What is advanced oxidation technology for industrial wastewater treatment

The development of modern industry has led to a sharp increase in both the quantity and types of organic matter entering water bodies, resulting in severe water pollution. Wastewater rich in organic matter may contain a large amount of toxic, harmful, and refractory pollutants, which are causing increasingly serious environmental problems and greatly restricting the development of the chemical industry and related industries. Traditional separation and conversion technologies are inefficient in treating refractory and toxic organic pollutants. Therefore, seeking more effective new technologies is particularly important for sustainable development.
The advanced oxidation processes mainly include Fenton and Fenton-like oxidation methods, ozone advanced oxidation processes, electrochemical oxidation methods, ultrasonic advanced oxidation processes, wet oxidation processes, photochemical oxidation processes, and photochemical catalytic oxidation processes. Advanced oxidation technologies are primarily applied to remove refractory COD. Due to their ability to degrade organics that cannot be degraded by biochemical treatment, and to treat wastewater with high salt concentration and containing toxic and harmful substances, these technologies are applied to various industrial wastewaters, mainly in coking wastewater, printing and dyeing wastewater, coal chemical wastewater, petrochemical wastewater, landfill leachate, and other industrial wastewaters.
It is primarily applied in the following aspects of the aforementioned wastewater systems: at the front end of biological treatment, it degrades toxic and harmful substances, enhances biodegradability, and reduces the volumetric load of subsequent processes. At the end of wastewater treatment, it degrades refractory COD that cannot be treated by biochemical processes, ensuring that the wastewater meets emission standards;
The front end of membrane treatment for reclaimed water reuse involves a COD removal protective membrane device; the removal of COD in RO concentrated brine involves a protective membrane concentration device