Cumulative Final Exam Review Jeopardy

Cumulative Final Exam Review Jeopardy

Cumulative Final Exam Review Jeopardy

Waterworks Operations IIIWQT 131

Waterworks Operations IIIWQT 131

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ChlorineDisinfection Corrosion Fluoride

FINAL JEOPARDY

Disinfection $200

Plant that contained UV for disinfection

Plant that contained UV for disinfection

Disinfection $400

Three disadvantages of UV

Three disadvantages of UV

Disinfection $600

The wave length range used to

destroy DNA via UV?

The wave length range used to

destroy DNA via UV?

Disinfection $800

Three advantages of ozone

Three advantages of ozone

Disinfection $1000

Three disadvantages of chlorine dioxide?

Three disadvantages of chlorine dioxide?

Disinfection $200-Answer

What is Canby WTP?

What is Canby WTP?

Disinfection $400-Answer

• Color less then 15 units • Turbidity must be less then 1.0 ntu• Hardness• Natural Organic Matter• Inorganics (Iron and Manganese=lamp stain)

• Mercury in Low pressure and Med lamps • Lamp longevity (8,000-10,000 hrs)• Shallow water depth • No residual• Can’t measure dosage• Does not kill viruses

• Color less then 15 units • Turbidity must be less then 1.0 ntu• Hardness• Natural Organic Matter• Inorganics (Iron and Manganese=lamp stain)

• Mercury in Low pressure and Med lamps • Lamp longevity (8,000-10,000 hrs)• Shallow water depth • No residual• Can’t measure dosage• Does not kill viruses

Disinfection $600-Answer

What is 250-270 nm?

What is 250-270 nm?

Disinfection $800-Answer

•No toxic residual!•Increases dissolved oxygen levels•No ammonia demand at pH > 9•Instantaneous disinfection= low contact time•No DBP or THM•Effective disinfection over wide range of pH and Temp

•No toxic residual!•Increases dissolved oxygen levels•No ammonia demand at pH > 9•Instantaneous disinfection= low contact time•No DBP or THM•Effective disinfection over wide range of pH and Temp

Disinfection $1000-Answer

• High cost of sodium chlorite (NaClO2)

• Chlorine (Cl2) gas safety and handling issues

• Can still form chlorates (CLO3) and chlorite (ClO2)= DPBs

• Can react with bromide

• High cost of sodium chlorite (NaClO2)

• Chlorine (Cl2) gas safety and handling issues

• Can still form chlorates (CLO3) and chlorite (ClO2)= DPBs

• Can react with bromide

Chlorine $200

Adjusting chlorine residual after treatment

Adjusting chlorine residual after treatment

Chlorine $400

Control taste, odor, and aid before coagulation/filtration Control taste, odor, and aid before coagulation/filtration

Chlorine $600

Chlorine in contact with organics and

ammonia form what two compounds?

Chlorine in contact with organics and

ammonia form what two compounds?

Chlorine $800

Chlorine destroyed by reducing agents, clay,

and silt?

Chlorine destroyed by reducing agents, clay,

and silt?

Chlorine $1000

• Beyond breakpoint these two types of chlorine compounds dominates

• Beyond breakpoint these two types of chlorine compounds dominates

Chlorine $200-Answer

What is post chlorination?What is post chlorination?

Chlorine $400-Answer

What is pre-chlorination?

What is pre-chlorination?

Chlorine $600-Answer

What is chloroorganics and

chloramines?

What is chloroorganics and

chloramines?

Chlorine $800-Answer

What is chlorine demand?

What is chlorine demand?

Chlorine $1000-Answer

Corrosion $200

Most common chemical used in the US for pH adjustment

Most common chemical used in the US for pH adjustment

Corrosion $400

The rule that requires pH to be raised after

treatment

The rule that requires pH to be raised after

treatment

Corrosion $600

Cation rich substance shown here

Cation rich substance shown here

Corrosion $800

Corrosion $1000

The process that uses limestone and salt to

make soda ash

The process that uses limestone and salt to

make soda ash

Corrosion $200-Answer

What is lime (CaO)?What is lime (CaO)?

Corrosion $400-Answer

What is Lead and Copper Rule?

What is Lead and Copper Rule?

Corrosion $600-Answer

What is scale?What is scale?

Corrosion $800-Answer

What is Langelier Saturation Index?What is Langelier Saturation Index?

Corrosion $1000-Answer

What is Solvay Process?

What is Solvay Process?

Fluoride $200

What percent of US citizens are on

public fluoridated water supplies

What percent of US citizens are on

public fluoridated water supplies

Fluoride $400

Another name for hydrofluorosilicic

acid

Another name for hydrofluorosilicic

acid

Fluoride $600

Two common types of solid fluoride

used in fluoridation

Two common types of solid fluoride

used in fluoridation

Fluoride $800

Disease shown here Disease shown here

Fluoride $1000

Instrument shown here

Instrument shown here

Fluoride $200-Answer

What is ~66%?What is ~66%?

Fluoride $400-Answer

What is silly acid?What is silly acid?

Fluoride $600-Answer

What is sodium flouride and sodium

fluorosilicate?

What is sodium flouride and sodium

fluorosilicate?

Fluoride $800-Answer

What is dental fluorosis?

What is dental fluorosis?

Fluoride $1000-Answer

What is a solution feeder?

What is a solution feeder?

Final Jeopardy

ChlorinatonChlorinaton

Final JeopardyLabel and describe what is happening in each zone (include X)Label and describe what is happening in each zone (include X)

X

Final JeopardyLabel and describe what is happening in each zone (include X)Label and describe what is happening in each zone (include X)

Breakpoint ChlorinationBreakpoint ChlorinationZone I: Chlorine is destroyed by reducing agents such as iron, manganese, clay and silt. Chlorine reduced to chloride

Zone II: Chlorine comes into contact with organics and ammonia. Chloroorganics and chloramines are formed.

Zone III: Chloroorganics and chloramines are partially destroyed. Chloramines are broken down and converted to nitrogen gas which leaves the system

Zone IV: Breakpoint. Beyond this point, free available residual is formed. Some chloroorganics still remain as combined residual.

Chlorine demand is difference between applied chlorine and the chlorine residual at any two points on the breakpoint curve.

Zone I: Chlorine is destroyed by reducing agents such as iron, manganese, clay and silt. Chlorine reduced to chloride

Zone II: Chlorine comes into contact with organics and ammonia. Chloroorganics and chloramines are formed.

Zone III: Chloroorganics and chloramines are partially destroyed. Chloramines are broken down and converted to nitrogen gas which leaves the system

Zone IV: Breakpoint. Beyond this point, free available residual is formed. Some chloroorganics still remain as combined residual.

Chlorine demand is difference between applied chlorine and the chlorine residual at any two points on the breakpoint curve.