A method for treating organic wastewater containing copper ammonia complexes by using activated special cast iron materials

A technology of copper ammonia complex and organic waste water, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of not removing copper ammonia complex, etc. The effect of small footprint, short process route and simple operation

Active Publication Date: 2018-05-01
NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problem that there is no effective method for removing copper-ammonia complexes in organic wastewater in the prior art, the present invention proposes a method for treating organic wastewater containing copper-ammonia complexes by using activated special cast iron materials

Method used

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  • A method for treating organic wastewater containing copper ammonia complexes by using activated special cast iron materials
  • A method for treating organic wastewater containing copper ammonia complexes by using activated special cast iron materials
  • A method for treating organic wastewater containing copper ammonia complexes by using activated special cast iron materials

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Embodiment 1

[0032] Copper-containing purple waste water discharged from a chemical plant producing reactive brilliant blue KN-R in Zhejiang. The parameters of the mother liquor wastewater used are as follows: water temperature 10-30°C, pH value 3.8, COD Cr The value is about 3931mg / L, of which the copper ion is about 1895mg / L. combined with figure 1 , the present embodiment proposes a method for utilizing activated special cast iron material to treat copper ammonia complex organic wastewater, the steps are as follows:

[0033] A method for treating organic waste water containing copper ammonia complexes by activating special cast iron materials, comprising the steps of:

[0034] A, first adjust the pH of the waste water containing copper ammonium complex to 3.5; the acid to adjust the pH of the organic waste water containing copper ammonium complex is 37% concentrated hydrochloric acid in mass fraction, the acidification effect is the best, and the subsequent activation of special cast ...

Embodiment 2

[0044] In order to remove the copper-containing depurple waste water discharged from a chemical plant producing reactive brilliant blue KN-R in a chemical company in Lianyungang, Jiangsu, this example proposes a method for treating organic waste water containing copper ammonia complexes by using activated special cast iron materials , its method step is the same as embodiment 1. Wherein, the use of mass fraction in step A is 98% concentrated sulfuric acid to adjust the pH to 2.5, the dosage of activated special cast iron material in step B is 1.0% of the waste water quality, the particle size is 100 mesh, the mass number of iron is 60, carbon The mass fraction of 30, the mass fraction of copper 15, the stirring speed is 100rpm, and the reaction time is 90min, and the mass fraction in step C is that the dosage of 30% hydrogen peroxide is 1.0%, air stirring, and the reaction time is 120min, the step D is neutralized to a pH of 9. See Table 2 for the effects before and after the ...

Embodiment 3

[0049] In order to remove complexed copper in the depurple waste water produced by a certain chemical enterprise in Anhui, this embodiment proposes a method for treating organic waste water containing copper ammonium complexes by using activated special cast iron materials. The method steps are the same as in Embodiment 1. Wherein, the use of mass fraction in step A is 98% concentrated sulfuric acid to adjust the pH to 4.0, the dosage of activated special cast iron material in step B is 1.5% of the waste water quality, the particle size is 50 mesh, the mass fraction of iron is 58, carbon The mass fraction of 27, the mass fraction of copper 13, the stirring speed is 80rpm, and the reaction time is 30min, and the mass fraction in step C is that the dosage of 30% hydrogen peroxide is 1.5%, air stirring, and the reaction time is 180min, the step D is neutralized to a pH of 10. See Table 3 for the effects before and after the treatment of the purple by-product wastewater in this emb...

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Abstract

The invention discloses a method for treating organic wastewater containing copper ammonium complexes by using activated special cast iron materials, and belongs to the technical field of chemical wastewater treatment. The steps are as follows: A. Adjust the pH of the waste water containing copper ammonium complex to 2.0-4.0; B. Add activated special cast iron materials to the organic waste water containing copper ammonium complex. 0.2-1.5% of the mass, stirring, and the reaction time is 30-120min; C. Continue to add 30% hydrogen peroxide with a mass fraction of 30% hydrogen peroxide to the effluent after the reaction in step B, and the dosage is 0.2-1.5% of the waste water volume, air Stirring, the reaction time is 60-180min; D, add a mass fraction of 30% liquid caustic soda, neutralize until the pH is 7-10, after precipitation, discharge the effluent. It realizes the effective removal of copper ions in the organic wastewater containing copper ammonium complex, and at the same time greatly reduces the CODCr in the mother liquor wastewater.

Description

technical field [0001] The patent of the invention relates to the technical field of chemical wastewater treatment, and more specifically relates to a method for treating organic wastewater containing copper ammonia complexes by using activated special cast iron materials. Background technique [0002] When chemical companies produce reactive brilliant blue KN-R, they first use amino oil and bromonic acid in the presence of cuprous chloride as a catalyst to carry out condensation reaction, press filter, wash with dilute sulfuric acid, and discharge a large amount of purple waste water, of which the main Contains amino oil, bromine, copper sulfate, sulfuric acid, etc. After testing, wastewater COD Cr The copper ion content is about 4000mg / L, and the copper ion content is about 2200mg / L. The copper ion content in the wastewater is relatively high. If it is not treated, the direct discharge will definitely cause damage to the environment. When a large amount of copper and hea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06C02F101/20
Inventor 卞为林戴建军
Owner NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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