Abstract
In 1987 an action plan was passed in the Danish Parliament demanding a considerable reduction
of the discharge of nutrients to the aquatic environment in Denmark. Consequently, the two largest
wastewater treatment plants in the Copenhagen area had to be upgraded to include nutrient removal. For
more than 8 years an extensive effort has been made to determine an optimum solution for this upgrading
from a technical and financial point of view. The work included six years of comprehensive pilot plant
investigations with the aim of thoroughly studying and interpreting the kinetics of the processes involved. The
investigations revealed valuable information particularly concerning limitations of the nitrification process.
Consequently, the investigations contributed to an expectation of no unforeseen problems during the
implementation of the upgraded plants. This paper presents the results of the start-up of the two full-scale
plants with the main emphasis laid on the kinetic performance in relation to the information achieved from the
pilot tests. The results showed that the start-up of the full scale plants proceeded with great accuracy as
expected from the investigations. Accordingly, the implementation of the plants was carried out successfully,
ending an era of more than 10 years in total.
Original language | English |
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Journal | Water Science and Technology |
Volume | 43 |
Issue number | 11 |
Pages (from-to) | 153-160 |
ISSN | 0273-1223 |
Publication status | Published - 2001 |
Keywords
- Activated sludge
- kinetic interpretation
- domestic wastewater
- start-up performance
- nutrient removal