The work of Seidel showed the possibility of sewage treatment with ponds in which swamp plants were grown. Especially bulrush, Scirpus lacustris, was said to possess high waste water purifying qualities. Based on this information it was decided to start in 1967 an experiment with the treatment ...
auteur(s): Ministerie van Verkeer en Waterstaat, Rijksdienst voor de IJsselmeerpolders (RIJP); by J. de Jong, T. Kok, A.H. Koridon