Entries Tagged Licensing Exam

WASTEWATER By Rick LallishHow is wasting accomplished when operating a sequencing batch reactor?A. Immediately after the react stageB. During the react stage (about halfway through...

WASTEWATER By Rick LallishDuring a visual inspection of the activated sludge aeration basin, you notice that a stiff white foam has formed on...

WASTEWATER By Rick LallishAnhydrous or quicklime is great for pH-adjusting and coagulating solids. What must be done before it can be used?A. It has...

You’d never guess today that Brian Boswell more or less stumbled into wastewater management. Now as superintendent of wastewater for Columbus (Georgia) Water...

WASTEWATER By Rick LallishPacked bed is the most common form of wet scrubber odor control. How is this accomplished?A. Hypochlorite adsorptionB. Electrolytic chemical scrubberC. Chemical absorptionD. Biological...

WASTEWATERBy Rick LallishWhat superior disinfection process is created on site, is done in an enclosed tank, and produces off-gas that must be...

WASTEWATER By Rick LallishHydrogen sulfide is oxidized to sulfuric acid by what bacteria, common in pipe walls in collection systems and lift station...

Late in my senior year of college I was seeking a summer internship at the local daily newspaper.For help in preparing for...

WASTEWATER By Rick LallishConditions recognized as major operating problems causing poor performance or failure of wastewater collections systems are known as what?A. Industrial dischargesB. Peripheral...

WASTEWATER By Rick LallishWhat piece of laboratory equipment is used to determine settleable solids?A. CrucibleB. SettleometerC. Imhoff coneD. FilterAnswer: C. The settleable solids test is used to...

WASTEWATER By Rick LallishAeration reactors using buoyant free-floating biofilm carriers in an activated sludge process are known as what sort of treatment?A. Rotating...

WASTEWATER By Rick LallishWhen using membrane bioreactors, what is typically required for upstream screening?A. Stringent pretreatment standards for all industrial usersB. Primary clarification followed by...

WASTEWATER By Rick Lallish What type of diffuser gives the best oxygen transfer but less efficient mixing? A. Coarse-bubbleB. Fine-bubbleC. Volcano pressurizedD. Mechanical ANSWER:  B. Diffusers...

Perhaps no one has gained more from experience than LaTia Jutan.Taking advice from her mom, developing management skills in her own cleaning...