CN103981299A - Tanning technique for regularly filtering reashing circulating wastewater - Google Patents
Tanning technique for regularly filtering reashing circulating wastewater Download PDFInfo
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- CN103981299A CN103981299A CN201410248562.8A CN201410248562A CN103981299A CN 103981299 A CN103981299 A CN 103981299A CN 201410248562 A CN201410248562 A CN 201410248562A CN 103981299 A CN103981299 A CN 103981299A
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- waste water
- reashing
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- circulating
- wastewater
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Abstract
The invention provides a tanning technique for regularly filtering reashing circulating wastewater, which is characterized by circulating and reutilizing wastewater in the reashing process, wherein the wastewater after each reashing process is collected for reashing the next batch of leather, and solid waste needs to be filtered after circulating for 15-60 times or 15-70 days. The technique saves the complicated processes of filtering, residue filtration and the like, thereby reducing the labor intensity of workers, lowering the operating cost and reducing the generation of the solid waste; and the performance indexes of the produced ashed leather satisfy the requirements.
Description
Technical field
The present invention relates to the multiple grey waste water circulation recycling of leather industry field.
Background technology
In the multiple grey process of process hides, waste water circulation technology realizes, but the treating processes of waste water is comparatively complicated, cause technology stability poor, as still needed filtration, filter residue supervisor, cause technology stability poor, these programs have not only increased workman's labour intensity, and running cost is high.
Summary of the invention
Object of the present invention: realize the tanning technology of the multiple grey recycling waste water of a kind of periodic filtering, substantially solved a difficult problem for multiple grey process environmental pollution, and the graywall property indices of producing thus all reaches requirement.
Technical scheme of the present invention is as follows:
A tanning technology for the multiple grey recycling waste water of periodic filtering, is characterized in that in multiple ash process, carrying out waste water circulation recycling, comprises the steps:
Collect the waste water after each ash process again finishes, be placed on by multiple grey rotary drum or paddle-tumble; For the multiple ash of lower batch of skin; Waste water stirs before using; Circulation 25-70 time or 25-80 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 multiple ash process, and the formation situation of waste water is well known by persons skilled in the art; In waste water, contain grease and degradation production thereof, salt, lime, multiple grey agent, S
2-, OH
-, Na
+, Ca
2+, protein and degradation production, enzyme and amine substance etc., if above 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 the tanning technology of the multiple grey recycling waste water of a kind of periodic filtering, and can recycle by iterative cycles, sewage effluent hardly, save complicated filtration, filter residue supervisor, not only alleviate workman's labour intensity, and reduced running cost, and having reduced the generation of useless solid thing simultaneously, the graywall property indices of production all reaches requirement.
Brief description of the drawings
Accompanying drawing 1 is the schematic flow sheet of the tanning technology of the multiple grey recycling waste water of a kind of periodic filtering according to the present invention.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the present invention is further described.
Embodiment
In multiple ash process, multiple grey waste water enters multiple grey wastewater disposal basin, stirs, then be input to multiple grey rotary drum by lye pump, the multiple grey waste water of utilization carries out multiple grey technique and is: with raw hide weighing scale, and 100% multiple grey waste water, 0.9% lime, 0.25% sodium sulphite, 0.5% auxiliary liming agent, turns 20 minutes/stop 20 minutes, then often turns 8 minutes/stop 52 minutes, turn and stop, in conjunction with carrying out 5 times, spending the night; Multiple ash finishes waste water and enters wastewater disposal basin.Multiple ash finishes waste water and enters wastewater disposal basin; Graywall is carried out to fleshing split, 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 specification sheets, as instruction scope of the present invention.
Claims (1)
1. a tanning technology for the multiple grey recycling waste water of periodic filtering, is characterized in that in multiple ash process, carrying out waste water circulation recycling, comprises the steps: to collect the waste water after each ash process again finishes, and is placed on by multiple grey rotary drum or paddle-tumble; For the multiple ash of lower batch of skin; Waste water stirs before using; Within circulation 25-70 time or 25-80 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 |
|---|---|---|---|
| CN201410248562.8A CN103981299A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering reashing circulating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248562.8A CN103981299A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering reashing circulating wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103981299A true CN103981299A (en) | 2014-08-13 |
Family
ID=51273470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410248562.8A Pending CN103981299A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering reashing circulating wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103981299A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423875A (en) * | 2008-10-21 | 2009-05-06 | 温州大学 | Process technology for recycling and reuse waste chrome liquor in retanning |
| CN102505057A (en) * | 2011-10-21 | 2012-06-20 | 中国皮革和制鞋工业研究院 | Cyclic utilization method of chrome tanning waste liquid |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
| CN103663765A (en) * | 2012-08-30 | 2014-03-26 | 浙江中辉皮草有限公司 | Treatment method of recycling fur chromium retanning liquid for plurality of times |
-
2014
- 2014-06-06 CN CN201410248562.8A patent/CN103981299A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423875A (en) * | 2008-10-21 | 2009-05-06 | 温州大学 | Process technology for recycling and reuse waste chrome liquor in retanning |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
| CN102505057A (en) * | 2011-10-21 | 2012-06-20 | 中国皮革和制鞋工业研究院 | Cyclic utilization method of chrome tanning waste liquid |
| CN103663765A (en) * | 2012-08-30 | 2014-03-26 | 浙江中辉皮草有限公司 | Treatment method of recycling fur chromium retanning liquid for plurality of times |
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|---|---|---|---|
| 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: 20140813 |
|
| WD01 | Invention patent application deemed withdrawn after publication |