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1. (WO2001031658) METHOD AND DEVICE FOR REDUCING CATIONIC IMPURITIES AND FOR DOSING LITHIUM IN THE COOLING WATER OF A LIGHT-WATER REACTOR AND A COOLING WATER SYSTEM OF A LIGHT-WATER REACTOR HAVING SUCH A DEVICE

Pub. No.:    WO/2001/031658    International Application No.:    PCT/DE2000/003763
Publication Date: Fri May 04 01:59:59 CEST 2001 International Filing Date: Wed Oct 25 01:59:59 CEST 2000
IPC: C02F 1/42
C02F 1/469
C02F 1/70
G21C 19/307
Applicants: FRAMATOME ANP GMBH
ENBW KRAFTWERKE AG
MEINTKER, Manfred
BOLZ, Michael
ENKLER, Günther
RÜHLE, Wilfried
Inventors: MEINTKER, Manfred
BOLZ, Michael
ENKLER, Günther
RÜHLE, Wilfried
Title: METHOD AND DEVICE FOR REDUCING CATIONIC IMPURITIES AND FOR DOSING LITHIUM IN THE COOLING WATER OF A LIGHT-WATER REACTOR AND A COOLING WATER SYSTEM OF A LIGHT-WATER REACTOR HAVING SUCH A DEVICE
Abstract:
The aim of the invention is to rectify disadvantages of conventional arrangements for dosing lithium in cooling water containing cationic impurities or for reducing cationic impurities. The cooling water cycle is guided through a first side of an electrodialysis unit and a concentration cycle is guided through a second side of the electrodialysis unit. Cationic impurities are filtered out of the medium of the concentration cycle by means of a selective ion exchanger that is arranged in the concentration cycle.