发明名称 |
FREMGANGSMAADE TIL BEHANDLING AF AFFALD INDEHOLDENDE TUNGMETALHOLDIGE FORURENINGER |
摘要 |
<p>Process for the irreversible treatment of toxic waste by means of a silicate, in the presence of water, in such a way as to form a solid aggregate includes treatment of the silicate in an acid medium, for the purpose of obtaining silicic acid of low molecular weight; mixing the silicic acid with the waste to be treated, in the presence of water and controlling the pH between 0 and 4 in a sufficiently acid medium to cause the waste to undergo at least partial solution; precipitation of a gel of high molecular weight from the resultant aqueous mixture; addition thereto of a mixture which reacts with the gel of high molecular weight to form a silicate, possibly in the presence of a cementation agent, in such a way as to produce a sludge, and the hardening of the sludge into a solid aggregate which can not be changed physically so as to release again the harmful or toxic waste into the environment.</p> |
申请公布号 |
DK152094(C) |
申请公布日期 |
1988.09.12 |
申请号 |
DK19760003212 |
申请日期 |
1976.07.15 |
申请人 |
INTERNATIONALE DE PUBLICITE ET D'AGENCES COMMERCIALES (SIPA |
发明人 |
LOCKERENTE, SERGE H. RYSMAN DE;VOORDE, NORBERT L. VAN DE |
分类号 |
C02F11/00;B09B3/00;C04B18/02;C04B18/04;C04B28/24;C04B32/00;G21F9/16;G21F9/30;(IPC1-7):A62D3/00 |
主分类号 |
C02F11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|