WASTEWATER III STUDY EXAM QUESTIONS WITH CORRECT ANSWERS 2026

WASTEWATER III STUDY EXAM QUESTIONS
WITH CORRECT ANSWERS 2026

First P action P for P a P polymer P spill P - P CORRECT P ANSWER P -
Apply P an P absorbent P to P the P spill P such P as P sand P or P kitty P litter P and P then P sweep
P up P the P material Ps.




Total P discharge P head P includes P - P CORRECT P ANSWER P -
Discharge P pressure P head P + P static P discharge P head P + P Velocity P head P (outlet) P +
P Friction P Head P (di Pscharge P line)




Where P is P the P best P location P to P collect P a P sample? P - P CORRECT
P ANSWER P - PA P location P that P represents P the P entire P waste
P stream P or P basin.




What P are P the P preservation P and P hold P times P for P BOD P samples? P - P CORRECT
P ANSWER P - P48 P hours P at P < P or P = P to P 6 P degrees P C.




Define P BOD. P - P CORRECT P ANSWER P -
The P rate P at P which P organisms P use P the P oxygen P in P water P or P waste P water P while
P stabilizing P deco Pmposeable P organic P matter P under P aerobic P conditions.




What P is P the P purpose P of P a P dessicator? P - P CORRECT P ANSWER P -
To P allow P residual P samples P to P control P moisture P prior P to P weighing.



What P will P happen P if P the P flow P to P the P grit P chamber P is P too P low? P -
P CORRECT P ANSWER P - PToo P much P organic P material P will P be P deposited.




How P does P an P operator P control P the P suspended P solids P in P an P activated P sludge
P basin? P - PCORRECT P ANSWER P -By P wasting P and P returning P activated P sludge.




Chlorine P combines P with P ammonia P to P form P what P - P CORRECT P ANSWER P -Chloramines

, What P can P the P operator P control P with P the P activated P sludge P process? P - P CORRECT
P ANSWER P - PWasting P and P return P rates.




What P is P the P best P way P to P control P filamentous P bacteria? P - P CORRECT
P ANSWER P - PAddition P of P chlorine P to P the P (RAS.) P Called P return P on P some
P tests.




A P 5.2 P acre P lagoon P with P an P in-
fluent P of P 47000 P gallons P per P day P is P dropped P 3 P inches P a P day P from P a P depth P of
P 5 P feet P to P a P dept Ph P of P 2 P feet. P How P many P gallons P are P discharged P each P day?
P - P CORRECT P ANSWER P -
470,577 P gallons P per P day P (exact P problem)



Define P endogenous P respiration. P - P CORRECT P ANSWER P -
A P situation P where P living P organisms P oxidize P some P of P their P own P cellular P mass
P instead P of P new Porganic P matter P they P absorb P or P absorb P from P their P environment.




What P should P the P velocity P of P the P sewage P in P a P gravity P sewer P line P be P coming
P into P the P waste P w Pater P plant? P - P CORRECT P ANSWER P -At P least P 2.0 P Feet P per
P second.




What P does P hydrogen P sulfide P do P in P a P collection P system? P - P CORRECT
P ANSWER P - PIt P causes P corrosion.




What P must P be P on P the P warning P tag P attached P to P a P switch P that P has P been P locked
P out? P - PCORRECT P ANSWER P -
The P signature P of P the P person P who P locked P out P the P switch P and P who P is P the P only
P person P authori Pzed P to P remove P the P tag.




Primary P clarification P generally P removes P what P percentage P of P TSS? P (Total P Suspended
P Solids) P - PCORRECT P ANSWER P -40 P to P 60%