Required Iowa SAGR Sizing Reduced
The 2016 Update to Technology Assessment 11-1 could mean significant savings for municipalities on post-lagoon nitrification.
Iowa municipalities could see significant reduction in cost on new SAGR™ post-lagoon nitrification installations as a result of the 2016 Update to the Iowa DNR New Wastewater Technology Assessment No. 11-1.
The update reduces required sizing and increases flexibility of SAGR™ designs “based on additional data from full scale operational facilities within the State of Iowa as well as re-evaluation of the original Steinbach pilot data and [Nexom]’s supporting information.”
More specifically, the 2016 Update changes SAGR design and operation as follows:
- Reduced overall HRT, decreasing the sizing required for dilute flow systems
- Changing BOD flux rates requirements during cell offline conditions to make the normal design conditions the limiting criteria
- Eliminating width to length and length to depth ratio requirements
- Provision for existing lagoons that do not meet Ch. 18C guidelines
- Reduced monitoring requirements for systems designed based on the existing technology assessment No. 11-1.
To find out specifically how this will impact your lagoon upgrade project, contact MC2, Nexom’s official Iowa representative.