This is exactly what I said, or meant. The bacteria breaks away from the pellet due to tumbling. The bacteria also consumes the polymer so it eventually has to be replaced. Its just another carbon source for the exact same bacteria to consume like with vodka and vinegar.
True, I was just clarifying the part about the polymer not actually getting in the water stream which is what makes it different than vodka/vinegar dosing. The primary difference is that vodka/vinegar puts a soluble C source into the water stream and pellets keep the C source in the reactor.


