WASTEWATER B
WASTEWATER B EXAM QUESTIONS AND ANSWERS LATEST TOP
SCORE.
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
,WASTEWATER B
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
5. Clear
What are the 2 methods for measuring D.O.? answer >> 1. Winkler
method
2. meter
What is needed for good communication? answer >> good listening
How much chlorine gas comes from one-part liquid chlorine? answer
>> 450
, WASTEWATER B
What does the "F and M" stand for in the F:M Ratio? answer >> Food
to Microorganism
What feeds the nitrification organisms? answer >> fatty volatile acids
An explosive atmosphere contains what 2 things? answer >> 1. Oxygen
2. flammable gas vapor or dust
How deep should the drying bed sludge be? answer >> 8-12 inches
Why is a low flow rated important when filling a drying bed? answer >>
to prevent undigested sludge from breaking through the ripe sludge
blanket in the digester
Under a microscope what 2 organisms should be predominant? answer
>> 1. SILIATE
2. rotifers
The detention time in a contact stabilization plant is more or less than
other extended aeration plants? answer >> Less
What 2 things are chlorine used for? answer >> 1. disinfection
2. odor control
WASTEWATER B EXAM QUESTIONS AND ANSWERS LATEST TOP
SCORE.
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
,WASTEWATER B
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
5. Clear
What are the 2 methods for measuring D.O.? answer >> 1. Winkler
method
2. meter
What is needed for good communication? answer >> good listening
How much chlorine gas comes from one-part liquid chlorine? answer
>> 450
, WASTEWATER B
What does the "F and M" stand for in the F:M Ratio? answer >> Food
to Microorganism
What feeds the nitrification organisms? answer >> fatty volatile acids
An explosive atmosphere contains what 2 things? answer >> 1. Oxygen
2. flammable gas vapor or dust
How deep should the drying bed sludge be? answer >> 8-12 inches
Why is a low flow rated important when filling a drying bed? answer >>
to prevent undigested sludge from breaking through the ripe sludge
blanket in the digester
Under a microscope what 2 organisms should be predominant? answer
>> 1. SILIATE
2. rotifers
The detention time in a contact stabilization plant is more or less than
other extended aeration plants? answer >> Less
What 2 things are chlorine used for? answer >> 1. disinfection
2. odor control
