Control even for only part-loaded water treatment plants having measurement and/or test points for the water and/or the exchanger mass for matching the regular regenerations to the actual degree of exhaustion of the total exchanger mass

摘要

If sufficient brine has been supplied for salting all loaded resin grains of the exchanger mass (2) situated in the treatment vessel (1), then, released by a test point (11), (27), (26), preferably in a test container (23) arranged near the central control valve (3), further unnecessary supply of regeneration agent (8) is prevented by a magnetically controlled valve (12) or a fifth central control valve (3) position slow washing. The test container (23) is in parallel in a by-pass to the channel water duct (7), (10), (14), (15) and through which thus flows flushing water, during the salting, from bottom to top, which flushing water passes the hardness constituents, which were taken up during operation and released by the ion exchanger resin (2), via the flushing water connection (10) of the central control valve (3) into the channel (15) and, after completion of salting of the resin bed layer (height X) lying beneath the submerged filter (19) of the test water take-off point, flows through the test container with sodium chloride solution (8), capable of regeneration, containing free Na ions and likewise salts its resin filling (26). Under time control, during the salting, instead of the channel water, untreated water is fed via a three-way magnetically controlled valve (22) to the test container (23) to elute the test resin (26). A resin-related hardness conductivity sensor (27) or a hardness sensor having a regenerable packing made of ion-exchanging swelling resin thus enable precise switching. IMAGE