Resilience measure: Rainwater disconnection


Rainwater disconnection, i.e. the separation of the sewage system from the rainwater discharge system, is also a solution to prevent sewer flooding. In particular, the two systems can be dimensioned to fit their respective nominal discharges. Rainwater disconnection is a frequent strategy in Water Sensitive Urban Design (WSUD), and also part, in the U.S., of the LID (Low Impact Development) and Green Infrastructure initiatives.
(Staub M. and Moreau-Le Golvan Y., 2012, p. 28)

Co-benefits and impacts

The amount of waste water transported to the waste water treatment plant is reduced in case of combined sewer systems. But rainwater disconnection can be a cost-intensive measure and needs to be integrated in urban planning and / or renewal.
(Staub M. and Moreau-Le Golvan Y., 2012, p. 28)

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Drain and Sewer

Last modified: Sept. 20, 2016, 6:55 a.m.