CN103910454A - Device and method for decreasing temperature of DSD (4,4'-diamido diphenylethylene-disulfonic acid) wastewater - Google Patents
Device and method for decreasing temperature of DSD (4,4'-diamido diphenylethylene-disulfonic acid) wastewater Download PDFInfo
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- CN103910454A CN103910454A CN201410167381.2A CN201410167381A CN103910454A CN 103910454 A CN103910454 A CN 103910454A CN 201410167381 A CN201410167381 A CN 201410167381A CN 103910454 A CN103910454 A CN 103910454A
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- wastewater
- tank
- waste water
- suction filtration
- resin adsorption
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- 239000002351 wastewater Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims description 11
- 230000003247 decreasing effect Effects 0.000 title abstract 3
- NJVVROVBSMYGLD-UHFFFAOYSA-N 1,2-diphenylethane-1,2-disulfonic acid Chemical compound C1(=CC=CC=C1)C(C(S(=O)(=O)O)C1=CC=CC=C1)S(=O)(=O)O NJVVROVBSMYGLD-UHFFFAOYSA-N 0.000 title abstract 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 32
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 28
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 25
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims abstract description 22
- 238000000967 suction filtration Methods 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 13
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005185 salting out Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 3
- 239000000975 dye Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- FECNOIODIVNEKI-UHFFFAOYSA-N 2-[(2-aminobenzoyl)amino]benzoic acid Chemical class NC1=CC=CC=C1C(=O)NC1=CC=CC=C1C(O)=O FECNOIODIVNEKI-UHFFFAOYSA-N 0.000 description 1
- ZJOJXRSMJNWWRN-UHFFFAOYSA-N 3-amino-6-[2-(4-aminophenyl)ethenyl]benzene-1,2-disulfonic acid Chemical compound C1=CC(N)=CC=C1C=CC1=CC=C(N)C(S(O)(=O)=O)=C1S(O)(=O)=O ZJOJXRSMJNWWRN-UHFFFAOYSA-N 0.000 description 1
- ZPTVNYMJQHSSEA-UHFFFAOYSA-N 4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1 ZPTVNYMJQHSSEA-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Physical Water Treatments (AREA)
Abstract
The invention relates to a device for decreasing the temperature of DSD (4,4'-diamido diphenylethylene-disulfonic acid) wastewater. The device disclosed by the invention comprises a wastewater buffer tank and a resin adsorption device and further comprises a glycol ice maker, a cold analysis tank, a suction filter tank, a wastewater collecting tank, a vacuum pump, a wastewater conveying pump I and a wastewater conveying pump II. Oxidized wastewater in the cold analysis tank is cooled to 2-5 DEG C by utilizing the glycol ice maker; the content of analyzed sodium sulphate is about 20-22%; the content of sodium sulphate after carrying out suction filtration and separation in the suction filter tank is increased to 45-50%; the salt precipitation working section is recycled; the salt content in separated wastewater is decreased to 5-7%; then, wastewater enters the resin adsorption device. According to the invention, the glycol ice maker, the cold analysis tank, the suction filter tank and the vacuum pump are mainly arranged additionally, and the salt content in wastewater is reduced before wastewater enters the resin adsorption device through the cold analysis and suction filtration steps, so that a pipeline is prevented from being blocked, and the production continuity is increased; solid sodium sulphate recycled for production is separated out for the second time after suction adsorption, therefore, the production utilization rate is increased, and the production cost is reduced.
Description
Technical Field
The invention relates to dye industrial wastewater treatment, in particular to a device and a method for cooling treatment of oxidation wastewater in DSD acid production.
Background
The DSD acid is fully known as 4, 4' -diaminostilbene-disulfonic acid, is one of important dye intermediates, and is used for synthesizing fluorescent whitening agents and other dyes. At present, the method adopts the sulfonation process of p-nitrotoluene and fuming sulfuric acid to produce DSD acid, and 15m is produced for each 1 ton of DSD acid3Oxidizing the wastewater. The common treatment method at present is resin adsorption and utilizationThe resin adsorption device adsorbs dinitrogen acid and other organic impurities in water, and sodium sulfate which is not easy to adsorb enters a sewage treatment plant along with water. The defects of the technology are as follows: 1. the pipeline is easy to block, and certain influence is brought to continuous production; 2. the waste water has high salt content (12-13% of sodium sulfate content) and causes waste of effective resources.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device for cooling and treating DSD acid wastewater, which can recycle effective resources and has strong continuity.
In order to solve the technical problems, the invention adopts the technical scheme that:
a device for cooling and treating DSD acid wastewater comprises a wastewater buffer tank, a resin adsorption device, an ethylene glycol ice maker, a cold separation tank, a suction filter tank, a wastewater collection tank, a vacuum pump, a wastewater delivery pump I and a wastewater delivery pump II; wherein,
the cold separation tank is connected with the glycol ice maker and is also connected with the outlet end of the wastewater buffer tank through a wastewater delivery pump I;
-a suction filtration tank connected to the outlet end of the cold separation tank;
-a waste water collection tank, which is connected with a vacuum pump and is also connected with the outlet end of the suction filtration tank;
the resin adsorption device is connected with the wastewater collection tank through a wastewater delivery pump II.
The invention also provides a method for treating DSD acid wastewater by cooling with the device, which comprises the steps of cooling the oxidation wastewater filtered by pressure with chilled water to separate out solid sodium sulfate, filtering to separate out solid sodium sulfate for recycling and salting out, and feeding the wastewater with the content of sodium sulfate reduced after separation into a resin adsorption device.
As a preferred scheme of the method, the method comprises the steps of cooling the oxidation wastewater in the cold separation tank to 2-5 ℃ by using a glycol ice machine, wherein the content of the sodium sulfate separated out in a cold separation tank is about 20-22%, the content of the sodium sulfate after the sodium sulfate is separated in a suction filtration tank by suction filtration is increased to 45% -50%, the sodium sulfate is recycled to a salting-out section, and the salt content of the separated wastewater is reduced to 5-7% and then enters a resin adsorption device.
Because the salt content of the DSD acid oxidation wastewater is high, the DSD acid oxidation wastewater is directly sent to a resin adsorption device and is easy to block a pipeline, the invention mainly adds the glycol ice maker, the cold separation tank, the suction filtration tank and the vacuum pump, and reduces the salt content in the wastewater before entering the resin adsorption device through the steps of cold separation and suction filtration, thereby avoiding pipeline blockage and improving the production continuity. Solid sodium sulfate meeting the requirement of recycling production is separated out for the second time after suction filtration, the production utilization rate is improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1-a wastewater buffer tank, 2-a resin adsorption device, 3-an ethylene glycol ice maker, 4-a cold separation tank, 5-a suction filter tank, 6-a wastewater collection tank, 7-a vacuum pump, 8-a wastewater delivery pump I, 9-a wastewater delivery pump II.
Detailed Description
As shown in fig. 1, the device for treating DSD acid wastewater by lowering temperature according to the present invention includes a wastewater buffer tank 1 and a resin adsorption device 2, and further includes a glycol ice maker 3, a cold separation tank 4, a suction filtration tank 5, a wastewater collection tank 6, a vacuum pump 7, a wastewater delivery pump I8, and a wastewater delivery pump II 9; the glycol ice maker 3 and the cold separating tank 4 are cold separating systems, the suction filtration tank 5, the waste water collection tank 6 and the vacuum pump 7 are suction filtration systems, the power system comprises a waste water delivery pump I8 and a waste water delivery pump II9, wherein,
the cold separation tank 4 is connected with the glycol ice maker 3 and is also connected with the outlet end of the waste water buffer tank 1 through a waste water delivery pump I8. The cold separating tank 4 is generally used for separating out substances with reduced solubility along with temperature reduction, stirring, a jacket and chilled water are generally arranged in the cold separating tank, the volume of jacket circulating water and the volume of equipment jacket are designed according to the hourly medium flow and the cooling requirement, and the temperature can be controlled within a required range.
-a suction filtration tank 5 connected to the outlet end of the cold separation tank 4; the suction filtration tank 5 is a device for realizing solid-liquid separation by using vacuum as power. The person skilled in the art can design the vacuum degree and the equipment volume according to the material load and the required concentration, so that the concentration of the object is controlled within the required range.
A wastewater collection tank 6, which is connected with a vacuum pump 7 and the outlet end of the suction filtration tank 5;
the resin adsorption device 2 is connected with the waste water collecting tank 6 through a waste water delivery pump II 9.
And cooling the oxidation wastewater obtained by filter pressing by using chilled water to separate out solid sodium sulfate, performing suction filtration to separate out the solid sodium sulfate for recycling and salting out, and allowing the wastewater with the sodium sulfate content reduced after separation to enter a resin adsorption device.
The temperature of the oxidation wastewater obtained by filter pressing is 15-18 ℃, the sodium sulfate content is 12-13%, according to the property that the solubility of sodium sulfate is reduced along with the reduction of the temperature, the oxidation wastewater in a cold separation tank is cooled to 2-5 ℃ by using a glycol ice machine, the sodium sulfate content obtained by cold separation is about 20-22%, the sodium sulfate content is increased to 45-50% after the filtration and separation in a filtration tank, a salting-out section is recycled, the salt content of the separated wastewater is reduced to 5-7%, the wastewater is collected in a wastewater collection tank 6 by using a vacuum pump 7, and the wastewater is conveyed into a resin adsorption device 2 through a wastewater conveying pump II9 under the control of a flow meter after the analysis is qualified. After being treated in the resin adsorption device 2, the wastewater is sent to a sewage treatment plant for treatment, and the high-concentration desorption liquid is sent to a waste alkali boiler for incineration.
Claims (3)
1. The utility model provides a device of sour waste water of cooling treatment DSD, includes waste water buffer tank (1) and resin adsorption equipment (2), its characterized in that: the device also comprises a glycol ice maker (3), a cold separation tank (4), a suction filtration tank (5), a waste water collection tank (6), a vacuum pump (7), a waste water delivery pump I (8) and a waste water delivery pump II (9); wherein,
the cold separation tank (4) is connected with the glycol ice maker (3) and is also connected with the outlet end of the wastewater buffer tank (1) through a wastewater delivery pump I (8);
-a suction filtration tank (5) connected to the outlet end of the cold separating tank (4);
-a waste water collection tank (6) connected to a vacuum pump (7) and to the outlet end of the suction filtration tank (5);
the resin adsorption device (2) is connected with the waste water collecting tank (6) through a waste water delivery pump II (9).
2. A method for treating DSD acid wastewater by cooling is characterized by comprising the following steps: and cooling the oxidation wastewater obtained by filter pressing by using chilled water to separate out solid sodium sulfate, performing suction filtration to separate out the solid sodium sulfate for recycling and salting out, and allowing the wastewater with the sodium sulfate content reduced after separation to enter a resin adsorption device.
3. The method of claim 2, wherein: cooling the oxidation wastewater in the cold separation tank (4) to 2-5 ℃ by using a glycol ice maker (3), wherein the content of the sodium sulfate separated out in a cold way is about 20-22%, the content of the sodium sulfate after suction filtration and separation in a suction filtration tank (5) is increased to 45% -50%, a salting-out section is recycled, and the content of the salt in the separated wastewater is reduced to 5-7% and enters a resin adsorption device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167381.2A CN103910454A (en) | 2014-04-24 | 2014-04-24 | Device and method for decreasing temperature of DSD (4,4'-diamido diphenylethylene-disulfonic acid) wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167381.2A CN103910454A (en) | 2014-04-24 | 2014-04-24 | Device and method for decreasing temperature of DSD (4,4'-diamido diphenylethylene-disulfonic acid) wastewater |
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| CN103910454A true CN103910454A (en) | 2014-07-09 |
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| CN201410167381.2A Pending CN103910454A (en) | 2014-04-24 | 2014-04-24 | Device and method for decreasing temperature of DSD (4,4'-diamido diphenylethylene-disulfonic acid) wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843937A (en) * | 2015-04-27 | 2015-08-19 | 浙江奇彩环境科技有限公司 | Treatment method for o-phenylenediamine production wastewater |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5575796A (en) * | 1978-12-03 | 1980-06-07 | Kimura Kakoki Kk | Treatment of waste water from production of alkali battery cadmium cathode plate |
| JPS60225689A (en) * | 1984-04-23 | 1985-11-09 | Japan Organo Co Ltd | Treatment of waste boric acid solution |
| CN1304882A (en) * | 2001-01-05 | 2001-07-25 | 南京大学 | Treatment and rediaimation of waste water in production of 4,4'-dinitrobistyrene-2,2'-bisulfonic acid |
| CN1858007A (en) * | 2006-03-06 | 2006-11-08 | 南京大学 | Treating and resourcing method for 4.4-diamido diphenyl propylene-2-disulfonic acid production oxide waste water |
| CN101177329A (en) * | 2007-11-20 | 2008-05-14 | 南京大学 | Method for eliminating water-soluble organic contamination concentration variation fluctuation in industrial waste water |
| CN101235014A (en) * | 2007-12-12 | 2008-08-06 | 唐树和 | Method for treating and reclaiming waste water of 2-aminopyridine production |
| CN102001760A (en) * | 2010-11-01 | 2011-04-06 | 浙江海正化工股份有限公司 | Recycling method of wastewater with hydroquinone and alkali metal salt thereof |
-
2014
- 2014-04-24 CN CN201410167381.2A patent/CN103910454A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5575796A (en) * | 1978-12-03 | 1980-06-07 | Kimura Kakoki Kk | Treatment of waste water from production of alkali battery cadmium cathode plate |
| JPS60225689A (en) * | 1984-04-23 | 1985-11-09 | Japan Organo Co Ltd | Treatment of waste boric acid solution |
| CN1304882A (en) * | 2001-01-05 | 2001-07-25 | 南京大学 | Treatment and rediaimation of waste water in production of 4,4'-dinitrobistyrene-2,2'-bisulfonic acid |
| CN1858007A (en) * | 2006-03-06 | 2006-11-08 | 南京大学 | Treating and resourcing method for 4.4-diamido diphenyl propylene-2-disulfonic acid production oxide waste water |
| CN101177329A (en) * | 2007-11-20 | 2008-05-14 | 南京大学 | Method for eliminating water-soluble organic contamination concentration variation fluctuation in industrial waste water |
| CN101235014A (en) * | 2007-12-12 | 2008-08-06 | 唐树和 | Method for treating and reclaiming waste water of 2-aminopyridine production |
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Non-Patent Citations (1)
| Title |
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| 化肥工业大全编委会编: "《化肥工业大全》", 30 September 1988, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843937A (en) * | 2015-04-27 | 2015-08-19 | 浙江奇彩环境科技有限公司 | Treatment method for o-phenylenediamine production wastewater |
| CN104843937B (en) * | 2015-04-27 | 2017-04-12 | 浙江奇彩环境科技股份有限公司 | Treatment method for o-phenylenediamine production wastewater |
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Application publication date: 20140709 |