A batch dishwasher is realized as a hood-type dishwasher having a treatment chamber (2) with at least one recirculating wash system for spraying wash liquid in the treatment chamber (2), and has at least one final rinse system for spraying final rinse liquid in the treatment chamber (2). The treatment chamber (2) has a first treatment zone (6) and at least one further, second treatment zone (7), wherein items of washware can be treated independently of one another and at least temporarily at the same time in the first and in the at least one second treatment zone (6, 7). The two treatment zones (6, 7) are physically separated from one another by a partition (50) such that when wash liquid is sprayed in one of the two treatment zones (6, 7), recontamination in the other treatment zone (7, 6) is effectively prevented.
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