Biblio

G. M. Ochieng and Otieno, F. A. O., “Verification of Wegelin’s design criteria for horizontal flow roughing filters (HRFs) with alternative filter material”, Water SA, pp. p. 105-109 : 2 fig., 3 tab., 2006.

J. P. Rajapakse, “Pebble matrix filtration in Papua New Guinea”, Waterlines, an international journal of water, sanitation and waste, pp. p. 12-14 : 2 fig., 2003.

T. O. Okurut, A pilot study on municipal wastewater treatment using a constructed wetland in Uganda. Rotterdam, The Netherlands: A.A. Balkema, 2000, p. xii, 171 p. : fig., tab.

M. J. D. Graham and Luxton, P. J., “Preliminary evaluation of natural fabrics in slow sand filtration”, Aqua : journal of water supply research and technology, 1998.

B. J. Lloyd, Woudneh, M. B., and Stevenson, D., “The behaviour of 2,4-D as it filters through slow sand filters”, Aqua : journal of water supply research and technology, pp. p. 144-149 : 6 fig., 3 tab., 1997.

C. D. Swartz, van der Walt, C. J., and van der Merwe, P. J., Evaluation of direct series filtration for the treatment of South African surface waters, vol. no. 354/1/97. Pretoria, South Africa: Water Research Commission, WRC, 1997, p. xiv, 50 p. + annexes (98 p.) : fig., photogr., tab.

F. Solsona and Kariuki, A. W., Report to the Water Research Commission. Part 1 on a dynamic cross-flow sand filter for rural water treatment. Part 2 on a technical guide for a dynamic cross-flow sand filter, vol. no. 539/1/97. Pretoria, South Africa: Water Research Commission, WRC, 1997, p. vii, 77 p. : fig., photogr., tab.

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.

B. J. Lloyd, Clarke, B. A., Crompton, J. L., and Major, I. P., “Cleaning of upflow gravel prefilters in multistage filtration water treatment plants”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 391-401 : 10 fig., 1 tab.

J. T. Visscher, J. M., L., G. C., G., and Ochoa, A. E., “Comparison of horizontal and upflow roughing filtration”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 341-348 : 2 fig., 6 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, Graham, M. J. D., Clarke, B. A., and Jones, C. J., “Effect of reduced depth, fabric-protected slow sand filters on treated water quality”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 233-243 : 7 fig., 6 tab.

D. D. Mara and Oragui, J. I., Enumeration of rotaviruses in tropical wastewaters, vol. no. 10. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. ix, 55 p. : tab.

CREPA -Ouagadougou, BF, Centre Regional pour l'Eau Potable et l'Assainissement a Faible Cout, “La deferrisation des eaux de forage : synthese des techniques experimentees avec succes au CREPA”, vol. no. 1. Centre Regional pour l'Eau Potable et l'Assainissement a Faible Cout (CREPA), Ouagadougou, Burkina Faso, p. 68 p. + annexes (31 p.) : 16 fig., 9 tab., 1996.

G. K. Folkard, Sutherland, J. P., and Al-Khalili, R., “Natural coagulants : a sustainable approach”, in Sustainability of water and sanitation systems : proceedings of the 21st WEDC conference, Kampala, Uganda, 4-8 September 1995, 1996, pp. P. 63-65.

J. T. Visscher, J. M., L., and G. C., G., “Performance evaluation of dynamic roughing filtration”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 349-358 : 5 fig., 3 tab.

D. D. Mara, Silva, S. A., and de Oliveira, R., Performance of waste stabilization ponds in Northeast Brazil, vol. no. 9. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. ix, 139 p. : fig., tab.

M. R. Collins, Eighmy, T. T., Fenstermacher, J. M., and Spanos, S. K., “Using granular media ammendments to enhance NOM removal”, Journal American Water Works Association, pp. p. 48-61 : 9 fig., 7 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.

C. Dean and Horan, N., Applications of UASB technology in Mauritius, vol. no. 7. Leeds, UK: University of Leeds, Department of Civil Engineering, 1995, p. xi, 91 p. : fig., tab.

A. Rachwal, Bauer, M., Buchanan, B., Colbourne, J., Foster, D., Goodman, N., Kay, A., and Sanders, T., “The GAC/slow sand filter sandwich : from concept to commissioning”, Water supply : the review journal of the International Water Supply Association, pp. p. 137-142: 9 fig., 1995.

J. P. Padmasiri, Fonseka, W. S. C. A., Jayalath, J. M. J. C., Kulasooriya, S. A., and Jayaweradena, B. P. A., “Horizontal roughing filter as pretreatment system for Algae Synedra”, Water supply : the review journal of the International Water Supply Association, pp. p. 201-204: 2 fig., 2 tab., 1995.

G. J. Alaerts, Petrusevski, B., and van Breemen, A. N., “Optimisation of coagulation conditions for direct filtration of impounded surface water”, Aqua : journal of water supply research and technology, pp. p. 93-102: 8 fig., 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.

R. C. Cheng, Wang, H. - C., Beuhler, M. D., and Liang, S., “Enhanced coagulation for arsenic removal”, Journal American Water Works Association, pp. p. 79-90: 8 fig., 11 tab., 1994.