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A kind of treatment method of chemical waste water containing aniline

A chemical wastewater and treatment method technology, applied in the direction of oxidation water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of long treatment period, complicated process, insufficient treatment of aniline compounds, etc., and achieve improvement Oxidation efficiency, effect of improving removal rate

Active Publication Date: 2021-10-08
HEBEI CAIKE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that the existing process for treating aniline chemical wastewater is complicated, the treatment period is long, and the treatment of aniline compounds is insufficient, the present invention provides a treatment method for aniline-containing chemical wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A treatment method for aniline-containing chemical wastewater, comprising the following steps:

[0022] a. Removal of impurities: add soybean meal to the aniline chemical wastewater, and the mass ratio of soybean meal to waste water is 1:500. Stand in the treatment tank for 2 days to separate the sediment and liquid; soybean meal is the dregs left after soybean oil extraction, which is cheap and low in treatment cost, and can effectively precipitate non-ferrous heavy metal substances in wastewater and absorb some impurities. After standing , Separation of sediment and liquid, can effectively remove large particles of impurities and suspended substances.

[0023] b. Filtration and decolorization: the liquid separated in step a is passed through the filter layer composed of activated carbon particle layer and activated carbon fiber layer; The fiber layer can effectively filter out the residual impurities and macromolecular substances in the wastewater. The filter layer a...

Embodiment 2

[0028] a. Removal of impurities: add soybean meal to the aniline chemical waste water, and the mass ratio of the added amount of soybean meal to waste water is 1:800. Stand in the treatment tank for 3 days to separate the sediment and liquid; soybean meal is the bean dregs left after soybean oil extraction, which is cheap and low in treatment cost, and can effectively precipitate non-ferrous heavy metal substances in wastewater and absorb some impurities. After standing , Separation of sediment and liquid, can effectively remove large particles of impurities and suspended substances.

[0029] b. Filtration and decolorization: the liquid separated in step a is passed through the filter layer composed of activated carbon particle layer and activated carbon fiber layer; The fiber layer can effectively filter out the residual impurities and macromolecular substances in the wastewater. The filter layer also has the functions of deodorization and decolorization, which can further pu...

Embodiment 3

[0034] a. Removal of impurities: add soybean meal to the wastewater of aniline chemical industry, and the mass ratio of soybean meal to waste water is 1:1000. Stand still in the treatment tank for 5 days to separate the sediment and liquid; soybean meal is the dregs left after soybean oil extraction, which is cheap and low in treatment cost, and can effectively precipitate non-ferrous heavy metal substances in wastewater and absorb some impurities. After standing , Separation of sediment and liquid, can effectively remove large particles of impurities and suspended substances.

[0035]b. Filtration and decolorization: the liquid separated in step a is passed through the filter layer composed of activated carbon particle layer and activated carbon fiber layer; The fiber layer can effectively filter out the residual impurities and macromolecular substances in the wastewater. The filter layer also has the functions of deodorization and decolorization, which can further purify the...

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Abstract

The invention relates to the technical field of waste water treatment, and specifically discloses a treatment method for chemical waste water containing aniline. The treatment method of the aniline chemical wastewater includes the following steps: a, removing impurities: adding soybean meal to the aniline chemical wastewater, standing in the treatment tank for 2 to 5 days, separating the precipitate and liquid; b, filtering and decolorizing: The liquid separated in the step a is passed through a filter layer composed of an activated carbon particle layer and an activated carbon fiber layer; c, oxidation pretreatment: adding 1 to 5% of the waste water volume to the liquid treated in step b, adjusting pH value to 4-5; d. Oxidation treatment: While performing ultrasonic vibration and ultraviolet light on the liquid, add hydrogen peroxide solution with a mass concentration of 35% to 40%, and simultaneously pass in ozone for 20 to 30 minutes. The invention can effectively remove the aniline compounds in the aniline chemical waste water, the removal rate can reach more than 99%, the process is simple, and the treatment period is short.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment method for aniline-containing chemical wastewater. Background technique [0002] Aniline compounds are important organic chemical raw materials and fine chemical intermediates, but also harmful substances that seriously pollute the environment and endanger human health. Many domestic dye factories and chemical factories will produce a large amount of aniline wastewater in the production process, and its mass concentration can sometimes be as high as thousands of mg / L. Due to the toxicity of aniline substances to ecological organisms, strict control is required in industrial wastewater. At present, the compliance rate of aniline pollutants in my country is very low, and the task of treatment is very arduous. However, these high-concentration aniline wastewater is relatively difficult to degrade and has low biodegradability. [0003] At present, the trea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C02F101/38
CPCC02F1/001C02F1/283C02F1/32C02F1/5263C02F1/66C02F1/722C02F1/725C02F1/78C02F9/00C02F2101/38
Inventor 杨福广孙玉亮邵玉凤崔北文崔凤桐付鹏刘小平司灵敏王淑梅牟雷巩新娟刘静艳金娟娟
Owner HEBEI CAIKE CHEM CO LTD