Technology for treating inorganic fluorine-organic fluorine industrial waste water

A technology for industrial wastewater and organic fluorine, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, water pollutants, etc. To achieve the effect of saving cost, saving consumption and reducing load

Active Publication Date: 2014-06-18
陕西延长石油集团氟硅化工有限公司 +1
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] In order to overcome the problems in the prior art, the object of the present invention is to provide a process for treating industrial wastewater containing inorganic fluorine-organic fluorine, so that the fluorine content in the treated wastewater reaches the national standard, thereby solving the problem that the existing process cannot handle organic fluorine The problem of coexistence of waste water and high-concentration inorganic fluorine

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Technology for treating inorganic fluorine-organic fluorine industrial waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] 1) According to the conventional process, air is introduced into the industrial wastewater containing high concentration of inorganic fluorine-organic fluorine to blow off volatile substances, and the waste water after volatile matter removal is obtained; after measurement, the waste water after volatile matter removal is low-turbidity waste water; collect The escaped gas can be directly discharged after being adsorbed by the activated carbon adsorption column;

[0067] 2) UV-Fe 2+ / Fe 3+ - Oxidative defluorination of hydrogen peroxide system

[0068] Press Fe 2+ with Fe 3+ The molar ratio of the substance is 1:4, ferric sulfate and ferrous sulfate are dissolved in the sulfuric acid solution of pH=2, obtain the mixed solution of ferric sulfate and ferrous sulfate, namely obtain the Fe-containing 2+ / Fe 3+ solutions of mixed ions;

[0069] Using a 185nm-254nm ultraviolet lamp as a light source, first adjust the pH value of the wastewater after removing volatiles, t...

Embodiment 2

[0073] 1) According to the conventional process, air is introduced into the industrial wastewater containing high concentration of inorganic fluorine-organic fluorine to blow off volatile substances, and the waste water after volatile matter removal is obtained; after measurement, the waste water after volatile matter removal is low-turbidity waste water; collect The escaped gas can be directly discharged after being adsorbed by the activated carbon adsorption column;

[0074] 2) UV-Fe 2+ / Fe 3+ - Oxidative defluorination of hydrogen peroxide system

[0075] Press Fe 2+ with Fe 3+ The molar ratio of the substance is 2:3, dissolving ferric nitrate and ferrous nitrate in the sulfuric acid solution of pH=2, obtains the mixed solution of ferric nitrate and ferrous nitrate, promptly obtains Fe-containing 2+ / Fe 3+ solutions of mixed ions;

[0076] Using a 185nm-254nm ultraviolet lamp as the light source, first adjust the pH value of the wastewater after removing volatiles, th...

Embodiment 3

[0080] 1) According to the conventional process, air is introduced into the industrial wastewater containing high concentration of inorganic fluorine-organic fluorine to blow off volatile substances, and the waste water after volatile matter removal is obtained; after measurement, the waste water after volatile matter removal is low-turbidity waste water; collect The escaped gas can be directly discharged through the adsorption of activated carbon adsorption column;

[0081] 2) UV-Fe 2+ / Fe 3+ - Oxidative defluorination of hydrogen peroxide system

[0082] Press Fe 2+ with Fe 3+ The molar ratio of the substance is 1:2, and ferric ammonium sulfate and ferrous ammonium sulfate are dissolved in the sulfuric acid solution of pH=2 to obtain a mixed solution of ferric ammonium sulfate and ferrous ammonium sulfate, that is, to obtain Fe-containing ammonium 2+ / Fe 3+ solutions of mixed ions;

[0083] Using a 185nm-254nm ultraviolet lamp as the light source, first adjust the pH v...

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 relates to a technology for treating inorganic fluorine-organic fluorine industrial waste water. The technology comprises the following steps: introducing air into inorganic fluorine-organic fluorine industrial waste water with the inorganic fluorine content of more than 5000mg/L, so as to blow off volatile matters; if the waste water in which volatile matters are removed is low-turbidity waste water, directly carrying out UV-Fe<3+>/Fe<3+> hydrogen peroxide system oxidation defluorination; if the waste water in which volatile matters are removed is high-turbidity waste water, descending the turbid of the high-turbidity waste water to obtain low-turbidity waste water, and then carrying out UV-Fe<3+>/Fe<3+> hydrogen peroxide system oxidation defluorination; and carrying out Fe<3+>-lime-pulverized fuel ash defluorination on the waste water which is subjected to the UV-Fe<3+>/Fe<3+> hydrogen peroxide system oxidation defluorination. The technology is applicable to treatment of organic fluorine industrial waste water with high acidity and high inorganic fluorine content (F- is more than 5000mg/L); the purpose of simultaneously removing organic fluorine and inorganic fluorine pollutants is achieved by combining the organic fluorine degradation and inorganic fluorine removal.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a process for treating industrial wastewater containing inorganic fluorine-organic fluorine. Background technique [0002] Organic fluorine materials mainly include chlorofluorocarbons and their substitutes, fluorine-containing polymers and fluorine-containing fine chemicals. Organic fluorine materials have good chemical stability and thermal stability, and have excellent electrical properties. They are widely used in military industry, electronics, electrical appliances, and machinery. , chemicals and textiles and other fields, so the organic fluorine chemical industry has developed rapidly in recent years, and the global output of organic fluorine materials has increased by more than 10% annually. The Chinese government also supports the organic fluorine chemical industry as a key industry and encourages its priority development , and included it in the...

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): C02F9/04C02F101/14C02F101/36
Inventor 李立孟昭福丁利群闫小武龚宁刘艳萍李忠强孟利涛王义民刘燕
Owner 陕西延长石油集团氟硅化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap