Performance intensification of Prague wastewater treatment plant
Language English Country England, Great Britain Media print
Document type Journal Article
PubMed
15553469
Knihovny.cz E-resources
- MeSH
- Biodegradation, Environmental MeSH
- Bioreactors MeSH
- Chlorine chemistry MeSH
- Water Purification instrumentation methods MeSH
- Nitrogen chemistry MeSH
- Cations MeSH
- Oxygen metabolism MeSH
- Waste Disposal, Fluid instrumentation methods MeSH
- Sewage MeSH
- Computer Simulation MeSH
- Water Movements MeSH
- Industrial Waste MeSH
- Models, Theoretical MeSH
- Air MeSH
- Publication type
- Journal Article MeSH
- Geographicals
- Czech Republic MeSH
- Names of Substances
- Chlorine MeSH
- Nitrogen MeSH
- Cations MeSH
- Oxygen MeSH
- Sewage MeSH
- Industrial Waste MeSH
Prague wastewater treatment plant was intensified during 1994--1997 by construction of new regeneration tank and four new secondary settling tanks. Nevertheless, more stringent effluent limits and operational problems gave rise to necessity for further intensification and optimisation of plant performance. This paper describes principal operational problems of the plant and shows solutions and achieved results that have lead to plant performance stabilisation. The following items are discussed: low nitrification capacity, nitrification bioaugmentation, activated sludge bulking, insufficient sludge disposal capacity, chemical precipitation of raw wastewater, simultaneous precipitation, sludge chlorination, installation of denitrification zones, sludge rising in secondary settling tanks due to denitrification, dosage of cationic polymeric organic flocculant to secondary settling tanks, thermophilic operation of digestors, surplus activated sludge pre-thickening, mathematical modelling.
