How DNA tech is used to optimize a Biological Nutrient Removal (BNR) process
Interview with Leon Downing, Phd, PE 2017
Biological Nutrient Removal [BNR]. What we’re looking at is finding ways to remove phosphorus and nitrogen from the wastewater biologically instead of chemically. That results in a lower net resource consumption. It also allows us to actually recover phosphorus and nitrogen. Instead of treating it, where we are removing it from the water but have another environmental impact (which is the disposal of solid waste), it actually allows us to concentrate those nutrients, pull them out, and get them back into the fertilizer cycle. Biological Nutrient Removal really drives a lot that is protecting the waterways. It’s recovering valuable resources and at the end of day it actually uses less energy to treat water than conventional processes.
A really great success story of using metagenomics in wastewater treatment and resource recovery involves a facility outside of Dallas, Texas. They’ve been doing metagenomic sequencing for about three years now and over that period of time they’ve used that to understand their ecology and give them confidence in operating their facility in a different way. With that they’ve been able to change operational strategies that reduced annual costs by three-hundred and sixty-thousand dollars a year.