Vortex Valves For Stormwater Regulation: A Classic Solution To A Recent Dilemma

by R. Rivet, J. Cigana, M. Couture

Stormwater flows have historically been considered as harmless. Recent studies have shown that these flows cannot be dismissed as easily. Chebbo (1992) and Marsalek et al., (1997) have shown that stormwater is a source of diffuse pollution with a high source of suspended solids (SS), adsorbed hydrocarbons (HC) and nutrient loads (N, P, etc.). All these factors influence the quality of the receiving body of water.

Since 1994, the USEPA has enforced stringent new rules concerning stormwater. Here, in Canada, the same move toward legislation is felt. Some municipalities require that stormwater flowrates are controlled and perhaps even treated. This article covers the utilization of the HYDROVEX® Vortex Valve (VHV) as a means to control and regulate stormwater flowrates.