Efficient detoxification gradient treatment method for printing and dyeing wastewater based on intelligent SBR electrode process

Abstract

The invention discloses a printing and dyeing wastewater efficient detoxification gradient treatment method based on an intelligent SBR electrode process, wherein efficient open-loop detoxification ofazo dye molecules in printing and dyeing wastewater is achieved through the action of a biological electrode, gradient concentration circulation treatment of the printing and dyeing wastewater in anSBR reactor is achieved through a circulation batch water inlet and outlet mode, and real-time prediction and accurate regulation and control of the SBR reactor are carried out by combining a neural network model to realize intelligent operation. According to the invention, the biological electrode effect, the multi-stage gradient concentration circulation effect of the reactor and the intelligenteffect of the neural network model are combined, so that azo dyes in printing and dyeing wastewater are subjected to intelligent and accelerated detoxification under the efficient effect of anaerobicmicroorganisms, and hydrolysis efficiency optimization and treatment capacity maximization are realized.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and particularly relates to a detoxification treatment method for printing and dyeing wastewater. Background technique [0002] Azo dye wastewater has high chroma, strong toxicity, and is difficult to degrade, and is regarded as one of the wastewaters that needs to be treated urgently. At present, most of the main processes of wastewater treatment systems in most enterprises in my country still use traditional biochemical treatment methods. The toxic organic compounds such as azo and nitro groups contained in dye wastewater are often the main factors that cause the wastewater to be difficult to degrade and have poor biodegradability. Therefore, solving the toxicity problem of dye wastewater is a prerequisite for reaching the discharge standard. [0003] The traditional pretreatment methods of azo dyes such as flocculation precipitation, membrane treatment, adsorption and other methods cannot com...

AI Technical Summary

Problems solved by technology

In actual operation, due to the change of water volume, the change of azo dye concentration, the growth and death of microorganisms, the local dead zone caused by the shape of equipment and hydraulic conditions, etc., the uncertainty of the biological pretreatment of azo dye wastewater is caused. sex

Although the reduction of dead zone and increase of mass transfer can be achieved by SBR reactor and increased agitation, it is difficult to respond to changes in the concentration of azo dyes and microorganisms in a timely manner

[0006]It is worth noting that although a large amount of printing and dyeing wastewater can be treated by using biological methods combined with electrochemical methods, it also requires a lot of infrastructure construction and monitoring equipment, and It takes a long time to debug and test the treatment effect; some processes cannot detect the changes of internal azo molecules in time due to the selection of equipment, and can only meet the start-up of the process by detecting water data combined with the operating experience of the process. The detection of the dye ring-opening detoxification process is less, and it does not have the function of intelligently regulating the operation of the equipment. The monitoring has a lag, and generally requires a lot of manpower and material resources.

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