Treatment method for dyeing wastewater of natural dye

A technology of natural dyes and dyeing wastewater, which is applied in the field of textile printing and dyeing, can solve the problems of high cost, low recycling rate, and increase the investment of high-level talents, and achieve the effect of low cost and short processing time

Active Publication Date: 2016-10-12
湖州新嘉怡丝织印花有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are many treatment processes for printing and dyeing wastewater. The most representative one is the traditional method of direct chemical treatment. This method has a low recycling rate, and the discharged treated wastewater still contains a large amount of harmful substances, and the co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for treating natural dyestuff wastewater, including the following steps:

[0041] A. Introduce natural dyestuff dyeing wastewater into a stirred tank, add biomass fiber to the stirred tank, stir at a high speed of 5500rpm for 6 minutes, and filter to obtain sediment and waste water;

[0042] B. Introduce the waste water in the stirred tank into the filter tank, add flocculant to the waste water, filter after the sewage is flocculated, filter out the suspended matter in it, and obtain the sediment, and the remaining colored fine suspended matter and dissolved matter;

[0043] C. The treated water in the filter tank is passed into the activated carbon adsorption system;

[0044] D. Reuse the water treated by the activated carbon adsorption system in the printing and dyeing process;

[0045] The pulverized product of natural fiber leftovers is a pulverized product of bamboo fiber leftovers;

[0046] The flocculant is aluminum sulfate;

[0047] The method of dyeing with natura...

Embodiment 2

[0062] A method for treating natural dyestuff wastewater, including the following steps:

[0063] A. Introduce natural dyestuff dyeing wastewater into a stirred tank, add biomass fiber to the stirred tank, stir at high speed at 5000 rpm for 5 minutes, and filter to obtain sediment and waste water;

[0064] B. Introduce the waste water in the stirred tank into the filter tank, add flocculant to the waste water, filter after the sewage is flocculated, filter out the suspended matter in it, and obtain the sediment, and the remaining colored fine suspended matter and dissolved matter;

[0065] C. The treated water in the filter tank is passed into the activated carbon adsorption system;

[0066] D. Reuse the water treated by the activated carbon adsorption system in the printing and dyeing process;

[0067] The pulverized material of natural fiber leftovers is a pulverized material of bamboo fiber leftovers;

[0068] The flocculant is aluminum sulfate;

[0069] The method of dyeing with natur...

Embodiment 3

[0084] A method for treating natural dyestuff wastewater, including the following steps:

[0085] A. Introduce natural dyestuff dyeing wastewater into a stirred tank, add biomass fiber to the stirred tank, stir at 6000 rpm for 8 minutes, and filter to obtain sediment and waste water;

[0086] B. Introduce the waste water in the stirred tank into the filter tank, add flocculant to the waste water, filter after the sewage is flocculated, filter out the suspended matter in it, and obtain the sediment, and the remaining colored fine suspended matter and dissolved matter;

[0087] C. The treated water in the filter tank is passed into the activated carbon adsorption system;

[0088] D. Reuse the water treated by the activated carbon adsorption system in the printing and dyeing process;

[0089] The pulverized material of natural fiber leftovers is a pulverized material of bamboo fiber leftovers;

[0090] The flocculant is aluminum sulfate;

[0091] The method of dyeing with natural dyes is:

[...

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PUM

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Abstract

The invention provides a treatment method for dyeing wastewater of natural dye. According to the method, the wastewater does not need to be decolored, all that is required is to add a little natural fiber fabric waste and a few of flocculating agents, and the wastewater can be treated through activated carbon. The treatment method can be repeatedly used for a printing and dyeing process, a large quantity of wastewater treating agents are saved, the treatment time is short in the whole process, and the cost is low.

Description

Technical field [0001] The invention relates to the technical field of textile printing and dyeing, in particular to a method for treating natural dyestuff wastewater. Background technique [0002] With the increasing awareness of human environmental protection and increasing attention to their own health, the harm caused by some synthetic dyes to human health and the ecological environment has become increasingly noticeable. The existing research results have shown that there are 23 carcinogenic aromatic amines, more than 100 synthetic dyes may produce carcinogens, and more than 20 synthetic dyes are allergic to the skin. Therefore, synthetic dyes and their dyed textiles make consumers doubtful. Not only that, with the continuous consumption of petroleum resources on the earth, the problem of raw materials for synthetic dyes has become increasingly tense. [0003] Natural dyes are extracted from plant roots, leaves, bark, tree trunks, fruit shells, flowers or animal secretions, ...

Claims

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Application Information

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IPC IPC(8): C02F9/04D06P1/34D06P1/36D06P3/64C02F103/30
CPCC02F1/28C02F1/283C02F1/52C02F1/5245C02F9/00C02F2103/30D06P1/34D06P1/36D06P3/005D06P3/64
Inventor 何时荣
Owner 湖州新嘉怡丝织印花有限公司
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