CN103466767A - Coagulant for treating printing and dyeing wastewater and production method thereof - Google Patents
Coagulant for treating printing and dyeing wastewater and production method thereof Download PDFInfo
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- CN103466767A CN103466767A CN2013104217412A CN201310421741A CN103466767A CN 103466767 A CN103466767 A CN 103466767A CN 2013104217412 A CN2013104217412 A CN 2013104217412A CN 201310421741 A CN201310421741 A CN 201310421741A CN 103466767 A CN103466767 A CN 103466767A
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Abstract
The invention provides a coagulant for treating printing and dyeing wastewater and a production method thereof. The coagulant comprises the following components in percentage by weight based on the total mass of the coagulant: 70-80% of steel waste liquid, 15-22% of dilute acid solution and 5-12% of inorganic compound component, wherein the steel waste liquid comprises ferroferric oxide and ferric chloride, and the weight ratio of the ferrous chloride to the dilute acid solution is (1:2)-(3:5). The coagulant for treating printing and dyeing wastewater and the production method thereof provided by the invention have the characteristics of wide raw material source, waste utilization, low raw material cost and high COD removal rate.
Description
Technical field
The present invention relates to a kind of purifying liquid waste by coagulating agent machine production method, especially design a kind of coagulating agent and production method thereof for the treatment of of dyeing and printing.
Background technology
The waste water of dyeing waste water each workshop section's discharge in the dyeing and printing process process mixes.Dyeing waste water has that the water yield is large, colourity is high, complicated component, organic content are high, water quality and quantity change wait greatly too by.Its main component is fuel, slurry, fiber impurity and other organic and inorganic materials.
For the characteristics of dyeing waste water, the main coagulant sedimentation that adopts is as pretreated method at present.The coagulating agent used be take aluminium salt and molysite two class inorganic coagulants as main.Recently, about zinc salt, magnesium salts and silicate coagulating agent and compounding coagulation agent, to process the report of such waste water quite a few.Though these coagulating agent have their own characteristics each, but generally or COD high in processing cost and colourity, except shortcomings such as rate are limited, have limited it and have applied.Therefore be badly in need of the dyeing water treatment coagulating agent of a kind of inexpensive, efficient, wide spectrum of research and development.
The iron and steel waste liquid is a kind of solution state waste produced in a kind of metallurgical technology process, and enormous amount is serious to pollution and the harm of environment.Both at home and abroad all in the method for finding suitable comprehensive utilization iron and steel solution.The technological method that iron and steel solution is turned waste into wealth.
Summary of the invention
The deficiency existed for prior art, the object of the present invention is to provide that a kind of to have starting material wide, and be utilization of waste material, and material cost is low, the coagulating agent of the treatment of dyeing and printing that the COD clearance is high and production method.
Technical scheme of the present invention is achieved in that a kind of coagulant for disposing dying waste water, its composition and weight percentage are divided into: the iron and steel waste liquid that accounts for coagulating agent total mass 70%-80%, account for the dilute acid soln of coagulating agent total mass 15%-22%, account for the inorganic composite composition of coagulating agent total mass 5%-12%; Described iron and steel waste liquid is comprising Z 250 and iron(ic) chloride composition; The weight proportion of described iron protochloride and dilute acid soln is 1:2～3:5.
Above-mentioned a kind of coagulant for disposing dying waste water, described dilute acid soln is mineral acid, has precedence over hydrogen peroxide, its concentration is 2～4mol/L.
Above-mentioned a kind of coagulant for disposing dying waste water, described inorganic being re-dubbed is divided into magnesium salts.
A kind of production method of coagulant for disposing dying waste water, its step comprises:
A. at the iron and steel waste liquid that accounts for coagulating agent total mass 70%-80%, under whipped state, add iron sheet or iron filings to carry out redox reaction;
B. by the cooling 5-7 hour of above-mentioned solution, after the metal ion complete reaction, at the inorganic composite composition that adds coagulating agent total mass 5%-12%, the tawny suspension liquid that to obtain PH be 3.5-4.5, be required coagulating agent.
Above-mentioned a kind of coagulant for disposing dying waste water and production method thereof, described inorganic being re-dubbed are divided into magnesium salts.
The coagulating agent of a kind for the treatment of of dyeing and printing of the present invention and production method thereof, have starting material wide, and be utilization of waste material, and material cost is low, the characteristics that the COD clearance is high.
Embodiment
Technical scheme in the embodiment of the present invention is clearly and completely described, and obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
A kind of coagulant for disposing dying waste water, its composition and weight percentage are divided into: account for the iron and steel waste liquid of coagulating agent total mass 70%-80%, account for the dilute acid soln of coagulating agent total mass 15%-22%, account for the inorganic composite composition of coagulating agent total mass 5%-12%; Described iron and steel waste liquid is comprising Z 250 and iron(ic) chloride composition; The weight proportion of described iron protochloride and dilute acid soln is 1:2～3:5.
Above-mentioned a kind of coagulant for disposing dying waste water, described dilute acid soln is mineral acid, has precedence over hydrogen peroxide, its concentration is 2～4mol/L.
Above-mentioned a kind of coagulant for disposing dying waste water, described inorganic being re-dubbed is divided into magnesium salts.
A kind of production method of coagulant for disposing dying waste water, its step comprises:
A. at the iron and steel waste liquid that accounts for coagulating agent total mass 70%-80%, under whipped state, add iron sheet or iron filings to carry out redox reaction;
B. by the cooling 5-7 hour of above-mentioned solution, after the metal ion complete reaction, at the inorganic composite composition that adds coagulating agent total mass 5%-12%, the tawny suspension liquid that to obtain PH be 3.5-4.5, be required coagulating agent.
Inorganic being re-dubbed of the production method of above-mentioned described a kind of described coagulant for disposing dying waste water is divided into magnesium salts
Embodiment 1:
A kind of coagulant for disposing dying waste water, take out the iron and steel waste liquid of total mass 70%, take out the dilute acid soln of total mass 15% and the inorganic composite composition of taking-up quality 5% and put into the reaction tank the inside, now described iron and steel waste liquid is comprising Z 250, iron(ic) chloride composition; In the reaction tank the inside, iron plate and ferric chloride Solution react to obtain solution of ferrous chloride, then by the weight proportion of described iron protochloride and dilute acid soln, be 1:2～3:5, the iron protochloride that can extract the 5ml volume, with in the bucket of packing into after the hydrogen peroxide of 15ml volume mixes, so becomes a kind of coagulating agent.
Above-mentioned a kind of coagulant for disposing dying waste water, described dilute acid soln are mineral acid, have precedence over hydrogen peroxide, and its concentration is 2mol/L.
Above-mentioned a kind of coagulant for disposing dying waste water, described inorganic being re-dubbed are divided into magnesium salts.
A kind of production method of coagulant for disposing dying waste water, its step comprises:
A. account for the iron and steel waste liquid of coagulating agent total mass 70%, under whipped state, adding iron sheet or iron filings to carry out redox reaction;
B. by cooling 5 hours of above-mentioned solution, after the metal ion complete reaction, at the inorganic composite composition that adds coagulating agent total mass 5%, the tawny suspension liquid that to obtain PH be 3.5, be required coagulating agent.
In the production method of above-mentioned a kind of coagulant for disposing dying waste water, described inorganic being re-dubbed be divided into magnesium salts.
Embodiment 2:
A kind of coagulant for disposing dying waste water, take out the iron and steel waste liquid of total mass 80%, take out the dilute acid soln of total mass 22% and the inorganic composite composition of taking-up quality 12% and put into the reaction tank the inside, now described iron and steel waste liquid is comprising Z 250, iron(ic) chloride composition; In the reaction tank the inside, iron plate and ferric chloride Solution react to obtain solution of ferrous chloride, then by the weight proportion of described iron protochloride and dilute acid soln, be 1:2～3:5, the iron protochloride that can extract the 10ml volume, with in the bucket of packing into after the hydrogen peroxide of 25ml volume mixes, so becomes a kind of coagulating agent.
Above-mentioned a kind of coagulant for disposing dying waste water, described dilute acid soln are mineral acid, have precedence over hydrogen peroxide, and its concentration is 4mol/L.
Above-mentioned a kind of coagulant for disposing dying waste water, described inorganic being re-dubbed are divided into magnesium salts.
A kind of production method of coagulant for disposing dying waste water, its step comprises:
A. account for the iron and steel waste liquid of coagulating agent total mass 80%, under whipped state, adding iron sheet or iron filings to carry out redox reaction;
B. by cooling 7 hours of above-mentioned solution, after the metal ion complete reaction, at the inorganic composite composition that adds coagulating agent total mass 12%, the tawny suspension liquid that to obtain PH be 4.5, be required coagulating agent.
The production method of above-mentioned a kind of coagulant for disposing dying waste water, described inorganic being re-dubbed are divided into magnesium salts.
The coagulating agent of a kind for the treatment of of dyeing and printing of the present invention and production method thereof, have starting material wide, and be utilization of waste material, and material cost is low, the characteristics that the COD clearance is high.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a coagulant for disposing dying waste water, it is characterized in that, its composition and weight percentage are divided into: account for the iron and steel waste liquid of coagulating agent total mass 70%-80%, account for the dilute acid soln of coagulating agent total mass 15%-22%, account for the inorganic composite composition of coagulating agent total mass 5%-12%; Described iron and steel waste liquid is comprising Z 250 and iron(ic) chloride composition; The weight proportion of described iron protochloride and dilute acid soln is 1:2～3:5.
2. coagulant for disposing dying waste water according to claim 1, it is characterized in that: described dilute acid soln is mineral acid, has precedence over hydrogen peroxide, its concentration is 2～4mol/L.
3. coagulant for disposing dying waste water according to claim 1, it is characterized in that: described inorganic being re-dubbed is divided into magnesium salts.
4. the production method of a coagulant for disposing dying waste water as claimed in claim 1, its step comprises:
A. at the iron and steel waste liquid that accounts for coagulating agent total mass 70%-80%, under whipped state, add iron sheet or iron filings to carry out redox reaction;
B. by the cooling 5-7 hour of above-mentioned solution, after the metal ion complete reaction, at the inorganic composite composition that adds coagulating agent total mass 5%-12%, the tawny suspension liquid that to obtain PH be 3.5-4.5, be required coagulating agent.
5. the production method of coagulant for disposing dying waste water according to claim 4, it is characterized in that: described inorganic being re-dubbed is divided into magnesium salts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104217412A CN103466767A (en) | 2013-03-19 | 2013-09-16 | Coagulant for treating printing and dyeing wastewater and production method thereof |
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| CN201310088122.6 | 2013-03-19 | ||
| CN201310088122 | 2013-03-19 | ||
| CN2013104217412A CN103466767A (en) | 2013-03-19 | 2013-09-16 | Coagulant for treating printing and dyeing wastewater and production method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192963A (en) * | 2014-09-04 | 2014-12-10 | 隋涛 | Coagulant for treating spinning, printing and dyeing wastewater |
| CN104402102A (en) * | 2014-12-09 | 2015-03-11 | 浙江省环境保护科学设计研究院 | Enhanced pre-treatment coagulant for printing and dyeing wastewater and preparation method of enhanced pre-treatment coagulant |
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| JP2000191328A (en) * | 1998-12-25 | 2000-07-11 | Taki Chem Co Ltd | Production of ferric sulfate solution |
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2013
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192963A (en) * | 2014-09-04 | 2014-12-10 | 隋涛 | Coagulant for treating spinning, printing and dyeing wastewater |
| CN104192963B (en) * | 2014-09-04 | 2016-09-07 | 滨州学院 | A kind of process textile printing and dyeing wastewater coagulant |
| CN104402102A (en) * | 2014-12-09 | 2015-03-11 | 浙江省环境保护科学设计研究院 | Enhanced pre-treatment coagulant for printing and dyeing wastewater and preparation method of enhanced pre-treatment coagulant |
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Application publication date: 20131225 |