Chemical fiber plant phenol wastewater removal process

Definition of synthetic fiber

Synthetic fibers (synthetics) are a type of chemical fiber, and are a general term for chemical fibers obtained by using a synthetic polymer compound as a raw material. It is a linear organic polymer compound, such as polyacrylonitrile, polyester, polyamide, etc., which is synthesized by a polyaddition or polycondensation reaction using a small molecule organic compound as a raw material. It can be seen from the classification of fibers that it belongs to a category of chemical fibers.

Method for preparing synthetic fiber

The chemical composition of synthetic fibers is completely different from that of natural fibers. It is an organic substance processed from some substances that do not contain cellulose or protein, such as petroleum, coal, natural gas, limestone or agricultural by-products, and then chemically synthesized and mechanically processed. The method of making fibers. Such as polyester, nylon, acrylic, polypropylene, polyvinyl chloride and so on.

Use of synthetic fibers

Since the synthetic fiber is a synthetic fiber which has a suitable molecular weight and has a soluble (or fusible) linear polymer, it is obtained by spin forming and post-treatment. Such polymers having fiber forming properties are generally referred to as fiber-forming polymers. Compared with natural fibers and rayon, synthetic fiber raw materials are produced by artificial synthesis, and production is not limited by natural conditions. In addition to the general superior properties of synthetic fibers, such as high strength, light weight, easy to wash and dry, good elasticity, and not afraid of mold, synthetic fibers each have certain unique properties.

Contaminants in the process of synthetic fibers

Chemical synthetic fiber plant will emit chlorine gas, ammonia gas, sulfur dioxide, carbon oxide, hydrogen sulfide, aniline, nitrobenzene, benzene, nitric acid. If you live in such an environment for a long time, you must infect the respiratory tract. It is inevitable that you will have long erythema and heavy skin ulceration. Noise pollution will affect the surrounding residential areas, and chemical synthetic fiber plants will also cause water pollution, which will lead to drinking water pollution.

Elemental analysis of sewage in the process of synthetic fiber

Various types of wastewater generated during the production of chemical synthetic fiber plants, such as PET wastewater, PTA wastewater, cotton pulp black liquor, viscose wastewater, etc. The wastewater has complex composition, often containing strong acid, strong alkali, cellulose and hemicellulose, alcohol, pectin, etc., as well as various toxic substances. For example, the main pollutants in PET wastewater are ethylene glycol, ethylene glycol, and acetic acid. Glycol, terephthalic acid and its intermediates and oligomers; PTA wastewater mainly contains phthalic acid, para-xylene, benzoic acid, methyl acetate, acetic acid and other pollutants; poly- vinegar wastewater contains, PTA, B Contaminants such as aldehydes, EG, diethylene glycol, triethylene glycol, and spinning oils.

Removal process of phenol-containing wastewater from complex extraction chemical synthesis fiber plant

The core of the technology is a new complex extractant and a high-efficiency centrifugal extractor. The complex extraction process for chemically synthesized fiber plants containing phenol wastewater is a combination of reversible complexation and extraction and separation.

Complex extraction method for the treatment of chemically synthesized fiber plant containing phenol wastewater, simple operation, low equipment investment, low consumption, recycling of phenols can be reused, and the residue containing phenol is lower than the emission standard, which can create direct social and economic benefits. Other extraction and dephenolization technology in China.

Characteristics of phenol-containing wastewater treatment equipment

The CWL centrifugal extractor mixes and separates the multi-functional extraction equipment. It is mainly used in liquid-liquid extraction, neutralization or water washing purification processes in environmental protection, fine chemicals, petrochemical, pharmaceutical, hydrometallurgical and other industries.

Compared with other extraction equipment, CWL centrifugal extractor has the advantages of small equipment volume, high extraction efficiency, large extraction flow ratio, wide application of material processing system, etc., which improves product quality, reduces consumption, simplifies the process, facilitates operation, and expands. Production capacity and reduction of floor space have a good effect.

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