ACT® treats the wastewater in one to three steps depending on the circumstances at your property.
In the first step, ProACT®, microorganisms are degrading the sludge. Thanks to special structures in the tank, there is a lot of surface for microorganisms to form biofilm (their home). The oxygen level in the tank is low. These factors combined result in degradation of the sludge which minimizes the need for sludge removal. Approximately one sludge removal every 10th year is needed.
From ProACT® the wastewater is pumped to InterACT® where it is exposed to other types of microorganisms and to natural aquatic plants whose root systems also make up a good environment for the microorganisms. The plants as well as the microorganisms feed on nutrients in the wastewater.
In some cases, an additional treatment step, ReACT®, is required to achieve extra reduction of phosphorus to prevent eutrophication. In ReACT® phosphorus is bound to a lime material. When the filter material is saturated with phosphorus it can be spread on farmland as a fertilizer.
ACT® is a very robust system requiring electricity only to power a water pump and an air pump. A micro-computer together with a static level meter in ensures stable operation and monitoring of the system.