Device and method for physical chemical treatment of reactive dye waste water

Abstract

The invention belongs to the technical field of sewage treatment and relates to a device and method for physical chemical treatment of reactive dye waste water. A coagulant and an oxidizing agent are injected into a water inlet pipe respectively through a coagulant feeding pump and an oxidizing agent feeding pump; a mixed solution obtained after the waste water, the coagulant and the oxidizing agent are fully mixed in a water inlet pump enters a membrane coagulation reactor; the mixed solution first undergoes coagulation under the effect of a mixer, the waste water having undergone coagulation further undergoes flocculation under the aeration effect of a micropore aerator, the mixed solution having undergone flocculation is filtered through a membrane module to obtain clear outlet water, the clear outlet water is discharged through a water outlet pipe to be recycled, silt obtained after the flocculation enters a dredge pipe to be discharged, and the physical chemical treatment of the reactive dye waste water is achieved. The whole process is simple and flexible to operate and control, the decoloration of the waste water can be achieved, and the device and method for physical chemical treatment of the reactive dye waste water save energy and are low in production cost, good in economic benefit and convenient to popularize and apply.

Description

Technical field: [0001] The invention belongs to the technical field of sewage treatment, and relates to a treatment equipment and process for reactive dye wastewater, in particular to a novel physical and chemical treatment device and method for reactive dye wastewater. Background technique: [0002] The textile industry is one of the largest water-consuming industries in the world. It produces a huge amount of wastewater, and has the characteristics of complex water quality components and large fluctuations. If it is not treated effectively, it will greatly harm the environment. Dyes are the most important pollutants. At present, about 10,000 kinds of dyes are produced and used in the world every year. Among them, reactive dyes are widely used because of their bright color, fast dyeing, and easy application. However, reactive dyes will give water The environment brings serious chromaticity problems, and its concentration of 0.005mg / L will make the water body colored. There...

AI Technical Summary

Problems solved by technology

However, due to the good stability of reactive dyes to light, heat and some oxidants, it is difficult to effectively remove them by traditional wastewater treatment technology

In addition, most reactive dyes have poor biodegradability and are difficult to remove by biological treatment methods, so it is necessary to develop a set of technically and economically feasible reactive dye wastewater treatment technologies

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