Faster SDNRs with Prolonged Glycerin Addition, Carbon Storing Bugs, the Enemy (Dissolved Oxygen), and Other Things Encountered While Piloting Supplemental Carbon at Several BNR Plants

The Fate of Glycerin in BNR, A Closer Look at Nitrite Accumulation and Glycerin Specialists

“…Bench scale denitrification tests using glycerin as a carbon source have reported 1) nitrite accumulation (Onnis-Hayden, 2011;Uprety, 2012;Bilyk, 2012) and 2) glycerin-COD storage and increasing SDNR and/or COD:N requirements over time (Bilyk, 2011, Uprety, 2012 perhaps due to the development of specialized populations or adaptation of enzymatic activities based on the environment the microbial community is exposed to.…”