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tx wwtp b license exam questions with correct answers
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tx wwtp b license exam questions with correct answers
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tx wwtp b license exam questions withcorrect answers
each person contributes about _______ pounds of BOD daily - ** VERIFIED ANSWERS
**✔✔0.17
a ladder must be within ______ feet of anyone in a trench - ** VERIFIED ANSWERS
**✔✔25
Examples of point source discharges include which of the following - ** VERIFIED
ANSWERS **✔✔Municipal, industrial, and agricultural wastewater treatment facilities
Protecting Texas water from contamination requires which of the following of wastewater -
** VERIFIED ANSWERS **✔✔Collection and transportation to treatment, treatment that
removes contaminants, processing and disposal of solids
Which of the following are normal operator controls of activated sludge process - **
VERIFIED ANSWERS **✔✔RAS, WAS, DO
Ponding on a trickling filter is caused by which of the following - ** VERIFIED ANSWERS
**✔✔Excessive zoogleal growth,
Improper media ,
Poor primary treatment
Organic loading is the pounds per day of _______ per acre feet or 1000 cubic feet of media -
** VERIFIED ANSWERS **✔✔BOD
,An ultrasonic flow monitoring device works on the principle of _______ - ** VERIFIED
ANSWERS **✔✔sonar
The primary causes of waste water stoppages are _________ - ** VERIFIED ANSWERS
**✔✔Roots and grease
What is the range of the ph scale - ** VERIFIED ANSWERS **✔✔0-14
When an accidental discharge, bypass, or spill occurs, the discharger must notify TCEQ
within how long - ** VERIFIED ANSWERS **✔✔24 hours
An administrative penalty for discharging violations can be up to ______ per day - **
VERIFIED ANSWERS **✔✔$25000
When chlorine is used, the effective disinfectant is __________ - ** VERIFIED ANSWERS
**✔✔HOCL
one surface acre of ponds provides treatment for how many people - ** VERIFIED
ANSWERS **✔✔300
Examples of waterborne pathogens are - ** VERIFIED ANSWERS **✔✔Typhoid, cholera,
and dysentery
When sludge in an imhoff tank is near ______ inches of the slot, withdraw sludge - **
VERIFIED ANSWERS **✔✔18
A weir is an obstruction placed in a channel causing the water to what - ** VERIFIED
ANSWERS **✔✔Backup
,The most important problem prevented by monitoring or restricting industrial waste is
__________ - ** VERIFIED ANSWERS **✔✔Worker exposure
Excavations ___________ Feet or deeper should be shored, shielded, or sloped - **
VERIFIED ANSWERS **✔✔5
The primary purpose of returning sludge in the activated sludge process is to have enough
__________ in the aeration basin to match the food supply - ** VERIFIED ANSWERS
**✔✔Micro organisms
A simple method of determining when to dump waste from an activated sludge plant is the
_______ - ** VERIFIED ANSWERS **✔✔30 minutes settling test
imhoff tanks are ________ story units with _______ components - ** VERIFIED ANSWERS
**✔✔two , three
Aerobic digestion is a _______ process whereby the Aerobic bacteria consumes themselves -
** VERIFIED ANSWERS **✔✔endogenous
in a well operated anaerobic digester the methane gas content is about _________ - **
VERIFIED ANSWERS **✔✔65-75%
Organic loading of a stabilization pond is about ________ pounds of BOD/acre/day with a
detention time of at least ______ days - ** VERIFIED ANSWERS **✔✔35 ; 30
Gas chlorinator feed rates are indicated by the _______ in pounds per day - ** VERIFIED
ANSWERS **✔✔Rotameter
Disease causing microorganisms are called ________ - ** VERIFIED ANSWERS
**✔✔pathogens
, Types of industrial waste are flammable oil, toxic gases, _________ - ** VERIFIED
ANSWERS **✔✔Acids, and alkalis
The bod test indicates the amount of organic matter that can be oxidized by biological and
chemical action in _______ days at __________ °C - ** VERIFIED ANSWERS **✔✔5 ; 20
The TCEQ set permit conditions including permit duration, quality of discharge, discharge
point, reporting requirements, and__________ - ** VERIFIED ANSWERS **✔✔Maximum
discharge
Which of the following applies to the discharge of untreated wastewater into the waters of
the state - ** VERIFIED ANSWERS **✔✔It is a bypass,
it is an unauthorised discharge,
It must be reported to TCEQ within 24 hours
A hazardous gas that a collection worker might encounter in a manhole is which of the
following - ** VERIFIED ANSWERS **✔✔Hydrogen sulfide,
methane,
carbon doxide
the line that carries wastewater to the treatment plant is called the _________ line - **
VERIFIED ANSWERS **✔✔outfall
Some of the primary components of a collection system are pipes, Clean outs, grease traps,
Sand traps, inverted siphons, vent pipes, manholes, and ________ - ** VERIFIED
ANSWERS **✔✔lift stations
A ________ allows a wastewater line to cross below a hydraulic gradient - ** VERIFIED
ANSWERS **✔✔Inverted siphon
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