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Treatment method of industrial waste water containing diazodinitrophenol

A technology of dinitrodiazophenol and industrial wastewater, which is applied in water/sewage treatment, natural water 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 hazards, low cost, scientific and reasonable technological process

Inactive Publication Date: 2012-07-25
SHANGRAO NORMAL UNIV
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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

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

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Embodiment Construction

[0021] best practice

[0022] Send the DDNP acidic waste water 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 adjustment tank and slowly mixed with the alkaline wastewater poured in advance, and the acidity is adjusted to pH 2.5 with sulfuric acid, and filtered. 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 electrode, and electrolyze for more than 4 hours under 10v DC power supply. 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 waste water is adjusted to 3 with sulfuric acid, and then a...

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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...

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Application Information

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Patent Type & Authority Patents(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
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