MODULAR WATER TREATMENT PLANT AND METHOD FOR OPERATING SAME

摘要

The invention relates to a modular water treatment plant comprising one or several identical modules connected in parallel. Each module consists of a basin (1) having an inflow pipe (3) for untreated wastewater (2) and a screen (24), a stirring device (4) and a secondary clarification area (13) with a pipe (16) which removes the treated wastewater (2). The stirring device (4) comprises a drive element (5) which via two parallel axes (12) causes an oloid (6) to tumble in an inversion-kinematic manner. The invention further provides for a lifting device (9) by means of which the stirring device (4) can be placed at different heights above the surface of the wastewater (2). A control unit (7) controls both the lifting device (9) and the number of rotations per minute of the parallel axes (12) of the stirring device (4). During the aerobic nitrification process, the oloid (6) is immersed in the wastewater to about 1/3 of its own height. For the anoxic denitrification process, the oloid (6) is immersed in the wastewater (2) to a depth of at least its own height. The two processes referred to above take place alternately.