TY - BOOK
T1 - Nutrients removal from wastewaters by the single sludge systems
AU - Gromiec, Marek
AU - Valve, Matti
AU - Liponkoski, Markku
PY - 1982
Y1 - 1982
N2 - Environmental impacts of nitrogenous compounds in
wastewaters discharged into aquatic environments are
presented. Technology for removal of nitrogen from
wastewaters is reviewed. Emphasis is given to the single
sludge systems for nitrogen removal and their performance
in different countries. Nitrification and denitrification
kinetics, as well as state-of-the-art of the mathematical
models for these processes are described.
A single sludge nitrification-denitrification system with
intermittent aeration combined with simultaneous
precipitation of phosphorus with ferrous sulphate was
tested. Experiments were performed in a technical scale
plant at the Suomenoja Research Station, Espoo, and the
obtained results are given. A dynamic mathematical model
was proposed for this process. The model consists of
differential equations, written for ammonia and nitrate
nitrogen, BOD, alkalinity, dissolved oxygen and
heterotrophic and nitrifying organisms. A computer
program for solving these differential equations was
developed and computer simulations were performed to show
the affects of various variables on the performance of
the process. It has been demonstrated that the computer
program is a useful tool for determining the operational
strategies for the process. In addition, technical
considerations for the process are given.
AB - Environmental impacts of nitrogenous compounds in
wastewaters discharged into aquatic environments are
presented. Technology for removal of nitrogen from
wastewaters is reviewed. Emphasis is given to the single
sludge systems for nitrogen removal and their performance
in different countries. Nitrification and denitrification
kinetics, as well as state-of-the-art of the mathematical
models for these processes are described.
A single sludge nitrification-denitrification system with
intermittent aeration combined with simultaneous
precipitation of phosphorus with ferrous sulphate was
tested. Experiments were performed in a technical scale
plant at the Suomenoja Research Station, Espoo, and the
obtained results are given. A dynamic mathematical model
was proposed for this process. The model consists of
differential equations, written for ammonia and nitrate
nitrogen, BOD, alkalinity, dissolved oxygen and
heterotrophic and nitrifying organisms. A computer
program for solving these differential equations was
developed and computer simulations were performed to show
the affects of various variables on the performance of
the process. It has been demonstrated that the computer
program is a useful tool for determining the operational
strategies for the process. In addition, technical
considerations for the process are given.
M3 - Report
SN - 951-38-1593-5
T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
BT - Nutrients removal from wastewaters by the single sludge systems
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -