What are methods of Organic Glass Wastewater Decolorization?
Decolorization of organic glass wastewater often involves wastewater produced during processing, cleaning, or manufacturing, often containing dyes, organic solvents, metal ions, or other pollutants, causing the wastewater to appear in color. A variety of physical, chemical and biological treatment techniques can be used for decolorizing organic glass wastewater. Here are some common treatment methods:
1. Precipitation method:
The use of chemical agents and dyes in wastewater reaction to form sediment, so as to remove color, such as high molecular quaternary ammonium salt cation decoloring agent, dicyandiamide resin, etc. They are usually combined with coagulants (such as polymerized aluminum sulfate, polyaluminum chloride, polyacrylamide, etc.) to condense the suspended matter and dissolved organic matter in the wastewater and form flocculent, which will be separated from the wastewater through precipitation or filtration.
2. Adsorption method:
Including sand filter, activated carbon filter and other physical filtration methods, used to remove suspended particles and some pigment in wastewater. Activated carbon often has a huge specific surface area and strong adsorption capacity, which can effectively adsorb pigment and other organic pollutants in wastewater.
3. Advanced Oxidation process (AOPs):
Including Fenton reagent oxidation, photocatalytic oxidation, wet oxidation, ozone oxidation, electrochemical oxidation, etc., these technologies through the oxidation of organic matter in wastewater, destroy dye molecules, to achieve the purpose of decolorization. This method can also improve the biodegradability of the wastewater.
4. Biological treatment method:
Using the metabolic activities of microorganisms to degrade the organic matter in wastewater, certain specific bacteria have a good degradation ability of dyes, which can achieve decolorization.
5. Membrane separation technology:
Such as RO, NF, UF and other membrane technologies, can intercept the pigment and other small molecule organic matter in the wastewater, to achieve decolorization.
When choosing appropriate wastewater decolorization method, it is necessary to consider the characteristics of the wastewater, the types of pollutants to be treated, the treatment efficiency, the operation cost and whether secondary pollution will occur. In industrial applications, combined processes are often used to improve the decolorization effect and economic benefits.
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