Treatment method for cyanogen-containing wastewater

A treatment method, a technology for cyanide wastewater, applied in water/sewage multi-stage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve environmental hazards and other problems, achieve stable and up-to-standard discharge, and have good treatment effects , the effect of simple operation
CN104030477AInactive Publication Date: 2014-09-10LIDA ENVIRONMENT ENG DALIAN ECONOMIC TECH DEV ZONE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
LIDA ENVIRONMENT ENG DALIAN ECONOMIC TECH DEV ZONE
Publication Date
2014-09-10
Estimated Expiration
Not applicable Β· inactive patent
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Abstract

The invention discloses a treatment method for cyanogen-containing wastewater. The treatment method comprises the following steps: a, adding alkali in the cyanogen-containing wastewater to adjust a pH value to 10 to 11; b, adding an oxidizing agent into the solution treated in the step a so as to oxidize complex cyanide ions with severe toxicity in the wastewater into cyanate ions with low toxicity; c, adding acid into the solution treated in the step b so as to adjust a pH value to 7 to 8; and d, continuing adding the oxidizing agent into the solution treated in the step c so as to allow the cyanate ions to be oxidized into N2 which overflows out from the wastewater. The treatment method has the characteristics of simple operation, a good treating effect and capacity of realizing long-term stable standard discharge.
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Description

technical field

[0001] The invention relates to the field of wastewater treatment, in particular to a method for treating cyanide-containing wastewater. Background technique

[0002] Because cyanide-containing wastewater contains highly toxic cyanide, if it is discharged without treatment to meet the standard, it will cause great harm to the environment. Contents of the invention

[0003] The object of the present invention is to overcome above-mentioned insufficient problem, a kind of cyanogen-containing wastewater treatment method is provided.

[0004] The technical scheme that the present invention adopts for realizing the above object is: cyanogen-containing waste water treatment method, comprises the following steps:

[0005] a. Add alkali to the cyanide-containing wastewater to adjust the pH to between 10-11;

[0006] B, add oxidizing agent in the solution after a step treatment, the highly toxic complex cyanide ion in the waste water is oxidized into the low toxic...

Claims

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