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Found 14 results
Filters: Keyword is gravel  [Clear All Filters]
1998
Osola, M., «A few buckets more : reducing sand invasion and siltation in Angola», Waterlines, an international journal of water, sanitation and waste, pp. p. 28-29 : 2 boxes, 2 fig., 1 photgr., 1998.
1994
Collins, M.R., Cole, J.O., Westersund, C.M., y 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.
1988
Wegelin, M., «Roughing gravel filters for suspended solids removal», in Slow sand filtration : recent developments in water treatment technology, 1988, pp. P. 103-122: fig., tab.
Di Bernardo, L., «Upflow coarse-grained prefilter for slow sand filtration», in Slow sand filtration : recent developments in water treatment technology, 1988, pp. P. 123-140: fig., tab.
1987
UNICEF -Colombo, LK, «Iron removal plant : installation and maintenance manual». UNICEF Water, Environment and Sanitation Section, Colombo, Sri Lanka, p. 11 p.: tech. drwng, photogr., 1987.
Bucksteeg, K., «Sewage treatment in helophyte beds : first experiences with a new treatment procedure», Water science and technology, pp. p. 1-10 : 7 fig., 1987.
Kardile, J.N., Simple methods in water purification. Nasik, India: Foundation for Simplified Filters, 1987, p. 179 p.: fig., tab.
Ellis, K.V., «Slow sand filtration as a technique for the tertiary treatment of municipal sewages», Water research, pp. p. 403-410: tab., 1987.
Childers, L. y Claasen, F., «UNICEF's upward-flow water filter», Waterlines, an international journal of water, sanitation and waste, pp. p. 29-31: ill., 1987.
UNICEF Regional Office for Eastern and Southern Africa -Nairobi, KE, «The upward flow water filter». UNICEF Regional Office for Eastern and Southern Africa, Nairobi, Kenya, p. [5] p.: ill., 1987.
1985
Lloyd, B.J., Wheeler, D., Pardon, M., y Symonds, C.N., «Aspects of prefiltration concerned with the application of small scale slow sand filtration in rural communities». University of Surrey, Department of Microbiology, Guildford, UK, p. 112 p.: fig., tab., photogr., 1985.
1976
Merchant, N.M., «Construction of an intermittent water filter for villages in Southern Iran», Journal of Indian Water Works Association, pp. p. 177-179 : fig., tab., 1976.