Process and apparatus for treating waste water containing metal complex

A technology for complexing metal wastewater and wastewater, applied in water/sewage treatment, metallurgical wastewater treatment, chemical instruments and methods, etc., can solve the problems that ion exchange cannot completely remove complexing agents, low cost, and good treatment effect. Achieve strong catalytic activity and catalytic effect, prevent agglomeration or passivation, and achieve emission standards
CN101088936AInactive Publication Date: 2007-12-19ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2007-12-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The process of treating waste water containing metal complex includes: regulating pH value to 2-4 and adding H2O2, contacting with iron powder in a fluidized bed reactor to produce displacement reaction and complex eliminating reaction, adding alkali in a deposition tank one deposit metal ion, and separating supernatant and the lower precipitate. The process can prevent the aggregation and deactivation of iron powder in the reaction, and has greatly raised reaction efficiency, low cost and high waste water treating effect.
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Description

technical field

[0001] The invention relates to a wastewater treatment process, in particular to a process and a device for synergistically treating complex metal-containing wastewater by using iron powder reduction and Fenton oxidation. Background technique

[0002] Complexing agents are chemical reagents used in the production process of surface treatment and other industries. For example, in the electroplating industry, in order to enhance the dispersion ability of the plating solution and achieve a good coating effect, it is necessary to add such as nitrilotriacetic acid, ethylenediamine, tartrate, citrate, triethanolamine, organic phosphoric acid, EDTA, coke, etc. to the plating solution. Phosphoric acid, nicotinic acid and other complexing agents, these complexing agents can combine with metal ions to form strong and stable chelates, especially when the content of metal ions in wastewater is high, they can coordinate to form stable complexes. The metals that are easy ...

Claims

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