Method for treating and recycling fur tanning and dyeing wastewater
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A technology for wastewater treatment and water circulation, which is applied in animal processing wastewater treatment, water/sewage treatment, flotation water/sewage treatment, etc. It can solve the problems of neglected circulation and narrow scope, and save wastewater treatment costs and sewage treatment costs. The effect of saving and reducing the difficulty of wastewater treatment
Inactive Publication Date: 2016-11-23
HEBEI PROVINCIAL ENVIRONMENTAL SCI RES +1
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The above wastewater treatment and recycling methods mainly start with the terminal treatment of wastewater, seek the maximum recycling of wastewater based on the wastewater terminal treatment technology, ignore the circulation of each process of fur production, and have a narrow range of limitations
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[0027] The accompanying drawings show embodiments of the present invention, and the embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but it should not be construed as limiting the present invention. The scope of protection of the present invention is based on the contents of the claims. Any basis The replacement of equivalent technical means made in the specification does not depart from the protection scope of the present invention.
[0028] The overall technical idea of this embodiment is as follows: figure 2 shown, including:
[0029] A. Small cycle
[0030] A1. Add small circulation pools respectively in the immersion, re-dipping, degreasing, pickling, tanning, neutralization, washing, retanning and dyeing processes of fur dyeing. After each process is completed, the process operating liquid is introduced into its own small circulation pool through pipelines for filtration, oil separation and sedimenta...
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Abstract
The invention relates to the treatment of industrial wastewater and in particular to a method for treating and recycling fur tanning and dyeing wastewater. The method comprises process steps of small circulation, middle circulation, large circulation and the like. The technical problem in the prior art that tanning and fur processing wastewater is difficult to treat so that the wastewater is not prone to recycle is overcome. The method has the advantages that the recycling of water in a fur processing process is realized, the usage amount of materials including salt, chemicals and the like is greatly reduced, the wastewater treatment difficulty is reduced, the wastewater treatment cost is saved, water resources are saved and the like.
Description
technical field [0001] The invention relates to the treatment of industrial waste water, in particular to a method for the treatment and recycling of fur dyeing waste water. Background technique [0002] Fur processing is divided into four major sections: preparation, tanning, wet finishing, and dry finishing. Taking the four furs of mink, fox, raccoon, and rex rabbit as examples, the processing process includes skin selection and grouping, soaking, washing and degreasing, Re-dipping, fleshing, second degreasing, pickling, tanning, first washing, neutralization, drying, retanning, dyeing, second washing, drying and finishing. In order to facilitate the operation of hair, the processes of soaking, degreasing, washing, softening with enzymes, pickling, tanning, retanning, bleaching, fading, and dyeing generally need to be carried out in the pool or slot, and the water consumption is very large (the water consumption is the same as that of the skin). quality of 15-20 times); t...
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