Mixed treatment method of explosive waste water and nitrobenzene and aniline waster water

A technology for nitrobenzene wastewater and explosive wastewater, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of low concentration of microbial tolerance and slow degradation rate, etc.

Active Publication Date: 2013-06-19
GANSU YINGUANG CHEM IND GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biological treatment technology is safe in operation, low in operating cost, and can realize complete mineralization of pollutants, but there are also problems such as low concentration of microbial tolerance to pollution, slow degradation rate, screening and cultivation of special strains, etc.

Method used

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  • Mixed treatment method of explosive waste water and nitrobenzene and aniline waster water

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the mixed wastewater treatment embodiment. The spirit and scope of the present invention disclosed above are not limited by the examples.

[0029] best practice

[0030] Wastewater from multiple explosive production lines enters the adjustment tank and adsorption column at a rate of 15-20 tons per hour, and each adsorption column contains about 7 tons of activated carbon, a total of 3 sets; nitrobenzene wastewater from a 200kt / a dinitrotoluene plant 20-25 tons / hour enters the adjustment tank and adsorption column, each adsorption column contains about 7 tons of activated carbon, a total of 3 sets; mixed wastewater enters the neutralization drum, aeration tank, and vertical sedimentation at 35-45 tons / hour The amount of limestone added to the tower and neutralization drum is 2.8 tons / day, a total of 3 sets; the effluent is combined with the aniline wastewater from the 100kt / a toluene diisocyanate ...

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Abstract

The invention belongs to the field of industrial waster water treatment, and more particularly relates to the technical field of waste water treatment of mixed waste water containing pollutant such as nitramines, nitrobenzenes and anilines and the like in the explosive and polyurethane industry by using pretreatment in combination with a biochemistry method. A mixed treatment method of explosive waste water and nitrobenzene and aniline waster water is characterized in that the waste water reaches the recycling standard after being subjected to procedures, such as activated carbon adsorption, neutralization with limestone and caustic soda liquid, flocculation settling, biochemical treatment with an up-flow anaerobic sludge blanket (UASB)/AF (Anaerobic filter) and activated sludge, processing with a ceramisite biological aerated filter (BAF), filtration and adsorption, waste activated carbon and sludge after-treatment. The mixed treatment method disclosed by the invention has the advantages of stable and reliable equipment operation, qualified effluent continuity, small excess sludge amount, low energy consumption, reasonable process, strong applicability and relatively good shock resistance and operability.

Description

technical field [0001] The invention belongs to the field of industrial waste water treatment, specifically relates to the technical field of treating waste water mixed with pollutants such as nitramines, nitrobenzenes and anilines produced in explosives and polyurethane industries by pretreatment combined with biochemical methods. Background technique [0002] Gansu Yinguang Chemical Industry Group Co., Ltd. will produce a large amount of nitramines, dinitrotoluene (DNT) and toluene diamine in the production process of multiple explosives production lines and dinitrotoluene (DNT) and toluene diisocyanate (TDI) (TDA) production wastewater. The components of wastewater are relatively complex, and the indicators of nitramines, nitrobenzenes, aniline pollutants, COD, chroma, pH (acidity) and other indicators in wastewater seriously exceed the standard. The pollutants contained in nitramine wastewater are mainly RDX, HMX, Taian and organic solvents such as acetic acid, acetone,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 曾敬姜振明张路遥孟庆海赵伟宾聂红凉史玉乾毛迎春高启全李晓燕
Owner GANSU YINGUANG CHEM IND GRP CO LTD
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