WASTE WATER GRADE 2 NEWEST 2025 EXAM COMPLETE 80 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
The filter media used at the Eau Claire treatment facility is _____
1. Cartridge
2. Reverse osmosis
3. Sand
4. Diatomaceous earth - ANSWER-sand
List the five chemicals added at the Eau Claire treatment facility and describe each chemical's purpose -
ANSWER-1. permanganate - is used to oxide the manganese particle to create a floc. The floc allows for
the manganese to become bigger and thus be removed from the water.
2. fluoride is added to water as it leaves the plant to improve dental health.
3. chlorine is used as a disinfectant.
4. ammonia is used after chlorine to form chloramine which is more stable and the disinfection reaches
further in the distribution system.
5. lime is added as the water comes into the plant to raise the pH of the water. Makes the less corrosive
and deposited materials on pipes to seal of lead or copper so it does not leach off into water.
What event prompted the Clean Water Act?
1. Hazardous waste exposure in Love Canal, NY
2. Cuyahoga River caught on fire
3. Times Beach, Missouri environmental contamination with dioxin
4. Enacting the Safe Drinking Water Act - ANSWER-Cuyahoga River caught on fire
Why does Cascades Tissue need to add nutrients in the wastewater treatment process? - ANSWER-
Cascade Tissue needs to add nutrients to their wastewater treatment process to help digestive microbes
grow during paper pulp treatment because paper does not contain nutrients as wastewater does.
What is the purpose of the filter press at Cascades Tissue? - ANSWER-The purpose of the filter press at
Cascades Tissue is to separate wastewaters and solids using pressure.
,Tertiary treatment at Cascades Tissue includes
1. Disinfection with chlorine
2. Disinfection with UV
3. Disinfection with ozone
4. Removal of phosphorus and nitrogen - ANSWER-Removal of phosphorus and nitrogen
Describe how NPDES technology-based effluent limitations work? - ANSWER-NPDES technology-based
effluent limitations work by establishing a minimum level for effluent quality. Effluent limits are based
on the toxicity of chemicals and heavy metals created. Technology-based looks at what equipment the
industry has available at the time.
Similar to treatment technologies at a drinking water treatment facility.
Review how much heavy metal remains after the treatment process. The combination treatment may
remove 90% of heavy metal. Consistent concentration of material in effluent.
Describe how NPDES water quality-based effluent limitations work? - ANSWER-NPDES water quality-
based effluent limitations work by assessing the quality of the receiving water where the waste will be
discharged. Waste will be discharged either directly to surface water or to the municipal sewer systems.
Samples are taken to assess how much heavy metals exist in the receiving water already. The printing
discharge is then treated to where effluent wouldn't disturb the natural levels of heavy metals and other
substances.
What agencies enforce the CWA in Wisconsin and Minnesota? - ANSWER-Wisconsin: Department of
Natural Resources
Minnesota: Minnesota Pollution Control Agency
Why does Cascades Tissue wastewater need to be treated? - ANSWER-Cascades Tissues wastewater
needs to be treated because when they separate material they need, like fiber, they produce
contaminants at levels that are too high to be discharged into water systems. It also needs to be treated
because their waste is nutrient deficient so they need to add nutrients before discharge.
, How is the wastewater treated? - ANSWER-Wastewater is treated like municipal wastewater. Paper
wastewater is put through a primary and secondary treatment process. During primary treatment, large
solids are removed through a clarifier. During secondary treatment, aeration is used to allow for
biodegradation of organic matter.
The oversized primary clarifier at Cascades Tissue causes problems with ______ generation
1. Ammonia
2. Nitrogen
3. Chlorine gas
4. Hydrogen sulfide - ANSWER-Hydrogen sulfide
What happens with the solids produced in wastewater treatment at Cascades Tissue? - ANSWER-Solids
produced in wastewater at Cascades Tissue is conveyed across onto a pad where a semi-truck picks
them up. Solids are then driven to farmer fields in the area and they land spread those solides.
Can not be used in fields for human consumption.
After the Clean Water Act, Cascades Tissue had to put in a biological process called _______ to reduce
BOD, which is used often in municipal wastewater treatment
1. Activated Sludge
2. Solids removal
3. Filter press
4. Effluent - ANSWER-Activated Sludge
Aeration in the activated sludge process is applied at Cascades Tissue to increase oxygen in the basin,
which helps _________
1. Break-up filamentous bacteria
2. Bacteria and other microbes breakdown organic matter in the wastewater
3. Increase nutrients
4. Reduce hydrogen sulfide - ANSWER-Bacteria and other microbes breakdown organic matter in the
wastewater
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
The filter media used at the Eau Claire treatment facility is _____
1. Cartridge
2. Reverse osmosis
3. Sand
4. Diatomaceous earth - ANSWER-sand
List the five chemicals added at the Eau Claire treatment facility and describe each chemical's purpose -
ANSWER-1. permanganate - is used to oxide the manganese particle to create a floc. The floc allows for
the manganese to become bigger and thus be removed from the water.
2. fluoride is added to water as it leaves the plant to improve dental health.
3. chlorine is used as a disinfectant.
4. ammonia is used after chlorine to form chloramine which is more stable and the disinfection reaches
further in the distribution system.
5. lime is added as the water comes into the plant to raise the pH of the water. Makes the less corrosive
and deposited materials on pipes to seal of lead or copper so it does not leach off into water.
What event prompted the Clean Water Act?
1. Hazardous waste exposure in Love Canal, NY
2. Cuyahoga River caught on fire
3. Times Beach, Missouri environmental contamination with dioxin
4. Enacting the Safe Drinking Water Act - ANSWER-Cuyahoga River caught on fire
Why does Cascades Tissue need to add nutrients in the wastewater treatment process? - ANSWER-
Cascade Tissue needs to add nutrients to their wastewater treatment process to help digestive microbes
grow during paper pulp treatment because paper does not contain nutrients as wastewater does.
What is the purpose of the filter press at Cascades Tissue? - ANSWER-The purpose of the filter press at
Cascades Tissue is to separate wastewaters and solids using pressure.
,Tertiary treatment at Cascades Tissue includes
1. Disinfection with chlorine
2. Disinfection with UV
3. Disinfection with ozone
4. Removal of phosphorus and nitrogen - ANSWER-Removal of phosphorus and nitrogen
Describe how NPDES technology-based effluent limitations work? - ANSWER-NPDES technology-based
effluent limitations work by establishing a minimum level for effluent quality. Effluent limits are based
on the toxicity of chemicals and heavy metals created. Technology-based looks at what equipment the
industry has available at the time.
Similar to treatment technologies at a drinking water treatment facility.
Review how much heavy metal remains after the treatment process. The combination treatment may
remove 90% of heavy metal. Consistent concentration of material in effluent.
Describe how NPDES water quality-based effluent limitations work? - ANSWER-NPDES water quality-
based effluent limitations work by assessing the quality of the receiving water where the waste will be
discharged. Waste will be discharged either directly to surface water or to the municipal sewer systems.
Samples are taken to assess how much heavy metals exist in the receiving water already. The printing
discharge is then treated to where effluent wouldn't disturb the natural levels of heavy metals and other
substances.
What agencies enforce the CWA in Wisconsin and Minnesota? - ANSWER-Wisconsin: Department of
Natural Resources
Minnesota: Minnesota Pollution Control Agency
Why does Cascades Tissue wastewater need to be treated? - ANSWER-Cascades Tissues wastewater
needs to be treated because when they separate material they need, like fiber, they produce
contaminants at levels that are too high to be discharged into water systems. It also needs to be treated
because their waste is nutrient deficient so they need to add nutrients before discharge.
, How is the wastewater treated? - ANSWER-Wastewater is treated like municipal wastewater. Paper
wastewater is put through a primary and secondary treatment process. During primary treatment, large
solids are removed through a clarifier. During secondary treatment, aeration is used to allow for
biodegradation of organic matter.
The oversized primary clarifier at Cascades Tissue causes problems with ______ generation
1. Ammonia
2. Nitrogen
3. Chlorine gas
4. Hydrogen sulfide - ANSWER-Hydrogen sulfide
What happens with the solids produced in wastewater treatment at Cascades Tissue? - ANSWER-Solids
produced in wastewater at Cascades Tissue is conveyed across onto a pad where a semi-truck picks
them up. Solids are then driven to farmer fields in the area and they land spread those solides.
Can not be used in fields for human consumption.
After the Clean Water Act, Cascades Tissue had to put in a biological process called _______ to reduce
BOD, which is used often in municipal wastewater treatment
1. Activated Sludge
2. Solids removal
3. Filter press
4. Effluent - ANSWER-Activated Sludge
Aeration in the activated sludge process is applied at Cascades Tissue to increase oxygen in the basin,
which helps _________
1. Break-up filamentous bacteria
2. Bacteria and other microbes breakdown organic matter in the wastewater
3. Increase nutrients
4. Reduce hydrogen sulfide - ANSWER-Bacteria and other microbes breakdown organic matter in the
wastewater
