Final Complete study guide for wastewater practice exam 2024/2025
Odors occur when treatment becomes
Anaerobic
What should an operator do before entering a manhole
Test for all hazardous gases and oxygen levels and ventilate the manhole before entering
What treatment devices is commonly used to separate and remove large solids from raw wastewater
a mechanically raked bar screen
What diseases are caused by pathogenic organisms that may be present in raw wastewater?
Hepatitis, typhoid, paratyphoid, dysentery, and cholera
What is typically used to dewater sludge?
Belt press, Drying beds, solid bowl centrifuge, and gravity thickener
Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet wide and 20 feet deep
269,280
What is typically used whenever wastewater cannot flow to the treatment plant by gravity
Lift station
A centrifugal pump must be ? or it will not pump
Primed
One common type of weir design for measuring flow is
V-Knotch
The operator would need to increase or decrease if the ? loading on the plant is high
increase/Organic
A simple method for indication when to waste sludge is
Total sedimentation test
Landfill applied sludge must have a solids content of at least ?
20%
Effluent dosage of chlorine in the contact chamber must produce a total combined residual of ?
1.0mg/L after 20 minutes
TCEQ allows the reuse of wastewater, some of these uses include
Odors occur when treatment becomes
Anaerobic
What should an operator do before entering a manhole
Test for all hazardous gases and oxygen levels and ventilate the manhole before entering
What treatment devices is commonly used to separate and remove large solids from raw wastewater
a mechanically raked bar screen
What diseases are caused by pathogenic organisms that may be present in raw wastewater?
Hepatitis, typhoid, paratyphoid, dysentery, and cholera
What is typically used to dewater sludge?
Belt press, Drying beds, solid bowl centrifuge, and gravity thickener
Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet wide and 20 feet deep
269,280
What is typically used whenever wastewater cannot flow to the treatment plant by gravity
Lift station
A centrifugal pump must be ? or it will not pump
Primed
One common type of weir design for measuring flow is
V-Knotch
The operator would need to increase or decrease if the ? loading on the plant is high
increase/Organic
A simple method for indication when to waste sludge is
Total sedimentation test
Landfill applied sludge must have a solids content of at least ?
20%
Effluent dosage of chlorine in the contact chamber must produce a total combined residual of ?
1.0mg/L after 20 minutes
TCEQ allows the reuse of wastewater, some of these uses include
