Biblio

C. C. Dorea, Clarke, B. A., and Bertrand, S., “Performance of a multi-stage filtration plant after its handover ”, Water policy : official journal of the World Water Council, pp. p. 559-570 : 8 fig. , 2004.

J. B. Vimos Astudillo, “Efecto de la velocidad de filtración en la operación de clarificadores de filtración gruesa ascendente en capas para aguas superficiales provenientes del páramo de baja turbiedad y baja temperatura”. Universidad del Valle, Facultad de Ingenieria, Cali, Colombia, p. 180 p. ,tables, graphics, photos, 2003.

N. J. A. Mahmoud, Anaerobic pre-treatment of sewage under low temperature (15 C) conditions in an integrated UASB-digester system. Wageningen, The Netherlands: Agricultural University Wageningen, 2002, p. 128 p. : fig., tab.

G. B. Oxfam - Oxford, “Oxfam guidelines for water treatment in emergencies”. Oxfam, Oxford, UK, p. 45 p. : 4 fig., 2001.

T. A. Elmitwalli, Anaerobic treatment of domestic sewage at low temperature. Wageningen, The Netherlands: Agricultural University Wageningen, 2000, p. 113 p. : fig., tab.

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.

C. Polprasert and Poh-Eng, L., Constructed wetlands for wastewater treatment and resource recovery, vol. no. 41. Bangkok, Thailand: Environmental Sanitation Information Center, ENSIC, 1998, p. 120 p. + 6 p. app. : fig., tab.

L. J. M., Wegelin, M., and G. C., G., “La filtracion gruesa en el tratamiento de agua de fuentes superficiales”, vol. no. 4/98. SKAT (Swiss Centre for Development Cooperation in Technology and Management), St. Gallen, Switzerland, p. vi, 170 p. : fig., photogr., tab., 1998.

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.

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.

M. Wegelin, Surface water treatment by roughing filters : a design, construction and operation manual, vol. no. 2/96. St. Gallen, Switzerland: SKAT (Swiss Centre for Development Cooperation in Technology and Management), 1996, p. 163 p. : fig., tab.

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.

K. N. Scott, Green, J. F., Do, H. D., and McLean, S. J., “Arsenic removal by coagulation”, Journal American Water Works Association, pp. p. 114-126: 5 fig., 10 tab., 1995.

J. Arundel, Sewage and industrial effluent treatment : a practical guide. Oxford, UK: Blackwell Science, 1995, p. xiii, 242 p.: fig., tab.

C. P. Gerba, Straub, T. M., Rose, J. B., Karpiscak, M. M., Foster, K. E., and Brittain, R. G., “Water quality study of graywater treatment systems”, Water resources journal, pp. p. 78-84: 4 fig., 5 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.

B. J. Lloyd, Visscher, J. T., and G. C., G., “Overcoming water quality limitations with the multi-barrier concept : a case study from Colombia”, in Slow sand filtration : an international compilation of recent scientific and operational developments, 1994, pp. P. 47-60: fig., 3 tab.

L. J. M., “Performance evaluation of dynamic roughing filtration”, vol. no. 137. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. vi, 83 p.: 30 fig., 11 tab., 1994.

H. Brix, “Use of constructed wetlands in water pollution control : historical development, present status, and future perspectives”, Water science and technology, pp. p. 209-223 : 9 fig., 1994.

J. T. Visscher, G. C., G., and Fernandez, J., “Comparative study of different pre-treatment alternatives”, Aqua : journal of water supply research and technology, pp. p. 337-346: 7 fig., 5 tab., 1993.

J. P. Kramer and Wouters, J. W., “DynaSand filtration for drinking-water production”, Aqua : journal of water supply research and technology, pp. p. 97-104: 10 fig., 5 tab., 1993.

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

L. Rietveld and Matsinhe, N., Pilot plant studies on slow-sand-filtration and up-flow-roughing-filtration in Mozambique, vol. no. 44. Delft, The Netherlands: Delft University of Technology, Department of Civil Engineering, 1993, p. v, 46 p. : fig., tab.