Method of recovery phenol from waste water and system thereof

A technology for recovering phenol and waste water, which is applied in chemical instruments and methods, extraction water/sewage treatment, and preparation of organic compounds. The effect of small solvent loss and low energy consumption
CN1919818AInactive Publication Date: 2007-02-28TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2007-02-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a recycling method and system in the phenolwaste water, which comprises the following steps: adopting ketone organic solvent as extractant; adopting extracting tower, organic solvent recycling tower and stripping tower to extract; distilling; stripping to obtain the product. The system is composed of extracting tower, organic solvent recycling tower, stripping tower and corresponding connecting pipe.
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Description

technical field

[0001] The invention relates to a chemical separation and water treatment technology, in particular to a method and system for recovering phenol from aqueous solution or waste water. Background technique

[0002] Phenol-containing wastewater or aqueous solution mainly comes from chemical enterprises such as petrochemical plants, resin plants, coal gasification plants, oil refineries, and coking plants. Phenol is one of the important pollutants in water bodies. Due to different industrial categories, product types and process conditions, the wastewater composition and phenolic concentration vary greatly. It is generally divided into acidic, alkaline, neutral phenolic wastewater and volatile and non-volatile phenolic wastewater.

[0003] Due to the different composition, acidity and alkalinity, and concentration of phenolic wastewater, the treatment methods are also different. At present, the methods for treating phenolic wastewater in industry are generally d...

Claims

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