The process starts with the WesTech RapiSand™ ballasted flocculation system. In the first section, raw water is mixed with coagulant. Two flocculation tanks follow, where coagulated water is mixed with polymer and microsand. The polymer binds the microsand grains and the flocculated particles.
Next is the clarification section where the ballasted floc settles, and the clarified water passes up through tube settlers.
In the final filtration stage, the Microfloc™ mixed media filter system captures any floc particles by running through a filter bed containing three media layers of varying size and specific gravity. The bed removes turbidity, suspended solids, color, iron, and manganese. The result is superior quality finished water.