Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

Inactive Publication Date: 2014-09-10
LIDA ENVIRONMENT ENG DALIAN ECONOMIC TECH DEV ZONE
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 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

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The present invention is a method for treating cyanide-containing wastewater, comprising the following steps:

[0012] a. Add alkali to the cyanide-containing wastewater to adjust the pH to between 10-11;

[0013] B, add oxidizing agent to the solution after a step treatment, described oxidizing agent can be sodium hypochlorite, the highly toxic complex cyanide ion in the waste water is oxidized into the low toxic cyanate ion, promptly breaks cyanide once;

[0014] c. Add acid to the solution treated in step b to adjust the pH to between 7-8;

[0015] D, continue to add sodium hypochlorite in the solution after c step treatment, make cyanate ion be oxidized into N 2 Overflow from waste water, that is, secondary cyanide breaking.

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
Login to View More

PUM

No PUM Login to View More

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.

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

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/76
Inventor 李秀婷唐立军袁刚刘东晓孙德文毕义
Owner LIDA ENVIRONMENT ENG DALIAN ECONOMIC TECH DEV ZONE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com