Method for removing arsenic in water

A technology for removing water and anions, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. Simple to use effects
CN103803676AInactive Publication Date: 2014-05-21CHINA SHENHUA ENERGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN Ā· China
Current Assignee / Owner
CHINA SHENHUA ENERGY CO LTD
Publication Date
2014-05-21
Estimated Expiration
Not applicable Ā· inactive patent

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Abstract

The invention discloses a method for removing arsenic in water. According to the method, strong base anion exchange resin is used for removing arsenic in water; the molecular structural formula of the strong base anion exchange resin is shown in the specification, wherein n is more than or equal to 2. The method has the advantages of high arsenic removal rate, relatively high selectivity in the presence of certain co-existing ions, simple technological operation and facilitation of industrialization. The strong base anion exchange resin is wide in using pH range and relatively high in adsorption capacity under the condition that the pH value is 1-14. The strong base anion exchange resin is high in adsorption rate, short in equilibrium time, high in adsorption capacity and easy to regenerate and can be recycled.
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Description

technical field

[0001] The invention relates to the technical field of water purification, in particular to a method for removing arsenic in water. Background technique

[0002] Arsenic is widely distributed in nature and exists in rocks, soil, river water, sea water and the atmosphere in the earth's crust. It is well known that both arsenic and arsenic soluble compounds are highly toxic, and the toxicity varies with different compounds. Generally, the toxicity of trivalent arsenic is higher than that of pentavalent arsenic, and the toxicity of inorganic arsenic is higher than that of organic arsenic. Ingestion of low doses of inorganic arsenic, That is to say, it has a great negative impact on health, and it is easy to cause diseases such as skin cancer, bladder cancer, and kidney cancer, and the latest research results show that the harm of arsenic to human health has far exceeded estimates. The World Health Organization (WHO) recommended the latest drinking water standar...

Claims

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