CN104016462A - Method for preparing recycled water decolorizing agent - Google Patents
Method for preparing recycled water decolorizing agent Download PDFInfo
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- CN104016462A CN104016462A CN201410270576.XA CN201410270576A CN104016462A CN 104016462 A CN104016462 A CN 104016462A CN 201410270576 A CN201410270576 A CN 201410270576A CN 104016462 A CN104016462 A CN 104016462A
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Abstract
The invention discloses a method for preparing a recycled water decolorizing agent. The method comprises the following steps: by adopting an one-step process, adding the following components in parts by mass into a reactor: 6-9 parts of formaldehyde, 8-9 parts of dicyandiamide, 4-8 parts of ammonium chloride and 18-30 parts of water, uniformly stirring and mixing, heating to 70-80 DEG C, reacting for 2.5-3 hours, cooling to room temperature to obtain the recycled water decolorizing agent. The method disclosed by the invention has the advantages that the problem that an ideal recycled water decolorizing agent lacks at present is solved and the obtained decolorizing agent is remarkable in decolorizing effect; compared with the existing decolorizing agents, the obtained decolorizing agent has the advantages that the preparation process is simpler, the precipitation property of producing floccule is more excellent and the flocculation cost is reduced; the method can be combined with existing treatment processes of water works and is wide in applicability; the obtained decolorizing agent is simple in preparation process and rapid in decolorizing process, so that the method has a positive significance on colority emergency treatment of the water works.
Description
Technical field
The invention relates to reused water processing, particularly a kind of preparation method of organic-flocculation discoloring agent.
Background technology
The use of reuse water, to solving city supply and demand water contradiction, is saved the aspects such as traditional water resources quantity significant, and therefore it is subject to people's attention day by day as the emerging water source of one.But in current reused water processing process, because water inlet composition is comparatively complicated, wherein contain some chemical substance and cause into water colourity too high.For these chemical substances, after adopting conventional regeneration water technology to process, the effluent color dilution of supplying with user is difficult to reach standard-required.In the past in water treatment the development of discoloring agent seldom for reuse water as research object, and at present conventional discoloring agent exists production process comparatively complicated, cost is higher, the flco that the flocculation stage forms is tiny, is difficult to the shortcomings such as clarification.
Summary of the invention
Object of the present invention, is the present situation for a kind of comparatively desirable reuse water discoloring agent of current shortage, and a kind of preparation method of the good discoloring agent for reused water processing is provided.The present invention, effectively solving on the basis of reuse water decolorizing effect, compares with existing discoloring agent, and preparation technology is simpler, and the sedimentation function that produces flocs unit is more excellent, greatly reduces flocculation cost.
The present invention is achieved by following technical solution:
A preparation method for reuse water discoloring agent, step is as follows:
(1) adopt one-step technology, in reactor, adding mass fraction is the formaldehyde of 6～9 parts, the Dyhard RU 100 of 8～9 parts, and the ammonium chloride of 4～8 parts, the water of 18～30 parts, is uniformly mixed;
(2) solution step (1) being mixed is heated to 70～80 DEG C, reacts 2.5～3 hours;
(3) treat that the reacted solution of step (2) is cooled to room temperature, makes reuse water discoloring agent.
It is the formaldehyde of 7 parts that described step (1) adds mass fraction in reactor, the Dyhard RU 100 of 8.5 parts, the ammonium chloride of 5.5 parts, the water of 20 parts.
The solution Heating temperature of described step (2) is 70 DEG C, reacts 3 hours.
Beneficial effect of the present invention is as follows:
1. discoloring agent of the present invention has good decolorizing effect to the higher reused water processing of colourity, and manufacture craft is simple, uses raw material few, and the reaction times is short, reaction conditions gentleness, and the sedimentation function excellence of flocs unit, has reduced flocculation cost.
The present invention adopts visual platinum cobalt colorimetry to carry out colourity measurement, in the time that reuse water water inlet colourity is 120 degree left and right, by adding discoloring agent of the present invention, and coordinates current coagulation, the depositing technology of regeneration water factory, settling tank effluent color dilution to be reduced to 50 degree left and right.And if do not add discoloring agent of the present invention, only by existing coagulation, depositing technology, it is less that settling tank effluent color dilution changes, only in 100～110 degree left and right.Therefore fully proved that decolorizing effect of the present invention is remarkable.Meanwhile, after reuse water colourity significantly being declined by interpolation discoloring agent, can effectively prevent the pollution of reverse osmosis membrane, protection reverse osmosis membrane is had to positive effect.In addition, in ozonation technology, can relatively reduce the ozone amount passing into, reduce the expensive electricity charge cost of preparing ozone needs.
Dyhard RU 100-formaldehyde discoloring agent used in sewage disposal at present, its complex manufacturing technology, for multistage heats up (as two-section type heats up or syllogic intensification) to more than 90 DEG C, and every period of lower reaction times of temperature need to continue 2～3 hours, temperature control is loaded down with trivial details, long reaction time.The present invention adopts and is directly warming up to steady temperature, then sustained reaction 2.5～3 hours, and the reaction times shortens.Reduce energy consumption cost.
Dyhard RU 100-yuban discoloring agent solution of prior art, in the time that its solids content is 60%, price is about 4300 yuan/ton; Discoloring agent of the present invention is in the time that solids content is 60%, and cost is 3000～4000 yuan/ton.
2. discoloring agent can add on the regeneration existing technique of water factory basis, does not need water factory to carry out large-scale redevelopment.Discoloring agent added together with existing coagulating agent in the coagulation stage, did not affect the existing any treatment process of regeneration water factory, and it can commonly use coagulating agent good combination with water factory, reaches better decolorizing effect, and suitability is wide.
3. discoloring agent of the present invention can store the long period and never degenerates, and still has good decolorizing effect.Because discoloring agent preparation is simple, quick, play very soon decolorization after dropping in reuse water, there is positive effect for the colourity emergency processing of water factory.
When regeneration water factory runs into into water colourity very highly, adopt conventional treatment method cannot make effluent color dilution reach required standard time, now add discoloring agent of the present invention, can play the effect of quick decolouring.
Embodiment
The present invention is raw materials used is commercially available analytical reagent, and below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
In reactor, add 7 mass parts formaldehyde, 8.5 mass parts Dyhard RU 100s, 5.5 mass parts ammonium chlorides and 20 mass parts water, stir, dissolve, and medicament is fully mixed.Reactor is heated to 70 DEG C again, reacts 3 hours.After question response finishes, the discoloring agent obtaining is cooled to room temperature barrelling.
Be 60% to calculate according to solids content, present method discoloring agent preparation cost is about 3800 yuan/ton.When regeneration water factory, water inlet colourity is 120 degree, and when discoloring agent dosage is 0.1mL/L with the ratio of flooding velocity, by adding after the discoloring agent coagulation that also cooperation regeneration water factory is being used at present, depositing technology, settling tank effluent color dilution is reduced to 40 degree.
Embodiment 2
In reactor, add 8 mass parts formaldehyde, 8.5 mass parts Dyhard RU 100s, 4 mass parts ammonium chlorides and 26 mass parts water, stir, dissolve, medicament is fully mixed.Reactor is heated to 75 DEG C again, reacts 3 hours.After question response finishes, the discoloring agent obtaining is cooled to room temperature barrelling.
Be 60% to calculate according to solids content, present method discoloring agent preparation cost is about 3900 yuan/ton.When regeneration water factory, water inlet colourity is 120 degree, and when discoloring agent dosage is 0.1mL/L with the ratio of flooding velocity, by adding after the discoloring agent coagulation that also cooperation regeneration water factory is being used at present, depositing technology, settling tank effluent color dilution is reduced to 55 degree.
Embodiment 3
In reactor, add 8.7 mass parts formaldehyde, 8.5 mass parts Dyhard RU 100s, 4 mass parts ammonium chlorides and 23 mass parts water, stir, dissolve, medicament is fully mixed.Reactor is heated to 80 DEG C again, reacts 3 hours.After question response finishes, the discoloring agent obtaining is cooled to room temperature barrelling.
Be 60% to calculate according to solids content, present method discoloring agent preparation cost is about 3900 yuan/ton.When regeneration water factory, water inlet colourity is 120 degree, and when discoloring agent dosage is 0.1mL/L with the ratio of flooding velocity, by adding after the discoloring agent coagulation that also cooperation regeneration water factory is being used at present, depositing technology, settling tank effluent color dilution is reduced to 50 degree.
Embodiment 4
In reactor, add 8.7 mass parts formaldehyde, 8.5 mass parts Dyhard RU 100s, 6.7 mass parts ammonium chlorides and 27 mass parts water, stir, dissolve, medicament is fully mixed.Reactor is heated to 70 DEG C again, reacts 3 hours.After question response finishes, the discoloring agent obtaining is cooled to room temperature barrelling.
Be 60% to calculate according to solids content, present method discoloring agent preparation cost is about 3600 yuan/ton.When regeneration water factory, water inlet colourity is 120 degree, and when discoloring agent dosage is 0.1mL/L with the ratio of flooding velocity, by adding after the discoloring agent coagulation that also cooperation regeneration water factory is being used at present, depositing technology, settling tank effluent color dilution is reduced to 50 degree.
Claims (3)
1. a preparation method for reuse water discoloring agent, has following steps:
(1) adopt one-step technology, in reactor, adding mass fraction is the formaldehyde of 6～9 parts, the Dyhard RU 100 of 8～9 parts, and the ammonium chloride of 4～8 parts, the water of 18～30 parts, is uniformly mixed;
(2) solution step (1) being mixed is heated to 70～80 DEG C, reacts 2.5～3 hours;
(3) treat that the reacted solution of step (2) is cooled to room temperature, makes reuse water discoloring agent.
2. the preparation method of a kind of reuse water discoloring agent according to claim 1, is characterized in that, it is the formaldehyde of 7 parts that described step (1) adds mass fraction in reactor, the Dyhard RU 100 of 8.5 parts, the ammonium chloride of 5.5 parts, the water of 20 parts.
3. the preparation method of a kind of reuse water discoloring agent according to claim 1, is characterized in that, the solution Heating temperature of described step (2) is 70 DEG C, reacts 3 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410270576.XA CN104016462B (en) | 2014-06-17 | 2014-06-17 | A kind of preparation method of reuse water discoloring agent |
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| CN201410270576.XA CN104016462B (en) | 2014-06-17 | 2014-06-17 | A kind of preparation method of reuse water discoloring agent |
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| CN104016462A true CN104016462A (en) | 2014-09-03 |
| CN104016462B CN104016462B (en) | 2015-11-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600901A (en) * | 2015-12-18 | 2016-05-25 | 天津大学 | Preparation method of ammonium chloride-modified melamine resin decolorant |
| CN107720843A (en) * | 2017-10-31 | 2018-02-23 | 江苏工程职业技术学院 | A kind of synthesis technique of reactive dyed wastewater high-efficiency decolorant |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129676A (en) * | 1995-02-20 | 1996-08-28 | 化学工业部天津化工研究院 | Preparation and application of high performance decolourizing flocculent |
| CN1607185A (en) * | 2003-10-15 | 2005-04-20 | 广东工业大学 | Production method of printing and dyeing wastewater coagulate decolourizer |
-
2014
- 2014-06-17 CN CN201410270576.XA patent/CN104016462B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129676A (en) * | 1995-02-20 | 1996-08-28 | 化学工业部天津化工研究院 | Preparation and application of high performance decolourizing flocculent |
| CN1607185A (en) * | 2003-10-15 | 2005-04-20 | 广东工业大学 | Production method of printing and dyeing wastewater coagulate decolourizer |
Non-Patent Citations (1)
| Title |
|---|
| 周雄: "印染废水脱色絮凝剂的研究", 《印染助剂》, vol. 23, no. 11, 30 November 2006 (2006-11-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600901A (en) * | 2015-12-18 | 2016-05-25 | 天津大学 | Preparation method of ammonium chloride-modified melamine resin decolorant |
| CN107720843A (en) * | 2017-10-31 | 2018-02-23 | 江苏工程职业技术学院 | A kind of synthesis technique of reactive dyed wastewater high-efficiency decolorant |
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| CN104016462B (en) | 2015-11-04 |
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