| abstract |
The invention relates to a method for photocatalytic water treatment, in which contaminated water is passed through a reactor (R) having at least two containers (1, 2, 3, 4). A photocatalyst is added to the contaminated water. The suspension consisting of contaminated water and photocatalyst is irradiated with light as it flows through the reactor (R) and the photocatalyst is finally separated from the purified water. To improve the cleaning performance, the space of the reactor (R) to be flowed through by the suspension is dimensioned by cascading at least two containers (1, 2, 3, 4) in such a way that after the suspension has passed through the reactor (R) once at its outlet purified water is present. Gas is also continuously fed to each of the containers (1, 2, 3, 4) of the reactor (R) while the process is being carried out. The reactor (R) is geometrically designed in such a way that, taking into account the size of its space through which the suspension flows, the light is used to irradiate the suspension over the largest possible capture area. |