Processing apparatus of anion-containing dye wastewater

Abstract

The invention discloses a processing apparatus of anion-containing dye wastewater. An opening end is provided on the top of a housing. A housing sidewall below the opening end is provided with a sewage inlet for anion-containing dye wastewater. A first sieve plate is arranged in the housing below the sewage inlet. Limestone particles are laid on the first sieve plate. Aeration heads are well-distributed below the first sieve plate, wherein the aeration heads are extended into the housing from outside the housing. Boiler flue gas is delivered by the aeration heads. A second sieve plate is arranges below the aeration heads. Gibbsite particles are laid on the second sieve plate. An open-ended con-shaped cylinder is arranged below the second sieve plate. The upper larger end of the con-shapedcylinder is connected with the inner wall of the housing. A plurality of water discharging pipes are uniformly arranged at the place where the con-shaped cylinder larger end is connected to the innerwall of the housing. The smaller end of the con-shaped cylinder is connected to the bottom of the housing. The smaller end of the con-shaped cylinder communicates with the outside environment througha sludge discharging port. According to the invention, cheap limestone and gibbsite are adopted as raw materials. The apparatus is simple in structure. With the apparatus, anion-containing dye can beeffectively removed, boiler flue gas can be purified, and environment pollution can be reduced.

Description

technical field [0001] The invention relates to a treatment device for wastewater containing anion dyes, and belongs to the technical field of sewage treatment in environmental protection. Background technique [0002] The textile printing and dyeing industry is a large discharge of industrial wastewater. According to incomplete statistics, the national discharge of printing and dyeing wastewater is 3-4 million tons per day. Wastewater contains a variety of dyes. The wastewater is characterized by high concentration of organic matter, complex components, poor biodegradability, high and changeable chroma, and large changes in water quality and quantity. It is a difficult industrial wastewater to treat. Most of the raw materials input into printing and dyeing production are aromatic compounds and heterocyclic compounds, so that most of the wastewater discharged during the production process is organic matter with aromatic groups such as benzene, naphthalene, anthracene, and qu...

AI Technical Summary

Problems solved by technology

Most of the raw materials input into printing and dyeing production are aromatic compounds and heterocyclic compounds, so that most of the wastewater discharged during the production process is organic matter with aromatic groups such as benzene, naphthalene, anthracene, and quinone as the parent, with chromogenic groups , the color is very dark, with a chroma of 500-500000, which seriously affects the urban landscape

Because dyes are generally biologically toxic, commonly used treatment devices in engineering include adsorption devices, flocculation sedimentation devices, electrolysis devices, and oxidation devices. These devices have the disadvantages of high cost and short timeliness.

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