CN104005241A - Tanning technique for filtering dyeing circulation wastewater at regular time - Google Patents
Tanning technique for filtering dyeing circulation wastewater at regular time Download PDFInfo
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- CN104005241A CN104005241A CN201410248565.1A CN201410248565A CN104005241A CN 104005241 A CN104005241 A CN 104005241A CN 201410248565 A CN201410248565 A CN 201410248565A CN 104005241 A CN104005241 A CN 104005241A
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- waste water
- dyeing
- wastewater
- regular time
- tanning
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Abstract
The invention provides a tanning technique for filtering dyeing circulation wastewater at regular time. The tanning technique is characterized in that the wastewater is circulated and reused in a dyeing procedure, the wastewater after each dyeing procedure is completed is collected for dyeing of a next batch of leather, and the waste solid needs to be filtered after the wastewater is circulated for 20-60 times or after 20-70 days. Complex procedures such as filtration and residue filtration are eliminated, so that not only is the working intensity of operators alleviated, but also the operation cost is lowered, the production of waste solid is reduced, and meanwhile, various property indexes of produced crust leather can all meet the requirements.
Description
Technical field
The present invention relates to leather industry dyeing waste-water cycling and reutilization field.
Background technology
In tanning dyeing process, waste water circulation technology realizes, but the processing procedure of waste water is comparatively complicated, causes technology stability poor, and as still needed filtration, filter residue supervisor, these programs have not only increased workman's labour intensity, and operating cost is high.
Summary of the invention
Object of the present invention: realize a kind of tanning technology of periodic filtering dye cycle waste water, substantially solved a difficult problem for dyeing course environmental pollution, and the crust leather property indices of producing thus all reaches requirement.
Technical scheme of the present invention is as follows:
A tanning technology for periodic filtering dye cycle waste water, is characterized in that in dyeing process, carrying out waste water circulation recycling, comprises the steps:
Collect the waste water after each dyeing process finishes, be placed on by color drum; For the dyeing of lower batch of skin; Waste water stirs before using; Circulation 20-60 time or 20-70 days needs filter useless solid thing.
The useless solid thing of above-mentioned filtration uses the equipment that aperture is 1mm-5mm to carry out, as filter screen; Collected waste water fully recovering, when waste water is not enough, uses fresh water to supplement.
Initial waste water used in the present invention comes from traditional dyeing process, and the formation situation of waste water is well known by persons skilled in the art; In dyeing process, used the chemical materials such as fatting agent, the organic dyeing auxiliaries of dye well, except a part is absorbed, the overwhelming majority enters in waste water, and these pollutants all belong to larger molecular organics, and concentration is high, but biodegradation rate is very slow.If this waste water discharges arbitrarily, not only environment is caused to great pollution, and can produce the great wasting of resources.
The present invention has following beneficial effect:
The present invention has realized a kind of tanning technology of periodic filtering dye cycle waste water, and can recycle by iterative cycles, sewage effluent hardly, save complicated filtration, filter residue supervisor, not only alleviate workman's labour intensity, and reduced operating cost, and having reduced the generation of useless solid thing simultaneously, the crust leather property indices of production all reaches requirement.
Brief description of the drawings
Accompanying drawing 1 is the schematic flow sheet of a kind of tanning technology of periodic filtering dye cycle waste water according to the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 and embodiment, the present invention is further described.
Embodiment
In dyeing process, dyeing waste-water enters dyeing waste-water pond, stirs, then be input to color drum by acid and alkali-proof pump, utilize the technique that waste water dyes to be: with shaving leather weighing scale, 80% dyeing waste-water, temperature is adjusted to 30 DEG C, and 1.5% compound fatting agent, turns 20 minutes; 4.0% double focusing cyanamide retanning agent, 1.5% wattle extract, 2.0% sulfiting vegetable oil, turns 40 minutes; 2.0% dyestuff, 0.5% dispersant, turns 60 minutes; 2.5% acrylic acid double tanning agent, turns 30 minutes; Waste filling liquid 120%, 1.2% sodium bicarbonate, temperature 45 C, turns 10 minutes; 1.0% formic acid, turns 30 minutes; Dyeing finishes waste water and enters wastewater disposal basin; Then carry out next process.
In the situation that not departing from spirit of the present invention or substantive features, can implement the present invention with other form, with reference to claim but not above-mentioned description, as instruction scope of the present invention.
Claims (1)
1. a tanning technology for periodic filtering dye cycle waste water, is characterized in that in dyeing process, carrying out waste water circulation recycling, comprises the steps: to collect the waste water after each dyeing process finishes, and is placed on by color drum; For the dyeing of lower batch of skin; Waste water stirs before using; Within circulation 20-60 time or 20-70 days, filter useless solid thing; Filtering useless solid thing uses the equipment that aperture is 1mm-5mm to carry out; Collected waste water fully recovering, when waste water is not enough, uses fresh water to supplement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248565.1A CN104005241A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for filtering dyeing circulation wastewater at regular time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248565.1A CN104005241A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for filtering dyeing circulation wastewater at regular time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104005241A true CN104005241A (en) | 2014-08-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410248565.1A Pending CN104005241A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for filtering dyeing circulation wastewater at regular time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104005241A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921881A (en) * | 2010-04-22 | 2010-12-22 | 张壮斗 | Novel process for recycling waste leather-making liquid step by step |
| CN102120664A (en) * | 2010-01-11 | 2011-07-13 | 张壮斗 | Process for recycling tanning waste liquid by steps |
| CN102535197A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning process indefinitely recycling waste liquid to perform dyeing |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
-
2014
- 2014-06-06 CN CN201410248565.1A patent/CN104005241A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120664A (en) * | 2010-01-11 | 2011-07-13 | 张壮斗 | Process for recycling tanning waste liquid by steps |
| CN101921881A (en) * | 2010-04-22 | 2010-12-22 | 张壮斗 | Novel process for recycling waste leather-making liquid step by step |
| CN102535197A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning process indefinitely recycling waste liquid to perform dyeing |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140827 |
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| WD01 | Invention patent application deemed withdrawn after publication |