Colorado WW Operator D EXAM 2026/2027 ACTUAL
COMPLETE REAL EXAM QUESTIONS WITH
COMPLETE VERIFIED SOLUTION GUIDE (ALREADY
GRADED A+| 100% CORRECT) 2026 NEWEST
VERSION!!
What is the approximate volume of flow (MGD) treated in
a 7' wide, 4'deep grit chamber, if a floating stick moves 24'
in 30 seconds. - ANSWER--14.52 MGD
A fluid with a specific gravity of 1.05 weighs _____ lb/gal. -
ANSWER--8.7
,If the sewer rate is $5.50 for the first 500 cu ft and all
wastewater generated over the minimum is billed at a rate
of $0.25 per 100 cu ft, how much would a customer
generating 1200 cu ft be billed? - ANSWER--$7.25
A centrifugal pump is pumping 200 gpm against a 40 ft
total pumping head. The output power of the pump is
approximately ______ hp. - ANSWER--2
Calculate the lbs of BOD entering the trickling filter. Raw
wastewater flow = 1.5 MGD, Raw wastewater BOD = 150
mg/l, 30% reduction in BOD through primary treatment. -
ANSWER--1310 lb/day
,30% reduction in BOD through primary treatment -
ANSWER--
A single-piston reciprocating pump has a 6" diameter
piston with a 6" length of stroke. It makes 16 discharge
strokes/min, the pumping rate is ______gpm. - ANSWER--
12
A plant ran blowers for 24 hrs/day at 5000 cu.ft/min. How
many cu.ft/min of air were - ANSWER--1200
required to remove a pound of BOD per day if the
activated sludge system removed 6000 lbs/day? -
ANSWER--
, Compute the detention time in hours in a final clarifier
given: Diameter = 95', Depth = 11', Flow rate = 7.0 MGD. -
ANSWER--2.0 hours
Process-unit efficiency can be determined if the operator
knows - ANSWER--Influent and effluent characteristics
How many lbs/day of suspended solids are removed by a
primary clarifier given the following: Flow rate = 2.7 MGD,
influent TSS = 230 mg/L, primary effluent TSS = 110 mg/L.
- ANSWER--2702 lbs/day
COMPLETE REAL EXAM QUESTIONS WITH
COMPLETE VERIFIED SOLUTION GUIDE (ALREADY
GRADED A+| 100% CORRECT) 2026 NEWEST
VERSION!!
What is the approximate volume of flow (MGD) treated in
a 7' wide, 4'deep grit chamber, if a floating stick moves 24'
in 30 seconds. - ANSWER--14.52 MGD
A fluid with a specific gravity of 1.05 weighs _____ lb/gal. -
ANSWER--8.7
,If the sewer rate is $5.50 for the first 500 cu ft and all
wastewater generated over the minimum is billed at a rate
of $0.25 per 100 cu ft, how much would a customer
generating 1200 cu ft be billed? - ANSWER--$7.25
A centrifugal pump is pumping 200 gpm against a 40 ft
total pumping head. The output power of the pump is
approximately ______ hp. - ANSWER--2
Calculate the lbs of BOD entering the trickling filter. Raw
wastewater flow = 1.5 MGD, Raw wastewater BOD = 150
mg/l, 30% reduction in BOD through primary treatment. -
ANSWER--1310 lb/day
,30% reduction in BOD through primary treatment -
ANSWER--
A single-piston reciprocating pump has a 6" diameter
piston with a 6" length of stroke. It makes 16 discharge
strokes/min, the pumping rate is ______gpm. - ANSWER--
12
A plant ran blowers for 24 hrs/day at 5000 cu.ft/min. How
many cu.ft/min of air were - ANSWER--1200
required to remove a pound of BOD per day if the
activated sludge system removed 6000 lbs/day? -
ANSWER--
, Compute the detention time in hours in a final clarifier
given: Diameter = 95', Depth = 11', Flow rate = 7.0 MGD. -
ANSWER--2.0 hours
Process-unit efficiency can be determined if the operator
knows - ANSWER--Influent and effluent characteristics
How many lbs/day of suspended solids are removed by a
primary clarifier given the following: Flow rate = 2.7 MGD,
influent TSS = 230 mg/L, primary effluent TSS = 110 mg/L.
- ANSWER--2702 lbs/day
