Method for regenerating and recycling wool dyeing wastewater

A technology for dyeing wastewater and wool, which is applied in chemical instruments and methods, textile industry wastewater treatment, water/sewage multi-stage treatment, etc. It can solve the problems of metal ions entering water, etc., so as to save the amount of use, reduce the difficulty of treatment, and improve the technological process. simple effect
CN102249442AActive Publication Date: 2011-11-23BEIJING INST OF CLOTHING TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INST OF CLOTHING TECH
Publication Date
2011-11-23

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Abstract

The invention relates to a method for regenerating and recycling wool dyeing wastewater. The method is mainly used for regeneration and recycling of dyeing wastewater in the dyeing process in the fur dyeing and finishing industry. The front-end treatment technical route of dyeing and finishing wastewater is that: industrial wastewater produced in the dyeing process in the dyeing and finishing production is collected and treated independently and is recycled in the process, a regeneration and recycling system is established, and the using amount of fresh water is saved. Dyeing wastewater is flocculated by using organic flocculant, and flocculate and filtrate are separated by screening and combination of material filtration and separation modes, and the filtrate is adsorbed by using adsorbent to ensure that the dyeing wastewater can meet the regeneration and recycling requirement. In a laboratory and a woolen mill, recycle water dyeing experiment is performed by using acid mordant dyes and lanaset dyes, and the one-time dyeing wastewater recycling rate is over 80 percent; and the color difference level of fresh water for dyes for two kinds of fur and a recycle water dyeing sample are both above level 4.
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Description

technical field

[0001] The invention relates to a method for regeneration and recycling of wool dyeing wastewater, which can be mainly used for regeneration and recycling of dyeing wastewater in the wool dyeing process of the wool dyeing and finishing industry. Background technique

[0002] 80% of the water consumption in the textile industry is dyeing and finishing, and dyeing and finishing wastewater is seriously polluted and difficult to treat. In 2007, the output of printing and dyeing cloth in my country was 49.018 billion meters, and the total amount of wastewater was 2.3 to 3 billion t / a. Developed countries such as (Germany) produce only about 100 tons of fiber dyeing and finishing wastewater per ton (Germany), while in my country it is 250-400 tons. Not only the amount of wastewater is large, but also the pollution is heavy. In 2007, Beijingโ€™s industrial energy consumption and water consumption guidance indicators (the first batch) stipulated that the water consump...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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