Method and device for removing bromate in water

Abstract

The invention relates to a method and a device for removing the bromate in water, which is characterized by radiating the water by ultraviolet with the wavelength between 150-250 nm, and is particularly suitable for the natural water production that the water is radiated by the ultraviolet with the wavelength between 150-240 nm and then the bromate in water is measured not more than 0.01 mg / L. Compared with the prior art, the method is more simple, adds an ultraviolet radiation technology before filling the natural mineral water, restrains the bromate content in water, maintains the ozone residual effect in filling, does not change the raw water quality such as pH value and needs any processing medicament.

Description

technical field [0001] The invention relates to a method and a device for conveniently removing bromate in water, especially for removing bromate in water after the ozone sterilization process for producing natural water such as natural mineral water or mountain spring water, while retaining residual ozone meeting requirements. Background technique [0002] In addition to many organic and inorganic substances in natural raw water, bromides also exist in ppb levels. At present, the advanced treatment and sterilization process of natural water such as drinking natural mineral water or mountain spring water mostly adopts ozone sterilization, and a certain amount of ozone residue is required for bottled water, which can sterilize both water and bottle caps at the same time. However, when ozone is used for disinfection, the bromide in water reacts with ozone and will be converted into bromate bromate (BrO3), which is difficult to remove by conventional water treatment processes. ...

AI Technical Summary

Problems solved by technology

However, the gas dosing process in the production water process is complicated, which increases the cost of water production, and can only inhibit the formation of bromate, but cannot completely block its production. The generated bromate can be adsorbed by suitable activated carbon , but the disadvantage is that a specific activated carbon must be selected, and the activated carbon treatment is easily affected by factors such as the PH value and water temperature of the treated water, and the effect is unstable. In particular, the activated carbon adsorption also removes the residual ozone at the same time, which does not meet the requirements. Process requirements for bottled mineral water

Moreover, this method changes the quality of the water because it makes the water acidic, which may corrode the water pipes and equipment on the one hand, and also does not meet the expectations of the market to provide weakly alkaline healthy drinking water.

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