Entries Tagged Licensing Exam

WASTEWATER By Rick Lallish When using sand beds to dry biosolids, what is the probable cause of excessive odor when the material is applied,...

The need for new operators to replace those retiring has not abated. Drinking water and wastewater utilities nationwide are constantly on the...

WASTEWATER By Rick Lallish What color is the waste gas burner on a properly operating anaerobic digester with an approximate mixture of methane 68%...

Continuing education and training are important. We all know it. But they also cost money, and not every community or utility picks...

WASTEWATER By Rick Lallish What part of a gravity belt thickener clears a path on the belt where the water falls freely through the...

Licensing exams can be challenging. Our Exam Study Guide helps you prepare by presenting questions similar to those on an actual exam. You can...

WASTEWATER By Rick Lallish The MPN method for fecal coliform testing has become one the most common methods for testing. What is a disadvantage...

WASTEWATER By Rick Lallish Even though there are many ways to determine wasting amounts, what is the main purpose of wasting? A. Maintain acceptable sludge...

For those who work in the trades, success depends not only on developing core skills but on keeping those skills sharp. Of course,...

WASTEWATER By Rick Lallish In fixed-film processes, what must be reduced before nitrification can occur? A. Organic loading rate B. Hydraulic loading rate C. AOB and NOB...

WASTEWATER By Rick Lallish When defining confined spaces in your facility, who makes the determination whether the space is nonpermit confined space or permit-required confined...

WASTEWATER By Rick Lallish While performing the daily walk-through at an aerated lagoon treatment plant, you notice surface bubbling throughout the primary lagoon, except...

WASTEWATER By Rick Lallish Membrane bioreactors are becoming a viable option for retrofitted waste treatment facilities or newly built facilities. What two types of...

WASTEWATERBy Rick LallishWhat is the most common type of lagoon in use to treat municipal wastewater?A. Anaerobic lagoonB. Aerated lagoonC. Polishing lagoonD. Facultative lagoonAnswer: D. The...