![There's a New Way to Measure BOD. It Doesn't Require Long Waits for Lab Results](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Fsentry1.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=cfc56b15aab216a5054ee95f9ce52605)
The SENTRY device is deployed inside a sleeve attached to a PVC pipe with U-bolts and suspended in the wastewater stream.
BOD in wastewater influent varies with time, sometimes changing slowly and regularly, other times changing suddenly.
Inflow and infiltration, a sudden high-strength discharge from an industrial facility, a toxic load from an unauthorized chemical release — these and other events...