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Application of Ce(IV) in industrial wastewater treatment

Journal of Rare Earths 2010年第S1期28卷 37-39页

作者：赵建军李炳伟杨晨轩饶向东 Zibo Baosteel Lingzhi Rare Earth Hi-Tech Co. Ltd.

At present,rare earth application in wastewater treatment has become more and more widely,according to the fact that the Ce(IV) has the strong oxidation ability under acid condition,we have studied the application of Ce(IV) in industrial wastewater treatment *** showed that oxidation-reduction reaction occurred between Ce(IV) and the organic compounds or other reducing substances in industrial wastewater,thereby the colority and CODcr reduced ***(IV) formed [Ce(OH)x·nH2O](4-x)+ after hydrolyzation and Ce(III) obtained after Ce(IV) reduction formed [Ce(OH)x·nH2O](3-x)+ after hydrolyzation,these hydrate had big specific surface area,could adsorb the suspension substances and removed toxic or harmful ions in industrial *** treatment by Ce(IV),the analytical results of industrial wastewater are as follows:The CODcr became 58 mg/L from 1646 mg/L,the total COD removal efficiency was more than 95.0%.Turbidity reduced to no more than 10NTU from *** chroma became 6 degree from 26 degree,suspension substances content decreased to no more than 2 mg/L from 36 mg/L,and total arsenic and fluorion became water treatment chemical.

关键词： wastewater treatment Ce(IV) CODcr water treatment chemical rare earths

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The application of Ce(Ⅳ) in industrial wastewater treatment

The application of Ce(Ⅳ) in industrial wastewater treatment

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第六届国际稀土开发与应用研讨会

作者： Jianjun Zhao~*,Chenxuan Yang,Bingwei Li,Xiangdong Rao (Zibo baosteel lingzhi rare earth hi-tech co.,ltd.ZiBo,Shandong,China,255400)

How to treat industrial wastewater is a difficult problem,conventional techniques are limited or often ***,it was proposed many new methods and water treatment *** to that the Ce(Ⅳ) has the strong oxidation ability under acid condition,we studied the application of Ce(Ⅳ) in industrial wastewater treatment originally. Results showed that Oxidation-reduction reaction occurred between Ce(Ⅳ) and the organic compounds or other reducing substances in industrial wastewater,thereby the color and CODcr have reduced ***(Ⅳ) forms[Ce(OH)x·nHO](4x)+) after hydrolyzation and Ce(Ⅲ) obtained after Ce(Ⅳ) reduction forms[Ce(OH)x·nHO](3x)+) after hydrolyzation,these hydrate have big specific surface area,can adsorb the suspension substances and remove toxic or harmful ions in industrial *** treatment by Ce(Ⅳ),The analytical results of industrial wastewater are as follows:The CODcr has became 58mg/L from 866 mg/L,the total COD removal efficiency was more than 95.0%.The chroma has became 6degree from 26degree,Suspension Substances content has decreased to no more than 2mg/L from 36 mg/L, and total Arsenic and fluorion have becamewater treatment chemical.

关键词： wastewater treatment Ce(Ⅳ) CODcr water treatment chemical

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