Nanofiltration brine is an industrial wastewater with high COD (Chemical Oxygen Demand) content, which poses a potential pollution risk to the environment. In order to solve the problem of COD in nanofiltration brine treatment, researchers have conducted technical research on advanced oxidation methods. In this paper, the research progress of advanced oxidation method in the degradation of COD in nanofiltration concentrated water will be discussed.
Advanced oxidation is a technology that uses highly reactive oxygen radicals for the oxidative degradation of organic matter. In nanofiltration brine treatment, researchers used advanced oxidation to degrade COD to meet wastewater discharge standards.
Studies have shown that the advanced oxidation method can effectively reduce the COD content in nanofiltration concentrated water. Commonly used advanced oxidants include hydrogen peroxide (H2O2), ozone (O3), and high-energy ultraviolet light. These advanced oxidants are capable of producing highly reactive oxygen radicals, which undergo a strong oxidation reaction on organic matter and convert organic matter into harmless substances.
In the experiment, the researchers used advanced oxidation methods such as hydrogen peroxide and ultraviolet light, ozone, and a combination of ultraviolet light, hydrogen peroxide and ozone to carry out COD degradation experiments in nanofiltration concentrated water. The experimental results show that the advanced oxidation method has a significant effect on the degradation effect of different types of nanofiltration concentrated water COD. The right amount of advanced oxidants and the right conditions can improve the degradation effect.
In addition, the researchers also studied the effects of the operating parameters of the advanced oxidation method on the degradation effect of COD, such as the concentration of advanced oxidants, reaction time, pH value, etc. The experimental results show that within a certain range, the appropriate concentration of advanced oxidant and the long reaction time can significantly improve the degradation effect of COD. In addition, the regulation of pH value can affect the progress of the oxidation reaction, so proper regulation is required.
Advanced oxidation has many advantages in degrading COD in nanofiltration concentrates. First of all, the advanced oxidation method does not need to add chemical reagents, which can avoid the generation of secondary pollution. Secondly, the advanced oxidation method also has a good treatment effect on refractory organic matter, and can degrade various types of organic matter. In addition, the technology is simple to operate and low in cost, making it suitable for the treatment of industrial nanofiltration of concentrated water.
Therefore, the advanced oxidation method has high application potential in the degradation of COD in nanofiltration concentrates. By optimizing the process parameters and appropriately adjusting the concentration, reaction time, pH value and other conditions of advanced oxidants, the COD content in the nanofiltration concentrated water can be effectively reduced and the wastewater discharge standard can be met. However, further in-depth research and practice are still needed to promote the development of this technology in practical application and the expansion of its application scope.
Water Companion: A one-stop solution for water treatment agent optimization.