Adsorbent and application thereof to wool dyeing wastewater recycling technology
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A technology for dyeing wastewater and adsorbents, which is used in adsorption water/sewage treatment, textile industry wastewater treatment, water pollutants, etc., to achieve the effects of easy treatment, cost reduction, and low operating cost
Inactive Publication Date: 2011-02-09
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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The present invention uses industrial waste cinders and fly ash as adsorbents, and through the adsorption experiments on acids and metal ions, effectively solves the problem of removing acids and metal ions in wool dyeing wastewater recycling technology, so that wool dyeing After the waste water is treated by regeneration and recycling technology, it can achieve the purpose of reuse in the dyeing process
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Embodiment 1
[0021] Embodiment 1: adopt the mode of operation in the summary of the invention (2), adsorbent A and 35 mesh activated carbons, adsorbent quality 1g, adsorbate initial concentration 0.2mol / L, under the condition of temperature 30 ℃, time 30 minutes, to acetic acid, Formic acid, sulfuric acid, oxalic acid, and citric acid were adsorbed, and the results are shown in Table 1.
[0022] Table 1 Adsorption of acid by adsorbent A and 35 mesh activated carbon
[0023]
Embodiment 2
[0024] Embodiment 2: adopt the mode of operation in the content of the invention (2), adsorbent B and 120 mesh activated carbon, adsorbent quality 1g, adsorbate initial concentration 0.2mol / L, under the condition of temperature 30 ℃, time 30 minutes, to acetic acid, Formic acid, sulfuric acid, oxalic acid, and citric acid were adsorbed, and the results are shown in Table 2.
[0025] Table 2 Adsorption of acid by adsorbent B and 120 mesh activated carbon
[0026]
Embodiment 3
[0027] Embodiment 3: Adopt the mode of operation in the summary of the invention (2), adsorbent A, adsorbent mass 50g, initial concentration of adsorbate 0.4mol / L, under the condition of temperature 30 ℃, time 30 minutes, adsorbent A to acetic acid The adsorption capacity is 143 mg / g, the adsorption capacity for formic acid is 125 mg / g, the adsorption capacity for sulfuric acid is 154 mg / g, the adsorption capacity for oxalic acid is 108 mg / g, and the adsorption capacity for citric acid is 200 mg / g.
[0028] The data of embodiment 1-2 shows: adsorbent A and B are to the adsorption capacity of above-mentioned several acids greater than 50%-400% of the adsorption capacity of activated carbon to corresponding acid; High-quality adsorbents readily available at low cost.
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Abstract
The invention relates to an adsorbent and application thereof to wool dyeing wastewater recycling technology, and aims to provide the adsorbent for the wool dyeing wastewater recycling technology. The adsorbent has high acid and metal ion absorption capacity, low cost and low running cost, and is simple to operate and easy to treat after being used. Experiments on the absorption of acid and metal ions by adopting industrial waste cinders and coal ash as the adsorbent effectively solve the problem of removal of the acid and metal ions in the wool dyeing wastewater recycling technology. The adsorbent can absorb acetic acids, formic acids, sulfuric acids, oxalic acids and citric acids in an amount which is 50 to 400 percent of that of corresponding acids absorbed by activated carbon, is at the same level of absorption of chromium ions, iron ions and copper ions as the activated carbon, differentiates the color of a dyed material from that of the dyed material dyed by fresh water by more than 4 levels and simultaneously saves the using amount of the fresh water, so that the aim of recycling wool dyeing wastewater in dyeing processes after the wool dyeing wastewater is treated by the recycling technology can be fulfilled.
Description
technical field [0001] The invention relates to an adsorbent, and the invention also relates to the application of the adsorbent in the regeneration and recycling technology of wool dyeing wastewater. Background technique [0002] Wool dyeing needs to be carried out under acidic conditions. Sulfuric acid, formic acid, acetic acid, etc. are commonly used. For acidic metal complex dyes, free heavy metal ions such as chromium ions will be released from the dye and enter the aqueous solution during the wool dyeing process; For acid mordant dyes, dichromate is usually added as a mordant in wool dyeing, so a large amount of chromium ions enter the aqueous solution. [0003] Wool dyeing waste water recycling technology means that the waste water produced by the wool dyeing unit is returned to the original wool dyeing unit for reuse after being treated by the above-mentioned technology. The advantages of this technology are 1. Realize the recycling of waste water and reduce the con...
Claims
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Application Information
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