发明名称 |
Removal of arsenic from aqueous liquids with selected alumina |
摘要 |
The removal of arsenic, from aqueous liquids by adsorption on alumina, is facilitated by selecting the alumina adsorbent to have a particle size below about 200 micrometers, forming a slurry of the alumina and aqueous liquid and agitating the slurry. It has been found that alumina can be selected to have a particle size sufficiently small, or preferably a combination of both particle size sufficiently small and pore size and number sufficiently large, to achieve 50 ppb or less arsenic within about 2 hours treatment. The alumina with adsorbed arsenic is separated from the slurry by steps preferably comprising microfiltration. A precipitation pretreatment can be combined with the slurry treatment e.g. to handle more concentrated solutions.
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申请公布号 |
US5556545(A) |
申请公布日期 |
1996.09.17 |
申请号 |
US19940205486 |
申请日期 |
1994.03.03 |
申请人 |
HER MAJESTY THE QUEEN IN RIGHT OF CANADA, AS REPRESENTED BY THE SECRETARY OF STATE FOR THE ENVIRONMENT |
发明人 |
VOLCHEK, KONSTANTIN;MORTAZAVI, SAVIZ;WHITTAKER, HARRY |
分类号 |
B01D15/02;B01D61/16;C02F1/28;C02F1/44;C02F9/00;(IPC1-7):C02F1/28 |
主分类号 |
B01D15/02 |
代理机构 |
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地址 |
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