CN109574355A - A kind of method of resource of the high containing sulfate Acid Dye Wastewater of high concentration - Google Patents
A kind of method of resource of the high containing sulfate Acid Dye Wastewater of high concentration Download PDFInfo
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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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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/046—Treatment of water, waste water, or sewage by heating by distillation or evaporation under vacuum produced by a barometric column
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The present invention relates to a kind of method of resource of the high containing sulfate Acid Dye Wastewater of high concentration, include the following steps: that ammonium hydroxide is added to high-concentration acidic wastewater waste water from dyestuff adjusts pH to neutrality；Using graphite material as anode, titanium sheet electrode be cathode, waste water as electrolyte is assembled into electrolytic cell system after the suction filtration, and apply between the cathode and the anode that constant voltage carries out electrochemical oxidation and electrochemical stripping adsorbs；After taking out the anode and the cathode, electrolyte is stood, then the electrolyte is filtered；The aqueous solution of above-mentioned filtering is detected, vacuum distillation recycling ammonium sulfate is then carried out；The filter residue of above-mentioned filtering is collected, further class graphene composite material research can be carried out to it.
Description
Technical field
The present invention relates to electrochemistry and Pollutant Control Technology field more particularly to a kind of high containing sulfate of high concentration are acid
The method of resource of waste water from dyestuff.
Background technique
For many years, China's water resource quality constantly declines, and water environment is continuous worsening, the water shortage and thing caused by pollution
Therefore constantly occur, so that plant downtime, the agriculture underproduction is even had no harvest, but also is caused undesirable social influence and biggish warp
Ji loss, has seriously threatened the sustainable development of society, has threatened the existence of the mankind.
The sewage that industrial production is discharged is one of the main source of pollutant in water environment, and dyeing and printing sewage is water environment
One of one of the important pollution sources of pollution, and be known as-three big waste water (paper waste, dyeing waste water, leather-making waste water).It administers
More problems, difficulty is larger, this and the current printing and dyeing mill's small scale in China, spreads wide, and it is all to think little of science and technology etc. for poor management
It is multifactor related.Country has explicitly pointed out, these heavy polluters (such as paper mill, printing and dyeing mill, tannery) are if not upper sewage
The sewage for the treatment of facility, discharge cannot reach discharge standard, them will be forced to shut down, stop, merge and change.
Synthetic dyestuffs are widely used in many industries, such as weave, printing, leather process hides and paper industry.The dye of different cultivars
Material, is by processes such as acylation, nitrification, reduction, hydroxyethylation, esterification, condensation, bromination, diazotising, couplings from raw material to product
Various combination prepared by.The waste water that different processes generate includes product, intermediate, auxiliary agent and corresponding acid, alkali, salt.Generally
Yan Zhi, this waste water have the characteristics that " four is high " that is, pollutant concentration is high, coloration is high, sour (alkali) degree is high, toxicity is high, thus,
Processing difficulty is big.Waste water from dyestuff can cause serious aesthetics and environmental nuisance to water body is received.Most of synthetic dyestuffs are natural
It is difficult to degrade in water, and undesirable color can be brought to water body at very low concentrations, and color can subtract
Few sunlight penetration water surface, to interfere the natural vegetative activity of aquatile.In addition, some dyestuffs and its degradation intermediate have
Toxicity and carcinogenicity, and sizable harm may be caused to aquatile and the mankind.Handling this kind of waste water at present mainly has
Physisorphtion, chemical coagulation process etc..Physisorphtion is by the powder of the porous masses such as active carbon, clay or particle and waste water
Mixing, or allow waste water by the filter bed being made of its granular substance, so that the polluter in waste water is attracted to porous mass table
On face or it is filtered to remove.The method to go water removal in dissolved organic matter it is highly effective, but it cannot go water removal in colloid and
Hydrophobic dye, and adsorb after material demand carry out secondary treatment, and it only to the dye of positive ion, direct dyes,
The water-soluble dyes such as acid dyes, reactive dye have preferable absorption property.Chemical coagulation process is dosing coagulant and waste water
It is chemically reacted.The major advantage of chemical coagulation process is that process flow is simple, convenient operation and management, low equipment investment, land occupation
Area is few, very high to hydrophobic dye decolorizing efficiency；The disadvantage is that operating cost is higher, body refuse amount is more and dehydration is difficult, to hydrophilic
Property dyestuff poor processing effect.And the implementation of new environmental law and further stringent discharge standard to the waste liquid of dyestuff manufacturing enterprise at
More stringent requirements are proposed for science and engineering skill.On long terms, DYE PRODUCTION industry discharge of wastewater is larger, belongs to high pollution industry, the row
Industry is supervised increasingly strict environmental protection is faced.Therefore, exploiting economy, effective, safe and stable waste water from dyestuff Treatment process are carved not
Rong Huan.
Summary of the invention
The present invention provides a kind of high containing sulfate Acid Dye Wastewater method of resource of high concentration.The technology mainly utilizes
The physicochemical characteristic of the organic pollutants such as dyestuff, phenyl amines, is pre-processed using chemical coagulation, and then electrochemical oxidation and electrochemistry are shelled
The organic pollutants such as dyestuff, the phenyl amines in coupling synergistic effect removal waste water from absorption, and pass through the side of vacuum distillation
Formula recycles ammonium sulfate byproduct, and filter residue is collected by filtration.
In order to achieve the above object, technical scheme is as follows:
The invention proposes a kind of method of resource of the high containing sulfate Acid Dye Wastewater of high concentration, this method include with
Lower step:
1) ammonium hydroxide is added to the high containing sulfate Acid Dye Wastewater of high concentration and adjusts pH to neutrality；
2) waste water after neutralizing to step 1) filters, filtered waste water as electrolyte, using graphite rod as anode,
Titanium sheet electrode is cathode assembling into electrolytic cell system, applies constant voltage between the cathode and the anode and carries out electrochemistry
Oxidation is adsorbed with electrochemical stripping；
3) after being electrolysed, anode and cathode is taken out, electrolyte is stood, then the electrolyte is filtered；
4) solution of filtering is subjected to vacuum distillation recycling ammonium sulfate；Filtered filter residue is recycled.
The present invention has extraordinary processing to the high containing sulfate Acid Dye Wastewater of the reluctant high concentration of the prior art
Effect can handle sulfate radical (SO4 2-) content be greater than 1500mg/L, TOC be greater than 1000mg/L waste water from dyestuff.
Further, the wastewater pH being added after ammonium hydroxide is adjusted is 7.
Further, described to be assembled into before electrolytic cell system, further include following steps: being beaten graphite rod surface with sand paper
It abrades dirty.
Further, the size of the constant voltage is 6V~10V.
Further, the time of the electrochemical oxidation and electrochemical stripping absorption is 60min~120min.
Further, the electrolyte time of repose is 45min~60min.
Further, the time of the vacuum distillation is 15min~30min, temperature is 70~90 DEG C, distillation pressure is
0.01Mpa~0.03Mpa.
Compared with the prior art, the invention has the advantages that:
1) the method for the present invention is as electrochemical water treatment technology, reactor is simple, high degree of automation, operating cost are low,
Other chemical reagent are not quoted, avoid secondary pollution, and react water outlet without subsequent processing, referred to as " environmental-friendly "
Type water treatment technology.
2) by electrochemical oxidation, it can will be difficult to the dyestuff being adsorbed, aniline progress mineralizing and degrading in waste water, make its turn
Turn to the substance for being easy to adsorb.
3) ammonium hydroxide is added to adjust, can makes in water full of a large amount of ammonium sulfate ((NH4)2SO4), ammonium sulfate on the one hand can be with
It serves as electrolyte and is conducive to electrochemical oxidation and electrochemical stripping absorption；On the other hand be conducive to subsequent recovery ammonium sulfate by-product
Product.
4) in ammonium sulfate ((NH4)2SO4) as under electrolyte conditions, the characteristic contaminations such as Aniline pass through electrochemistry
Oxidation and the graphite peeled off carry out Adsorption, the ammonium sulfate product of available high-purity after vacuum distillation.
5) in ammonium sulfate ((NH4)2SO4) as under electrolyte conditions, graphite rod electrochemistry is peeled off as class grapheme material
Quality it is preferable, be conducive to its adsorb waste water in harmful substance and carry out the research of class graphene composite material.
Detailed description of the invention
Fig. 1 is the method for resource flow chart of the high containing sulfate Acid Dye Wastewater of high concentration of the present invention.
Fig. 2 is raw wastewater and the comparison diagram by the invention treated waste water.Wherein (A) is untreated effluent；(B) it is
This method treated waste water.
Fig. 3 is wastewater treatment datagram in embodiment 1.(TOC and ADMI)
Fig. 4 is wastewater treatment datagram in embodiment 2.(TOC and ADMI)
Fig. 5 is wastewater treatment datagram in embodiment 3.(TOC and ADMI)
Fig. 6 is wastewater treatment datagram in embodiment 4.(TOC and ADMI)
Fig. 7 is wastewater treatment datagram in embodiment 5.(TOC and ADMI)
Fig. 8 is the wastewater treatment data summarization figure into embodiment 5 of embodiment 1.(TOC and ADMI)
Specific embodiment
In order to better understand the present invention, below with reference to embodiment and attached drawing, the high containing sulfate acidity of high concentration is contaminated
The method of resource of material waste water is described in further detail.
Referring to Fig. 1, be the method for resource flow chart of the high containing sulfate Acid Dye Wastewater of high concentration of the present invention, including
Step:
Ammonium hydroxide is added in the high containing sulfate Acid Dye Wastewater of high concentration and adjusts pH, so that the pH of waste water is reached 6.5~7, makes
A large amount of ammonium sulfate ((NH is full of in waste water4)2SO4), on the one hand can serve as electrolyte is conducive to electrochemical oxidation to ammonium sulfate,
And in the case where ammonium sulfate is as electrolyte, the class grapheme material under electrochemical stripping has high yield (up to
16.3g/h), big lateral dimension (up to 44um), suboxides degree (C/O ratio is 17.2) and significant hole mobility
(310cm2/ V*s), these features are more advantageous to the utilization of pollutant and subsequent material in its material absorption water, work as electrolysis
When matter is other electrolyte such as sodium sulphate, potassium sulfate, the material to get off either yield or quality are peeled off all well below sulphur
The case where sour ammonium is as electrolyte；Another aspect ammonium sulfate only plays a catalyst as electrolyte, it is subsequent can be with
Recycle ammonium sulfate byproduct.
Will be stand-by after the polishing decontamination of graphite rod surface with sand paper, using above-mentioned graphite rod as anode, titanium sheet electrode be cathode, institute
Waste water as electrolyte is assembled into electrolytic cell system after stating suction filtration, and applies constant electricity between the cathode and the anode
Pressure carries out the organic matter in electrochemical oxidation and electrochemical stripping Adsorption waste water.As shown in Fig. 2, processed by this method
Waste water variation afterwards is obvious.
Specifically, the range of constant voltage is 6V~10V, and the time that electrochemical oxidation is adsorbed with electrochemical stripping is
60min~120min.
Take out anode and cathode after the completion of electrochemical oxidation and electrochemical stripping adsorb, make electrolyte stand 30min~
60min, such filter residue can slowly be deposited in bottom, convenient to be filtered to electrolyte.
The aqueous solution of above-mentioned filtering is detected, vacuum distillation recycling ammonium sulfate is then carried out.
Specifically, the temperature of distillation is 70~90 DEG C, pressure is 0.01Mpa~0.03Mpa, distillation time be 15~
30min.It is easy to be distilled into ammonium sulfate solids in this condition aqueous solution, facilitates recycling.
Embodiment 1
The high containing sulfate Acid Dye Wastewater of 500ml high concentration is taken, ammonium hydroxide is added waste water into and adjusts pH, reach the pH of waste water
To 7, sediment therein is then removed by vacuum filtration.Will be stand-by after the polishing decontamination of graphite rod surface with sand paper, with graphite
Stick is anode, titanium sheet electrode is that waste water as electrolyte is assembled into electrolytic cell system after cathode, the suction filtration.In anode and yin
The operating voltage for applying 6V between pole, continues electrochemical oxidation and electrochemical stripping absorption 120min closes power supply.Take out anode
With 45min is stood after cathode, then electrolyte is filtered, measures filtered water quality situation.Then by solution in temperature
30min is distilled under being 0.01Mpa for 70 DEG C, pressure.
Embodiment 2
The high containing sulfate Acid Dye Wastewater of 500ml high concentration is taken, ammonium hydroxide is added waste water into and adjusts pH, reach the pH of waste water
To 7, sediment therein is then removed by vacuum filtration.Will be stand-by after the polishing decontamination of graphite rod surface with sand paper, with graphite
Stick is anode, titanium sheet electrode is that waste water as electrolyte is assembled into electrolytic cell system after cathode, the suction filtration.In anode and yin
The operating voltage for applying 7V between pole, continues electrochemical oxidation and electrochemical stripping absorption 100min closes power supply.Take out anode
With 60min is stood after cathode, then electrolyte is filtered, measures filtered water quality situation.Then by solution in temperature
15min is distilled under being 0.03Mpa for 90 DEG C, pressure.
Embodiment 3
The high containing sulfate Acid Dye Wastewater of 500ml high concentration is taken, ammonium hydroxide is added waste water into and adjusts pH, reach the pH of waste water
To 7, sediment therein is then removed by vacuum filtration.Will be stand-by after the polishing decontamination of graphite rod surface with sand paper, with graphite
Stick is anode, titanium sheet electrode is that waste water as electrolyte is assembled into electrolytic cell system after cathode, the suction filtration.In anode and yin
The operating voltage for applying 8V between pole, continues electrochemical oxidation and electrochemical stripping absorption 90min closes power supply.Take out anode and
50min is stood after cathode, then electrolyte is filtered, and measures filtered water quality situation.Then it is in temperature by solution
80 DEG C, pressure be 0.02Mpa under distill 20min.
Embodiment 4
The high containing sulfate Acid Dye Wastewater of 500ml high concentration is taken, ammonium hydroxide is added waste water into and adjusts pH, reach the pH of waste water
To 7, sediment therein is then removed by vacuum filtration.Will be stand-by after the polishing decontamination of graphite rod surface with sand paper, with graphite
Stick is anode, titanium sheet electrode is that waste water as electrolyte is assembled into electrolytic cell system after cathode, the suction filtration.In anode and yin
The operating voltage for applying 9V between pole, continues electrochemical oxidation and electrochemical stripping absorption 80min closes power supply.Take out anode and
55min is stood after cathode, then electrolyte is filtered, and measures filtered water quality situation.Then it is in temperature by solution
70 DEG C, pressure be 0.03Mpa under distill 25min.
Embodiment 5
The high containing sulfate Acid Dye Wastewater of 500ml high concentration is taken, ammonium hydroxide is added waste water into and adjusts pH, reach the pH of waste water
To 7, sediment therein is then removed by vacuum filtration.Will be stand-by after the polishing decontamination of graphite rod surface with sand paper, with graphite
Stick is anode, titanium sheet electrode is that waste water as electrolyte is assembled into electrolytic cell system after cathode, the suction filtration.In anode and yin
The operating voltage for applying 10V between pole, continues electrochemical oxidation and electrochemical stripping absorption 60min closes power supply.Take out anode
With 50min is stood after cathode, then electrolyte is filtered, measures filtered water quality situation.Then by solution in temperature
25min is distilled under being 0.01Mpa for 90 DEG C, pressure.
For above embodiments after being handled by the patented method, total organic carbon (TOC) concentration falls below 600ppm or so, color
Degree (ADMI) falls below 1.5 or so, and the purity of ammonium sulfate is up to 95% after distillation.
Fig. 3 to Fig. 8 shows the water treatment effect of 1-5 of the embodiment of the present invention, within the scope of voltage 6-10V, the present invention
Electrochemical oxidation can be sufficiently carried out, while graphite-rod anode can be removed slowly by electricity, start to adsorb the harmful substance in waste water,
If voltage is lower than 6V, electrochemical oxidation can seem too long with the time that electrochemical stripping adsorbs, not be inconsistent so as to cause efficiency is too low
Close actual conditions.
The filter residue that above-described embodiment filters is collected recycling, class graphene composite material is can be used as and first leads to nitrogen doping
N element carries out high-temperature calcination, is then dissolved in n,N-Dimethylformamide (10mg/ml) as concentration graphene ink, by it in A4
It is brushed on paper and generates high conductivity graphene film (11 Ω/sq), what is manufactured on the basis of this graphene film is all solid state soft
Property supercapacitor have 11.3mF/cm2The outstanding high rate performance of high area capacitance, 5000mV/s.The material is as class graphene
Composite material has very big application market and research space.
The method of resource of this high containing sulfate Acid Dye Wastewater of high concentration first passes through addition ammonium hydroxide adjusting pH and obtains
Contain a large amount of (NH4)2SO4Waste water, then by electrochemical oxidation and electrochemical stripping absorption waste water is handled, finally
Distillation is filtered to electrolyte.
The method of resource high treating effect of this high containing sulfate Acid Dye Wastewater of high concentration, simple process, cost
Low, reaction condition is mild, and low energy consumption, is suitable for industrialization large-scale application, without secondary pollution.On the one hand it is turned into electrochemistry oxygen
Organic pollutant poisonous and harmful in waste liquid is subjected to mineralizing and degrading with lower, on the other hand removing generates largely under electrochemical action
It is organic by dyestuff, phenyl amines in the further Adsorption waste liquid of its high absorption property etc. with class graphene property material
Pollutant.Under electrochemical oxidation and the coupling synergistic effect of electrochemical stripping absorption, most organic pollutants in waste liquid
It can remove, especially the characteristic contaminations such as phenyl amines.To obtain the ammonium sulfate product of high-purity, obtained by vacuum distillation
Byproduct it is best in quality, have very big utility value.
Meanwhile the class graphene composite wood that the method for resource of this high containing sulfate Acid Dye Wastewater of high concentration generates
Expect the application market and research space that have very big.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (8)
1. a kind of method of resource of the high containing sulfate Acid Dye Wastewater of high concentration, which is characterized in that this method includes following
Step:
1) ammonium hydroxide is added to the high containing sulfate Acid Dye Wastewater of high concentration and adjusts pH to neutrality；
2) waste water after neutralizing to step 1) filters, and filtered waste water is as electrolyte, using graphite rod as anode, titanium sheet
Electrode is cathode assembling into electrolytic cell system, applies constant voltage between the cathode and the anode and carries out electrochemical oxidation
It is adsorbed with electrochemical stripping；
3) after being electrolysed, anode and cathode is taken out, electrolyte is stood, then the electrolyte is filtered；
4) solution of filtering is subjected to vacuum distillation recycling ammonium sulfate；Filtered filter residue is recycled.
2. the method for resource of the high containing sulfate Acid Dye Wastewater of high concentration according to claim 1, which is characterized in that
Sulfate radical (the SO of the high containing sulfate Acid Dye Wastewater of the high concentration4 2-) content is greater than 1500mg/L, TOC is greater than
1000mg/L。
3. the method for resource of the high containing sulfate Acid Dye Wastewater of high concentration according to claim 1, which is characterized in that
The wastewater pH being added after ammonium hydroxide is adjusted is 7.
4. the method for resource of the high containing sulfate Acid Dye Wastewater of high concentration according to claim 1, which is characterized in that
It is described to be assembled into before electrolytic cell system, further include following steps: graphite rod surface being polished with sand paper and is decontaminated.
5. the method for resource of the high containing sulfate Acid Dye Wastewater of high concentration according to claim 1, which is characterized in that
The size of the constant voltage is 6V~10V.
6. the method for resource of the high containing sulfate Acid Dye Wastewater of high concentration according to claim 1, which is characterized in that
The time of the electrochemical oxidation and electrochemical stripping absorption is 60min~120min.
7. the method for resource of the high containing sulfate Acid Dye Wastewater of high concentration according to claim 1, which is characterized in that
The electrolyte time of repose is 30min~60min.
8. the method for resource of the high containing sulfate Acid Dye Wastewater of high concentration according to claim 1, which is characterized in that
The time of the vacuum distillation is 15min~30min, temperature is 70~90 DEG C, distillation pressure is 0.01Mpa~0.03Mpa.
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| CN113429038A (en) * | 2021-08-11 | 2021-09-24 | 厦门紫金矿冶技术有限公司 | Method for recycling ketoxime production wastewater |
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