First Flush Diversion
Brett Martinson and Terry Thomas of the DTU School of Engineering ( who also did a study on inlet filtration ) have another interesting file on first flush diversion that you might want to take a look at.
First Flush Diversion Study
The DTU has studied rooftop turbidities from a good variety of roofing materials in several different countries over the last couple of years avis viagra. I will not get into the details but simply remind you that first flush is only one step in the process of removing sediment and does not make rainwater pure. Think of first flush diversion as rooftop particle removal, a first step in the process of making water ready for purification.