ABC Wastewater Verified Multiple Choice and Conceptual Actual Frequently Tested
Exam Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
Pump Eflciency Eflciency = (Output/Input) x 100
Lag Growth Phase Phase where cells grow in size
SO2 Hazard Acute toxicity on Global chemical data sheet
Extended Aeration Change Decrease in MLVSS when plant changes to extended air
Unseeded BOD Depletion Caused by contaminated glassware
Struvite Removal Addition of iron salt to precipitate phosphate
Wet Scrubber Chemical Sodium Hydroxide for H2S odor control
Mud Balls Removal Increase backwash or hydrogen peroxide rinse
Viable BOD Test Fourth BOD test with depletion of at least 2 and holding 1
Ceriodaphnia Dubia Test LC 50>100 Effluent indicates survival rate less than 50%
Calculate BOD removed from influent BOD and % loss in
BOD Removal Calculation
each stage
Pump Flow Rate Calculation Calculate pump flow rate based on water level rise
Filamentous Bacteria Observation View through a microscope using phase contrast
Receiving Water Pollution Duration Less than 2 days with organic and ammonia nitrogen
Minimum Secondary Clarifier Depth 12 Feet
ORP Sensor Storage Store in a neutral solution to prevent damage
Predominate Organism in Pin Floc Rotifers
Explosive Gas in Confined Space Methane (CH4) with explosive limits of 5%-19%
Cavitation Causes Clogged inlet, small suction pipe, or closed valve
Ferric Chloride Excess Lowers PH and increases sludge production
Mesophilic Digester Temperature Operates at 85-100 Degrees Fahrenheit
Thermophilic Digester Temperature Operates at 122-140 Degrees Fahrenheit
Iron Salts Advantage over Alum More ettective over a broader PH range and cheaper
1/5
, ABC Wastewater Verified Multiple Choice and Conceptual Actual Frequently Tested
Exam Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
Cryophilic Digester Temperature Operates at less than 68 Degrees Fahrenheit
Calculate horsepower using voltage, current, and eflcien-
Pump Horsepower Calculation
cy
Calculate pump flow rate based on water level rise and
Wet Well Pumping Rate
time
BOD: COD Ratio Ratio of 0.5-1
Skunk Odor Source Mercaptan at low concentrations
C:N:P Ratio 100:5:1
Hepatitis Form in Wastewater Form A
D.O. in Anoxic Tank 0.0-0.2
New Pump Higher Amps Cause Wrong impeller size or wrong size motor
UV Ground Fault Cause Broken quartz sleeve
Diaphragm Pump Elevation Elevation needed above water level for pump
Activated Sludge Adjustment Decrease MCRT from winter to summer
Grit Channel Odor Correction Remove 2 channels to increase velocity
Membrane Filtration Process Reverse Osmosis
Dewatering Centrifuge Process Sedimentation
High COD in Week 3 Caused by toxic spill
Activated Sludge Volatile Solids Should be 70%
Nitrosomonas and Nitrobacter Autotrophs
Metal Reaction with Water Forms hydroxides and hydrogen gas
COD:N:P Ratio 150:5:1
RAS and WAS Change Impact Increase and decrease in F/M and MLSS
Pump Running Cost Calculation Calculate annual cost using eflciency and power cost
Filamentous Bacteria Type Nocardia
2/5
Exam Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
Pump Eflciency Eflciency = (Output/Input) x 100
Lag Growth Phase Phase where cells grow in size
SO2 Hazard Acute toxicity on Global chemical data sheet
Extended Aeration Change Decrease in MLVSS when plant changes to extended air
Unseeded BOD Depletion Caused by contaminated glassware
Struvite Removal Addition of iron salt to precipitate phosphate
Wet Scrubber Chemical Sodium Hydroxide for H2S odor control
Mud Balls Removal Increase backwash or hydrogen peroxide rinse
Viable BOD Test Fourth BOD test with depletion of at least 2 and holding 1
Ceriodaphnia Dubia Test LC 50>100 Effluent indicates survival rate less than 50%
Calculate BOD removed from influent BOD and % loss in
BOD Removal Calculation
each stage
Pump Flow Rate Calculation Calculate pump flow rate based on water level rise
Filamentous Bacteria Observation View through a microscope using phase contrast
Receiving Water Pollution Duration Less than 2 days with organic and ammonia nitrogen
Minimum Secondary Clarifier Depth 12 Feet
ORP Sensor Storage Store in a neutral solution to prevent damage
Predominate Organism in Pin Floc Rotifers
Explosive Gas in Confined Space Methane (CH4) with explosive limits of 5%-19%
Cavitation Causes Clogged inlet, small suction pipe, or closed valve
Ferric Chloride Excess Lowers PH and increases sludge production
Mesophilic Digester Temperature Operates at 85-100 Degrees Fahrenheit
Thermophilic Digester Temperature Operates at 122-140 Degrees Fahrenheit
Iron Salts Advantage over Alum More ettective over a broader PH range and cheaper
1/5
, ABC Wastewater Verified Multiple Choice and Conceptual Actual Frequently Tested
Exam Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
Cryophilic Digester Temperature Operates at less than 68 Degrees Fahrenheit
Calculate horsepower using voltage, current, and eflcien-
Pump Horsepower Calculation
cy
Calculate pump flow rate based on water level rise and
Wet Well Pumping Rate
time
BOD: COD Ratio Ratio of 0.5-1
Skunk Odor Source Mercaptan at low concentrations
C:N:P Ratio 100:5:1
Hepatitis Form in Wastewater Form A
D.O. in Anoxic Tank 0.0-0.2
New Pump Higher Amps Cause Wrong impeller size or wrong size motor
UV Ground Fault Cause Broken quartz sleeve
Diaphragm Pump Elevation Elevation needed above water level for pump
Activated Sludge Adjustment Decrease MCRT from winter to summer
Grit Channel Odor Correction Remove 2 channels to increase velocity
Membrane Filtration Process Reverse Osmosis
Dewatering Centrifuge Process Sedimentation
High COD in Week 3 Caused by toxic spill
Activated Sludge Volatile Solids Should be 70%
Nitrosomonas and Nitrobacter Autotrophs
Metal Reaction with Water Forms hydroxides and hydrogen gas
COD:N:P Ratio 150:5:1
RAS and WAS Change Impact Increase and decrease in F/M and MLSS
Pump Running Cost Calculation Calculate annual cost using eflciency and power cost
Filamentous Bacteria Type Nocardia
2/5
