Commissioning of the new water line of the Central wastewater treatment plant in Prague and its impact on the operation of the existing water line

Abstract

This paper describes the commissioning of the new water line (NWL) of the Central wastewater treatment plant in Prague and also the gradual reduction of the existing water line (EWL) loading. Concerning the NWL, the gradual start-up of the process without inoculation will be described. As to the EWL, the presentation describes the adaptation of the EWL operation to the relatively quick reduction of loading to approximately 35%. HIGHLIGHTS Prague Central WWTP is the largest municipal WWTP in the Czech Republic using the in situ bioaugmentation of nitrification.; The capacity of the plant was recently upgraded by building a new water line which is operated in parallel to the existing water line.; The start-up of the new activated sludge system was done without any sludge inoculation.; The new water line helped gradually to reduce the loading of the existing water line.;

Keywords

• activated sludge
• nitrogen removal
• operation
• process start-up
• wwtp commissioning