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Volume 22, Issue 7-8

July 1990

ISSN 0273-1223

EISSN 1996-9732

In this Issue

Research Articles
Index

Research Articles

The Olifantsfontein Nutrient Removal Plant

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

An Innovative Technology for Upgrading Nutrient Removal Activated Sludge Plants

Jiří Wanner; Miroslav Kos; Petr Grau

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

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

Upgrading Wastewater Treatment Plants with Anaerobic Selectors

K. D. Tracy; S. N. Hong

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

R. Schönberger

Upgrading Wastewater Treatment Plants for Biological Nutrient Removal

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

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

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

C. F. Seyfried; E. Dammann

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

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

Pre-Precipitation Facilitates Nitrogen Removal without Tank Expansion

Ingemar Karlsson; Gunnar Smith

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

Bengt Andersson; Björn Rosén

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

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

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

W. Maier

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

Jörg Londong; Stefan Zander

Rehabilitation and Upgrading of the Beni Suef City Wastewater Treatment Plant

Ahmed Fadel

Tertiary Waste Water Treatment with Flotation Filters

H. J. Kiuru

Ultraviolet Disinfection in Municipal Wastewater Treatment Plants

Jan Maarschalkerweerd; Rory Murphy; Gail Sakamoto

Upgrading Wastewater Treatment by Water Hyacinth in Developing Countries

Pradeep Kumar; R. J. Garde

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

I. Sekoulov; R. Addicks; J. Oles

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

G. Bahre; W. Firk; M. Gassen

Aerated Biofilters for Nitrification and Effluent Polishing

Catherine Paffoni; Michel Gousailles; Frank Rogalla; Pierre Gilles

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

Hallvard Ødegaard; Bjørn Rusten

Nitrification and Denitrification in Combined Activated Sludge Systems

D. Wartchow

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

M. Morper; A. Wildmoser

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

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

G. Petersen

Dosage Control for a Higher Efficiency of the Separation Process

Guenter Schrank

Upgrading Existing Activated Sludge Treatment Plants with Fine Pore Aeration Systems

Michael K. Stenstrom

Upgrading Oxygen Transfer in the Activated Sludge Process

M. Pelkonen

Optimizing Polymer Consumption in Sludge Dewatering Applications

P. M. Crawford

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

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

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

Monika Horster; Karlheinz Jacobitz

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

Anton Huber

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

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

Improved Phosphorus Elimination and Nitrogen Oxidation through Pre-Precipitation

Wolfgang Firk

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

M. Streichan; D. Junghans; G. Schön

Effect of Easily Degradable Carbon Sources on Nitrogen Removal Efficiency

Elzbieta Plaza; Bengt Hultman; Josef Trela

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

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

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

Nasim A. Khan; Indu Mehrotra

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

R. Huster; C. H. Möbius

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

R. Mitsdörffer; W. Demharter; W. Bischofsberger

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

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

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

H. Fleckseder; K. Götzendorfer; G. Schnell

The Linpor-Process for Nitrification and Denitrification

H. Reimann

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

A. Kraft; C. F. Seyfried

Upgrading of Wastewater Treatment Plants Using Pure Oxygen

Frederick J. Gould

Upgrading of Kanpur Wastewater Treatment Plant by Phased Expansion

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

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

Brian Evans; Justyna Kempa-Teper; Keith Murphy

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

H. J. Schmidt-Holthausen

Improvement of Wastewater Treatment Plant Projects

Edward S. Kempa

Wastewater Treatment by Soil Absorption Systems

T. Ebers; W. Bischofsberger

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

S. Rettinger; W. Bischofsberger

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

J. Buttz; G. Daigger; M. Robbins

Metal Removal by Waste Biomass to Upgrade Wastewater Treatment Plants

C. Venkobachar

Preface

W. Hegemann; W. Bischofsberger; E. Englmann

Index

Subject Index

Cover Image

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Prediction of household wastewater treatment systems' in situ performance based on standardized tests

ISSN 0273-1223 EISSN 1996-9732

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