Process for the biological purification of water or waste water from organic nitrogenous pollutants

摘要

In order to reduce the plant-related complexity, particularly for back-washing, for a combined denitrification-nitrification stage of a water treatment plant or a waste water purification plant, the support used for the biomass for denitrification in a reactor (1) is granular litter material (3) and that for nitrification in a reactor (14) comprises fixed support bodies (26) having a regular geometric structure, for example static mixing elements.