Water treatment method for oxidative degradation of organic pollutants by catalyzing monopersulfate through manganese sand

Abstract

The invention discloses a water treatment method for oxidative degradation of organic pollutants by catalyzing monopersulfate through manganese sand, and relates to a water treatment method which solves the problems that an existing pre-oxidizing agent is poor in oxidizing ability, poisonous and harmful byproducts are liable to generate, the existing pre-oxidizing agent is inconvenient to use andoperate, and operation investment cost is high. The water treatment method comprises the following steps: adding the monopersulfate into to-be-treated water, introducing water into a filter bed with manganese sand to filter, catalyzing the monopersulfate by manganese sand to generate a sulfate radical free group to oxidize and degrade organic pollutants in water, thereby completing oxidative removal on organic substances. The monopersulfate is stable in chemical property, is convenient to transport and store, and is normally listed as a drinking water disinfector product summary in China; andthe water treatment method is simple to operate, does not need to additionally arrange equipment, does not change the original treatment process of the water feeding plant, can be applied on a large scale; and the monopersulfate is catalyzed by the manganese sand, so that the organic substance removal efficiency is high; and moreover, residual monopersulfate further can be used for sterilizing filtered water as a disinfector, so that poisonous and harmful byproducts are not generated.

Description

technical field [0001] The invention relates to the field of drinking water treatment, in particular to a method for removing organic pollutants in drinking water. Background technique [0002] With the growth of population and the continuous expansion of industrial scale, the massive discharge of domestic sewage and industrial wastewater leads to the entry of toxic and harmful substances and pollutants (such as pesticides, endocrine disruptors, personal care products, drugs, etc.) Pollution and deteriorating water quality pose a huge threat to people's life and production, and also pose great challenges to conventional drinking water treatment processes. For this reason, my country fully implemented the new version of "Drinking Water Hygienic Standards" (GB5749-2006) on July 1, 2007, which greatly increased the control indicators of organic pollutants, aiming to continuously improve water quality by increasing detection indicators. To ensure that various toxic and harmful f...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that existing preoxidants (such as chlorine, chlorine dioxide, hydrogen peroxide, ozone and potassium permanganate, etc.) have weak ability to oxidize and degrade organic pollutants, easily produce toxic and harmful by-products, and are inconvenient to use and operate. , The problem of high operating investment costs, and provides a water treatment method that uses manganese sand to catalyze the oxidation of monopersulfate to degrade organic pollutants

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