Method for treating dye wastewater through cooperation of adsorption and magnetization separation technologies

A dye wastewater and separation technology technology, which is applied in the field of dye wastewater treatment by adsorption synergistic magnetization separation technology, can solve problems affecting human health and normal life, environmental loss, biological life activities, etc., and achieve stability and recycling performance. , Prevent secondary pollution, good adsorption and removal effect

Inactive Publication Date: 2019-10-11
LANZHOU JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It will not only affect the life activities of organisms, but also seriously affect human health and normal life, and cause irreparable losses to the environment.

Method used

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  • Method for treating dye wastewater through cooperation of adsorption and magnetization separation technologies
  • Method for treating dye wastewater through cooperation of adsorption and magnetization separation technologies
  • Method for treating dye wastewater through cooperation of adsorption and magnetization separation technologies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Preparation of biochar

[0034] Preparation of raw biochar: Soak cotton stalks in water to remove surface impurities, dry and crush them, pass the debris through a 40-mesh sieve, put them into a crucible, and place them in a muffle furnace for high-temperature pyrolysis at a temperature of 500 °C , after pyrolysis for 6 h, take it out, cool to room temperature, take out the carbonized product and grind it into powder, and pass through an 80-mesh sieve. Then pickle repeatedly with hydrochloric acid to remove ash, and then rinse repeatedly with deionized water until the carbonized product is neutral, place it in an oven at 80°C for drying, take it out after 12 hours, cool it to room temperature, and put it into a brown bottle for use , labeled CSBC.

[0035] Preparation of magnetized modified biochar: Weigh 5.18 g FeSO 4 ·7H 2 O and 4.16 g FeCl 3 ·6H 2 O was dissolved in 50 mL of ultrapure water, and after stirring evenly, 5 g of the prepared CSBC was added, and afte...

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PUM

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Abstract

The invention discloses a method for treating dye wastewater through the cooperation of adsorption and magnetization separation technologies. Firstly, magnetized biochar is adopted for adsorbing dye pollutants in the dye wastewater, and then a dye solution obtained after adsorption treatment is subjected to magnetization separation treatment by a magnet. According to the method, by conducting surface magnetization on the biochar, an adsorption material can be quickly separated and recycled, and after magnetization is completed, the magnetic cotton straw biochar has a good adsorption and removal effect on dye (methylene blue) in the printing and dyeing wastewater; meanwhile, the magnetic material has good stability, the effective separation of the water treatment adsorbent can be completedthrough an external magnetic field, the treatment process is simplified, and secondary pollution is prevented.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a method for treating dye waste water by adsorption cooperative magnetization separation technology. Background technique [0002] With the progress of society, people's life is more colorful, and the dye industry has also been developed. However, behind the development, there are many difficult problems, such as the increase of dye wastewater. It mainly comes from the production industry of dyes and dye intermediates. It is composed of various products and the mother liquor of intermediate crystallization, materials lost in the production process and sewage washed away from the ground. It has complex components, deep color, high toxicity, strong acidity and alkalinity, High salt content, difficult to handle and so on. It will not only affect the life activities of organisms, but also seriously affect human health and normal life, and cause irreparable losses to the environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12B01J20/20B01J20/30C02F101/30
CPCB01J20/06B01J20/20B01J2220/4806B01J2220/4825C02F1/283C02F1/48C02F2101/308
Inventor 马锋锋赵保卫李昱含
Owner LANZHOU JIAOTONG UNIV
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