Water Science and Technology

Volume 37 Number 9

Contents

1–8

Upgrading our inherited urban water systems

P. Harremoës

9–16

A systematic approach to optimal upgrading of water and waste water treatment plants

Björn Rosén and Stig Morling

17–24

Upgrading for nitrogen removal, using a combination of SBR (sequencing batch reactor) technique and unloading of existing biological stage

Björn Rosén, Anders Ullman and Nils Ragnarsson

25–31

Lab and pilot scale tests as tools for upgrading - comparison with full scale results

Åsa Malmqvist, Lars Gunnarsson and Christer Torstenon

33–40

Use of on-line data to evaluate the activity in the biological stage at a wastewater treatment plant

B. Björlenius and L.-G. Reinius

41–47

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 and J. M. Audic

49–56

Wastewater flow management to maximise the capacity of sewage treatment plants

J. R. Müller and Kh. Krauth

57–63

Upgrading of Borås wastewater treatment plant based on intelligent process and operation control

Dines E. Thornberg, Marinus Nielsen and Jöran Eriksson

65–71

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 and L. Lange

73–79

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 and E. Dorgeloh

81–88

Development of an air removal system for dissolved air flotation

Torsten Hedberg, Jan Dahlquist, Dick Karlsson and Lars-Ove Sörman

89–95

The use of immersed membranes for upgrading wastewater treatment plants

H. Buisson, P. Cote, M. Praderie and H. Paillard

97–104

Application of biofilm kinetics to the sulfur/lime packed bed reactor for autotrophic denitrification of groundwater

Zhishi Wang

105–112

Up-flow roughing filtration: rehabilitation of a water treatment plant in Tarata, Bolivia

Ana María Ingallinella, Luis María Stecca and Martin Wegelin

113–120

Evaluating ozone dose for AOC removal in two-step GAC filters

R. Vahala, T. Ala-Peijari, J. Rintala and R. Laukkanen

121–126

Upgrading of waterworks with a new biooxidation process for removal of manganese and iron

T. Hedberg and T. A. Wahlberg

127–134

Interaction between the treatment plant and the sewer system in Halmstad: integrated upgrading based on real time control

C. Hernebring, L. Ohlsson, M. Andreasson and L.-G. Gustafsson

135–142

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 and J. J. Heijnen

143–150

Upgrading of waste water treatment plants by cloth-filtration using an improved type of filter-cloth

U. Grabbe, C. F. Seyfried and K.-H. Rosenwinkel

151–158

Nitrogen removal in multi-stage wastewater treatment plants by using a modified post-denitrification system

Dieter Schreff and Peter A. Wilderer

159–166

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 and Greta Bentzen

167–174

Implementing biofilm carriers into activated sludge process-15 years of experience

N. Müller

175–183

Increasing the capacity of an extended nutrient removal plant by using different techniques

B. Andersson, H. Aspegren, U. Nyberg, J. la Cour Jansen and H. Ødegaard

185–192

Upgrading for nitrogen removal under severe site restrictions

P. Balmér, L. Ekfjorden, D. Lumley and A. Mattsson

193–200

Experiences of nitrogen and phosphorus removal in deep-bed filters at henriksdal sewage works in Stockholm

L. Jonsson

201–208

Experience with the upgrading of 14 treatment plants to N & P removal in the municipality of Aarhus

J. Sørensen, J. Andersen, K. Andreasen and K. Hald

209–217

Upgrading of waste water treatment processes for integrated nutrient removal-the BCFS® process

M. C. M. van Loosdrecht, F. A. Brandse and A. C. de Vries

219–226

Temperature effects on biological nutrient removal system with weak municipal wastewater

Choi Euiso, Rhu Daewhan, Yun Zuwhan and Lee Euisin

227–233

Intermittent addition of external carbon to enhance denitrification in activated sludge

S. Hasselblad and S. Hallin

235–242

Clinoptilolite and multipurpose filters for upgrading effluent ammonia quality under peak loads

B. Beler Baykal

243–250

Upgrading an anaerobic/aerobic wastewater treatment plant

U. Austermann-Haun, R. Lange, C.-F. Seyfried and K.-H. Rosenwinkel

251–258

Development of a new process for treatment of a pharmaceutical wastewater

M. Rosén, T. Welander, A. Löfqvist and J. Holmgren