In urban areas, storm water picks up pollution mainly from impervious surfaces and conveys it through pipes either directly to recipients or to a wastewater treatment plant. An alternative to this approach is ecological storm water management, where polluted storm water is treated and volumes are reduced through a variety of techniques that include infiltration, retention/detention, bio filters, and structural controls. THE ABC FOR SUSTAINABLE CITIES UNEP / UN HABITAT / FIDIC / GI-REC Based…
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