Florida Wastewater Operator Class B Certification Exam
A common remedy for activated sludge system problems is to increase the waste activated sludge flow rate, when would an increase of WAS rate not be correct? - Answer-When straggler Floc is present in clarifier and settleometer The chlorine residual is falling An inspection of the 150lb cylinder and chlorine feed equipment shows ice forming on the chlorine regulator and feed lines. The best method to fix the falling chlorine residual is? - Answer-Put another chlorine cylinder online Caution must be used when adding caustic chemical to a digester. Lime can combine with carbon dioxide in the digester to form what problem? - Answer-A dangerous vacuum How many gallons will the single piston, reciprocating sludge pump discharge per minute If the piston bore (diameter) is 6 inches and the stroke length is 11 inches? The pump runs at 99 revolutions per minute. - Answer-134gpm solve MCRT: Flow: 3.6mgd Basin volume: 5.0mg MLSS:2350mg/l WAS ss:4800mg/l WAS flow: 150000gpd Eff tss: 15mg/l - Answer-15 days There are high suspended solids in the water applied to the filters due to bulking sludge in the secondary clarifiers. Polymer is used as a filter aid chemical, but the effluent ability is worsening. What is the best method to correct the filter problem? - Answer-Run jar tests to d
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