TEXAS WASTEWATER CLASS D NEWEST ACTUAL
EXAM COMPLETE 250 QESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+!!
Environment --> Water Treatment --> Water Distribution
System --> Customer Use --> Wastewater Collection
System --> Wastewater Treatment --> Environment -
ANSWERWhat are the steps of the Water Use Cycle?
- Removal of health hazards
- Prevention of odors and flies
- Cleanliness and appearance
- Comfort and convenience - ANSWERWhat are the
benefits of the collection system?
,Septic wastewater doesn't contain dissolved oxygen and is
difficult to treat. Fresh wastewater contains dissolved
oxygen and is easier to treat, which results in higher
quality effluent - ANSWERSeptic vs. Fresh wastewater?
Surface runoff that enters the collection system -
ANSWERInflow
Groundwater that enters the collection system through
holes, cracks, etc. - ANSWERInfiltration
,100 gallons per day - ANSWERWhat is the average
domestic contribution to the collection system? (Per
person/day)
Physical, Chemical, Bacteriological, and Radiological -
ANSWERWhat are the four wastewater characteristics?
99.9% water, 0.1% solids - ANSWERDomestic wastewater
is ___% water and ___% solids
Suspended solids that will settle when wastewater flow is
still or slow moving - ANSWERSettleable solids
, 0 (most acidic) to 14 (most basic), 7 is neutral -
ANSWERWhat is the pH scale range?
Septic has lower pH due to volatile acids formed from
wastewater decomposition - ANSWERDoes septic or
freshwater have a lower pH? Why?
A colorless, toxic, and flammable gas that resembles the
smell of rotten eggs. It results from the bacterial
breakdown of organic matter in the absence of oxygen. It
is heavier than air. - ANSWERWhat is Hydrogen Sulfide
(H2S)? When does it occur?
EXAM COMPLETE 250 QESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+!!
Environment --> Water Treatment --> Water Distribution
System --> Customer Use --> Wastewater Collection
System --> Wastewater Treatment --> Environment -
ANSWERWhat are the steps of the Water Use Cycle?
- Removal of health hazards
- Prevention of odors and flies
- Cleanliness and appearance
- Comfort and convenience - ANSWERWhat are the
benefits of the collection system?
,Septic wastewater doesn't contain dissolved oxygen and is
difficult to treat. Fresh wastewater contains dissolved
oxygen and is easier to treat, which results in higher
quality effluent - ANSWERSeptic vs. Fresh wastewater?
Surface runoff that enters the collection system -
ANSWERInflow
Groundwater that enters the collection system through
holes, cracks, etc. - ANSWERInfiltration
,100 gallons per day - ANSWERWhat is the average
domestic contribution to the collection system? (Per
person/day)
Physical, Chemical, Bacteriological, and Radiological -
ANSWERWhat are the four wastewater characteristics?
99.9% water, 0.1% solids - ANSWERDomestic wastewater
is ___% water and ___% solids
Suspended solids that will settle when wastewater flow is
still or slow moving - ANSWERSettleable solids
, 0 (most acidic) to 14 (most basic), 7 is neutral -
ANSWERWhat is the pH scale range?
Septic has lower pH due to volatile acids formed from
wastewater decomposition - ANSWERDoes septic or
freshwater have a lower pH? Why?
A colorless, toxic, and flammable gas that resembles the
smell of rotten eggs. It results from the bacterial
breakdown of organic matter in the absence of oxygen. It
is heavier than air. - ANSWERWhat is Hydrogen Sulfide
(H2S)? When does it occur?
