CN111689635A - Method for treating waste water containing ammonium acetate - Google Patents
Method for treating waste water containing ammonium acetate Download PDFInfo
- Publication number
- CN111689635A CN111689635A CN202010525852.8A CN202010525852A CN111689635A CN 111689635 A CN111689635 A CN 111689635A CN 202010525852 A CN202010525852 A CN 202010525852A CN 111689635 A CN111689635 A CN 111689635A
- Authority
- CN
- China
- Prior art keywords
- ammonium acetate
- acetic acid
- ammonium sulfate
- waste water
- treating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000005695 Ammonium acetate Substances 0.000 title claims abstract description 61
- 229940043376 ammonium acetate Drugs 0.000 title claims abstract description 61
- 235000019257 ammonium acetate Nutrition 0.000 title claims abstract description 61
- 239000002351 wastewater Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 41
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 132
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 48
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 48
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005886 esterification reaction Methods 0.000 claims abstract description 20
- 238000005185 salting out Methods 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000019439 ethyl acetate Nutrition 0.000 claims abstract description 7
- 239000002535 acidifier Substances 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 238000004821 distillation Methods 0.000 claims description 16
- 239000005416 organic matter Substances 0.000 claims description 7
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 239000008346 aqueous phase Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 239000012071 phase Substances 0.000 claims 1
- 230000020477 pH reduction Effects 0.000 abstract description 15
- 239000000047 product Substances 0.000 abstract description 4
- 239000006227 byproduct Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 30
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000012535 impurity Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- JCEGDDHHSZJJHV-UHFFFAOYSA-N methanamine;phosphane Chemical compound P.NC JCEGDDHHSZJJHV-UHFFFAOYSA-N 0.000 description 5
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 4
- 239000012452 mother liquor Substances 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 3
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- NNKVPIKMPCQWCG-UHFFFAOYSA-N methamidophos Chemical compound COP(N)(=O)SC NNKVPIKMPCQWCG-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 ammonium ions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 235000019614 sour taste Nutrition 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
-
- 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
-
- 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
-
- 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
- C02F2101/34—Organic compounds containing oxygen
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for treating waste water containing ammonium acetate, which comprises the steps of firstly, acidifying the waste water containing ammonium acetate by an acidifying agent to convert the ammonium acetate in the waste water into acetic acid and ammonium sulfate; distilling to remove acetic acid aqueous solution, producing acetic ester from the acetic acid aqueous solution by adopting an esterification reaction rectification method, and separating ammonium sulfate from organic matters remained in the water phase by adopting a self-salting-out method to obtain an ammonium sulfate product. The method adopts the method of firstly acidifying and then directly distilling, so that the acetic acid formed after acidification is separated from the ammonium sulfate in advance, the method is favorable for the subsequent esterification reaction of the acetic acid, and the content of organic matters in the obtained ammonium sulfate is less than or equal to 0.1 percent by utilizing the self-salting-out technology, so that the quality of the ammonium sulfate byproduct is greatly improved, the waste of the ammonium acetate wastewater is really changed into valuable, and the method has great environmental protection benefit and economic benefit.
Description
Technical Field
The invention belongs to the field of wastewater treatment and resource recovery, relates to a method for treating wastewater containing ammonium acetate, and particularly relates to a method for treating wastewater containing ammonium acetate and recovering acetic ester and ammonium sulfate in a resource manner.
Background
In the production process of furfural and methylamine phosphine, a large amount of waste water containing ammonium acetate is produced, and acetate radicals in the waste water are wasted if the waste water is directly treated. Therefore, how to realize the waste water treatment of ammonium acetate and realize resource utilization is a problem for furfural and methylamine phosphine production enterprises.
The patent CN1327953A discloses a method for treating furfural wastewater containing ammonium acetate, which comprises the steps of firstly separating organic matters in the wastewater by adsorption, then concentrating ammonium acetate mother liquor, separating out part of ammonium acetate, dehydrating to prepare acetamide, returning the acetamide to a furfural production system, acidifying ammonium acetate saturated liquid by concentrated sulfuric acid, separating out ammonium sulfate, acidifying, crystallizing, filtering to remove ammonium sulfate, then carrying out esterification reaction on the mother liquor containing acetic acid and butanol to obtain butyl acetate. This method has the following disadvantages: because the solubility of the ammonium acetate is as high as 148g/100g, the mother liquor obtained after acidification and filtration of the saturated aqueous solution of the ammonium acetate still contains a large amount of ammonium acetate, and because of the existence of the ammonium acetate, in the subsequent esterification reaction, the pH value in the aqueous solution is gradually increased along with the complete consumption of the acetic acid, and the acetic ester generated in the esterification reaction generates hydrolysis reaction, thereby influencing the yield of the esterification reaction. Therefore, the ammonium acetate needs to be removed first, and then esterification reaction is carried out, so that reaction rectification is possible to improve the conversion rate of the acetic acid and the yield of the acetic ester.
Patent CN1313282A discloses a method for separating ammonium acetate and furfural from wastewater by adsorption, in which the adsorbed acetate ions are desorbed by alkaline desorption and then acidified to obtain acetic acid, and the acidified solution is filtered and then directly added with ethanol to perform esterification reaction to obtain ethyl acetate. This method also has the drawbacks related to patent CN 1327953A.
Patent CN108689541A discloses a method for treating ammonium acetate-containing wastewater, which comprises the steps of firstly carrying out reduced pressure distillation dehydration on ammonium acetate wastewater to obtain water and mother liquor containing high-concentration ammonium acetate, acidifying the high-concentration ammonium acetate aqueous solution by using sulfuric acid, then cooling and crystallizing to precipitate ammonium sulfate, and distilling the precipitated residual liquid to obtain an acid-acid aqueous solution. The main disadvantage of the method is that a large amount of acetic acid is inevitably carried in ammonium sulfate crystals generated by cooling and crystallizing after the ammonium acetate aqueous solution is acidified, so that the ammonium sulfate generates a strong sour taste and cannot be sold as a refined byproduct.
Disclosure of Invention
Aiming at various defects in the prior art, the invention aims to provide a method for treating waste water containing ammonium acetate, which realizes the reclamation of acetate and the refinement of ammonium sulfate.
The purpose of the invention is realized by the following technical scheme:
a method for treating waste water containing ammonium acetate comprises the following steps: firstly, acidifying the ammonium acetate wastewater by using an acidifying agent to convert ammonium acetate in the wastewater into acetic acid and ammonium sulfate; distilling to remove acetic acid aqueous solution, producing acetic ester from the acetic acid aqueous solution by esterification distillation, and separating ammonium sulfate from part of organic matters remained in the water phase by self-salting out method to obtain refined ammonium sulfate product.
The ammonium acetate wastewater is wastewater produced by furfural or methylamine phosphine, the mass fraction of ammonium acetate in the wastewater is 15-25%, the mass fraction of ammonium sulfate is 1-3%, and the mass fraction of organic matters is less than or equal to 0.5%. The organic matter in the furfural production wastewater is mainly furfural except acetic acid, and the organic matter in the methylamine phosphine production wastewater is mainly methylamine phosphine except acetic acid.
The acidifying agent is sulfuric acid with the mass fraction of more than or equal to 70%, preferably 98% concentrated sulfuric acid, and the adding amount of the sulfuric acid is calculated by the molar ratio of the sulfuric acid to the ammonium acetate being 0.5-0.55: 1.
The distillation is normal pressure distillation, the temperature is 130-150 ℃, part of water and most of acetic acid in the acidizing fluid are distilled out, the mass fraction of ammonium sulfate in the distillation residue is 45-50%, the content of organic matters except the acetic acid is 0.5-1.1%, the content of the acetic acid is less than or equal to 0.07%, and the organic matters in the ammonium sulfate product are further separated after salting out at the temperature of 25-40 ℃ by utilizing the electrostatic repulsion between high-concentration ammonium ions and organic matter molecules, so that the content of the organic matters in the ammonium sulfate product is less than or equal to 0.1%.
The esterification reaction rectification method adopts methanol as aliphatic alcohol, the esterification reaction temperature is 60-65 ℃, the number of theoretical plates of the reaction rectification tower is 35-50, and the feeding molar ratio of the methanol to the acetic acid in the reaction rectification tower is 1-2: 1.
As a further preferable technical scheme of the invention, the water phase obtained by the esterification reaction rectification method and the water phase obtained by the self-salting-out method adopt biochemical further purification treatment, thereby realizing the recovery of acetic acid resources and the standard discharge of waste water.
The invention has the beneficial effects that:
the method adopts the method of firstly acidifying and then directly distilling, so that the acetic acid formed after acidification is separated from the ammonium sulfate in advance, the method is favorable for the subsequent esterification reaction of the acetic acid, the ammonium sulfate is separated from part of organic matters remained in a water phase by utilizing a self-salting-out technology, the content of the organic matters in the obtained ammonium sulfate is lower than 0.1 percent, the quality of the ammonium sulfate by-product is greatly improved, the waste of ammonium acetate wastewater is really changed into valuable, and the method has great environmental protection benefit and economic benefit.
Drawings
FIG. 1 is a flow chart of the method for treating waste water containing ammonium acetate according to the present invention.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Example 1
The ammonium acetate wastewater to be treated is wastewater from furfural production, wherein the mass fraction of ammonium acetate is 25%, the mass fraction of ammonium sulfate is 2.9%, the organic impurities mainly comprise acetic acid and furfural, and the total mass fraction of the organic impurities is 0.5%.
As shown in figure 1, 1000kg of ammonium acetate wastewater is added into an acidification kettle, 178.6kg of 98% concentrated sulfuric acid is slowly dropped into the acidification kettle, and the mixture is stirred for half an hour, so that the ammonium acetate in the wastewater is converted into acetic acid and ammonium sulfate. The temperature of the jacket of the acidification kettle is increased to 150 ℃ for atmospheric distillation, 637.9kg of materials containing 194.4kg of acetic acid are distilled out, the distilled materials are introduced into a reaction rectification system to react with methanol to generate methyl acetate, the theoretical plate number of the adopted reaction rectification tower is 50, the esterification reaction temperature is 65 ℃, the final methanol consumption is 207.4kg, and the conversion rate of the acetic acid reaches 99.5%.
The distillation residue in the acidification kettle contains 243.3kg of ammonium sulfate, the content of furfural and other organic impurities (without acetic acid) in the distillation residue is 0.92 percent, the content of acetic acid is about 0.07 percent, the temperature is reduced to 25 ℃, self-salting-out action is generated, ammonium sulfate solid is separated out, most organic matters of the distillation residue are separated from the ammonium sulfate, and the organic matter content in the ammonium sulfate solid obtained after filtration and separation is 0.08 percent.
Example 2
The ammonium acetate wastewater to be treated is wastewater from furfural production, wherein the mass fraction of ammonium acetate is 20%, the mass fraction of ammonium sulfate is 2.1%, the organic impurities mainly comprise acetic acid and furfural, and the total mass fraction of the organic impurities is 0.2%.
2000kg of ammonium acetate wastewater is added into an acidification kettle, 259.7kg of 98% concentrated sulfuric acid is slowly dropped into the acidification kettle, and the mixture is stirred for half an hour, so that the ammonium acetate in the wastewater is converted into acetic acid and ammonium sulfate. The temperature of the jacket of the acidification kettle is increased to 150 ℃ for atmospheric distillation, 1458.0kg of materials containing 311.4kg of acetic acid are distilled out, the distilled materials are introduced into a reaction rectification system to react with methanol to generate methyl acetate, the theoretical plate of the adopted reaction rectification tower is 35, the esterification reaction temperature is 60 ℃, the final methanol consumption is 166.1kg, and the conversion rate of the acetic acid reaches 98.2%.
The distillation residue in the acidification kettle contains 384.9kg of ammonium sulfate, the content of furfural and other organic impurities (without acetic acid) in the distillation residue is 0.5 percent, the content of acetic acid is about 0.04 percent, the temperature is reduced to 30 ℃, self-salting-out is generated, ammonium sulfate solid is separated out, most organic matters of the distillation residue are separated from the ammonium sulfate, and the organic matter content in the ammonium sulfate solid obtained after filtration and separation is 0.1 percent.
Example 3
The ammonium acetate wastewater to be treated is wastewater from methamidophos production, wherein the mass fraction of ammonium acetate is 15%, the mass fraction of ammonium sulfate is 1.4%, the organic impurities mainly comprise acetic acid and methamidophos, and the total mass fraction of the organic impurities is 0.3%.
5000kg of ammonium acetate wastewater is added into an acidification kettle, 487.0kg of 98% concentrated sulfuric acid is slowly dropped into the acidification kettle, and the mixture is stirred for half an hour, so that the ammonium acetate in the wastewater is converted into acetic acid and ammonium sulfate. The temperature of an acidification kettle jacket is increased to 150 ℃ for atmospheric distillation, 4061.3kg of materials containing 583.7kg of acetic acid are distilled out, the distilled materials are introduced into a reaction rectification system to react with methanol to generate methyl acetate, the adopted reaction rectification tower has a theoretical plate of 50, the esterification reaction temperature is 65 ℃, the final methanol consumption is 467.0kg, and the conversion rate of the acetic acid reaches 99.3%.
The residue in the acidification kettle contains 712.9kg of ammonium sulfate, the content of furfural and other organic impurities (not containing acetic acid) in the residue is 1.1%, the content of acetic acid is about 0.05%, the temperature is reduced to 40 ℃, self-salting-out action is generated, ammonium sulfate solid is separated out, most of organic matters in the residue are separated from ammonium sulfate, and the organic matter content in the ammonium sulfate solid obtained after filtration and separation is 0.05%.
Claims (10)
1. A method for treating waste water containing ammonium acetate is characterized in that firstly, acidifying agent is adopted to acidify the waste water containing ammonium acetate so as to convert the ammonium acetate in the waste water into acetic acid and ammonium sulfate; distilling to remove acetic acid aqueous solution, producing acetic ester from the acetic acid aqueous solution by adopting an esterification reaction rectification method, and separating ammonium sulfate from organic matters remained in the water phase by adopting a self-salting-out method to obtain an ammonium sulfate product.
2. The method for treating the waste water containing the ammonium acetate according to claim 1, wherein the mass fraction of the ammonium acetate in the ammonium acetate waste water is 15 to 25%, the mass fraction of the ammonium sulfate is 1 to 3%, and the mass fraction of the organic matter is less than or equal to 0.5%.
3. The method for treating wastewater containing ammonium acetate according to claim 1, wherein the acidifying agent is sulfuric acid with a mass fraction of 70% or more, preferably 98% concentrated sulfuric acid.
4. The method for treating ammonium acetate-containing wastewater according to claim 3, wherein the amount of sulfuric acid added is 0.5 to 0.55:1 in terms of the molar ratio of sulfuric acid to ammonium acetate.
5. The method for treating the waste water containing the ammonium acetate according to claim 1, wherein the distillation is atmospheric distillation and the temperature is 130-150 ℃.
6. The method for treating wastewater containing ammonium acetate according to claim 1, wherein the mass fraction of ammonium sulfate in the residue is 45 to 50%, and the content of organic substances other than acetic acid is 0.5 to 1.1%.
7. The method for treating ammonium acetate-containing wastewater as claimed in claim 1, wherein the self-salting-out temperature is 25 to 40 ℃.
8. The method for treating waste water containing ammonium acetate according to claim 1, wherein the content of organic substances in the ammonium sulfate product is less than or equal to 0.1%.
9. The method for treating wastewater containing ammonium acetate according to claim 1, wherein the aliphatic alcohol used in the rectification by the esterification reaction is methanol; the esterification reaction temperature is 60-65 ℃.
10. The method for treating ammonium acetate-containing wastewater as claimed in claim 1, wherein the aqueous phase obtained by the rectification method of the esterification reaction and the aqueous phase obtained by the self-salting out are subjected to biochemical purification treatment to achieve standard discharge of wastewater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010525852.8A CN111689635A (en) | 2020-06-10 | 2020-06-10 | Method for treating waste water containing ammonium acetate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010525852.8A CN111689635A (en) | 2020-06-10 | 2020-06-10 | Method for treating waste water containing ammonium acetate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111689635A true CN111689635A (en) | 2020-09-22 |
Family
ID=72480301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010525852.8A Pending CN111689635A (en) | 2020-06-10 | 2020-06-10 | Method for treating waste water containing ammonium acetate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111689635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754170A (en) * | 2021-09-27 | 2021-12-07 | 高密银鹰新材料股份有限公司 | Method for treating evaporation waste liquid in cellulose production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB445108A (en) * | 1934-10-02 | 1936-04-02 | British Celanese | Improvements in the recovery of acidic and basic reagents |
| CN1313282A (en) * | 2001-03-08 | 2001-09-19 | 水志良 | Process for treating waste water containing furaldehyde and recovering furaldehyde and acetic acid |
| CN1354165A (en) * | 2001-11-15 | 2002-06-19 | 孙世勇 | Control of waste water produced in furfural industry and preparation process of butyl acetate |
| CN201400612Y (en) * | 2009-04-21 | 2010-02-10 | 南通维立科化工有限公司 | Acephate ammonium acetate wastewater treatment system |
| CN108689541A (en) * | 2018-04-24 | 2018-10-23 | 江苏蓝丰生物化工股份有限公司 | The processing method of the waste water containing ammonium acetate |
-
2020
- 2020-06-10 CN CN202010525852.8A patent/CN111689635A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB445108A (en) * | 1934-10-02 | 1936-04-02 | British Celanese | Improvements in the recovery of acidic and basic reagents |
| CN1313282A (en) * | 2001-03-08 | 2001-09-19 | 水志良 | Process for treating waste water containing furaldehyde and recovering furaldehyde and acetic acid |
| CN1354165A (en) * | 2001-11-15 | 2002-06-19 | 孙世勇 | Control of waste water produced in furfural industry and preparation process of butyl acetate |
| CN201400612Y (en) * | 2009-04-21 | 2010-02-10 | 南通维立科化工有限公司 | Acephate ammonium acetate wastewater treatment system |
| CN108689541A (en) * | 2018-04-24 | 2018-10-23 | 江苏蓝丰生物化工股份有限公司 | The processing method of the waste water containing ammonium acetate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754170A (en) * | 2021-09-27 | 2021-12-07 | 高密银鹰新材料股份有限公司 | Method for treating evaporation waste liquid in cellulose production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109503410B (en) | Method for recovering DMF (dimethyl formamide) solvent in sucralose production | |
| CN111689908B (en) | Post-treatment method for synthesizing 4, 6-dihydroxypyrimidine | |
| CN108658757B (en) | Method for recovering phenylacetic acid from 6-aminopenicillanic acid enzymatic aqueous solution | |
| CN111689635A (en) | Method for treating waste water containing ammonium acetate | |
| CN108640844B (en) | Method for recovering triethylamine from industrial wastewater | |
| CN116535338B (en) | Potassium salt recycling process in production process of D, L-methionine | |
| CN110922417B (en) | Method for recovering cefalexin crystallization mother liquor | |
| CN111393323A (en) | Environment-friendly clean production method of high-purity cyanoacetic acid, cyanoacetic ester and malonic ester | |
| CN111606822A (en) | Method for recovering acidic DMF (dimethyl formamide) in sucralose production | |
| CN111646919A (en) | Method for recovering acidic DMF (dimethyl formamide) in sucralose esterification reaction | |
| CN216303678U (en) | Recovery processing device for waste liquid generated in acetochlor production | |
| CN113860995B (en) | Recovery treatment process and treatment device for waste liquid produced in production of acetochlor | |
| CN215403115U (en) | Resource system for organic wastewater rich in sodium sulfate and ammonium sulfate | |
| CN113087630A (en) | Method for recycling and applying perindopril intermediate resolving agent (R) - (+) -alpha-phenylethylamine | |
| CN209940877U (en) | Utilize device of dimethyl phosphite accessory substance synthetic glyphosate | |
| CN111547741A (en) | Method for recovering byproduct ammonium chloride in kresoxim-methyl production process | |
| CN111039486A (en) | Method for treating o-ethoxyphenol production wastewater | |
| CN110156873B (en) | Preparation method of Fmoc-D-Pro-D-Pro-OH | |
| CN114249352B (en) | Method for treating wastewater generated in production of 6-methoxy tetralone | |
| CN115636741B (en) | Method for separating formaldehyde from formaldehyde organic solution and application thereof | |
| CN114605336B (en) | Post-treatment and waste water resource utilization method for synthesizing 4, 6-dihydroxypyrimidine | |
| CN117865788A (en) | Production process of L-malic acid | |
| CN116789541A (en) | Method for separating and purifying cyclopentanone from adiponitrile by-product | |
| CN114212934A (en) | Treatment process for methyl 3,4, 5-trimethoxybenzoate wastewater with high salinity and high COD (chemical oxygen demand) | |
| CN116768734A (en) | Recovery and purification method of low-purity pregabalin intermediate resolving agent R- (+) -alpha-phenethylamine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |
|
| RJ01 | Rejection of invention patent application after publication |