activated sludge flocculation on line determination of floc

Activated sludge flocculation: on-line determination of floc

This paper presents a technique which enables on-line monitoring of activated sludge flocculation. The usefulness of this technique is demonstrated by investigating the effect of shear on steady-state floc sizes. The technique is based on a method developed to investigate flocculation of inorganic particles.

Nov 1, 2004 · Introduction. The activated sludge process for treatment of wastewater depends on good separation properties of the sludge flocs but sometimes it fails due to deflocculation. This gives poorer effluent quality as well as a decreased dewaterability ( Bruus et al., 1992; Mikkelsen et al., 1996 ).

Activated sludge flocculation: on-line determination of floc

This paper presents a technique which enables on-line monitoring of activated sludge flocculation. The usefulness of this technique is demonstrated by investigating the effect of shear on steady-state floc sizes. The technique is based on a method developed to investigate flocculation of inorganic particles.

Activated sludge flocculation: direct determination of the

The main aim of this study was to get a comprehensive and unique insight into the floc properties of activated sludge and to assess the relative impact of chemical and physical parameters. A variety of sludges from full scale treatment plants with different settling properties were characterised.

Activated sludge flocculation: direct determination of the

The effect of calcium on activated sludge flocculation dynamics is investigated using a unique experimental technique. The technique allows on-line analysis of the size of activated sludge flocs during flocculation and provides valuable insight into the mechanisms of flocculation.

Flocculation of activated sludge flocs by stimulation of the

This paper presents a technique which enables on-line monitoring of activated sludge flocculation. The usefulness of this technique is demonstrated by investigating the effect of shear on steady-state floc sizes. The technique is based on a method developed to investigate flocculation of inorganic particles. Samples of activated sludge are sonicated for 3 min at 50 W to produce the necessary

Activated sludge flocculation: direct determination of the

PMID: 12926675 Abstract Activated sludge flocs are a flocculated mass of microorganisms, extracellular polymeric substances (EPS) and adsorbed organic and inorganic material.

Activated Sludge Flocculation: On-Line Determination of Floc

ACTIVATED SLUDGE FLOCCULATION: ON-LINE DETERMINATION OF FLOC SIZE AND THE EFFECT OF SHEAR C. A. BIGGSM and P. A. LANT*M The Advanced Wastewater Management Centre, Department of Chemical Engineering, The University of Queensland, Queensland 4072, Australia (First received 1 June 1999; accepted 1 December 1999)

Activated sludge flocculation: Direct determination of the

Abstract The effect of calcium on activated sludge flocculation dynamics is investigated using a unique experimental technique. The technique allows on-line analysis of the size of activated sludge flocs during flocculation and provides valuable insight into the mechanisms of flocculation.

(PDF) Characterisation of floc size, effective density and

This paper presents a technique which enables on-line monitoring of activated sludge flocculation. The usefulness of this technique is demonstrated by investigating the effect of shear on steady-state floc sizes. The technique is based on a method developed to investigate flocculation of inorganic particles. Samples of activated sludge are sonicated for 3 min at 50 W to produce the necessary

Simulation of Floc Size Distribution in Flocculation of

Some practical drawbacks encountered by these methods are that they: (1) cannot be used on-line in a ?occulation experiment that proceeds, (2) are very time consuming, (3) do not cover the needed ?oc size range or (4) need dilution with electrolyte.

Using Digital Image Processing to Characterize Flocculation

Optimal hydraulic shear strength and mechanism of activated sludge floc re-growth after breakage Activated sludge floc structure during aerobic digestion Shear-induced flocculation: The evolution of floc structure and the shape of the size distribution at steady state

Flocculation model of cohesive sediment using variable

This paper presents a technique which enables on-line monitoring of activated sludge flocculation. The usefulness of this technique is demonstrated by investigating the effect of shear on steady-state floc sizes. The technique is based on a method developed to investigate flocculation of inorganic particles.

Simultaneous determination of activated sludge floc size

The activated sludge floc size distribution (FSD) is investigated by using different techniques and the results are compared against each other in order to gain insight into the FSD characteristics, as well as to detect the limitations of each measurement technique.