Thanks to everyone who tried the last quiz. No one got all 25 right but shirts were awarded to Cheri Lawless and Frank Brzostek for getting only 1 wrong. This quiz is shorter and were limiting the shirts to the first 20 winners. When you have completed your selections, fill in the address fields at the bottom of the page. An excessive number of flagellates in an activated sludge process is a sign of an old sludge true false 5.
Nitrification reduces the alkalinity of wastewater and denitrification adds alkalinity.
It is permissible to collect a fecal coliform sample from from a 24 hour composite sample.