CN103981297A - Tanning technique for regularly filtering neutralizing circulating wastewater - Google Patents
Tanning technique for regularly filtering neutralizing circulating wastewater Download PDFInfo
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- CN103981297A CN103981297A CN201410248439.6A CN201410248439A CN103981297A CN 103981297 A CN103981297 A CN 103981297A CN 201410248439 A CN201410248439 A CN 201410248439A CN 103981297 A CN103981297 A CN 103981297A
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- waste water
- filtering
- neutralizing
- wastewater
- circulating
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Abstract
The invention provides a tanning technique for regularly filtering neutralizing circulating wastewater, which is characterized by circulating and reutilizing wastewater in the neutralizing process, wherein the wastewater after each neutralizing process is collected for neutralizing 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 blue leather satisfy the requirements.
Description
Technical field
The present invention relates in leather industry and waste water circulation recycling field.
Background technology
In process hides N-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 in a kind of periodic filtering and the tanning technology of recycling waste water, substantially solved a difficult problem for N-process environmental pollution, and the blue skin property indices of producing thus all reaches requirement.
Technical scheme of the present invention is as follows:
In periodic filtering and the tanning technology of recycling waste water, it is characterized in that in and in operation, carry out waste water circulation recycling, comprise the steps:
Waste water after finishing with operation in collecting at every turn, in being placed on and by rotary drum; For the neutralization of 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 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 come from traditional in and operation, the formation situation of waste water is well known by persons skilled in the art; In and waste water in contain neutral salt 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 in a kind of periodic filtering and the tanning technology of recycling 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 running cost, and having reduced the generation of useless solid thing simultaneously, the blue skin property indices of production all reaches requirement.
Brief description of the drawings
Accompanying drawing 1 is according to the present invention in a kind of periodic filtering and the schematic flow sheet of the tanning technology of recycling waste water.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the present invention is further described.
Embodiment
In and in operation, in and waste water enter in and wastewater disposal basin, stir, in being then input to by acid and alkali-proof pump and rotary drum, utilize the technique that waste water neutralizes to be: with shaving leather weighing scale, in 200% and waste water, temperature is adjusted to 32 DEG C, in 1.5% and tannin, 1.5% sodium-acetate, turns 20 minutes; 0.5% sodium bicarbonate, turns 60 minutes, requires: pH value 4.5-5.5; Neutralization 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 instruction scope of the present invention.
Claims (1)
1. in periodic filtering and the tanning technology of recycling waste water, it is characterized in that in and in operation, carry out waste water circulation recycling, comprise the steps:
Waste water after finishing with operation in collecting at every turn, in being placed on and by rotary drum; For the neutralization of lower batch of skin; Waste water stirs before using; Within circulation 15-60 time or 15-70 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 |
|---|---|---|---|
| CN201410248439.6A CN103981297A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering neutralizing circulating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248439.6A CN103981297A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering neutralizing circulating wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103981297A true CN103981297A (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410248439.6A Pending CN103981297A (en) | 2014-06-06 | 2014-06-06 | Tanning technique for regularly filtering neutralizing circulating wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN103981297A (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 CN201410248439.6A patent/CN103981297A/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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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140813 |