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Method for controlling generation of bromate in sulfate-radical-based advanced oxidation system

An advanced oxidation and free radical technology, applied in chemical instruments and methods, oxidized water/sewage treatment, special compound water treatment, etc., to achieve safe use, ensure water quality safety, and achieve good control effects.

Inactive Publication Date: 2016-11-09
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to control the problem of bromate generation in the process of treating drinking water, groundwater, sewage and industrial waste water based on the advanced oxidation system of sulfate radical at present, and provides a kind of control based on advanced oxidation system of sulfate radical Bromate Formation Method

Method used

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  • Method for controlling generation of bromate in sulfate-radical-based advanced oxidation system
  • Method for controlling generation of bromate in sulfate-radical-based advanced oxidation system

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specific Embodiment approach 1

[0020] This embodiment is based on the method of controlling the generation of bromate in the advanced oxidation system based on sulfate radicals as follows: Add ammonia to the bromine-containing water treated with the UV-activated persulfate system, stir it fully, and then perform light irradiation According to the photo, the control of bromate formation in the ultraviolet / persulfate advanced oxidation system is completed. The persulfate is sodium persulfate / potassium / calcium / magnesium or sodium monopersulfate / potassium / calcium / magnesium, and the ammonia is ammonium sulfate / ammonium chloride / ammonium nitrate. The dosage of ammonia is determined by the concentration of bromide ion in the water , The molar ratio of ammonia to bromine is 1:1~100:1.

[0021] In this embodiment, the light irradiation can use sunlight, low pressure mercury lamp, medium pressure mercury lamp, high pressure mercury lamp, amalgam ultraviolet lamp, halogen lamp to meet the conditions of use, or use xenon ...

specific Embodiment approach 2

[0023] The difference between this embodiment and the specific embodiment 1 is that the ammonia dosing method adopts a gas method.

specific Embodiment approach 3

[0024] The difference between this embodiment and the specific embodiment 2 is that the dosing method of ammonia and persulfate adopts a solution method.

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Abstract

The invention provides a method for controlling generation of bromate in a sulfate-radical-based advanced oxidation system and relates to a method for controlling bromate in water treatment. The problem that the sulfate-radical-based advanced oxidation system generates suspected cancerogen, namely bromate, and accordingly water quality safety risks are caused is solved. The method includes the step that ammonia is put into the sulfate-radical-based advanced oxidation system and stirred. Ammonia reacts with intermediate products, including hypobromous acid and bromine-containing radicals, of bromate in water, so that generation of intermediate products is inhibited, and control over bromate is achieved. The method has the advantages that the method can efficiently control generation of bromate, meets national domestic drinking water hygienic standard, does not influence oxidation capacity of the advanced oxidation system, is easy to operate and safe to use, does not change original treatment technologies, and is low in operation cost. The method can be used for the control over bormate in the treatment process of drinking water, underground water, sewage and industrial wastewater.

Description

Technical field [0001] The present invention relates to a method for controlling bromate generation in a water treatment process, and more specifically, to a method for controlling bromate generation in an advanced oxidation system based on sulfate radicals, which is suitable for drinking water, groundwater, sewage and Industrial wastewater treatment, etc. Background technique [0002] With the rapid development of industry, the problem of water environmental pollution has become increasingly serious, and the problem of water safety has become the focus of attention. Advanced oxidation technology is an effective method to degrade the hard-to-degrade toxic and harmful pollutants in water. In recent years, advanced oxidation processes based on sulfate radicals have received extensive attention, research and practical applications in the removal of pollutants in water. Sulfate radicals have a higher oxidation-reduction potential (2.5-3.1V), which is more selective than hydroxyl ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/30C02F1/32C02F103/06C02F101/12
CPCC02F1/30C02F1/307C02F1/32C02F1/72C02F2103/06C02F2101/12C02F2305/02Y02W10/37
Inventor 方晶云侯少东潘明玮郭恺恒
Owner SUN YAT SEN UNIV
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