CN103588266A - Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis - Google Patents
Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis Download PDFInfo
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- CN103588266A CN103588266A CN201210287160.XA CN201210287160A CN103588266A CN 103588266 A CN103588266 A CN 103588266A CN 201210287160 A CN201210287160 A CN 201210287160A CN 103588266 A CN103588266 A CN 103588266A
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- acid
- organic acid
- separation
- electrode foil
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Abstract
The invention relates to a chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis and belongs to the fields of chemistry, environmental engineering and industrial wastewater treatment. The technical problem to be solved is to recover organic acid in the wastewater by using an extraction solvent as a raw material. Main points of the technical scheme are as below: adding the extraction solvent, separating reaction precipitates, and conducting regeneration, washing and acid precipitation on the extraction solvent, so as to recover organic acid; and carrying out biochemical treatment on the wastewater after recycling, so that the COD of the wastewater can meet the national discharge standard. Compared with the prior art, the chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis provided by the invention has the characteristics of recovery of resources, reduction in the biochemical treatment burden and improvement of treatment efficiency, and can realize the large-scale treatment. Therefore, the method for treating organic acid in wastewater from electrode foil chemical synthesis is simple, efficient, energy-saving and environment-friendly, and reaches comprehensive utilization of resources.
Description
Technical field
The present invention relates to a kind of chemical recovery processing electrode foil and change into organic acid method in waste water.Belong to chemistry and environmental engineering, industrial sewage process field.
Background technology
It is to take extraction agent as a raw material that processing electrode foil changes into organic acid method in waste water, will change into the method for the organic acid recycling in waste water by chemical process.Be applied to water treatment, environmental improvement field.
From production technique, existing to change into organic acid treatment process in waste water be biochemical treatment process.Exist biochemical treatment burden heavy, the defects such as processing efficiency is low, the wasting of resources.
Summary of the invention
The object of the invention is to provide a kind of chemical recovery and processes electrode foil and change into organic acid method in waste water, is a kind ofly to take extraction agent as raw material, will change into the method for the organic acid recycling in waste water by chemical process.Its chemical equation is as follows:
A kind of chemical recovery of the present invention is processed electrode foil and is changed into organic acid method in waste water, compared with prior art has resource and reclaims, alleviates biochemical treatment burden, improves the features such as processing efficiency, can realize extensive processing.It is a kind of method that simple, efficient, energy saving, environmental protection processing changes into organic acid wastewater.
Process electrode foil and change into an organic acid method in waste water, concrete grammar comprises A, two kinds of techniques of B, and its concrete steps are respectively:
(1) technique A:
(1.1) reinforced stirring: extraction agent is added and changed in organic acid wastewater, stirring reaction.
(1.2) precipitate and separate: utilize whizzer separation or filter method by the precipitate and separate in step (1.1) gained reactant.Liquid after separation enters next step biochemical treatment.
(1.3) washing: step (1.2) gained precipitation material is added to washing composition agitator treating.
(1.4) precipitation separation: utilize whizzer separation or filter method by the precipitate and separate in step (1.3) material.
(1.5) acid out: step (1.4) gained precipitation material acid adding is carried out to acid out.
(1.6) separation: utilize whizzer separation or filter method that step (1.5) gained acid out feed separation is reclaimed to organic acid.
(1.7) extraction agent regeneration: add regenerator in step (1.6) gained liquid phase, stirring reaction, makes extraction agent through aftertreatment regeneration.
(2) technique B:
(2.1) reinforced stirring: extraction agent is added and changed in organic acid wastewater, stirring reaction.
(2.2) precipitation separation: utilize whizzer separation or filter method by the precipitate and separate in step (2.1) gained reactant.
(2.3) washing: step (2.2) gained precipitation material is added to detergent washing.
(2.4) precipitation separation: utilize whizzer separation or filter method by the precipitate and separate in step (2.3) material.
(2.5) extraction agent regeneration:
(2.5.1) in step (2.4) gained precipitation material, add regenerator, stirring reaction.
(2.5.2) utilize whizzer separation or filter method by the precipitate and separate in step (2.5.1) material, through aftertreatment regeneration, make extraction agent.
(2.6) acid out: step (2.5.2) gained solution acid adding is carried out to acid out.
(2.7) separation: utilize whizzer separation or filter method that step (2.6) gained acid out feed separation is reclaimed to organic acid.
Accompanying drawing explanation
Fig. 1 is technique A schematic flow sheet of the present invention.
Fig. 2 is technique B schematic flow sheet of the present invention.
Embodiment
Below by embodiment, further illustrate technical scheme of the present invention, but with embodiment, be not limited.
Embodiment 1
In 4 tons change into organic acid wastewater, add extraction agent 80kg, start stirrer, react sedimentation and filtration 20 minutes.Detect liquor C OD.Former water COD is 1140.7mg/L, and after processing, COD is 296.3mg/L, and clearance is 74%.Filter residue acid adding acid out, sedimentation and filtration, obtains organic acid 63kg.In acidified filtrate, add regenerator 100kg, regeneration extraction agent.
Embodiment 2
In 4 tons change into feed tank liquor waste water, add 230kg extraction agent, start stirrer, react sedimentation and filtration 20 minutes.Detect liquor C OD.Former water COD is 2.32 * 10
4mg/L, after processing, COD is 1.37 * 10
3mg/L, clearance is 94%.Filter residue, with regenerator 300kg, reclaims extraction agent, and filtrate acid adding is carried out acid out, and sedimentation and filtration obtains organic acid 172kg.
Claims (6)
1. the present invention relates to a kind of chemical recovery processing electrode foil and change into organic acid method in waste water, it is characterized in that, described chemical recovery is processed electrode foil, and to change in waste water organic acid method be a kind ofly to take extraction agent as raw material, electrode foil changed into the method for the organic acid recycling in waste water.Concrete grammar comprises A, two kinds of techniques of B, and its concrete steps are respectively:
(1) technique A:
(1.1) reinforced stirring: extraction agent is added and changed in organic acid wastewater, stirring reaction.
(1.2) precipitate and separate: utilize whizzer separation or filter method by the precipitate and separate in step (1.1) gained reactant.Liquid after separation enters next step biochemical treatment.
(1.3) washing: step (1.2) gained precipitation material is added to washing composition agitator treating.
(1.4) precipitation separation: utilize whizzer separation or filter method by the precipitate and separate in step (1.3) material.
(1.5) acid out: step (1.4) gained precipitation material acid adding is carried out to acid out.
(1.6) separation: utilize whizzer separation or filter method that step (1.5) gained acid out feed separation is reclaimed to organic acid.
(1.7) extraction agent regeneration: add regenerator in step (1.6) gained liquid phase, stirring reaction, makes extraction agent through aftertreatment regeneration.
(2) technique B:
(2.1) reinforced stirring: extraction agent is added and changed in organic acid wastewater, stirring reaction.
(2.2) precipitation separation: utilize whizzer separation or filter method by the precipitate and separate in step (2.1) gained reactant.
(2.3) washing: step (2.2) gained precipitation material is added to detergent washing.
(2.4) precipitation separation: utilize whizzer separation or filter method by the precipitate and separate in step (2.3) material.
(2.5) extraction agent regeneration:
(2.5.1) in step (2.4) gained precipitation material, add regenerator, stirring reaction.
(2.5.2) utilize whizzer separation or filter method by the precipitate and separate in step (2.5.1) material, through aftertreatment regeneration, make extraction agent.
(2.6) acid out: step (2.5.2) gained solution acid adding is carried out to acid out.
(2.7) separation: utilize whizzer separation or filter method that step (2.6) gained acid out feed separation is reclaimed to organic acid.
2. a kind of chemical recovery as claimed in claim 1 is processed electrode foil and is changed into organic acid method in waste water, it is characterized in that, described extraction agent is Al
3+, Ca
2+, Mg
2+, Mn
2+, Fe
2+, Zn
2+, Pb
2+, Na
+, K
+, Ag
+, Cu
2+, Mn
2+, NH
4 2+salt or a kind of or any phase mixture wherein in oxyhydroxide.
3. a kind of chemical recovery as claimed in claim 1 or 2 is processed electrode foil and is changed into organic acid method in waste water, it is characterized in that, the described organic acid changing in waste water is a kind of in hexanodioic acid, citric acid, nonane diacid or its salt or any phase mixture wherein.
4. a kind of chemical recovery as described in claim 1-3 is processed electrode foil and is changed into organic acid method in waste water, it is characterized in that, described washing composition is a kind of of water or hydrophilic organics hydrophilicity or any phase mixture wherein.
5. a kind of chemical recovery as described in claim 1-4 is processed electrode foil and is changed into organic acid method in waste water, it is characterized in that, described extraction agent regenerator is Ca
2+, Mg
2+, Na
+, K
+, NH
4 2+oxyhydroxide in a kind of or any phase mixture wherein.
6. a kind of chemical recovery as described in claim 1-5 is processed electrode foil and is changed into organic acid method in waste water, it is characterized in that, described acid out is a kind of of sulfuric acid, phosphoric acid, hydrochloric acid, nitric acid, formic acid, acetic acid or any phase mixture wherein with acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287160.XA CN103588266A (en) | 2012-08-14 | 2012-08-14 | Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210287160.XA CN103588266A (en) | 2012-08-14 | 2012-08-14 | Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105646180A (en) * | 2016-03-01 | 2016-06-08 | 苏州艾缇克药物化学有限公司 | Pharmaceutical intermediate 2,4-difluorobenzoic acid synthesis method |
| WO2019165834A1 (en) * | 2018-03-01 | 2019-09-06 | 中国石油大学(北京) | Method and system for treatment of spent chloroaluminate ionic liquid catalyst and alkaline wastewater |
| CN108203083B (en) * | 2018-01-30 | 2021-11-16 | 新疆智诚同欣环保科技有限公司 | Method and device for recovering waste sulfuric acid and waste aluminum sulfate during electrode foil production |
-
2012
- 2012-08-14 CN CN201210287160.XA patent/CN103588266A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105646180A (en) * | 2016-03-01 | 2016-06-08 | 苏州艾缇克药物化学有限公司 | Pharmaceutical intermediate 2,4-difluorobenzoic acid synthesis method |
| CN108203083B (en) * | 2018-01-30 | 2021-11-16 | 新疆智诚同欣环保科技有限公司 | Method and device for recovering waste sulfuric acid and waste aluminum sulfate during electrode foil production |
| WO2019165834A1 (en) * | 2018-03-01 | 2019-09-06 | 中国石油大学(北京) | Method and system for treatment of spent chloroaluminate ionic liquid catalyst and alkaline wastewater |
| US11426702B2 (en) | 2018-03-01 | 2022-08-30 | China University Of Petroleum-Beijing | Method and system for treatment of spent chloroaluminate ionic liquid catalyst and alkaline wastewater |
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Application publication date: 20140219 |