Effect of ph and ionic environment changes on interparticle interactions affecting activated sludge flocs: A rheological approach

Environmental Technology (United Kingdom)

Volumn 24, Issue 8, 2003, Pages 971-978

  Tixier, N ^a   Guibaud, G ^a   Baudu, M ^a  

^a UNIVERSITY OF LIMOGES   (France)

Author keywords

Activated sludge; Equilibrium viscosity; Interparticle interactions; Rheology

Indexed keywords

ASSOCIATION REACTIONS; CALCIUM CHLORIDE; ELECTROSTATICS; POSITIVE IONS; RHEOLOGY; SODIUM CHLORIDE; SURFACE CHARGE; VISCOSITY; ZETA POTENTIAL;

ACTIVATED SLUDGE; ACTIVATED SLUDGE FLOCS; CHLORIDE CONCENTRATIONS; ELECTROSTATIC CHARGES; INFLUENCE OF ENVIRONMENTAL CHANGES; INTER-PARTICLE INTERACTION; LINEAR CORRELATION; RHEOLOGICAL BEHAVIOUR;

PARTICLE INTERACTIONS;

ANION; CALCIUM CHLORIDE; CATION; SODIUM CHLORIDE;

ACTIVATED SLUDGE; FLOC; PH; RHEOLOGY;

ACTIVATED SLUDGE; ARTICLE; CONCENTRATION (PARAMETERS); CONTROLLED STUDY; CORRELATION ANALYSIS; ENVIRONMENTAL CHANGE; FLOCCULATION; FLOW KINETICS; IONIC STRENGTH; MOLECULAR INTERACTION; PH MEASUREMENT; SURFACE CHARGE; VISCOSITY; ZETA POTENTIAL;

EID: 0141516171     PISSN: 09593330     EISSN: 1479487X     Source Type: Journal    
DOI: 10.1080/09593330309385635     Document Type: Article

References (29)

1. Zita A. and Hermansson M., Effects of ionic strength on bacterial adhesion and stability of floes in a wastewater activated sludge system. Appl. Environ. Res., 60, 3041-3048 (1994).
2. Cousin C.P. and Ganczarczyk J.J., Effect of calcium ion concentration on the structure of activated sludge flocs. Environ. Technol., 20, 1129-1138 (1999).
3. Mikkelsen L.H. and Keiding K., The shear sensitivity of activated sludge: an evaluation of the possibility for a standardised floc strength. Water Res., 36, 2931-2940 (2002).
4. Urbain V., Block J.C. and Manem J., Bioflocculation in activated sludge: an analytic approach. Water Res., 27, 829-838 (1993).
5. Sanin P. and Vesilind P.A., Bioflocculation of activated sludge: the role of calcium ions and extracellular polymers. Environ. Technol., 21, 1405-1412 (2000).
6. Sobeck D.C. and Higgins M.J., Examination of three theories for mechanisms of cation-induced bioflocculation. Water Res., 36, 527-538 (2002).
7. Sponza D.T., Extracellular polymer substances and physicochemical properties of flocs in steady-and unsteady-state activated sludge systems. Process Biochem., 9, 983-998 (2002).
8. Bruus J.H., Nielsen P.H. and Keiding K., On the stability of activated sludge flocs with implications to dewatering. Water Res., 26, 1597-1604 (1992).
9. Keiding K. and Nielsen P.H., Desorption of organic macromolecules from activated sludge: effect of ionic composition. Water Res., 31, 1665-1672 (1997).
10. Mikkelsen L.H., Gotfresen A.K., Agerbaek ML., Nielsen P.H. and Keiding K., Effects of colloidal stability on clarification and dewatering of activated sludge. Water Sci. Technol., 34, 449-457 (1996).
11. Liao B.Q., Allen D. G., Leppard G. G., Droppo I.G. and Liss S.N., Interparticle interactions affecting the stability of sludge floes. J. Colloid Interface Sci., 249, 372-380 (2002).
12. Derjaugin B. W. and Landau L., Theory of the stability of strongly charged lyophobic sols and of the adhesion of strongly charged particles in solution of electrolytes. Acta Physiochim., 14, 633-662 (1941).
13. Verwey E. J. W. and Overbeek J. G., Theory of the Stability of Lyophobic Colloids. Elsevier, Amsterdam, The Netherlands. (1948).
14. Mikkelsen L.H., The shear sensitivity of activated sludge-Relations to filterability, rheology and surface chemistry. Colloids and Surfaces, 182, 1-14 (2001).
15. Liao B.Q., Allen D.G., Leppard G.G., Droppo I.G. and Liss S.N., Surface properties of sludge and their role in bioflocculation and settleability. Water Res., 35,339-350 (2001).
16. Biggs C.A. and Lant P.A. Activated sludge flocculation: on-line determination of floc size and the effect of shear. Water Res., 34, 2542-2550 (2000).
17. Chaignon V., Lartiges B.S. and El Samrani A., Evolution of size distribution and transfer of mineral particles between flocs in activated sludges: an insight into flocs exchange dynamics. Water Res., 36, 676-684 (2002).
18. Lotito V., Spinosa L., Mininni G. and Antonaci R., The rheology of sewage sludge at different steps of treatment. Water Sci. Technol., 36, 79-85 (1997).
19. Dagot C., Pons M. N., Casellas M., Guibaud G., Dollet P. and Baudu M., Use of image analysis and rheological studies for the control of filamentous bacteria: application in SBR reactor. Water Sci. Technol., 43, 27-33 (2001).
20. Dentel S. K., Abu-Orf M. M. and Walker C. A., Optimization of slurry flocculation and dewatering based on electrokinetic and rheological phenomena. Chem. Eng. J., 80, 65-72 (2000).
21. Yen P.S., Chen L.C., Chien C.Y., Wu R.M. and Lee D.J., Network strength and dewaterability of flocculated activated sludge. Water Res., 36, 539-550 (2002).
22. Forster C.F., Preliminary studies on the relationship between sewage sludge viscosities and the nature of the surfaces of the components particles. Biotechnol. Lett., 12, 707-712 (1981).
23. Forster C.F., Sludge surfaces and their relation to the rheology of sewage sludge suspensions. J. Chem. Technol. Biotechnol, 32, 799-807(1982).
24. Forster C.F., Bound water in sewage sludges and its relationship to sludge surfaces and sludge viscosities. J. Chem. Technol. Biotechnol, 33, 76-84 (1983).
25. Qualité de l'eau. Tome 2, 2ème édition., NF T 90-105-2 AFNOR, Paris, France. (1997).
26. Lee C.H. and Liu J.C., Sludge dewaterability and floc structure in dual polymer conditionning. Adv. Environ. Res., 5, 129-136 (2001).
27. Vesilind P.A., Capillary suction time as a fundamental measure of sludge dewaterability. J. Water Pollut. Control Fed., 60, 215-220 (1988).
28. Forster C. F., The surface of activated sludge particles in relation to their settling characteristics. Water Res., 2, 767-776 (1968).
29. Sanin F. D., Effect of solution physical chemistry on the rheological properties of activated sludge. Water SA., 28, 207-211 (2002).