Lesson 1, Topic 1
In Progress


Isolate contaminants; avoid their distribution and withdrawal by suction into water off-takes

  • Natural Processes
    • In storage, separation and sequestration of heavy metals, chemicals, soil particles, and organic matter naturally occurs through adsorption, flocculation, precipitation, and settling, then incorporation into biofilms and sediment
  • Active Processes
    • Avoid re-suspending sediments by using calming inlets to tanks
    • Position outlet at least 4 inches (10 cm) above bottom of tank
    • Position smart outlets and use floating collared offtakes to draw outlet water from the cleanest strata of the tank, several inches below the top of the water level