Patent ID: 8545696
Filing Date: 2013-10-01
Classification: B01D,E03F,Y10T

Abstract:
1. A basin drainage system configured for use with a sediment/detention basin and configured to receive one of a fluid, of a particle laden fluid and of an immiscible fluid of different densities, the fluid drainage system for disposition within the basin and configured for draining less dense fluid from the top of the basin while avoiding discharge of one of denser particles and fluid and of denser fluid from the bottom of the basin by preferentially draining fluid from the top of the basin, the fluid drainage system comprising: a first conduit having a substantially continuous sidewall and positioned within or adjacent the basin for contact with the received fluid, the first conduit having a plurality of first apertures through a sidewall thereof, and a second conduit having a substantially continuous sidewall and positioned downstream of the first conduit, the second conduit having a plurality of second apertures through a sidewall thereof such that a chamber is formed between the first and the second conduits, the second conduit configured to be connected to a drainpipe in downstream flow communication with the second conduit, the drainpipe configured for delivering the drained fluid offsite and maintaining atmospheric pressure within the second conduit, wherein, the first and second apertures are sized and arranged relative to one another and configured to provide how conditions which preferentially drain fluid from the top of the basin and therefore minimize entry of denser particles and fluid into the fluid drainage system so at to maximize retention of denser particles and fluid within the basin.