System and method for treating wastewater containing nitrobenzene, aniline and cyclohexylamine

A technology for wastewater treatment and cyclohexylamine, which is applied in the field of wastewater treatment of aniline, nitrobenzene, and cyclohexylamine, can solve the problems of difficult wastewater degradation, improve biodegradability, improve biochemical properties, and increase B/C The effect of the ratio

Active Publication Date: 2016-06-22
JIANGSU SINORGCHEM TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention mainly solves the technical problem of difficult wastewater degradation existing in the prior art. The f

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  • System and method for treating wastewater containing nitrobenzene, aniline and cyclohexylamine
  • System and method for treating wastewater containing nitrobenzene, aniline and cyclohexylamine

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Embodiment Construction

[0026] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0027] refer to figure 1 , figure 2 Shown, a kind of wastewater treatment method containing nitrobenzene, aniline, cyclohexylamine of the present invention comprises the following steps,

[0028] S1. After the waste water containing nitrobenzene, aniline and cyclohexylamine is passed into the sump 1 for aeration and mixing, it is passed into the acid adjustment pond 2 to adjust the pH value to 2-4, and then passed into the catalytic oxidation pond 3, The reaction is carried out under the action of a catalytic oxidation reagent,

[0029] S2. Pass the wastewater after catalytic oxidation in the catalytic oxidation tank 3 into the pH neutralizati...

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Abstract

The invention discloses a device and a method for treating wastewater containing nitrobenzene, aniline and cyclohexylamine. The device comprises a water collection pool, an acid regulation pool, a catalytic oxidation pool, a PH neutralization pool, a sedimentation pool, a hydrolytic acidification pool, a primary anaerobic pool, a secondary anaerobic pool, a UASB (upflow anaerobic sludge blanket) pool, a contact oxidation pool, a primary aerobic pool, a secondary aerobic pool, a SBR (sequencing batch reactor) pool and a buffering pool. Multi-chain benzene ring substances in waste water are subjected to chain scission in the catalytic oxidation to obtain single-chain substances, a flocculating agent is added after the PH value is regulated through the neutralization pool, flocculated wastewater is subjected to slurry-water separation in the sedimentation pool, complex organic matters in an anaerobic system are decomposed into simple dissolved organic matters under the action of extracellular enzymes generated by zymogeneous bacteria, increase of a B/C ratio and improvement of wastewater biodegradability can be realized under the hydrolysis action of the hydrolytic acidification pool, residual pollutants in the wastewater are thoroughly degraded after treatment in the SBR pool, and after decolorization in an activated carbon adsorption tank, the treated wastewater can be discharged on standard.

Description

technical field [0001] The invention relates to the technical field of industrial waste water treatment, in particular to a waste water treatment method and system containing nitrobenzene, aniline and cyclohexylamine. Background technique [0002] Nitrobenzene, aniline, cyclohexylamine (including o-toluidine, m-toluidine, m-dinitrobenzene, etc.) The main components of organic waste water are nitrobenzene, aniline, phenols, inorganic salts, organic salts, amines , heterocyclic compounds, etc. This type of wastewater has "four highs", namely: high pollutant concentration, high salt content, high chroma and high toxicity, and has the characteristics of low B / C and poor biodegradability. The color of nitrobenzene wastewater is brownish red, and the color of aniline wastewater is black, with pungent odor and a certain amount of suspended solids. Therefore, effective pretreatment methods should be selected to greatly reduce the load of refractory organic pollutants in wastewater. ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/38
CPCC02F1/5245C02F1/56C02F1/66C02F1/722C02F1/725C02F3/02C02F3/1263C02F3/2846C02F3/286C02F9/00C02F2101/38C02F2301/08C02F2305/026
Inventor 王林成赵坤冯殿兴张兆栋高永华
Owner JIANGSU SINORGCHEM TECH CO LTD
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