.png){kind=logo}
TEXAS WASTEWATER CLASS B NEWEST ACTUAL EXAM COMPLETE 200 QESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
1 | P a g e
TEXAS WASTEWATER CLASS B NEWEST 2026-2027
ACTUAL EXAM COMPLETE 200 QESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
Organic loading of a stabilization pond is about ____ pounds of
BOD/acre/day with a detention time of at least ___ days. -
ANSWER- 35 BOD/ 30 Days
Anaerobic digesters are covered to keep out ____, and to trap
useful methane which can be used to keep the digester warm. -
ANSWER- free oxygen
Unstable anareobic sludge contains streaks of _________ or
________. - ANSWER- gray/green
Aerobic digestion is an ____process whereby the aerobic
bacteria consume themselves - ANSWER- Endogenous
Approved disposal methods for digested, dewatered, sludge's are
landfill, ____ and ____. - ANSWER- Incineration & Land
Application
2 | P a g e
Landfill applied sludge must have a solids content of at least
_________percent - ANSWER- 20
Calcium Hypochlorite (HTH) is a strong _______ and reacts
violently with _________. - ANSWER- Oxidizer/Oil &
Hydrocarbons
When added to water chlorine forms _____&_______acid -
ANSWER- Hydrochlorous and Hydrochloric
When ammonia is present in wastewater and reacts with
chlorine_________are formed - ANSWER- Chloramines
Effluent dosage of chlorine in the contact chamber must produce
a total combined residual of - ANSWER- 1.0 mg/L after 20
minutes
Besides disinfection, chlorine has other uses at the wastewater
treatment plant such as - ANSWER- Reduces BOD, Odor,
Algae growth, Helps with Grease
TCEQ allows the reuse of wastewater, some of these include -
ANSWER- Irrigation, aquifer recharge, cooling towers and fire
protection
3 | P a g e
All reclaimed water piping must be _______in color -
ANSWER- purple
Before entering a manhole the operator should test for
________and oxygen levels and ________the manhole before
entering. - ANSWER- all hazardous gasses and ventilate
When a municipal wastewater effluent has a high nitrate level
and low ammonia level this most likely means - ANSWER- the
effluent has received a high degree of aerobic treatment
Total solids in wastewater are the sum of - ANSWER- Settleable
and volatile solids
This treatment device is commonly used to separate and remove
large solids from raw wastewater - ANSWER- A Mechanically
raked bar screen
___________would have an adverse effect on the proper settling
of solids in a clarifier. - ANSWER- A short circuiting flow
pattern
4 | P a g e
This test would give the best information on how efficiently a
trickling filter was operating - ANSWER- Percent BOD
Removal
This trickling filter problem could be reduced by increasing the
recirculation ratio - ANSWER- Filter files
What gases are produced by the controlled anaerobic digestion
of wastewater sludge's - ANSWER- Methane & Carbon Dioxide
These diseases are caused by pathogenic organisms that may be
present in raw wastewater - ANSWER- Hepatitis, typhoid,
paratyphoid, dysentery, cholera, gastroenteritis, polio,
hookworm and giardiasis
During heavy rain it is possible that manholes and lift stations
may overflow, discharge waste materials into roadways or
ditches. This type of discharge (SSO) would be - ANSWERconsidered an unavoidable discharge, a violation of the Texas
Water Code, a bypass that must be reported within 24 hours and
considered a health hazard
An effective way for the collection system worker to prevent
infection by waterborn pathogenic organism is to - ANSWER
.png)