The DEMON® sidestream deammonification system |
DEMON® removes ammonia from wastewater in a biological process that features ammonia oxidizing bacteria (AOB), which convert half the ammonia to nitrite. A second anaerobic biological process uses Anammox bacteria to convert the combination of nitrite and remaining ammonia directly into nitrogen gas. This system reduces energy requirements by 60 percent compared to traditional nitrogen removal processes, eliminates the need for all chemicals, and produces 90 percent less sludge. The system also features a low carbon footprint.
The process is seeded with Anammox bacteria, which aids in a quick start up of a system rather than cultivating bacteria from scratch. This factor has proven to be an obstacle for other deammonificationtechnologies. To retain the Anammox bacteria, a unique patent pending separation device provides enrichment of the specialized slowly growing Anammox biomass. The device enhances process robustness and treatment capacity and provides resilience despite changes in wastewater quality.
For other articles on the DEMON® technology, please reference the below links:
Breeding Better Bugs: Is Tiny Bacterium the Next Big Thing in Nitrogen Removal?
Product Focus: New nitrification technology helps WWTP reduce energy, sludge requirements
Algae-Based Wastewater Treatment
World Water Works also announced its recent investment in Aquanos Energy, Ltd, an Israel-based company that designed an algae-based wastewater treatment process for wastewater purification and renewable energy production.
Aquanos' technology captures the symbiotic relationship between bacteria and algae. Bacteria supplies carbon dioxide to the algae, algae provides oxygen to the bacteria, and both remove impurities from wastewater. This natural process reduces a wastewater treatment system's operational costs by 40 to 60 percent and significantly reduces capital expenditures.