In the industrial production processes of textiles, dyeing, printing, and other industries, a large amount of waste water is produced, with dyeing and printing waste water accounting for a considerable proportion of it. These waste waters contain a large amount of dyes, additives, pastes, and other substances, and organic matter is difficult to decompose and disappear in the natural environment, easily forming colored bodies, soluble organic compounds, and harmful chemicals. If the waste water is not properly treated and discharged directly into the natural environment, it will cause long-term pollution to groundwater, soil, and other environments.
In order to effectively treat dyeing and printing waste water, there are generally physical methods such as adsorption and precipitation to remove impurities and harmful substances from the waste water; and dyeing and printing waste water decolorizer is a chemical agent specially used to treat the color, organic matter, and suspended solids in dyeing and printing waste water. The main function is to remove or convert the dyes and organic substances in the waste water into harmless or low-harm substances through chemical reactions, so as to reduce the color and organic matter content of the waste water.
The methods of using dyeing and printing waste water decolorizer include adding, stirring, and precipitation steps. First, the decolorizer is added to the waste water in a certain proportion, and then the decolorizer is fully mixed with the waste water through stirring, so that the adsorbents and oxidants in the decolorizer react chemically with the dyes and organic substances in the waste water. Subsequently, solid particles and decolorizer residues in the treated waste water are removed through precipitation and other physical methods, ultimately obtaining clear water after decolorization.
The benefits of using dyeing and printing waste water decolorizer are that it can effectively reduce the color and organic matter content of the waste water, enabling the waste water to meet national discharge standards while reducing environmental pollution. With the continuous increase of environmental awareness and the increasingly stringent environmental regulations, the application of dyeing and printing waste water decolorizer will become more and more widespread.
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