Water Science & Technology

Volume 21 Number 10-11

Contents

Measuring the Biological Effects of Pollution: The Mussel Watch Approach

B. L. Bayne ..........1089–1100

Abstract | Full Text PDF

UK State-Of-The-Art — Sewerage Rehabilitation

D. Clegg, A. R. Eadon and D. Fiddes ..........1101–1112

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Sewage Sludge Disposal: Current and Future Options

A. M. Bruce and R. D. Davis ..........1113–1128

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An Overview of the Trends and Future Direction of Information Technology in the Water Industry

M. J. Rouse and R. F. Cranfield ..........1129–1135

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Water Quality Indices for the Management of Surface Water Quality

M. A. House and D. H. Newsome ..........1137–1148

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The Application of a Water Quality Index to River Management

J. M. Tyson and M. A. House ..........1149–1159

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System Identification and Control of the Activated Sludge Process by Use of a Statistical Model

M. Hiraoka and K. Tsumura ..........1161–1172

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Control Objectives and the Modelling of Mlss in Oxidation Ditches

M. von Sperling and J. P. Lumbers ..........1173–1183

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Simultaneous DO Control and Respiration Estimation

Ulf Holmberg, Gustaf Olsson and Bengt Andersson ..........1185–1195

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Dissolved Oxygen Control and Oxygen Utilization Rate Estimation: Extension of the Holmberg/Olsson Method

S. M. Bocken, M. Braae and P. L. Dold ..........1197–1208

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Oxidation-Reduction Potential (ORP) Regulation as a Way to Optimize Aeration and C, N and P Removal: Experimental Basis and Various Full-Scale Examples

J. Charpentier, H. Godart, G. Martin and Y. Mogno ..........1209–1223

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Process Improvement by Computer-Aided Load Smoothing in Activated Sludge Treatment

G. Naghdy and P. Helliwell ..........1225–1237

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The Application of ICA in Sewage Treatment — Witney Evaluation and Demonstration Facility (EDF)

A. J. Butwell, J. M. Burns, R. S. Fielden and M. J. Berry ..........1239–1248

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A Comparison of Several Control Algorithms for Activated Sludge Waste Rate

D. A. Vaccari and C. Christodoulatos ..........1249–1260

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Design of Accidental Pollution Alarm Systems

J. M. Philipot, J. P. Coutant and P. Mousty ..........1261–1270

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Automation of Batch Wastewater Treatment Systems Using Programmable Logic Controllers

James E. Alleman, Michael W. Sweeney and Dennis M. Kamber ..........1271–1282

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The Application of Information Systems and Telemetry to Operational Management in Anglian Water

J. W. Green, C. Page, G. M. Eastman and D. Howes ..........1283–1294

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Oxygen Transfer Efficiency Measurements Using Off-Gas Techniques

W. C. Boyle, B. G. Hellstrom and L. Ewing ..........1295–1300

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Instrument Triplication in Sewage Treatment

J. M. Burns ..........1301–1308

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Control of Polymer Addition for Sludge Conditioning: A Demonstration Study

H. W. Campbell and P. J. Crescuolo ..........1309–1317

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Automation and Optimisation of Centrifuge Sludge Dewatering

Gunter Schrank and Clive Murren ..........1319–1324

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ICA — Evolution is Better than Revolution

A. R. Comley ..........1325–1331

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Measurements, Data Analysis and Control Methods in Wastewater Treatment Plants—State of the Art and Future Trends

Gustaf Olsson, Bengt Andersson, Bengt Göran Hellstrom, Hans Holmström, Lars Gunnar Reinius and Petr Vopatek ..........1333–1345

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Sludge Reaeration in Two-Step Nitrification

W. Bailey, W. White, C. Wilber, T. E. Wilson and R. Bizzarri ..........1347–1358

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Operation of the Soreq Wastewater Treatment Plant with a Single-Stage Nitrification-Denitrification Activated Sludge System

G. Arueste, D. Farchill, M. Goldstein and Y. Gruber ..........1359–1372

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Full-Scale Experiences with Biological Phosphorus Removal at the Wastewater Treatment Plants of West Berlin

R. Boll, R. Kayser, A. Peter and F. Sarfert ..........1373–1387

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A Critical Look into the Deviation of Full Scale Performance from Design Expectations

R. Zaloum ..........1389–1402

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Optimisation of Aeration Efficiency: A Design Procedure for Secondary Treatment Using a Hybrid Aeration System

V. K. Thomas, B. Chambers and W. Dunn ..........1403–1419

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Experiences in Field Testing a Variety of Aeration Equipment in Sweden and in the U.S.A. by Offgas Analysis

D. T. Redmon, W. C. Boyle and B. G. Hellstrom ..........1421–1429

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Sewage Sludge Disposal in Southern California, U.S.A

William F. Garber ..........1431–1440

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Recent Advances in Mechanical Dewatering of Digested Sludge

Earl W. Knight ..........1441–1446

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Full-Scale Experience with Sludge Treatment at the Vienna Sewage Works

Peter Thomas Ruggenthaler ..........1447–1451

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System Design and Full-Scale Plant Study on a Drying-Incineration System for Sewage Sludge

S. Sakai, M. Hiraoka, N. Takeda and I. Ohhama ..........1453–1466

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Conversion of Sludge to Oil: A Novel Approach to Sludge Management

H. W. Campbell and T. R. Bridle ..........1467–1475

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Operational Aspects of Doha South Sewage Treatment Works

P. G. Holmes ..........1477–1488

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The Mersey Basin Campaign—The Technical Challenge

B. Alexander and E. Harper ..........1489–1498

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River Basin Management—A Water Company Perspective

J. Carter ..........1499–1500

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River Basin Management in Scotland

D. Hammerton ..........1501–1508

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River Basin Management in Northern Ireland

David Logan ..........1509–1515

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Marine Treatment

P. N. Paul and F. N. Midmer ..........1517–1526

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The Government’s Proposals for the Restructuring and Privatisation of the Water Authorities in England and Wales

P. N. Bristow ..........1527–1530

Abstract | Full Text PDF