Method for treating 2,4,6-trinitrotoluene waste water and application thereof

A trinitrotoluene and waste water technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Unstable effect and other problems, to achieve the effect of stable treatment effect, avoid inhibition or side effects, and short domestication period

A trinitrotoluene and waste water technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Unstable effect and other problems, to achieve the effect of stable treatment effect, avoid inhibition or side effects, and short domestication period

CN101830606AActive Publication Date: 2010-09-15PEKING UNIV +1
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  • Method for treating 2,4,6-trinitrotoluene waste water and application thereof
  • Method for treating 2,4,6-trinitrotoluene waste water and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Adopt the present invention to treat the TNT depressurized water of an explosive factory, the COD concentration of raw water is 300mg / L, the concentration of TNT+DNT (dinitrotoluene)+MNT (-nitrotoluene) is 100mg / L, and the treatment capacity is 6000m 3 / d, the water temperature in I-AF and I-BAF is controlled at 20°C-40°C, the hydraulic retention time is 12h and 16h respectively, the concentration of COD in the effluent is 60mg / L, the concentration of nitrobenzene is 2mg / L, and the concentration of aniline It is 1mg / L.

Embodiment 2

[0027] The present invention is used to treat TNT refined waste water of an explosives factory. After the raw water is pretreated, the COD concentration is 800mg / L, the TNT+DNT+MNT concentration is 150mg / L, and the treatment capacity is 380m 3 / d, the water temperature in I-AF and I-BAF is controlled at 20°C-40°C, the hydraulic retention time is 20h and 26h respectively, the final effluent COD concentration is 100mg / L, nitrobenzene concentration is 2mg / L, aniline concentration It is 1mg / L.

Embodiment 3

[0029] Using the present invention to treat nitrobenzene and aniline wastewater in a chemical plant, the COD concentration of the raw water after pretreatment is 1500mg / L, the nitrobenzene concentration is 250mg / L, the aniline concentration is 600mg / L, and the treatment capacity is 3600m 3 / d, the water temperature in I-AF and I-BAF is controlled at 20°C-40°C, the hydraulic retention time is 28h and 30h respectively, the concentration of COD in the effluent is 100mg / L, the concentration of nitrobenzene is 2mg / L, and the concentration of aniline is 1mg / L.

[0030] It can be seen from the above examples that the present invention has a good treatment effect on TNT wastewater of different water quality and similar wastewater.

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Abstract

The invention provides a method for treating 2,4,6-trinitrotoluene (TNT for short) waste water. In the invention, waste water is mainly treated by immobilized microorganisms, an anaerobic biological filter (I-AF) and immobilized microorganisms and a biological aerated filter (I-BAF), wherein the waste water enters a collecting tank, is lifted by a pump to enter a regulating tank and enters a setting tank after being homogenized and neutralized by the regulating tank so as to remove suspended substances (SS) in the waste water; the effluent is discharged after reaching standards after enteringthree-stage I-AF and five-stage I-BAF for further treatment. The specific steps of the method are shown in the specification. The invention has the advantages that biological treatment adopts an immobilized microorganism technology, which improves the poison resistance of the microorganisms, realizes the high-efficiency removal on toxic and harmful substances of nitrobenzene and the like, reducesthe treatment cost and realizes the standard-reaching discharge of the waste water. The application of the invention is not only suitable for treating the TNT waste water but also is applied to treating nitrobenzene and aniline contained pollutants and organic waste water thereof.

Description

technical field [0001] The invention belongs to the field of industrial waste water treatment, and in particular relates to a method for waste water containing nitrobenzene pollutants in the 2.4.6-trinitrotoluene (abbreviated as TNT) industry and an application thereof. Background technique [0002] 2.4.6-Nitrobenzene compounds in trinitrotoluene wastewater are a class of toxic organic pollutants with strong carcinogenicity and mutagenicity. They are listed as environmental priority pollutants by the U.S. Environmental Protection Agency. The conversion of nitrobenzene is a difficult biodegradable compound, which is highly toxic to humans and other organisms, so many countries have strictly restricted the emission standards of nitrobenzene. In view of the high toxicity of nitrobenzene, the effect of traditional biological methods on these pollutants is poor, and it is difficult to ensure that the emissions meet the standards. At present, nitrotoluene wastewater is mainly con...

Claims

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Application Information

Patent Timeline
15 Sep 2010
Publication
CN101830606A
IPC
C02F9/14; C02F101/38
Inventors
叶正芳; 王中友