overview

ZeeLung Overview

ZeeLung can maximize the processing capacity of existing storage tanks while also reducing energy consumption.

In secondary processing, bacteria metabolize nutrients and organic matter, while requiring oxygen flow to assist in this process. Oxygen is usually pumped in through a diffuser and forms bubbles. But most of the oxygen rises to the surface unused, wasting valuable energy. SUEZ has adopted a new method. The traditional solution requires building new storage tanks, while ZeeLung can improve the processing capacity of existing assets and reduce energy consumption. ZeeLung can achieve process enhancement and process resilience, ultimately expanding processing capacity, stabilizing low-temperature performance, and responding quickly to load changes.

ZeeLung can solve the following processing difficulties:

• Improve processing capability
• Increase the removal rate of ammonia
• Perform denitrification
• Realize biological phosphorus removal

advantage

The advantages of ZeeLung

• Process Intensification-The processing capacity and/or performance of existing storage tanks can be increased by up to 50%.
• Process elasticity-The attached growth biofilm can adapt to load changes and unstable conditions.
• Simple solution-The ZeeLung membrane box is installed in existing bioreactors without the need to build new storage tanks and can be quickly implemented.
• energy saving-The oxygen transfer efficiency is 4 times higher than that of microporous aeration, saving up to 50% energy.

Working principle

The working principle of ZeeLung

ZeeLung technology uses a breathable medium to transfer oxygen to the biofilm attached to the surface of the medium. Oxygen is transferred to the biofilm through diffusion rather than bubbles. Therefore, the energy consumption generated by oxygen transfer is four times lower than that of microporous aeration. Pollutants such as ammonia and organic matter diffuse from the bulk solution into the biofilm, and bacteria in the biofilm have the best conditions to remove them.

This product is a reinforcing medium whose yarn core supports multiple breathable filaments. This structure is called a 'core', which is both flexible and unbreakable. Multiple cores are encapsulated in top and bottom manifolds to form modules, which are then installed in steel frames to form membrane boxes. The membrane box is deployed in the mixed solution of the bioreactor. Low pressure air is delivered to the membrane box to transfer oxygen and mix the system.

Installing the ZeeLung membrane box into the activated sludge reactor can increase the total biomass in the system without increasing the concentration of the mixed solution. Therefore, under the condition of constant volume, the processing capacity of the reactor is improved.

Compared with traditional activated sludge and biofilm processes, the interaction between oxygen and pollutants in the ZeeLung system is different. Using ZeeLung, oxygen and substrate (such as ammonia and organic matter) enter the biofilm through reverse diffusion from opposite sides. This creates favorable conditions for the growth of nitrifying bacteria in biofilms.

This is because, compared to organic substrates, ammonia has higher diffusion into biofilms, and the dissolved oxygen content on the surface of the medium reaches its highest level. The advantageous growth of nitrifying bacteria and heterotrophic organisms means that ZeeLung biofilm can increase nitrification in activated sludge systems. Simultaneous nitrification and denitrification can be achieved by installing ZeeLung membrane boxes in hypoxic areas.

The ZeeLung membrane box can be directly deployed into existing storage tanks with minimal impact on existing equipment and operations. This makes ZeeLung an economically efficient multifunctional solution that helps improve factory performance.

casestudy

ZeeLung Case Study

Yorkville Bristol Health District

Yorkville Bristol Health District (YBSD) hasThe city of Yorkville, Illinois, with a population of 18000, provides wastewater collection and treatment services. Due to the operational load of the factory approaching the designed organic load, YBSD hopes to find a cost-effective solution to enable new industries to settle in the city. Improving the processing capacity of existing facilities can avoid building new processing plants, thereby reducing the burden on YBSD taxpayers. The factory also hopes that this solution can address future phosphorus emission regulations. YBSD has chosen ZeeLung * technology to upgrade its processing plant. After upgrading, the factory can increase its processing capacity within its existing footprint while reducing its energy consumption.

Chicago Metropolitan Water Recycling Area

In order to achieve energy balance by 2023, the Greater Chicago Metropolitan Water Recycling Area has launched a demonstration project to evaluate SUEZ's ZeeLung * technology. The device was installed at the O'Brien water recycling plant located in Scottie, Illinois to demonstrate that ZeeLung can remove nutrients from wastewater within the existing factory footprint and reduce the energy required for biological aeration by 40%.

Literature and Network Seminar

ZeeLung Literature

• ZeeLung customer benefits

• ZeeLung module

• ZeeLung 2.0 membrane box

• ZeeLung laboratory level module

ZeeLung Webinar

• MABR technology is used for upgrading nutrient removal and improving process recovery capability

• Improving Processing Capability with ZeeLung MABR Technology - Overview and Case Study