Method for removing bromate contained in drinking water
A drinking water and bromate technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of reduced bromate removal efficiency by activated carbon, increased drinking water treatment costs, and high treatment costs , to achieve the effect of being suitable for popularization, low production cost and low processing cost
Inactive Publication Date: 2015-04-15
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
However, there are still some disadvantages, such as adding ammonia and lowering the pH value to control the raw water with too high concentration of bromide ions, and the bromate in the effluent quality often exceeds the standard
Now there are many studies on activated carbon, but after a period of use, the efficiency of activated carbon to remove bromate decreases, and it needs to be regenerated and replaced frequently, which increases the cost of drinking water treatment.
The zero-valent iron method is greatly affected by factors such as DO and water ions, and the cost is high. It is limited to the laboratory and cannot be put into mass production.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0039] A method for removing bromate in drinking water, that is, an adsorption column filled with modified cross-linked chitosan organic polymer adsorption material is connected to the drinking water outlet, and the drinking water is filled with modified cross-linked chitosan organic polymer The bromate in drinking water can be removed after the modified cross-linked chitosan organic polymer adsorption material in the adsorption column of the polymer adsorption material is adsorbed, which specifically includes the following steps:
[0040] (1) Preparation of modified cross-linked chitosan organic polymer adsorption material
[0041] Dissolve 1.0 g of chitosan completely in 100 ml of hydrochloric acid solution with a concentration of 0.1 mol / L, and heat up to 50° C. to obtain a chitosan hydrochloric acid solution with a concentration of 10 g / L;
[0042] Then, control the rate of dripping at 15ml / min Towards Add 4.8ml of glutaraldehyde aqueous solution with a mass percent conce...
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The invention discloses a method for removing bromate in drinking water. That is, an absorption column filled with modified cross-linked chitosan organic polymer adsorption material is connected to the drinking water outlet, and the drinking water passes through the modified cross-linked absorption column filled with modified cross-linked chitosan organic polymer adsorption material. After the chitosan organic polymer adsorption material is adsorbed, bromate in drinking water can be removed. A method for removing bromate in drinking water of the present invention can effectively remove bromate in drinking water, and the method has the advantages of no secondary pollution, non-toxic and harmless, recyclable, simple operation and low treatment cost features.
Description
technical field [0001] The invention relates to a method for removing bromate in drinking water, in particular to a method for removing trace amounts of bromate produced after drinking ozone disinfection by using an adsorption column filled with modified cross-linked chitosan as an adsorption material. Background technique [0002] With the development of water treatment technology and people's emphasis on drinking water quality, ozone disinfection technology has been widely used in drinking water. However, when bromide is contained in the treated water, bromate will be produced as a by-product after ozone oxidation treatment. Bromate is very harmful to the human body, has carcinogenicity and mutagenicity, and is classified as a potential carcinogen of Class 2B (higher carcinogenicity) by the International Agency for Cancer. The latest "Guidelines for Drinking Water Quality" of the World Health Organization (WHO) revised the limit value of bromate from 25μg / L to 10μg / L. ) ...
Claims
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Login to View More IPC IPC(8): B01J20/24C02F1/28
Inventor 顾海欣吴薇王精志尹晓航马骏涛沈昕刘剑青冯文煊李宽阳施文健文欢欢
Owner UNIV OF SHANGHAI FOR SCI & TECH