Reactor vessel for treating wastewater by means of aerobic granular sludge technology.

摘要

The invention relates to a reactor vessel (1) for treating wastewater (2), comprising: - a reactor vessel bottom (3) and a reactor vessel wall (4) delimiting the reactor vessel bottom, wherein during use a vertical plug flow may be present in the wastewater in the reactor vessel, - a grid of effluent gutters (5), arranged at such a vertical distance (D) from the reactor vessel bottom that, during use, a row of inlet holes (9) comprised by the effluent gutters is arranged for discharging relatively clean water from an upper layer (10) of the water contained in the reactor vessel as effluent (11), - a grid of recirculation gutters (12), arranged at the same height as the grid of effluent gutters, wherein the recirculation gutters (12) are integrated with the effluent gutters in such a way, that the vertical plug flow is kept intact.