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

Treatment method of industrial waste water containing diazodinitrophenol

A technology of dinitrodiazophenol and industrial wastewater, which is applied in water/sewage treatment, natural water body treatment, neutralized water/sewage treatment, etc. It can solve problems such as difficulty in obtaining satisfactory results and difficulty in filtration and treatment, and achieve eradication Pollution and harm, low cost, good effect

Inactive Publication Date: 2011-04-20
SHANGRAO NORMAL UNIV
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of a large amount of iron filings and carbon (graphite) particles, this method will inevitably produce a large amount of solid waste, which will bring certain difficulties to filtration and subsequent treatment.
[0008] In addition, there are other various methods, but it is difficult to achieve satisfactory results.

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
  • Treatment method of industrial waste water containing diazodinitrophenol
  • Treatment method of industrial waste water containing diazodinitrophenol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] best practice

[0022] Send DDNP acidic wastewater (including washing wastewater and ground flushing wastewater) into the explosion-proof tank, and add sodium hydroxide solution until the pH value reaches 12.5 while stirring. After 3 hours of anti-explosion treatment, the acidic wastewater is sent to the sewage regulating tank and slowly mixed with the alkaline wastewater poured in advance. Adjust the acidity to pH 2.5 with sulfuric acid and filter. The separated waste water enters the electrolytic cell, and the concentration of 30% hydrogen peroxide solution is added in the cell, and the addition amount is by weight: m 废水 :m 过氧化氢 =1000:2.5, use graphite as the electrode, electrolyze for more than 4 hours under a DC power supply of about 10v. Send the electrolyzed wastewater to the coagulation tank, adjust the pH value to 8 with saturated lime water, coagulate for 2 hours, and filter. The filtered waste water flows into the oxidation pond, and the pH value of the wa...

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 present invention provides a novel treatment method of industrial waste water containing diazodinitrophenol, which comprises the main steps of: explosion elimination, acidification, electrolysis, coagulation, oxidization and neutralization. Firstly DDNP acid waste water is subjected to explosion elimination and mixed with DDNP alkaline waste water, most nitrophenol compounds are precipitated under certain acidic condition, residual organic compounds are eliminated totally by electrolysis, coagulation and oxidizing degradation, after neutralization, the waste water can meet national emission standards without secondary pollution to environment.

Description

technical field [0001] The invention relates to a treatment method of nitrophenol industrial wastewater, in particular to a treatment method of dinitrodiazophenol industrial wastewater. Background technique [0002] Dinitrodiazonium phenol is one of the main explosives and is widely used in various pyrotechnics, especially in industrial blasting detonators. However, due to the discharge of a large number of toxic and harmful substances such as dinitrodiazophenol, aminopicric acid, picric acid, sodium thiosulfate, and sodium sulfide during the production process, it can cause serious pollution to the environment. [0003] Relevant units at home and abroad have conducted extensive research on the treatment methods of the above-mentioned wastewater. Up to now, the treatment methods adopted mainly include the following: [0004] (1) Adsorption method: use the comprehensive effect of physical adsorption, chemical adsorption and exchange adsorption between activated carbon, sulfo...

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): C02F9/06C02F1/66C02F1/461C02F1/52C02F1/72C02F103/36
Inventor 饶敏汤谷平柳和生郑大贵谢国豪陈广大饶绍伦陈伟华楼饶成
Owner SHANGRAO NORMAL UNIV
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