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Abstract

In the nuclear power plant of Chooz an installation for flocculation and chemical precipitation has been built in order to treat miscellaneous radioactive effluents continuously. It is an industrial prototype of 5 m**3/h resulting from several years of research, first on laboratory scale, afterwards in a discontinuous system and finally in a continuous pilot plant of small size (500 1/h). The process which is used is based on the adsorption of radioactivity on a floc of copper-ferrocyanide precipitated by ferric chloride. The water is then filtered on a hydro-anthracite filter. After a series of preliminary tests and modifications to the installation it has been possible to develop a technique which satisfies the specified decontamination conditions for SENA in an industrial operation and to reduce the discharges of radioactivity to the Meuse to only 5-10% of the authorized limits. The process aims principally at the treatment of laundry waste, but other effluents such as drains from the rocks, pool water and used decontamination solutions (of the primary pumps) have been treated also with satisfaction. This study is accompanied by a technico-economic evaluation of the process in comparison with evaporation. This comparison is clearly in favour of flocculation.

Additional information

Authors: LUNDY D, SOCIETE D'ENERGIE NUCLEAIRE FRANCO-BELGE DES ARDENNES (SENA), CHOOZ (FRANCE);LABORELEC, RHODE-ST- GENESE (BELGIQUE);MATTON P, SOCIETE D'ENERGIE NUCLEAIRE FRANCO-BELGE DES ARDENNES (SENA), CHOOZ (FRANCE);LABORELEC, RHODE-ST- GENESE (BELGIQUE);PETTEAU J L, SOCIETE D'ENERGIE NUCLEAIRE FRANCO-BELGE DES ARDENNES (SENA), CHOOZ (FRANCE);LABORELEC, RHODE-ST- GENESE (BELGIQUE);ROOFHOOFT R SOCIETE D'ENERGIE NUCLEAIRE FRANCO-BELGE DES ARDENNES (SENA), CHOOZ (FRANCE), SOCIETE D'ENERGIE NUCLEAIRE FRANCO-BELGE DES ARDENNES (SENA), CHOOZ (FRANCE);LABORELEC, RHODE-ST- GENESE (BELGIQUE);LABORELEC, RHODE-ST- GENESE (BELGIQUE), SOCIETE D'ENERGIE NUCLEAIRE FRANCO-BELGE DES ARDENNES (SENA), CHOOZ (FRANCE);LABORELEC, RHODE-ST- GENESE (BELGIQUE)
Bibliographic Reference: EUR 10293 FR, MF, 1985, 148 P; BFR 300, BLOW-UP COPY BFR 740, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
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