With the continuous development of global economy, environmental problems have gradually attracted people's attention. As a part of the environmental protection industry, the printing and dyeing wastewater zero discharge system has become one of the important equipment of modern printing and dyeing enterprises. This article will introduce the printing and dyeing wastewater zero discharge system, let everyone better understand its importance in the environmental protection industry.

Printing and dyeing wastewater refers to the wastewater produced in the process of printing and dyeing industry containing dyes, auxiliaries, fibers, slurry and other impurities. Because it contains a large number of toxic and harmful substances, the discharge will not only cause pollution to the environment, but also do great harm to human health. Therefore, printing and dyeing wastewater discharge has always been the focus of environmental protection work.

Due to the particularity and complexity of printing and dyeing wastewater, the general sewage treatment methods are difficult to treat these wastewater. Therefore, printing and dyeing wastewater zero discharge system came into being. Printing and dyeing wastewater zero discharge system is an efficient, economical and environmentally friendly treatment equipment, which can decompose and remove harmful substances in printing and dyeing wastewater to achieve the purpose of zero discharge.

The zero discharge system of printing and dyeing wastewater is usually composed of four parts: pretreatment, biochemical treatment, advanced treatment and terminal treatment. Among them, the pretreatment part is mainly the preliminary treatment of raw water, including the regulation of water quality, solid-liquid separation, removal of large particles and other processes. The biochemical treatment part is to decompose and remove organic matter through the action of biological flora. The advanced treatment part is the use of reverse osmosis, adsorption, electrodialysis and other technologies, the trace organic matter and inorganic matter in the water for in-depth treatment. The terminal treatment part is to filter and disinfect the treated water again, and finally reach the standard of direct discharge.

Printing and dyeing wastewater zero discharge system has an irreplaceable position in the environmental protection industry. First of all, it can remove harmful substances in wastewater and achieve the purpose of zero discharge. Secondly, the technology and process it uses are scientifically verified and can achieve the purpose of high efficiency, economy and environmental protection. In the end, the zero discharge system of printing and dyeing wastewater plays a very important role in the landing of printing and dyeing enterprises, which can help enterprises achieve better results in environmental protection, improve product quality and establish a corporate image.

In short, the printing and dyeing wastewater zero discharge system has become an indispensable part of the environmental protection industry, its efficient, economic and environmental protection characteristics, so that it plays an increasingly important role in the future environmental protection work. It is believed that with the development of science and technology, the zero-discharge system of printing and dyeing wastewater will become more and more perfect and make greater contributions to the cause of global environmental protection.