Method for preparing arsenic adsorbent and method for treating waste water

An adsorbent and aqueous solution technology, which is applied in the synthesis field of nanoporous zirconia materials, can solve the problems of low recycling rate, low adsorption capacity, and difficult regeneration, and achieve mild synthesis conditions, simple synthesis methods, and easy elution and regeneration. Effect
CN102698703AInactive Publication Date: 2012-10-03CHONGQING THREE GORGES UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING THREE GORGES UNIV
Publication Date
2012-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for preparing an arsenic adsorbent. The arsenic adsorbent has zirconium oxide of nano-pore structure. The material can effectively treat arsenate and arsenite in the waste water, and can be recycled after waste water treatment. Another objective of the invention is to provide a method for treating waste water containing arsenate or arsenite ions by the arsenic adsorbent prepared by the method. The method contains a 'regeneration' step, so that the arsenic adsorbent can be reused cyclically.
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Description

technical field

[0001] The invention relates to a synthesis method and a use method of a nanoporous zirconia material capable of treating arsenic-containing wastewater. In particular, it relates to a new material capable of removing arsenic from water and capable of regeneration. Background technique

[0002] Arsenic exists widely in nature. Arsenic is highly toxic and has two forms in water, As(Ⅴ) and As(Ⅲ). The World Health Organization (WHO) recommends that the arsenic concentration standard in drinking water is 0.01 mg / L [S. R. Kanel, et al. At present, arsenic pollution is very common. Arsenic poisoning incidents have occurred in Australia, Canada, the United States, Japan, Argentina and other countries. In recent years, my country has also become a country with serious arsenic pollution. Five arsenic pollution incidents occurred in Chenxi County, Hechi, Guangxi, Yangzonghai, Yunnan, and Dashahe, Henan. Once arsenic pollution is formed, it will enter the human body o...

Claims

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