CN103172158A - Preparation method of coagulation decolorant for reusing treatment of dyeing waste water - Google Patents
Preparation method of coagulation decolorant for reusing treatment of dyeing waste water Download PDFInfo
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- CN103172158A CN103172158A CN2013100868768A CN201310086876A CN103172158A CN 103172158 A CN103172158 A CN 103172158A CN 2013100868768 A CN2013100868768 A CN 2013100868768A CN 201310086876 A CN201310086876 A CN 201310086876A CN 103172158 A CN103172158 A CN 103172158A
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Abstract
A preparation method of a coagulation decolorant for reusing treatment of a dyeing waste water comprises the following steps: a, adding formaldehyde, dicyandiamide, and ammonium chloride into a reaction kettle by using a one-step process, stirring up and uniformly mixing the above raw materials, and slowly heating the mixture; b, performing natural reaction for 1-2 hours after the heating temperature of the mixture is 50-60 DEG C, and continuously heating the mixture to 90-100 DEG C, and then continuously performing the reaction for 3 hours; c, adding urea into the reaction mixture after the temperature of the mixture is dropped to 40-50 DEG C, and adding an anion PAM solution into the mixture; and d, cooling the mixture to room temperature and barreling the mixture. The coagulation decolorant has a good precipitation effect, obvious decolorizing effect, and simple production procedure.
Description
Technical field
The present invention relates to the treatment technology of printing and dyeing industrial waste water, is a kind of preparation method of coagulate decolourant of printing-dying wastewater recycling processing.
Background technology
On printing and dyeing industry the discharging of waste water be that a class concentration is high, complicated component, trade effluent that colourity is high, all there are strict regulation in countries in the world and the Chinese government to the discharging of this class waste water.Wherein, reactive dyestuffs method dyeing and printing process is due to its economic dyeing, and high look firm, the chromatogram width, and lovely luster becomes the important dyestuff of cellulose dyeing, wool, knitted fabrics, synthetic dyeing.But the printing technology of reactive dyestuffs is along with the development of production practice, some new technical problems that come out, and mainly contain the following aspects: the utilization ratio of dyestuff is not high, is generally 65%-78%, can produce a large amount of coloured sewage; A large amount of ionogen (as alkali, salt) is arranged in waste water.
One of top priority of processing such waste water is decolouring, and under present circumstances, treatment agent commonly used is that aluminium is, ferric flocculant, mostly be PAC and PAM and mix use, but sedimentation effect is bad, and production process is complicated.
Summary of the invention
In order to solve in prior art coagulate decolourant existing defective when the treatment of dyeing and printing, provide a kind of sedimentation effect good, decolorizing effect is obvious, the preparation method of the coagulate decolourant that the relatively simple printing-dying wastewater recycling of production process is processed.
To achieve these goals, the technical solution used in the present invention is:
The preparation method of the coagulate decolourant that a kind of printing-dying wastewater recycling is processed comprises the following steps:
A, employing one-step technology add formaldehyde, Dyhard RU 100, ammonium chloride in reactor, stir it is mixed, and slowly heating;
When the Heating temperature of b, solution reaches 50-60 ℃, after carrying out natural reaction 1-2 hour, continue heated solution to 90-100 ℃, sustained reaction 2-4 hour;
C, when temperature is down to 40-50 ℃, after adding urea to react in the solution, then add negatively charged ion PAM solution;
D, be cooled to room temperature and barrelling.
The preparation method of the coagulate decolourant that above-mentioned a kind of printing-dying wastewater recycling is processed, the weight part of described formaldehyde is 15-25, the weight part of described Dyhard RU 100 is 20-40, the weight part of described ammonium chloride is 10-15, the weight part of described urea is 0-5, and the weight part of described negatively charged ion PAM solution is 10-15.
The preparation method of the coagulate decolourant that above-mentioned a kind of printing-dying wastewater recycling is processed, the concentration of described negatively charged ion PAM solution is 1 ‰-5 ‰.
Beneficial effect of the present invention is: sedimentation effect is good, and decolorizing effect is obvious, and production process is simple.
Embodiment
Further understand and be familiar with for making constitutional features of the present invention and the effect reached are had, being described in detail in order to preferred embodiment, being described as follows:
The preparation method of the coagulate decolourant that a kind of printing-dying wastewater recycling is processed comprises the following steps:
A, employing one-step technology add formaldehyde, Dyhard RU 100, ammonium chloride in reactor, stir it is mixed, and slowly heating;
When the Heating temperature of b, solution reaches 50-60 ℃, after carrying out natural reaction 1-2 hour, continue heated solution to 90-100 ℃, sustained reaction 2-4 hour;
C, when temperature is down to 40-50 ℃, after adding urea to react in the solution, then add negatively charged ion PAM solution.
D, be cooled to room temperature and barrelling.
Wherein, the weight part of formaldehyde is 15-25, and the weight part of Dyhard RU 100 is 20-40, and the weight part of ammonium chloride is 10-15, and the weight part of urea is 0-5, and the weight part of negatively charged ion PAM solution is 10-15.
In the present invention, the concentration of negatively charged ion PAM solution is 1 ‰-5 ‰, and efficiently taking off agent YNHB-C with printing and dyeing, to compare sedimentation effect better.
Embodiment 1
Adding weight part in reactor is that 15 formaldehyde, weight part are that 20 Dyhard RU 100, weight part are 10 ammonium chloride, stir it is mixed, and slowly heating; When the Heating temperature of solution is reached 50-60 ℃, after carrying out natural reaction 1-2 hour, continue heated solution to 90-100 ℃, sustained reaction 3 hours; When temperature was down to 40-50 ℃, adding weight part in the solution was after 4 urea reacts, then to add concentration be 1 ‰ negatively charged ion PAM solution, and standing 24 hours, the solution after filtration was efficient coagulate decolourant.
Embodiment 2
Adding weight part in reactor is that 20 formaldehyde, weight part are that 30 Dyhard RU 100, weight part are 10 ammonium chloride, stir it is mixed, and slowly heating; When the Heating temperature of solution is reached 50-60 ℃, after carrying out natural reaction 1-2 hour, continue heated solution to 90-100 ℃, sustained reaction 3 hours; When temperature was down to 40-50 ℃, adding weight part in the solution was after 4 urea reacts, then to add concentration be 2 ‰ negatively charged ion PAM solution, and standing 24 hours, the solution after filtration was efficient coagulate decolourant.
In the process of making coagulate decolourant, the weight part of formaldehyde is controlled at 15-25, the weight part of Dyhard RU 100 is controlled at 20-40, the weight part of ammonium chloride is controlled at 10-15, the weight part of urea is controlled at 0-5, the weight part of negatively charged ion PAM solution is controlled at 10-15, and the concentration of negatively charged ion PAM solution is controlled at 1 ‰-5 ‰ and namely can be made into efficient coagulate decolourant.
Above demonstration and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (3)
1. the preparation method of the coagulate decolourant of a printing-dying wastewater recycling processing, is characterized in that, comprises the following steps:
A, employing one-step technology add formaldehyde, Dyhard RU 100, ammonium chloride in reactor, stir it is mixed, and slowly heating;
When the Heating temperature of b, solution reaches 50-60 ℃, after carrying out natural reaction 1-2 hour, continue heated solution to 90-100 ℃, sustained reaction 2-4 hour;
C, when temperature is down to 40-50 ℃, after adding urea to react in the solution, then add negatively charged ion PAM solution;
D, be cooled to room temperature and barrelling.
2. the preparation method of the coagulate decolourant processed of a kind of printing-dying wastewater recycling according to claim 1, it is characterized in that, the weight part of described formaldehyde is 15-25, the weight part of described Dyhard RU 100 is 20-40, the weight part of described ammonium chloride is 10-15, the weight part of described urea is 0-5, and the weight part of described negatively charged ion PAM solution is 10-15.
3. the preparation method of the coagulate decolourant of a kind of printing-dying wastewater recycling processing according to claim 1, is characterized in that, the concentration of described negatively charged ion PAM solution is 1 ‰-5 ‰.
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| CN2013100868768A CN103172158A (en) | 2013-03-18 | 2013-03-18 | Preparation method of coagulation decolorant for reusing treatment of dyeing waste water |
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| CN2013100868768A CN103172158A (en) | 2013-03-18 | 2013-03-18 | Preparation method of coagulation decolorant for reusing treatment of dyeing waste water |
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Cited By (4)
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| CN103130315A (en) * | 2013-03-19 | 2013-06-05 | 绍兴伊诺环保科技有限公司 | Preparation method of coagulative decolorant for recycling dyeing wastewater |
| CN103641221A (en) * | 2013-11-30 | 2014-03-19 | 常熟市华宇针织印染有限公司 | Method for preparing coagulating and decolorizing agent for printing and dyeing wastewater treatment |
| CN105461033A (en) * | 2015-11-24 | 2016-04-06 | 朱正培 | Aluminium salt reinforcing agent and preparation method thereof |
| CN106241992A (en) * | 2016-09-16 | 2016-12-21 | 淄博鲁瑞精细化工有限公司 | The preparation method of textile printing and dyeing wastewater decolorization flocculation agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130315A (en) * | 2013-03-19 | 2013-06-05 | 绍兴伊诺环保科技有限公司 | Preparation method of coagulative decolorant for recycling dyeing wastewater |
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| CN105461033A (en) * | 2015-11-24 | 2016-04-06 | 朱正培 | Aluminium salt reinforcing agent and preparation method thereof |
| CN105461033B (en) * | 2015-11-24 | 2018-09-18 | 朱正培 | A kind of aluminium salt reinforcing agent and preparation method thereof |
| CN106241992A (en) * | 2016-09-16 | 2016-12-21 | 淄博鲁瑞精细化工有限公司 | The preparation method of textile printing and dyeing wastewater decolorization flocculation agent |
| CN106241992B (en) * | 2016-09-16 | 2019-01-29 | 淄博鲁瑞精细化工有限公司 | The preparation method of textile printing and dyeing wastewater decolorization flocculation agent |
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Application publication date: 20130626 |