AWWA Questions pt7 Questions and Answers 2024
when the specific oxygen uptake rate sour drop dramatically, what are possible causes?
it is possible indication of toxics in the aeration basin
what is the significance of a bulk clarifier hydraulic loading rate, such as 2,000 gpd/ft^2?
it is...
when the specific oxygen uptake rate sour drop dramatically, what are possible causes?
- answer it is possible indication of toxics in the aeration basin
what is the significance of a bulk clarifier hydraulic loading rate, such as 2,000 gpd/ft^2?
- answer it is a measure of the net fluid upward velocity that controls the speed of MLSS
settling
which of the following chemicals will not remove phosphorus?
calcium hydroxide
aluminum sulfate
sulfur dioxide
ferric chloride - answer sulfur dioxide
what is the purpose of a motor coupling? - answer it transmits power from the motor to
the pump
it can compensate for minor shaft misalignments
it enables separate maintenance of the pump motor
can a stabilization pond treat wastewater just as well as an activated sludge system -
answerstabilization ponds do NOT treat wastewater as well as an activated sludge
system
why should gloves,lab aprons and goggles be mandatory when handling lab chemicals
and wastewater? - answerfor workers protection from infection, spills, and splashes
what is alkalinity, and why is it necessary in the water? - answeralkalinity is the product
of bicarbonates and weak acid salts, and it is required for anaerobic degradation and
denitrification
what causes extreme foaming on the surface of the aeration tank? - answerthe
presences of alkyl benzene sulfonate (old style detergent) in the water
what are the pretreatment requirements before ultrafiltration or membrane filtration? -
answerscreening or filtration removal of very large abrasive particles and conditioning of
the water.
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