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The Olifantsfontein Nutrient Removal Plant

J. A. van Huyssteen; J. L. Barnard; J. Hendriksz

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An Innovative Technology for Upgrading Nutrient Removal Activated Sludge Plants

Jiří Wanner; Miroslav Kos; Petr Grau

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Upgrading a Municipal Activated Sludge Plant for High-Rate Biological Nutrient Removal

Clifford W. Randall; David Waltrip; Milind V. Wable

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Upgrading Wastewater Treatment Plants with Anaerobic Selectors

K. D. Tracy; S. N. Hong

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Conversion of Existing Primary Clarifiers According to the EASC Process for Biological Phosphorus Removal

R. Schönberger

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Upgrading Wastewater Treatment Plants for Biological Nutrient Removal

B. Rabinowitz; T. D. Vassos; R. N. Dawson; W. K. Oldham

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Renovation of an Extended Aeration Plant for Simultaneous Biological Removal of Nitrogen and Phosphorus Using Oxic-Anaerobic-Oxic Process

Katsumi Moriyama; Kazuaki Sato; Yoshinobu Harada; Kazuo Washiyama; Koich Okamoto

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Upgrading of Wastewater Treatment Plants for the Reduction of Nitrogen and Phosphorus in Schleswig-Holstein, FRG

C. F. Seyfried; E. Dammann

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Upgrading of the Treatment Plants in Stockholm to Meet More Stringent Requirements

J. Hultgren; L.-G. Reinius; M. Tendaj

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Pre-Precipitation Facilitates Nitrogen Removal without Tank Expansion

Ingemar Karlsson; Gunnar Smith

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Upgrading for Biological Nitrogen Removal – Some Full-Scale Experiences from Sweden

Bengt Andersson; Björn Rosén

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Upgrading a Large Municipal Sewage Treatment Plant by a Combination of Biological and Chemical Processes

H. H. Hahn; E. Hoffmann; A. Kleinschmidt; R. Klute

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Examples for the Upgrading of Existing Activated Sludge Plants for Nutrient Removal

W. Maier

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Steps in Planning the Expansion of the Large Sewage Treatment Plant at Buchenhofen, Operated by the Wupper Watershed Management Association

Jörg Londong; Stefan Zander

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Rehabilitation and Upgrading of the Beni Suef City Wastewater Treatment Plant

Ahmed Fadel

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Tertiary Waste Water Treatment with Flotation Filters

H. J. Kiuru

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Ultraviolet Disinfection in Municipal Wastewater Treatment Plants

Jan Maarschalkerweerd; Rory Murphy; Gail Sakamoto

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Upgrading Wastewater Treatment by Water Hyacinth in Developing Countries

Pradeep Kumar; R. J. Garde

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Post-Denitrification with Controlled Feeding of Activated Sludge as H Donator

I. Sekoulov; R. Addicks; J. Oles

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Development of a Two-Stage Treatment Plant for Extensive Nitrogen and Phosphorus Elimination

G. Bahre; W. Firk; M. Gassen

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Aerated Biofilters for Nitrification and Effluent Polishing

Catherine Paffoni; Michel Gousailles; Frank Rogalla; Pierre Gilles

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Upgrading of Small Municipal Wastewater Treatment Plants with Heavy Dairy Loading by Introduction of Aerated Submerged Biological Filters

Hallvard Ødegaard; Bjørn Rusten

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Nitrification and Denitrification in Combined Activated Sludge Systems

D. Wartchow

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Improvement of Existing Wastewater Treatment Plants' Efficiencies without Enlargement of Tankage by Application of the Linpor-Process – Case Studies

M. Morper; A. Wildmoser

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Performance Increase of Papermill Waste Water Treatment Plants by a High-Capacity Trickling Filter Inserted as First Biological Stage

C. H. Möbius; I. Demel; R. Huster

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Upgrading of a Combined Industrial and Municipal Wastewater Treatment Plant – The Fredericia Plant, Denmark

G. Petersen

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Dosage Control for a Higher Efficiency of the Separation Process

Guenter Schrank

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Upgrading Existing Activated Sludge Treatment Plants with Fine Pore Aeration Systems

Michael K. Stenstrom

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Upgrading Oxygen Transfer in the Activated Sludge Process

M. Pelkonen

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Optimizing Polymer Consumption in Sludge Dewatering Applications

P. M. Crawford

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Biological Nitrogen Removal in a Complete Mixing Type Aerator with ORP Control

Hiroshi Nakanishi; Masayuki Fukagawa; Masami Takeuchi; Munetaka Ishikawa; Masao Ukita ...

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Investigations on Nitrogen Elimination in Sewage Treatment Plants including Separate Aeration of Return Sludge

Monika Horster; Karlheinz Jacobitz

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How to Increase Efficiency of Sewage Plants and Obey the Latest Regulations

Anton Huber

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Retrofitting Activated Sludge Plants to Improve the Removal of Nitrogen and Phosphorus by Biological Processes

Clifford W. Randall; Dipankar Sen; Thomas J. Grizzard

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Improved Phosphorus Elimination and Nitrogen Oxidation through Pre-Precipitation

Wolfgang Firk

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Comparative Study of Biological Phosphorus Removal by Activated Sludge in a Pilot Plant and in Laboratory Batch Experiments

M. Streichan; D. Junghans; G. Schön

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Effect of Easily Degradable Carbon Sources on Nitrogen Removal Efficiency

Elzbieta Plaza; Bengt Hultman; Josef Trela

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Operational Experience with Phosphorus and Nitrogen Removal at the Himmerfjärden Plant, Sweden

Elzbieta Plaza; Jan Bosander; Alf-Göran Dahlberg; Bengt Göran Hellström

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Performance of Laboratory-Scale Upflow Anaerobic Sludge Blanket (UASB) Reactors

Nasim A. Khan; Indu Mehrotra

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Performance Increase of Aerobic-Biological Waste Water Treatment Plants in Papermills by Anaerobic Pretreatment of High-Strength Partial Flows

R. Huster; C. H. Möbius

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Stabilization and Disinfection of Sewage Sludge by Two-Stage Anaerobic Thermophilic/Mesophilic Digestion

R. Mitsdörffer; W. Demharter; W. Bischofsberger

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Upgrading of Wastewater Treatment Plants: Oxidation Ponds in Series with Biological Filters

P. G. J. Meiring; J. A. van Huyssteen

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Upgrading of a Wastewater Treatment Plant in a Winter Tourism Resort Area Based on In-Stream Standards

H. Fleckseder; K. Götzendorfer; G. Schnell

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The Linpor-Process for Nitrification and Denitrification

H. Reimann

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Biologically Intensified Filtration Processes (Dry Bed Filter) for an Efficient Effluent Improvement of Wastewater Treatment Plants – Applications

A. Kraft; C. F. Seyfried

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Upgrading of Wastewater Treatment Plants Using Pure Oxygen

Frederick J. Gould

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Upgrading of Kanpur Wastewater Treatment Plant by Phased Expansion

M. Kulshrestha; A. Srivastava; C. Venkobachar; S. Ramaseshan

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Design of a Low Strength Sewage Treatment Plant in a Cold Climate

Brian Evans; Justyna Kempa-Teper; Keith Murphy

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The Influence of Upgrading of Waste Water Treatment Plants on the Design of Aeration Systems

H. J. Schmidt-Holthausen

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Improvement of Wastewater Treatment Plant Projects

Edward S. Kempa

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Wastewater Treatment by Soil Absorption Systems

T. Ebers; W. Bischofsberger

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Subsoil Percolation of Sewage – Purification Efficiency of Unsaturated Zone and Mass Balance of Organic Load

S. Rettinger; W. Bischofsberger

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Real-Time Biological Process Optimization Using Off-Line and On-Line Monitoring

J. Buttz; G. Daigger; M. Robbins

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Metal Removal by Waste Biomass to Upgrade Wastewater Treatment Plants

C. Venkobachar

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Index

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Research Articles

Preface

W. Hegemann; W. Bischofsberger; E. Englmann

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