| 摘要 |
<p>The invention relates to a method and a device for purifying waste water in a plurality of sequentially following phases, the waste water (effluent) being aerated in a first phase A, and then being given a preliminary clarification in a second phase B, and then, in a third phase C, secondary aeration and, in a fourth phase D, secondary sedimentation being carried out. Phases with circulation only can be provided directly upstream of the phases, and filtering and storing phases can be provided directly downstream. In order to achieve a simple, space-saving, inexpensive and nevertheless reliable device, carrying out all four purification phases in one tank is provided according to the invention. In order to make possible adaptation to increasing loads and a changing ratio of hydraulic to biochemical load, the partitions between the phases are arranged to be slidable to change their volumes. <IMAGE></p> |
