Technology for processing comprehensive waste water from acrylonitrile and acrylic fibers production

A technology that integrates waste water and treatment processes, applied in the field of environmental engineering, can solve the problems of difficult actual operation, easy pollution of membrane systems, high investment and operation costs, etc., and achieve the effect of improving biological treatment performance and high removal rate of total sulfur
CN102190408AActive Publication Date: 2011-09-21博瑞德环境集团股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
博瑞德环境集团股份有限公司
Publication Date
2011-09-21

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Abstract

The invention relates to a technology for processing comprehensive chemical waste water from acrylonitrile and acrylic fibers production and is directed to the field of environment engineering technology. According to the invention, an aeration reaction, a biology hydrolysis acidification, a denitrification nitrogen removal and an aerobic biological treatment are adopted. The waste water is classified into C, N and S grade. The toxicity problem for microbes caused by the waste water is solved; the biological treatment capability and waste water processing effect are improved. The technology is characterized by simple and reasonable process flow. The operation cost is reduced. The technology is suited for industrial application and biology processing of high sulfur high nitrogen organic waste water of the same kind.
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Description

technical field

[0001] The invention relates to a comprehensive wastewater treatment process for the production of acrylonitrile and acrylic fiber, which belongs to the technical field of environmental engineering. The method of the invention includes grid filtration, pre-aeration, hydrolytic acidification desulfurization, anaerobic decarburization, aerobic denitrification and other biological treatment processes, and is suitable for biological treatment of high-sulfur, high-nitrogen and high-COD wastewater of the same kind. Background technique

[0002] The production of acrylic fiber in our country's existing technology mainly includes four production processes of sodium thiocyanate one-step method, sodium thiocyanate two-step method, wet method and dry method, but its monomers are all acrylonitrile, usually produced by propylene ammoxidation method Acrylonitrile is obtained. The solvents used in the above process mainly include sodium thiocyanate (NaSCN), dimethylformami...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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