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Issues

Volume 37, Issue 9
May 1998
Issue Cover
ISSN 0273-1223
EISSN 1996-9732
In this Issue

Research Articles

Upgrading our inherited urban water systems
P. Harremoës
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A systematic approach to optimal upgrading of water and waste water treatment plants
Björn Rosén; Stig Morling
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Upgrading for nitrogen removal, using a combination of SBR (sequencing batch reactor) technique and unloading of existing biological stage
Björn Rosén; Anders Ullman; Nils Ragnarsson
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Lab and pilot scale tests as tools for upgrading - comparison with full scale results
Åsa Malmqvist; Lars Gunnarsson; Christer Torstenon
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Use of on-line data to evaluate the activity in the biological stage at a wastewater treatment plant
B. Björlenius; L.-G. Reinius
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Upgrading of wastewater treatment plants for nitrogen removal: industrial application of an automated aeration management based on ORP evolution analysis
P. Caulet; B. Bujon; J. P. Philippe; F. Lefevre; J. M. Audic
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Wastewater flow management to maximise the capacity of sewage treatment plants
J. R. Müller; Kh. Krauth
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Upgrading of Borås wastewater treatment plant based on intelligent process and operation control
Dines E. Thornberg; Marinus Nielsen; Jöran Eriksson
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Establishing a network of on-line monitors at the purification works and in the distribution network of rand water
L. A. Du Preez; A. J. Husselmann; N. R. Acton; L. Lange
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Dynamic simulation for upgrading of wastewater treatment plants—an assessment of treatment plant performance with regard to the EC-directive concerning urban wastewater treatment
A. Sintic; T. Rolfs; M. Freund; E. Dorgeloh
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Development of an air removal system for dissolved air flotation
Torsten Hedberg; Jan Dahlquist; Dick Karlsson; Lars-Ove Sörman
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The use of immersed membranes for upgrading wastewater treatment plants
H. Buisson; P. Cote; M. Praderie; H. Paillard
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Application of biofilm kinetics to the sulfur/lime packed bed reactor for autotrophic denitrification of groundwater
Zhishi Wang
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Up-flow roughing filtration: rehabilitation of a water treatment plant in Tarata, Bolivia
Ana María Ingallinella; Luis María Stecca; Martin Wegelin
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Evaluating ozone dose for AOC removal in two-step GAC filters
R. Vahala; T. Ala-Peijari; J. Rintala; R. Laukkanen
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Upgrading of waterworks with a new biooxidation process for removal of manganese and iron
T. Hedberg; T. A. Wahlberg
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Interaction between the treatment plant and the sewer system in Halmstad: integrated upgrading based on real time control
C. Hernebring; L. Ohlsson; M. Andreasson; L.-G. Gustafsson
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The sharon process: an innovative method for nitrogen removal from ammonium-rich waste water
C. Hellinga; A. A. J. C. Schellen; J. W. Mulder; M. C. M. van Loosdrecht; J. J. Heijnen
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Upgrading of waste water treatment plants by cloth-filtration using an improved type of filter-cloth
U. Grabbe; C. F. Seyfried; K.-H. Rosenwinkel
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Nitrogen removal in multi-stage wastewater treatment plants by using a modified post-denitrification system
Dieter Schreff; Peter A. Wilderer
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Upgrading wastewater treatment plants by the use of biofilm carriers, oxygen addition and pre-treatment in the sewer network
Anette Æsøy; Hallvard Ødegaard; Marius Hægh; Frode Rislå; Greta Bentzen
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Implementing biofilm carriers into activated sludge process-15 years of experience
N. Müller
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Increasing the capacity of an extended nutrient removal plant by using different techniques
B. Andersson; H. Aspegren; U. Nyberg; J. la Cour Jansen; H. Ødegaard
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Upgrading for nitrogen removal under severe site restrictions
P. Balmér; L. Ekfjorden; D. Lumley; A. Mattsson
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Experiences of nitrogen and phosphorus removal in deep-bed filters at henriksdal sewage works in Stockholm
L. Jonsson
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Experience with the upgrading of 14 treatment plants to N & P removal in the municipality of Aarhus
J. Sørensen; J. Andersen; K. Andreasen; K. Hald
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Upgrading of waste water treatment processes for integrated nutrient removal-the BCFS® process
M. C. M. van Loosdrecht; F. A. Brandse; A. C. de Vries
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Temperature effects on biological nutrient removal system with weak municipal wastewater
Choi Euiso; Rhu Daewhan; Yun Zuwhan; Lee Euisin
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Intermittent addition of external carbon to enhance denitrification in activated sludge
S. Hasselblad; S. Hallin
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Clinoptilolite and multipurpose filters for upgrading effluent ammonia quality under peak loads
B. Beler Baykal
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Upgrading an anaerobic/aerobic wastewater treatment plant
U. Austermann-Haun; R. Lange; C.-F. Seyfried; K.-H. Rosenwinkel
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Development of a new process for treatment of a pharmaceutical wastewater
M. Rosén; T. Welander; A. Löfqvist; J. Holmgren
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