by Erik Rumbaugh | Jul 30, 2024 | Wastewater Troubleshooting
Nitrite lock occurs when the ammonia (NH₄) doesn’t complete the full nitrification process, which typically involves the following steps: Ammonia Oxidation (NH₄ → NO₂): Ammonia is oxidized to nitrite by ammonia-oxidizing bacteria (AOB). Nitrite Oxidation (NO₂ →...
by Erik Rumbaugh | Apr 10, 2024 | Wastewater Organisms
This wastewater indicator organisms poster relates observed protozoa and metazoa populations to F/M and MCRT. We find it useful to post near the lab microscope to help with interpretation and finding where you are on the growth curve.
by Erik Rumbaugh | Apr 8, 2024 | Wastewater Procedure
Dissolved Oxygen Uptake Rate (DOUR) and Specific Oxygen Uptake Rate (SOUR) are often used to monitor biological system health on a daily basis. When used frequently, oxygen uptake rates show changes in bacteria growth/respiration rates. I have included the protocol...
by Erik Rumbaugh | Apr 8, 2024 | Non-filamentous bulking
Non-filamentous bulking is often overlooked as a wastewater treatment problem. Operators facing viscous bulking often complain of “gelatinous” floc, that billows over the clarifier weir and is difficult to dewater on the secondary press.We see viscous...
