A kind of 1-aminoanthraquinone wastewater physicochemical and biochemical treatment process

Abstract

The invention discloses a physicochemical and biochemical treatment process for 1-aminoanthraquinone production wastewater. The nitrification acid water, nitrification neutralization water and reduction mother liquor produced in the production process of 1-aminoanthraquinone are separately collected and pretreated. The nitrification acid water pretreatment method is macroporous resin adsorption + lime neutralization + press filter dehydration, nitrification The pretreatment method of neutralization water is flocculation sedimentation + activated carbon filtration, and the pretreatment method of reduction mother liquor is evaporation treatment; the reduction washing water discharged from the workshop is discharged together with the pretreated nitrification acid water, nitrification neutralization water, and reduction mother liquor evaporation condensate To the waste water collection pool for storage, the ground flushing water and domestic sewage in the factory area are discharged to the low-concentration waste water pool for storage; the high-concentration production waste water in the collection pool and the low-concentration waste water in the low-concentration waste water pool are pumped in proportion to the adjustment tank for homogenization and dosing according to the deployment needs All kinds of nutrients required for biochemical treatment; the homogenized wastewater is treated in turn through coagulation sedimentation tank, hydrolysis acidification tank, multi-stage A / O tank, intermediate sedimentation tank, decolorization reaction tank, flocculation sedimentation tank, and the treated water can reach << Integrated Sewage Discharge Standard (GB8978-1996) Level 1 standard.

Description

technical field [0001] The invention relates to a waste water treatment process, which directly relates to the 1-aminoanthraquinone production waste water treatment process, especially for treating high-salt, high-COD, high-nitrogen, refractory aminoanthraquinone waste water. technical background [0002] 1-Aminoanthraquinone is an important dye intermediate, which is widely used in anthraquinone dyes, medicine and other fields. 1-Aminoanthraquinone production wastewater has the characteristics of high salt, high COD, high nitrogen and refractory biodegradation, and it is difficult to effectively remove the organic pollutants in it by conventional techniques and processes. [0003] During the production of 1-aminoanthraquinone, four kinds of wastewater will be discharged, namely nitrification acid water, nitrification neutralization water, reduction mother liquor and reduction washing water. Nitrification acid water is acidic, containing a large amount of nitrate, anthraqui...

AI Technical Summary

Problems solved by technology

[0004]The wastewater has a single nutrient structure, and the wastewater contains substances such as sulfate, nitrate, sulfide and sulfite, which are easy to inhibit the activated sludge. In the treatment system, there are often problems such as a sharp drop in the pH of the biochemical system and a sharp drop in biomass, which seriously affect the normal operation of the system

[0005]In view of the difficulty in the treatment of this wastewater, it is urgent to seek a wastewater treatment technology with reliable technology, stable operation, and effluent water quality to solve the environmental protection problems that restrict the development of this industry

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