FOERFARANDE OCH BIOREAKTOR FOER BEHANDLING AV LAOGAKTIVT ORGANISKT AVFALL FRAON KAERNKRAFTVERK MED HJAELP AV ANAEROBISK JAESNING

The invention concerns a procedure and a bioreactor for treating low activity wastes from nuclear power plants with the aid of anaerobic fermentation. The waste (11,28) is subjected to desired pretreatment, such as e.g. comminution (12) and suspending (13), or a special treatment (30), such as e.g....

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Bibliographische Detailangaben
Hauptverfasser:	RUUSKANEN, ANTTI, TUSA, ESKO, MAEAETTAE, RAIMO
Format:	Patent
Sprache:	fin
Schlagworte:	APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF CULTURE MEDIA DECONTAMINATION ARRANGEMENTS THEREFOR ENZYMOLOGY METALLURGY MICROBIOLOGY MICROORGANISMS OR ENZYMES MUTATION OR GENETIC ENGINEERING NUCLEAR ENGINEERING NUCLEAR PHYSICS PHYSICS PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT SPIRITS TREATING RADIOACTIVELY CONTAMINATED MATERIAL TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE VINEGAR WINE
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Beschreibung
Zusammenfassung:	The invention concerns a procedure and a bioreactor for treating low activity wastes from nuclear power plants with the aid of anaerobic fermentation. The waste (11,28) is subjected to desired pretreatment, such as e.g. comminution (12) and suspending (13), or a special treatment (30), such as e.g. hydrolysis and/or physical dispersion, such as e.g. irradiation, heat treatment or equivalent. The pretreated waste is conducted into a bioreactor (15), where anaerobic decomposition takes place in two steps, the first step being an acid step (15a) and the second step, a methane step (15b). The gases produced in the decomposition process are conducted from the methane step (15b) to gas burning (27), and the undecomposed waste is removed from the process to concentration (20) and packed in barrels (21) or equivalent.