CN105800709A - Treating agent and method for dye wastewater - Google Patents
Treating agent and method for dye wastewater Download PDFInfo
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- CN105800709A CN105800709A CN201610348951.7A CN201610348951A CN105800709A CN 105800709 A CN105800709 A CN 105800709A CN 201610348951 A CN201610348951 A CN 201610348951A CN 105800709 A CN105800709 A CN 105800709A
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- waste water
- dyestuff
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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
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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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
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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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a treating agent for dye wastewater.The treating agent includes a component A and a component B.The component A is nanometer silver hydrosol, and the component B is a reducing agent solution.The invention further discloses a treating method for the dye wastewater.The treating method includes the following steps that the component A and the component B are added into the dye wastewater for reacting, and the volume ratio of the added reducing agent solution to the added nanometer silver hydrosol is 1:(0.5-2).The ingredients of the treating agent for the dye wastewater are simple and easy to obtain; the treating method for the dye wastewater adopts a direct feeding method and is mild in reaction condition, and has economical efficiency; the treating agent for the dye wastewater and the treating method for the dye wastewater are combined and are suitable for wastewater containing reactive dye and/or acid dye, and a new treating method is provided for the dye wastewater.
Description
Technical field
The present invention relates to the processing method of the inorganic agent of a kind of waste water from dyestuff and waste water from dyestuff.
Background technology
Along with the development of human economy and society, environmental problem especially water pollutes the harm to human body and also increasingly receives publicity.Waste water from dyestuff is one of main source of current water pollution, with organic dye difficult degradation, easily accumulate in water, serious threat ecological environment and human health, having multiple physico-chemical process and biological method to can apply in dye wastewater treatment, the method that industrial dye waste water conventional both at home and abroad processes includes: biological degradation method, chemical oxidization method, electrochemical process etc..
Acid stain and reactive dye for complicated component, biological degradation method is poor to its treatment effect, chemical oxidization method is most commonly used that Fenton oxidation technology at present, there is oxidability deficiency in this technology, water outlet contains the problems such as iron ion, and electrochemical process is in practical operation, and unit power consumption and electrode material make consumption big, make it develop and application is restricted, all there is the limitation of technology in above-mentioned several method, therefore, the processing method of waste water from dyestuff also needs to further expansion.
Summary of the invention
The invention provides the inorganic agent of a kind of waste water from dyestuff and processing method, in order to expand the processing method of current waste water from dyestuff, the treatment effect for the reactive dye in waste water from dyestuff and acid stain is especially prominent.
In order to solve above-mentioned technical problem, the technical scheme is that
The inorganic agent of a kind of waste water from dyestuff, including component A and B component, described component A is nano-silver hydrosol, and described B component is reductant solution.
As preferably, the reducing agent in described reductant solution is sodium borohydride, and solvent is water.
As preferably, described nano-silver hydrosol can adopt multiple method to prepare, and the present invention adopts biological reducing method to prepare, and concrete preparation process is as follows:
Step 1): tea polyphenols, silver nitrate and sodium hydroxide are configured to aqueous solution, the concentration 2.5～7.5g/L of described tea polyphenols solution respectively, and the concentration of described silver nitrate solution is 0.01～0.03mol/L, and the concentration of described sodium hydroxide solution is 2～6g/L；
Step 2): silver nitrate solution is added in tea polyphenols solution and mix, and with sodium hydroxide solution regulate mixed solution pH value be 5～9, preparing described nano-silver hydrosol, wherein, the volume ratio of described tea polyphenols solution and described silver nitrate solution is 1～10:1～10.
As preferably, in described reductant solution, the concentration of reducing agent is 0.1～0.3mol/L, and in described nano silver colloidal sol, the content of nanometer silver is 50～200 μ g/L.
Present invention also offers the processing method of a kind of waste water from dyestuff, its step is as follows:
To described containing reactive dye and/or Acid Dye Wastewater adding above-mentioned component A and B component reacts, the described reductant solution added and the volume ratio of described nano silver colloidal sol are 1:0.5～2, described component A and B component can individually feed intake, it is also possible to mixed material feeding.
As preferably, the reaction temperature of the processing method of described waste water from dyestuff is 20 DEG C～80 DEG C.
As preferably, the response time of the processing method of described waste water from dyestuff is 15min～60min.
As preferably, described waste water from dyestuff includes reactive orange and/or Acid Red B.
Compared with prior art, the invention have the advantages that the composition of the inorganic agent of waste water from dyestuff of the present invention is simple and easy to get, the processing method of waste water containing dye of the present invention, adopt the method directly fed intake, reaction condition is gentle, has economy, and the inorganic agent of described waste water from dyestuff is in conjunction with the processing method of described waste water from dyestuff, it is applicable to the waste water containing reactive dye and/or acid stain, new processing method is provided for waste water from dyestuff.
Accompanying drawing explanation
The absorption spectrum curve figure that Fig. 1 is Acid Red B dyestuff of the present invention (uses NaBH4Process)；
Fig. 2 is the absorption spectrum curve figure (inorganic agent using described waste water from dyestuff processes) of Acid Red B dyestuff of the present invention；
The absorption spectrum curve figure that Fig. 3 is active orange dye of the present invention (uses NaBH4For processing)；
Fig. 4 is the absorption spectrum curve figure (inorganic agent using described waste water from dyestuff processes) of active orange dye of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention rather than the range of application of the restriction present invention.
Embodiment 1
The preparation method of nano-silver hydrosol:
(1) preparation of tea polyphenols solution: the 2.50g tea polyphenol extract thing accurately weighed, is dissolved in the pure water of 500mL, and preparation concentration is the tea polyphenols solution of 5g/L, uses the filter membrane of 0.45 μm that described tea polyphenols solution is filtered, and removes impurity；
(2) preparation of silver nitrate solution: accurately weigh silver nitrate solid 1.079g, be dissolved in the pure water of 500mL, the silver nitrate that preparation concentration is 0.02mol/L holds liquid；
(3) preparation of sodium hydroxide solution: accurately weigh 2.00g sodium hydrate solid, is dissolved in 500mL pure water, and preparation concentration is the sodium hydroxide solution of 4.0g/L；
(4) preparation of nano-silver hydrosol: accurately weigh 10mL tea polyphenols solution to conical flask, add the silver nitrate solution of 10mL, mixed solution sodium hydroxide solution regulates pH value=7, at the uniform velocity magnetic agitation 30 minutes under 40 DEG C of conditions, obtain described nano-silver hydrosol, described nano-silver hydrosol is through ethanol and pure water cyclic washing, then is centrifuged to obtain nano-Ag particles with dried.
Embodiment 2
The preparation of the inorganic agent of described waste water from dyestuff
(5) preparation of component A: the nano-silver hydrosol adopting above-mentioned preparation the nano-silver hydrosol adopting pure water adjustment concentration to be 100 μ g/L, concrete operation method is as follows: adds pure water in nano-silver hydrosol, and stirs by magnetic agitation；
(6) preparation of B component: accurately weigh 0.3783g sodium borohydride (NaBH4), it is dissolved in 100mL water, preparation concentration is the sodium borohydride solution of 0.1mol/L；
Embodiment 3
The inorganic agent of described waste water from dyestuff processes the waste water containing Acid Red B dyestuff and the processing method of the waste water containing active orange dye respectively.
1. prepared by sample
(7) preparation of dye solution: accurately weigh Acid Red B dyestuff 0.050g, is dissolved in 1L pure water, and preparation concentration is the Acid Red B dye solution of 50mg/L；Same method is adopted to prepare active orange dye solution；
2. experiment
(8) accurately weighing described Acid Red B dye solution 3mL, the above-mentioned nano-silver hydrosol of the described sodium borohydride solution and 0.1mL that add 0.1mL wherein reacts；
(9) accurately weighing described active orange dye solution 3mL, the above-mentioned nano-silver hydrosol of the described sodium borohydride solution and 0.1mL that add 0.1mL wherein reacts.
(10) use ultraviolet-visible spectrophotometer to record Acid Red B dye solution described in the differential responses stage and the absorption spectrum of described active orange dye solution respectively, and be depicted as absorption spectrum curve.
Comparative example 1
The processing method of sodium borohydride deoxidization, degradation Acid Red B waste water from dyestuff and active orange dye waste water respectively.
1. prepared by sample
(11) preparation of dye solution: accurately weigh Acid Red B dyestuff 0.050g, is dissolved in 1L water, and preparation concentration is the Acid Red B dye solution of 50mg/L；Same method is adopted to prepare active orange dye solution；
(12) preparation of sodium borohydride solution: accurately weigh 0.3783g sodium borohydride, is dissolved in 100mL water, and preparation concentration is the sodium borohydride solution of 0.1mol/L；
2. experiment
(13) accurately weighing described Acid Red B dye solution 3mL, the described sodium borohydride solution adding 0.1mL wherein reacts；
(14) accurately weighing described active orange dye solution 3mL, the described sodium borohydride solution adding 0.1mL wherein reacts；
(15) use ultraviolet-visible spectrophotometer to record Acid Red B dye solution described in the differential responses stage and the absorption spectrum of described active orange dye solution respectively, be depicted as absorption spectrum curve.
In the embodiment of the present invention 3 and comparative example 1, change according to Acid Red B in absorption spectrum curve and active orange dye solution characteristics absworption peak judges the palliating degradation degree of Acid Red B dyestuff and active orange dye, in order to quantify the palliating degradation degree of Acid Red B dyestuff and active orange dye, the absorbance under Acid Red B and active orange dye maximum absorption wavelength (the λ max=525nm of Acid Red B dyestuff, the λ max=477nm of active orange dye) condition is used to represent its relative concentration respectively.
For described Acid Red B dye solution, refer to Fig. 1, at λ=525nm place, in figure, curve is from top to bottom, Article 1, curve represents that described Acid Red B dye solution is not added with the absorption spectrum curve of other component, and Article 2 curve starts, and represents that described Acid Red B dye solution adds reducing agent NaBH4Rear interval 0min, 10min, 20min, 30min and 60min absorption spectrum curve, as seen from the figure, add reducing agent NaBH4After, the absorbance of described Acid Red B dyestuff drops to 0.993 from 1.157, have dropped 14.2%, but being as the increase in response time, there is not obvious decline in the absorbance of solution again, after reacting 60 minutes, absorbance is maintained at 0.989, and palliating degradation degree is 14.5%；Refer to Fig. 2, at λ=525nm place, in figure, curve is from top to bottom, Article 1, curve represents that described Acid Red B dye solution is not added with the absorption spectrum curve of other component, Article 2 curve starts, represent the interval 0min after the inorganic agent of the described Acid Red B dye solution described waste water from dyestuff of addition, 5min, 10min, 20min, 30min, 40min, the absorption spectrum curve of 50min and 60min, as seen from the figure, when after the inorganic agent adding described waste water from dyestuff in described Acid Red B dyestuff, there is significantly decline in the absorbance of described Acid Red B dyestuff always, after the catalytic degradation of 60 minutes, the final absorbance of described Acid Red B dyestuff is 0.050, the palliating degradation degree of dyestuff can reach 95.7%.
For described active orange dye solution, refer to Fig. 3, at λ=477nm place, in figure, curve is from top to bottom, Article 1, curve represents that described active orange dye solution is not added with the absorption spectrum curve of other component, and Article 2 curve starts, and represents that described active orange dye solution adds reducing agent NaBH4The absorption spectrum curve of rear interval 0min, 10min, 20min, 30min, as seen from the figure, adds reducing agent NaBH4After, the absorbance of solution drops to 0.491 from 0.505, have dropped 2.77%, but being as the increase in response time, there is not obvious decline in the absorbance of described active orange dye solution again, after reacting 60 minutes, absorbance is maintained at 0.491, and palliating degradation degree is 97.23%；Refer to Fig. 4, at λ=477nm place, in figure, curve is from top to bottom, Article 1, curve represents that described Acid Red B dye solution is not added with the absorption spectrum curve of other component, Article 2 curve starts, represent described active orange dye solution add described waste water from dyestuff inorganic agent after interval 0min, 3min, 10min, 20min, 30min, 40min, the absorption spectrum curve of 50min and 60min, as seen from the figure, after adding the inorganic agent of described waste water from dyestuff in described active orange dye solution, there is significantly decline in the absorbance of described active orange dye solution always, after the catalytic degradation of 60 minutes, the final absorbance of described active orange dye solution is 0.197, the palliating degradation degree of dyestuff reaches 61%.
By above-described embodiment 3 and comparative example 1 it can be seen that the inorganic agent of described waste water from dyestuff is applied in the processing method of degraded Acid Red B and active orange dye has significant effect.
Claims (8)
1. the inorganic agent of a waste water from dyestuff, it is characterised in that include component A and B component, described component A is nano-silver hydrosol, and described B component is reductant solution.
2. the inorganic agent of waste water from dyestuff according to claim 1, it is characterised in that the reducing agent in described reductant solution is sodium borohydride, solvent is water.
3. the inorganic agent of waste water from dyestuff according to claim 1, it is characterised in that described nano-silver hydrosol is prepared by biological reducing method, described biological reducing method comprises the steps:
Step 1): tea polyphenols, silver nitrate and sodium hydroxide are configured to aqueous solution respectively；
Step 2): silver nitrate solution is added in tea polyphenols solution and mix, and with sodium hydroxide solution regulate mixed solution pH value be 5～9, preparing described nano-silver hydrosol, wherein, the volume ratio of described tea polyphenols solution and described silver nitrate solution is 1～10:1～10.
4. the inorganic agent of waste water from dyestuff according to claim 1, it is characterised in that in described reductant solution, the concentration of reducing agent is 0.1～0.3mol/L, and in described nano-silver hydrosol, the content of nanometer silver is 50～200 μ g/L.
5. the processing method of a waste water from dyestuff, it is characterised in that step is as follows:
Adding the arbitrary described component A of Claims 1 to 4 in described waste water from dyestuff and B component reacts, the described component A of addition and the volume ratio of described B component are 1:0.5～2.
6. the processing method of waste water from dyestuff according to claim 5, it is characterised in that the reaction temperature of the processing method of described waste water from dyestuff is 20 DEG C～80 DEG C.
7. the processing method of waste water from dyestuff according to claim 5, it is characterised in that the response time of the processing method of described waste water from dyestuff is 15min～60min.
8. the processing method of waste water from dyestuff according to claim 5, it is characterised in that described waste water from dyestuff includes reactive orange and Acid Red B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610348951.7A CN105800709A (en) | 2016-05-24 | 2016-05-24 | Treating agent and method for dye wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610348951.7A CN105800709A (en) | 2016-05-24 | 2016-05-24 | Treating agent and method for dye wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379955A (en) * | 2016-11-17 | 2017-02-08 | 过冬 | Waste water treating agent and application thereof |
| CN106392098A (en) * | 2016-10-10 | 2017-02-15 | 苏州经贸职业技术学院 | Preparation method of nanometer silver hydrosol and treatment method for dye wastewater |
| CN109052518A (en) * | 2018-10-16 | 2018-12-21 | 北京泛博清洁技术研究院有限公司 | A kind of fur dyeing waste water treating agent and preparation method thereof, application |
-
2016
- 2016-05-24 CN CN201610348951.7A patent/CN105800709A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392098A (en) * | 2016-10-10 | 2017-02-15 | 苏州经贸职业技术学院 | Preparation method of nanometer silver hydrosol and treatment method for dye wastewater |
| CN106379955A (en) * | 2016-11-17 | 2017-02-08 | 过冬 | Waste water treating agent and application thereof |
| CN109052518A (en) * | 2018-10-16 | 2018-12-21 | 北京泛博清洁技术研究院有限公司 | A kind of fur dyeing waste water treating agent and preparation method thereof, application |
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