Waste water treatment plant with polyelectrolyte doser - activated by level detector before waste water pump

摘要

A waste water treatment plant has an upper vessel with a flocculation compartment fed with water and polyelectrolyte and a second compartment with two closable outlets in its floor, a filter bag held beneath each outlet by a sleeve, a lower vessel with a support grid for the filter bags and an outlet for filtered water, a pump feeding waste water from a reservoir to the flocculation compartment, and an electronic controller driving a polyelectrolyte doser in response to signals from a level detector in the reservoir and retarding the pump to deliver water to the flocculation compartment after polyelectrolyte. USE/ADVANTAGE - For garages and vehicle factories. The plant is simple and cheap.