Wastewater B Test Questions and
Correct Answers 100% Guaranteed
Pass
What 3 things could be the cause of a 30 minute settling test with high S.V.I. , dark color
sludge and clear supernate that took a long time to form? - Answer-1. bulking sludge
2. presence of fulking filamentous bacteria
3. low D.O. in the aeration basin
An oxygen uptake rate that is falling which is performed in an aeration chamber
indicates the presence of what? - Answer-toxic materials
Why is it best to use as few different types of lubricants in a plant as possible? -
Answer-reduce the chances of making an error in application
What 3 things can aquifer recharge with plant effluent be used for? - Answer-1.
prevention of salt water intrusion
2. reduction of substance
3. replenishing ground water
if a force main size is too small what can result? - Answer-velocity will increase
How can you tell that an anaerobic digester is functioning well? - Answer-CO2
concentration decreases CH4 increases
What does bio-monitoring test? - Answer-toxicity of water by exposing living organisms
to plant effluent
How can phosphates be removed from secondary effluent? - Answer-Luxury uptake,
alum precipitation, and lime precipitation
What are 3 indications of denitrification - Answer-1. gas bubbles
2. chunks of sludge rising in the secondaryy clarifier
3. S.S.T. inverts in 1-4 hours
what is the most important function of the management at a treatment plant? - Answer-
maintaining treatment and maintenance records
, What is the reason for slow movement of grit by way of a screw on an incline in a grit
washing type removal system? - Answer-removal of organic material from grit
In the contact stabilization mode of activated sludge the contact tank detention time is
designed to be less than what? - Answer-other activated sludge processes
the sludge is bulking if the S.V.I. equals what? - Answer-180
what is the purpose of return activated sludge? - Answer-remove solids accumulating in
the clarifier; reseeding aeration tank with biologically activated solids
450 parts gas chlorine is yielded by how much liquid chlorine? - Answer-1 part
the nitrifying bacteria will tend to make the mixed liquor PH what? - Answer-decrease
Percent of volatile solids normally in sludge - Answer-70-80%
D.O. levels in a primary clarifier - Answer-0.5-1.0 MG/L
Why are precautionary measures needed around an aeration basin? - Answer-undertow
and turbulence
O.S.H.A. approved trench - Answer-narrow excavation in which the depth is greater
than the width; the width must be less than 15 feet
What causes bulking? - Answer-1. Excessive hydraulic loading,
2. Solids not promptly removed from clarifier
3. Inadequate weir length
4. Improper ratio of depth to surface area of the final clarifier
What are the 5 elements of a trickling filter? - Answer-1. Floor
2. under drain
3. Wall containing the filter bed
4. media
5. filter distribution arm
When and where are monthly reports submitted? - Answer-by the 20th of the following
month; submitted to Austin
How and when do you report a bypass? - Answer-as soon as possible by phone within
24 hours; followed by in writing within 5 working days
What are the 5 events of stream purification? - Answer-1. Pollution
2. Degradation
3. Decomposition
4. Recovery
Correct Answers 100% Guaranteed
Pass
What 3 things could be the cause of a 30 minute settling test with high S.V.I. , dark color
sludge and clear supernate that took a long time to form? - Answer-1. bulking sludge
2. presence of fulking filamentous bacteria
3. low D.O. in the aeration basin
An oxygen uptake rate that is falling which is performed in an aeration chamber
indicates the presence of what? - Answer-toxic materials
Why is it best to use as few different types of lubricants in a plant as possible? -
Answer-reduce the chances of making an error in application
What 3 things can aquifer recharge with plant effluent be used for? - Answer-1.
prevention of salt water intrusion
2. reduction of substance
3. replenishing ground water
if a force main size is too small what can result? - Answer-velocity will increase
How can you tell that an anaerobic digester is functioning well? - Answer-CO2
concentration decreases CH4 increases
What does bio-monitoring test? - Answer-toxicity of water by exposing living organisms
to plant effluent
How can phosphates be removed from secondary effluent? - Answer-Luxury uptake,
alum precipitation, and lime precipitation
What are 3 indications of denitrification - Answer-1. gas bubbles
2. chunks of sludge rising in the secondaryy clarifier
3. S.S.T. inverts in 1-4 hours
what is the most important function of the management at a treatment plant? - Answer-
maintaining treatment and maintenance records
, What is the reason for slow movement of grit by way of a screw on an incline in a grit
washing type removal system? - Answer-removal of organic material from grit
In the contact stabilization mode of activated sludge the contact tank detention time is
designed to be less than what? - Answer-other activated sludge processes
the sludge is bulking if the S.V.I. equals what? - Answer-180
what is the purpose of return activated sludge? - Answer-remove solids accumulating in
the clarifier; reseeding aeration tank with biologically activated solids
450 parts gas chlorine is yielded by how much liquid chlorine? - Answer-1 part
the nitrifying bacteria will tend to make the mixed liquor PH what? - Answer-decrease
Percent of volatile solids normally in sludge - Answer-70-80%
D.O. levels in a primary clarifier - Answer-0.5-1.0 MG/L
Why are precautionary measures needed around an aeration basin? - Answer-undertow
and turbulence
O.S.H.A. approved trench - Answer-narrow excavation in which the depth is greater
than the width; the width must be less than 15 feet
What causes bulking? - Answer-1. Excessive hydraulic loading,
2. Solids not promptly removed from clarifier
3. Inadequate weir length
4. Improper ratio of depth to surface area of the final clarifier
What are the 5 elements of a trickling filter? - Answer-1. Floor
2. under drain
3. Wall containing the filter bed
4. media
5. filter distribution arm
When and where are monthly reports submitted? - Answer-by the 20th of the following
month; submitted to Austin
How and when do you report a bypass? - Answer-as soon as possible by phone within
24 hours; followed by in writing within 5 working days
What are the 5 events of stream purification? - Answer-1. Pollution
2. Degradation
3. Decomposition
4. Recovery
