | 2015-11-11 | 南通昊友食品添加剂有限公司 | Method for softening treatment of water used for food additives |
| CN105060558B (en) * | 2015-08-04 | 2017-06-27 | 浙江闰土研究院有限公司 | A kind of pretreatment of Disperse Blue-56 condensation waste water and resource utilization method |
| CN105923685B (en) * | 2016-05-12 | 2019-04-12 | 浙江丝科院轻纺材料有限公司 | A kind of method that multi-alkylamine extration resin captures dyes in dyeing waste water |
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| CN111115744A (en) * | 2020-01-10 | 2020-05-08 | 浙江长征化工有限公司 | Treatment method of disperse red 60 condensed wastewater |
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| CN111268843B (en) * | 2020-02-28 | 2022-04-22 | 河北大鹏医药化工有限公司 | Process for recovering nitric acid from nitrified wastewater |
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| CN101104533B (en) * | 2007-06-05 | 2011-07-27 | 南开大学 | Method for treating waste water of H-acid production |
| CN103241885A (en) * | 2013-05-15 | 2013-08-14 | 绍兴奇彩化工有限公司 | Method for treating acid waste water of disperse dye |
| CN103408092B (en) * | 2013-08-02 | 2015-01-07 | 浙江吉华集团股份有限公司 | Treatment method for production wastewater of sulfonic acid group dye and dye intermediate of sulfonic acid group dye |
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