Novel treatment method of high-salt organic pigment production wastewater

Abstract

The invention discloses a high-salt organic pigment production wastewater treatment method, which includes the following steps: conveying high-salt organic pigment wastewater to a regulating tank through a pipeline, and fully and uniformly mixing the wastewater; and entering, by an effluent, from the regulating tank into an electro-catalytic oxidation system through the action of a pump, entering,by the effluent, from the electro-catalytic oxidation system into a hydrolytic acidification system, adsorbing, condensing and degrading organic matters in a water body by a cultured domesticated bio-film and bottom sludge, sinking, by insoluble matters in the water, to the bottom, flowing, by a supernatant fluid, out after being collected by a top water collecting groove, entering, by the effluent, from the hydrolytic acidification system into a CMBR system through the action of the pump, and reacting the hydrolyzed acidified wastewater through a bio-reactor, wherein the organic matters areoxidized and decomposed under the action of high-concentration mixed activated sludge to complete wastewater treatment. Compared with the prior art, the electro-catalytic oxidation system has higher efficiency and can remove most harmful substances in most wastewater to a certain extent, so that the toxicity of the wastewater is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a novel treatment process for high-salt organic pigment production wastewater. Background technique [0002] Pigment production wastewater is mainly produced in the two processes of pressure filtration and rinsing after the diazotization reaction and coupling reaction. The waste water produced by press filtration is generally called waste mother liquor, and its main components are lost azo pigments, production raw materials and by-products in the production process; the amount of low-concentration wastewater such as filtered water and flushing water generated in the rinsing process is the amount of waste mother liquor About 3 to 4 times of that. Therefore, azo pigment wastewater has the following characteristics: [0003] (1) COD Cr High, some as high as hundreds of thousands mg / L, stable in nature, or even completely non-degradable. [0004] (2) The chromaticity is h...

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Problems solved by technology

[0003] (1) COD Cr High, some as high as hundreds of thousands mg / L, stable in nature, even completely non-degradable

[0004] (2) The chroma is high, from 500 to 500,000 times, and some wastewater is bright and opaque

[0006] (4) The production process of pigments has many varieties and varieties, and the output is small, so the quality and quantity of drainage water have a greater impact with the change of pigment production

[0011] It can be seen from the above table that each method has its specific advantages and disadvantages, and it is difficult to treat pigment wastewater to an ideal state if any method is used alone

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