Activated sludge plants typically have 2 process bottlenecks that limit treatment capacity:

• Bioreactor capacity is limited by the tank volume and inventory of bacteria in the system. This constrains the amount of nutrient removal that the process can achieve.
• Secondary clarifier capacity is limited by the clarifier surface area and the settling characteristics of the mixed liquor.

zeeDENSE breaks through both bottlenecks by combining two proven intensification technologies – ZeeLung MABR & inDENSE continuous flow densification.

ZeeLung MABR intensifies nutrient removal in existing bioreactor tanks.

ZeeLung cassettes are immersed in the mixed liquor and support the growth of a biofilm that increases the inventory of nutrient removal bacteria in the system. The ZeeLung media “breathes” – transferring oxygen to the biofilm without the use of bubbles, which reduces energy and mitigates N2O emissions.

ZeeLung MABR intensifies nutrient removal in existing bioreactor tanks. ZeeLung cassettes are immersed in the mixed liquor and support the growth of a biofilm that increases the inventory of nutrient removal bacteria in the system. The ZeeLung media “breathes” – transferring oxygen to the biofilm without the use of bubbles, which reduces energy and mitigates N2O emissions. ZeeLung can deliver up to 50% capacity expansion while reducing aeration energy by up to 75% and mitigating greenhouse gas emissions.

inDENSE continuous flow densification intensifies secondary clarification.

inDENSE hydrocyclone technology uses gravimetric selection pressure to retain dense biomass & selectively waste less dense biomass, including filamentous bacteria. Waste activated sludge or mixed liquor is processed through the inDENSE system and the dense biomass is returned to the bioreactor while the less dense biomass is wasted from the process. The result is improved settling characteristics of the mixed liquor, which enables up to 50% intensification of secondary clarification.

zeeDENSE couples the synergies of ZeeLung MABR & inDENSE continuous flow densification. zeeDENSE is tailor made for the upgrade of activated sludge plants with modularity, process flexibility, and speed of implementation The combination of inDENSE with ZeeLung creates a wastewater technology more efficient than ever without having to increase your plant footprint.