FREMGANGSMAATE TIL BEHANDLING AV AVFALL INNEHOLDENDE TUNGMETALLHOLDIGE FORURENSNINGER

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...

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Bibliographische Detailangaben
Hauptverfasser:	LOCKERENTE, SERGE RYSMAN DE, VOORDE, NORBERT VAN DE
Format:	Patent
Sprache:	nor
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DECONTAMINATION ARRANGEMENTS THEREFOR DISPOSAL OF SOLID WASTE LIME, MAGNESIA METALLURGY NUCLEAR ENGINEERING NUCLEAR PHYSICS PERFORMING OPERATIONS PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES SLAG TRANSPORTING TREATING RADIOACTIVELY CONTAMINATED MATERIAL TREATMENT OF NATURAL STONE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	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.