The EssDe^® process is an efficient large-scale process for the treatment of highly polluted wastewater using deammonification.
Partial nitritation oxidizes only about 50% of the ammonium to nitrite. Subsequently, the remaining ammonium along with the nitrite formed is reduced to nitrogen gas by anaerobic ammonium oxidizing bacteria (Planctomycetes).
Compared to conventional nitrification / denitrification, this results in savings of around 60% of energy consumption for aeration and 100% of external free carbon.
The special feature of the EssDe^® process is the extremely high operational stability due to the selective extraction of surplus sludge using a hydrocyclone (patented). The constant separation of the Planctomycetes from the surplus sludge leads to an accumulation of these extremely slow-growing bacteria in the reactor. The increased mass of these highly specialized and very slow-growing bacteria allows for a higher load to the system and a better compensation of disturbing external influences than other processes are able to provide.
The EssDe^® process can be used in both the side and the mainstream plant.



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