CN103981298A - Tanning technique for regularly filtering soaking circulating wastewater - Google Patents
Tanning technique for regularly filtering soaking circulating wastewater Download PDFInfo
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- CN103981298A CN103981298A CN201410248561.3A CN201410248561A CN103981298A CN 103981298 A CN103981298 A CN 103981298A CN 201410248561 A CN201410248561 A CN 201410248561A CN 103981298 A CN103981298 A CN 103981298A
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- waste water
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- soaking
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- filtering
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Abstract
The invention provides a tanning technique for regularly filtering soaking circulating wastewater, which is characterized by circulating and reutilizing wastewater in the soaking process, wherein the wastewater after each soaking process is collected for soaking 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 raw leather processed by the technique is completely suitable for the next tanning process.
Description
Technical field
The present invention relates to leather industry immersion waste water circulation recycling field.
Background technology
In process hides immersion process, waste water circulation technology realizes, but the treating processes 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 running cost is high.
Summary of the invention
Object of the present invention: realize a kind of tanning technology of periodic filtering immersion recycling waste water, substantially solved a difficult problem for immersion process environmental pollution, the rawhide after this operation finishes is applicable to next process hides operation completely.
Technical scheme of the present invention is as follows:
A tanning technology for periodic filtering immersion recycling waste water, is characterized in that in soaking process, carrying out waste water circulation recycling, comprises the steps: to collect the waste water after each soaking process finishes, and is placed on by soaking drum or paddle-tumble; Immersion for lower batch of skin; Waste water stirs before using; Circulation 15-60 time or 15-70 days needs filter useless solid thing.
The useless solid thing of above-mentioned filtration is used the equipment that aperture is 1mm-5mm to carry out, as filter screen; Collected waste water fully recovering, when waste water is not enough, is used fresh water to supplement.
Initial waste water used in the present invention comes from traditional soaking process, and the formation situation of waste water is well known by persons skilled in the art; In waste water, contain immersion agent, NaCl, Na2CO3, grease-removing agent, grease etc., wherein, generally, in waste water, residual grease-removing agent content is generally the 15%-30% of initial content, in waste water, residual immersion agent content is generally the 15%-25% of initial content, and in waste water, residual Na2CO3 content is generally the 30%-50% of initial content; 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 a kind of tanning technology of periodic filtering immersion recycling waste water, and can recycle by iterative cycles, sewage effluent hardly, save complicated filtration, filter residue supervisor, not only alleviated workman's labour intensity, and reduced running cost, and having reduced the generation of useless solid thing simultaneously, the rawhide after this operation finishes is applicable to next process hides operation completely.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic flow sheet of a kind of tanning technology of periodic filtering immersion recycling waste water according to the present invention.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the present invention is further described.
Embodiment
In soaking process, immersion waste water enters immersion wastewater disposal basin, stirs, then by lye pump, be input to soaking drum, the technique of utilizing immersion waste water to soak is: with raw hide weighing scale, and 150% immersion waste water, 0.3% sterilant, turn 30 minutes, 0.6% Soaking, 0.25% grease-removing agent, 0.5% soda ash, turn 30 minutes/stop 0.1% Na 30 minutes
2s, turns 30 minutes/stop 30 minutes, turns and stops in conjunction with carrying out 3 times; Then often turn 10 minutes/stop 50 minutes, spend the night; Immersion 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 specification sheets, as indication scope of the present invention.
Claims (1)
1. a tanning technology for periodic filtering immersion recycling waste water, is characterized in that in soaking process, carrying out waste water circulation recycling, comprises the steps:
Collect the waste water after each soaking process finishes, be placed on by liming rotary drum or paddle-tumble; Immersion for lower batch of skin; Waste water stirs before using, and within circulation 15-60 time or 15-70 days, filters 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, is used fresh water to supplement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248561.3A CN103981298A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering soaking circulating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248561.3A CN103981298A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering soaking circulating wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103981298A true CN103981298A (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410248561.3A Pending CN103981298A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering soaking circulating wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN103981298A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779667A (en) * | 2014-12-22 | 2016-07-20 | 张壮斗 | Leather manufacturing method achieving three-waste discharge reduction |
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 CN201410248561.3A patent/CN103981298A/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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779667A (en) * | 2014-12-22 | 2016-07-20 | 张壮斗 | Leather manufacturing method achieving three-waste discharge reduction |
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| Date | Code | Title | Description |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140813 |