Water treatment sterilization method by ultraviolet catalysis hydrogen peroxide matched with chlorine/chloramine

A disinfection method, ultraviolet technology, applied in hydrogen peroxide enhanced ultraviolet disinfection, ultraviolet catalyzed hydrogen peroxide synergistic chlorine/chloramine disinfection water treatment and disinfection field, can solve the problem of high chlorine dosage, low inactivation efficiency, and can not guarantee the microorganisms in drinking water at the same time Safety and chemical safety and other issues, to achieve the effect of production volume control and efficient control

Inactive Publication Date: 2011-08-31
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for microorganisms that are difficult to be inactivated by ultraviolet rays in water, such as Bacillus subtilis and viruses, the combined disinfection technology of ultra

Method used

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  • Water treatment sterilization method by ultraviolet catalysis hydrogen peroxide matched with chlorine/chloramine
  • Water treatment sterilization method by ultraviolet catalysis hydrogen peroxide matched with chlorine/chloramine
  • Water treatment sterilization method by ultraviolet catalysis hydrogen peroxide matched with chlorine/chloramine

Examples

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Embodiment 1

[0019] Disinfect the effluent from the filter of the drinking water plant, add 0.10mmol / L hydrogen peroxide at the inlet of the ultraviolet disinfection reactor, mix well and enter the ultraviolet disinfection reactor for disinfection, the ultraviolet dose is 20mJ / cm 2 . Add 0.10-0.20mg / L chlorine at the outlet of the ultraviolet disinfection reactor, and the disinfection time is 15 minutes.

Embodiment 2

[0021] Disinfect the effluent from the filter of the drinking water plant, add 0.10mmol / L hydrogen peroxide at the inlet of the ultraviolet disinfection reactor, mix well and enter the ultraviolet disinfection reactor for disinfection, the ultraviolet dose is 20mJ / cm 2 . Add 0.20-0.40mg / L chloramine at the outlet of the ultraviolet disinfection reactor, the ratio of chlorine to ammonia is 4:1, and the disinfection time is 40 minutes.

Embodiment 3

[0023] Disinfect the effluent from the filter of the drinking water plant, add 0.10mmol / L hydrogen peroxide at the inlet of the ultraviolet disinfection reactor, mix well and enter the ultraviolet disinfection reactor for disinfection, the ultraviolet dose is 20mJ / cm 2 . Add 0.20-0.40mg / L chloramine at the outlet of the ultraviolet disinfection reactor, the ratio of chlorine to ammonia is 3:1, and the disinfection time is 60 minutes.

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Abstract

The invention relates to a water treatment sterilization method by ultraviolet catalysis hydrogen peroxide matched with chlorine/chloramine, belonging to the technical field of the sterilization in water treatment. The water treatment method is used for sterilizing the water by the chlorine/chloramine based on ultraviolet and hydrogen peroxide photocatalysis sterilization. The method comprises the steps of: adding 0.05-0.20mmol/L of hydrogen peroxide during ultraviolet irradiation, and feeding 0.10-0.20mg/L of chlorine into the water which is irradiated by the ultraviolet to sterilize; or adding 0.05-0.20mmol/L of hydrogen peroxide during the ultraviolet irradiation, and feeding 0.20-0.40mg/L of chloramine into the water which is irradiated by the ultraviolet to sterilize. The method is used for producing hydroxyl radical which is high in oxidability by the ultraviolet catalysis hydrogen peroxide, the deactivation effect to chlorine and ultraviolet-resistant sterilized microorganism is greatly improved due to the synergistic sterilization effect of the hydroxyl radical and the chlorine/chloramine, so that the biological safety and the chemical safety of the water can be guaranteed, and the method can be widely used for sterilizing and purifying drinking water.

Description

technical field [0001] The invention relates to a hydrogen peroxide enhanced ultraviolet disinfection method, in particular to a water treatment and disinfection method for ultraviolet catalyzed hydrogen peroxide and chlorine / chloramine disinfection, belonging to the technical field of disinfection in water treatment. Background technique [0002] At present, the disinfection process commonly used in the field of drinking water is chlorine disinfection process. Chlorine is a very active oxide that can react with various organic substances in water to produce different types of chlorinated hydrocarbon compounds. A large number of epidemiological investigations have shown that long-term drinking of chlorine-disinfected drinking water increases the risk of dying from digestive and urinary system cancers, and has a statistical relationship with the mortality of other cancers. On the other hand, since the 1970s, new pathogenic microorganisms have been found in drinking water, suc...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F1/50C02F1/32
Inventor 张永吉周玲玲宋正国叶河秀邓慧萍
Owner TONGJI UNIV
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