N. VERMA, R. REH AL & AL. J. RAO (1992) - "Scavenging toxic heavy métal ions from
industrial wastewaters - a survey" - Intem. J. Environmental Studies, 1993, Vol. 43, pp. 151159.
J.M. VIEIRA e SILVA, H. DOMINGUES & Ma E. MESQUITA (1992) - "Sequential
extraction of copper and zinc from sewage sludges. Use of organic solvents” - Intem J.
Environ. Anal. Chem., Vol. 51, pp. 109-112
W. W. WENZEL, M. A. POLLAK & W. E. H. BLUM (1991) - "Dynamics of heavy metals in
soils of a reed bed System" - Intem. J. Environ. Anal. Chem., Vol. 46, pp.41-52.
J. WIART (1993) - "Les différents procédés de stockage des boues d'épuration avant
valorisation en agriculture" - CNISF - Ademe, Pollutec 93, 5 p.
K.P. WILLIAMS (1992) - "Principles and application of physical particle séparation for
treatment of contaminated land" - Int. Conf. on Contamin.. Land Treatment Technology,
London, U.K., July 1992, pp. 113-128.
D.J. WILLIAMSON & G. WHEALE (1981) - "The influence of sludge storage on Chemical
conditioning costs" - Wat. Pollut. Control, 1981, pp. 529-536.
H. WILMS & J. SCHWEDES (1988) - "Comparative shear tests with ring shear tester and
Jenike shear tester" - Aufbereitungs Technik (1988) Nr.2, pp. 53-60.
S. WOMMEL & W. CALMANO (1992) - "Studies on séparation of heavy metals from acidic
solutions by foam fractionation with respect to an application on acidic soil extracts" - Acta
hydrochim. hydrobiol. 20 (1992) 5, 265-268.
H. XIAOMIN, L. CHUNBO, D. QIFU & D. JINLUN (1995) - "The use of polypropylene
fibre needlefelt in the filtration of minerai slurries" - Filtration & Séparation, Avril 1995, Vol.
32, N°,4, pp. 307-311.
R.H.YOON (1991) - "Hydrodynamic and Surface Forces in Bubble - Particle Interactions" -
Aufbereitungs Technik, 32 (1991) Nr.9, pp. 475-485.
245
industrial wastewaters - a survey" - Intem. J. Environmental Studies, 1993, Vol. 43, pp. 151159.
J.M. VIEIRA e SILVA, H. DOMINGUES & Ma E. MESQUITA (1992) - "Sequential
extraction of copper and zinc from sewage sludges. Use of organic solvents” - Intem J.
Environ. Anal. Chem., Vol. 51, pp. 109-112
W. W. WENZEL, M. A. POLLAK & W. E. H. BLUM (1991) - "Dynamics of heavy metals in
soils of a reed bed System" - Intem. J. Environ. Anal. Chem., Vol. 46, pp.41-52.
J. WIART (1993) - "Les différents procédés de stockage des boues d'épuration avant
valorisation en agriculture" - CNISF - Ademe, Pollutec 93, 5 p.
K.P. WILLIAMS (1992) - "Principles and application of physical particle séparation for
treatment of contaminated land" - Int. Conf. on Contamin.. Land Treatment Technology,
London, U.K., July 1992, pp. 113-128.
D.J. WILLIAMSON & G. WHEALE (1981) - "The influence of sludge storage on Chemical
conditioning costs" - Wat. Pollut. Control, 1981, pp. 529-536.
H. WILMS & J. SCHWEDES (1988) - "Comparative shear tests with ring shear tester and
Jenike shear tester" - Aufbereitungs Technik (1988) Nr.2, pp. 53-60.
S. WOMMEL & W. CALMANO (1992) - "Studies on séparation of heavy metals from acidic
solutions by foam fractionation with respect to an application on acidic soil extracts" - Acta
hydrochim. hydrobiol. 20 (1992) 5, 265-268.
H. XIAOMIN, L. CHUNBO, D. QIFU & D. JINLUN (1995) - "The use of polypropylene
fibre needlefelt in the filtration of minerai slurries" - Filtration & Séparation, Avril 1995, Vol.
32, N°,4, pp. 307-311.
R.H.YOON (1991) - "Hydrodynamic and Surface Forces in Bubble - Particle Interactions" -
Aufbereitungs Technik, 32 (1991) Nr.9, pp. 475-485.
245