Application of titanium trichloride and treatment method of rhenium-containing wastewater

A technology of titanium trichloride and treatment method, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as unsatisfactory perrhenate removal effect and complicated process , to achieve the effect of good work, simple operation and large size
CN113247998AActive Publication Date: 2021-08-13LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LOGISTICAL ENGINEERING UNIVERSITY OF PLA
Publication Date
2021-08-13

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Abstract

The invention provides an application of titanium trichloride and a treatment method of rhenium-containing wastewater, and relates to the technical field of wastewater treatment. The invention relates to the application of titanium trichloride, in particular to the application of titanium trichloride as a coagulant in wastewater. The rhenium-containing wastewater treatment method comprises the following steps: taking wastewater containing perrhenate ions, adding a titanium trichloride solution, and adding a sodium hydroxide solution to adjust the pH value to 3.2-9.2; and S2, stirring the wastewater of which the pH value is adjusted in two stages, standing for layering after the stirring is finished, and filtering. In the wastewater after the pH value is adjusted, the molar ratio of titanium trichloride to perrhenate ions is (5-30): 1. The invention provides a new application of titanium trichloride, and solves the problems that in the existing rhenium-containing wastewater, the removal effect of perrhenate is not ideal, and the technological process is complex.
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Description

technical field

[0001] The invention relates to the technical field of wastewater treatment, in particular to an application of titanium trichloride and a treatment method for rhenium-containing wastewater. Background technique

[0002] Titanium trichloride is a dark purple crystal, easy to deliquescence. Commonly used as analytical reagents and reducing agents, polypropylene catalysts, etc. Titanium trichloride is usually prepared by reducing titanium tetrachloride with hydrogen. It can be dissolved in cold water, hot water and HCl, easily soluble in ethanol, insoluble in ether, and can be oxidized to Ti(IV) in air. Moisture can accelerate the oxidation process, so it must be kept in CO 2 atmosphere.

[0003] Rhenium is a sparse refractory metal with high melting point, wear resistance, corrosion resistance, stable mechanical properties and other excellent properties. It is widely used in national defense, aerospace, nuclear energy, electronics and chemical industries. ...

Claims

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