The treatment of wastewater generated during the production process of Polyester staple fiber equipment is an important environmental protection link. The following are some methods to effectively treat Polyester staple fiber equipment production wastewater:
First, the choice of wastewater treatment process is crucial. According to the characteristics of polyester staple fiber wastewater, a combination of physical, chemical and biological treatment methods are usually used. Physical treatment mainly includes steps such as grid interception, sedimentation and filtration to remove suspended solids and particulate matter in wastewater. Chemical treatment involves adding chemical agents, such as demulsifiers, flocculants, etc., to chemically react pollutants in wastewater to form precipitates or substances that are easy to separate. Biological treatment uses the metabolism of microorganisms to convert organic pollutants in wastewater into harmless substances.
During the specific implementation process, the wastewater will first be intercepted by the grille to remove larger contaminants and floating oil. Then, the wastewater enters the regulating tank for homogenization and equalization treatment to reduce water quality fluctuations. Next, the wastewater will be lifted into the coagulation tank, and chemicals such as sodium hydroxide, PAC and PAM will be added to perform a flocculation reaction, so that the fine suspended solids in the water will form sediments. The wastewater then enters the coagulation and air flotation device to further remove fine suspended solids and some organic pollutants through air flotation.
In addition, specific treatment methods can be used for oils in wastewater, such as DTY oils. For example, in the demulsification reaction tank, by adding demulsifier and PAC, and stirring with air, the oil in the wastewater undergoes a demulsification reaction and forms a substance that is easy to separate. Then, the wastewater enters the air flotation tank, where flocculant is added, and alum flowers are formed after air stirring. The suspended matter in the water is then removed by dissolved air flotation.
In the wastewater treatment process, you also need to pay attention to the treatment of sludge. The air flotation sludge will enter the sludge tank for storage. After being pressurized by the screw pump and filtered by the filter press, the mud cake will be transported to the solid waste center for processing.
Finally, in order to ensure that the wastewater treatment effect meets national and local standards, companies need to adopt efficient, energy-saving and environmentally friendly sludge treatment processes, and regularly inspect and maintain wastewater treatment equipment. At the same time, enterprises should also pay attention to the innovation and development of wastewater treatment technology and continuously improve the efficiency and quality of wastewater treatment.
