CN102535197A - Tanning process indefinitely recycling waste liquid to perform dyeing - Google Patents
Tanning process indefinitely recycling waste liquid to perform dyeing Download PDFInfo
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- CN102535197A CN102535197A CN2011100089365A CN201110008936A CN102535197A CN 102535197 A CN102535197 A CN 102535197A CN 2011100089365 A CN2011100089365 A CN 2011100089365A CN 201110008936 A CN201110008936 A CN 201110008936A CN 102535197 A CN102535197 A CN 102535197A
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- waste liquid
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Abstract
A tanning process indefinitely recycling waste liquid to perform dyeing is characterized in that indefinite recycling of all the waste liquid is achieved, using quantities of dyes and relevant chemical engineering materials are greatly reduced, and the relevant chemical engineering materials are saved by 40% to 60%.
Description
Technical field
The invention belongs in the leather production technical field and make full use of raw material, reduce the green circulation technology of disposal of pollutants, release here and recycle the leather-making technology that waste liquid dyes a kind of indefinite duration.
Background technology
Now, China has become the leather big producing country that generally acknowledges in the world, and still, developing rapidly of leather industry also caused serious environmental pollution, the wasting of resources and ecological disruption.Every kilogram of leather produces dyeing waste-water 2-3L in dyeing course, and water quality is the acid waste water of pH3.5-4.5, BOD500-2000mg/L, total solid 4000-8000mg/L.In dyeing process, used chemical materials such as fatting agent, the organic dyeing auxiliaries of dye well, except that a part was absorbed, the overwhelming majority got in the waste water; In addition, have a large amount of animal proteins and colloid also can dissolve in the waste water in the raw hide, these pollutants all belong to larger molecular organics; Concentration is high, but biological very slow except that separating speed, if the dyeing waste liquid discharges arbitrarily; Not only environment is caused great pollution, and can produce the great wasting of resources.
For the processing method of dyeing waste-water, begin the external seventies in 20th century to explore and application, comprising flocculation sediment, chemical oxidation, burning and aerobe technology; Domestic also have some researchs and use, but practice shows: single physics, chemistry or traditional biological treatment, and all undesirable at aspects such as the efficient of removing colourity and toxic organic compound, operating costs, can't reach real pollution treatment purpose.
Summary of the invention
The object of the invention: recycle the dyeing waste liquid indefinite duration; Outside removing the normal volatilization under the nature and inevitably spilling; The rate of recovery of waste liquid can reach 100%, has thoroughly eradicated the right problem of serious dirt that the dyeing discharging of waste liquid brings, a large amount of simultaneously relevant chemical materials of dye well of practicing thrift.Practice thrift relevant chemical materials 40%-60%, and guarantee Color, the finished product of producing thus leather each item performance indications all reach requirement, and have improved the degree of packing and the richness of finished leather.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
At the other a plurality of waste liquid liquid storage tanks (different color and lusters adopt different liquid storage tanks) that are provided with of color drum, from entering corresponding color and luster liquid storage tank behind the solid content in the waste liquid elimination waste liquid of dyeing process, stir, to be ready for use on down batch dyeing of shaving leather; Utilize the dyeing waste liquid to carry out dyeing to be: in shaving leather weight, the 3-200% waste liquid that dye, temperature transfers to 30 ℃, 0.5-5.0% acrylic acid double tanning agent, rotary drum rotation 15 minutes-40 minutes; 0.5-6.0% double focusing cyanamide retanning agent, the 0.5-5.0% wattle extract, 0.5-4.0% sulfiting vegetable oil changeed 30 minutes-60 minutes; The 0.5-4.0% dyestuff, the compound fatting agent of 0.5-5.0% changeed 40 minutes-80 minutes.Require: pH value 3.0-7.0, otch passes through the heart.
This such scheme; The consumption of various chemical materials and kind, waste liquid consumption, heating and cooling amplitude, operating time, operating sequence etc. all can be made adjustment significantly according to user's concrete condition, also can select other chemical material to substitute above-mentioned material according to user's concrete condition.The percentage of used chemical materials is in the weight of shaving leather.
The specific embodiment
Through instance the present invention is carried out concrete description and further explanation below.
Embodiment
Technology is: 80% dyeing waste liquid, and temperature transfers to 30 ℃, 2.5% acrylic acid double tanning agent, rotary drum rotated 20 minutes; 4.0% double focusing cyanamide retanning agent, 1.5% wattle extract, 2.0% sulfiting vegetable oil, 40 minutes; 2.0% dyestuff, 1.5% compound fatting agent changeed 60 minutes.Require: otch passes through the heart.
Under the situation that does not break away from spirit of the present invention or substantive features, can be with other form embodiment of the present invention, with reference to claim but not above-mentioned specification, as indication scope of the present invention.
Claims (6)
1. at the other a plurality of waste liquid liquid storage tanks (different color and lusters adopt different liquid storage tanks) that are provided with of color drum, from entering corresponding color and luster liquid storage tank behind the solid content in the waste liquid elimination waste liquid of dyeing process, stir, to be ready for use on down batch dyeing of shaving leather; Utilize the dyeing waste liquid to carry out dyeing to be: in shaving leather weight, the 3-200% waste liquid that dye, temperature transfers to 30 ℃, 0.5-5.0% acrylic acid double tanning agent, rotary drum rotation 15 minutes-40 minutes; 0.5-6.0% double focusing cyanamide retanning agent, the 0.5-5.0% wattle extract, 0.5-4.0% sulfiting vegetable oil changeed 30 minutes-60 minutes; The 0.5-4.0% dyestuff, the compound fatting agent of 0.5-5.0% changeed 40 minutes-80 minutes.Require: pH value 3.0-7.0, otch passes through the heart.
2. experiment showed, that through nearly 1 year big production this waste liquid circulating technology is fit to the existing big technological process of production of tannery.
3. recycle the dyeing waste liquid indefinite duration and dye, when press filtration is carried out in circulation after a period of time, slagging-off supervisor continued recycles.
4. the consumption of the various chemical materials in the right 1 and kind, waste liquid consumption, heating and cooling amplitude, operating time, operating sequence etc. all can be made adjustment significantly according to user's concrete condition, also can select other chemical material to substitute above-mentioned material according to user's concrete condition.
5. the percentage in the right 1 is in the weight of shaving leather.
6. a plurality of waste liquid liquid storage tanks (different color and lusters adopt different liquid storage tanks) are set on the color drum side, and acid-proof pump are set in order to pumping waste liquid usefulness.Agitating device is set, also available manual stirring in the waste liquid pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100089365A CN102535197A (en) | 2010-12-14 | 2011-01-06 | Tanning process indefinitely recycling waste liquid to perform dyeing |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010592303 | 2010-12-14 | ||
| CN201010592303.9 | 2010-12-14 | ||
| CN2011100089365A CN102535197A (en) | 2010-12-14 | 2011-01-06 | Tanning process indefinitely recycling waste liquid to perform dyeing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102535197A true CN102535197A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100089365A Pending CN102535197A (en) | 2010-12-14 | 2011-01-06 | Tanning process indefinitely recycling waste liquid to perform dyeing |
Country Status (1)
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| CN (1) | CN102535197A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005241A (en) * | 2014-06-06 | 2014-08-27 | 张壮斗 | Tanning technique for filtering dyeing circulation wastewater at regular time |
| WO2014169564A1 (en) * | 2013-04-18 | 2014-10-23 | Zhang Zhuangdou | Tannery waste liquid step-by-step recycling process having improved effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486514A (en) * | 2009-02-26 | 2009-07-22 | 温州大学 | Wet finishing workshop section wastewater treatment and reclaimed water recycling process for leather |
| CN101798605A (en) * | 2010-03-16 | 2010-08-11 | 浙江通天星集团股份有限公司 | Energy saving and emission reduction method for retanning and dyeing high-strength cow split leather furniture |
| CN102120664A (en) * | 2010-01-11 | 2011-07-13 | 张壮斗 | Process for recycling tanning waste liquid by steps |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
-
2011
- 2011-01-06 CN CN2011100089365A patent/CN102535197A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486514A (en) * | 2009-02-26 | 2009-07-22 | 温州大学 | Wet finishing workshop section wastewater treatment and reclaimed water recycling process for leather |
| CN102120664A (en) * | 2010-01-11 | 2011-07-13 | 张壮斗 | Process for recycling tanning waste liquid by steps |
| CN101798605A (en) * | 2010-03-16 | 2010-08-11 | 浙江通天星集团股份有限公司 | Energy saving and emission reduction method for retanning and dyeing high-strength cow split leather furniture |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169564A1 (en) * | 2013-04-18 | 2014-10-23 | Zhang Zhuangdou | Tannery waste liquid step-by-step recycling process having improved effect |
| CN104005241A (en) * | 2014-06-06 | 2014-08-27 | 张壮斗 | Tanning technique for filtering dyeing circulation wastewater at regular time |
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Application publication date: 20120704 |