Abrégé

This invention relates to an apparatus and method for the treatment of effluent from agricultural anaerobic digesters or other processes. In the preferred embodiment, effluent from a tank is pumped to distribution channels, allowing effluent to overflow and trickle on to filtration media. A portion of the liquid can continue past the channels and return to the tank. The filtration media creates enhanced gas exchange and an environment that promotes the growth of microbes with the desired biological activities. A recirculation leg allows a portion of the pumped liquid to promote the circular flow of liquids in the tank, which accumulates suspended solids at the center of the bottom of the tank.

Classes IPC  ?

• C02F 3/10 - GarnissagesRemplissagesGrilles
• C02F 3/24 - Procédés par les boues activées avec une aération par chute libre ou pulvérisation
• C02F 3/02 - Procédés aérobies