Ultraviolet strong oxygen depth water treatment method and device

Abstract

The invention relates to an ultraviolet strong oxygen depth water treatment method and device. According to the ultraviolet strong oxygen depth water treatment method and device, based on a primary oxidation-state active agent on a nucleophilic interface of electromagnetic excitation, organic pollutants in water are induced to achieve confined electrophilic addition, and active triplet-state freeradicals of the organic pollutants are generated; further, ultraviolet radiation stimulates the intermediate-state oxidation state at the sharp peak of nanocrystalline to generate strong oxidation-state active sites and high active oxygen clusters, the multi-point attack on the active triplet-state free radicals of the pollutants is achieved, and finally, the decomposition and mineralization of the organic pollutants in wastewater can be achieved. The ultraviolet strong oxygen depth water treatment method and device solve the practical problem that the oxidation efficiency is reduced due to the non-ideal water quality, and particularly solve the problem that an AOP technology is inefficient in treatment of high-concentration organic wastewater.

Description

Technical field [0001] The invention relates to the technical field of water treatment in the environmental protection industry, in particular to a deep water treatment device and method based on the ultraviolet strong oxygen action mechanism. Background technique [0002] With the rapid development of industry and agriculture, the types and quantities of sewage and wastewater have increased rapidly, and the pollution to water bodies has become increasingly widespread and serious. The sewage and wastewater often contain a large number of toxic substances, causing potential environmental risks. In order to maintain the health and safety of humans and natural ecology, the treatment of sewage and wastewater is extremely important. At present, physical, chemical, and biological methods are usually used to treat sewage and wastewater to purify the sewage and reduce the degree of pollution, so as to achieve the purpose of recycling and reuse of sewage and wastewater, and make full use ...

AI Technical Summary

Problems solved by technology

[0007] The traditional AOP water treatment technology is based on the oxidation process of hydroxyl radicals, and hydroxyl radicals are a kind of oxidation-reduction ability with strong but short-lived (10 -4 ~10 -9 s) The active oxidant that is easy to quench is limited by the hydrodynamic radius, and its action distance is very limited. Usually, it can only oxidize within the range of 5-20 μm on the surface of the catalyst;

[0008] In the actual high-concentration organic wastewater, in addition to typical pollutants, it also contains a large number of inert or reducing substances (organic or inorganic), these substances can also react with hydroxyl radicals, and the real pollutants can be degraded Hydroxyl free radicals are less than 0.1%, causing a lot of waste of energy or resources;

[0009] In actual sewage and wastewater, there are inevitably non-ideal water quality, such as salinity, turbidity, chroma, viscosity, oil content, etc., which can have a serious impact on the generation efficiency of hydroxyl radicals, such as Cl - , NO 3 - Plasma can inhibit more than 90% of the hydroxyl yield in Fenton and Fenton-like reactions; when the concentration of suspended particulate matter (ss) in water is greater than 20mg / L, the efficiency of UV-H2O2 and UV-O3 will decrease by 42-75%; The passivation effect on the surface of the electrocatalytic electrode can lead to the loss of electrode stability and serious catalyst deactivation;

[0010] At present, the device design of AOP technical engineering application is relatively simple, often using traditional reactor forms, such as tank-shaped, barrel-shaped, and tank-shaped structures, but the above-mentioned devices cannot fully utilize the characteristics of high treatment efficiency and large depth of AOP technology, but inhibit The production and persistence of highly active oxidizing free radical active agents

The AOP technology that combines multiple process sections is mostly used in combination with other advanced oxidation technologies, and it does not form a synergistic effect.

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