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Method for treating printing and dyeing wastewater by adopting abandoned straw

A technology for waste straw and printing and dyeing wastewater is applied in the treatment of printing and dyeing wastewater. The use of waste straw to treat printing and dyeing wastewater can solve the problems of long treatment period, low treatment efficiency and high treatment cost, and reduce the amount of waste dyes and the content of chemical substances. Effect

Inactive Publication Date: 2014-07-02
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for treating printing and dyeing wastewater by using waste straw, which solves the problems of long treatment period, low treatment efficiency and high treatment cost in existing wastewater treatment methods

Method used

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  • Method for treating printing and dyeing wastewater by adopting abandoned straw
  • Method for treating printing and dyeing wastewater by adopting abandoned straw
  • Method for treating printing and dyeing wastewater by adopting abandoned straw

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Experimental program
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Effect test

Embodiment 1

[0034] Step 1: Refer to prescription 1 to take 10g of waste straw, calculate the water consumption as 300ml according to the bath ratio of 30:1, and the amount of polysaccharide compound as 0.03g (the amount of polysaccharide compound is calculated as 0.1% of the water consumption), and then mix the polysaccharide compound with the above amount Prepare a solution with water, adjust the pH value to 8-8.5 (use NaHCO 3 、Na 2 CO 3 Adjustment), and then put the waste straw into the polysaccharide compound solution, control the temperature at 25-35° C., and the time for 30 minutes to obtain the modified waste straw.

[0035] Step 2: Take 5g of modified straw according to prescription 2, use 1% concentration of printing and dyeing wastewater, calculate the amount of printing and dyeing wastewater as 150ml according to the bath ratio of 30:1, and adjust the pH value to 8 (use NaHCO 3 、Na 2 CO 3 adjustment), put the waste straw into the printing and dyeing wastewater, control the t...

Embodiment 2

[0045] Step 1: Refer to prescription 1 to take 10g of waste straw, calculate the water consumption as 300ml according to the bath ratio of 30:1, and the amount of polysaccharide compound as 0.06g (the amount of polysaccharide compound is calculated as 0.2% of the water consumption), and then mix the polysaccharide compound and Prepare a solution with water, and adjust the pH value to 8.0-8.5 (use NaHCO 3 、Na 2 CO 3 Adjustment), and then put the waste straw into the polysaccharide compound solution, control the temperature at 25-35° C., and the time for 30 minutes to obtain the modified waste straw.

[0046] Step 2: Take 5g of modified straw according to prescription 2, use 3% concentration of printing and dyeing wastewater, calculate the amount of printing and dyeing wastewater as 150ml according to the bath ratio of 30:1, and adjust the pH value to 9 (use NaHCO3 、Na 2 CO 3 adjustment), put the waste straw into the printing and dyeing wastewater, control the temperature at ...

Embodiment 3

[0056] Step 1: Refer to prescription 1 to take 10g of waste straw, calculate the water consumption as 300ml according to the bath ratio of 30:1, and the amount of polysaccharide compound as 0.075g (the amount of polysaccharide compound is calculated as 0.25% of the water consumption), and then mix the polysaccharide compound and Prepare a solution with water, adjust the pH value to 8-8.5 (use NaHCO 3 、Na 2 CO 3 Adjustment), and then put the waste straw into the polysaccharide compound solution, control the temperature at 25-35° C., and the time for 30 minutes to obtain the modified waste straw.

[0057] Step 2: Take 5g of modified straw according to prescription 2, use 5% concentration of printing and dyeing wastewater, calculate the amount of printing and dyeing wastewater as 150ml according to the bath ratio of 30:1, and adjust the pH value to 10 (use NaHCO 3 、Na 2 CO 3 Adjustment), put the waste straw into the printing and dyeing wastewater, control the temperature at 6...

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Abstract

The invention discloses a method for treating printing and dyeing wastewater by adopting abandoned straw. Firstly a polysaccharide compound is adopted for treating the abandoned straw, and the abandoned straw is chemically modified; then the modified abandoned straw is adopted for adsorbing the printing and dyeing wastewater. According to the method for treating the printing and dyeing wastewater by adopting the abandoned straw, a new printing and dyeing wastewater treatment technology is designed by utilizing the abandoned straw, so that dye molecules in wastewater are quickly attached to the abandoned straw under the adsorption action, and quantity of abandoned dye in dyeing wastewater and content of chemical substances in the dyeing wastewater are obviously reduced. By adopting the method for treating the printing and dyeing wastewater, wastewater treatment cost is greatly reduced and for printing and dyeing mills.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and relates to a treatment technology for printing and dyeing wastewater, in particular to a method for treating printing and dyeing wastewater by using waste straw. Background technique [0002] There are a large number of undyed dyes in printing and dyeing wastewater, which are usually treated by physical adsorption, chemical redox, and biological methods. The physical treatment method is mainly to remove particulate matter such as dye colloids in wastewater, including methods such as filtration, precipitation, flotation, fractionation and flocculation. Among them, the precipitation method is the most commonly used wastewater treatment method. Its shortcoming is that the treatment time is long. For printing and dyeing enterprises with continuous production, the treatment effect of this method is poor; the chemical treatment method is mainly used to remove heavy metal ions in...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/24C02F103/30
Inventor 谭艳君刘昌南邢建伟吴钦李超
Owner XI'AN POLYTECHNIC UNIVERSITY
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