Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Upgrading Sewage Treatment Plants for Higher Performance by Optimising Reject Water Treatment
4. Conclusions Separate treatment of the nitrogen rich reject water improves the COD/N ratio in the mainstream activated sludge process and consequently improves the efficiency of the biological nitrogen removal in sewage treatment plants. The composition of the reject water is suitable for the use of new biological processes like nitritation/denitritation. Primary sludge can be successfully used as the carbon source for the denitritation, which can be complete and controlled by the primary sludge / reject water ratio. Treating the reject water with the extremely low CODsoluble/N-NH 4 + ratio of 0.64, without an external carbon addition (considering the primary sludge as an internal source), at the volumetric loading rate up to 0.32 kgN/m3, the average nitrogen removal efficiency above 70% was achieved.
Upgrading Sewage Treatment Plants for Higher Performance by Optimising Reject Water Treatment
4. Conclusions Separate treatment of the nitrogen rich reject water improves the COD/N ratio in the mainstream activated sludge process and consequently improves the efficiency of the biological nitrogen removal in sewage treatment plants. The composition of the reject water is suitable for the use of new biological processes like nitritation/denitritation. Primary sludge can be successfully used as the carbon source for the denitritation, which can be complete and controlled by the primary sludge / reject water ratio. Treating the reject water with the extremely low CODsoluble/N-NH 4 + ratio of 0.64, without an external carbon addition (considering the primary sludge as an internal source), at the volumetric loading rate up to 0.32 kgN/m3, the average nitrogen removal efficiency above 70% was achieved.
Upgrading Sewage Treatment Plants for Higher Performance by Optimising Reject Water Treatment
Jenicek, Pavel (Autor:in)
01.01.2004
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Anaerobic Ammonium Oxidation , Hydraulic Retention Time , Nitrogen Removal , Sludge Volume Index , Nitrite Oxidiser Environment , Environmental Management , Geoengineering, Foundations, Hydraulics , Environmental Monitoring/Analysis , Ecotoxicology , Nature Conservation , Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
Upgrading Sewage Treatment Plants for Higher Performance by Optimising Reject Water Treatment
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