Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis

A technology of chemical recovery and organic acid, applied in flocculation/sedimentation water/sewage treatment, carboxylate preparation, etc., can solve the problems of low treatment efficiency, heavy burden of biochemical treatment, waste of resources, etc., to improve treatment efficiency and reduce biochemical Dealing with Burden Effects

Inactive Publication Date: 2014-02-19
罗代洪 +2
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  • Abstract
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  • Claims
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Problems solved by technology

There are defects such as heavy burden of biochemical treatment, low treatment efficiency, waste of resources, etc.

Method used

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  • Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis
  • Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis
  • Chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 80 kg of extractant to 4 tons of organic acid waste water, start the mixer, react for 20 minutes, precipitate and filter. Detect filtrate COD. The raw water COD is 1140.7mg / L, the COD after treatment is 296.3mg / L, and the removal rate is 74%. The filter residue was analyzed by acid, precipitated and filtered to obtain 63kg of organic acid. Add 100kg of regeneration agent to the acid analysis filtrate to regenerate the extraction agent.

Embodiment 2

[0032] Add 230 kg of extractant to 4 tons of waste water from chemical feed bath, start the mixer, react for 20 minutes, precipitate and filter. Detect filtrate COD. Raw water COD is 2.32×10 4 mg / L, COD after treatment is 1.37×10 3 mg / L, the removal rate is 94%. Add 300kg of regeneration agent to the filter residue, recover the extractant, add acid to the filtrate for acid analysis, precipitate and filter to obtain 172kg of organic acid.

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PUM

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Abstract

The invention relates to a chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis and belongs to the fields of chemistry, environmental engineering and industrial wastewater treatment. The technical problem to be solved is to recover organic acid in the wastewater by using an extraction solvent as a raw material. Main points of the technical scheme are as below: adding the extraction solvent, separating reaction precipitates, and conducting regeneration, washing and acid precipitation on the extraction solvent, so as to recover organic acid; and carrying out biochemical treatment on the wastewater after recycling, so that the COD of the wastewater can meet the national discharge standard. Compared with the prior art, the chemical recycling method for treating organic acid in wastewater from electrode foil chemical synthesis provided by the invention has the characteristics of recovery of resources, reduction in the biochemical treatment burden and improvement of treatment efficiency, and can realize the large-scale treatment. Therefore, the method for treating organic acid in wastewater from electrode foil chemical synthesis is simple, efficient, energy-saving and environment-friendly, and reaches comprehensive utilization of resources.

Description

technical field [0001] The invention relates to a method for chemically recovering and treating organic acids in waste water formed from electrode foils. It belongs to the field of chemical and environmental engineering and industrial sewage treatment. Background technique [0002] A method for chemically recovering and treating the organic acids in the waste water formed by electrode foils uses an extractant as a raw material to recover and treat the organic acids in the waste water formed by chemical methods. Used in water treatment and environmental governance. [0003] From the perspective of production technology, the existing treatment method for organic acids in chemical wastewater is biochemical treatment. There are defects such as heavy burden of biochemical treatment, low treatment efficiency and waste of resources. Contents of the invention [0004] The purpose of the present invention is to provide a method for chemically recovering and treating the organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C07C51/02
Inventor 罗代洪罗凯李征真
Owner 罗代洪
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