Water Science and Technology

Volume 36 Number 4

Contents

1–13

The density of particle aggregates

John Gregory

15–23

Particle size distributions in treatment processes: theory and practice

Desmond F. Lawler

25–32

Coagulation as a structure-forming separation process in water and wastewater treatment

Zbysaw Dymaczewski, Edward S. Kempa and Marek M. Sozanski

33–40

Determination of aggregation and breakup constants during flocculation

Johannes Haarhoff and Hannes Joubert

41–48

The structure of hydrous flocs prepared by batch and continuous flow water treatment systems and obtained by optical, electron and atomic force microscopy

A. Cornelissen, M. G. Burnett, R. D. McCall and D. T. Goddard

49–56

A conceptual view of floc structure in the sweep floc domain

D. H. Bache, C. Johnson, J. F. McGilligan and E. Rasool

57–68

Floc agglomeration and structuration by a specific talc mineral composition

A. Bidault, F. Clauss, D. Helaine and C. Balavoine

69–75

Collision efficiency factor in brownian coagulation (Br) including hydrodynamics and interparticle forces

Han Mooyoung, Lee Hyungki, Desmond F. Lawler and Choi Sangil

77–84

Simulating the effect of blanket characteristics on the floc blanket clarification process

Richard Head, Jem Hart and Nigel Graham

85–91

Flocculation in presence of organic macromolecules of natural water and secondary effluents

Nava Narkis and Menahem Rebhun

93–101

Effect of properties of polyelectrolytes on their interaction with particulates and soluble organics

M. Lurie and M. Rebhun

103–110

Realistic coagulation mechanisms in the use of aluminium and iron(III) salts

István Licskó

111–118

Algal cells and coagulation, flocculation and sedimentation processes

A. J. H. Pieterse and A. Cloot

119–126

Some effects of particle size in separation processes involving colloids

Charles R. O'Melia, Melinda W. Hahn and Cheng-Tyng Chen

127–134

Fuzzy control of coagulation reaction through streaming current monitoring

J. C. Liu and M. D. Wu

135–142

Control of coagulation process by dual wavelength article analyzer

Norihito Tambo, Yoshihiko Matsui, Ken-ichi Kurotani, Masakazu Kubota, Hirohide Akiyama, Tokio Ohto, Yasushi Zaitsu and Haruo Itoh

143–149

Particle counters as tools for managing Cryptosporidium risk in water treatment

Tom Hall and Brian Croll

151–158

Particle size analysis in primary and secondary waste water effluents

U. Neis and A. Tiehm

159–165

Particle size distribution in an efluent from an advanced primary treatment and its removal during filtration

H. Landa, A. Capella and B. Jiménez

167–175

Particle size analysis and sedimentation properties of activated sludge flocs

Dieter Hilligardt and Erhard Hoffmann

177–189

The role of particle size and density in dissolved air flotation and sedimentation

A. Vlaki, A. N. van Breemen and G. J. Alaerts

191–198

The use of particle monitoring in the performance optimisation of conventional clarification and filtration processes

G. Standen, P. J. Insole, K. J. Shek and R. A. Irwin

199–205

An approach to particulate matter transfer studies in littoral zones of lakes with changing morphometry

Boris S. Shteinman and Arkadi S. Parparov

207–215

Influence of particle size and size distribution in granular bed filtration and dynamic microfiltration

R. Ben Aim, S. Vigneswaran, H. Prasanthi and V. Jegatheesan

217–224

Particle size distribution and wastewater filter performance

Iris Kaminski, Nicolae Vescan and Avner Adin

225–230

Particle counts and size distribution in system design for removal of turbidity by granular deep bed filtration

S. Hatukai, Y. Ben-Tzur and M. Rebhun

231–237

Model calibration of deep-bed filtration based on pilot-scale treatment of secondary effluent

Semion Shandalov, Alexander Yakirevich, Asher Brenner, Gideon Oron and Menahem Rebhun

239–247

Particle separation, solids budgets and headloss development in different biofilters

Markus Boller, Daniel Kobler and Gerhard Koch

249–258

Removal of different kinds of particles in deep bed filters consisting of permeable synthetic collectors (PSC)

R. Gimbel and A. Nahrstedt

259–267

Particle removal in different filtration systems for tertiary wastewater treatment - a comparison

Daniel Kobler and Markus Boller

269–277

Activated sludge process control via particle monitoring

Ashifa Jiwani, Nigel J. D. Graham and Martin C. Day

279–286

Laboratory studies on enhancement of granulation in the anaerobic sequencing batch reactor

Randall A. Wirtz and Richard R. Dague

287–291

Influence of ultrasonic field on structure and parameters of sewage sludge for dewatering process

January B. Bien, Edward S. Kempa and Jurand D. Bien

293–306

Change of particle structure of sewage sludges during mechanical and biological processes with regard to the dewatering result

Thomas Nellenschulte and Rolf Kayser

307–312

On-line measurements of settling characteristics in activated sludge

Michael R. Rasmussen and Torben Larsen

313–320

Characterization of activated sludge flocs structure

D. Snidaro, F. Zartarian, F. Jorand, J.-Y. Bottero, J.-C. Block and J. Manem