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Method for treating colored dye wastewater generated by printing and dyeing technology

A technology for wastewater treatment and colored dyes, applied in water/sewage treatment, illuminated water/sewage treatment, neutralized water/sewage treatment, etc., to achieve the effects of improving stability, improving treatment effect, and uniform particle size

Inactive Publication Date: 2020-02-11
柏威达(南京)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent document CN108751329A discloses a method for treating methyl violet dye wastewater, which relates to the technical field of dye wastewater treatment; specifically, coke is heated in a water bath at 60-80°C for 60-80min, dried and ground to 100-140 mesh; adjusted The pH of the methyl violet dye wastewater is 5.5-6.5; add an adsorbent to the pH-adjusted methyl violet dye wastewater, shake for 30-40 minutes, and then let it stand for 70-100 minutes; the concentration of the methyl violet dye wastewater is 2-4mg / L; This document gives the removal method of methyl violet dye, the use of adsorbent is relatively conventional, and the treatment method is relatively existing, so further improvement is needed

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  • Method for treating colored dye wastewater generated by printing and dyeing technology
  • Method for treating colored dye wastewater generated by printing and dyeing technology

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Experimental program
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Effect test

Embodiment 1

[0028] The colored dye wastewater treatment method that a kind of printing and dyeing technique of the present embodiment produces comprises the following steps:

[0029] Step 1, preparation of adsorbent: Soak the coke in the activation solution first, the soaking temperature is 85°C, soak for 2 hours, after soaking, air-dry until the surface moisture content is 3%, and then put it into the tube furnace for heat treatment for 10 minutes, heat treatment The temperature is 400°C, after the heat treatment is completed, sputter etching is carried out to form etch pits, and then composite additives are added into the etch pits, followed by hot-press sintering treatment, after hot-press sintering is completed, the adsorbent is obtained by cooling;

[0030] Step 2, the modification of the adsorbent: put the adsorbent in the cyclodextrin solution, ultrasonically disperse for 20 minutes, the ultrasonic power is 100W, and at the same time use ultraviolet radiation for 5 minutes, the tota...

Embodiment 2

[0040] The colored dye wastewater treatment method that a kind of printing and dyeing technique of the present embodiment produces comprises the following steps:

[0041] Step 1, preparation of the adsorbent: soak the coke in the activation solution first, the soaking temperature is 95°C, soak for 5 hours, after soaking, air-dry until the surface moisture content is 6%, and then put it into the tube furnace for heat treatment for 20 minutes, heat treatment The temperature is 800°C, after the heat treatment is completed, sputter etching is carried out to form etch pits, and then composite additives are added into the etch pits, followed by hot-press sintering treatment, after hot-press sintering is completed, the adsorbent is obtained by cooling;

[0042] Step 2, the modification of the adsorbent: put the adsorbent in the cyclodextrin solution, ultrasonically disperse for 30 minutes, the ultrasonic power is 200W, and at the same time use ultraviolet radiation for 10 minutes, the...

Embodiment 3

[0052] The colored dye wastewater treatment method that a kind of printing and dyeing technique of the present embodiment produces comprises the following steps:

[0053] Step 1, preparation of the adsorbent: soak the coke in the activation solution first, the soaking temperature is 90°C, soak for 3.5 hours, after soaking, air-dry until the surface moisture content is 4.5%, and then put it into the tube furnace for heat treatment for 15 minutes, The heat treatment temperature is 600°C. After the heat treatment is completed, sputter etching is performed to form etch pits, and then compound additives are added into the etch pits, and then hot-pressed sintering treatment is completed, and the adsorbent is obtained by cooling;

[0054] Step 2, the modification of the adsorbent: put the adsorbent in the cyclodextrin solution, ultrasonically disperse for 25 minutes, the ultrasonic power is 150W, and at the same time, use ultraviolet radiation for 7.5 minutes, the total irradiation do...

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Abstract

The invention discloses a method for treating colored dye wastewater generated by a printing and dyeing technology. The method comprises the following steps: 1, preparing an adsorbent: soaking coke inan activating solution at 85-95 DEG C for 2-5 h, air-drying the coke until the surface moisture content is 3-6% after the soaking is finished, then feeding the coke into a tubular furnace, carrying out heat treatment at 400-800 DEG C for 10-20 min, and carrying out sputtering etching treatment after heat treatment is finished in order to form etching pits. The coke has very strong adsorption capacity, the activation solution is adopted for treatment to improve the activity of the coke and form micro-pores in the surface, the etching pits can be easily formed in subsequent sputtering etching treatment, the pits can be easily filled with a composite assistant, and the heat treatment activation in the tubular furnace makes the pore diameter of micro-pores uniform and the particle size increased, so the composite assistant can be easily coated under the filling of the composite assistant.

Description

technical field [0001] The invention relates to the technical field of colored dye wastewater treatment, in particular to a method for treating colored dye wastewater produced by printing and dyeing technology. Background technique [0002] With the development of social economy, the development of printing and dyeing technology is getting faster and faster, and the problem of water pollution caused by the acceleration of industrialization has attracted more and more attention. A large amount of colored dyes will be needed in printing and dyeing technology, and dyes refer to A class of organic compounds that can make other substances obtain bright and firm colors. Since the pigments used today are all artificially synthesized, they are also called synthetic dyes. Dyes and pigments are generally self-colored compounds that can make other substances obtain bright and firm colors in molecular or dispersed state. Color fastness is one of the important quality indicators to meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08B01J20/20B01J20/30C02F101/30
CPCB01J20/20C02F1/283C02F1/30C02F1/66C02F9/00C02F2101/308
Inventor 朱娟
Owner 柏威达(南京)环境科技有限公司