With the continuous development of the printing and dyeing industry, the discharge of dye industrial wastewater has increased dramatically, and dye wastewater has gradually become a factor that harms the ecological environment and human health. The composition of dye wastewater is complex. These organic molecules have the characteristics of high concentration, many difficult-to-degrade substances, high chroma, high toxicity and large water quality changes. They are difficult to degrade wastewater, and traditional treatment methods are not ideal. Therefore, how to decolorize dye wastewater is an important issue in the process of treating printing and dyeing wastewater.
Textile printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, high alkalinity, and large water quality changes. It is one of the difficult-to-treat industrial wastewaters. The wastewater contains dyes, slurries, additives, oils, acids and alkalis, fiber impurities, sand substances, inorganic salts, etc. The main methods used for the treatment of printing and dyeing wastewater include physical and chemical methods, biochemical methods, chemical methods and methods combining several processes. The pretreatment in wastewater treatment is mainly to improve the quality of wastewater, remove suspended matter and impurities that can be directly settled, adjust the quality and amount of wastewater, reduce the temperature of wastewater, etc., improve the overall effect of wastewater treatment, and ensure the stability of the entire treatment system. Therefore, pretreatment plays an extremely important role in the treatment of printing and dyeing wastewater. At present, the treatment methods for dye wastewater mainly include biological treatment, electrochemical method and flocculation method. Among them, although biological treatment and electrochemical method have good decolorization effect, they have the characteristics of low COD removal rate, high cost and secondary pollution, which seriously hinder the promotion and application of dye wastewater treatment technology. The flocculation method generally adds dye wastewater decolorizer, which is widely used because of its advantages such as simple operation, economic applicability and obvious effect. The flocculation method is to add certain substances to the wastewater, such as dye wastewater decolorizer. The principle is to use physical or chemical effects to aggregate pollutants that were originally dissolved in wastewater or in a finely suspended state, not easy to settle (or float), and filter into larger particles so that they can be separated from water, thereby separating and removing the chromogenic substances accumulated in the wastewater.
Dye wastewater decolorizer is an organic high molecular weight composite polymer, which belongs to the flocculation decolorization water treatment agent. It has a wide range of treatment and decolorization, can effectively reduce COD, and does not affect the biochemical system. Reduce other pollutants in the water body, reduce the chromaticity of sewage, improve the effluent water quality, and the chromaticity of the treated dye wastewater can meet the national emission standards without secondary pollution.
A 10,000 square meter water treatment filler production workshop
A 4,000 square meter large open laboratory
A 20,000 square meter high-end environmental protection equipment manufacturing workshop
Over 30 production-oriented experimental bases
Over 40 pilot-scale systems
Over 50 small-scale experimental devices
Over 60 large-scale instruments and equipment
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