Method for treating dinitro-diazophenol (DDNP) primary explosive production wastewater

A technology for the production of waste water and treatment methods, which is applied in the direction of energy waste water treatment, heating water/sewage treatment, combustion methods, etc. It can solve the problems of not being able to achieve zero discharge, etc., and achieve improved efficiency, increased heating effect, good economic benefits and social benefits. benefit effect

Active Publication Date: 2013-09-25
山东圣世达化工有限责任公司
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] The above patents focus on the reuse of sewage, and the use of adsorption methods for treatment, etc., but cannot achieve zero discharge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The production wastewater of DDNP primary explosive mainly includes the reaction mother liquor and DDNP drug washing water, including almost all toxic nitrobenzene compounds. Calculated on the basis of an annual output of 40 million detonators, about 1 ton of process wastewater is produced every day, and the content of toxic substances in process wastewater is about 2.0%, inorganic salts Na 2 S 2 o 3 , NaOH, NaCl, NaNO 2 The total salt content is about 5%, and the total salt content is about 7%; other production wastewater is flushing water and reaction tank soaking water, the pollution is very small, the total content of toxic substances and inorganic salts is less than 1.0%, and the water volume is about 1 ton per day . Use the concentration of toxic compounds or solid residues in the waste water to separate the two parts, use containers for separate storage and treatment, and use pipelines to connect low-concentration waste water to the sedimentation tank. Then c...

Embodiment 2

[0029] After the low-concentration wastewater is evaporated by the boiler, the residual liquid has a high concentration. The high-concentration residual liquid is sprayed on the solid fuel for evaporation and concentration, and the evaporated solid fuel containing a small amount of water is put into the boiler for incineration.

Embodiment 3

[0031] Solid fuel adopts charcoal.

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PUM

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Abstract

The invention relates to a method for treating dinitro-diazophenol (DDNP) primary explosive production wastewater, belonging to the technical field of primary explosive sewage environmental-friendly treatment. The method is characterized by comprising the following steps: 1), carrying out classification: carrying out separation treatment on wastewater generated in the DDNP primary explosive production process according to the concentrations of poisonous compounds to obtain high-concentration wastewater and low-concentration wastewater, and respectively storing the high-concentration wastewater and the low-concentration wastewater; 2) carrying out high-concentration wastewater treatment: spraying the high-concentration wastewater on solid fuel, carrying out evaporation concentration, placing the solid fuel with less water after evaporation into a boiler, and incinerating the solid fuel with less water; 3) carrying out low-concentration wastewater treatment: introducing the low-concentration wastewater into a settling pond, settling the low-concentration wastewater, and utilizing the boiler to evaporate the supernatant liquor; and 4), periodically fishing out and cleaning the settling pond, blending solid precipitates in the settling pond into the solid fuel, and incinerating the solid precipitates and the solid fuel together. The method of the invention has the advantages that the wastewater treatment is safe and environmental-friendly, zero discharge of the DDNP primary explosive sewage is achieved, energy resources are saved, and the service life of production equipment is not influenced.

Description

technical field [0001] The invention provides a method for treating waste water produced by DDNP priming explosives, which belongs to the technical field of environmental protection treatment of priming explosive sewage. Background technique [0002] With the development of the civil explosive equipment industry, how to choose a suitable primer, especially the sewage treatment technology of the primer, has always restricted the development of a variety of primers, especially the development of traditional DDNP primers, and new primers In addition to the high cost, there is still a certain degree of uncertainty in product performance, and some sewage generated contains heavy metal ions, and it is difficult to achieve zero discharge of sewage. At present, the sewage produced in the production process of the detonating agent DDNP is mainly the reaction mother liquor and the washing water of the DDNP medicine, including almost all toxic nitrobenzene compounds (high concentration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/04C02F1/04C02F1/14
CPCY02A20/141Y02A20/212Y02W10/33Y02W10/37
Inventor 郑险光梁金刚江道友于文林王雅锋王可法赵迎春
Owner 山东圣世达化工有限责任公司
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