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DMF wastewater "gold rush", process equipment all rely on it

Views: 0     Author: Site Editor     Publish Time: 2022-05-02      Origin: Site

DMF wastewater "gold rush", process equipment all rely on it

N,N- dimethylformamide (DMF) is a kind of organic solvent with stable chemical properties, high boiling point and excellent performance. Because it can be arbitrarily soluble with water and most organic solvents (except halogenated hydrocarbon), known as "universal solvent", it is widely used in pesticide, chemical industry, medicine and other fields.

According to statistics, there is a large amount of DMF in the wastewater discharged in the production process of chemical products, among which the leather industry alone discharged about 100 million tons of WASTEWATER containing DMF every year. On the one hand, DMF is confirmed as a human carcinogen by the United States. It can damage human health through breathing and skin contact, and will cause serious damage to the liver if the human body is exposed and absorbed for a long time. On the other hand, DMF is expensive and needs to be recycled. Therefore, in order to achieve green development, it is very necessary to improve economic efficiency for wastewater treatment containing DMF.

At present, the main treatment methods for wastewater containing DMF in China are biological method, extraction method,DMF CAS 68 12 2 for sale - YuanfarChemicals adsorption method and chemical method (supercritical water oxidation).

Processing method

Adsorption method

In order to purify the wastewater, one or more substances are adsorbed on the solid surface by solid porous medium, and the saturated adsorption medium needs further treatment.

Supercritical water oxidation

Using the characteristics of supercritical water, the organic pollutants in wastewater react with oxygen in supercritical water, and oxidize them into non-toxic and harmless COz, Hz0 and other simple small molecule compounds.

Extraction method

Refers to the specific organic phase incompatible with water and density less than water and treated water contact, through physical or chemical action, so that the original dissolved in the water of a component from the water phase to the organic phase transfer process conclusion.

Although the biological method has the advantages of environmental friendliness, mild conditions and benign circulation of substances, it takes too long to treat DMF wastewater, does not degrade thoroughly, and also causes microbial poisoning, which has a great impact on the biological treatment. Supercritical water oxidation is suitable for the treatment of organic wastewater which is difficult to be treated by biodegradation, and the reaction speed is fast. However, the reaction conditions need high temperature and high pressure, and the equipment is easy to corrosion, so it is difficult to large-scale application. Adsorption method has the advantages of short process, simple operation and good treatment effect, but poor reproducibility. Compared with other methods, extraction method has the advantages of less pollution, recyclable extraction agent, simple process and broad application prospect.

In order to make the extraction equipment to better play to the role of the DMF wastewater treatment, extraction co., LTD., zhengzhou days after years of research, the development of new type of liquid liquid centrifugal extraction equipment.cwl - M series centrifugal extraction machine, with high efficiency and energy saving, maintenance is simple, high degree of automation, environmental protection effect is good wait for an advantage, has been widely used.

YUANFAR CHEMICAL have been engaged in chemical business since 2001, and has our own factories  manufacturing hydrazine product

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