Biblio

M. Y. Saidam and Butler, D., “Algae removal by horizontal flow rock filters”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 327-339 : 8 fig., 2 tab.

G. J. Alaerts, Buiteman, J. P., and Ahsan, T., “Direct horizontal-flow roughing filtration. Part I : optimisation of process parameters”, Aqua : journal of water supply research and technology, pp. p. 262-271 : 8 fig., 3 tab., 1996.

B. J. Lloyd, Clarke, B. A., Jones, C. J., and Evans, H. L., “Water treatment by multistage filtration utilising gravel prefilters and fabric enhanced slow sand filters”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 313-326 : 12 fig., 2 tab.

D. H. Bache, Rasool, E., Ali, A., and McGilligan, J. F., “Floc character : measurement and role in optimum dosing”, Aqua : journal of water supply research and technology, pp. p. 83-92: 15 fig., 1 tab., 1995.

M. R. Collins, Cole, J. O., Westersund, C. M., and Paris, D. B., “Assessing roughing filtration design variables”, Water supply : the review journal of the International Water Supply Association, pp. p. SS 5.29 - 5.40: 9 fig., 11 tab., 1994.

M. Boller, “Filter mechanisms in roughing filters”, Aqua : journal of water supply research and technology, pp. p. 174-185: 17 fig., 1 tab., 1993.

J. S. Lang, Giron, J. J., Hansen, A. T., R. Trussell, R., and Hodges, W. E., “Investigating filter performance as function of the ratio of filter size to media size”, Journal American Water Works Association, pp. p. 122-130: 12 fig., 10 tab., 1993.

D. C. Moran, Moran, M. C., Cushing, R. S., and Lawler, D. F., “Particle behavior in deep-bed filtration. Part 1 : Ripening and breakthrough”, Journal American Water Works Association, pp. p. 69-81: 15 fig., 1 tab., 1993.

D. C. Moran, Moran, M. C., Cushing, R. S., and Lawler, D. F., “Particle behavior in deep-bed filtration. Part 2 : Particle detachment”, Journal American Water Works Association, pp. p. 82-93: 8 fig., 2 tab., 1993.

K. V. Ellis and Aydin, M. E., “A study of three slow sand filters at various flow rates with constant temperature”, Aqua : journal of water supply research and technology, pp. p. 88-96: 5 fig., 4 tab., 1993.

G. B. Public Hea London, “Performance of fabric protected slow sand filters treating poor quality river water”. Imperial College, Department of Civil Engineering, Public Health and Water Resea, London, UK, p. 76 p.: fig., tab., 1989.