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9th International Rainwater Catchment Systems Conference
"Rainwater Catchment: An Answer to the Water Scarcity of the Next Millennium."
Petrolina, Brazil - July 1999

Section 12: Posters

Paper 12.11

A First Flush Device for Rainwater Collected and Stored in Rural Cisterns

José Barbosa dos Anjos
EmbrapaSemi-Árido
Cx. Postal 23,CEP 56300-000 Petrolina-PE, Brasil
E-mail: jbanjos@cpatsa.embrapa,br

Abstract

In order to improve the quality of rainwater collected from roofs of rural buildings and storage in cisterns, a system composed of a collector tank, a siphon (T of PVC), a buoy and tubes was developed. The objective was to eliminate some of the impurities contained in the reception area.

The water collected from the first 4 millimeters of each rainfall, is deviated through a "by pass" together with the impurities and diverted into a collector tank, thus transporting all possible pollution and polluting agents.

PDF of full document (3pp, 200kb)


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