Equalization tank before the process with anammox bacteria – made of vitrified steel. Dimensions: D=10 m, H=5 m. Equipped with 1 submerged mixer with 3 blades of D=300mm operating at 960 rpm and 3 kW motor, 3 floats, 1 ultrasonic level indicator to control the pumps. 2 pumps of 4.5 l/s at 5 m water column with 4.0 kW motor.

Anammox bacteria tank – made of vitrified steel. Dimensions: D=10 m, H=7 m. Equipped with 1 submerged mixer with 3 blades of D=300mm operating at 960 rpm and 3 kW motor, 3 floats, 1 ultrasonic level indicator to control the pumps. Sensors: dissolved air in water, pH, temperature and conductivity. 2 pumps of 11.5 l/s at 28 m water column with 7.5 kW motor. A steam diffusion system to control the temperature in the tank at a level of 30ºC. 1 transfer line up to 13 m3/day of flow from the anaerobic digesters, equipped with a flow meter and a flow control valve. pH and alkalinity adjustment system consisting of 1 caustic soda storage tank of 4,000 l, 2 pumps of 10 l/h. 3 pumping stations will be installed to direct the following flows: anammox bacteria recycling in the anammox bacteria tank, sludge to the anaerobic digesters and effluent to the equalization tank before the aerated membrane process. Each pumping station equipped with 2 pumps capacity 11.5 l/s at 28 m water column with 7.5 kW motor, floats for pump control.