For more information check out the Process Technology page for ATAD / DDS.Stand alone systems using staged ATAD reactors obtain 90% oxygrn utilization and are cost effective.

In the 1970’s the “UNOX” group of UCC Linde pioneered the development of autothermal aerobic digestion (ATAD) systems using oxygen as the aeration gas. There were eight systems that were commissioned. These ATAD systems evolved into the Dual Digestion Systems (DDS) that combined the beneficial characteristics of both aerobic and anaerobic digestion treatment. In the 1980’s there were six of these systems commissioned. The 503 biosolids regulations have revived interest in this innovative technology. The benefits of DDS

 include:

Introduction News & Notes Spotlight Process Service D/B/O Request Information Representation Archives (N&N, SOS)
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ENVIRONMENTAL
SYSTEMS
GROUP
NEWS and TECHNICAL NOTES
a monthly report on wastewater/water treatment technology 01/2001 volume 2 number 1