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Method of using double acid treatment to prepare bio-adsorbent to treat printing and dying wastewater

A biological adsorbent, printing and dyeing wastewater technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of low effect and high price, and achieve the effect of low price and good adsorption effect

Pending Publication Date: 2019-02-01
YUNCHENG UNIVERISTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the technical problems of high price and low effect in the existing treatment of printing and dyeing wastewater, and to provide a method for preparing a biosorbent for treating printing and dyeing wastewater by using two acid treatments

Method used

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  • Method of using double acid treatment to prepare bio-adsorbent to treat printing and dying wastewater
  • Method of using double acid treatment to prepare bio-adsorbent to treat printing and dying wastewater
  • Method of using double acid treatment to prepare bio-adsorbent to treat printing and dying wastewater

Examples

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Embodiment 1

[0024] A method of preparing a biosorbent for treating printing and dyeing wastewater by using two acid treatments in this embodiment, the specific steps are as follows:

[0025] 1) Alkali treatment: put the collected Populus tomentosa leaves into NaOH solution with pH=12, soak for 40 minutes at room temperature, drain, and rinse with distilled water until neutral;

[0026] 2) The first acid treatment: add a hydrochloric acid solution with a pH of 2 to the leaves of Populus tomentosa, soak for 40 minutes at room temperature, drain, and rinse with distilled water until neutral;

[0027] 3) The second acid treatment: add the Populus tomentosa leaves treated in step 2) into 0.1mol / L hydrochloric acid solution, soak for 20min at room temperature, and then rinse with distilled water until neutral;

[0028] 4) Soak in hydrogen peroxide: fully rinse with distilled water until neutral, then soak in hydrogen peroxide for 24 hours;

[0029] 5) Ethanol treatment: add Populus tomentosa l...

Embodiment 2

[0072] A method of preparing a biosorbent for treating printing and dyeing wastewater by using two acid treatments in this embodiment, the specific steps are as follows:

[0073] 1) Alkali treatment: put the collected Populus tomentosa leaves into NaOH solution with pH=10, soak for 60 minutes at room temperature, drain, and rinse with distilled water until neutral;

[0074] 2) The first acid treatment: add a hydrochloric acid solution with a pH of 3 to the leaves of Populus tomentosa, soak for 60 minutes at room temperature, drain, and rinse with distilled water until neutral;

[0075] 3) The second acid treatment: add the Populus tomentosa leaves treated in step 2) into 0.05mol / L hydrochloric acid solution, soak for 20min at normal temperature, and then rinse with distilled water until neutral;

[0076] 4) Soak in hydrogen peroxide: fully rinse with distilled water until neutral, then soak in hydrogen peroxide for 18 hours;

[0077] 5) Ethanol treatment: add Populus tomentos...

Embodiment 3

[0081] A method of preparing a biosorbent for treating printing and dyeing wastewater by using two acid treatments in this embodiment, the specific steps are as follows:

[0082] 1) Alkali treatment: put the collected Populus tomentosa leaves into NaOH solution with pH=13, soak for 20 minutes at room temperature, drain, and rinse with distilled water until neutral;

[0083] 2) The first acid treatment: add a hydrochloric acid solution with a pH of 1 to the leaves of Populus tomentosa, soak for 20 minutes at room temperature, drain, and rinse with distilled water until neutral;

[0084] 3) The second acid treatment: add the Populus tomentosa leaves treated in step 2) into 0.35 mol / L hydrochloric acid solution, soak for 20 minutes at room temperature, and then rinse with distilled water until neutral;

[0085] 4) Soak in hydrogen peroxide: fully rinse with distilled water until neutral, then soak in hydrogen peroxide for 21 hours;

[0086] 5) Ethanol treatment: add Populus tome...

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Abstract

The invention relates to a method of using double acid treatment to prepare a bio-adsorbent to treat printing and dying wastewater, belongs to a production method of a primitive green bio-adsorbent, and is intended to solve the technical problem that exiting treatment of printing and dying wastewater has high cost and poor effect. According to the technical scheme, the method herein comprises thespecific steps of 1) treating with a base; 2) performing first acid treatment; 3) performing second acid treatment, to be specific, soaking leaf of Populus tomentosa treated in step 2) in 0.05-0.35 mol / L hydrochloric acid solution at normal temperature for 20 min, and flushing with distilled water to neutrality; 4) soaking with hydrogen peroxide; 5) treating with ethanol; 6) drying to constant weight; 7) crushing. The method herein has the advantages that, for instance, waste resources are reused, adsorbing effect is good, and the price is low.

Description

technical field [0001] The invention relates to a method for preparing a biosorbent for treating printing and dyeing wastewater by using two acid treatments, which belongs to an environment-friendly production method of original ecological green biosorbent. Background technique [0002] With the rapid development of the printing and dyeing industry, a large amount of printing and dyeing wastewater is discharged, which not only pollutes the environment, but also causes harm to people's lives. Therefore, it is particularly important to treat printing and dyeing wastewater. [0003] As a traditional landscaping tree species in the north, Poplar tomentosa has the characteristics of strong adaptability, strong resistance, and resistance to diseases and insect pests. It is widely used as a backbone street tree species in many cities. However, in the late autumn every year, falling leaves are colorful, and the workload of the sanitation and greening maintenance departments is soari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
CPCB01J20/24B01J2220/4825C02F1/286
Inventor 李新陈莉
Owner YUNCHENG UNIVERISTY
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