Wetland Filters are used for purification of wastewater. Wastewater is pre-treated in precipitation tanks and then pumped to wetland filters. Through Wetland Filters, wastewater is treated by being drained through filter material, which is filled with naturally occurring microorganisms on plant roots and grains of sand. After the purification process, wastewater can be led to streams, ditches, drains etc.
Tunetanken Wetland Filters meet the requirements of SO purification class (increased requirement for reduction of organic material) and O purification class (reduction of organic material). In addition of phosphorous removal to the system, it will meet the requirement of SOP purification class (increased requirement for reduction of organic material as well as nitrification and reduction of phosphorous) and OP purification class (reduction of organic material and reduction of phosphorous).