Simple, low-energy nutrient removal in a small footprint
Removing nutrients and organics from sewage is a critical element of wastewater treatment. It’s one that uses over half of the energy demand in wastewater treatment.
During secondary treatment, bacteria metabolize these nutrients and organics – and need a flow of oxygen to get it done. Oxygen is typically pumped through diffusers to create bubbles. But most of the oxygen rises to the surface without being used and valuable energy is wasted.
At GE, we saw a new approach. GE’s ZeeLung is the simple solution for low-energy biological treatment.
ZeeLung MABR Features
- Simple - ZeeLung membranes are installed directly into existing bioreactor tanks, minimizing the impact on plant hydraulics and operations
- Low Energy – Oxygen is delivered at an efficiency 4X greater than fine bubble aeration, resulting in a significant energy savings
- Nutrient Removal – Increasing biomass inventory by supplementing a suspended growth system with attached growth enables nutrient removal
- Small Footprint – Nutrient removal and capacity expansion in existing bioreactor volumes, avoiding the need to construct new bioreactor tanks
MWRD Test GE Technology
With the goal of becoming energy neutral by 2023, the Metropolitan Water Reclamation District of Greater Chicago recently began a demonstration project to evaluate GE's new ZeeLung* Membrane Aerated Biofilm Reactor technology. The test is being performed at the district’s O'Brien Water Reclamation Plant in Skokie, Illinois, to prove ZeeLung’s ability to remove nutrients in the plant’s existing footprint and reduce the energy required for biological aeration by 40 percent.
This article details the results of the year-long demonstration of ZeeLung technology at the Metropolitan Water Reclamation District of Greater Chicago.
See how GE's innovative biological treatment, ZeeLung, offers 4x greater aeration efficiency while removing nutrients like nitrogen and phosphorous and organic pollutants from sewage.
Chicago MWRD began a demonstration project using GE's ZeeLung MABR, to increase the removal of nutrients in the existing plant footprint and reduce the energy required for biological aeration by 40%.
*Trademark of General Electric Company; may be registered in one or more countries