CN202072556U - Circulating and recycling system for waste chrome tanning liquid - Google Patents
Circulating and recycling system for waste chrome tanning liquid Download PDFInfo
- Publication number
- CN202072556U CN202072556U CN2011201733020U CN201120173302U CN202072556U CN 202072556 U CN202072556 U CN 202072556U CN 2011201733020 U CN2011201733020 U CN 2011201733020U CN 201120173302 U CN201120173302 U CN 201120173302U CN 202072556 U CN202072556 U CN 202072556U
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- chrome tanning
- tanning liquid
- waste liquor
- waste chrome
- chroming waste
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Abstract
The utility model discloses a circulating and recycling system for waste chrome tanning liquid, which is designed reasonably, has a high recycling ratio and comprises a waste chrome tanning liquid collecting tank, two box type pressure filters, a waste chrome tanning liquid settling pond, a waste chrome tanning liquid storage pond and a reaction kettle; a water outlet of the waste chrome tanning liquid collecting tank is connected to water inlets of the box type filtering boxes by a water pump; water outlets of the box type filtering boxes are connected to the waste chrome tanning liquid settling pond; an air compressor is arranged on the waste chrome tanning liquid settling pond; a water outlet of the waste chrome tanning liquid settling pond is connected to another box type filtering device by the water pump; and the two box type pressure filters are connected to the reaction kettle; and a water outlet of the reflection kettle is connected to the waste chrome tanning liquid storage pond. The circulating and recycling system is used for circulating and recycling the waste chrome tanning liquid, greatly saves the production cost of enterprises and has a wide market prospect.
Description
Technical field
The utility model belongs to the leather production technical field, particularly relates to a kind of circulation and regeneration system of chroming waste liquor.
Background technology
Chrome tanning is one of operation of most critical in the leather manufacturing processed, gives leather good performance because of it, is the mainstream technology of leather tanning always.Through the operation of tanning, rawhide protein is crosslinked and sex change takes place, and makes the variation of rawhide structure generation matter, obtains moisture-proof heat, good stability, good moldability, soft and full leather, becomes the leather that has use value.Chrome tanning has the history in more than 100 year, and its superior tanning performance becomes requisite production process in the modern tanning production always in occupation of dominant position, and chrome tanning agent also is one of leather chemical industry material of consumption maximum simultaneously.Because in tannery, chromium is not absorbed fully by collegen filament, and the utilization ratio of chrome tanning has only about 70%, and all the other chrome tanning agents of about 30% all are not utilized and enter in the waste water and directly drain.These waste water that contain chrome tanning agent are more unmanageable a kind of waste water in the tanning industry, wherein chromium sesquioxide content is up to 1～5g/L, if this high-concentration chromium-containing wastewater is directly emitted, and polluted-water not only, harm humans health and ecotope also are the great wastings of resources simultaneously.
Summary of the invention
Therefore, at the problem of above-mentioned existence, the utility model provides a kind of circulation and regeneration system of reasonable in design, chroming waste liquor that recovery utilization rate is high.
For achieving the above object, the utility model is by the following technical solutions: the circulation of chroming waste liquor and regeneration system, comprise the chroming waste liquor collecting tank, two chamber filter presses, the chroming waste liquor settling tank, chrome tanning liquid storage pool and reactor, the water outlet of described chroming waste liquor collecting tank is connected to the water inlet of chamber filter press by water pump, the water outlet of chamber filter press is connected to the chroming waste liquor settling tank, the chroming waste liquor settling tank is provided with an air compressor machine, the water outlet of chroming waste liquor settling tank is connected to another chamber filter press by water pump, this chamber filter press is connected to reactor, and the water outlet of reactor is connected to chrome tanning liquid storage pool.
Preferably, also be provided with a water pump on the described chroming waste liquor settling tank.
By adopting technique scheme, the beneficial effects of the utility model are as follows: by circulation and the regeneration system that uses chroming waste liquor of the present utility model, the reclamation rate of chromic salts can reach more than 99% in the chroming waste liquor, in the deduction treating processes some are spilt, and the cyclic utilization rate of chroming waste liquor can reach more than 95%.Chromium content is lower than 10mg/kg in the waste liquid after the processing, and can reach emission standard after other waste water mix, and effectively prevents environmental pollution; The utility model is handled 300 tons of chroming waste liquors can reclaim the chrome tanning agent that is equivalent to 1.5 tons of standard chromium powders, can save the chromium powder cost more than 1.2 ten thousand yuan every day, and the deduction processing cost is about 2000 yuan/day, and the comprehensive benefit of project can reach more than 10,000 yuan/day.And every year can water saving more than 60,000 tons, the conserve water resource has also been saved the production cost of enterprise greatly.The utility model is reasonable in design, recovery utilization rate is high, is applied to the circulation and the regeneration of chroming waste liquor, has vast market prospect.
Description of drawings
Fig. 1 is the system chart of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Embodiment: please refer to Fig. 1, the utility model embodiment discloses a kind of circulation and regeneration system of chroming waste liquor, comprise chroming waste liquor collecting tank 1, two chamber filter presses, chroming waste liquor settling tank 4, chrome tanning liquid storage pool 8 and reactor 7, the water outlet of described chroming waste liquor collecting tank 1 is connected to the water inlet of chamber filter press 3 by water pump 2, the water outlet of this chamber filter press 3 is connected to chroming waste liquor settling tank 4, chroming waste liquor settling tank 4 is provided with an air compressor machine 41, the water outlet of chroming waste liquor settling tank 4 is connected to chamber filter press 6 by water pump 5, this chamber filter press 6 is connected to reactor 7, and the water outlet of reactor 7 is connected to chrome tanning liquid storage pool 8.
Preferably, also be provided with a water pump on the described chroming waste liquor settling tank, be used to extract the supernatant liquid of removing the chroming waste liquor settling tank.
System works principle of the present utility model: collect chroming waste liquor by pipe special, be stored in the chroming waste liquor collecting tank 1, chroming waste liquor extracted to chamber filter press 3 remove scurf removing, waste liquid after the filtration enters in the chroming waste liquor settling tank 4, chroming waste liquor dissolves good sheet alkali and soda ash by adding under the air compressor machine 41 compressed-air actuated stirrings in chroming waste liquor settling tank 4, chroming waste liquor pH value is adjusted to about 8, about logical again steam heating to 40 ℃, chromic salts is fully precipitated, standing over night, inferior civil water pump 42 is removed the supernatant liquid of chroming waste liquor settling tank 4, with water pump 5 chroming waste liquor of post precipitation is extracted in the chamber filter press 6 again and filters, further remove the moisture in the mud that dechromises, obtain the chromium cake; The chromium cake is added in the reactor 7, after the adding sulfuric acid dissolution is even, regulate about pH value to 2.5, change storage pool 8 again over to and carry out ageing, analyze the chromium content of chrome tanning liquid in the chrome tanning liquid storage pool 8, be back to chrome tanning process.
Circulate after about 5 times, need regenerate, remove and chromium bonded organic impurities, improve the tanning performance the chrome tanning agent that reclaims.The chromium cake is added in the reactor 7, add sulfuric acid dissolution evenly after, add oxygenant, with steam heating to 75 ℃ and stirring reaction 2 hours, after treating no longer to produce bubble, use sodium thiosulfate that the dichromate that produces is reduced fully.Regulate about pH value to 2.5, change chrome tanning liquid storage pool 8 again over to and carry out ageing, analyze the chromium content of chrome tanning liquid in the chrome tanning liquid storage pool 8, be back to chrome tanning process.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, the technician in relevant field is not breaking away under the spirit and scope of the present utility model, and various conversion of making and variation all belong to category of the present utility model, should be limited by each claim.
Claims (2)
1. the circulation of chroming waste liquor and regeneration system, it is characterized in that: comprise chroming waste liquor collecting tank (1), two chamber filter presses, chroming waste liquor settling tank (4), chrome tanning liquid storage pool (8) and reactor (7), the water outlet of described chroming waste liquor collecting tank (1) is connected to the water inlet of chamber filter press (3) by water pump (2), the water outlet of chamber filter press (3) is connected to chroming waste liquor settling tank (4), chroming waste liquor settling tank (4) is provided with an air compressor machine (41), the water outlet of chroming waste liquor settling tank (4) is connected to chamber filter press (6) by water pump (5), this chamber filter press (6) is connected to reactor (7), and the water outlet of reactor (7) is connected to chrome tanning liquid storage pool (8).
2. the circulation of chroming waste liquor according to claim 1 and regeneration system is characterized in that: also be provided with a water pump (42) on the described chroming waste liquor settling tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201733020U CN202072556U (en) | 2011-05-26 | 2011-05-26 | Circulating and recycling system for waste chrome tanning liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201733020U CN202072556U (en) | 2011-05-26 | 2011-05-26 | Circulating and recycling system for waste chrome tanning liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202072556U true CN202072556U (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201733020U Expired - Lifetime CN202072556U (en) | 2011-05-26 | 2011-05-26 | Circulating and recycling system for waste chrome tanning liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202072556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152599A (en) * | 2014-08-01 | 2014-11-19 | 河南博奥皮业有限公司 | Recycling method of chrome tanning waste liquor and matching device thereof |
-
2011
- 2011-05-26 CN CN2011201733020U patent/CN202072556U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152599A (en) * | 2014-08-01 | 2014-11-19 | 河南博奥皮业有限公司 | Recycling method of chrome tanning waste liquor and matching device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |