Water Science & Technology

Volume 24 Number 7

Contents

Preface

..........ix

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Operational Experience with an Anoxic Selector Treating Rendering-Plant Wastewaters

Jan Chudoba ..........1–7

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Performance and Design of a Selector for Bulking Control

Jerzy Patoczka and W. Wesley Eckenfelder ..........9–19

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Study of Flocculation Mechanisms by Observing Effects of a Complexing Agent on Activated Sludge Properties

L. Eriksson and B. Alm ..........21–28

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Continuous Estimation of Short Term Oxygen Demand from Respiration Measurements

H. Spanjers and A. Klapwijk ..........29–32

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Prediction of Activated Sludge Sedimentation Based on Sludge Indices

B. Hultman, M. Löwén, U. Karlsson, P. H. Li and L. Molina ..........33–42

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Comparison of Aeration Equipment under Operating Conditions

W. Frey ..........43–45

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Modelling and Experiments on Fluidized-Bed Biofilm Reactors

L. Bignami, B. Eramo, R. Gavasci, R. Ramadori and E. Rolle ..........47–58

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On the Problem of “Two-Phase” Activated Sludge

R.W. Szetela ..........59–64

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Optimization of the Cascade System of Activated Sludge by Means of the Metabolic Activity Measurements of Microorganisms

Korneliusz Miksch ..........65–71

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Choice of Optimal Configurations for Two-Phase Biological Reactors on the Basis of Hydraulic Model Studies of a Wastewater Treatment Plant in Gdańsk

M. Maciejewski ..........73–80

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Treatment of Wastewater in an Upflow Packed-Bed Reactor

M. Roš and B. Mejač ..........81–88

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Economic Removal of Organic and Nutrient Substances from Municipal Wastewaters with Full-Scale U.A.S.B. Fluidized- and Fixed-Bed Reactors

C. Collivignarelli, G. Urbini, A. Farneti, A. Bassetti and U. Barbaresi ..........89–95

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Swedish Full-Scale Experiments on Modified Operational Modes in Removal of Nutrients

L. Eklund, B. G. Hellström, B. Hultman, J. E. Lind and B. Nordström ..........97–102

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Optimization of Nutrient Removal in Stockholm

G. Brattberg, L.-G. Reinius and M. Tendaj ..........103–111

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Investigation of Nitrification under Storm Water Conditions in the Main Treatment Plant, Vienna

G. Schnell ..........113–120

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Factors Affecting Biological Nitrogen Removal Efficiency in a Large Wastewater Treatment Plant

Elzbieta Plaza, Jan Bosander and Jozef Trela ..........121–131

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Operation Experiences with Biological Phosphorus Removal at the Sewage Treatment Plants of Berlin (West)

A. Peter and F. Sarfert ..........133–148

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The Development of Health Guidelines for Wastewater Reclamation

Hillel I. Shuval ..........149–155

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Application of Air Stripping and Adsorption Processes to Volatile Chlorinated Hydrocarbons Removal and Recovery from Water and Wastewaters

H. Schade and A. Sapulak ..........157–163

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Comparative Studies on Water and Wastewater Treatment by Reverse Osmosis

A. Bilyk and R. Szpadt ..........165–173

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Development of Design Criteria for the Chemical Precipitation Process Applied in Cracow Wastewater Reclamation System

S. M. Rybicki and J. Kurbiel ..........175–183

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Strategies for Toxicity Reduction in Industrial Wastewaters

W. Wesley Eckenfelder ..........185–193

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Anaerobic Treatment of Yeast Plant Effluent in Fermentation Reactor System Compared with an Upflow Filter System

M. E. Apolinarski ..........195–202

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Anaerobic Treatment of Pulp Mill Effluents

M. K. Korczak, S. Koziarski and B. Komorowska ..........203–206

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Disposal of Wastewater from Flue Gas Desulphurization (FGD)

M. A Gostomczyk, E. M. Grochulska-Segal and M. M. Sozański ..........207–215

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Intensive Primary Treatment of Urban Wastewater

J. Coma, A. Jabbouri, A. Grasmick and S. Elmaleh ..........217–222

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Efficient (Tube) Settling Tanks

Lazar Ignjatović ..........223–228

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Removal of Ammonia Nitrogen by the Precipitation Method, on the Example of Some Selected Waste Waters

M. W. Zdybiewska and B. Kula ..........229–234

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Specifics of Cementation Processes for Metals Removal

B. M. Khudenko and J. P. Gould ..........235–246

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On the Manifold Role of Lime Coagulation

M. Świderska-Bróż ..........247–253

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The Use of a Turbulent Pipe-Flow for Rapid Flocculation of Precipitate in the Electroplating Wastewater Treatment

J. Kurbiel, A. Sapulak and H. Schade ..........255–259

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Application of New Coalescence Method for Treatment of Emulsified Petroleum Products Wastewater

Y. P. Sedlukho ..........261–268

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Adsorption of Organic Compounds from Aqueous Solutions on Activated Carbons

J. Choma and M. Jaroniec ..........269–276

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Application of Disk Aerators to Recarbonation of Alkaline Wastewater from Wet Gasification of Carbide

E. Gomólka and B. Gomólka ..........277–284

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Physico-Chemical-Biological Treatment of Municipal Wastewater

F. A. El-Gohary, S. I. Abo-Elela, S. A. Shehata and H. M. El-Kamah ..........285–292

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Subject Index ..........293–294

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