The application of visible photocatalytic reactors in wastewater treatment, with the intensification of environmental pollution problems, traditional wastewater treatment methods are becoming increasingly difficult to meet the requirements of modern society for high efficiency, economy, and sustainability of wastewater treatment. As a new type of environmental protection technology, it is receiving increasing attention due to its potential in wastewater treatment.

　　Visible photocatalytic reactorThe application in wastewater treatment includes the following aspects:

1、 Removing organic pollutants

Organic pollutants are common and difficult to treat components in wastewater. Traditional physical and chemical methods, such as adsorption, precipitation, membrane separation, etc., although able to remove organic matter to a certain extent, are difficult to decompose its chemical structure. It can convert organic pollutants into harmless substances such as water and carbon dioxide through photocatalysis. The reactor using semiconductor materials such as titanium oxide can efficiently degrade complex organic compounds such as benzene, phenols, pesticide residues, etc., achieving the goal of purifying water quality.

2、 Removing heavy metal ions

Heavy metal ions such as lead, mercury, cadmium, etc. exist in industrial wastewater for a long time and are often difficult to remove by traditional physical methods. Heavy metal ions in water can also be reduced to insoluble forms through reduction reactions under the action of catalysts, thereby removing them. This technology not only improves removal efficiency, but also has good economy and adaptability, especially when treating composite wastewater containing multiple pollutants, the effect is very good.

3、 Antibacterial disinfection

The oxidation process of visible photocatalytic reactor can not only remove harmful substances, but also kill pathogenic bacteria, viruses and other microorganisms in water. The strong oxidative free radicals generated by photocatalysis can effectively destroy bacterial cell membranes, inhibit viral activity, and achieve water disinfection. Compared with traditional chemical disinfection methods such as chlorine disinfection, photocatalytic disinfection is more environmentally friendly, produces no harmful by-products, and avoids secondary pollution of the environment by chemicals.

4、 Degradation of recalcitrant substances in industrial wastewater

Many industrial wastewater contains toxic and harmful substances that are difficult to degrade, such as petrochemical wastewater, pharmaceutical wastewater, etc. It can also efficiently degrade these difficult to degrade substances, especially maintaining high treatment efficiency under low temperature and atmospheric pressure conditions. With the continuous optimization and improvement of catalyst materials, the applicability of this technology is becoming wider and wider.

5、 Energy conservation and environmental protection

One prominent advantage is the low energy consumption of its light source. Under visible light irradiation, catalysts can efficiently stimulate reactions and catalyze the degradation of pollutants, requiring almost no additional energy consumption. This makes visible photocatalytic technology an energy-saving and environmentally friendly wastewater treatment method, especially suitable for areas with energy shortages or insufficient power supply.

Overall, although the application of visible photocatalytic reactors in wastewater treatment is still in a continuous development stage, they are expected to become an important technological means in the field of wastewater treatment in the future due to their environmental protection, high efficiency, and low energy consumption characteristics.