Texas Wastewater B exam questions with correct answers

Primary Clarifiers CORRECT ANSWER In an activated sludge treatment system, primary treatment processes include the: Removal of Inorganic material from grit CORRECT ANSWER In a washing grit remover, the grit is moved slowly by screw conveyors up an inclined channel in order to? 90% or above CORRECT ANSWER An efficient primary clarifier is expected to remove ? of the influent settleable solids. Adequate DO at surface at all times CORRECT ANSWER Proper operation of a facultative pond system requires that:, True CORRECT ANSWER The amount of organic matter removed by a trickling filter is mostly dependent on the recirculation ratio Bulking CORRECT ANSWER In an activated sludge treatment plant, a Sludge Volume Index (SVI) of 180 would indicate Reseed The AB, Remove sludge from FC CORRECT ANSWER The purpose of returning the solids from the bottom of the clarifier to the aeration tank in the activated sludge process is to Free swimmer rotifers stalked ciliates CORRECT ANSWER Microscopic examination of a good-settling sludge should show a predominance of: