Water treatment composite agent and water treatment method for removing organic pollutants by oxidation with highly active singlet oxygen

Abstract

The invention discloses a water treatment compound agent for removing organic pollutants in an oxidation mode with high-activity singlet oxygen and a water treatment method of the water treatment compound agent, and relates to water treatment agents and methods for removing pollution in oxidation modes. The problems that when the singlet oxygen is produced through a photosensitization method, a light source needs to be added, secondary pollution is generated, and the use efficiency of the singlet oxygen in a chemical method is low are solved. The water treatment compound agent is composed of bleaching powder, inorganic solid peroxide and powdered activated carbon, and the mass ratio of the bleaching powder to the inorganic solid peroxide to the powdered activated carbon is (1-10):1(1-10). According to the water treatment compound agent, hypochlorite ions provided by the bleaching powder reacts with hydrogen peroxide slowly released after the peroxide is dissolved in water to generate the high-activity singlet oxygen, and through a micro-interface provided by the powdered activated carbon, the self-decomposition of the singlet oxygen can be restrained, the survival time of the singlet oxygen can be prolonged, and the use ratio of the singlet oxygen is improved. The water treatment compound agent is high in efficiency of removing the organic pollutants in the oxidation mode, cannot generate poisonous and harmful by-products, and is convenient to transport and store and more suitable for emergency treatment.

Description

technical field [0001] The invention relates to a water treatment agent for oxidation and decontamination and a water treatment method thereof. Background technique [0002] In recent years, the impact of reactive oxygen species on human health has received great attention. Active oxygen is some intermediate metabolites or oxygen-containing derivatives of oxygen, which have stronger oxidizing ability than oxygen. The main types of active oxygen are: superoxide radicals (O 2 - ), hydrogen peroxide (H 2 o 2 ), hydroxyl radicals (·OH), singlet oxygen ( 1 o 2 )Wait. Oxygen usually breathed is a stable ground state oxygen molecule, also known as triplet oxygen ( 3 o 2 ), while singlet oxygen ( 1 o 2 ) is different. It is an existence form of oxygen molecules in an excited state. Its chemical properties are more active and more unstable than the ground state. It exists widely in nature and is the longest active in the fields of chemistry, environment, and medicine. Oxy...

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Problems solved by technology

[0010] The purpose of the present invention is to provide a water treatment compound agent and a water treatment method thereof that utilize highly active singlet oxygen to oxidize and remove organic pollutants, and solve the following problems: (1) the generation of singlet oxygen in the photosensitization method requires a stable light source, which is difficult to Large-scale application, and the addition of photosensitive reagents will produce secondary pollution; (2) traditional chemical reaction method (H 2 o 2 -ClO - The singlet oxygen produced in ) is easy to self-decompose, the survival time is short, and it is difficult to be efficiently utilized by pollutants, and the liquid hydrogen peroxide and hypochlorous acid solution or chlorine gas is inconvenient to transport and store, and the operation is complicated and there are safety hazards

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